function decodeMPEGaudioHeader($fd, $offset, &$ThisFileInfo, $recursivesearch = true, $ScanAsCBR = false, $FastMPEGheaderScan = false) { static $MPEGaudioVersionLookup; static $MPEGaudioLayerLookup; static $MPEGaudioBitrateLookup; static $MPEGaudioFrequencyLookup; static $MPEGaudioChannelModeLookup; static $MPEGaudioModeExtensionLookup; static $MPEGaudioEmphasisLookup; if (empty($MPEGaudioVersionLookup)) { $MPEGaudioVersionLookup = MPEGaudioVersionArray(); $MPEGaudioLayerLookup = MPEGaudioLayerArray(); $MPEGaudioBitrateLookup = MPEGaudioBitrateArray(); $MPEGaudioFrequencyLookup = MPEGaudioFrequencyArray(); $MPEGaudioChannelModeLookup = MPEGaudioChannelModeArray(); $MPEGaudioModeExtensionLookup = MPEGaudioModeExtensionArray(); $MPEGaudioEmphasisLookup = MPEGaudioEmphasisArray(); } if ($offset >= $ThisFileInfo['avdataend']) { $ThisFileInfo['error'] .= "\n" . 'end of file encounter looking for MPEG synch'; return false; } fseek($fd, $offset, SEEK_SET); $headerstring = fread($fd, 1441); // worse-case max length = 32kHz @ 320kbps layer 3 = 1441 bytes/frame // MP3 audio frame structure: // $aa $aa $aa $aa [$bb $bb] $cc... // where $aa..$aa is the four-byte mpeg-audio header (below) // $bb $bb is the optional 2-byte CRC // and $cc... is the audio data $head4 = substr($headerstring, 0, 4); static $MPEGaudioHeaderDecodeCache = array(); if (isset($MPEGaudioHeaderDecodeCache[$head4])) { $MPEGheaderRawArray = $MPEGaudioHeaderDecodeCache[$head4]; } else { $MPEGheaderRawArray = MPEGaudioHeaderDecode($head4); $MPEGaudioHeaderDecodeCache[$head4] = $MPEGheaderRawArray; } static $MPEGaudioHeaderValidCache = array(); // Not in cache if (!isset($MPEGaudioHeaderValidCache[$head4])) { $MPEGaudioHeaderValidCache[$head4] = MPEGaudioHeaderValid($MPEGheaderRawArray); } if ($MPEGaudioHeaderValidCache[$head4]) { $ThisFileInfo['mpeg']['audio']['raw'] = $MPEGheaderRawArray; } else { $ThisFileInfo['error'] .= "\n" . 'Invalid MPEG audio header at offset ' . $offset; return false; } if (!$FastMPEGheaderScan) { $ThisFileInfo['mpeg']['audio']['version'] = $MPEGaudioVersionLookup[$ThisFileInfo['mpeg']['audio']['raw']['version']]; $ThisFileInfo['mpeg']['audio']['layer'] = $MPEGaudioLayerLookup[$ThisFileInfo['mpeg']['audio']['raw']['layer']]; $ThisFileInfo['mpeg']['audio']['channelmode'] = $MPEGaudioChannelModeLookup[$ThisFileInfo['mpeg']['audio']['raw']['channelmode']]; $ThisFileInfo['mpeg']['audio']['channels'] = $ThisFileInfo['mpeg']['audio']['channelmode'] == 'mono' ? 1 : 2; $ThisFileInfo['mpeg']['audio']['sample_rate'] = $MPEGaudioFrequencyLookup[$ThisFileInfo['mpeg']['audio']['version']][$ThisFileInfo['mpeg']['audio']['raw']['sample_rate']]; $ThisFileInfo['mpeg']['audio']['protection'] = !$ThisFileInfo['mpeg']['audio']['raw']['protection']; $ThisFileInfo['mpeg']['audio']['private'] = (bool) $ThisFileInfo['mpeg']['audio']['raw']['private']; $ThisFileInfo['mpeg']['audio']['modeextension'] = $MPEGaudioModeExtensionLookup[$ThisFileInfo['mpeg']['audio']['layer']][$ThisFileInfo['mpeg']['audio']['raw']['modeextension']]; $ThisFileInfo['mpeg']['audio']['copyright'] = (bool) $ThisFileInfo['mpeg']['audio']['raw']['copyright']; $ThisFileInfo['mpeg']['audio']['original'] = (bool) $ThisFileInfo['mpeg']['audio']['raw']['original']; $ThisFileInfo['mpeg']['audio']['emphasis'] = $MPEGaudioEmphasisLookup[$ThisFileInfo['mpeg']['audio']['raw']['emphasis']]; $ThisFileInfo['audio']['channels'] = $ThisFileInfo['mpeg']['audio']['channels']; $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['mpeg']['audio']['sample_rate']; if ($ThisFileInfo['mpeg']['audio']['protection']) { $ThisFileInfo['mpeg']['audio']['crc'] = BigEndian2Int(substr($headerstring, 4, 2)); } } if ($ThisFileInfo['mpeg']['audio']['raw']['bitrate'] == 15) { // http://www.hydrogenaudio.org/?act=ST&f=16&t=9682&st=0 $ThisFileInfo['warning'] .= "\n" . 'Invalid bitrate index (15), this is a known bug in free-format MP3s encoded by LAME v3.90 - 3.93.1'; $ThisFileInfo['mpeg']['audio']['raw']['bitrate'] = 0; } $ThisFileInfo['mpeg']['audio']['padding'] = (bool) $ThisFileInfo['mpeg']['audio']['raw']['padding']; $ThisFileInfo['mpeg']['audio']['bitrate'] = $MPEGaudioBitrateLookup[$ThisFileInfo['mpeg']['audio']['version']][$ThisFileInfo['mpeg']['audio']['layer']][$ThisFileInfo['mpeg']['audio']['raw']['bitrate']]; if ($ThisFileInfo['mpeg']['audio']['bitrate'] == 'free' && $offset == $ThisFileInfo['avdataoffset']) { // only skip multiple frame check if free-format bitstream found at beginning of file // otherwise is quite possibly simply corrupted data $recursivesearch = false; } // For Layer II there are some combinations of bitrate and mode which are not allowed. if (!$FastMPEGheaderScan && $ThisFileInfo['mpeg']['audio']['layer'] == 'II') { $ThisFileInfo['audio']['dataformat'] = 'mp2'; switch ($ThisFileInfo['mpeg']['audio']['channelmode']) { case 'mono': if ($ThisFileInfo['mpeg']['audio']['bitrate'] == 'free' || $ThisFileInfo['mpeg']['audio']['bitrate'] <= 192) { // these are ok } else { $ThisFileInfo['error'] .= "\n" . $ThisFileInfo['mpeg']['audio']['bitrate'] . 'kbps not allowed in Layer II, ' . $ThisFileInfo['mpeg']['audio']['channelmode'] . '.'; return false; } break; case 'stereo': case 'joint stereo': case 'dual channel': if ($ThisFileInfo['mpeg']['audio']['bitrate'] == 'free' || $ThisFileInfo['mpeg']['audio']['bitrate'] == 64 || $ThisFileInfo['mpeg']['audio']['bitrate'] >= 96) { // these are ok } else { $ThisFileInfo['error'] .= "\n" . $ThisFileInfo['mpeg']['audio']['bitrate'] . 'kbps not allowed in Layer II, ' . $ThisFileInfo['mpeg']['audio']['channelmode'] . '.'; return false; } break; } } if ($ThisFileInfo['audio']['sample_rate'] > 0) { $ThisFileInfo['mpeg']['audio']['framelength'] = MPEGaudioFrameLength($ThisFileInfo['mpeg']['audio']['bitrate'], $ThisFileInfo['mpeg']['audio']['version'], $ThisFileInfo['mpeg']['audio']['layer'], (int) $ThisFileInfo['mpeg']['audio']['padding'], $ThisFileInfo['audio']['sample_rate']); } if ($ThisFileInfo['mpeg']['audio']['bitrate'] != 'free') { $ThisFileInfo['audio']['bitrate'] = 1000 * $ThisFileInfo['mpeg']['audio']['bitrate']; if (isset($ThisFileInfo['mpeg']['audio']['framelength'])) { $nextframetestoffset = $offset + $ThisFileInfo['mpeg']['audio']['framelength']; } else { $ThisFileInfo['error'] .= "\n" . 'Frame at offset(' . $offset . ') is has an invalid frame length.'; return false; } } $ExpectedNumberOfAudioBytes = 0; //////////////////////////////////////////////////////////////////////////////////// // Variable-bitrate headers if (substr($headerstring, 4 + 32, 4) == 'VBRI') { // Fraunhofer VBR header is hardcoded 'VBRI' at offset 0x24 (36) // specs taken from http://minnie.tuhs.org/pipermail/mp3encoder/2001-January/001800.html $ThisFileInfo['mpeg']['audio']['bitrate_mode'] = 'vbr'; $ThisFileInfo['mpeg']['audio']['VBR_method'] = 'Fraunhofer'; $ThisFileInfo['audio']['codec'] = 'Fraunhofer'; $SideInfoData = substr($headerstring, 4 + 2, 32); $FraunhoferVBROffset = 36; $ThisFileInfo['mpeg']['audio']['VBR_encoder_version'] = BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 4, 2)); $ThisFileInfo['mpeg']['audio']['VBR_encoder_delay'] = BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 6, 2)); $ThisFileInfo['mpeg']['audio']['VBR_quality'] = BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 8, 2)); $ThisFileInfo['mpeg']['audio']['VBR_bytes'] = BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 10, 4)); $ThisFileInfo['mpeg']['audio']['VBR_frames'] = BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 14, 4)); $ThisFileInfo['mpeg']['audio']['VBR_seek_offsets'] = BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 18, 2)); //$ThisFileInfo['mpeg']['audio']['reserved'] = BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 20, 4)); // hardcoded $00 $01 $00 $02 - purpose unknown $ThisFileInfo['mpeg']['audio']['VBR_seek_offsets_stride'] = BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 24, 2)); $ExpectedNumberOfAudioBytes = $ThisFileInfo['mpeg']['audio']['VBR_bytes']; $previousbyteoffset = $offset; for ($i = 0; $i < $ThisFileInfo['mpeg']['audio']['VBR_seek_offsets']; $i++) { $Fraunhofer_OffsetN = BigEndian2Int(substr($headerstring, $FraunhoferVBROffset, 2)); $FraunhoferVBROffset += 2; $ThisFileInfo['mpeg']['audio']['VBR_offsets_relative'][$i] = $Fraunhofer_OffsetN; $ThisFileInfo['mpeg']['audio']['VBR_offsets_absolute'][$i] = $Fraunhofer_OffsetN + $previousbyteoffset; $previousbyteoffset += $Fraunhofer_OffsetN; } } else { // Xing VBR header is hardcoded 'Xing' at a offset 0x0D (13), 0x15 (21) or 0x24 (36) // depending on MPEG layer and number of channels if ($ThisFileInfo['mpeg']['audio']['version'] == '1') { if ($ThisFileInfo['mpeg']['audio']['channelmode'] == 'mono') { // MPEG-1 (mono) $VBRidOffset = 4 + 17; // 0x15 $SideInfoData = substr($headerstring, 4 + 2, 17); } else { // MPEG-1 (stereo, joint-stereo, dual-channel) $VBRidOffset = 4 + 32; // 0x24 $SideInfoData = substr($headerstring, 4 + 2, 32); } } else { // 2 or 2.5 if ($ThisFileInfo['mpeg']['audio']['channelmode'] == 'mono') { // MPEG-2, MPEG-2.5 (mono) $VBRidOffset = 4 + 9; // 0x0D $SideInfoData = substr($headerstring, 4 + 2, 9); } else { // MPEG-2, MPEG-2.5 (stereo, joint-stereo, dual-channel) $VBRidOffset = 4 + 17; // 0x15 $SideInfoData = substr($headerstring, 4 + 2, 17); } } if (substr($headerstring, $VBRidOffset, strlen('Xing')) == 'Xing' || substr($headerstring, $VBRidOffset, strlen('Info')) == 'Info') { // 'Xing' is traditional Xing VBR frame // 'Info' is LAME-encoded CBR (This was done to avoid CBR files to be recognized as traditional Xing VBR files by some decoders.) $ThisFileInfo['mpeg']['audio']['bitrate_mode'] = 'vbr'; $ThisFileInfo['mpeg']['audio']['VBR_method'] = 'Xing'; $ThisFileInfo['mpeg']['audio']['xing_flags_raw'] = BigEndian2Int(substr($headerstring, $VBRidOffset + 4, 4)); $ThisFileInfo['mpeg']['audio']['xing_flags']['frames'] = (bool) ($ThisFileInfo['mpeg']['audio']['xing_flags_raw'] & 0x1); $ThisFileInfo['mpeg']['audio']['xing_flags']['bytes'] = (bool) ($ThisFileInfo['mpeg']['audio']['xing_flags_raw'] & 0x2); $ThisFileInfo['mpeg']['audio']['xing_flags']['toc'] = (bool) ($ThisFileInfo['mpeg']['audio']['xing_flags_raw'] & 0x4); $ThisFileInfo['mpeg']['audio']['xing_flags']['vbr_scale'] = (bool) ($ThisFileInfo['mpeg']['audio']['xing_flags_raw'] & 0x8); if ($ThisFileInfo['mpeg']['audio']['xing_flags']['frames']) { $ThisFileInfo['mpeg']['audio']['VBR_frames'] = BigEndian2Int(substr($headerstring, $VBRidOffset + 8, 4)); } if ($ThisFileInfo['mpeg']['audio']['xing_flags']['bytes']) { $ThisFileInfo['mpeg']['audio']['VBR_bytes'] = BigEndian2Int(substr($headerstring, $VBRidOffset + 12, 4)); } if ($ThisFileInfo['mpeg']['audio']['bitrate'] == 'free' && !empty($ThisFileInfo['mpeg']['audio']['VBR_frames']) && !empty($ThisFileInfo['mpeg']['audio']['VBR_bytes'])) { $framelengthfloat = $ThisFileInfo['mpeg']['audio']['VBR_bytes'] / $ThisFileInfo['mpeg']['audio']['VBR_frames']; if ($ThisFileInfo['mpeg']['audio']['layer'] == 'I') { // BitRate = (((FrameLengthInBytes / 4) - Padding) * SampleRate) / 12 $ThisFileInfo['audio']['bitrate'] = ($framelengthfloat / 4 - intval($ThisFileInfo['mpeg']['audio']['padding'])) * $ThisFileInfo['mpeg']['audio']['sample_rate'] / 12; } else { // Bitrate = ((FrameLengthInBytes - Padding) * SampleRate) / 144 $ThisFileInfo['audio']['bitrate'] = ($framelengthfloat - intval($ThisFileInfo['mpeg']['audio']['padding'])) * $ThisFileInfo['mpeg']['audio']['sample_rate'] / 144; } $ThisFileInfo['mpeg']['audio']['framelength'] = floor($framelengthfloat); } if ($ThisFileInfo['mpeg']['audio']['xing_flags']['toc']) { $LAMEtocData = substr($headerstring, $VBRidOffset + 16, 100); for ($i = 0; $i < 100; $i++) { $ThisFileInfo['mpeg']['audio']['toc'][$i] = ord($LAMEtocData[$i]); } } if ($ThisFileInfo['mpeg']['audio']['xing_flags']['vbr_scale']) { $ThisFileInfo['mpeg']['audio']['VBR_scale'] = BigEndian2Int(substr($headerstring, $VBRidOffset + 116, 4)); } // http://gabriel.mp3-tech.org/mp3infotag.html if (substr($headerstring, $VBRidOffset + 120, 4) == 'LAME') { $ThisFileInfo['mpeg']['audio']['LAME']['long_version'] = substr($headerstring, $VBRidOffset + 120, 20); $ThisFileInfo['mpeg']['audio']['LAME']['short_version'] = substr($ThisFileInfo['mpeg']['audio']['LAME']['long_version'], 0, 9); $ThisFileInfo['mpeg']['audio']['LAME']['long_version'] = rtrim($ThisFileInfo['mpeg']['audio']['LAME']['long_version'], "Uª"); if ($ThisFileInfo['mpeg']['audio']['LAME']['short_version'] >= 'LAME3.90.') { // It the LAME tag was only introduced in LAME v3.90 // http://www.hydrogenaudio.org/?act=ST&f=15&t=9933 // Offsets of various bytes in http://gabriel.mp3-tech.org/mp3infotag.html // are assuming a 'Xing' identifier offset of 0x24, which is the case for // MPEG-1 non-mono, but not for other combinations $LAMEtagOffsetContant = $VBRidOffset - 0x24; // byte $9B VBR Quality // This field is there to indicate a quality level, although the scale was not precised in the original Xing specifications. // Actually overwrites original Xing bytes unset($ThisFileInfo['mpeg']['audio']['VBR_scale']); $ThisFileInfo['mpeg']['audio']['LAME']['vbr_quality'] = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0x9b, 1)); // bytes $9C-$A4 Encoder short VersionString $ThisFileInfo['mpeg']['audio']['LAME']['short_version'] = substr($headerstring, $LAMEtagOffsetContant + 0x9c, 9); $ThisFileInfo['mpeg']['audio']['LAME']['long_version'] = $ThisFileInfo['mpeg']['audio']['LAME']['short_version']; // byte $A5 Info Tag revision + VBR method $LAMEtagRevisionVBRmethod = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xa5, 1)); $ThisFileInfo['mpeg']['audio']['LAME']['tag_revision'] = ($LAMEtagRevisionVBRmethod & 0xf0) >> 4; $ThisFileInfo['mpeg']['audio']['LAME']['raw']['vbr_method'] = $LAMEtagRevisionVBRmethod & 0xf; $ThisFileInfo['mpeg']['audio']['LAME']['vbr_method'] = LAMEvbrMethodLookup($ThisFileInfo['mpeg']['audio']['LAME']['raw']['vbr_method']); // byte $A6 Lowpass filter value $ThisFileInfo['mpeg']['audio']['LAME']['lowpass_frequency'] = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xa6, 1)) * 100; // bytes $A7-$AE Replay Gain // http://privatewww.essex.ac.uk/~djmrob/replaygain/rg_data_format.html // bytes $A7-$AA : 32 bit floating point "Peak signal amplitude" $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['peak_amplitude'] = BigEndian2Float(substr($headerstring, $LAMEtagOffsetContant + 0xa7, 4)); $ThisFileInfo['mpeg']['audio']['LAME']['raw']['RGAD_radio'] = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xab, 2)); $ThisFileInfo['mpeg']['audio']['LAME']['raw']['RGAD_audiophile'] = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xad, 2)); if ($ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['peak_amplitude'] == 0) { $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['peak_amplitude'] = false; } if ($ThisFileInfo['mpeg']['audio']['LAME']['raw']['RGAD_radio'] != 0) { require_once GETID3_INCLUDEPATH . 'getid3.rgad.php'; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['raw']['name'] = ($ThisFileInfo['mpeg']['audio']['LAME']['raw']['RGAD_radio'] & 0xe000) >> 13; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['raw']['originator'] = ($ThisFileInfo['mpeg']['audio']['LAME']['raw']['RGAD_radio'] & 0x1c00) >> 10; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['raw']['sign_bit'] = ($ThisFileInfo['mpeg']['audio']['LAME']['raw']['RGAD_radio'] & 0x200) >> 9; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['raw']['gain_adjust'] = $ThisFileInfo['mpeg']['audio']['LAME']['raw']['RGAD_radio'] & 0x1ff; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['name'] = RGADnameLookup($ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['raw']['name']); $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['originator'] = RGADoriginatorLookup($ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['raw']['originator']); $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['gain_db'] = RGADadjustmentLookup($ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['raw']['gain_adjust'], $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['raw']['sign_bit']); if ($ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['peak_amplitude'] !== false) { $ThisFileInfo['replay_gain']['radio']['peak'] = $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['peak_amplitude']; } $ThisFileInfo['replay_gain']['radio']['originator'] = $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['originator']; $ThisFileInfo['replay_gain']['radio']['adjustment'] = $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['radio']['gain_db']; } if ($ThisFileInfo['mpeg']['audio']['LAME']['raw']['RGAD_audiophile'] != 0) { require_once GETID3_INCLUDEPATH . 'getid3.rgad.php'; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['raw']['name'] = ($ThisFileInfo['mpeg']['audio']['LAME']['raw']['RGAD_audiophile'] & 0xe000) >> 13; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['raw']['originator'] = ($ThisFileInfo['mpeg']['audio']['LAME']['raw']['RGAD_audiophile'] & 0x1c00) >> 10; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['raw']['sign_bit'] = ($ThisFileInfo['mpeg']['audio']['LAME']['raw']['RGAD_audiophile'] & 0x200) >> 9; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['raw']['gain_adjust'] = $ThisFileInfo['mpeg']['audio']['LAME']['raw']['RGAD_audiophile'] & 0x1ff; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['name'] = RGADnameLookup($ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['raw']['name']); $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['originator'] = RGADoriginatorLookup($ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['raw']['originator']); $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['gain_db'] = RGADadjustmentLookup($ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['raw']['gain_adjust'], $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['raw']['sign_bit']); if ($ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['peak_amplitude'] !== false) { $ThisFileInfo['replay_gain']['audiophile']['peak'] = $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['peak_amplitude']; } $ThisFileInfo['replay_gain']['audiophile']['originator'] = $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['originator']; $ThisFileInfo['replay_gain']['audiophile']['adjustment'] = $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['audiophile']['gain_db']; } // byte $AF Encoding flags + ATH Type $EncodingFlagsATHtype = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xaf, 1)); $ThisFileInfo['mpeg']['audio']['LAME']['encoding_flags']['nspsytune'] = (bool) ($EncodingFlagsATHtype & 0x10); $ThisFileInfo['mpeg']['audio']['LAME']['encoding_flags']['nssafejoint'] = (bool) ($EncodingFlagsATHtype & 0x20); $ThisFileInfo['mpeg']['audio']['LAME']['encoding_flags']['nogap_next'] = (bool) ($EncodingFlagsATHtype & 0x40); $ThisFileInfo['mpeg']['audio']['LAME']['encoding_flags']['nogap_prev'] = (bool) ($EncodingFlagsATHtype & 0x80); $ThisFileInfo['mpeg']['audio']['LAME']['ath_type'] = $EncodingFlagsATHtype & 0xf; // byte $B0 if ABR {specified bitrate} else {minimal bitrate} $ABRbitrateMinBitrate = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xb0, 1)); if ($ThisFileInfo['mpeg']['audio']['LAME']['raw']['vbr_method'] == 2) { // Average BitRate (ABR) $ThisFileInfo['mpeg']['audio']['LAME']['bitrate_abr'] = $ABRbitrateMinBitrate; } elseif ($ABRbitrateMinBitrate > 0) { // Variable BitRate (VBR) - minimum bitrate $ThisFileInfo['mpeg']['audio']['LAME']['bitrate_min'] = $ABRbitrateMinBitrate; } // bytes $B1-$B3 Encoder delays $EncoderDelays = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xb1, 3)); $ThisFileInfo['mpeg']['audio']['LAME']['encoder_delay'] = ($EncoderDelays & 0xfff000) >> 12; $ThisFileInfo['mpeg']['audio']['LAME']['end_padding'] = $EncoderDelays & 0xfff; // byte $B4 Misc $MiscByte = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xb4, 1)); $ThisFileInfo['mpeg']['audio']['LAME']['raw']['noise_shaping'] = $MiscByte & 0x3; $ThisFileInfo['mpeg']['audio']['LAME']['raw']['stereo_mode'] = ($MiscByte & 0x1c) >> 2; $ThisFileInfo['mpeg']['audio']['LAME']['raw']['not_optimal_quality'] = ($MiscByte & 0x20) >> 5; $ThisFileInfo['mpeg']['audio']['LAME']['raw']['source_sample_freq'] = ($MiscByte & 0xc0) >> 6; $ThisFileInfo['mpeg']['audio']['LAME']['noise_shaping'] = $ThisFileInfo['mpeg']['audio']['LAME']['raw']['noise_shaping']; $ThisFileInfo['mpeg']['audio']['LAME']['stereo_mode'] = LAMEmiscStereoModeLookup($ThisFileInfo['mpeg']['audio']['LAME']['raw']['stereo_mode']); $ThisFileInfo['mpeg']['audio']['LAME']['not_optimal_quality'] = (bool) $ThisFileInfo['mpeg']['audio']['LAME']['raw']['not_optimal_quality']; $ThisFileInfo['mpeg']['audio']['LAME']['source_sample_freq'] = LAMEmiscSourceSampleFrequencyLookup($ThisFileInfo['mpeg']['audio']['LAME']['raw']['source_sample_freq']); // byte $B5 MP3 Gain $ThisFileInfo['mpeg']['audio']['LAME']['raw']['mp3_gain'] = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xb5, 1), false, true); $ThisFileInfo['mpeg']['audio']['LAME']['mp3_gain_db'] = 1.5 * $ThisFileInfo['mpeg']['audio']['LAME']['raw']['mp3_gain']; $ThisFileInfo['mpeg']['audio']['LAME']['mp3_gain_factor'] = pow(2, $ThisFileInfo['mpeg']['audio']['LAME']['mp3_gain_db'] / 6); // bytes $B6-$B7 Preset and surround info $PresetSurroundBytes = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xb6, 2)); // Reserved = ($PresetSurroundBytes & 0xC000); $ThisFileInfo['mpeg']['audio']['LAME']['raw']['surround_info'] = $PresetSurroundBytes & 0x3800; $ThisFileInfo['mpeg']['audio']['LAME']['surround_info'] = LAMEsurroundInfoLookup($ThisFileInfo['mpeg']['audio']['LAME']['raw']['surround_info']); $ThisFileInfo['mpeg']['audio']['LAME']['preset_used_id'] = $PresetSurroundBytes & 0x7ff; // bytes $B8-$BB MusicLength $ThisFileInfo['mpeg']['audio']['LAME']['audio_bytes'] = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xb8, 4)); $ExpectedNumberOfAudioBytes = $ThisFileInfo['mpeg']['audio']['LAME']['audio_bytes'] > 0 ? $ThisFileInfo['mpeg']['audio']['LAME']['audio_bytes'] : $ThisFileInfo['mpeg']['audio']['VBR_bytes']; // bytes $BC-$BD MusicCRC $ThisFileInfo['mpeg']['audio']['LAME']['music_crc'] = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xbc, 2)); // bytes $BE-$BF CRC-16 of Info Tag $ThisFileInfo['mpeg']['audio']['LAME']['lame_tag_crc'] = BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xbe, 2)); // LAME CBR if ($ThisFileInfo['mpeg']['audio']['LAME']['raw']['vbr_method'] == 1) { $ThisFileInfo['mpeg']['audio']['bitrate_mode'] = 'cbr'; if (empty($ThisFileInfo['mpeg']['audio']['bitrate']) || $ThisFileInfo['mpeg']['audio']['LAME']['bitrate_min'] != 255) { $ThisFileInfo['mpeg']['audio']['bitrate'] = $ThisFileInfo['mpeg']['audio']['LAME']['bitrate_min']; } } } } } else { // not Fraunhofer or Xing VBR methods, most likely CBR (but could be VBR with no header) $ThisFileInfo['mpeg']['audio']['bitrate_mode'] = 'cbr'; if ($recursivesearch) { $ThisFileInfo['mpeg']['audio']['bitrate_mode'] = 'vbr'; if (RecursiveFrameScanning($fd, $ThisFileInfo, $offset, $nextframetestoffset, true)) { $recursivesearch = false; $ThisFileInfo['mpeg']['audio']['bitrate_mode'] = 'cbr'; } if ($ThisFileInfo['mpeg']['audio']['bitrate_mode'] == 'vbr') { $ThisFileInfo['warning'] .= "\n" . 'VBR file with no VBR header. Bitrate values calculated from actual frame bitrates.'; } } } } if ($ExpectedNumberOfAudioBytes > 0 && $ExpectedNumberOfAudioBytes != $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) { if ($ExpectedNumberOfAudioBytes - ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) == 1) { $ThisFileInfo['warning'] .= "\n" . 'Last byte of data truncated (this is a known bug in Meracl ID3 Tag Writer before v1.3.5)'; } elseif ($ExpectedNumberOfAudioBytes > $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) { $ThisFileInfo['warning'] .= "\n" . 'Probable truncated file: expecting ' . $ExpectedNumberOfAudioBytes . ' bytes of audio data, only found ' . ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) . ' (short by ' . ($ExpectedNumberOfAudioBytes - ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset'])) . ' bytes)'; } else { $ThisFileInfo['warning'] .= "\n" . 'Too much data in file: expecting ' . $ExpectedNumberOfAudioBytes . ' bytes of audio data, found ' . ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) . ' (' . ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset'] - $ExpectedNumberOfAudioBytes) . ' bytes too many)'; } } if ($ThisFileInfo['mpeg']['audio']['bitrate'] == 'free' && empty($ThisFileInfo['audio']['bitrate'])) { if ($offset == $ThisFileInfo['avdataoffset'] && empty($ThisFileInfo['mpeg']['audio']['VBR_frames'])) { $framebytelength = FreeFormatFrameLength($fd, $offset, $ThisFileInfo, true); if ($framebytelength > 0) { $ThisFileInfo['mpeg']['audio']['framelength'] = $framebytelength; if ($ThisFileInfo['mpeg']['audio']['layer'] == 'I') { // BitRate = (((FrameLengthInBytes / 4) - Padding) * SampleRate) / 12 $ThisFileInfo['audio']['bitrate'] = ($framebytelength / 4 - intval($ThisFileInfo['mpeg']['audio']['padding'])) * $ThisFileInfo['mpeg']['audio']['sample_rate'] / 12; } else { // Bitrate = ((FrameLengthInBytes - Padding) * SampleRate) / 144 $ThisFileInfo['audio']['bitrate'] = ($framebytelength - intval($ThisFileInfo['mpeg']['audio']['padding'])) * $ThisFileInfo['mpeg']['audio']['sample_rate'] / 144; } } else { $ThisFileInfo['error'] .= "\n" . 'Error calculating frame length of free-format MP3 without Xing/LAME header'; } } } if ($ThisFileInfo['mpeg']['audio']['bitrate_mode'] == 'vbr' && isset($ThisFileInfo['mpeg']['audio']['VBR_frames']) && $ThisFileInfo['mpeg']['audio']['VBR_frames'] > 1) { $ThisFileInfo['mpeg']['audio']['VBR_frames']--; // don't count the Xing / VBRI frame if ($ThisFileInfo['mpeg']['audio']['version'] == '1' && $ThisFileInfo['mpeg']['audio']['layer'] == 'I') { $ThisFileInfo['mpeg']['audio']['VBR_bitrate'] = $ThisFileInfo['mpeg']['audio']['VBR_bytes'] / $ThisFileInfo['mpeg']['audio']['VBR_frames'] * 8 * ($ThisFileInfo['audio']['sample_rate'] / 384) / 1000; } elseif (($ThisFileInfo['mpeg']['audio']['version'] == '2' || $ThisFileInfo['mpeg']['audio']['version'] == '2.5') && $ThisFileInfo['mpeg']['audio']['layer'] == 'III') { $ThisFileInfo['mpeg']['audio']['VBR_bitrate'] = $ThisFileInfo['mpeg']['audio']['VBR_bytes'] / $ThisFileInfo['mpeg']['audio']['VBR_frames'] * 8 * ($ThisFileInfo['audio']['sample_rate'] / 576) / 1000; } else { $ThisFileInfo['mpeg']['audio']['VBR_bitrate'] = $ThisFileInfo['mpeg']['audio']['VBR_bytes'] / $ThisFileInfo['mpeg']['audio']['VBR_frames'] * 8 * ($ThisFileInfo['audio']['sample_rate'] / 1152) / 1000; } if ($ThisFileInfo['mpeg']['audio']['VBR_bitrate'] > 0) { $ThisFileInfo['audio']['bitrate'] = 1000 * $ThisFileInfo['mpeg']['audio']['VBR_bitrate']; $ThisFileInfo['mpeg']['audio']['bitrate'] = $ThisFileInfo['mpeg']['audio']['VBR_bitrate']; // to avoid confusion } } // End variable-bitrate headers //////////////////////////////////////////////////////////////////////////////////// if ($recursivesearch) { if (!RecursiveFrameScanning($fd, $ThisFileInfo, $offset, $nextframetestoffset, $ScanAsCBR)) { return false; } } //if (false) { // // experimental side info parsing section - not returning anything useful yet // // $SideInfoBitstream = BigEndian2Bin($SideInfoData); // $SideInfoOffset = 0; // // if ($ThisFileInfo['mpeg']['audio']['version'] == '1') { // if ($ThisFileInfo['mpeg']['audio']['channelmode'] == 'mono') { // // MPEG-1 (mono) // $ThisFileInfo['mpeg']['audio']['side_info']['main_data_begin'] = substr($SideInfoBitstream, $SideInfoOffset, 9); // $SideInfoOffset += 9; // $SideInfoOffset += 5; // } else { // // MPEG-1 (stereo, joint-stereo, dual-channel) // $ThisFileInfo['mpeg']['audio']['side_info']['main_data_begin'] = substr($SideInfoBitstream, $SideInfoOffset, 9); // $SideInfoOffset += 9; // $SideInfoOffset += 3; // } // } else { // 2 or 2.5 // if ($ThisFileInfo['mpeg']['audio']['channelmode'] == 'mono') { // // MPEG-2, MPEG-2.5 (mono) // $ThisFileInfo['mpeg']['audio']['side_info']['main_data_begin'] = substr($SideInfoBitstream, $SideInfoOffset, 8); // $SideInfoOffset += 8; // $SideInfoOffset += 1; // } else { // // MPEG-2, MPEG-2.5 (stereo, joint-stereo, dual-channel) // $ThisFileInfo['mpeg']['audio']['side_info']['main_data_begin'] = substr($SideInfoBitstream, $SideInfoOffset, 8); // $SideInfoOffset += 8; // $SideInfoOffset += 2; // } // } // // if ($ThisFileInfo['mpeg']['audio']['version'] == '1') { // for ($channel = 0; $channel < $ThisFileInfo['audio']['channels']; $channel++) { // for ($scfsi_band = 0; $scfsi_band < 4; $scfsi_band++) { // $ThisFileInfo['mpeg']['audio']['scfsi'][$channel][$scfsi_band] = substr($SideInfoBitstream, $SideInfoOffset, 1); // $SideInfoOffset += 2; // } // } // } // for ($granule = 0; $granule < (($ThisFileInfo['mpeg']['audio']['version'] == '1') ? 2 : 1); $granule++) { // for ($channel = 0; $channel < $ThisFileInfo['audio']['channels']; $channel++) { // $ThisFileInfo['mpeg']['audio']['part2_3_length'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 12); // $SideInfoOffset += 12; // $ThisFileInfo['mpeg']['audio']['big_values'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 9); // $SideInfoOffset += 9; // $ThisFileInfo['mpeg']['audio']['global_gain'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 8); // $SideInfoOffset += 8; // if ($ThisFileInfo['mpeg']['audio']['version'] == '1') { // $ThisFileInfo['mpeg']['audio']['scalefac_compress'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 4); // $SideInfoOffset += 4; // } else { // $ThisFileInfo['mpeg']['audio']['scalefac_compress'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 9); // $SideInfoOffset += 9; // } // $ThisFileInfo['mpeg']['audio']['window_switching_flag'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1); // $SideInfoOffset += 1; // // if ($ThisFileInfo['mpeg']['audio']['window_switching_flag'][$granule][$channel] == '1') { // // $ThisFileInfo['mpeg']['audio']['block_type'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 2); // $SideInfoOffset += 2; // $ThisFileInfo['mpeg']['audio']['mixed_block_flag'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1); // $SideInfoOffset += 1; // // for ($region = 0; $region < 2; $region++) { // $ThisFileInfo['mpeg']['audio']['table_select'][$granule][$channel][$region] = substr($SideInfoBitstream, $SideInfoOffset, 5); // $SideInfoOffset += 5; // } // $ThisFileInfo['mpeg']['audio']['table_select'][$granule][$channel][2] = 0; // // for ($window = 0; $window < 3; $window++) { // $ThisFileInfo['mpeg']['audio']['subblock_gain'][$granule][$channel][$window] = substr($SideInfoBitstream, $SideInfoOffset, 3); // $SideInfoOffset += 3; // } // // } else { // // for ($region = 0; $region < 3; $region++) { // $ThisFileInfo['mpeg']['audio']['table_select'][$granule][$channel][$region] = substr($SideInfoBitstream, $SideInfoOffset, 5); // $SideInfoOffset += 5; // } // // $ThisFileInfo['mpeg']['audio']['region0_count'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 4); // $SideInfoOffset += 4; // $ThisFileInfo['mpeg']['audio']['region1_count'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 3); // $SideInfoOffset += 3; // $ThisFileInfo['mpeg']['audio']['block_type'][$granule][$channel] = 0; // } // // if ($ThisFileInfo['mpeg']['audio']['version'] == '1') { // $ThisFileInfo['mpeg']['audio']['preflag'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1); // $SideInfoOffset += 1; // } // $ThisFileInfo['mpeg']['audio']['scalefac_scale'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1); // $SideInfoOffset += 1; // $ThisFileInfo['mpeg']['audio']['count1table_select'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1); // $SideInfoOffset += 1; // } // } //} return true; }
function decodeMPEGaudioHeader($fd, $offset, &$ThisFileInfo, $recursivesearch = true, $ScanAsCBR = false, $FastMPEGheaderScan = false) { static $MPEGaudioVersionLookup; static $MPEGaudioLayerLookup; static $MPEGaudioBitrateLookup; static $MPEGaudioFrequencyLookup; static $MPEGaudioChannelModeLookup; static $MPEGaudioModeExtensionLookup; static $MPEGaudioEmphasisLookup; if (empty($MPEGaudioVersionLookup)) { $MPEGaudioVersionLookup = MPEGaudioVersionArray(); $MPEGaudioLayerLookup = MPEGaudioLayerArray(); $MPEGaudioBitrateLookup = MPEGaudioBitrateArray(); $MPEGaudioFrequencyLookup = MPEGaudioFrequencyArray(); $MPEGaudioChannelModeLookup = MPEGaudioChannelModeArray(); $MPEGaudioModeExtensionLookup = MPEGaudioModeExtensionArray(); $MPEGaudioEmphasisLookup = MPEGaudioEmphasisArray(); } if ($offset >= $ThisFileInfo['avdataend']) { $ThisFileInfo['error'] .= "\n" . 'end of file encounter looking for MPEG synch'; return false; } fseek($fd, $offset, SEEK_SET); $headerstring = fread($fd, 192); // MP3 audio frame structure: // $aa $aa $aa $aa [$bb $bb] $cc... // where $aa..$aa is the four-byte mpeg-audio header (below) // $bb $bb is the optional 2-byte CRC // and $cc... is the audio data $head4 = substr($headerstring, 0, 4); static $MPEGaudioHeaderDecodeCache = array(); if (isset($MPEGaudioHeaderDecodeCache[$head4])) { $MPEGheaderRawArray = $MPEGaudioHeaderDecodeCache[$head4]; } else { $MPEGheaderRawArray = MPEGaudioHeaderDecode($head4); $MPEGaudioHeaderDecodeCache[$head4] = $MPEGheaderRawArray; } static $MPEGaudioHeaderValidCache = array(); // Not in cache if (!isset($MPEGaudioHeaderValidCache[$head4])) { $MPEGaudioHeaderValidCache[$head4] = MPEGaudioHeaderValid($MPEGheaderRawArray); } if ($MPEGaudioHeaderValidCache[$head4]) { $ThisFileInfo['mpeg']['audio']['raw'] = $MPEGheaderRawArray; } else { $ThisFileInfo['error'] .= "\n" . 'Invalid MPEG audio header at offset ' . $offset; return false; } if (!$FastMPEGheaderScan) { $ThisFileInfo['mpeg']['audio']['version'] = $MPEGaudioVersionLookup[$ThisFileInfo['mpeg']['audio']['raw']['version']]; $ThisFileInfo['mpeg']['audio']['layer'] = $MPEGaudioLayerLookup[$ThisFileInfo['mpeg']['audio']['raw']['layer']]; $ThisFileInfo['mpeg']['audio']['channelmode'] = $MPEGaudioChannelModeLookup[$ThisFileInfo['mpeg']['audio']['raw']['channelmode']]; $ThisFileInfo['mpeg']['audio']['channels'] = $ThisFileInfo['mpeg']['audio']['channelmode'] == 'mono' ? 1 : 2; $ThisFileInfo['mpeg']['audio']['sample_rate'] = $MPEGaudioFrequencyLookup[$ThisFileInfo['mpeg']['audio']['version']][$ThisFileInfo['mpeg']['audio']['raw']['sample_rate']]; $ThisFileInfo['mpeg']['audio']['protection'] = !$ThisFileInfo['mpeg']['audio']['raw']['protection']; $ThisFileInfo['mpeg']['audio']['private'] = (bool) $ThisFileInfo['mpeg']['audio']['raw']['private']; $ThisFileInfo['mpeg']['audio']['modeextension'] = $MPEGaudioModeExtensionLookup[$ThisFileInfo['mpeg']['audio']['layer']][$ThisFileInfo['mpeg']['audio']['raw']['modeextension']]; $ThisFileInfo['mpeg']['audio']['copyright'] = (bool) $ThisFileInfo['mpeg']['audio']['raw']['copyright']; $ThisFileInfo['mpeg']['audio']['original'] = (bool) $ThisFileInfo['mpeg']['audio']['raw']['original']; $ThisFileInfo['mpeg']['audio']['emphasis'] = $MPEGaudioEmphasisLookup[$ThisFileInfo['mpeg']['audio']['raw']['emphasis']]; $ThisFileInfo['audio']['channels'] = $ThisFileInfo['mpeg']['audio']['channels']; $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['mpeg']['audio']['sample_rate']; if ($ThisFileInfo['mpeg']['audio']['protection']) { $ThisFileInfo['mpeg']['audio']['crc'] = BigEndian2Int(substr($headerstring, 4, 2)); } } $ThisFileInfo['mpeg']['audio']['padding'] = (bool) $ThisFileInfo['mpeg']['audio']['raw']['padding']; $ThisFileInfo['mpeg']['audio']['bitrate'] = $MPEGaudioBitrateLookup[$ThisFileInfo['mpeg']['audio']['version']][$ThisFileInfo['mpeg']['audio']['layer']][$ThisFileInfo['mpeg']['audio']['raw']['bitrate']]; // For Layer II there are some combinations of bitrate and mode which are not allowed. if (!$FastMPEGheaderScan && $ThisFileInfo['mpeg']['audio']['layer'] == 'II') { //$ThisFileInfo['fileformat'] = 'mp2'; $ThisFileInfo['audio']['dataformat'] = 'mp2'; switch ($ThisFileInfo['mpeg']['audio']['channelmode']) { case 'mono': if ($ThisFileInfo['mpeg']['audio']['bitrate'] == 'free' || $ThisFileInfo['mpeg']['audio']['bitrate'] <= 192) { // these are ok } else { $ThisFileInfo['error'] .= "\n" . $ThisFileInfo['mpeg']['audio']['bitrate'] . 'kbps not allowed in Layer II, ' . $ThisFileInfo['mpeg']['audio']['channelmode'] . '.'; return false; } break; case 'stereo': case 'joint stereo': case 'dual channel': if ($ThisFileInfo['mpeg']['audio']['bitrate'] == 'free' || $ThisFileInfo['mpeg']['audio']['bitrate'] == 64 || $ThisFileInfo['mpeg']['audio']['bitrate'] >= 96) { // these are ok } else { $ThisFileInfo['error'] .= "\n" . $ThisFileInfo['mpeg']['audio']['bitrate'] . 'kbps not allowed in Layer II, ' . $ThisFileInfo['mpeg']['audio']['channelmode'] . '.'; return false; } break; } } if ($ThisFileInfo['mpeg']['audio']['bitrate'] != 'free') { if ($ThisFileInfo['mpeg']['audio']['version'] == '1') { if ($ThisFileInfo['mpeg']['audio']['layer'] == 'I') { $FrameLengthCoefficient = 48; $FrameLengthPadding = $ThisFileInfo['mpeg']['audio']['padding'] ? 4 : 0; // For Layer I slot is 32 bits long, for Layer II and Layer III slot is 8 bits long. } else { // Layer II / III $FrameLengthCoefficient = 144; $FrameLengthPadding = $ThisFileInfo['mpeg']['audio']['padding'] ? 1 : 0; // For Layer I slot is 32 bits long, for Layer II and Layer III slot is 8 bits long. } } else { // MPEG-2 / MPEG-2.5 if ($ThisFileInfo['mpeg']['audio']['layer'] == 'I') { $FrameLengthCoefficient = 24; $FrameLengthPadding = $ThisFileInfo['mpeg']['audio']['padding'] ? 4 : 0; // For Layer I slot is 32 bits long, for Layer II and Layer III slot is 8 bits long. } else { // Layer II / III $FrameLengthCoefficient = 72; $FrameLengthPadding = $ThisFileInfo['mpeg']['audio']['padding'] ? 1 : 0; // For Layer I slot is 32 bits long, for Layer II and Layer III slot is 8 bits long. } } // FrameLengthInBytes = ((Coefficient * BitRate) / SampleRate) + Padding // http://66.96.216.160/cgi-bin/YaBB.pl?board=c&action=display&num=1018474068 // -> [Finding the next frame synch] on www.r3mix.net forums if the above link goes dead if ($ThisFileInfo['audio']['sample_rate'] > 0) { $ThisFileInfo['mpeg']['audio']['framelength'] = (int) floor($FrameLengthCoefficient * 1000 * $ThisFileInfo['mpeg']['audio']['bitrate'] / $ThisFileInfo['audio']['sample_rate']) + $FrameLengthPadding; } } $ThisFileInfo['audio']['bitrate'] = 1000 * $ThisFileInfo['mpeg']['audio']['bitrate']; if (isset($ThisFileInfo['mpeg']['audio']['framelength'])) { $nextframetestoffset = $offset + $ThisFileInfo['mpeg']['audio']['framelength']; } else { $ThisFileInfo['error'] .= "\n" . 'Frame at offset(' . $offset . ') is has an invalid frame length.'; return false; } //////////////////////////////////////////////////////////////////////////////////// // Variable-bitrate headers if (substr($headerstring, 4 + 32, 4) == 'VBRI') { // Fraunhofer VBR header is hardcoded 'VBRI' at offset 0x24 (36) // specs taken from http://minnie.tuhs.org/pipermail/mp3encoder/2001-January/001800.html $ThisFileInfo['mpeg']['audio']['bitrate_mode'] = 'vbr'; $ThisFileInfo['mpeg']['audio']['VBR_method'] = 'Fraunhofer'; $ThisFileInfo['audio']['codec'] = 'Fraunhofer'; $SideInfoData = substr($headerstring, 4 + 2, 32); $FraunhoferVBROffset = 4 + 32 + strlen('VBRI'); $Fraunhofer_EncoderVersion = substr($headerstring, $FraunhoferVBROffset, 2); $FraunhoferVBROffset += 2; $ThisFileInfo['mpeg']['audio']['VBR_encoder_version'] = BigEndian2Int($Fraunhofer_EncoderVersion); $Fraunhofer_EncoderDelay = substr($headerstring, $FraunhoferVBROffset, 2); $FraunhoferVBROffset += 2; $ThisFileInfo['mpeg']['audio']['VBR_encoder_delay'] = BigEndian2Int($Fraunhofer_EncoderDelay); $Fraunhofer_quality = substr($headerstring, $FraunhoferVBROffset, 2); $FraunhoferVBROffset += 2; $ThisFileInfo['mpeg']['audio']['VBR_quality'] = BigEndian2Int($Fraunhofer_quality); $Fraunhofer_Bytes = substr($headerstring, $FraunhoferVBROffset, 4); $FraunhoferVBROffset += 4; $ThisFileInfo['mpeg']['audio']['VBR_bytes'] = BigEndian2Int($Fraunhofer_Bytes); $Fraunhofer_Frames = substr($headerstring, $FraunhoferVBROffset, 4); $FraunhoferVBROffset += 4; $ThisFileInfo['mpeg']['audio']['VBR_frames'] = BigEndian2Int($Fraunhofer_Frames); $Fraunhofer_SeekOffsets = substr($headerstring, $FraunhoferVBROffset, 2); $FraunhoferVBROffset += 2; $ThisFileInfo['mpeg']['audio']['VBR_seek_offsets'] = BigEndian2Int($Fraunhofer_SeekOffsets); $FraunhoferVBROffset += 4; // hardcoded $00 $01 $00 $02 - purpose unknown $Fraunhofer_OffsetStride = substr($headerstring, $FraunhoferVBROffset, 2); $FraunhoferVBROffset += 2; $ThisFileInfo['mpeg']['audio']['VBR_seek_offsets_stride'] = BigEndian2Int($Fraunhofer_OffsetStride); $previousbyteoffset = $offset; for ($i = 0; $i < $ThisFileInfo['mpeg']['audio']['VBR_seek_offsets']; $i++) { $Fraunhofer_OffsetN = BigEndian2Int(substr($headerstring, $FraunhoferVBROffset, 2)); $FraunhoferVBROffset += 2; $ThisFileInfo['mpeg']['audio']['VBR_offsets_relative'][$i] = $Fraunhofer_OffsetN; $ThisFileInfo['mpeg']['audio']['VBR_offsets_absolute'][$i] = $Fraunhofer_OffsetN + $previousbyteoffset; $previousbyteoffset += $Fraunhofer_OffsetN; } } else { // Xing VBR header is hardcoded 'Xing' at a offset 0x0D (13), 0x15 (21) or 0x24 (36) // depending on MPEG layer and number of channels if ($ThisFileInfo['mpeg']['audio']['version'] == '1') { if ($ThisFileInfo['mpeg']['audio']['channelmode'] == 'mono') { // MPEG-1 (mono) $VBRidOffset = 4 + 17; // 0x15 $SideInfoData = substr($headerstring, 4 + 2, 17); } else { // MPEG-1 (stereo, joint-stereo, dual-channel) $VBRidOffset = 4 + 32; // 0x24 $SideInfoData = substr($headerstring, 4 + 2, 32); } } else { // 2 or 2.5 if ($ThisFileInfo['mpeg']['audio']['channelmode'] == 'mono') { // MPEG-2, MPEG-2.5 (mono) $VBRidOffset = 4 + 9; // 0x0D $SideInfoData = substr($headerstring, 4 + 2, 9); } else { // MPEG-2, MPEG-2.5 (stereo, joint-stereo, dual-channel) $VBRidOffset = 4 + 17; // 0x15 $SideInfoData = substr($headerstring, 4 + 2, 17); } } if (substr($headerstring, $VBRidOffset, strlen('Xing')) == 'Xing' || substr($headerstring, $VBRidOffset, strlen('Info')) == 'Info') { // 'Xing' is traditional Xing VBR frame, 'Info' is LAME-encoded CBR // 'This was done to avoid CBR files to be recognized as traditional Xing VBR files by some decoders.' $ThisFileInfo['mpeg']['audio']['bitrate_mode'] = 'vbr'; $ThisFileInfo['mpeg']['audio']['VBR_method'] = 'Xing'; $XingVBROffset = $VBRidOffset + strlen('Xing'); $ThisFileInfo['mpeg']['audio']['xing_flags_raw'] = substr($headerstring, $XingVBROffset, 4); $XingVBROffset += 4; $XingHeader_byte4 = BigEndian2Bin(substr($ThisFileInfo['mpeg']['audio']['xing_flags_raw'], 3, 1)); $ThisFileInfo['mpeg']['audio']['xing_flags']['frames'] = (bool) $XingHeader_byte4[4]; $ThisFileInfo['mpeg']['audio']['xing_flags']['bytes'] = (bool) $XingHeader_byte4[5]; $ThisFileInfo['mpeg']['audio']['xing_flags']['toc'] = (bool) $XingHeader_byte4[6]; $ThisFileInfo['mpeg']['audio']['xing_flags']['vbr_scale'] = (bool) $XingHeader_byte4[7]; if ($ThisFileInfo['mpeg']['audio']['xing_flags']['frames']) { $ThisFileInfo['mpeg']['audio']['VBR_frames'] = BigEndian2Int(substr($headerstring, $XingVBROffset, 4)); $XingVBROffset += 4; } if ($ThisFileInfo['mpeg']['audio']['xing_flags']['bytes']) { $ThisFileInfo['mpeg']['audio']['VBR_bytes'] = BigEndian2Int(substr($headerstring, $XingVBROffset, 4)); $XingVBROffset += 4; } if ($ThisFileInfo['mpeg']['audio']['xing_flags']['toc']) { $LAMEtocData = substr($headerstring, $XingVBROffset, 100); $XingVBROffset += 100; for ($i = 0; $i < 100; $i++) { $ThisFileInfo['mpeg']['audio']['toc'][$i] = ord($LAMEtocData[$i]); } } if ($ThisFileInfo['mpeg']['audio']['xing_flags']['vbr_scale']) { $ThisFileInfo['mpeg']['audio']['VBR_scale'] = BigEndian2Int(substr($headerstring, $XingVBROffset, 4)); $XingVBROffset += 4; } if (substr($headerstring, $XingVBROffset, 4) == 'LAME') { $ThisFileInfo['mpeg']['audio']['LAME']['short_version'] = substr($headerstring, $XingVBROffset, 9); $XingVBROffset += 9; $LAMEtagRevisionVBRmethod = BigEndian2Int(substr($headerstring, $XingVBROffset, 1)); $XingVBROffset += 1; $ThisFileInfo['mpeg']['audio']['LAME']['tag_revision'] = ($LAMEtagRevisionVBRmethod & 0xf0) >> 4; $ThisFileInfo['mpeg']['audio']['LAME']['vbr_method_raw'] = $LAMEtagRevisionVBRmethod & 0xf; $ThisFileInfo['mpeg']['audio']['LAME']['vbr_method'] = LAMEvbrMethodLookup($ThisFileInfo['mpeg']['audio']['LAME']['vbr_method_raw']); $ThisFileInfo['mpeg']['audio']['LAME']['lowpass_frequency'] = 100 * BigEndian2Int(substr($headerstring, $XingVBROffset, 1)); $XingVBROffset += 1; // http://privatewww.essex.ac.uk/~djmrob/replaygain/rg_data_format.html $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['peak_amplitude'] = BigEndian2Float(substr($headerstring, $XingVBROffset, 4)); $XingVBROffset += 4; $RadioReplayGainRaw = BigEndian2Int(substr($headerstring, $XingVBROffset, 2)); $XingVBROffset += 4; $ReplayGainID = ($RadioReplayGainRaw & 0xe000) >> 13; $ReplayGainNameKey = ''; switch ($ReplayGainID) { case 1: $ReplayGainNameKey = 'radio'; break; case 2: $ReplayGainNameKey = 'audiophile'; break; case 0: // replay gain not set // replay gain not set default: // reserved break; } if ($ReplayGainNameKey) { require_once GETID3_INCLUDEPATH . 'getid3.rgad.php'; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['raw']['name'] = ($RadioReplayGainRaw & 0xe000) >> 13; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['raw']['originator'] = ($RadioReplayGainRaw & 0x1c00) >> 10; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['raw']['sign_bit'] = ($RadioReplayGainRaw & 0x200) >> 9; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['raw']['gain_adjust'] = $RadioReplayGainRaw & 0x1ff; $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['name'] = RGADnameLookup($ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['raw']['name']); $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['originator'] = RGADoriginatorLookup($ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['raw']['originator']); $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['gain_db'] = RGADadjustmentLookup($ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['raw']['gain_adjust'], $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['raw']['sign_bit']); $ThisFileInfo['replay_gain']["{$ReplayGainNameKey}"]['peak'] = $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']['peak_amplitude']; $ThisFileInfo['replay_gain']["{$ReplayGainNameKey}"]['originator'] = $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['originator']; $ThisFileInfo['replay_gain']["{$ReplayGainNameKey}"]['adjustment'] = $ThisFileInfo['mpeg']['audio']['LAME']['RGAD']["{$ReplayGainNameKey}"]['gain_db']; } $EncodingFlagsATHtype = BigEndian2Int(substr($headerstring, $XingVBROffset, 1)); $XingVBROffset += 1; $ThisFileInfo['mpeg']['audio']['LAME']['encoding_flags']['nspsytune'] = (bool) ($EncodingFlagsATHtype & 0x10); $ThisFileInfo['mpeg']['audio']['LAME']['encoding_flags']['nssafejoint'] = (bool) ($EncodingFlagsATHtype & 0x20); $ThisFileInfo['mpeg']['audio']['LAME']['encoding_flags']['nogap_next'] = (bool) ($EncodingFlagsATHtype & 0x40); $ThisFileInfo['mpeg']['audio']['LAME']['encoding_flags']['nogap_prev'] = (bool) ($EncodingFlagsATHtype & 0x80); $ThisFileInfo['mpeg']['audio']['LAME']['ath_type'] = $EncodingFlagsATHtype & 0xf; $ABRbitrateMinBitrate = BigEndian2Int(substr($headerstring, $XingVBROffset, 1)); $XingVBROffset += 1; if ($ThisFileInfo['mpeg']['audio']['LAME']['vbr_method_raw'] == 2) { // Average BitRate (ABR) $ThisFileInfo['mpeg']['audio']['LAME']['bitrate_abr'] = $ABRbitrateMinBitrate; } elseif ($ABRbitrateMinBitrate > 0) { // Variable BitRate (VBR) - minimum bitrate $ThisFileInfo['mpeg']['audio']['LAME']['bitrate_min'] = $ABRbitrateMinBitrate; } $EncoderDelays = BigEndian2Int(substr($headerstring, $XingVBROffset, 3)); $XingVBROffset += 3; $ThisFileInfo['mpeg']['audio']['LAME']['encoder_delay'] = ($EncoderDelays & 0xfff000) >> 12; $ThisFileInfo['mpeg']['audio']['LAME']['end_padding'] = $EncoderDelays & 0xfff; $MiscByte = BigEndian2Int(substr($headerstring, $XingVBROffset, 1)); $XingVBROffset += 1; $ThisFileInfo['mpeg']['audio']['LAME']['noise_shaping_raw'] = $EncodingFlagsATHtype & 0x3; $ThisFileInfo['mpeg']['audio']['LAME']['stereo_mode_raw'] = ($EncodingFlagsATHtype & 0x1c) >> 2; $ThisFileInfo['mpeg']['audio']['LAME']['not_optimal_quality_raw'] = ($EncodingFlagsATHtype & 0x20) >> 5; $ThisFileInfo['mpeg']['audio']['LAME']['source_sample_freq_raw'] = ($EncodingFlagsATHtype & 0xc0) >> 6; $ThisFileInfo['mpeg']['audio']['LAME']['noise_shaping'] = $ThisFileInfo['mpeg']['audio']['LAME']['noise_shaping_raw']; $ThisFileInfo['mpeg']['audio']['LAME']['stereo_mode'] = LAMEmiscStereoModeLookup($ThisFileInfo['mpeg']['audio']['LAME']['stereo_mode_raw']); $ThisFileInfo['mpeg']['audio']['LAME']['not_optimal_quality'] = (bool) $ThisFileInfo['mpeg']['audio']['LAME']['not_optimal_quality_raw']; $ThisFileInfo['mpeg']['audio']['LAME']['source_sample_freq'] = LAMEmiscSourceSampleFrequencyLookup($ThisFileInfo['mpeg']['audio']['LAME']['source_sample_freq_raw']); $ThisFileInfo['mpeg']['audio']['LAME']['mp3_gain_raw'] = BigEndian2Int(substr($headerstring, $XingVBROffset, 1), false, true); $XingVBROffset += 1; $ThisFileInfo['mpeg']['audio']['LAME']['mp3_gain_db'] = 1.5 * $ThisFileInfo['mpeg']['audio']['LAME']['mp3_gain_raw']; $ThisFileInfo['mpeg']['audio']['LAME']['mp3_gain_factor'] = pow(2, $ThisFileInfo['mpeg']['audio']['LAME']['mp3_gain_db'] / 6); $PresetSurroundBytes = BigEndian2Int(substr($headerstring, $XingVBROffset, 2)); //$Reserved = ($PresetSurroundBytes & 0xC000); $ThisFileInfo['mpeg']['audio']['LAME']['surround_info_id'] = $PresetSurroundBytes & 0x3800; $ThisFileInfo['mpeg']['audio']['LAME']['surround_info'] = LAMEsurroundInfoLookup($ThisFileInfo['mpeg']['audio']['LAME']['surround_info_id']); $ThisFileInfo['mpeg']['audio']['LAME']['preset_used_id'] = $PresetSurroundBytes & 0x7ff; $XingVBROffset += 2; $ThisFileInfo['mpeg']['audio']['LAME']['audio_bytes'] = BigEndian2Int(substr($headerstring, $XingVBROffset, 4)); $XingVBROffset += 4; if ($ThisFileInfo['mpeg']['audio']['LAME']['audio_bytes'] > $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) { $ThisFileInfo['warning'] .= "\n" . 'Probable truncated file: expecting ' . $ThisFileInfo['mpeg']['audio']['LAME']['audio_bytes'] . ' bytes of audio data, only found ' . ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']); } $ThisFileInfo['mpeg']['audio']['LAME']['music_crc'] = BigEndian2Int(substr($headerstring, $XingVBROffset, 2)); $XingVBROffset += 2; $ThisFileInfo['mpeg']['audio']['LAME']['lame_tag_crc'] = BigEndian2Int(substr($headerstring, $XingVBROffset, 2)); $XingVBROffset += 2; // LAME CBR if ($ThisFileInfo['mpeg']['audio']['LAME']['vbr_method_raw'] == 1) { $ThisFileInfo['mpeg']['audio']['bitrate_mode'] = 'cbr'; if (empty($ThisFileInfo['mpeg']['audio']['bitrate']) || $ThisFileInfo['mpeg']['audio']['LAME']['bitrate_min'] != 255) { $ThisFileInfo['mpeg']['audio']['bitrate'] = $ThisFileInfo['mpeg']['audio']['LAME']['bitrate_min']; } } } } else { // not Fraunhofer or Xing VBR methods, most likely CBR (but could be VBR with no header) $ThisFileInfo['mpeg']['audio']['bitrate_mode'] = 'cbr'; if ($recursivesearch) { $ThisFileInfo['mpeg']['audio']['bitrate_mode'] = 'vbr'; if (RecursiveFrameScanning($fd, $ThisFileInfo, $offset, $nextframetestoffset, true)) { $recursivesearch = false; $ThisFileInfo['mpeg']['audio']['bitrate_mode'] = 'cbr'; } if ($ThisFileInfo['mpeg']['audio']['bitrate_mode'] == 'vbr') { $ThisFileInfo['warning'] .= "\n" . 'VBR file with no VBR header. Bitrate values calculated from actual frame bitrates.'; } } } } if ($ThisFileInfo['mpeg']['audio']['bitrate_mode'] == 'vbr' && isset($ThisFileInfo['mpeg']['audio']['VBR_frames']) && $ThisFileInfo['mpeg']['audio']['VBR_frames'] > 1) { $ThisFileInfo['mpeg']['audio']['VBR_frames']--; // don't count the Xing / VBRI frame if ($ThisFileInfo['mpeg']['audio']['version'] == '1' && $ThisFileInfo['mpeg']['audio']['layer'] == 'I') { $ThisFileInfo['mpeg']['audio']['VBR_bitrate'] = $ThisFileInfo['mpeg']['audio']['VBR_bytes'] / $ThisFileInfo['mpeg']['audio']['VBR_frames'] * 8 * ($ThisFileInfo['audio']['sample_rate'] / 384) / 1000; } elseif (($ThisFileInfo['mpeg']['audio']['version'] == '2' || $ThisFileInfo['mpeg']['audio']['version'] == '2.5') && $ThisFileInfo['mpeg']['audio']['layer'] == 'III') { $ThisFileInfo['mpeg']['audio']['VBR_bitrate'] = $ThisFileInfo['mpeg']['audio']['VBR_bytes'] / $ThisFileInfo['mpeg']['audio']['VBR_frames'] * 8 * ($ThisFileInfo['audio']['sample_rate'] / 576) / 1000; } else { $ThisFileInfo['mpeg']['audio']['VBR_bitrate'] = $ThisFileInfo['mpeg']['audio']['VBR_bytes'] / $ThisFileInfo['mpeg']['audio']['VBR_frames'] * 8 * ($ThisFileInfo['audio']['sample_rate'] / 1152) / 1000; } if ($ThisFileInfo['mpeg']['audio']['VBR_bitrate'] > 0) { $ThisFileInfo['audio']['bitrate'] = 1000 * $ThisFileInfo['mpeg']['audio']['VBR_bitrate']; $ThisFileInfo['mpeg']['audio']['bitrate'] = $ThisFileInfo['mpeg']['audio']['VBR_bitrate']; // to avoid confusion } } // End variable-bitrate headers //////////////////////////////////////////////////////////////////////////////////// if ($recursivesearch) { if (!RecursiveFrameScanning($fd, $ThisFileInfo, $offset, $nextframetestoffset, $ScanAsCBR)) { return false; } } if (false) { // experimental side info parsing section - not returning anything useful yet $SideInfoBitstream = BigEndian2Bin($SideInfoData); $SideInfoOffset = 0; if ($ThisFileInfo['mpeg']['audio']['version'] == '1') { if ($ThisFileInfo['mpeg']['audio']['channelmode'] == 'mono') { // MPEG-1 (mono) $ThisFileInfo['mpeg']['audio']['side_info']['main_data_begin'] = substr($SideInfoBitstream, $SideInfoOffset, 9); $SideInfoOffset += 9; $SideInfoOffset += 5; } else { // MPEG-1 (stereo, joint-stereo, dual-channel) $ThisFileInfo['mpeg']['audio']['side_info']['main_data_begin'] = substr($SideInfoBitstream, $SideInfoOffset, 9); $SideInfoOffset += 9; $SideInfoOffset += 3; } } else { // 2 or 2.5 if ($ThisFileInfo['mpeg']['audio']['channelmode'] == 'mono') { // MPEG-2, MPEG-2.5 (mono) $ThisFileInfo['mpeg']['audio']['side_info']['main_data_begin'] = substr($SideInfoBitstream, $SideInfoOffset, 8); $SideInfoOffset += 8; $SideInfoOffset += 1; } else { // MPEG-2, MPEG-2.5 (stereo, joint-stereo, dual-channel) $ThisFileInfo['mpeg']['audio']['side_info']['main_data_begin'] = substr($SideInfoBitstream, $SideInfoOffset, 8); $SideInfoOffset += 8; $SideInfoOffset += 2; } } if ($ThisFileInfo['mpeg']['audio']['version'] == '1') { for ($channel = 0; $channel < $ThisFileInfo['audio']['channels']; $channel++) { for ($scfsi_band = 0; $scfsi_band < 4; $scfsi_band++) { $ThisFileInfo['mpeg']['audio']['scfsi'][$channel][$scfsi_band] = substr($SideInfoBitstream, $SideInfoOffset, 1); $SideInfoOffset += 2; } } } for ($granule = 0; $granule < ($ThisFileInfo['mpeg']['audio']['version'] == '1' ? 2 : 1); $granule++) { for ($channel = 0; $channel < $ThisFileInfo['audio']['channels']; $channel++) { $ThisFileInfo['mpeg']['audio']['part2_3_length'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 12); $SideInfoOffset += 12; $ThisFileInfo['mpeg']['audio']['big_values'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 9); $SideInfoOffset += 9; $ThisFileInfo['mpeg']['audio']['global_gain'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 8); $SideInfoOffset += 8; if ($ThisFileInfo['mpeg']['audio']['version'] == '1') { $ThisFileInfo['mpeg']['audio']['scalefac_compress'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 4); $SideInfoOffset += 4; } else { $ThisFileInfo['mpeg']['audio']['scalefac_compress'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 9); $SideInfoOffset += 9; } $ThisFileInfo['mpeg']['audio']['window_switching_flag'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1); $SideInfoOffset += 1; if ($ThisFileInfo['mpeg']['audio']['window_switching_flag'][$granule][$channel] == '1') { $ThisFileInfo['mpeg']['audio']['block_type'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 2); $SideInfoOffset += 2; $ThisFileInfo['mpeg']['audio']['mixed_block_flag'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1); $SideInfoOffset += 1; for ($region = 0; $region < 2; $region++) { $ThisFileInfo['mpeg']['audio']['table_select'][$granule][$channel][$region] = substr($SideInfoBitstream, $SideInfoOffset, 5); $SideInfoOffset += 5; } $ThisFileInfo['mpeg']['audio']['table_select'][$granule][$channel][2] = 0; for ($window = 0; $window < 3; $window++) { $ThisFileInfo['mpeg']['audio']['subblock_gain'][$granule][$channel][$window] = substr($SideInfoBitstream, $SideInfoOffset, 3); $SideInfoOffset += 3; } } else { for ($region = 0; $region < 3; $region++) { $ThisFileInfo['mpeg']['audio']['table_select'][$granule][$channel][$region] = substr($SideInfoBitstream, $SideInfoOffset, 5); $SideInfoOffset += 5; } $ThisFileInfo['mpeg']['audio']['region0_count'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 4); $SideInfoOffset += 4; $ThisFileInfo['mpeg']['audio']['region1_count'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 3); $SideInfoOffset += 3; $ThisFileInfo['mpeg']['audio']['block_type'][$granule][$channel] = 0; } if ($ThisFileInfo['mpeg']['audio']['version'] == '1') { $ThisFileInfo['mpeg']['audio']['preflag'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1); $SideInfoOffset += 1; } $ThisFileInfo['mpeg']['audio']['scalefac_scale'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1); $SideInfoOffset += 1; $ThisFileInfo['mpeg']['audio']['count1table_select'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1); $SideInfoOffset += 1; } } } return true; }
function ID3v2FrameProcessing($frame_name, $frame_flags, &$MP3fileInfo) { // define $frame_arrayindex once here (used for many frames), override or ignore as neccesary $frame_arrayindex = count($MP3fileInfo['id3']['id3v2']["{$frame_name}"]); // 'data', 'datalength' if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'])) { $frame_arrayindex--; } if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'])) { $frame_arrayindex--; } if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'])) { $frame_arrayindex--; } if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'])) { $frame_arrayindex--; } if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['timestampformat'])) { $frame_arrayindex--; } if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { // frame flags are not part of the ID3v2.2 standard if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 3) { // Frame Header Flags // %abc00000 %ijk00000 $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['TagAlterPreservation'] = (bool) substr($frame_flags, 0, 1); // a - Tag alter preservation $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['FileAlterPreservation'] = (bool) substr($frame_flags, 1, 1); // b - File alter preservation $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['ReadOnly'] = (bool) substr($frame_flags, 2, 1); // c - Read only $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['compression'] = (bool) substr($frame_flags, 8, 1); // i - Compression $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['Encryption'] = (bool) substr($frame_flags, 9, 1); // j - Encryption $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['GroupingIdentity'] = (bool) substr($frame_flags, 10, 1); // k - Grouping identity } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 4) { // Frame Header Flags // %0abc0000 %0h00kmnp $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['TagAlterPreservation'] = (bool) substr($frame_flags, 1, 1); // a - Tag alter preservation $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['FileAlterPreservation'] = (bool) substr($frame_flags, 2, 1); // b - File alter preservation $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['ReadOnly'] = (bool) substr($frame_flags, 3, 1); // c - Read only $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['GroupingIdentity'] = (bool) substr($frame_flags, 9, 1); // h - Grouping identity $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['compression'] = (bool) substr($frame_flags, 12, 1); // k - Compression $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['Encryption'] = (bool) substr($frame_flags, 13, 1); // m - Encryption $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['Unsynchronisation'] = (bool) substr($frame_flags, 14, 1); // n - Unsynchronisation $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['DataLengthIndicator'] = (bool) substr($frame_flags, 15, 1); // p - Data length indicator } } // Frame-level de-unsynchronization - ID3v2.4 if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['Unsynchronisation'])) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = DeUnSynchronise($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); } // Frame-level de-compression if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['compression'])) { // it's on the wishlist :) } } if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'UFID' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'UFI') { // 4.1 UFI Unique file identifier // There may be more than one 'UFID' frame in a tag, // but only one with the same 'Owner identifier'. // <Header for 'Unique file identifier', ID: 'UFID'> // Owner identifier <text string> $00 // Identifier <up to 64 bytes binary data> $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0)); $frame_idstring = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 0, $frame_terminatorpos); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['ownerid'] = $frame_idstring; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(chr(0))); if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'TXXX' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'TXX') { // 4.2.2 TXX User defined text information frame // There may be more than one 'TXXX' frame in each tag, // but only one with the same description. // <Header for 'User defined text information frame', ID: 'TXXX'> // Text encoding $xx // Description <text string according to encoding> $00 (00) // Value <text string according to encoding> $frame_offset = 0; $frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset); if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) { $frame_terminatorpos++; // strpos() fooled because 2nd byte of Unicode chars are often 0x00 } $frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_description) === 0) { $frame_description = ''; } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding); if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description; if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($frame_description, $frame_textencoding); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding))); if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidata'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'], $frame_textencoding); } if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($frame_name[0] == 'T') { // 4.2. T??[?] Text information frame // There may only be one text information frame of its kind in an tag. // <Header for 'Text information frame', ID: 'T000' - 'TZZZ', // excluding 'TXXX' described in 4.2.6.> // Text encoding $xx // Information <text string(s) according to encoding> $frame_offset = 0; $frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); // $MP3fileInfo['id3']['id3v2']["$frame_name"]['data'] = substr($MP3fileInfo['id3']['id3v2']["$frame_name"]['data'], $frame_offset); // this one-line method should work, but as a safeguard against null-padded data, do it the safe way $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset); if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) { $frame_terminatorpos++; // strpos() fooled because 2nd byte of Unicode chars are often 0x00 } if ($frame_terminatorpos) { // there are null bytes after the data - this is not according to spec // only use data up to first null byte $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); } else { // no null bytes following data, just use all data $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); } if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['compression']) || !$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['compression']) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['asciidata'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_textencoding); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encodingid'] = $frame_textencoding; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'WXXX' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'WXX') { // 4.3.2 WXX User defined URL link frame // There may be more than one 'WXXX' frame in each tag, // but only one with the same description // <Header for 'User defined URL link frame', ID: 'WXXX'> // Text encoding $xx // Description <text string according to encoding> $00 (00) // URL <text string> $frame_offset = 0; $frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset); if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) { $frame_terminatorpos++; // strpos() fooled because 2nd byte of Unicode chars are often 0x00 } $frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_description) === 0) { $frame_description = ''; } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding))); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding)); if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) { $frame_terminatorpos++; // strpos() fooled because 2nd byte of Unicode chars are often 0x00 } if ($frame_terminatorpos) { // there are null bytes after the data - this is not according to spec // only use data up to first null byte $frame_urldata = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 0, $frame_terminatorpos); } else { // no null bytes following data, just use all data $frame_urldata = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']; } if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['url'] = $frame_urldata; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description; if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($frame_description, $frame_textencoding); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($frame_name[0] == 'W') { // 4.3. W??? URL link frames // There may only be one URL link frame of its kind in a tag, // except when stated otherwise in the frame description // <Header for 'URL link frame', ID: 'W000' - 'WZZZ', excluding 'WXXX' // described in 4.3.2.> // URL <text string> $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['url'] = trim($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 3 && $frame_name == 'IPLS' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'IPL') { // 4.4 IPL Involved people list (ID3v2.2 only) // There may only be one 'IPL' frame in each tag // <Header for 'User defined URL link frame', ID: 'IPL'> // Text encoding $xx // People list strings <textstrings> $frame_offset = 0; $frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encodingid'] = $frame_textencoding; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encoding'] = TextEncodingLookup('encoding', $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encodingid']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['asciidata'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_textencoding); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'MCDI' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'MCI') { // 4.5 MCI Music CD identifier // There may only be one 'MCDI' frame in each tag // <Header for 'Music CD identifier', ID: 'MCDI'> // CD TOC <binary data> $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); // no other special processing needed } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'ETCO' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'ETC') { // 4.6 ETC Event timing codes // There may only be one 'ETCO' frame in each tag // <Header for 'Event timing codes', ID: 'ETCO'> // Time stamp format $xx // Where time stamp format is: // $01 (32-bit value) MPEG frames from beginning of file // $02 (32-bit value) milliseconds from beginning of file // Followed by a list of key events in the following format: // Type of event $xx // Time stamp $xx (xx ...) // The 'Time stamp' is set to zero if directly at the beginning of the sound // or after the previous event. All events MUST be sorted in chronological order. $frame_offset = 0; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['timestampformat'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); while ($frame_offset < strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'])) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['typeid'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['type'] = ETCOEventLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['typeid']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['timestamp'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4)); $frame_offset += 4; } if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'MLLT' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'MLL') { // 4.7 MLL MPEG location lookup table // There may only be one 'MLLT' frame in each tag // <Header for 'Location lookup table', ID: 'MLLT'> // MPEG frames between reference $xx xx // Bytes between reference $xx xx xx // Milliseconds between reference $xx xx xx // Bits for bytes deviation $xx // Bits for milliseconds dev. $xx // Then for every reference the following data is included; // Deviation in bytes %xxx.... // Deviation in milliseconds %xxx.... $frame_offset = 0; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framesbetweenreferences'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 0, 2)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bytesbetweenreferences'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 2, 3)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['msbetweenreferences'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 5, 3)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsforbytesdeviation'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 8, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsformsdeviation'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 9, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 10); while ($frame_offset < strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'])) { $deviationbitstream .= BigEndian2Bin(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); } while (strlen($deviationbitstream)) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['bytedeviation'] = bindec(substr($deviationbitstream, 0, $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsforbytesdeviation'])); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['msdeviation'] = bindec(substr($deviationbitstream, $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsforbytesdeviation'], $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsformsdeviation'])); $deviationbitstream = substr($deviationbitstream, $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsforbytesdeviation'] + $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsformsdeviation']); $frame_arrayindex++; } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'SYTC' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'STC') { // 4.8 STC Synchronised tempo codes // There may only be one 'SYTC' frame in each tag // <Header for 'Synchronised tempo codes', ID: 'SYTC'> // Time stamp format $xx // Tempo data <binary data> // Where time stamp format is: // $01 (32-bit value) MPEG frames from beginning of file // $02 (32-bit value) milliseconds from beginning of file $frame_offset = 0; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['timestampformat'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); while ($frame_offset < strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'])) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['tempo'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['tempo'] == 255) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['tempo'] += ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['timestamp'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4)); $frame_offset += 4; $frame_arrayindex++; } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'USLT' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'ULT') { // 4.9 ULT Unsynchronised lyric/text transcription // There may be more than one 'Unsynchronised lyrics/text transcription' frame // in each tag, but only one with the same language and content descriptor. // <Header for 'Unsynchronised lyrics/text transcription', ID: 'USLT'> // Text encoding $xx // Language $xx xx xx // Content descriptor <text string according to encoding> $00 (00) // Lyrics/text <full text string according to encoding> $frame_offset = 0; $frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_language = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3); $frame_offset += 3; $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset); if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) { $frame_terminatorpos++; // strpos() fooled because 2nd byte of Unicode chars are often 0x00 } $frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_description) === 0) { $frame_description = ''; } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding))); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['language'] = $frame_language; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['languagename'] = LanguageLookup($frame_language, FALSE); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description; if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'], $frame_textencoding); } if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidata'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'], $frame_textencoding); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'SYLT' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'SLT') { // 4.10 SLT Synchronised lyric/text // There may be more than one 'SYLT' frame in each tag, // but only one with the same language and content descriptor. // <Header for 'Synchronised lyrics/text', ID: 'SYLT'> // Text encoding $xx // Language $xx xx xx // Time stamp format $xx // $01 (32-bit value) MPEG frames from beginning of file // $02 (32-bit value) milliseconds from beginning of file // Content type $xx // Content descriptor <text string according to encoding> $00 (00) // Terminated text to be synced (typically a syllable) // Sync identifier (terminator to above string) $00 (00) // Time stamp $xx (xx ...) $frame_offset = 0; $frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_language = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3); $frame_offset += 3; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['timestampformat'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['contenttypeid'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['contenttype'] = SYTLContentTypeLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['contenttypeid']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['language'] = $frame_language; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['languagename'] = LanguageLookup($frame_language, FALSE); if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } $timestampindex = 0; $frame_remainingdata = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); while (strlen($frame_remainingdata)) { $frame_offset = 0; $frame_terminatorpos = strpos($frame_remainingdata, TextEncodingLookup('terminator', $frame_textencoding)); if ($frame_terminatorpos === FALSE) { $frame_remainingdata = ''; } else { if (ord(substr($frame_remainingdata, $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) { $frame_terminatorpos++; // strpos() fooled because 2nd byte of Unicode chars are often 0x00 } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']["{$timestampindex}"]['data'] = substr($frame_remainingdata, $frame_offset, $frame_terminatorpos - $frame_offset); if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']["{$timestampindex}"]['asciidata'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']["{$timestampindex}"]['data'], $frame_textencoding); } $frame_remainingdata = substr($frame_remainingdata, $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding))); if ($timestampindex == 0 && ord($frame_remainingdata[0]) != 0) { // timestamp probably omitted for first data item } else { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']["{$timestampindex}"]['timestamp'] = BigEndian2Int(substr($frame_remainingdata, 0, 4)); $frame_remainingdata = substr($frame_remainingdata, 4); } $timestampindex++; } } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'COMM' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'COM') { // 4.11 COM Comments // There may be more than one comment frame in each tag, // but only one with the same language and content descriptor. // <Header for 'Comment', ID: 'COMM'> // Text encoding $xx // Language $xx xx xx // Short content descrip. <text string according to encoding> $00 (00) // The actual text <full text string according to encoding> $frame_offset = 0; $frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_language = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3); $frame_offset += 3; $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset); if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) { $frame_terminatorpos++; // strpos() fooled because 2nd byte of Unicode chars are often 0x00 } $frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_description) === 0) { $frame_description = ''; } $frame_text = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding))); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['language'] = $frame_language; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['languagename'] = LanguageLookup($frame_language, FALSE); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = $frame_text; if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($frame_description, $frame_textencoding); } if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidata'] = RoughTranslateUnicodeToASCII($frame_text, $frame_textencoding); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 4 && $frame_name == 'RVA2') { // 4.11 RVA2 Relative volume adjustment (2) (ID3v2.4+ only) // There may be more than one 'RVA2' frame in each tag, // but only one with the same identification string // <Header for 'Relative volume adjustment (2)', ID: 'RVA2'> // Identification <text string> $00 // The 'identification' string is used to identify the situation and/or // device where this adjustment should apply. The following is then // repeated for every channel: // Type of channel $xx // Volume adjustment $xx xx // Bits representing peak $xx // Peak volume $xx (xx ...) $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0)); $frame_idstring = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 0, $frame_terminatorpos); if (ord($frame_idstring) === 0) { $frame_idstring = ''; } $frame_remainingdata = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(chr(0))); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_idstring; while (strlen($frame_remainingdata)) { $frame_offset = 0; $frame_channeltypeid = substr($frame_remainingdata, $frame_offset++, 1); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]["{$frame_channeltypeid}"]['channeltypeid'] = $frame_channeltypeid; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]["{$frame_channeltypeid}"]['channeltype'] = RVA2ChannelTypeLookup($frame_channeltypeid); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]["{$frame_channeltypeid}"]['volumeadjust'] = BigEndian2Int(substr($frame_remainingdata, $frame_offset, 2)) - 0x7fff; // 16-bit signed $frame_offset += 2; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]["{$frame_channeltypeid}"]['bitspeakvolume'] = ord(substr($frame_remainingdata, $frame_offset++, 1)); $frame_bytespeakvolume = ceil($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_channeltypeid}"]['bitspeakvolume'] / 8); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]["{$frame_channeltypeid}"]['peakvolume'] = BigEndian2Int(substr($frame_remainingdata, $frame_offset, $frame_bytespeakvolume)); $frame_remainingdata = substr($frame_remainingdata, $frame_offset + $frame_bytespeakvolume); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]["{$frame_channeltypeid}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 3 && $frame_name == 'RVAD' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'RVA') { // 4.12 RVA Relative volume adjustment (ID3v2.2 only) // There may only be one 'RVA' frame in each tag // <Header for 'Relative volume adjustment', ID: 'RVA'> // ID3v2.2 => Increment/decrement %000000ba // ID3v2.3 => Increment/decrement %00fedcba // Bits used for volume descr. $xx // Relative volume change, right $xx xx (xx ...) // a // Relative volume change, left $xx xx (xx ...) // b // Peak volume right $xx xx (xx ...) // Peak volume left $xx xx (xx ...) // ID3v2.3 only, optional (not present in ID3v2.2): // Relative volume change, right back $xx xx (xx ...) // c // Relative volume change, left back $xx xx (xx ...) // d // Peak volume right back $xx xx (xx ...) // Peak volume left back $xx xx (xx ...) // ID3v2.3 only, optional (not present in ID3v2.2): // Relative volume change, center $xx xx (xx ...) // e // Peak volume center $xx xx (xx ...) // ID3v2.3 only, optional (not present in ID3v2.2): // Relative volume change, bass $xx xx (xx ...) // f // Peak volume bass $xx xx (xx ...) $frame_offset = 0; $frame_incrdecrflags = BigEndian2Bin(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['right'] = (bool) substr($frame_incrdecrflags, 6, 1); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['left'] = (bool) substr($frame_incrdecrflags, 7, 1); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsvolume'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_bytesvolume = ceil($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsvolume'] / 8); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['right'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume)); if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['right'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['right'] *= -1; } $frame_offset += $frame_bytesvolume; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['left'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume)); if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['left'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['left'] *= -1; } $frame_offset += $frame_bytesvolume; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakvolume']['right'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume)); $frame_offset += $frame_bytesvolume; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakvolume']['left'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume)); $frame_offset += $frame_bytesvolume; if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); if (strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']) > 0) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['rightrear'] = (bool) substr($frame_incrdecrflags, 4, 1); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['leftrear'] = (bool) substr($frame_incrdecrflags, 5, 1); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['rightrear'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume)); if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['rightrear'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['rightrear'] *= -1; } $frame_offset += $frame_bytesvolume; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['leftrear'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume)); if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['leftrear'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['leftrear'] *= -1; } $frame_offset += $frame_bytesvolume; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakvolume']['rightrear'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume)); $frame_offset += $frame_bytesvolume; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakvolume']['leftrear'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume)); $frame_offset += $frame_bytesvolume; } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); if (strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']) > 0) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['center'] = (bool) substr($frame_incrdecrflags, 3, 1); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['center'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume)); if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['center'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['center'] *= -1; } $frame_offset += $frame_bytesvolume; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakvolume']['center'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume)); $frame_offset += $frame_bytesvolume; } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); if (strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']) > 0) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['bass'] = (bool) substr($frame_incrdecrflags, 2, 1); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['bass'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume)); if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['bass'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['bass'] *= -1; } $frame_offset += $frame_bytesvolume; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakvolume']['bass'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume)); $frame_offset += $frame_bytesvolume; } } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 4 && $frame_name == 'EQU2') { // 4.12 EQU2 Equalisation (2) (ID3v2.4+ only) // There may be more than one 'EQU2' frame in each tag, // but only one with the same identification string // <Header of 'Equalisation (2)', ID: 'EQU2'> // Interpolation method $xx // $00 Band // $01 Linear // Identification <text string> $00 // The following is then repeated for every adjustment point // Frequency $xx xx // Volume adjustment $xx xx $frame_offset = 0; $frame_interpolationmethod = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_idstring = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_idstring) === 0) { $frame_idstring = ''; } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_idstring; $frame_remainingdata = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(chr(0))); while (strlen($frame_remainingdata)) { $frame_frequency = BigEndian2Int(substr($frame_remainingdata, 0, 2)) / 2; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']["{$frame_frequency}"] = BigEndian2Int(substr($frame_remainingdata, 2, 2)); $frame_remainingdata = substr($frame_remainingdata, 4); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['interpolationmethod'] = $frame_interpolationmethod; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 3 && $frame_name == 'EQUA' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'EQU') { // 4.13 EQU Equalisation (ID3v2.2 only) // There may only be one 'EQUA' frame in each tag // <Header for 'Relative volume adjustment', ID: 'EQU'> // Adjustment bits $xx // This is followed by 2 bytes + ('adjustment bits' rounded up to the // nearest byte) for every equalisation band in the following format, // giving a frequency range of 0 - 32767Hz: // Increment/decrement %x (MSB of the Frequency) // Frequency (lower 15 bits) // Adjustment $xx (xx ...) $frame_offset = 0; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['adjustmentbits'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1); $frame_adjustmentbytes = ceil($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['adjustmentbits'] / 8); $frame_remainingdata = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); while (strlen($frame_remainingdata)) { $frame_frequencystr = BigEndian2Bin(substr($frame_remainingdata, 0, 2)); $frame_incdec = (bool) substr($frame_frequencystr, 0, 1); $frame_frequency = bindec(substr($frame_frequencystr, 1, 15)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_frequency}"]['incdec'] = $frame_incdec; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_frequency}"]['adjustment'] = BigEndian2Int(substr($frame_remainingdata, 2, $frame_adjustmentbytes)); if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_frequency}"]['incdec'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_frequency}"]['adjustment'] *= -1; } $frame_remainingdata = substr($frame_remainingdata, 2 + $frame_adjustmentbytes); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'RVRB' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'REV') { // 4.14 REV Reverb // There may only be one 'RVRB' frame in each tag. // <Header for 'Reverb', ID: 'RVRB'> // Reverb left (ms) $xx xx // Reverb right (ms) $xx xx // Reverb bounces, left $xx // Reverb bounces, right $xx // Reverb feedback, left to left $xx // Reverb feedback, left to right $xx // Reverb feedback, right to right $xx // Reverb feedback, right to left $xx // Premix left to right $xx // Premix right to left $xx $frame_offset = 0; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['left'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2)); $frame_offset += 2; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['right'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2)); $frame_offset += 2; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bouncesL'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bouncesR'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['feedbackLL'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['feedbackLR'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['feedbackRR'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['feedbackRL'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['premixLR'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['premixRL'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'APIC' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'PIC') { // 4.15 PIC Attached picture // There may be several pictures attached to one file, // each in their individual 'APIC' frame, but only one // with the same content descriptor // <Header for 'Attached picture', ID: 'APIC'> // Text encoding $xx // ID3v2.3+ => MIME type <text string> $00 // ID3v2.2 => Image format $xx xx xx // Picture type $xx // Description <text string according to encoding> $00 (00) // Picture data <binary data> $frame_offset = 0; $frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 2) { $frame_imagetype = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3); if (strtolower($frame_imagetype) == 'ima') { // complete hack for mp3Rage (www.chaoticsoftware.com) that puts ID3v2.3-formatted // MIME type instead of 3-char ID3v2.2-format image type (thanks xbhoff@pacbell.net) $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_mimetype = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_mimetype) === 0) { $frame_mimetype = ''; } $frame_imagetype = strtoupper(str_replace('image/', '', strtolower($frame_mimetype))); if ($frame_imagetype == 'JPEG') { $frame_imagetype = 'JPG'; } $frame_offset = $frame_terminatorpos + strlen(chr(0)); } else { $frame_offset += 3; } } if ($MP3fileInfo['id3']['id3v2']['majorversion'] > 2) { $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_mimetype = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_mimetype) === 0) { $frame_mimetype = ''; } $frame_offset = $frame_terminatorpos + strlen(chr(0)); } $frame_picturetype = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset); if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) { $frame_terminatorpos++; // strpos() fooled because 2nd byte of Unicode chars are often 0x00 } $frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_description) === 0) { $frame_description = ''; } if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding); if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 2) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['imagetype'] = $frame_imagetype; } else { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['mime'] = $frame_mimetype; } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['picturetypeid'] = $frame_picturetype; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['picturetype'] = APICPictureTypeLookup($frame_picturetype); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description; if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($frame_description, $frame_textencoding); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding))); include_once GETID3_INCLUDEPATH . 'getid3.getimagesize.php'; $imagechunkcheck = GetDataImageSize($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']); if ($imagechunkcheck[2] >= 1 && $imagechunkcheck[2] <= 3) { $imagetypes = array(1 => 'image/gif', 2 => 'image/jpeg', 3 => 'image/png'); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['image_mime'] = $imagetypes["{$imagechunkcheck[2]}"]; if ($imagechunkcheck[0]) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['image_width'] = $imagechunkcheck[0]; } if ($imagechunkcheck[1]) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['image_height'] = $imagechunkcheck[1]; } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['image_bytes'] = strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']); //$MP3fileInfo['id3']['id3v2']["$frame_name"]["$frame_arrayindex"]['image_offset'] = $MP3fileInfo['id3']['id3v2']["$frame_name"]['dataoffset'] + $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)) + ID3v2HeaderLength($MP3fileInfo['id3']['id3v2']['majorversion']); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'GEOB' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'GEO') { // 4.16 GEO General encapsulated object // There may be more than one 'GEOB' frame in each tag, // but only one with the same content descriptor // <Header for 'General encapsulated object', ID: 'GEOB'> // Text encoding $xx // MIME type <text string> $00 // Filename <text string according to encoding> $00 (00) // Content description <text string according to encoding> $00 (00) // Encapsulated object <binary data> $frame_offset = 0; $frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_mimetype = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_mimetype) === 0) { $frame_mimetype = ''; } $frame_offset = $frame_terminatorpos + strlen(chr(0)); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset); if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) { $frame_terminatorpos++; // strpos() fooled because 2nd byte of Unicode chars are often 0x00 } $frame_filename = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_filename) === 0) { $frame_filename = ''; } $frame_offset = $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset); if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) { $frame_terminatorpos++; // strpos() fooled because 2nd byte of Unicode chars are often 0x00 } $frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_description) === 0) { $frame_description = ''; } $frame_offset = $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['objectdata'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['mime'] = $frame_mimetype; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['filename'] = $frame_filename; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description; if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($frame_description, $frame_textencoding); } unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'PCNT' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'CNT') { // 4.17 CNT Play counter // There may only be one 'PCNT' frame in each tag. // When the counter reaches all one's, one byte is inserted in // front of the counter thus making the counter eight bits bigger // <Header for 'Play counter', ID: 'PCNT'> // Counter $xx xx xx xx (xx ...) $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = BigEndian2Int($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'POPM' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'POP') { // 4.18 POP Popularimeter // There may be more than one 'POPM' frame in each tag, // but only one with the same email address // <Header for 'Popularimeter', ID: 'POPM'> // Email to user <text string> $00 // Rating $xx // Counter $xx xx xx xx (xx ...) $frame_offset = 0; $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_emailaddress = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_emailaddress) === 0) { $frame_emailaddress = ''; } $frame_offset = $frame_terminatorpos + strlen(chr(0)); $frame_rating = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['email'] = $frame_emailaddress; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['rating'] = $frame_rating; if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'RBUF' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'BUF') { // 4.19 BUF Recommended buffer size // There may only be one 'RBUF' frame in each tag // <Header for 'Recommended buffer size', ID: 'RBUF'> // Buffer size $xx xx xx // Embedded info flag %0000000x // Offset to next tag $xx xx xx xx $frame_offset = 0; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['buffersize'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3)); $frame_offset += 3; $frame_embeddedinfoflags = BigEndian2Bin(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['embededinfo'] = (bool) substr($frame_embeddedinfoflags, 7, 1); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['nexttagoffset'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'CRM') { // 4.20 Encrypted meta frame (ID3v2.2 only) // There may be more than one 'CRM' frame in a tag, // but only one with the same 'owner identifier' // <Header for 'Encrypted meta frame', ID: 'CRM'> // Owner identifier <textstring> $00 (00) // Content/explanation <textstring> $00 (00) // Encrypted datablock <binary data> $frame_offset = 0; $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_ownerid = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_ownerid) === 0) { $frame_ownerid = count($MP3fileInfo['id3']['id3v2']["{$frame_name}"]) - 1; } $frame_offset = $frame_terminatorpos + strlen(chr(0)); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_description) === 0) { $frame_description = ''; } $frame_offset = $frame_terminatorpos + strlen(chr(0)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['ownerid'] = $frame_ownerid; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'AENC' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'CRA') { // 4.21 CRA Audio encryption // There may be more than one 'AENC' frames in a tag, // but only one with the same 'Owner identifier' // <Header for 'Audio encryption', ID: 'AENC'> // Owner identifier <text string> $00 // Preview start $xx xx // Preview length $xx xx // Encryption info <binary data> $frame_offset = 0; $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_ownerid = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_ownerid) === 0) { $frame_ownerid == ''; } $frame_offset = $frame_terminatorpos + strlen(chr(0)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['ownerid'] = $frame_ownerid; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['previewstart'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2)); $frame_offset += 2; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['previewlength'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2)); $frame_offset += 2; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encryptioninfo'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_ownerid}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'LINK' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'LNK') { // 4.22 LNK Linked information // There may be more than one 'LINK' frame in a tag, // but only one with the same contents // <Header for 'Linked information', ID: 'LINK'> // ID3v2.3+ => Frame identifier $xx xx xx xx // ID3v2.2 => Frame identifier $xx xx xx // URL <text string> $00 // ID and additional data <text string(s)> $frame_offset = 0; if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 2) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['frameid'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3); $frame_offset += 3; } else { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['frameid'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4); $frame_offset += 4; } $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_url = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_url) === 0) { $frame_url = ''; } $frame_offset = $frame_terminatorpos + strlen(chr(0)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['url'] = $frame_url; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['additionaldata'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'POSS') { // 4.21 POSS Position synchronisation frame (ID3v2.3+ only) // There may only be one 'POSS' frame in each tag // <Head for 'Position synchronisation', ID: 'POSS'> // Time stamp format $xx // Position $xx (xx ...) $frame_offset = 0; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['timestampformat'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['position'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'USER') { // 4.22 USER Terms of use (ID3v2.3+ only) // There may be more than one 'Terms of use' frame in a tag, // but only one with the same 'Language' // <Header for 'Terms of use frame', ID: 'USER'> // Text encoding $xx // Language $xx xx xx // The actual text <text string according to encoding> $frame_offset = 0; $frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_language = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3); $frame_offset += 3; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['language'] = $frame_language; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['languagename'] = LanguageLookup($frame_language, FALSE); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['encodingid'] = $frame_textencoding; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); if (!$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['flags']['compression']) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['asciidata'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['data'], $frame_textencoding); } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'OWNE') { // 4.23 OWNE Ownership frame (ID3v2.3+ only) // There may only be one 'OWNE' frame in a tag // <Header for 'Ownership frame', ID: 'OWNE'> // Text encoding $xx // Price paid <text string> $00 // Date of purch. <text string> // Seller <text string according to encoding> $frame_offset = 0; $frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encodingid'] = $frame_textencoding; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_pricepaid = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); $frame_offset = $frame_terminatorpos + strlen(chr(0)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['pricepaid']['currencyid'] = substr($frame_pricepaid, 0, 3); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['pricepaid']['currency'] = LookupCurrency($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['pricepaid']['currencyid'], 'units'); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['pricepaid']['value'] = substr($frame_pricepaid, 3); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['purchasedate'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 8); if (!IsValidDateStampString($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['purchasedate'])) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['purchasedateunix'] = mktime(0, 0, 0, substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['purchasedate'], 4, 2), substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['purchasedate'], 6, 2), substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['purchasedate'], 0, 4)); } $frame_offset += 8; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['seller'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'COMR') { // 4.24 COMR Commercial frame (ID3v2.3+ only) // There may be more than one 'commercial frame' in a tag, // but no two may be identical // <Header for 'Commercial frame', ID: 'COMR'> // Text encoding $xx // Price string <text string> $00 // Valid until <text string> // Contact URL <text string> $00 // Received as $xx // Name of seller <text string according to encoding> $00 (00) // Description <text string according to encoding> $00 (00) // Picture MIME type <string> $00 // Seller logo <binary data> $frame_offset = 0; $frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_pricestring = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); $frame_offset = $frame_terminatorpos + strlen(chr(0)); $frame_rawpricearray = explode('/', $frame_pricestring); foreach ($frame_rawpricearray as $key => $val) { $frame_currencyid = substr($val, 0, 3); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['price']["{$frame_currencyid}"]['currency'] = LookupCurrency($frame_currencyid, 'units'); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['price']["{$frame_currencyid}"]['value'] = substr($val, 3); } $frame_datestring = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 8); $frame_offset += 8; $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_contacturl = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); $frame_offset = $frame_terminatorpos + strlen(chr(0)); $frame_receivedasid = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset); if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) { $frame_terminatorpos++; // strpos() fooled because 2nd byte of Unicode chars are often 0x00 } $frame_sellername = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_sellername) === 0) { $frame_sellername = ''; } $frame_offset = $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset); if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) { $frame_terminatorpos++; // strpos() fooled because 2nd byte of Unicode chars are often 0x00 } $frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_description) === 0) { $frame_description = ''; } $frame_offset = $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)); $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_mimetype = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); $frame_offset = $frame_terminatorpos + strlen(chr(0)); $frame_sellerlogo = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['pricevaliduntil'] = $frame_datestring; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['contacturl'] = $frame_contacturl; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['receivedasid'] = $frame_receivedasid; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['receivedas'] = COMRReceivedAsLookup($frame_receivedasid); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['sellername'] = $frame_sellername; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciisellername'] = RoughTranslateUnicodeToASCII($frame_sellername, $frame_textencoding); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($frame_description, $frame_textencoding); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['mime'] = $frame_mimetype; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['logo'] = $frame_sellerlogo; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'ENCR') { // 4.25 ENCR Encryption method registration (ID3v2.3+ only) // There may be several 'ENCR' frames in a tag, // but only one containing the same symbol // and only one containing the same owner identifier // <Header for 'Encryption method registration', ID: 'ENCR'> // Owner identifier <text string> $00 // Method symbol $xx // Encryption data <binary data> $frame_offset = 0; $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_ownerid = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_ownerid) === 0) { $frame_ownerid = ''; } $frame_offset = $frame_terminatorpos + strlen(chr(0)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['ownerid'] = $frame_ownerid; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['methodsymbol'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'GRID') { // 4.26 GRID Group identification registration (ID3v2.3+ only) // There may be several 'GRID' frames in a tag, // but only one containing the same symbol // and only one containing the same owner identifier // <Header for 'Group ID registration', ID: 'GRID'> // Owner identifier <text string> $00 // Group symbol $xx // Group dependent data <binary data> $frame_offset = 0; $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_ownerid = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_ownerid) === 0) { $frame_ownerid = ''; } $frame_offset = $frame_terminatorpos + strlen(chr(0)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['ownerid'] = $frame_ownerid; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['groupsymbol'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'PRIV') { // 4.27 PRIV Private frame (ID3v2.3+ only) // The tag may contain more than one 'PRIV' frame // but only with different contents // <Header for 'Private frame', ID: 'PRIV'> // Owner identifier <text string> $00 // The private data <binary data> $frame_offset = 0; $frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset); $frame_ownerid = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset); if (ord($frame_ownerid) === 0) { $frame_ownerid = ''; } $frame_offset = $frame_terminatorpos + strlen(chr(0)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['ownerid'] = $frame_ownerid; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 4 && $frame_name == 'SIGN') { // 4.28 SIGN Signature frame (ID3v2.4+ only) // There may be more than one 'signature frame' in a tag, // but no two may be identical // <Header for 'Signature frame', ID: 'SIGN'> // Group symbol $xx // Signature <binary data> $frame_offset = 0; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['groupsymbol'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']; unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 4 && $frame_name == 'SEEK') { // 4.29 SEEK Seek frame (ID3v2.4+ only) // There may only be one 'seek frame' in a tag // <Header for 'Seek frame', ID: 'SEEK'> // Minimum offset to next tag $xx xx xx xx $frame_offset = 0; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 4 && $frame_name == 'ASPI') { // 4.30 ASPI Audio seek point index (ID3v2.4+ only) // There may only be one 'audio seek point index' frame in a tag // <Header for 'Seek Point Index', ID: 'ASPI'> // Indexed data start (S) $xx xx xx xx // Indexed data length (L) $xx xx xx xx // Number of index points (N) $xx xx // Bits per index point (b) $xx // Then for every index point the following data is included: // Fraction at index (Fi) $xx (xx) $frame_offset = 0; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datastart'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4)); $frame_offset += 4; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['indexeddatalength'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4)); $frame_offset += 4; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['indexpoints'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2)); $frame_offset += 2; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsperpoint'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1)); $frame_bytesperpoint = ceil($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsperpoint'] / 8); for ($i = 0; $i < $frame_indexpoints; $i++) { $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['indexes']["{$i}"] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesperpoint)); $frame_offset += $frame_bytesperpoint; } $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); } else { if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'RGAD') { // Replay Gain Adjustment // http://privatewww.essex.ac.uk/~djmrob/replaygain/file_format_id3v2.html // There may only be one 'RGAD' frame in a tag // <Header for 'Replay Gain Adjustment', ID: 'RGAD'> // Peak Amplitude $xx $xx $xx $xx // Radio Replay Gain Adjustment %aaabbbcd %dddddddd // Audiophile Replay Gain Adjustment %aaabbbcd %dddddddd // a - name code // b - originator code // c - sign bit // d - replay gain adjustment $frame_offset = 0; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakamplitude'] = BigEndian2Float(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4)); $frame_offset += 4; $radioadjustment = Dec2Bin(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2)); $frame_offset += 2; $audiophileadjustment = Dec2Bin(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2)); $frame_offset += 2; $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['name'] = Bin2Dec(substr($radioadjustment, 0, 3)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['originator'] = Bin2Dec(substr($radioadjustment, 3, 3)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['signbit'] = Bin2Dec(substr($radioadjustment, 6, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['adjustment'] = Bin2Dec(substr($radioadjustment, 7, 9)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['name'] = Bin2Dec(substr($audiophileadjustment, 0, 3)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['originator'] = Bin2Dec(substr($audiophileadjustment, 3, 3)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['signbit'] = Bin2Dec(substr($audiophileadjustment, 6, 1)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['adjustment'] = Bin2Dec(substr($audiophileadjustment, 7, 9)); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['radio']['name'] = RGADnameLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['name']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['radio']['originator'] = RGADoriginatorLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['originator']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['radio']['adjustment'] = RGADadjustmentLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['adjustment'], $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['signbit']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['audiophile']['name'] = RGADnameLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['name']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['audiophile']['originator'] = RGADoriginatorLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['originator']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['audiophile']['adjustment'] = RGADadjustmentLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['adjustment'], $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['signbit']); $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name); unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']); } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } return TRUE; }
function getRIFFHeaderFilepointer(&$fd, &$ThisFileInfo) { $Original['avdataoffset'] = $ThisFileInfo['avdataoffset']; $Original['avdataend'] = $ThisFileInfo['avdataend']; fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); $RIFFheader = fread($fd, 12); switch (substr($RIFFheader, 0, 4)) { case 'FORM': $ThisFileInfo['fileformat'] = 'aiff'; $RIFFheaderSize = EitherEndian2Int($ThisFileInfo, substr($RIFFheader, 4, 4)); $ThisFileInfo['RIFF'][substr($RIFFheader, 8, 4)] = ParseRIFF($fd, $ThisFileInfo['avdataoffset'] + 12, $ThisFileInfo['avdataoffset'] + $RIFFheaderSize, $ThisFileInfo); $ThisFileInfo['RIFF']['header_size'] = $RIFFheaderSize; break; case 'RIFF': case 'SDSS': // SDSS is identical to RIFF, just renamed. Used by SmartSound QuickTracks (www.smartsound.com) // SDSS is identical to RIFF, just renamed. Used by SmartSound QuickTracks (www.smartsound.com) case 'RMP3': // RMP3 is identical to RIFF, just renamed. Used by [unknown program] when creating RIFF-MP3s $RIFFtype = substr($RIFFheader, 8, 4); if ($RIFFtype == 'RMP3') { $RIFFtype == 'WAVE'; } $ThisFileInfo['fileformat'] = 'riff'; $RIFFheaderSize = EitherEndian2Int($ThisFileInfo, substr($RIFFheader, 4, 4)); $ThisFileInfo['RIFF']["{$RIFFtype}"] = ParseRIFF($fd, $ThisFileInfo['avdataoffset'] + 12, $ThisFileInfo['avdataoffset'] + $RIFFheaderSize, $ThisFileInfo); $ThisFileInfo['RIFF']['header_size'] = $RIFFheaderSize; break; default: $ThisFileInfo['error'] .= "\n" . 'Cannot parse RIFF (this is maybe not a RIFF / WAV / AVI file?)'; unset($ThisFileInfo['fileformat']); return false; break; } $streamindex = 0; $arraykeys = array_keys($ThisFileInfo['RIFF']); switch ($arraykeys[0]) { case 'WAVE': case 'RMP3': // RMP3 is identical to WAVE, just renamed. Used by [unknown program] when creating RIFF-MP3s if (empty($ThisFileInfo['audio']['bitrate_mode'])) { $ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; } if (empty($ThisFileInfo['audio']['dataformat'])) { $ThisFileInfo['audio']['dataformat'] = 'wav'; } if (isset($ThisFileInfo['RIFF'][$arraykeys[0]]['data'][0]['offset'])) { $ThisFileInfo['avdataoffset'] = $ThisFileInfo['RIFF'][$arraykeys[0]]['data'][0]['offset'] + 8; $ThisFileInfo['avdataend'] = $ThisFileInfo['avdataoffset'] + $ThisFileInfo['RIFF'][$arraykeys[0]]['data'][0]['size']; } if (isset($ThisFileInfo['RIFF']['WAVE']['fmt '][0]['data'])) { $ThisFileInfo['RIFF']['audio'][$streamindex] = RIFFparseWAVEFORMATex($ThisFileInfo['RIFF']['WAVE']['fmt '][0]['data']); if ($ThisFileInfo['RIFF']['audio'][$streamindex] == 0) { $ThisFileInfo['error'] .= 'Corrupt RIFF file: bitrate_audio == zero'; return false; } $ThisFileInfo['RIFF']['raw']['fmt '] = $ThisFileInfo['RIFF']['audio'][$streamindex]['raw']; unset($ThisFileInfo['RIFF']['audio'][$streamindex]['raw']); $ThisFileInfo['audio'] = array_merge_noclobber($ThisFileInfo['audio'], $ThisFileInfo['RIFF']['audio'][$streamindex]); if (substr($ThisFileInfo['audio']['codec'], 0, strlen('unknown: 0x')) == 'unknown: 0x') { $ThisFileInfo['warning'] .= "\n" . 'Audio codec = ' . $ThisFileInfo['audio']['codec']; } $ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['RIFF']['audio'][$streamindex]['bitrate']; if ($ThisFileInfo['audio']['bits_per_sample'] == 0) { unset($ThisFileInfo['audio']['bits_per_sample']); } $ThisFileInfo['playtime_seconds'] = (double) (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['audio']['bitrate']); if (isset($ThisFileInfo['RIFF']['WAVE']['data'][0]['offset']) && isset($ThisFileInfo['RIFF']['raw']['fmt ']['wFormatTag'])) { $ThisFileInfo['audio']['lossless'] = false; switch ($ThisFileInfo['RIFF']['raw']['fmt ']['wFormatTag']) { case 1: // PCM $ThisFileInfo['audio']['lossless'] = true; break; default: // do nothing break; } } } if (isset($ThisFileInfo['RIFF']['WAVE']['rgad'][0]['data'])) { require_once GETID3_INCLUDEPATH . 'getid3.rgad.php'; $rgadData = $ThisFileInfo['RIFF']['WAVE']['rgad'][0]['data']; $ThisFileInfo['RIFF']['raw']['rgad']['fPeakAmplitude'] = LittleEndian2Float(substr($rgadData, 0, 4)); $ThisFileInfo['RIFF']['raw']['rgad']['nRadioRgAdjust'] = EitherEndian2Int($ThisFileInfo, substr($rgadData, 4, 2)); $ThisFileInfo['RIFF']['raw']['rgad']['nAudiophileRgAdjust'] = EitherEndian2Int($ThisFileInfo, substr($rgadData, 6, 2)); $nRadioRgAdjustBitstring = str_pad(Dec2Bin($ThisFileInfo['RIFF']['raw']['rgad']['nRadioRgAdjust']), 16, '0', STR_PAD_LEFT); $nAudiophileRgAdjustBitstring = str_pad(Dec2Bin($ThisFileInfo['RIFF']['raw']['rgad']['nAudiophileRgAdjust']), 16, '0', STR_PAD_LEFT); $ThisFileInfo['RIFF']['raw']['rgad']['radio']['name'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 0, 3)); $ThisFileInfo['RIFF']['raw']['rgad']['radio']['originator'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 3, 3)); $ThisFileInfo['RIFF']['raw']['rgad']['radio']['signbit'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 6, 1)); $ThisFileInfo['RIFF']['raw']['rgad']['radio']['adjustment'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 7, 9)); $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['name'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 0, 3)); $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['originator'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 3, 3)); $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['signbit'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 6, 1)); $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['adjustment'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 7, 9)); $ThisFileInfo['RIFF']['rgad']['peakamplitude'] = $ThisFileInfo['RIFF']['raw']['rgad']['fPeakAmplitude']; if ($ThisFileInfo['RIFF']['raw']['rgad']['radio']['name'] != 0 && $ThisFileInfo['RIFF']['raw']['rgad']['radio']['originator'] != 0) { $ThisFileInfo['RIFF']['rgad']['radio']['name'] = RGADnameLookup($ThisFileInfo['RIFF']['raw']['rgad']['radio']['name']); $ThisFileInfo['RIFF']['rgad']['radio']['originator'] = RGADoriginatorLookup($ThisFileInfo['RIFF']['raw']['rgad']['radio']['originator']); $ThisFileInfo['RIFF']['rgad']['radio']['adjustment'] = RGADadjustmentLookup($ThisFileInfo['RIFF']['raw']['rgad']['radio']['adjustment'], $ThisFileInfo['RIFF']['raw']['rgad']['radio']['signbit']); } if ($ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['name'] != 0 && $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['originator'] != 0) { $ThisFileInfo['RIFF']['rgad']['audiophile']['name'] = RGADnameLookup($ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['name']); $ThisFileInfo['RIFF']['rgad']['audiophile']['originator'] = RGADoriginatorLookup($ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['originator']); $ThisFileInfo['RIFF']['rgad']['audiophile']['adjustment'] = RGADadjustmentLookup($ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['adjustment'], $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['signbit']); } } if (isset($ThisFileInfo['RIFF']['WAVE']['fact'][0]['data'])) { $ThisFileInfo['RIFF']['raw']['fact']['NumberOfSamples'] = EitherEndian2Int($ThisFileInfo, substr($ThisFileInfo['RIFF']['WAVE']['fact'][0]['data'], 0, 4)); if (isset($ThisFileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec']) && $ThisFileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec'] > 0) { $ThisFileInfo['playtime_seconds'] = (double) $ThisFileInfo['RIFF']['raw']['fact']['NumberOfSamples'] / $ThisFileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec']; } if (isset($ThisFileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec']) && $ThisFileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec']) { $ThisFileInfo['audio']['bitrate'] = CastAsInt($ThisFileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec'] * 8); } } if (isset($ThisFileInfo['RIFF']['WAVE']['bext'][0]['data'])) { $ThisFileInfo['RIFF']['WAVE']['bext'][0]['title'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['data'], 0, 256)); $ThisFileInfo['RIFF']['WAVE']['bext'][0]['author'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['data'], 256, 32)); $ThisFileInfo['RIFF']['WAVE']['bext'][0]['reference'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['data'], 288, 32)); $ThisFileInfo['RIFF']['WAVE']['bext'][0]['origin_date'] = substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['data'], 320, 10); $ThisFileInfo['RIFF']['WAVE']['bext'][0]['origin_time'] = substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['data'], 330, 8); $ThisFileInfo['RIFF']['WAVE']['bext'][0]['time_reference'] = LittleEndian2Int(substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['data'], 338, 8)); $ThisFileInfo['RIFF']['WAVE']['bext'][0]['bwf_version'] = LittleEndian2Int(substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['data'], 346, 1)); $ThisFileInfo['RIFF']['WAVE']['bext'][0]['reserved'] = LittleEndian2Int(substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['data'], 347, 254)); $ThisFileInfo['RIFF']['WAVE']['bext'][0]['coding_history'] = explode("\r\n", trim(substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['data'], 601))); $ThisFileInfo['RIFF']['WAVE']['bext'][0]['origin_date_unix'] = mktime(substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['origin_time'], 0, 2), substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['origin_time'], 3, 2), substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['origin_time'], 6, 2), substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['origin_date'], 5, 2), substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['origin_date'], 8, 2), substr($ThisFileInfo['RIFF']['WAVE']['bext'][0]['origin_date'], 0, 4)); $ThisFileInfo['RIFF']['comments']['author'][] = $ThisFileInfo['RIFF']['WAVE']['bext'][0]['author']; $ThisFileInfo['RIFF']['comments']['title'][] = $ThisFileInfo['RIFF']['WAVE']['bext'][0]['title']; } if (isset($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['data'])) { $ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['raw']['sound_information'] = LittleEndian2Int(substr($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['data'], 0, 2)); $ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['flags']['homogenous'] = (bool) ($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['raw']['sound_information'] & 0x1); if ($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['flags']['homogenous']) { $ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['flags']['padding'] = InverseBoolean($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['raw']['sound_information'] & 0x2); $ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['flags']['22_or_44'] = (bool) ($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['raw']['sound_information'] & 0x4); $ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['flags']['free_format'] = (bool) ($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['raw']['sound_information'] & 0x8); $ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['nominal_frame_size'] = LittleEndian2Int(substr($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['data'], 2, 2)); } $ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['anciliary_data_length'] = LittleEndian2Int(substr($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['data'], 6, 2)); $ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['raw']['anciliary_data_def'] = LittleEndian2Int(substr($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['data'], 8, 2)); $ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['flags']['anciliary_data_left'] = (bool) ($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['raw']['anciliary_data_def'] & 0x1); $ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['flags']['anciliary_data_free'] = (bool) ($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['raw']['anciliary_data_def'] & 0x2); $ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['flags']['anciliary_data_right'] = (bool) ($ThisFileInfo['RIFF']['WAVE']['MEXT'][0]['raw']['anciliary_data_def'] & 0x4); } if (isset($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'])) { $ThisFileInfo['RIFF']['WAVE']['cart'][0]['version'] = substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 0, 4); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['title'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 4, 64)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['artist'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 68, 64)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['cut_id'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 132, 64)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['client_id'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 196, 64)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['category'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 260, 64)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['classification'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 324, 64)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['out_cue'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 388, 64)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['start_date'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 452, 10)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['start_time'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 462, 8)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['end_date'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 470, 10)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['end_time'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 480, 8)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['producer_app_id'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 488, 64)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['producer_app_version'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 552, 64)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['user_defined_text'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 616, 64)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['zero_db_reference'] = LittleEndian2Int(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 680, 4), true); for ($i = 0; $i < 8; $i++) { $ThisFileInfo['RIFF']['WAVE']['cart'][0]['post_time'][$i]['usage_fourcc'] = substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 684 + $i * 8, 4); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['post_time'][$i]['timer_value'] = LittleEndian2Int(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 684 + $i * 8 + 4, 4)); } $ThisFileInfo['RIFF']['WAVE']['cart'][0]['url'] = trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 748, 1024)); $ThisFileInfo['RIFF']['WAVE']['cart'][0]['tag_text'] = explode("\r\n", trim(substr($ThisFileInfo['RIFF']['WAVE']['cart'][0]['data'], 1772))); $ThisFileInfo['RIFF']['comments']['artist'][] = $ThisFileInfo['RIFF']['WAVE']['cart'][0]['artist']; $ThisFileInfo['RIFF']['comments']['title'][] = $ThisFileInfo['RIFF']['WAVE']['cart'][0]['title']; } if (!isset($ThisFileInfo['audio']['bitrate']) && isset($ThisFileInfo['RIFF']['audio'][$streamindex]['bitrate'])) { $ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['RIFF']['audio'][$streamindex]['bitrate']; $ThisFileInfo['playtime_seconds'] = (double) (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['audio']['bitrate']); } if (!empty($ThisFileInfo['wavpack'])) { $ThisFileInfo['audio']['dataformat'] = 'wavpack'; $ThisFileInfo['audio']['bitrate_mode'] = 'vbr'; $ThisFileInfo['audio']['encoder'] = 'WavPack v' . $ThisFileInfo['wavpack']['version']; // Reset to the way it was - RIFF parsing will have messed this up $ThisFileInfo['avdataend'] = $Original['avdataend']; $ThisFileInfo['audio']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['playtime_seconds']; fseek($fd, $ThisFileInfo['avdataoffset'] - 44, SEEK_SET); $RIFFdata = fread($fd, 44); $OrignalRIFFheaderSize = LittleEndian2Int(substr($RIFFdata, 4, 4)) + 8; $OrignalRIFFdataSize = LittleEndian2Int(substr($RIFFdata, 40, 4)) + 44; if ($OrignalRIFFheaderSize > $OrignalRIFFdataSize) { $ThisFileInfo['avdataend'] -= $OrignalRIFFheaderSize - $OrignalRIFFdataSize; fseek($fd, $ThisFileInfo['avdataend'], SEEK_SET); $RIFFdata .= fread($fd, $OrignalRIFFheaderSize - $OrignalRIFFdataSize); } // move the data chunk after all other chunks (if any) // so that the RIFF parser doesn't see EOF when trying // to skip over the data chunk $RIFFdata = substr($RIFFdata, 0, 36) . substr($RIFFdata, 44) . substr($RIFFdata, 36, 8); ParseRIFFdata($RIFFdata, $ThisFileInfo); } break; case 'AVI ': $ThisFileInfo['video']['bitrate_mode'] = 'cbr'; $ThisFileInfo['video']['dataformat'] = 'avi'; $ThisFileInfo['mime_type'] = 'video/avi'; if (isset($ThisFileInfo['RIFF'][$arraykeys[0]]['movi']['offset'])) { $ThisFileInfo['avdataoffset'] = $ThisFileInfo['RIFF'][$arraykeys[0]]['movi']['offset'] + 8; $ThisFileInfo['avdataend'] = $ThisFileInfo['avdataoffset'] + $ThisFileInfo['RIFF'][$arraykeys[0]]['movi']['size']; } if (isset($ThisFileInfo['RIFF']['AVI ']['hdrl']['avih'][$streamindex]['data'])) { $avihData = $ThisFileInfo['RIFF']['AVI ']['hdrl']['avih'][$streamindex]['data']; $ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 0, 4)); // frame display rate (or 0L) if ($ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'] == 0) { $ThisFileInfo['error'] .= 'Corrupt RIFF file: avih.dwMicroSecPerFrame == zero'; return false; } $ThisFileInfo['RIFF']['raw']['avih']['dwMaxBytesPerSec'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 4, 4)); // max. transfer rate $ThisFileInfo['RIFF']['raw']['avih']['dwPaddingGranularity'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 8, 4)); // pad to multiples of this size; normally 2K. $ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 12, 4)); // the ever-present flags $ThisFileInfo['RIFF']['raw']['avih']['dwTotalFrames'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 16, 4)); // # frames in file $ThisFileInfo['RIFF']['raw']['avih']['dwInitialFrames'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 20, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwStreams'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 24, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwSuggestedBufferSize'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 28, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwWidth'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 32, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwHeight'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 36, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwScale'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 40, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwRate'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 44, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwStart'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 48, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwLength'] = EitherEndian2Int($ThisFileInfo, substr($avihData, 52, 4)); $ThisFileInfo['RIFF']['raw']['avih']['flags']['hasindex'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x10); $ThisFileInfo['RIFF']['raw']['avih']['flags']['mustuseindex'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x20); $ThisFileInfo['RIFF']['raw']['avih']['flags']['interleaved'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x100); $ThisFileInfo['RIFF']['raw']['avih']['flags']['trustcktype'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x800); $ThisFileInfo['RIFF']['raw']['avih']['flags']['capturedfile'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x10000); $ThisFileInfo['RIFF']['raw']['avih']['flags']['copyrighted'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x20010); if ($ThisFileInfo['RIFF']['raw']['avih']['dwWidth'] > 0) { $ThisFileInfo['RIFF']['video'][$streamindex]['frame_width'] = $ThisFileInfo['RIFF']['raw']['avih']['dwWidth']; $ThisFileInfo['video']['resolution_x'] = $ThisFileInfo['RIFF']['video'][$streamindex]['frame_width']; } if ($ThisFileInfo['RIFF']['raw']['avih']['dwHeight'] > 0) { $ThisFileInfo['RIFF']['video'][$streamindex]['frame_height'] = $ThisFileInfo['RIFF']['raw']['avih']['dwHeight']; $ThisFileInfo['video']['resolution_y'] = $ThisFileInfo['RIFF']['video'][$streamindex]['frame_height']; } $ThisFileInfo['RIFF']['video'][$streamindex]['frame_rate'] = round(1000000 / $ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'], 3); $ThisFileInfo['video']['frame_rate'] = $ThisFileInfo['RIFF']['video'][$streamindex]['frame_rate']; } if (isset($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'][0]['data'])) { if (is_array($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'])) { for ($i = 0; $i < count($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh']); $i++) { if (isset($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'][$i]['data'])) { $strhData = $ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'][$i]['data']; $strhfccType = substr($strhData, 0, 4); if (isset($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strf'][$i]['data'])) { $strfData = $ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strf'][$i]['data']; switch ($strhfccType) { case 'auds': $ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; $ThisFileInfo['audio']['dataformat'] = 'wav'; if (isset($ThisFileInfo['RIFF']['audio']) && is_array($ThisFileInfo['RIFF']['audio'])) { $streamindex = count($ThisFileInfo['RIFF']['audio']); } $ThisFileInfo['RIFF']['audio'][$streamindex] = RIFFparseWAVEFORMATex($strfData); $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex] = $ThisFileInfo['RIFF']['audio'][$streamindex]['raw']; unset($ThisFileInfo['RIFF']['audio'][$streamindex]['raw']); $ThisFileInfo['audio'] = array_merge_noclobber($ThisFileInfo['audio'], $ThisFileInfo['RIFF']['audio'][$streamindex]); $ThisFileInfo['audio']['lossless'] = false; switch ($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['wFormatTag']) { case 1: // PCM $ThisFileInfo['audio']['lossless'] = true; break; case 85: // MPEG Layer 3 $ThisFileInfo['audio']['dataformat'] = 'mp3'; break; case 8192: // AC-3 $ThisFileInfo['audio']['dataformat'] = 'ac3'; break; default: $ThisFileInfo['audio']['dataformat'] = 'wav'; break; } break; case 'iavs': case 'vids': $ThisFileInfo['RIFF']['raw']['strh'][$i]['fccType'] = substr($strhData, 0, 4); // same as $strhfccType; $ThisFileInfo['RIFF']['raw']['strh'][$i]['fccHandler'] = substr($strhData, 4, 4); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwFlags'] = EitherEndian2Int($ThisFileInfo, substr($strhData, 8, 4)); // Contains AVITF_* flags $ThisFileInfo['RIFF']['raw']['strh'][$i]['wPriority'] = EitherEndian2Int($ThisFileInfo, substr($strhData, 12, 2)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['wLanguage'] = EitherEndian2Int($ThisFileInfo, substr($strhData, 14, 2)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwInitialFrames'] = EitherEndian2Int($ThisFileInfo, substr($strhData, 16, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwScale'] = EitherEndian2Int($ThisFileInfo, substr($strhData, 20, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwRate'] = EitherEndian2Int($ThisFileInfo, substr($strhData, 24, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwStart'] = EitherEndian2Int($ThisFileInfo, substr($strhData, 28, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwLength'] = EitherEndian2Int($ThisFileInfo, substr($strhData, 32, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwSuggestedBufferSize'] = EitherEndian2Int($ThisFileInfo, substr($strhData, 36, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwQuality'] = EitherEndian2Int($ThisFileInfo, substr($strhData, 40, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwSampleSize'] = EitherEndian2Int($ThisFileInfo, substr($strhData, 44, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['rcFrame'] = EitherEndian2Int($ThisFileInfo, substr($strhData, 48, 4)); $ThisFileInfo['RIFF']['video'][$streamindex]['codec'] = RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strh'][$i]['fccHandler']); if (!$ThisFileInfo['RIFF']['video'][$streamindex]['codec'] && isset($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']) && RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc'])) { $ThisFileInfo['RIFF']['video'][$streamindex]['codec'] = RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']); } $ThisFileInfo['video']['codec'] = $ThisFileInfo['RIFF']['video'][$streamindex]['codec']; switch ($ThisFileInfo['RIFF']['raw']['strh'][$i]['fccHandler']) { case 'HFYU': // Huffman Lossless Codec // Huffman Lossless Codec case 'IRAW': // Intel YUV Uncompressed // Intel YUV Uncompressed case 'YUY2': // Uncompressed YUV 4:2:2 $ThisFileInfo['video']['lossless'] = true; break; default: $ThisFileInfo['video']['lossless'] = false; break; } switch ($strhfccType) { case 'vids': $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biSize'] = EitherEndian2Int($ThisFileInfo, substr($strfData, 0, 4)); // number of bytes required by the BITMAPINFOHEADER structure $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biWidth'] = EitherEndian2Int($ThisFileInfo, substr($strfData, 4, 4)); // width of the bitmap in pixels $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biHeight'] = EitherEndian2Int($ThisFileInfo, substr($strfData, 8, 4)); // height of the bitmap in pixels. If biHeight is positive, the bitmap is a 'bottom-up' DIB and its origin is the lower left corner. If biHeight is negative, the bitmap is a 'top-down' DIB and its origin is the upper left corner $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biPlanes'] = EitherEndian2Int($ThisFileInfo, substr($strfData, 12, 2)); // number of color planes on the target device. In most cases this value must be set to 1 $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biBitCount'] = EitherEndian2Int($ThisFileInfo, substr($strfData, 14, 2)); // Specifies the number of bits per pixels $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc'] = substr($strfData, 16, 4); // $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biSizeImage'] = EitherEndian2Int($ThisFileInfo, substr($strfData, 20, 4)); // size of the bitmap data section of the image (the actual pixel data, excluding BITMAPINFOHEADER and RGBQUAD structures) $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biXPelsPerMeter'] = EitherEndian2Int($ThisFileInfo, substr($strfData, 24, 4)); // horizontal resolution, in pixels per metre, of the target device $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biYPelsPerMeter'] = EitherEndian2Int($ThisFileInfo, substr($strfData, 28, 4)); // vertical resolution, in pixels per metre, of the target device $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biClrUsed'] = EitherEndian2Int($ThisFileInfo, substr($strfData, 32, 4)); // actual number of color indices in the color table used by the bitmap. If this value is zero, the bitmap uses the maximum number of colors corresponding to the value of the biBitCount member for the compression mode specified by biCompression $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biClrImportant'] = EitherEndian2Int($ThisFileInfo, substr($strfData, 36, 4)); // number of color indices that are considered important for displaying the bitmap. If this value is zero, all colors are important $ThisFileInfo['video']['bits_per_sample'] = $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biBitCount']; if ($ThisFileInfo['RIFF']['video'][$streamindex]['codec'] == 'DV') { $ThisFileInfo['RIFF']['video'][$streamindex]['dv_type'] = 2; } break; case 'iavs': $ThisFileInfo['RIFF']['video'][$streamindex]['dv_type'] = 1; break; } break; default: $ThisFileInfo['warning'] .= "\n" . 'Unhandled fccType for stream (' . $i . '): "' . $strhfccType . '"'; break; } } } if (isset($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']) && RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc'])) { $ThisFileInfo['RIFF']['video'][$streamindex]['codec'] = RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']); $ThisFileInfo['video']['codec'] = $ThisFileInfo['RIFF']['video'][$streamindex]['codec']; switch ($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']) { case 'HFYU': // Huffman Lossless Codec // Huffman Lossless Codec case 'IRAW': // Intel YUV Uncompressed // Intel YUV Uncompressed case 'YUY2': // Uncompressed YUV 4:2:2 $ThisFileInfo['video']['lossless'] = true; $ThisFileInfo['video']['bits_per_sample'] = 24; break; default: $ThisFileInfo['video']['lossless'] = false; $ThisFileInfo['video']['bits_per_sample'] = 24; break; } } } } } break; case 'CDDA': $ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; $ThisFileInfo['audio']['dataformat'] = 'cda'; $ThisFileInfo['audio']['lossless'] = true; unset($ThisFileInfo['mime_type']); $ThisFileInfo['avdataoffset'] = 44; if (isset($ThisFileInfo['RIFF']['CDDA']['fmt '][0]['data'])) { $fmtData = $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['data']; $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['unknown1'] = EitherEndian2Int($ThisFileInfo, substr($fmtData, 0, 2)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['track_num'] = EitherEndian2Int($ThisFileInfo, substr($fmtData, 2, 2)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['disc_id'] = EitherEndian2Int($ThisFileInfo, substr($fmtData, 4, 4)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['start_offset_frame'] = EitherEndian2Int($ThisFileInfo, substr($fmtData, 8, 4)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['playtime_frames'] = EitherEndian2Int($ThisFileInfo, substr($fmtData, 12, 4)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['unknown6'] = EitherEndian2Int($ThisFileInfo, substr($fmtData, 16, 4)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['unknown7'] = EitherEndian2Int($ThisFileInfo, substr($fmtData, 20, 4)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['start_offset_seconds'] = (double) $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['start_offset_frame'] / 75; $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['playtime_seconds'] = (double) $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['playtime_frames'] / 75; $ThisFileInfo['comments']['track'] = $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['track_num']; $ThisFileInfo['playtime_seconds'] = $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['playtime_seconds']; // hardcoded data for CD-audio $ThisFileInfo['audio']['sample_rate'] = 44100; $ThisFileInfo['audio']['channels'] = 2; $ThisFileInfo['audio']['bits_per_sample'] = 16; $ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['audio']['sample_rate'] * $ThisFileInfo['audio']['channels'] * $ThisFileInfo['audio']['bits_per_sample']; $ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; } break; case 'AIFF': case 'AIFC': $ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; $ThisFileInfo['audio']['dataformat'] = 'aiff'; $ThisFileInfo['audio']['lossless'] = true; $ThisFileInfo['mime_type'] = 'audio/x-aiff'; if (isset($ThisFileInfo['RIFF'][$arraykeys[0]]['SSND'][0]['offset'])) { $ThisFileInfo['avdataoffset'] = $ThisFileInfo['RIFF'][$arraykeys[0]]['SSND'][0]['offset'] + 8; $ThisFileInfo['avdataend'] = $ThisFileInfo['avdataoffset'] + $ThisFileInfo['RIFF'][$arraykeys[0]]['SSND'][0]['size']; if ($ThisFileInfo['avdataend'] > $ThisFileInfo['filesize']) { if ($ThisFileInfo['avdataend'] == $ThisFileInfo['filesize'] + 1 && $ThisFileInfo['filesize'] % 2 == 1) { // structures rounded to 2-byte boundary, but dumb encoders // forget to pad end of file to make this actually work } else { $ThisFileInfo['warning'] .= "\n" . 'Probable truncated AIFF file: expecting ' . $ThisFileInfo['RIFF'][$arraykeys[0]]['SSND'][0]['size'] . ' bytes of audio data, only ' . ($ThisFileInfo['filesize'] - $ThisFileInfo['avdataoffset']) . ' bytes found'; } $ThisFileInfo['avdataend'] = $ThisFileInfo['filesize']; } } if (isset($ThisFileInfo['RIFF'][$arraykeys[0]]['COMM'][0]['data'])) { $ThisFileInfo['RIFF']['audio']['channels'] = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['COMM'][0]['data'], 0, 2), true); $ThisFileInfo['RIFF']['audio']['total_samples'] = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['COMM'][0]['data'], 2, 4), false); $ThisFileInfo['RIFF']['audio']['bits_per_sample'] = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['COMM'][0]['data'], 6, 2), true); $ThisFileInfo['RIFF']['audio']['sample_rate'] = (int) BigEndian2Float(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['COMM'][0]['data'], 8, 10)); if ($ThisFileInfo['RIFF'][$arraykeys[0]]['COMM'][0]['size'] > 18) { $ThisFileInfo['RIFF']['audio']['codec_fourcc'] = substr($ThisFileInfo['RIFF'][$arraykeys[0]]['COMM'][0]['data'], 18, 4); $CodecNameSize = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['COMM'][0]['data'], 22, 1), false); $ThisFileInfo['RIFF']['audio']['codec_name'] = substr($ThisFileInfo['RIFF'][$arraykeys[0]]['COMM'][0]['data'], 23, $CodecNameSize); if ($ThisFileInfo['RIFF']['audio']['codec_name'] == 'NONE') { $ThisFileInfo['audio']['codec'] = 'Pulse Code Modulation (PCM)'; $ThisFileInfo['audio']['lossless'] = true; } else { $ThisFileInfo['audio']['codec'] = $ThisFileInfo['RIFF']['audio']['codec_name']; $ThisFileInfo['audio']['lossless'] = false; } } $ThisFileInfo['audio']['channels'] = $ThisFileInfo['RIFF']['audio']['channels']; if ($ThisFileInfo['RIFF']['audio']['bits_per_sample'] > 0) { $ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['RIFF']['audio']['bits_per_sample']; } $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['RIFF']['audio']['sample_rate']; if ($ThisFileInfo['audio']['sample_rate'] == 0) { $ThisFileInfo['error'] .= "\n" . 'Corrupted AIFF file: sample_rate == zero'; return false; } $ThisFileInfo['playtime_seconds'] = $ThisFileInfo['RIFF']['audio']['total_samples'] / $ThisFileInfo['audio']['sample_rate']; } if (isset($ThisFileInfo['RIFF'][$arraykeys[0]]['COMT'])) { $offset = 0; $CommentCount = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['COMT'][0]['data'], $offset, 2), false); $offset += 2; for ($i = 0; $i < $CommentCount; $i++) { $ThisFileInfo['comments_raw'][$i]['timestamp'] = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['COMT'][0]['data'], $offset, 4), false); $offset += 4; $ThisFileInfo['comments_raw'][$i]['marker_id'] = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['COMT'][0]['data'], $offset, 2), true); $offset += 2; $CommentLength = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['COMT'][0]['data'], $offset, 2), false); $offset += 2; $ThisFileInfo['comments_raw'][$i]['comment'] = substr($ThisFileInfo['RIFF'][$arraykeys[0]]['COMT'][0]['data'], $offset, $CommentLength); $offset += $CommentLength; $ThisFileInfo['comments_raw'][$i]['timestamp_unix'] = DateMac2Unix($ThisFileInfo['comments_raw'][$i]['timestamp']); $ThisFileInfo['RIFF']['comments']['comment'][] = $ThisFileInfo['comments_raw'][$i]['comment']; } } $CommentsChunkNames = array('NAME' => 'title', 'author' => 'artist', '(c) ' => 'copyright', 'ANNO' => 'comment'); foreach ($CommentsChunkNames as $key => $value) { if (isset($ThisFileInfo['RIFF'][$arraykeys[0]][$key][0]['data'])) { $ThisFileInfo['RIFF']['comments'][$value][] = $ThisFileInfo['RIFF'][$arraykeys[0]][$key][0]['data']; } } if (isset($ThisFileInfo['RIFF']['comments'])) { CopyFormatCommentsToRootComments($ThisFileInfo['RIFF']['comments'], $ThisFileInfo, true, true, true); } break; case '8SVX': $ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; $ThisFileInfo['audio']['dataformat'] = '8svx'; $ThisFileInfo['audio']['bits_per_sample'] = 8; $ThisFileInfo['audio']['channels'] = 1; // overridden below, if need be $ThisFileInfo['mime_type'] = 'audio/x-aiff'; if (isset($ThisFileInfo['RIFF'][$arraykeys[0]]['BODY'][0]['offset'])) { $ThisFileInfo['avdataoffset'] = $ThisFileInfo['RIFF'][$arraykeys[0]]['BODY'][0]['offset'] + 8; $ThisFileInfo['avdataend'] = $ThisFileInfo['avdataoffset'] + $ThisFileInfo['RIFF'][$arraykeys[0]]['BODY'][0]['size']; if ($ThisFileInfo['avdataend'] > $ThisFileInfo['filesize']) { $ThisFileInfo['warning'] .= "\n" . 'Probable truncated AIFF file: expecting ' . $ThisFileInfo['RIFF'][$arraykeys[0]]['BODY'][0]['size'] . ' bytes of audio data, only ' . ($ThisFileInfo['filesize'] - $ThisFileInfo['avdataoffset']) . ' bytes found'; } } if (isset($ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['offset'])) { $ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['oneShotHiSamples'] = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['data'], 0, 4)); $ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['repeatHiSamples'] = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['data'], 4, 4)); $ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['samplesPerHiCycle'] = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['data'], 8, 4)); $ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['samplesPerSec'] = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['data'], 12, 2)); $ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['ctOctave'] = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['data'], 14, 1)); $ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['sCompression'] = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['data'], 15, 1)); $ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['Volume'] = FixedPoint16_16(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['data'], 16, 4)); $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['samplesPerSec']; switch ($ThisFileInfo['RIFF'][$arraykeys[0]]['VHDR'][0]['sCompression']) { case 0: $ThisFileInfo['audio']['codec'] = 'Pulse Code Modulation (PCM)'; $ThisFileInfo['audio']['lossless'] = true; $ActualBitsPerSample = 8; break; case 1: $ThisFileInfo['audio']['codec'] = 'Fibonacci-delta encoding'; $ThisFileInfo['audio']['lossless'] = false; $ActualBitsPerSample = 4; break; default: $ThisFileInfo['warning'] .= "\n" . 'Unexpected sCompression value in 8SVX.VHDR chunk - expecting 0 or 1, found "' . sCompression . '"'; break; } } if (isset($ThisFileInfo['RIFF'][$arraykeys[0]]['CHAN'][0]['data'])) { $ChannelsIndex = BigEndian2Int(substr($ThisFileInfo['RIFF'][$arraykeys[0]]['CHAN'][0]['data'], 0, 4)); switch ($ChannelsIndex) { case 6: // Stereo $ThisFileInfo['audio']['channels'] = 2; break; case 2: // Left channel only // Left channel only case 4: // Right channel only $ThisFileInfo['audio']['channels'] = 1; break; default: $ThisFileInfo['warning'] .= "\n" . 'Unexpected value in 8SVX.CHAN chunk - expecting 2 or 4 or 6, found "' . $ChannelsIndex . '"'; break; } } $CommentsChunkNames = array('NAME' => 'title', 'author' => 'artist', '(c) ' => 'copyright', 'ANNO' => 'comment'); foreach ($CommentsChunkNames as $key => $value) { if (isset($ThisFileInfo['RIFF'][$arraykeys[0]][$key][0]['data'])) { $ThisFileInfo['RIFF']['comments'][$value][] = $ThisFileInfo['RIFF'][$arraykeys[0]][$key][0]['data']; } } if (isset($ThisFileInfo['RIFF']['comments'])) { CopyFormatCommentsToRootComments($ThisFileInfo['RIFF']['comments'], $ThisFileInfo, true, true, true); } $ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['audio']['sample_rate'] * $ActualBitsPerSample * $ThisFileInfo['audio']['channels']; if (!empty($ThisFileInfo['audio']['bitrate'])) { $ThisFileInfo['playtime_seconds'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / ($ThisFileInfo['audio']['bitrate'] / 8); } break; default: $ThisFileInfo['error'] .= "\n" . 'Unknown RIFF type: expecting one of (WAVE|RMP3|AVI |CDDA|AIFF|AIFC|8SVX|), found "' . $arraykeys[0] . '" instead'; unset($ThisFileInfo['fileformat']); break; } if (isset($ThisFileInfo['RIFF']['WAVE']['DISP']) && is_array($ThisFileInfo['RIFF']['WAVE']['DISP'])) { $ThisFileInfo['tags'][] = 'riff'; $ThisFileInfo['RIFF']['comments']['title'][] = trim(substr($ThisFileInfo['RIFF']['WAVE']['DISP'][count($ThisFileInfo['RIFF']['WAVE']['DISP']) - 1]['data'], 4)); } if (isset($ThisFileInfo['RIFF']['WAVE']['INFO']) && is_array($ThisFileInfo['RIFF']['WAVE']['INFO'])) { $ThisFileInfo['tags'][] = 'riff'; $RIFFinfoKeyLookup = array('IART' => 'artist', 'IGNR' => 'genre', 'ICMT' => 'comment', 'ICOP' => 'copyright', 'IENG' => 'engineers', 'IKEY' => 'keywords', 'IMED' => 'orignalmedium', 'INAM' => 'name', 'ISRC' => 'sourcesupplier', 'ITCH' => 'digitizer', 'ISBJ' => 'subject', 'ISRF' => 'digitizationsource', 'ISFT' => 'encoded_by'); foreach ($RIFFinfoKeyLookup as $key => $value) { if (isset($ThisFileInfo['RIFF']['WAVE']['INFO']["{$key}"])) { foreach ($ThisFileInfo['RIFF']['WAVE']['INFO']["{$key}"] as $commentid => $commentdata) { if (trim($commentdata['data']) != '') { $ThisFileInfo['RIFF']['comments']["{$value}"][] = trim($commentdata['data']); } } } } } if (!empty($ThisFileInfo['RIFF']['comments'])) { CopyFormatCommentsToRootComments($ThisFileInfo['RIFF']['comments'], $ThisFileInfo, true, false, true); } if (empty($ThisFileInfo['audio']['encoder']) && !empty($ThisFileInfo['mpeg']['audio']['LAME']['short_version'])) { $ThisFileInfo['audio']['encoder'] = $ThisFileInfo['mpeg']['audio']['LAME']['short_version']; } if (!isset($ThisFileInfo['playtime_seconds'])) { $ThisFileInfo['playtime_seconds'] = 0; } if (isset($ThisFileInfo['RIFF']['raw']['avih']['dwTotalFrames']) && isset($ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'])) { $ThisFileInfo['playtime_seconds'] = $ThisFileInfo['RIFF']['raw']['avih']['dwTotalFrames'] * ($ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'] / 1000000); } if ($ThisFileInfo['playtime_seconds'] > 0) { if (isset($ThisFileInfo['RIFF']['audio']) && isset($ThisFileInfo['RIFF']['video'])) { if (!isset($ThisFileInfo['bitrate'])) { $ThisFileInfo['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'] * 8; } } elseif (isset($ThisFileInfo['RIFF']['audio']) && !isset($ThisFileInfo['RIFF']['video'])) { if (!isset($ThisFileInfo['audio']['bitrate'])) { $ThisFileInfo['audio']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'] * 8; } } elseif (!isset($ThisFileInfo['RIFF']['audio']) && isset($ThisFileInfo['RIFF']['video'])) { if (!isset($ThisFileInfo['video']['bitrate'])) { $ThisFileInfo['video']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'] * 8; } } } if (isset($ThisFileInfo['RIFF']['video']) && isset($ThisFileInfo['audio']['bitrate']) && $ThisFileInfo['audio']['bitrate'] > 0 && $ThisFileInfo['playtime_seconds'] > 0) { $ThisFileInfo['audio']['bitrate'] = 0; $ThisFileInfo['video']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'] * 8; foreach ($ThisFileInfo['RIFF']['audio'] as $channelnumber => $audioinfoarray) { $ThisFileInfo['video']['bitrate'] -= $audioinfoarray['bitrate']; $ThisFileInfo['audio']['bitrate'] += $audioinfoarray['bitrate']; } if ($ThisFileInfo['video']['bitrate'] <= 0) { unset($ThisFileInfo['video']['bitrate']); } if ($ThisFileInfo['audio']['bitrate'] <= 0) { unset($ThisFileInfo['audio']['bitrate']); } } if (!empty($ThisFileInfo['RIFF']['raw']['fmt ']['nBitsPerSample']) && $ThisFileInfo['RIFF']['raw']['fmt ']['nBitsPerSample'] > 0) { $ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['RIFF']['raw']['fmt ']['nBitsPerSample']; } return true; }
function getRIFFHeaderFilepointer(&$fd, &$MP3fileInfo) { $offset = 0; rewind($fd); $MP3fileInfo['RIFF'] = ParseRIFF($fd, $offset, $MP3fileInfo['filesize']); $streamindex = 0; if (!is_array($MP3fileInfo['RIFF'])) { $MP3fileInfo['error'] .= "\n" . 'Cannot parse RIFF (this is maybe not a RIFF / WAV / AVI file?)'; unset($MP3fileInfo['RIFF']); unset($MP3fileInfo['fileformat']); return FALSE; } $arraykeys = array_keys($MP3fileInfo['RIFF']); switch ($arraykeys[0]) { case 'WAVE': $MP3fileInfo['fileformat'] = 'wav'; if (isset($MP3fileInfo['RIFF']['WAVE']['fmt '][0]['data'])) { $fmtData = $MP3fileInfo['RIFF']['WAVE']['fmt '][0]['data']; $MP3fileInfo['RIFF']['raw']['fmt ']['wFormatTag'] = LittleEndian2Int(substr($fmtData, 0, 2)); $MP3fileInfo['RIFF']['raw']['fmt ']['nChannels'] = LittleEndian2Int(substr($fmtData, 2, 2)); $MP3fileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec'] = LittleEndian2Int(substr($fmtData, 4, 4)); $MP3fileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec'] = LittleEndian2Int(substr($fmtData, 8, 4)); $MP3fileInfo['RIFF']['raw']['fmt ']['nBlockAlign'] = LittleEndian2Int(substr($fmtData, 12, 2)); $MP3fileInfo['RIFF']['raw']['fmt ']['nBitsPerSample'] = LittleEndian2Int(substr($fmtData, 14, 2)); $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['format'] = RIFFwFormatTagLookup($MP3fileInfo['RIFF']['raw']['fmt ']['wFormatTag']); $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['channels'] = $MP3fileInfo['RIFF']['raw']['fmt ']['nChannels']; $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['channelmode'] = $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['channels'] == 1 ? 'mono' : 'stereo'; $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['frequency'] = $MP3fileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec']; $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['bitrate'] = $MP3fileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec'] * 8; $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['bitspersample'] = $MP3fileInfo['RIFF']['raw']['fmt ']['nBitsPerSample']; } if (isset($MP3fileInfo['RIFF']['WAVE']['rgad'][0]['data'])) { $rgadData = $MP3fileInfo['RIFF']['WAVE']['rgad'][0]['data']; $MP3fileInfo['RIFF']['raw']['rgad']['fPeakAmplitude'] = LittleEndian2Float(substr($rgadData, 0, 4)); $MP3fileInfo['RIFF']['raw']['rgad']['nRadioRgAdjust'] = LittleEndian2Int(substr($rgadData, 4, 2)); $MP3fileInfo['RIFF']['raw']['rgad']['nAudiophileRgAdjust'] = LittleEndian2Int(substr($rgadData, 6, 2)); $nRadioRgAdjustBitstring = str_pad(Dec2Bin($MP3fileInfo['RIFF']['raw']['rgad']['nRadioRgAdjust']), 16, '0', STR_PAD_LEFT); $nAudiophileRgAdjustBitstring = str_pad(Dec2Bin($MP3fileInfo['RIFF']['raw']['rgad']['nAudiophileRgAdjust']), 16, '0', STR_PAD_LEFT); $MP3fileInfo['RIFF']['raw']['rgad']['radio']['name'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 0, 3)); $MP3fileInfo['RIFF']['raw']['rgad']['radio']['originator'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 3, 3)); $MP3fileInfo['RIFF']['raw']['rgad']['radio']['signbit'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 6, 1)); $MP3fileInfo['RIFF']['raw']['rgad']['radio']['adjustment'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 7, 9)); $MP3fileInfo['RIFF']['raw']['rgad']['audiophile']['name'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 0, 3)); $MP3fileInfo['RIFF']['raw']['rgad']['audiophile']['originator'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 3, 3)); $MP3fileInfo['RIFF']['raw']['rgad']['audiophile']['signbit'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 6, 1)); $MP3fileInfo['RIFF']['raw']['rgad']['audiophile']['adjustment'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 7, 9)); $MP3fileInfo['RIFF']['rgad']['peakamplitude'] = $MP3fileInfo['RIFF']['raw']['rgad']['fPeakAmplitude']; if ($MP3fileInfo['RIFF']['raw']['rgad']['radio']['name'] != 0 && $MP3fileInfo['RIFF']['raw']['rgad']['radio']['originator'] != 0) { $MP3fileInfo['RIFF']['rgad']['radio']['name'] = RGADnameLookup($MP3fileInfo['RIFF']['raw']['rgad']['radio']['name']); $MP3fileInfo['RIFF']['rgad']['radio']['originator'] = RGADoriginatorLookup($MP3fileInfo['RIFF']['raw']['rgad']['radio']['originator']); $MP3fileInfo['RIFF']['rgad']['radio']['adjustment'] = RGADadjustmentLookup($MP3fileInfo['RIFF']['raw']['rgad']['radio']['adjustment'], $MP3fileInfo['RIFF']['raw']['rgad']['radio']['signbit']); } if ($MP3fileInfo['RIFF']['raw']['rgad']['audiophile']['name'] != 0 && $MP3fileInfo['RIFF']['raw']['rgad']['audiophile']['originator'] != 0) { $MP3fileInfo['RIFF']['rgad']['audiophile']['name'] = RGADnameLookup($MP3fileInfo['RIFF']['raw']['rgad']['audiophile']['name']); $MP3fileInfo['RIFF']['rgad']['audiophile']['originator'] = RGADoriginatorLookup($MP3fileInfo['RIFF']['raw']['rgad']['audiophile']['originator']); $MP3fileInfo['RIFF']['rgad']['audiophile']['adjustment'] = RGADadjustmentLookup($MP3fileInfo['RIFF']['raw']['rgad']['audiophile']['adjustment'], $MP3fileInfo['RIFF']['raw']['rgad']['audiophile']['signbit']); } } if (isset($MP3fileInfo['RIFF']['WAVE']['fact'][0]['data'])) { $MP3fileInfo['RIFF']['raw']['fact']['NumberOfSamples'] = LittleEndian2Int(substr($MP3fileInfo['RIFF']['WAVE']['fact'][0]['data'], 0, 4)); if (isset($MP3fileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec']) && $MP3fileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec']) { $MP3fileInfo['playtime_seconds'] = (double) $MP3fileInfo['RIFF']['raw']['fact']['NumberOfSamples'] / $MP3fileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec']; } if (isset($MP3fileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec']) && $MP3fileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec']) { $MP3fileInfo['audiobytes'] = CastAsInt(round($MP3fileInfo['playtime_seconds'] * $MP3fileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec'])); $MP3fileInfo['bitrate'] = CastAsInt($MP3fileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec'] * 8); } } if (!isset($MP3fileInfo['audiobytes']) && isset($MP3fileInfo['RIFF']['WAVE']['data'][0]['size'])) { $MP3fileInfo['audiobytes'] = $MP3fileInfo['RIFF']['WAVE']['data'][0]['size']; } if (!isset($MP3fileInfo['bitrate']) && isset($MP3fileInfo['RIFF']['audio']["{$streamindex}"]['bitrate']) && isset($MP3fileInfo['audiobytes'])) { $MP3fileInfo['bitrate'] = $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['bitrate']; $MP3fileInfo['playtime_seconds'] = (double) ($MP3fileInfo['audiobytes'] * 8 / $MP3fileInfo['bitrate']); } break; case 'AVI ': $MP3fileInfo['fileformat'] = 'avi'; if (isset($MP3fileInfo['RIFF']['AVI ']['hdrl']['avih']["{$streamindex}"]['data'])) { $avihData = $MP3fileInfo['RIFF']['AVI ']['hdrl']['avih']["{$streamindex}"]['data']; $MP3fileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'] = LittleEndian2Int(substr($avihData, 0, 4)); // frame display rate (or 0L) $MP3fileInfo['RIFF']['raw']['avih']['dwMaxBytesPerSec'] = LittleEndian2Int(substr($avihData, 4, 4)); // max. transfer rate $MP3fileInfo['RIFF']['raw']['avih']['dwPaddingGranularity'] = LittleEndian2Int(substr($avihData, 8, 4)); // pad to multiples of this size; normally 2K. $MP3fileInfo['RIFF']['raw']['avih']['dwFlags'] = LittleEndian2Int(substr($avihData, 12, 4)); // the ever-present flags $MP3fileInfo['RIFF']['raw']['avih']['dwTotalFrames'] = LittleEndian2Int(substr($avihData, 16, 4)); // # frames in file $MP3fileInfo['RIFF']['raw']['avih']['dwInitialFrames'] = LittleEndian2Int(substr($avihData, 20, 4)); $MP3fileInfo['RIFF']['raw']['avih']['dwStreams'] = LittleEndian2Int(substr($avihData, 24, 4)); $MP3fileInfo['RIFF']['raw']['avih']['dwSuggestedBufferSize'] = LittleEndian2Int(substr($avihData, 28, 4)); $MP3fileInfo['RIFF']['raw']['avih']['dwWidth'] = LittleEndian2Int(substr($avihData, 32, 4)); $MP3fileInfo['RIFF']['raw']['avih']['dwHeight'] = LittleEndian2Int(substr($avihData, 36, 4)); $MP3fileInfo['RIFF']['raw']['avih']['dwScale'] = LittleEndian2Int(substr($avihData, 40, 4)); $MP3fileInfo['RIFF']['raw']['avih']['dwRate'] = LittleEndian2Int(substr($avihData, 44, 4)); $MP3fileInfo['RIFF']['raw']['avih']['dwStart'] = LittleEndian2Int(substr($avihData, 48, 4)); $MP3fileInfo['RIFF']['raw']['avih']['dwLength'] = LittleEndian2Int(substr($avihData, 52, 4)); $MP3fileInfo['RIFF']['raw']['avih']['flags']['hasindex'] = (bool) ($MP3fileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x10); $MP3fileInfo['RIFF']['raw']['avih']['flags']['mustuseindex'] = (bool) ($MP3fileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x20); $MP3fileInfo['RIFF']['raw']['avih']['flags']['interleaved'] = (bool) ($MP3fileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x100); $MP3fileInfo['RIFF']['raw']['avih']['flags']['trustcktype'] = (bool) ($MP3fileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x800); $MP3fileInfo['RIFF']['raw']['avih']['flags']['capturedfile'] = (bool) ($MP3fileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x10000); $MP3fileInfo['RIFF']['raw']['avih']['flags']['copyrighted'] = (bool) ($MP3fileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x20010); $MP3fileInfo['RIFF']['video']["{$streamindex}"]['frame_width'] = $MP3fileInfo['RIFF']['raw']['avih']['dwWidth']; $MP3fileInfo['RIFF']['video']["{$streamindex}"]['frame_height'] = $MP3fileInfo['RIFF']['raw']['avih']['dwHeight']; $MP3fileInfo['RIFF']['video']["{$streamindex}"]['frame_rate'] = round(1000000 / $MP3fileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'], 3); $MP3fileInfo['playtime_seconds'] = $MP3fileInfo['RIFF']['raw']['avih']['dwTotalFrames'] * ($MP3fileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'] / 1000000); $MP3fileInfo['bitrate'] = $MP3fileInfo['filesize'] / $MP3fileInfo['playtime_seconds'] * 8; } if (isset($MP3fileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'][0]['data'])) { if (is_array($MP3fileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'])) { for ($i = 0; $i < count($MP3fileInfo['RIFF']['AVI ']['hdrl']['strl']['strh']); $i++) { if (isset($MP3fileInfo['RIFF']['AVI ']['hdrl']['strl']['strh']["{$i}"]['data'])) { $strhData = $MP3fileInfo['RIFF']['AVI ']['hdrl']['strl']['strh']["{$i}"]['data']; $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['fccType'] = substr($strhData, 0, 4); $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['fccHandler'] = substr($strhData, 4, 4); $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['dwFlags'] = LittleEndian2Int(substr($strhData, 8, 4)); // Contains AVITF_* flags $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['wPriority'] = LittleEndian2Int(substr($strhData, 12, 2)); $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['wLanguage'] = LittleEndian2Int(substr($strhData, 14, 2)); $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['dwInitialFrames'] = LittleEndian2Int(substr($strhData, 16, 4)); $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['dwScale'] = LittleEndian2Int(substr($strhData, 20, 4)); $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['dwRate'] = LittleEndian2Int(substr($strhData, 24, 4)); $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['dwStart'] = LittleEndian2Int(substr($strhData, 28, 4)); $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['dwLength'] = LittleEndian2Int(substr($strhData, 32, 4)); $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['dwSuggestedBufferSize'] = LittleEndian2Int(substr($strhData, 36, 4)); $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['dwQuality'] = LittleEndian2Int(substr($strhData, 40, 4)); $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['dwSampleSize'] = LittleEndian2Int(substr($strhData, 44, 4)); $MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['rcFrame'] = LittleEndian2Int(substr($strhData, 48, 4)); if (isset($MP3fileInfo['RIFF']['AVI ']['hdrl']['strl']['strf']["{$i}"]['data'])) { $strfData = $MP3fileInfo['RIFF']['AVI ']['hdrl']['strl']['strf']["{$i}"]['data']; switch ($MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['fccType']) { case 'auds': if (isset($MP3fileInfo['RIFF']['audio']) && is_array($MP3fileInfo['RIFF']['audio'])) { $streamindex = count($MP3fileInfo['RIFF']['audio']); } $MP3fileInfo['RIFF']['raw']['strf']['auds']["{$streamindex}"]['wFormatTag'] = LittleEndian2Int(substr($strfData, 0, 2)); $MP3fileInfo['RIFF']['raw']['strf']['auds']["{$streamindex}"]['nChannels'] = LittleEndian2Int(substr($strfData, 2, 2)); $MP3fileInfo['RIFF']['raw']['strf']['auds']["{$streamindex}"]['nSamplesPerSec'] = LittleEndian2Int(substr($strfData, 4, 4)); $MP3fileInfo['RIFF']['raw']['strf']['auds']["{$streamindex}"]['nAvgBytesPerSec'] = LittleEndian2Int(substr($strfData, 8, 4)); $MP3fileInfo['RIFF']['raw']['strf']['auds']["{$streamindex}"]['nBlockAlign'] = LittleEndian2Int(substr($strfData, 12, 2)); $MP3fileInfo['RIFF']['raw']['strf']['auds']["{$streamindex}"]['nBitsPerSample'] = LittleEndian2Int(substr($strfData, 14, 2)); $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['format'] = RIFFwFormatTagLookup($MP3fileInfo['RIFF']['raw']['strf']['auds']["{$streamindex}"]['wFormatTag']); $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['channels'] = $MP3fileInfo['RIFF']['raw']['strf']['auds']["{$streamindex}"]['nChannels']; $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['channelmode'] = $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['channels'] == 1 ? 'mono' : 'stereo'; $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['frequency'] = $MP3fileInfo['RIFF']['raw']['strf']['auds']["{$streamindex}"]['nSamplesPerSec']; $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['bitrate'] = $MP3fileInfo['RIFF']['raw']['strf']['auds']["{$streamindex}"]['nAvgBytesPerSec'] * 8; $MP3fileInfo['RIFF']['audio']["{$streamindex}"]['bitspersample'] = $MP3fileInfo['RIFF']['raw']['strf']['auds']["{$streamindex}"]['nBitsPerSample']; break; case 'vids': $MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['biSize'] = LittleEndian2Int(substr($strfData, 0, 4)); // number of bytes required by the BITMAPINFOHEADER structure $MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['biWidth'] = LittleEndian2Int(substr($strfData, 4, 4)); // width of the bitmap in pixels $MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['biHeight'] = LittleEndian2Int(substr($strfData, 8, 4)); // height of the bitmap in pixels. If biHeight is positive, the bitmap is a "bottom-up" DIB and its origin is the lower left corner. If biHeight is negative, the bitmap is a "top-down" DIB and its origin is the upper left corner $MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['biPlanes'] = LittleEndian2Int(substr($strfData, 12, 2)); // number of color planes on the target device. In most cases this value must be set to 1 $MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['biBitCount'] = LittleEndian2Int(substr($strfData, 14, 2)); // Specifies the number of bits per pixels $MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['fourcc'] = substr($strfData, 16, 4); // $MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['biSizeImage'] = LittleEndian2Int(substr($strfData, 20, 4)); // size of the bitmap data section of the image (the actual pixel data, excluding BITMAPINFOHEADER and RGBQUAD structures) $MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['biXPelsPerMeter'] = LittleEndian2Int(substr($strfData, 24, 4)); // horizontal resolution, in pixels per metre, of the target device $MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['biYPelsPerMeter'] = LittleEndian2Int(substr($strfData, 28, 4)); // vertical resolution, in pixels per metre, of the target device $MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['biClrUsed'] = LittleEndian2Int(substr($strfData, 32, 4)); // actual number of color indices in the color table used by the bitmap. If this value is zero, the bitmap uses the maximum number of colors corresponding to the value of the biBitCount member for the compression mode specified by biCompression $MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['biClrImportant'] = LittleEndian2Int(substr($strfData, 36, 4)); // number of color indices that are considered important for displaying the bitmap. If this value is zero, all colors are important $MP3fileInfo['RIFF']['video']["{$streamindex}"]['codec'] = RIFFfourccLookup($MP3fileInfo['RIFF']['raw']['strh']["{$i}"]['fccHandler']); if (!$MP3fileInfo['RIFF']['video']["{$streamindex}"]['codec'] && RIFFfourccLookup($MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['fourcc'])) { RIFFfourccLookup($MP3fileInfo['RIFF']['raw']['strf']['vids']["{$streamindex}"]['fourcc']); } break; } } } } } } break; default: unset($MP3fileInfo['fileformat']); break; } if (isset($MP3fileInfo['RIFF']['WAVE']['INFO']) && is_array($MP3fileInfo['RIFF']['WAVE']['INFO'])) { $MP3fileInfo['RIFF']['title'] = trim(substr($MP3fileInfo['RIFF']['WAVE']['INFO']['DISP'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['DISP']) - 1]['data'], 4)); $MP3fileInfo['RIFF']['artist'] = trim($MP3fileInfo['RIFF']['WAVE']['INFO']['IART'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['IART']) - 1]['data']); $MP3fileInfo['RIFF']['genre'] = trim($MP3fileInfo['RIFF']['WAVE']['INFO']['IGNR'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['IGNR']) - 1]['data']); $MP3fileInfo['RIFF']['comment'] = trim($MP3fileInfo['RIFF']['WAVE']['INFO']['ICMT'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['ICMT']) - 1]['data']); $MP3fileInfo['RIFF']['copyright'] = trim($MP3fileInfo['RIFF']['WAVE']['INFO']['ICOP'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['ICOP']) - 1]['data']); $MP3fileInfo['RIFF']['engineers'] = trim($MP3fileInfo['RIFF']['WAVE']['INFO']['IENG'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['IENG']) - 1]['data']); $MP3fileInfo['RIFF']['keywords'] = trim($MP3fileInfo['RIFF']['WAVE']['INFO']['IKEY'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['IKEY']) - 1]['data']); $MP3fileInfo['RIFF']['originalmedium'] = trim($MP3fileInfo['RIFF']['WAVE']['INFO']['IMED'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['IMED']) - 1]['data']); $MP3fileInfo['RIFF']['name'] = trim($MP3fileInfo['RIFF']['WAVE']['INFO']['INAM'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['INAM']) - 1]['data']); $MP3fileInfo['RIFF']['sourcesupplier'] = trim($MP3fileInfo['RIFF']['WAVE']['INFO']['ISRC'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['ISRC']) - 1]['data']); $MP3fileInfo['RIFF']['digitizer'] = trim($MP3fileInfo['RIFF']['WAVE']['INFO']['ITCH'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['ITCH']) - 1]['data']); $MP3fileInfo['RIFF']['subject'] = trim($MP3fileInfo['RIFF']['WAVE']['INFO']['ISBJ'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['ISBJ']) - 1]['data']); $MP3fileInfo['RIFF']['digitizationsource'] = trim($MP3fileInfo['RIFF']['WAVE']['INFO']['ISRF'][count($MP3fileInfo['RIFF']['WAVE']['INFO']['ISRF']) - 1]['data']); } foreach ($MP3fileInfo['RIFF'] as $key => $value) { if (!is_array($value) && !$value) { unset($MP3fileInfo['RIFF']["{$key}"]); } } return TRUE; }
function getRIFFHeaderFilepointer(&$fd, &$ThisFileInfo) { fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); $RIFFheader = fread($fd, 12); switch (substr($RIFFheader, 0, 4)) { case 'RIFF': case 'SDSS': // SDSS is identical to RIFF, just renamed. Used by SmartSound QuickTracks (www.smartsound.com) $ThisFileInfo['fileformat'] = 'riff'; $ThisFileInfo['RIFF'][substr($RIFFheader, 8, 4)] = ParseRIFF($fd, $ThisFileInfo['avdataoffset'] + 12, $ThisFileInfo['avdataoffset'] + LittleEndian2Int(substr($RIFFheader, 4, 4)), $ThisFileInfo); break; default: $ThisFileInfo['error'] .= "\n" . 'Cannot parse RIFF (this is maybe not a RIFF / WAV / AVI file?)'; unset($ThisFileInfo['fileformat']); return false; break; } $streamindex = 0; $arraykeys = array_keys($ThisFileInfo['RIFF']); switch ($arraykeys[0]) { case 'WAVE': $ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; $ThisFileInfo['audio']['dataformat'] = 'wav'; if (isset($ThisFileInfo['RIFF']['WAVE']['fmt '][0]['data'])) { $ThisFileInfo['RIFF']['audio'][$streamindex] = RIFFparseWAVEFORMATex($ThisFileInfo['RIFF']['WAVE']['fmt '][0]['data']); if ($ThisFileInfo['RIFF']['audio'][$streamindex] == 0) { $ThisFileInfo['error'] .= 'Corrupt RIFF file: bitrate_audio == zero'; return false; } $ThisFileInfo['RIFF']['raw']['fmt '] = $ThisFileInfo['RIFF']['audio'][$streamindex]['raw']; unset($ThisFileInfo['RIFF']['audio'][$streamindex]['raw']); $ThisFileInfo['audio'] = array_merge_noclobber($ThisFileInfo['audio'], $ThisFileInfo['RIFF']['audio'][$streamindex]); $ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['RIFF']['audio'][$streamindex]['bitrate']; $ThisFileInfo['playtime_seconds'] = (double) (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['audio']['bitrate']); if (isset($ThisFileInfo['RIFF']['WAVE']['data'][0]['offset']) && isset($ThisFileInfo['RIFF']['raw']['fmt ']['wFormatTag'])) { switch ($ThisFileInfo['RIFF']['raw']['fmt ']['wFormatTag']) { case 85: // LAME ACM require_once GETID3_INCLUDEPATH . 'getid3.mp3.php'; getOnlyMPEGaudioInfo($fd, $ThisFileInfo, $ThisFileInfo['RIFF']['WAVE']['data'][0]['offset'], false); $ThisFileInfo['audio']['dataformat'] = 'mp3'; if (isset($ThisFileInfo['mpeg']['audio'])) { $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['mpeg']['audio']['sample_rate']; $ThisFileInfo['audio']['channels'] = $ThisFileInfo['mpeg']['audio']['channels']; $ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['mpeg']['audio']['bitrate'] * 1000; $ThisFileInfo['bitrate'] = $ThisFileInfo['audio']['bitrate']; $ThisFileInfo['audio']['bitrate_mode'] = strtolower($ThisFileInfo['mpeg']['audio']['bitratemode']); } break; default: // do nothing break; } } } if (isset($ThisFileInfo['RIFF']['WAVE']['rgad'][0]['data'])) { require_once GETID3_INCLUDEPATH . 'getid3.rgad.php'; $rgadData = $ThisFileInfo['RIFF']['WAVE']['rgad'][0]['data']; $ThisFileInfo['RIFF']['raw']['rgad']['fPeakAmplitude'] = LittleEndian2Float(substr($rgadData, 0, 4)); $ThisFileInfo['RIFF']['raw']['rgad']['nRadioRgAdjust'] = LittleEndian2Int(substr($rgadData, 4, 2)); $ThisFileInfo['RIFF']['raw']['rgad']['nAudiophileRgAdjust'] = LittleEndian2Int(substr($rgadData, 6, 2)); $nRadioRgAdjustBitstring = str_pad(Dec2Bin($ThisFileInfo['RIFF']['raw']['rgad']['nRadioRgAdjust']), 16, '0', STR_PAD_LEFT); $nAudiophileRgAdjustBitstring = str_pad(Dec2Bin($ThisFileInfo['RIFF']['raw']['rgad']['nAudiophileRgAdjust']), 16, '0', STR_PAD_LEFT); $ThisFileInfo['RIFF']['raw']['rgad']['radio']['name'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 0, 3)); $ThisFileInfo['RIFF']['raw']['rgad']['radio']['originator'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 3, 3)); $ThisFileInfo['RIFF']['raw']['rgad']['radio']['signbit'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 6, 1)); $ThisFileInfo['RIFF']['raw']['rgad']['radio']['adjustment'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 7, 9)); $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['name'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 0, 3)); $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['originator'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 3, 3)); $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['signbit'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 6, 1)); $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['adjustment'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 7, 9)); $ThisFileInfo['RIFF']['rgad']['peakamplitude'] = $ThisFileInfo['RIFF']['raw']['rgad']['fPeakAmplitude']; if ($ThisFileInfo['RIFF']['raw']['rgad']['radio']['name'] != 0 && $ThisFileInfo['RIFF']['raw']['rgad']['radio']['originator'] != 0) { $ThisFileInfo['RIFF']['rgad']['radio']['name'] = RGADnameLookup($ThisFileInfo['RIFF']['raw']['rgad']['radio']['name']); $ThisFileInfo['RIFF']['rgad']['radio']['originator'] = RGADoriginatorLookup($ThisFileInfo['RIFF']['raw']['rgad']['radio']['originator']); $ThisFileInfo['RIFF']['rgad']['radio']['adjustment'] = RGADadjustmentLookup($ThisFileInfo['RIFF']['raw']['rgad']['radio']['adjustment'], $ThisFileInfo['RIFF']['raw']['rgad']['radio']['signbit']); } if ($ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['name'] != 0 && $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['originator'] != 0) { $ThisFileInfo['RIFF']['rgad']['audiophile']['name'] = RGADnameLookup($ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['name']); $ThisFileInfo['RIFF']['rgad']['audiophile']['originator'] = RGADoriginatorLookup($ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['originator']); $ThisFileInfo['RIFF']['rgad']['audiophile']['adjustment'] = RGADadjustmentLookup($ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['adjustment'], $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['signbit']); } } if (isset($ThisFileInfo['RIFF']['WAVE']['fact'][0]['data'])) { $ThisFileInfo['RIFF']['raw']['fact']['NumberOfSamples'] = LittleEndian2Int(substr($ThisFileInfo['RIFF']['WAVE']['fact'][0]['data'], 0, 4)); if (isset($ThisFileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec']) && $ThisFileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec'] > 0) { $ThisFileInfo['playtime_seconds'] = (double) $ThisFileInfo['RIFF']['raw']['fact']['NumberOfSamples'] / $ThisFileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec']; } if (isset($ThisFileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec']) && $ThisFileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec']) { $ThisFileInfo['audio']['bitrate'] = CastAsInt($ThisFileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec'] * 8); } } if (!isset($ThisFileInfo['audio']['bitrate']) && isset($ThisFileInfo['RIFF']['audio'][$streamindex]['bitrate'])) { $ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['RIFF']['audio'][$streamindex]['bitrate']; $ThisFileInfo['playtime_seconds'] = (double) (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['audio']['bitrate']); } break; case 'AVI ': $ThisFileInfo['video']['bitrate_mode'] = 'cbr'; $ThisFileInfo['video']['dataformat'] = 'avi'; $ThisFileInfo['mime_type'] = 'video/avi'; if (isset($ThisFileInfo['RIFF']['AVI ']['hdrl']['avih'][$streamindex]['data'])) { $avihData = $ThisFileInfo['RIFF']['AVI ']['hdrl']['avih'][$streamindex]['data']; $ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'] = LittleEndian2Int(substr($avihData, 0, 4)); // frame display rate (or 0L) if ($ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'] == 0) { $ThisFileInfo['error'] .= 'Corrupt RIFF file: avih.dwMicroSecPerFrame == zero'; return false; } $ThisFileInfo['RIFF']['raw']['avih']['dwMaxBytesPerSec'] = LittleEndian2Int(substr($avihData, 4, 4)); // max. transfer rate $ThisFileInfo['RIFF']['raw']['avih']['dwPaddingGranularity'] = LittleEndian2Int(substr($avihData, 8, 4)); // pad to multiples of this size; normally 2K. $ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] = LittleEndian2Int(substr($avihData, 12, 4)); // the ever-present flags $ThisFileInfo['RIFF']['raw']['avih']['dwTotalFrames'] = LittleEndian2Int(substr($avihData, 16, 4)); // # frames in file $ThisFileInfo['RIFF']['raw']['avih']['dwInitialFrames'] = LittleEndian2Int(substr($avihData, 20, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwStreams'] = LittleEndian2Int(substr($avihData, 24, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwSuggestedBufferSize'] = LittleEndian2Int(substr($avihData, 28, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwWidth'] = LittleEndian2Int(substr($avihData, 32, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwHeight'] = LittleEndian2Int(substr($avihData, 36, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwScale'] = LittleEndian2Int(substr($avihData, 40, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwRate'] = LittleEndian2Int(substr($avihData, 44, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwStart'] = LittleEndian2Int(substr($avihData, 48, 4)); $ThisFileInfo['RIFF']['raw']['avih']['dwLength'] = LittleEndian2Int(substr($avihData, 52, 4)); $ThisFileInfo['RIFF']['raw']['avih']['flags']['hasindex'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x10); $ThisFileInfo['RIFF']['raw']['avih']['flags']['mustuseindex'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x20); $ThisFileInfo['RIFF']['raw']['avih']['flags']['interleaved'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x100); $ThisFileInfo['RIFF']['raw']['avih']['flags']['trustcktype'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x800); $ThisFileInfo['RIFF']['raw']['avih']['flags']['capturedfile'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x10000); $ThisFileInfo['RIFF']['raw']['avih']['flags']['copyrighted'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x20010); $ThisFileInfo['RIFF']['video'][$streamindex]['frame_width'] = $ThisFileInfo['RIFF']['raw']['avih']['dwWidth']; $ThisFileInfo['RIFF']['video'][$streamindex]['frame_height'] = $ThisFileInfo['RIFF']['raw']['avih']['dwHeight']; $ThisFileInfo['RIFF']['video'][$streamindex]['frame_rate'] = round(1000000 / $ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'], 3); if (!isset($ThisFileInfo['video']['resolution_x'])) { $ThisFileInfo['video']['resolution_x'] = $ThisFileInfo['RIFF']['video'][$streamindex]['frame_width']; } if (!isset($ThisFileInfo['video']['resolution_y'])) { $ThisFileInfo['video']['resolution_y'] = $ThisFileInfo['RIFF']['video'][$streamindex]['frame_height']; } $ThisFileInfo['video']['frame_rate'] = $ThisFileInfo['RIFF']['video'][$streamindex]['frame_rate']; } if (isset($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'][0]['data'])) { if (is_array($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'])) { for ($i = 0; $i < count($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh']); $i++) { if (isset($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'][$i]['data'])) { $strhData = $ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'][$i]['data']; $strhfccType = substr($strhData, 0, 4); if (isset($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strf'][$i]['data'])) { $strfData = $ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strf'][$i]['data']; switch ($strhfccType) { case 'auds': $ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; $ThisFileInfo['audio']['dataformat'] = 'wav'; if (isset($ThisFileInfo['RIFF']['audio']) && is_array($ThisFileInfo['RIFF']['audio'])) { $streamindex = count($ThisFileInfo['RIFF']['audio']); } $ThisFileInfo['RIFF']['audio'][$streamindex] = RIFFparseWAVEFORMATex($strfData); $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex] = $ThisFileInfo['RIFF']['audio'][$streamindex]['raw']; unset($ThisFileInfo['RIFF']['audio'][$streamindex]['raw']); $ThisFileInfo['audio'] = array_merge_noclobber($ThisFileInfo['audio'], $ThisFileInfo['RIFF']['audio'][$streamindex]); switch ($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['wFormatTag']) { case 85: $ThisFileInfo['audio']['dataformat'] = 'mp3'; break; case 8192: $ThisFileInfo['audio']['dataformat'] = 'ac3'; break; default: $ThisFileInfo['audio']['dataformat'] = 'wav'; break; } break; case 'iavs': case 'vids': $ThisFileInfo['RIFF']['raw']['strh'][$i]['fccType'] = substr($strhData, 0, 4); // same as $strhfccType; $ThisFileInfo['RIFF']['raw']['strh'][$i]['fccHandler'] = substr($strhData, 4, 4); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwFlags'] = LittleEndian2Int(substr($strhData, 8, 4)); // Contains AVITF_* flags $ThisFileInfo['RIFF']['raw']['strh'][$i]['wPriority'] = LittleEndian2Int(substr($strhData, 12, 2)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['wLanguage'] = LittleEndian2Int(substr($strhData, 14, 2)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwInitialFrames'] = LittleEndian2Int(substr($strhData, 16, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwScale'] = LittleEndian2Int(substr($strhData, 20, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwRate'] = LittleEndian2Int(substr($strhData, 24, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwStart'] = LittleEndian2Int(substr($strhData, 28, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwLength'] = LittleEndian2Int(substr($strhData, 32, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwSuggestedBufferSize'] = LittleEndian2Int(substr($strhData, 36, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwQuality'] = LittleEndian2Int(substr($strhData, 40, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['dwSampleSize'] = LittleEndian2Int(substr($strhData, 44, 4)); $ThisFileInfo['RIFF']['raw']['strh'][$i]['rcFrame'] = LittleEndian2Int(substr($strhData, 48, 4)); $ThisFileInfo['RIFF']['video'][$streamindex]['codec'] = RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strh'][$i]['fccHandler']); if (!$ThisFileInfo['RIFF']['video'][$streamindex]['codec'] && isset($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']) && RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc'])) { $ThisFileInfo['RIFF']['video'][$streamindex]['codec'] = RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']); } $ThisFileInfo['video']['codec'] = $ThisFileInfo['RIFF']['video'][$streamindex]['codec']; switch ($strhfccType) { case 'vids': $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biSize'] = LittleEndian2Int(substr($strfData, 0, 4)); // number of bytes required by the BITMAPINFOHEADER structure $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biWidth'] = LittleEndian2Int(substr($strfData, 4, 4)); // width of the bitmap in pixels $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biHeight'] = LittleEndian2Int(substr($strfData, 8, 4)); // height of the bitmap in pixels. If biHeight is positive, the bitmap is a 'bottom-up' DIB and its origin is the lower left corner. If biHeight is negative, the bitmap is a 'top-down' DIB and its origin is the upper left corner $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biPlanes'] = LittleEndian2Int(substr($strfData, 12, 2)); // number of color planes on the target device. In most cases this value must be set to 1 $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biBitCount'] = LittleEndian2Int(substr($strfData, 14, 2)); // Specifies the number of bits per pixels $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc'] = substr($strfData, 16, 4); // $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biSizeImage'] = LittleEndian2Int(substr($strfData, 20, 4)); // size of the bitmap data section of the image (the actual pixel data, excluding BITMAPINFOHEADER and RGBQUAD structures) $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biXPelsPerMeter'] = LittleEndian2Int(substr($strfData, 24, 4)); // horizontal resolution, in pixels per metre, of the target device $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biYPelsPerMeter'] = LittleEndian2Int(substr($strfData, 28, 4)); // vertical resolution, in pixels per metre, of the target device $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biClrUsed'] = LittleEndian2Int(substr($strfData, 32, 4)); // actual number of color indices in the color table used by the bitmap. If this value is zero, the bitmap uses the maximum number of colors corresponding to the value of the biBitCount member for the compression mode specified by biCompression $ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biClrImportant'] = LittleEndian2Int(substr($strfData, 36, 4)); // number of color indices that are considered important for displaying the bitmap. If this value is zero, all colors are important if ($ThisFileInfo['RIFF']['video'][$streamindex]['codec'] == 'DV') { $ThisFileInfo['RIFF']['video'][$streamindex]['dv_type'] = 2; } break; case 'iavs': $ThisFileInfo['RIFF']['video'][$streamindex]['dv_type'] = 1; break; } break; default: $ThisFileInfo['warning'] .= "\n" . 'Unhandled fccType for stream (' . $i . '): "' . $strhfccType . '"'; break; } } } if (isset($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']) && RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc'])) { $ThisFileInfo['RIFF']['video'][$streamindex]['codec'] = RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']); $ThisFileInfo['video']['codec'] = $ThisFileInfo['RIFF']['video'][$streamindex]['codec']; } } } } break; case 'CDDA': $ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; $ThisFileInfo['audio']['dataformat'] = 'cda'; unset($ThisFileInfo['mime_type']); if (isset($ThisFileInfo['RIFF']['CDDA']['fmt '][0]['data'])) { $fmtData = $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['data']; $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['unknown1'] = LittleEndian2Int(substr($fmtData, 0, 2)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['track_num'] = LittleEndian2Int(substr($fmtData, 2, 2)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['disc_id'] = LittleEndian2Int(substr($fmtData, 4, 4)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['start_offset_frame'] = LittleEndian2Int(substr($fmtData, 8, 4)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['playtime_frames'] = LittleEndian2Int(substr($fmtData, 12, 4)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['unknown6'] = LittleEndian2Int(substr($fmtData, 16, 4)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['unknown7'] = LittleEndian2Int(substr($fmtData, 20, 4)); $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['start_offset_seconds'] = (double) $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['start_offset_frame'] / 75; $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['playtime_seconds'] = (double) $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['playtime_frames'] / 75; $ThisFileInfo['comments']['track'] = $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['track_num']; $ThisFileInfo['playtime_seconds'] = $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['playtime_seconds']; // hardcoded data for CD-audio $ThisFileInfo['audio']['sample_rate'] = 44100; $ThisFileInfo['audio']['channels'] = 2; $ThisFileInfo['audio']['bits_per_sample'] = 16; $ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['audio']['sample_rate'] * $ThisFileInfo['audio']['channels'] * $ThisFileInfo['audio']['bits_per_sample']; $ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; } break; default: unset($ThisFileInfo['fileformat']); break; } if (isset($ThisFileInfo['RIFF']['WAVE']['DISP']) && is_array($ThisFileInfo['RIFF']['WAVE']['DISP'])) { $ThisFileInfo['tags'][] = 'riff'; $ThisFileInfo['RIFF']['comments']['title'][] = trim(substr($ThisFileInfo['RIFF']['WAVE']['DISP'][count($ThisFileInfo['RIFF']['WAVE']['DISP']) - 1]['data'], 4)); } if (isset($ThisFileInfo['RIFF']['WAVE']['INFO']) && is_array($ThisFileInfo['RIFF']['WAVE']['INFO'])) { $ThisFileInfo['tags'][] = 'riff'; $RIFFinfoKeyLookup = array('IART' => 'artist', 'IGNR' => 'genre', 'ICMT' => 'comment', 'ICOP' => 'copyright', 'IENG' => 'engineers', 'IKEY' => 'keywords', 'IMED' => 'orignalmedium', 'INAM' => 'name', 'ISRC' => 'sourcesupplier', 'ITCH' => 'digitizer', 'ISBJ' => 'subject', 'ISRF' => 'digitizationsource'); foreach ($RIFFinfoKeyLookup as $key => $value) { foreach ($ThisFileInfo['RIFF']['WAVE']['INFO']["{$key}"] as $commentid => $commentdata) { if (trim($commentdata['data']) != '') { $ThisFileInfo['RIFF']['comments']["{$value}"][] = trim($commentdata['data']); } } } } if (!empty($ThisFileInfo['RIFF']['comments'])) { CopyFormatCommentsToRootComments($ThisFileInfo['RIFF']['comments'], $ThisFileInfo, true, true, true); } if (!isset($ThisFileInfo['playtime_seconds'])) { $ThisFileInfo['playtime_seconds'] = 0; } if (isset($ThisFileInfo['RIFF']['raw']['avih']['dwTotalFrames']) && isset($ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'])) { $ThisFileInfo['playtime_seconds'] = $ThisFileInfo['RIFF']['raw']['avih']['dwTotalFrames'] * ($ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'] / 1000000); } if ($ThisFileInfo['playtime_seconds'] > 0) { if (isset($ThisFileInfo['RIFF']['audio']) && isset($ThisFileInfo['RIFF']['video'])) { if (!isset($ThisFileInfo['bitrate'])) { $ThisFileInfo['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'] * 8; } } elseif (isset($ThisFileInfo['RIFF']['audio']) && !isset($ThisFileInfo['RIFF']['video'])) { if (!isset($ThisFileInfo['audio']['bitrate'])) { $ThisFileInfo['audio']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'] * 8; } } elseif (!isset($ThisFileInfo['RIFF']['audio']) && isset($ThisFileInfo['RIFF']['video'])) { if (!isset($ThisFileInfo['video']['bitrate'])) { $ThisFileInfo['video']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'] * 8; } } } if (isset($ThisFileInfo['RIFF']['video']) && isset($ThisFileInfo['audio']['bitrate']) && $ThisFileInfo['audio']['bitrate'] > 0 && $ThisFileInfo['playtime_seconds'] > 0) { $ThisFileInfo['audio']['bitrate'] = 0; $ThisFileInfo['video']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'] * 8; foreach ($ThisFileInfo['RIFF']['audio'] as $channelnumber => $audioinfoarray) { $ThisFileInfo['video']['bitrate'] -= $audioinfoarray['bitrate']; $ThisFileInfo['audio']['bitrate'] += $audioinfoarray['bitrate']; } if ($ThisFileInfo['video']['bitrate'] <= 0) { unset($ThisFileInfo['video']['bitrate']); } if ($ThisFileInfo['audio']['bitrate'] <= 0) { unset($ThisFileInfo['audio']['bitrate']); } } if (!empty($ThisFileInfo['RIFF']['raw']['fmt ']['nBitsPerSample'])) { $ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['RIFF']['raw']['fmt ']['nBitsPerSample']; } // Skip RIFF header $ThisFileInfo['avdataoffset'] += 44; return true; }