/**
* @return bool
*/
public function analyze()
{
$info =& $this->getid3->info;
if ($info['avdataend'] <= $info['avdataoffset']) {
$info['error'][] = '"avdataend" (' . $info['avdataend'] . ') is unexpectedly less-than-or-equal-to "avdataoffset" (' . $info['avdataoffset'] . ')';
return false;
}
$info['fileformat'] = 'mpeg';
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$MPEGstreamData = fread($this->getid3->fp, min(100000, $info['avdataend'] - $info['avdataoffset']));
$MPEGstreamDataLength = strlen($MPEGstreamData);
$foundVideo = true;
$VideoChunkOffset = 0;
while (substr($MPEGstreamData, $VideoChunkOffset++, 4) !== self::GETID3_MPEG_VIDEO_SEQUENCE_HEADER) {
if ($VideoChunkOffset >= $MPEGstreamDataLength) {
$foundVideo = false;
break;
}
}
if ($foundVideo) {
// Start code 32 bits
// horizontal frame size 12 bits
// vertical frame size 12 bits
// pixel aspect ratio 4 bits
// frame rate 4 bits
// bitrate 18 bits
// marker bit 1 bit
// VBV buffer size 10 bits
// constrained parameter flag 1 bit
// intra quant. matrix flag 1 bit
// intra quant. matrix values 512 bits (present if matrix flag == 1)
// non-intra quant. matrix flag 1 bit
// non-intra quant. matrix values 512 bits (present if matrix flag == 1)
$info['video']['dataformat'] = 'mpeg';
$VideoChunkOffset += strlen(self::GETID3_MPEG_VIDEO_SEQUENCE_HEADER) - 1;
$FrameSizeDWORD = Helper::BigEndian2Int(substr($MPEGstreamData, $VideoChunkOffset, 3));
$VideoChunkOffset += 3;
$AspectRatioFrameRateDWORD = Helper::BigEndian2Int(substr($MPEGstreamData, $VideoChunkOffset, 1));
$VideoChunkOffset += 1;
$assortedinformation = Helper::BigEndian2Bin(substr($MPEGstreamData, $VideoChunkOffset, 4));
$VideoChunkOffset += 4;
$info['mpeg']['video']['raw']['framesize_horizontal'] = ($FrameSizeDWORD & 0xfff000) >> 12;
// 12 bits for horizontal frame size
$info['mpeg']['video']['raw']['framesize_vertical'] = $FrameSizeDWORD & 0xfff;
// 12 bits for vertical frame size
$info['mpeg']['video']['raw']['pixel_aspect_ratio'] = ($AspectRatioFrameRateDWORD & 0xf0) >> 4;
$info['mpeg']['video']['raw']['frame_rate'] = $AspectRatioFrameRateDWORD & 0xf;
$info['mpeg']['video']['framesize_horizontal'] = $info['mpeg']['video']['raw']['framesize_horizontal'];
$info['mpeg']['video']['framesize_vertical'] = $info['mpeg']['video']['raw']['framesize_vertical'];
$info['mpeg']['video']['pixel_aspect_ratio'] = $this->MPEGvideoAspectRatioLookup($info['mpeg']['video']['raw']['pixel_aspect_ratio']);
$info['mpeg']['video']['pixel_aspect_ratio_text'] = $this->MPEGvideoAspectRatioTextLookup($info['mpeg']['video']['raw']['pixel_aspect_ratio']);
$info['mpeg']['video']['frame_rate'] = $this->MPEGvideoFramerateLookup($info['mpeg']['video']['raw']['frame_rate']);
$info['mpeg']['video']['raw']['bitrate'] = Helper::Bin2Dec(substr($assortedinformation, 0, 18));
$info['mpeg']['video']['raw']['marker_bit'] = (bool) Helper::Bin2Dec(substr($assortedinformation, 18, 1));
$info['mpeg']['video']['raw']['vbv_buffer_size'] = Helper::Bin2Dec(substr($assortedinformation, 19, 10));
$info['mpeg']['video']['raw']['constrained_param_flag'] = (bool) Helper::Bin2Dec(substr($assortedinformation, 29, 1));
$info['mpeg']['video']['raw']['intra_quant_flag'] = (bool) Helper::Bin2Dec(substr($assortedinformation, 30, 1));
if ($info['mpeg']['video']['raw']['intra_quant_flag']) {
// read 512 bits
$info['mpeg']['video']['raw']['intra_quant'] = Helper::BigEndian2Bin(substr($MPEGstreamData, $VideoChunkOffset, 64));
$VideoChunkOffset += 64;
$info['mpeg']['video']['raw']['non_intra_quant_flag'] = (bool) Helper::Bin2Dec(substr($info['mpeg']['video']['raw']['intra_quant'], 511, 1));
$info['mpeg']['video']['raw']['intra_quant'] = Helper::Bin2Dec(substr($assortedinformation, 31, 1)) . substr(Helper::BigEndian2Bin(substr($MPEGstreamData, $VideoChunkOffset, 64)), 0, 511);
if ($info['mpeg']['video']['raw']['non_intra_quant_flag']) {
$info['mpeg']['video']['raw']['non_intra_quant'] = substr($MPEGstreamData, $VideoChunkOffset, 64);
$VideoChunkOffset += 64;
}
} else {
$info['mpeg']['video']['raw']['non_intra_quant_flag'] = (bool) Helper::Bin2Dec(substr($assortedinformation, 31, 1));
if ($info['mpeg']['video']['raw']['non_intra_quant_flag']) {
$info['mpeg']['video']['raw']['non_intra_quant'] = substr($MPEGstreamData, $VideoChunkOffset, 64);
$VideoChunkOffset += 64;
}
}
if ($info['mpeg']['video']['raw']['bitrate'] == 0x3ffff) {
// 18 set bits
$info['warning'][] = 'This version of GetId3Core() [' . $this->getid3->version() . '] cannot determine average bitrate of VBR MPEG video files';
$info['mpeg']['video']['bitrate_mode'] = 'vbr';
} else {
$info['mpeg']['video']['bitrate'] = $info['mpeg']['video']['raw']['bitrate'] * 400;
$info['mpeg']['video']['bitrate_mode'] = 'cbr';
$info['video']['bitrate'] = $info['mpeg']['video']['bitrate'];
}
$info['video']['resolution_x'] = $info['mpeg']['video']['framesize_horizontal'];
$info['video']['resolution_y'] = $info['mpeg']['video']['framesize_vertical'];
$info['video']['frame_rate'] = $info['mpeg']['video']['frame_rate'];
$info['video']['bitrate_mode'] = $info['mpeg']['video']['bitrate_mode'];
$info['video']['pixel_aspect_ratio'] = $info['mpeg']['video']['pixel_aspect_ratio'];
$info['video']['lossless'] = false;
$info['video']['bits_per_sample'] = 24;
} else {
$info['error'][] = 'Could not find start of video block in the first 100,000 bytes (or before end of file) - this might not be an MPEG-video file?';
}
//0x000001B3 begins the sequence_header of every MPEG video stream.
//But in MPEG-2, this header must immediately be followed by an
//extension_start_code (0x000001B5) with a sequence_extension ID (1).
//(This extension contains all the additional MPEG-2 stuff.)
//MPEG-1 doesn't have this extension, so that's a sure way to tell the
//difference between MPEG-1 and MPEG-2 video streams.
if (substr($MPEGstreamData, $VideoChunkOffset, 4) == self::GETID3_MPEG_VIDEO_EXTENSION_START) {
$info['video']['codec'] = 'MPEG-2';
} else {
$info['video']['codec'] = 'MPEG-1';
}
$AudioChunkOffset = 0;
while (true) {
while (substr($MPEGstreamData, $AudioChunkOffset++, 4) !== self::GETID3_MPEG_AUDIO_START) {
if ($AudioChunkOffset >= $MPEGstreamDataLength) {
break 2;
}
}
$getid3_temp = new GetId3Core();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info = $info;
$getid3_mp3 = new Mp3($getid3_temp);
for ($i = 0; $i <= 7; ++$i) {
// some files have the MPEG-audio header 8 bytes after the end of the $00 $00 $01 $C0 signature, some have it up to 13 bytes (or more?) after
// I have no idea why or what the difference is, so this is a stupid hack.
// If anybody has any better idea of what's going on, please let me know - info@getid3.org
fseek($getid3_temp->fp, ftell($this->getid3->fp), SEEK_SET);
$getid3_temp->info = $info;
// only overwrite real data if valid header found
if ($getid3_mp3->decodeMPEGaudioHeader($AudioChunkOffset + 3 + 8 + $i, $getid3_temp->info, false)) {
$info = $getid3_temp->info;
$info['audio']['bitrate_mode'] = 'cbr';
$info['audio']['lossless'] = false;
unset($getid3_temp, $getid3_mp3);
break 2;
}
}
unset($getid3_temp, $getid3_mp3);
}
// Temporary hack to account for interleaving overhead:
if (!empty($info['video']['bitrate']) && !empty($info['audio']['bitrate'])) {
$info['playtime_seconds'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / ($info['video']['bitrate'] + $info['audio']['bitrate']);
// Interleaved MPEG audio/video files have a certain amount of overhead that varies
// by both video and audio bitrates, and not in any sensible, linear/logarithmic patter
// Use interpolated lookup tables to approximately guess how much is overhead, because
// playtime is calculated as filesize / total-bitrate
$info['playtime_seconds'] *= $this->MPEGsystemNonOverheadPercentage($info['video']['bitrate'], $info['audio']['bitrate']);
//switch ($info['video']['bitrate']) {
// case('5000000'):
// $multiplier = 0.93292642112380355828048824319889;
// break;
// case('5500000'):
// $multiplier = 0.93582895375200989965359777343219;
// break;
// case('6000000'):
// $multiplier = 0.93796247714820932532911373859139;
// break;
// case('7000000'):
// $multiplier = 0.9413264083635103463010117778776;
// break;
// default:
// $multiplier = 1;
// break;
//}
//$info['playtime_seconds'] *= $multiplier;
//$info['warning'][] = 'Interleaved MPEG audio/video playtime may be inaccurate. With current hack should be within a few seconds of accurate. Report to info@getid3.org if off by more than 10 seconds.';
if ($info['video']['bitrate'] < 50000) {
$info['warning'][] = 'Interleaved MPEG audio/video playtime may be slightly inaccurate for video bitrates below 100kbps. Except in extreme low-bitrate situations, error should be less than 1%. Report to info@getid3.org if greater than this.';
}
}
return true;
}
/**
* @param type $parsedFrame
*
* @return bool
*/
public function ParseID3v2Frame(&$parsedFrame)
{
// shortcuts
$info =& $this->getid3->info;
$id3v2_majorversion = $info['id3v2']['majorversion'];
$parsedFrame['framenamelong'] = $this->FrameNameLongLookup($parsedFrame['frame_name']);
if (empty($parsedFrame['framenamelong'])) {
unset($parsedFrame['framenamelong']);
}
$parsedFrame['framenameshort'] = $this->FrameNameShortLookup($parsedFrame['frame_name']);
if (empty($parsedFrame['framenameshort'])) {
unset($parsedFrame['framenameshort']);
}
if ($id3v2_majorversion >= 3) {
// frame flags are not part of the ID3v2.2 standard
if ($id3v2_majorversion == 3) {
// Frame Header Flags
// %abc00000 %ijk00000
$parsedFrame['flags']['TagAlterPreservation'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x8000);
// a - Tag alter preservation
$parsedFrame['flags']['FileAlterPreservation'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x4000);
// b - File alter preservation
$parsedFrame['flags']['ReadOnly'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x2000);
// c - Read only
$parsedFrame['flags']['compression'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x80);
// i - Compression
$parsedFrame['flags']['Encryption'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x40);
// j - Encryption
$parsedFrame['flags']['GroupingIdentity'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x20);
// k - Grouping identity
} elseif ($id3v2_majorversion == 4) {
// Frame Header Flags
// %0abc0000 %0h00kmnp
$parsedFrame['flags']['TagAlterPreservation'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x4000);
// a - Tag alter preservation
$parsedFrame['flags']['FileAlterPreservation'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x2000);
// b - File alter preservation
$parsedFrame['flags']['ReadOnly'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x1000);
// c - Read only
$parsedFrame['flags']['GroupingIdentity'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x40);
// h - Grouping identity
$parsedFrame['flags']['compression'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x8);
// k - Compression
$parsedFrame['flags']['Encryption'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x4);
// m - Encryption
$parsedFrame['flags']['Unsynchronisation'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x2);
// n - Unsynchronisation
$parsedFrame['flags']['DataLengthIndicator'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x1);
// p - Data length indicator
// Frame-level de-unsynchronisation - ID3v2.4
if ($parsedFrame['flags']['Unsynchronisation']) {
$parsedFrame['data'] = $this->DeUnsynchronise($parsedFrame['data']);
}
if ($parsedFrame['flags']['DataLengthIndicator']) {
$parsedFrame['data_length_indicator'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 0, 4), 1);
$parsedFrame['data'] = substr($parsedFrame['data'], 4);
}
}
// Frame-level de-compression
if ($parsedFrame['flags']['compression']) {
$parsedFrame['decompressed_size'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 0, 4));
if (!function_exists('gzuncompress')) {
$info['warning'][] = 'gzuncompress() support required to decompress ID3v2 frame "' . $parsedFrame['frame_name'] . '"';
} else {
if ($decompresseddata = @gzuncompress(substr($parsedFrame['data'], 4))) {
//if ($decompresseddata = @gzuncompress($parsedFrame['data'])) {
$parsedFrame['data'] = $decompresseddata;
unset($decompresseddata);
} else {
$info['warning'][] = 'gzuncompress() failed on compressed contents of ID3v2 frame "' . $parsedFrame['frame_name'] . '"';
}
}
}
}
if (!empty($parsedFrame['flags']['DataLengthIndicator'])) {
if ($parsedFrame['data_length_indicator'] != strlen($parsedFrame['data'])) {
$info['warning'][] = 'ID3v2 frame "' . $parsedFrame['frame_name'] . '" should be ' . $parsedFrame['data_length_indicator'] . ' bytes long according to DataLengthIndicator, but found ' . strlen($parsedFrame['data']) . ' bytes of data';
}
}
if (isset($parsedFrame['datalength']) && $parsedFrame['datalength'] == 0) {
$warning = 'Frame "' . $parsedFrame['frame_name'] . '" at offset ' . $parsedFrame['dataoffset'] . ' has no data portion';
switch ($parsedFrame['frame_name']) {
case 'WCOM':
$warning .= ' (this is known to happen with files tagged by RioPort)';
break;
default:
break;
}
$info['warning'][] = $warning;
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'UFID' || $id3v2_majorversion == 2 && $parsedFrame['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>
$exploded = explode("", $parsedFrame['data'], 2);
$parsedFrame['ownerid'] = isset($exploded[0]) ? $exploded[0] : '';
$parsedFrame['data'] = isset($exploded[1]) ? $exploded[1] : '';
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'TXXX' || $id3v2_majorversion == 2 && $parsedFrame['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;
$frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
$info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
}
$frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
++$frame_terminatorpos;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$parsedFrame['encodingid'] = $frame_textencoding;
$parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
$parsedFrame['description'] = $frame_description;
$parsedFrame['data'] = substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)));
if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
$info['id3v2']['comments'][$parsedFrame['framenameshort']][] = trim(Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['data']));
}
//unset($parsedFrame['data']); do not unset, may be needed elsewhere, e.g. for replaygain
} elseif ($parsedFrame['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;
$frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
$info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
}
$parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
$parsedFrame['encodingid'] = $frame_textencoding;
$parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
$string = Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['data']);
$string = rtrim($string, "");
// remove possible terminating null (put by encoding id or software bug)
$info['id3v2']['comments'][$parsedFrame['framenameshort']][] = $string;
unset($string);
}
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'WXXX' || $id3v2_majorversion == 2 && $parsedFrame['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;
$frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
$info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
}
$frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
++$frame_terminatorpos;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$parsedFrame['data'] = substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)));
$frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding));
if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
++$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
$frame_urldata = (string) substr($parsedFrame['data'], 0, $frame_terminatorpos);
} else {
// no null bytes following data, just use all data
$frame_urldata = (string) $parsedFrame['data'];
}
$parsedFrame['encodingid'] = $frame_textencoding;
$parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
$parsedFrame['url'] = $frame_urldata;
$parsedFrame['description'] = $frame_description;
if (!empty($parsedFrame['framenameshort']) && $parsedFrame['url']) {
$info['id3v2']['comments'][$parsedFrame['framenameshort']][] = Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['url']);
}
unset($parsedFrame['data']);
} elseif ($parsedFrame['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>
$parsedFrame['url'] = trim($parsedFrame['data']);
if (!empty($parsedFrame['framenameshort']) && $parsedFrame['url']) {
$info['id3v2']['comments'][$parsedFrame['framenameshort']][] = $parsedFrame['url'];
}
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion == 3 && $parsedFrame['frame_name'] == 'IPLS' || $id3v2_majorversion == 2 && $parsedFrame['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;
$frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
$info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
}
$parsedFrame['encodingid'] = $frame_textencoding;
$parsedFrame['encoding'] = $this->TextEncodingNameLookup($parsedFrame['encodingid']);
$parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
$info['id3v2']['comments'][$parsedFrame['framenameshort']][] = Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['data']);
}
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'MCDI' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'MCI') {
// 4.5 MCI Music CD identifier
// There may only be one 'MCDI' frame in each tag
// <Header for 'Music CD identifier', ID: 'MCDI'>
// CD TOC <binary data>
if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
$info['id3v2']['comments'][$parsedFrame['framenameshort']][] = $parsedFrame['data'];
}
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'ETCO' || $id3v2_majorversion == 2 && $parsedFrame['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;
$parsedFrame['timestampformat'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
while ($frame_offset < strlen($parsedFrame['data'])) {
$parsedFrame['typeid'] = substr($parsedFrame['data'], $frame_offset++, 1);
$parsedFrame['type'] = $this->ETCOEventLookup($parsedFrame['typeid']);
$parsedFrame['timestamp'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 4));
$frame_offset += 4;
}
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'MLLT' || $id3v2_majorversion == 2 && $parsedFrame['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;
$parsedFrame['framesbetweenreferences'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 0, 2));
$parsedFrame['bytesbetweenreferences'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 2, 3));
$parsedFrame['msbetweenreferences'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 5, 3));
$parsedFrame['bitsforbytesdeviation'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 8, 1));
$parsedFrame['bitsformsdeviation'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 9, 1));
$parsedFrame['data'] = substr($parsedFrame['data'], 10);
while ($frame_offset < strlen($parsedFrame['data'])) {
$deviationbitstream .= Helper::BigEndian2Bin(substr($parsedFrame['data'], $frame_offset++, 1));
}
$reference_counter = 0;
while (strlen($deviationbitstream) > 0) {
$parsedFrame[$reference_counter]['bytedeviation'] = bindec(substr($deviationbitstream, 0, $parsedFrame['bitsforbytesdeviation']));
$parsedFrame[$reference_counter]['msdeviation'] = bindec(substr($deviationbitstream, $parsedFrame['bitsforbytesdeviation'], $parsedFrame['bitsformsdeviation']));
$deviationbitstream = substr($deviationbitstream, $parsedFrame['bitsforbytesdeviation'] + $parsedFrame['bitsformsdeviation']);
++$reference_counter;
}
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'SYTC' || $id3v2_majorversion == 2 && $parsedFrame['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;
$parsedFrame['timestampformat'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$timestamp_counter = 0;
while ($frame_offset < strlen($parsedFrame['data'])) {
$parsedFrame[$timestamp_counter]['tempo'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($parsedFrame[$timestamp_counter]['tempo'] == 255) {
$parsedFrame[$timestamp_counter]['tempo'] += ord(substr($parsedFrame['data'], $frame_offset++, 1));
}
$parsedFrame[$timestamp_counter]['timestamp'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 4));
$frame_offset += 4;
++$timestamp_counter;
}
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'USLT' || $id3v2_majorversion == 2 && $parsedFrame['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;
$frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
$info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
}
$frame_language = substr($parsedFrame['data'], $frame_offset, 3);
$frame_offset += 3;
$frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
++$frame_terminatorpos;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$parsedFrame['data'] = substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)));
$parsedFrame['encodingid'] = $frame_textencoding;
$parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
$parsedFrame['data'] = $parsedFrame['data'];
$parsedFrame['language'] = $frame_language;
$parsedFrame['languagename'] = $this->LanguageLookup($frame_language, false);
$parsedFrame['description'] = $frame_description;
if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
$info['id3v2']['comments'][$parsedFrame['framenameshort']][] = Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['data']);
}
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'SYLT' || $id3v2_majorversion == 2 && $parsedFrame['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;
$frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
$info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
}
$frame_language = substr($parsedFrame['data'], $frame_offset, 3);
$frame_offset += 3;
$parsedFrame['timestampformat'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['contenttypeid'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['contenttype'] = $this->SYTLContentTypeLookup($parsedFrame['contenttypeid']);
$parsedFrame['encodingid'] = $frame_textencoding;
$parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
$parsedFrame['language'] = $frame_language;
$parsedFrame['languagename'] = $this->LanguageLookup($frame_language, false);
$timestampindex = 0;
$frame_remainingdata = substr($parsedFrame['data'], $frame_offset);
while (strlen($frame_remainingdata)) {
$frame_offset = 0;
$frame_terminatorpos = strpos($frame_remainingdata, $this->TextEncodingTerminatorLookup($frame_textencoding));
if ($frame_terminatorpos === false) {
$frame_remainingdata = '';
} else {
if (ord(substr($frame_remainingdata, $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
++$frame_terminatorpos;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$parsedFrame['lyrics'][$timestampindex]['data'] = substr($frame_remainingdata, $frame_offset, $frame_terminatorpos - $frame_offset);
$frame_remainingdata = substr($frame_remainingdata, $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)));
if ($timestampindex == 0 && ord($frame_remainingdata[0]) != 0) {
// timestamp probably omitted for first data item
} else {
$parsedFrame['lyrics'][$timestampindex]['timestamp'] = Helper::BigEndian2Int(substr($frame_remainingdata, 0, 4));
$frame_remainingdata = substr($frame_remainingdata, 4);
}
++$timestampindex;
}
}
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'COMM' || $id3v2_majorversion == 2 && $parsedFrame['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> $00 (00)
// The actual text <full text string according to encoding>
if (strlen($parsedFrame['data']) < 5) {
$info['warning'][] = 'Invalid data (too short) for "' . $parsedFrame['frame_name'] . '" frame at offset ' . $parsedFrame['dataoffset'];
} else {
$frame_offset = 0;
$frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
$info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
}
$frame_language = substr($parsedFrame['data'], $frame_offset, 3);
$frame_offset += 3;
$frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
++$frame_terminatorpos;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$frame_text = (string) substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)));
$parsedFrame['encodingid'] = $frame_textencoding;
$parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
$parsedFrame['language'] = $frame_language;
$parsedFrame['languagename'] = $this->LanguageLookup($frame_language, false);
$parsedFrame['description'] = $frame_description;
$parsedFrame['data'] = $frame_text;
if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
$info['id3v2']['comments'][$parsedFrame['framenameshort']][] = Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['data']);
}
}
} elseif ($id3v2_majorversion >= 4 && $parsedFrame['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 ...)
$frame_terminatorpos = strpos($parsedFrame['data'], "");
$frame_idstring = substr($parsedFrame['data'], 0, $frame_terminatorpos);
if (ord($frame_idstring) === 0) {
$frame_idstring = '';
}
$frame_remainingdata = substr($parsedFrame['data'], $frame_terminatorpos + strlen(""));
$parsedFrame['description'] = $frame_idstring;
$RVA2channelcounter = 0;
while (strlen($frame_remainingdata) >= 5) {
$frame_offset = 0;
$frame_channeltypeid = ord(substr($frame_remainingdata, $frame_offset++, 1));
$parsedFrame[$RVA2channelcounter]['channeltypeid'] = $frame_channeltypeid;
$parsedFrame[$RVA2channelcounter]['channeltype'] = $this->RVA2ChannelTypeLookup($frame_channeltypeid);
$parsedFrame[$RVA2channelcounter]['volumeadjust'] = Helper::BigEndian2Int(substr($frame_remainingdata, $frame_offset, 2), false, true);
// 16-bit signed
$frame_offset += 2;
$parsedFrame[$RVA2channelcounter]['bitspeakvolume'] = ord(substr($frame_remainingdata, $frame_offset++, 1));
if ($parsedFrame[$RVA2channelcounter]['bitspeakvolume'] < 1 || $parsedFrame[$RVA2channelcounter]['bitspeakvolume'] > 4) {
$info['warning'][] = 'ID3v2::RVA2 frame[' . $RVA2channelcounter . '] contains invalid ' . $parsedFrame[$RVA2channelcounter]['bitspeakvolume'] . '-byte bits-representing-peak value';
break;
}
$frame_bytespeakvolume = ceil($parsedFrame[$RVA2channelcounter]['bitspeakvolume'] / 8);
$parsedFrame[$RVA2channelcounter]['peakvolume'] = Helper::BigEndian2Int(substr($frame_remainingdata, $frame_offset, $frame_bytespeakvolume));
$frame_remainingdata = substr($frame_remainingdata, $frame_offset + $frame_bytespeakvolume);
++$RVA2channelcounter;
}
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion == 3 && $parsedFrame['frame_name'] == 'RVAD' || $id3v2_majorversion == 2 && $parsedFrame['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;
$frame_incrdecrflags = Helper::BigEndian2Bin(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['incdec']['right'] = (bool) substr($frame_incrdecrflags, 6, 1);
$parsedFrame['incdec']['left'] = (bool) substr($frame_incrdecrflags, 7, 1);
$parsedFrame['bitsvolume'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$frame_bytesvolume = ceil($parsedFrame['bitsvolume'] / 8);
$parsedFrame['volumechange']['right'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
if ($parsedFrame['incdec']['right'] === false) {
$parsedFrame['volumechange']['right'] *= -1;
}
$frame_offset += $frame_bytesvolume;
$parsedFrame['volumechange']['left'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
if ($parsedFrame['incdec']['left'] === false) {
$parsedFrame['volumechange']['left'] *= -1;
}
$frame_offset += $frame_bytesvolume;
$parsedFrame['peakvolume']['right'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
$frame_offset += $frame_bytesvolume;
$parsedFrame['peakvolume']['left'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
$frame_offset += $frame_bytesvolume;
if ($id3v2_majorversion == 3) {
$parsedFrame['data'] = substr($parsedFrame['data'], $frame_offset);
if (strlen($parsedFrame['data']) > 0) {
$parsedFrame['incdec']['rightrear'] = (bool) substr($frame_incrdecrflags, 4, 1);
$parsedFrame['incdec']['leftrear'] = (bool) substr($frame_incrdecrflags, 5, 1);
$parsedFrame['volumechange']['rightrear'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
if ($parsedFrame['incdec']['rightrear'] === false) {
$parsedFrame['volumechange']['rightrear'] *= -1;
}
$frame_offset += $frame_bytesvolume;
$parsedFrame['volumechange']['leftrear'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
if ($parsedFrame['incdec']['leftrear'] === false) {
$parsedFrame['volumechange']['leftrear'] *= -1;
}
$frame_offset += $frame_bytesvolume;
$parsedFrame['peakvolume']['rightrear'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
$frame_offset += $frame_bytesvolume;
$parsedFrame['peakvolume']['leftrear'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
$frame_offset += $frame_bytesvolume;
}
$parsedFrame['data'] = substr($parsedFrame['data'], $frame_offset);
if (strlen($parsedFrame['data']) > 0) {
$parsedFrame['incdec']['center'] = (bool) substr($frame_incrdecrflags, 3, 1);
$parsedFrame['volumechange']['center'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
if ($parsedFrame['incdec']['center'] === false) {
$parsedFrame['volumechange']['center'] *= -1;
}
$frame_offset += $frame_bytesvolume;
$parsedFrame['peakvolume']['center'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
$frame_offset += $frame_bytesvolume;
}
$parsedFrame['data'] = substr($parsedFrame['data'], $frame_offset);
if (strlen($parsedFrame['data']) > 0) {
$parsedFrame['incdec']['bass'] = (bool) substr($frame_incrdecrflags, 2, 1);
$parsedFrame['volumechange']['bass'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
if ($parsedFrame['incdec']['bass'] === false) {
$parsedFrame['volumechange']['bass'] *= -1;
}
$frame_offset += $frame_bytesvolume;
$parsedFrame['peakvolume']['bass'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
$frame_offset += $frame_bytesvolume;
}
}
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 4 && $parsedFrame['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;
$frame_interpolationmethod = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_idstring = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_idstring) === 0) {
$frame_idstring = '';
}
$parsedFrame['description'] = $frame_idstring;
$frame_remainingdata = substr($parsedFrame['data'], $frame_terminatorpos + strlen(""));
while (strlen($frame_remainingdata)) {
$frame_frequency = Helper::BigEndian2Int(substr($frame_remainingdata, 0, 2)) / 2;
$parsedFrame['data'][$frame_frequency] = Helper::BigEndian2Int(substr($frame_remainingdata, 2, 2), false, true);
$frame_remainingdata = substr($frame_remainingdata, 4);
}
$parsedFrame['interpolationmethod'] = $frame_interpolationmethod;
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion == 3 && $parsedFrame['frame_name'] == 'EQUA' || $id3v2_majorversion == 2 && $parsedFrame['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;
$parsedFrame['adjustmentbits'] = substr($parsedFrame['data'], $frame_offset++, 1);
$frame_adjustmentbytes = ceil($parsedFrame['adjustmentbits'] / 8);
$frame_remainingdata = (string) substr($parsedFrame['data'], $frame_offset);
while (strlen($frame_remainingdata) > 0) {
$frame_frequencystr = Helper::BigEndian2Bin(substr($frame_remainingdata, 0, 2));
$frame_incdec = (bool) substr($frame_frequencystr, 0, 1);
$frame_frequency = bindec(substr($frame_frequencystr, 1, 15));
$parsedFrame[$frame_frequency]['incdec'] = $frame_incdec;
$parsedFrame[$frame_frequency]['adjustment'] = Helper::BigEndian2Int(substr($frame_remainingdata, 2, $frame_adjustmentbytes));
if ($parsedFrame[$frame_frequency]['incdec'] === false) {
$parsedFrame[$frame_frequency]['adjustment'] *= -1;
}
$frame_remainingdata = substr($frame_remainingdata, 2 + $frame_adjustmentbytes);
}
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'RVRB' || $id3v2_majorversion == 2 && $parsedFrame['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;
$parsedFrame['left'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 2));
$frame_offset += 2;
$parsedFrame['right'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 2));
$frame_offset += 2;
$parsedFrame['bouncesL'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['bouncesR'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['feedbackLL'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['feedbackLR'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['feedbackRR'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['feedbackRL'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['premixLR'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['premixRL'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'APIC' || $id3v2_majorversion == 2 && $parsedFrame['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;
$frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
$info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
}
if ($id3v2_majorversion == 2 && strlen($parsedFrame['data']) > $frame_offset) {
$frame_imagetype = substr($parsedFrame['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 xbhoffØpacbell*net)
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_mimetype = substr($parsedFrame['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("");
} else {
$frame_offset += 3;
}
}
if ($id3v2_majorversion > 2 && strlen($parsedFrame['data']) > $frame_offset) {
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_mimetype = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_mimetype) === 0) {
$frame_mimetype = '';
}
$frame_offset = $frame_terminatorpos + strlen("");
}
$frame_picturetype = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($frame_offset >= $parsedFrame['datalength']) {
$info['warning'][] = 'data portion of APIC frame is missing at offset ' . ($parsedFrame['dataoffset'] + 8 + $frame_offset);
} else {
$frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
++$frame_terminatorpos;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$parsedFrame['encodingid'] = $frame_textencoding;
$parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
if ($id3v2_majorversion == 2) {
$parsedFrame['imagetype'] = $frame_imagetype;
} else {
$parsedFrame['mime'] = $frame_mimetype;
}
$parsedFrame['picturetypeid'] = $frame_picturetype;
$parsedFrame['picturetype'] = $this->APICPictureTypeLookup($frame_picturetype);
$parsedFrame['description'] = $frame_description;
$parsedFrame['data'] = substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)));
$parsedFrame['datalength'] = strlen($parsedFrame['data']);
$parsedFrame['image_mime'] = '';
$imageinfo = array();
$imagechunkcheck = Helper::GetDataImageSize($parsedFrame['data'], $imageinfo);
if ($imagechunkcheck[2] >= 1 && $imagechunkcheck[2] <= 3) {
$parsedFrame['image_mime'] = 'image/' . Helper::ImageTypesLookup($imagechunkcheck[2]);
if ($imagechunkcheck[0]) {
$parsedFrame['image_width'] = $imagechunkcheck[0];
}
if ($imagechunkcheck[1]) {
$parsedFrame['image_height'] = $imagechunkcheck[1];
}
}
do {
if ($this->inline_attachments === false) {
// skip entirely
unset($parsedFrame['data']);
break;
}
if ($this->inline_attachments === true) {
// great
} elseif (is_int($this->inline_attachments)) {
if ($this->inline_attachments < $parsedFrame['data_length']) {
// too big, skip
$info['warning'][] = 'attachment at ' . $frame_offset . ' is too large to process inline (' . number_format($parsedFrame['data_length']) . ' bytes)';
unset($parsedFrame['data']);
break;
}
} elseif (is_string($this->inline_attachments)) {
$this->inline_attachments = rtrim(str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $this->inline_attachments), DIRECTORY_SEPARATOR);
if (!is_dir($this->inline_attachments) || !is_writable($this->inline_attachments)) {
// cannot write, skip
$info['warning'][] = 'attachment at ' . $frame_offset . ' cannot be saved to "' . $this->inline_attachments . '" (not writable)';
unset($parsedFrame['data']);
break;
}
}
// if we get this far, must be OK
if (is_string($this->inline_attachments)) {
$destination_filename = $this->inline_attachments . DIRECTORY_SEPARATOR . md5($info['filenamepath']) . '_' . $frame_offset;
if (!file_exists($destination_filename) || is_writable($destination_filename)) {
file_put_contents($destination_filename, $parsedFrame['data']);
} else {
$info['warning'][] = 'attachment at ' . $frame_offset . ' cannot be saved to "' . $destination_filename . '" (not writable)';
}
$parsedFrame['data_filename'] = $destination_filename;
unset($parsedFrame['data']);
} else {
if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
if (!isset($info['id3v2']['comments']['picture'])) {
$info['id3v2']['comments']['picture'] = array();
}
$info['id3v2']['comments']['picture'][] = array('data' => $parsedFrame['data'], 'image_mime' => $parsedFrame['image_mime']);
}
}
} while (false);
}
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'GEOB' || $id3v2_majorversion == 2 && $parsedFrame['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;
$frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
$info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
}
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_mimetype = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_mimetype) === 0) {
$frame_mimetype = '';
}
$frame_offset = $frame_terminatorpos + strlen("");
$frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
++$frame_terminatorpos;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_filename = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_filename) === 0) {
$frame_filename = '';
}
$frame_offset = $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding));
$frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
++$frame_terminatorpos;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$frame_offset = $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding));
$parsedFrame['objectdata'] = (string) substr($parsedFrame['data'], $frame_offset);
$parsedFrame['encodingid'] = $frame_textencoding;
$parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
$parsedFrame['mime'] = $frame_mimetype;
$parsedFrame['filename'] = $frame_filename;
$parsedFrame['description'] = $frame_description;
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'PCNT' || $id3v2_majorversion == 2 && $parsedFrame['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 ...)
$parsedFrame['data'] = Helper::BigEndian2Int($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'POPM' || $id3v2_majorversion == 2 && $parsedFrame['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;
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_emailaddress = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_emailaddress) === 0) {
$frame_emailaddress = '';
}
$frame_offset = $frame_terminatorpos + strlen("");
$frame_rating = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['counter'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset));
$parsedFrame['email'] = $frame_emailaddress;
$parsedFrame['rating'] = $frame_rating;
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'RBUF' || $id3v2_majorversion == 2 && $parsedFrame['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;
$parsedFrame['buffersize'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 3));
$frame_offset += 3;
$frame_embeddedinfoflags = Helper::BigEndian2Bin(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['flags']['embededinfo'] = (bool) substr($frame_embeddedinfoflags, 7, 1);
$parsedFrame['nexttagoffset'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 4));
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion == 2 && $parsedFrame['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;
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_ownerid = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
$frame_offset = $frame_terminatorpos + strlen("");
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$frame_offset = $frame_terminatorpos + strlen("");
$parsedFrame['ownerid'] = $frame_ownerid;
$parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
$parsedFrame['description'] = $frame_description;
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'AENC' || $id3v2_majorversion == 2 && $parsedFrame['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;
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_ownerid = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_ownerid) === 0) {
$frame_ownerid == '';
}
$frame_offset = $frame_terminatorpos + strlen("");
$parsedFrame['ownerid'] = $frame_ownerid;
$parsedFrame['previewstart'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 2));
$frame_offset += 2;
$parsedFrame['previewlength'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 2));
$frame_offset += 2;
$parsedFrame['encryptioninfo'] = (string) substr($parsedFrame['data'], $frame_offset);
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'LINK' || $id3v2_majorversion == 2 && $parsedFrame['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)>
$frame_offset = 0;
if ($id3v2_majorversion == 2) {
$parsedFrame['frameid'] = substr($parsedFrame['data'], $frame_offset, 3);
$frame_offset += 3;
} else {
$parsedFrame['frameid'] = substr($parsedFrame['data'], $frame_offset, 4);
$frame_offset += 4;
}
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_url = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_url) === 0) {
$frame_url = '';
}
$frame_offset = $frame_terminatorpos + strlen("");
$parsedFrame['url'] = $frame_url;
$parsedFrame['additionaldata'] = (string) substr($parsedFrame['data'], $frame_offset);
if (!empty($parsedFrame['framenameshort']) && $parsedFrame['url']) {
$info['id3v2']['comments'][$parsedFrame['framenameshort']][] = utf8_encode($parsedFrame['url']);
}
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['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;
$parsedFrame['timestampformat'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['position'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset));
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['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;
$frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
$info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
}
$frame_language = substr($parsedFrame['data'], $frame_offset, 3);
$frame_offset += 3;
$parsedFrame['language'] = $frame_language;
$parsedFrame['languagename'] = $this->LanguageLookup($frame_language, false);
$parsedFrame['encodingid'] = $frame_textencoding;
$parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
$parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
$info['id3v2']['comments'][$parsedFrame['framenameshort']][] = Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['data']);
}
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['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;
$frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
$info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
}
$parsedFrame['encodingid'] = $frame_textencoding;
$parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_pricepaid = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
$frame_offset = $frame_terminatorpos + strlen("");
$parsedFrame['pricepaid']['currencyid'] = substr($frame_pricepaid, 0, 3);
$parsedFrame['pricepaid']['currency'] = $this->LookupCurrencyUnits($parsedFrame['pricepaid']['currencyid']);
$parsedFrame['pricepaid']['value'] = substr($frame_pricepaid, 3);
$parsedFrame['purchasedate'] = substr($parsedFrame['data'], $frame_offset, 8);
if (!$this->IsValidDateStampString($parsedFrame['purchasedate'])) {
$parsedFrame['purchasedateunix'] = mktime(0, 0, 0, substr($parsedFrame['purchasedate'], 4, 2), substr($parsedFrame['purchasedate'], 6, 2), substr($parsedFrame['purchasedate'], 0, 4));
}
$frame_offset += 8;
$parsedFrame['seller'] = (string) substr($parsedFrame['data'], $frame_offset);
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['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;
$frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
$info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
}
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_pricestring = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
$frame_offset = $frame_terminatorpos + strlen("");
$frame_rawpricearray = explode('/', $frame_pricestring);
foreach ($frame_rawpricearray as $key => $val) {
$frame_currencyid = substr($val, 0, 3);
$parsedFrame['price'][$frame_currencyid]['currency'] = $this->LookupCurrencyUnits($frame_currencyid);
$parsedFrame['price'][$frame_currencyid]['value'] = substr($val, 3);
}
$frame_datestring = substr($parsedFrame['data'], $frame_offset, 8);
$frame_offset += 8;
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_contacturl = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
$frame_offset = $frame_terminatorpos + strlen("");
$frame_receivedasid = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
++$frame_terminatorpos;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_sellername = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_sellername) === 0) {
$frame_sellername = '';
}
$frame_offset = $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding));
$frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
++$frame_terminatorpos;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$frame_offset = $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding));
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_mimetype = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
$frame_offset = $frame_terminatorpos + strlen("");
$frame_sellerlogo = substr($parsedFrame['data'], $frame_offset);
$parsedFrame['encodingid'] = $frame_textencoding;
$parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
$parsedFrame['pricevaliduntil'] = $frame_datestring;
$parsedFrame['contacturl'] = $frame_contacturl;
$parsedFrame['receivedasid'] = $frame_receivedasid;
$parsedFrame['receivedas'] = $this->COMRReceivedAsLookup($frame_receivedasid);
$parsedFrame['sellername'] = $frame_sellername;
$parsedFrame['description'] = $frame_description;
$parsedFrame['mime'] = $frame_mimetype;
$parsedFrame['logo'] = $frame_sellerlogo;
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['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;
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_ownerid = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_ownerid) === 0) {
$frame_ownerid = '';
}
$frame_offset = $frame_terminatorpos + strlen("");
$parsedFrame['ownerid'] = $frame_ownerid;
$parsedFrame['methodsymbol'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['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;
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_ownerid = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_ownerid) === 0) {
$frame_ownerid = '';
}
$frame_offset = $frame_terminatorpos + strlen("");
$parsedFrame['ownerid'] = $frame_ownerid;
$parsedFrame['groupsymbol'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['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;
$frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
$frame_ownerid = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_ownerid) === 0) {
$frame_ownerid = '';
}
$frame_offset = $frame_terminatorpos + strlen("");
$parsedFrame['ownerid'] = $frame_ownerid;
$parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
} elseif ($id3v2_majorversion >= 4 && $parsedFrame['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;
$parsedFrame['groupsymbol'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
} elseif ($id3v2_majorversion >= 4 && $parsedFrame['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;
$parsedFrame['data'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 4));
} elseif ($id3v2_majorversion >= 4 && $parsedFrame['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;
$parsedFrame['datastart'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 4));
$frame_offset += 4;
$parsedFrame['indexeddatalength'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 4));
$frame_offset += 4;
$parsedFrame['indexpoints'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 2));
$frame_offset += 2;
$parsedFrame['bitsperpoint'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
$frame_bytesperpoint = ceil($parsedFrame['bitsperpoint'] / 8);
for ($i = 0; $i < $frame_indexpoints; ++$i) {
$parsedFrame['indexes'][$i] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesperpoint));
$frame_offset += $frame_bytesperpoint;
}
unset($parsedFrame['data']);
} elseif ($id3v2_majorversion >= 3 && $parsedFrame['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;
$parsedFrame['peakamplitude'] = Helper::BigEndian2Float(substr($parsedFrame['data'], $frame_offset, 4));
$frame_offset += 4;
$rg_track_adjustment = Helper::Dec2Bin(substr($parsedFrame['data'], $frame_offset, 2));
$frame_offset += 2;
$rg_album_adjustment = Helper::Dec2Bin(substr($parsedFrame['data'], $frame_offset, 2));
$frame_offset += 2;
$parsedFrame['raw']['track']['name'] = Helper::Bin2Dec(substr($rg_track_adjustment, 0, 3));
$parsedFrame['raw']['track']['originator'] = Helper::Bin2Dec(substr($rg_track_adjustment, 3, 3));
$parsedFrame['raw']['track']['signbit'] = Helper::Bin2Dec(substr($rg_track_adjustment, 6, 1));
$parsedFrame['raw']['track']['adjustment'] = Helper::Bin2Dec(substr($rg_track_adjustment, 7, 9));
$parsedFrame['raw']['album']['name'] = Helper::Bin2Dec(substr($rg_album_adjustment, 0, 3));
$parsedFrame['raw']['album']['originator'] = Helper::Bin2Dec(substr($rg_album_adjustment, 3, 3));
$parsedFrame['raw']['album']['signbit'] = Helper::Bin2Dec(substr($rg_album_adjustment, 6, 1));
$parsedFrame['raw']['album']['adjustment'] = Helper::Bin2Dec(substr($rg_album_adjustment, 7, 9));
$parsedFrame['track']['name'] = Helper::RGADnameLookup($parsedFrame['raw']['track']['name']);
$parsedFrame['track']['originator'] = Helper::RGADoriginatorLookup($parsedFrame['raw']['track']['originator']);
$parsedFrame['track']['adjustment'] = Helper::RGADadjustmentLookup($parsedFrame['raw']['track']['adjustment'], $parsedFrame['raw']['track']['signbit']);
$parsedFrame['album']['name'] = Helper::RGADnameLookup($parsedFrame['raw']['album']['name']);
$parsedFrame['album']['originator'] = Helper::RGADoriginatorLookup($parsedFrame['raw']['album']['originator']);
$parsedFrame['album']['adjustment'] = Helper::RGADadjustmentLookup($parsedFrame['raw']['album']['adjustment'], $parsedFrame['raw']['album']['signbit']);
$info['replay_gain']['track']['peak'] = $parsedFrame['peakamplitude'];
$info['replay_gain']['track']['originator'] = $parsedFrame['track']['originator'];
$info['replay_gain']['track']['adjustment'] = $parsedFrame['track']['adjustment'];
$info['replay_gain']['album']['originator'] = $parsedFrame['album']['originator'];
$info['replay_gain']['album']['adjustment'] = $parsedFrame['album']['adjustment'];
unset($parsedFrame['data']);
}
return true;
}
/**
* @return bool
*/
public function analyze()
{
$info =& $this->getid3->info;
///AH
$info['ac3']['raw']['bsi'] = array();
$thisfile_ac3 =& $info['ac3'];
$thisfile_ac3_raw =& $thisfile_ac3['raw'];
$thisfile_ac3_raw_bsi =& $thisfile_ac3_raw['bsi'];
// http://www.atsc.org/standards/a_52a.pdf
$info['fileformat'] = 'ac3';
// An AC-3 serial coded audio bit stream is made up of a sequence of synchronization frames
// Each synchronization frame contains 6 coded audio blocks (AB), each of which represent 256
// new audio samples per channel. A synchronization information (SI) header at the beginning
// of each frame contains information needed to acquire and maintain synchronization. A
// bit stream information (BSI) header follows SI, and contains parameters describing the coded
// audio service. The coded audio blocks may be followed by an auxiliary data (Aux) field. At the
// end of each frame is an error check field that includes a CRC word for error detection. An
// additional CRC word is located in the SI header, the use of which, by a decoder, is optional.
//
// syncinfo() | bsi() | AB0 | AB1 | AB2 | AB3 | AB4 | AB5 | Aux | CRC
// syncinfo() {
// syncword 16
// crc1 16
// fscod 2
// frmsizecod 6
// } /* end of syncinfo */
$this->fseek($info['avdataoffset']);
$this->AC3header['syncinfo'] = $this->fread(5);
$magic = "\vw";
if (strpos($this->AC3header['syncinfo'], $magic) === 0) {
$thisfile_ac3_raw['synchinfo']['synchword'] = $magic;
$offset = 2;
} else {
if (!$this->isDependencyFor('matroska')) {
unset($info['fileformat'], $info['ac3']);
return $this->error('Expecting "' . Helper::PrintHexBytes($magic) . '" at offset ' . $info['avdataoffset'] . ', found "' . Helper::PrintHexBytes(substr($this->AC3header['syncinfo'], 0, 2)) . '"');
}
$offset = 0;
$this->fseek(-2, SEEK_CUR);
}
$info['audio']['dataformat'] = 'ac3';
$info['audio']['bitrate_mode'] = 'cbr';
$info['audio']['lossless'] = false;
$thisfile_ac3_raw['synchinfo']['crc1'] = Helper::LittleEndian2Int(substr($this->AC3header['syncinfo'], $offset, 2));
$ac3_synchinfo_fscod_frmsizecod = Helper::LittleEndian2Int(substr($this->AC3header['syncinfo'], $offset + 2, 1));
$thisfile_ac3_raw['synchinfo']['fscod'] = ($ac3_synchinfo_fscod_frmsizecod & 0xc0) >> 6;
$thisfile_ac3_raw['synchinfo']['frmsizecod'] = $ac3_synchinfo_fscod_frmsizecod & 0x3f;
$thisfile_ac3['sample_rate'] = self::sampleRateCodeLookup($thisfile_ac3_raw['synchinfo']['fscod']);
if ($thisfile_ac3_raw['synchinfo']['fscod'] <= 3) {
$info['audio']['sample_rate'] = $thisfile_ac3['sample_rate'];
}
$thisfile_ac3['frame_length'] = self::frameSizeLookup($thisfile_ac3_raw['synchinfo']['frmsizecod'], $thisfile_ac3_raw['synchinfo']['fscod']);
$thisfile_ac3['bitrate'] = self::bitrateLookup($thisfile_ac3_raw['synchinfo']['frmsizecod']);
$info['audio']['bitrate'] = $thisfile_ac3['bitrate'];
$this->AC3header['bsi'] = Helper::BigEndian2Bin($this->fread(15));
$ac3_bsi_offset = 0;
$thisfile_ac3_raw_bsi['bsid'] = $this->readHeaderBSI(5);
if ($thisfile_ac3_raw_bsi['bsid'] > 8) {
// Decoders which can decode version 8 will thus be able to decode version numbers less than 8.
// If this standard is extended by the addition of additional elements or features, a value of bsid greater than 8 will be used.
// Decoders built to this version of the standard will not be able to decode versions with bsid greater than 8.
$this->error('Bit stream identification is version ' . $thisfile_ac3_raw_bsi['bsid'] . ', but GetId3Core() only understands up to version 8');
unset($info['ac3']);
return false;
}
$thisfile_ac3_raw_bsi['bsmod'] = $this->readHeaderBSI(3);
$thisfile_ac3_raw_bsi['acmod'] = $this->readHeaderBSI(3);
$thisfile_ac3['service_type'] = self::serviceTypeLookup($thisfile_ac3_raw_bsi['bsmod'], $thisfile_ac3_raw_bsi['acmod']);
$ac3_coding_mode = self::audioCodingModeLookup($thisfile_ac3_raw_bsi['acmod']);
foreach ($ac3_coding_mode as $key => $value) {
$thisfile_ac3[$key] = $value;
}
switch ($thisfile_ac3_raw_bsi['acmod']) {
case 0:
case 1:
$info['audio']['channelmode'] = 'mono';
break;
case 3:
case 4:
$info['audio']['channelmode'] = 'stereo';
break;
default:
$info['audio']['channelmode'] = 'surround';
break;
}
$info['audio']['channels'] = $thisfile_ac3['num_channels'];
if ($thisfile_ac3_raw_bsi['acmod'] & 0x1) {
// If the lsb of acmod is a 1, center channel is in use and cmixlev follows in the bit stream.
$thisfile_ac3_raw_bsi['cmixlev'] = $this->readHeaderBSI(2);
$thisfile_ac3['center_mix_level'] = self::centerMixLevelLookup($thisfile_ac3_raw_bsi['cmixlev']);
}
if ($thisfile_ac3_raw_bsi['acmod'] & 0x4) {
// If the msb of acmod is a 1, surround channels are in use and surmixlev follows in the bit stream.
$thisfile_ac3_raw_bsi['surmixlev'] = $this->readHeaderBSI(2);
$thisfile_ac3['surround_mix_level'] = self::surroundMixLevelLookup($thisfile_ac3_raw_bsi['surmixlev']);
}
if ($thisfile_ac3_raw_bsi['acmod'] == 0x2) {
// When operating in the two channel mode, this 2-bit code indicates whether or not the program has been encoded in Dolby Surround.
$thisfile_ac3_raw_bsi['dsurmod'] = $this->readHeaderBSI(2);
$thisfile_ac3['dolby_surround_mode'] = self::dolbySurroundModeLookup($thisfile_ac3_raw_bsi['dsurmod']);
}
$thisfile_ac3_raw_bsi['lfeon'] = (bool) $this->readHeaderBSI(1);
$thisfile_ac3['lfe_enabled'] = $thisfile_ac3_raw_bsi['lfeon'];
if ($thisfile_ac3_raw_bsi['lfeon']) {
//$info['audio']['channels']++;
$info['audio']['channels'] .= '.1';
}
$thisfile_ac3['channels_enabled'] = self::channelsEnabledLookup($thisfile_ac3_raw_bsi['acmod'], $thisfile_ac3_raw_bsi['lfeon']);
// This indicates how far the average dialogue level is below digital 100 percent. Valid values are 1–31.
// The value of 0 is reserved. The values of 1 to 31 are interpreted as -1 dB to -31 dB with respect to digital 100 percent.
$thisfile_ac3_raw_bsi['dialnorm'] = $this->readHeaderBSI(5);
$thisfile_ac3['dialogue_normalization'] = '-' . $thisfile_ac3_raw_bsi['dialnorm'] . 'dB';
$thisfile_ac3_raw_bsi['compre_flag'] = (bool) $this->readHeaderBSI(1);
if ($thisfile_ac3_raw_bsi['compre_flag']) {
$thisfile_ac3_raw_bsi['compr'] = $this->readHeaderBSI(8);
$thisfile_ac3['heavy_compression'] = self::heavyCompression($thisfile_ac3_raw_bsi['compr']);
}
$thisfile_ac3_raw_bsi['langcode_flag'] = (bool) $this->readHeaderBSI(1);
if ($thisfile_ac3_raw_bsi['langcode_flag']) {
$thisfile_ac3_raw_bsi['langcod'] = $this->readHeaderBSI(8);
}
$thisfile_ac3_raw_bsi['audprodie'] = (bool) $this->readHeaderBSI(1);
if ($thisfile_ac3_raw_bsi['audprodie']) {
$thisfile_ac3_raw_bsi['mixlevel'] = $this->readHeaderBSI(5);
$thisfile_ac3_raw_bsi['roomtyp'] = $this->readHeaderBSI(2);
$thisfile_ac3['mixing_level'] = 80 + $thisfile_ac3_raw_bsi['mixlevel'] . 'dB';
$thisfile_ac3['room_type'] = self::roomTypeLookup($thisfile_ac3_raw_bsi['roomtyp']);
}
if ($thisfile_ac3_raw_bsi['acmod'] == 0x0) {
// If acmod is 0, then two completely independent program channels (dual mono)
// are encoded into the bit stream, and are referenced as Ch1, Ch2. In this case,
// a number of additional items are present in BSI or audblk to fully describe Ch2.
// This indicates how far the average dialogue level is below digital 100 percent. Valid values are 1–31.
// The value of 0 is reserved. The values of 1 to 31 are interpreted as -1 dB to -31 dB with respect to digital 100 percent.
$thisfile_ac3_raw_bsi['dialnorm2'] = $this->readHeaderBSI(5);
$thisfile_ac3['dialogue_normalization2'] = '-' . $thisfile_ac3_raw_bsi['dialnorm2'] . 'dB';
$thisfile_ac3_raw_bsi['compre_flag2'] = (bool) $this->readHeaderBSI(1);
if ($thisfile_ac3_raw_bsi['compre_flag2']) {
$thisfile_ac3_raw_bsi['compr2'] = $this->readHeaderBSI(8);
$thisfile_ac3['heavy_compression2'] = self::heavyCompression($thisfile_ac3_raw_bsi['compr2']);
}
$thisfile_ac3_raw_bsi['langcode_flag2'] = (bool) $this->readHeaderBSI(1);
if ($thisfile_ac3_raw_bsi['langcode_flag2']) {
$thisfile_ac3_raw_bsi['langcod2'] = $this->readHeaderBSI(8);
}
$thisfile_ac3_raw_bsi['audprodie2'] = (bool) $this->readHeaderBSI(1);
if ($thisfile_ac3_raw_bsi['audprodie2']) {
$thisfile_ac3_raw_bsi['mixlevel2'] = $this->readHeaderBSI(5);
$thisfile_ac3_raw_bsi['roomtyp2'] = $this->readHeaderBSI(2);
$thisfile_ac3['mixing_level2'] = 80 + $thisfile_ac3_raw_bsi['mixlevel2'] . 'dB';
$thisfile_ac3['room_type2'] = self::roomTypeLookup($thisfile_ac3_raw_bsi['roomtyp2']);
}
}
$thisfile_ac3_raw_bsi['copyright'] = (bool) $this->readHeaderBSI(1);
$thisfile_ac3_raw_bsi['original'] = (bool) $this->readHeaderBSI(1);
$thisfile_ac3_raw_bsi['timecode1_flag'] = (bool) $this->readHeaderBSI(1);
if ($thisfile_ac3_raw_bsi['timecode1_flag']) {
$thisfile_ac3_raw_bsi['timecode1'] = $this->readHeaderBSI(14);
}
$thisfile_ac3_raw_bsi['timecode2_flag'] = (bool) $this->readHeaderBSI(1);
if ($thisfile_ac3_raw_bsi['timecode2_flag']) {
$thisfile_ac3_raw_bsi['timecode2'] = $this->readHeaderBSI(14);
}
$thisfile_ac3_raw_bsi['addbsi_flag'] = (bool) $this->readHeaderBSI(1);
if ($thisfile_ac3_raw_bsi['addbsi_flag']) {
$thisfile_ac3_raw_bsi['addbsi_length'] = $this->readHeaderBSI(6);
$this->AC3header['bsi'] .= Helper::BigEndian2Bin($this->fread($thisfile_ac3_raw_bsi['addbsi_length']));
$thisfile_ac3_raw_bsi['addbsi_data'] = substr($this->AC3header['bsi'], $this->BSIoffset, $thisfile_ac3_raw_bsi['addbsi_length'] * 8);
$this->BSIoffset += $thisfile_ac3_raw_bsi['addbsi_length'] * 8;
}
return true;
}
/**
* @param type $BlockData
*
* @return bool
*/
private function parseSTREAMINFO($BlockData)
{
$info =& $this->getid3->info;
$info['flac']['STREAMINFO'] = array();
$streaminfo =& $info['flac']['STREAMINFO'];
$streaminfo['min_block_size'] = Helper::BigEndian2Int(substr($BlockData, 0, 2));
$streaminfo['max_block_size'] = Helper::BigEndian2Int(substr($BlockData, 2, 2));
$streaminfo['min_frame_size'] = Helper::BigEndian2Int(substr($BlockData, 4, 3));
$streaminfo['max_frame_size'] = Helper::BigEndian2Int(substr($BlockData, 7, 3));
$SRCSBSS = Helper::BigEndian2Bin(substr($BlockData, 10, 8));
$streaminfo['sample_rate'] = Helper::Bin2Dec(substr($SRCSBSS, 0, 20));
$streaminfo['channels'] = Helper::Bin2Dec(substr($SRCSBSS, 20, 3)) + 1;
$streaminfo['bits_per_sample'] = Helper::Bin2Dec(substr($SRCSBSS, 23, 5)) + 1;
$streaminfo['samples_stream'] = Helper::Bin2Dec(substr($SRCSBSS, 28, 36));
$streaminfo['audio_signature'] = substr($BlockData, 18, 16);
if (!empty($streaminfo['sample_rate'])) {
$info['audio']['bitrate_mode'] = 'vbr';
$info['audio']['sample_rate'] = $streaminfo['sample_rate'];
$info['audio']['channels'] = $streaminfo['channels'];
$info['audio']['bits_per_sample'] = $streaminfo['bits_per_sample'];
$info['playtime_seconds'] = $streaminfo['samples_stream'] / $streaminfo['sample_rate'];
if ($info['playtime_seconds'] > 0) {
if (!$this->isDependencyFor('matroska')) {
$info['audio']['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['playtime_seconds'];
} else {
$this->warning('Cannot determine audio bitrate because total stream size is unknown');
}
}
} else {
return $this->error('Corrupt METAdata block: STREAMINFO');
}
return true;
}
/**
* @return bool
*/
public function getAACADIFheaderFilepointer()
{
$info =& $this->getid3->info;
$info['fileformat'] = 'aac';
$info['audio']['dataformat'] = 'aac';
$info['audio']['lossless'] = false;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$AACheader = fread($this->getid3->fp, 1024);
$offset = 0;
if (substr($AACheader, 0, 4) == 'ADIF') {
// http://faac.sourceforge.net/wiki/index.php?page=ADIF
// http://libmpeg.org/mpeg4/doc/w2203tfs.pdf
// adif_header() {
// adif_id 32
// copyright_id_present 1
// if( copyright_id_present )
// copyright_id 72
// original_copy 1
// home 1
// bitstream_type 1
// bitrate 23
// num_program_config_elements 4
// for (i = 0; i < num_program_config_elements + 1; i++) {
// if( bitstream_type == '0' )
// adif_buffer_fullness 20
// program_config_element()
// }
// }
$AACheaderBitstream = Helper::BigEndian2Bin($AACheader);
$bitoffset = 0;
$info['aac']['header_type'] = 'ADIF';
$bitoffset += 32;
$info['aac']['header']['mpeg_version'] = 4;
$info['aac']['header']['copyright'] = (bool) (substr($AACheaderBitstream, $bitoffset, 1) == '1');
$bitoffset += 1;
if ($info['aac']['header']['copyright']) {
$info['aac']['header']['copyright_id'] = Helper::Bin2String(substr($AACheaderBitstream, $bitoffset, 72));
$bitoffset += 72;
}
$info['aac']['header']['original_copy'] = (bool) (substr($AACheaderBitstream, $bitoffset, 1) == '1');
$bitoffset += 1;
$info['aac']['header']['home'] = (bool) (substr($AACheaderBitstream, $bitoffset, 1) == '1');
$bitoffset += 1;
$info['aac']['header']['is_vbr'] = (bool) (substr($AACheaderBitstream, $bitoffset, 1) == '1');
$bitoffset += 1;
if ($info['aac']['header']['is_vbr']) {
$info['audio']['bitrate_mode'] = 'vbr';
$info['aac']['header']['bitrate_max'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 23));
$bitoffset += 23;
} else {
$info['audio']['bitrate_mode'] = 'cbr';
$info['aac']['header']['bitrate'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 23));
$bitoffset += 23;
$info['audio']['bitrate'] = $info['aac']['header']['bitrate'];
}
if ($info['audio']['bitrate'] == 0) {
$info['error'][] = 'Corrupt AAC file: bitrate_audio == zero';
return false;
}
$info['aac']['header']['num_program_configs'] = 1 + Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
for ($i = 0; $i < $info['aac']['header']['num_program_configs']; ++$i) {
// http://www.audiocoding.com/wiki/index.php?page=program_config_element
// buffer_fullness 20
// element_instance_tag 4
// object_type 2
// sampling_frequency_index 4
// num_front_channel_elements 4
// num_side_channel_elements 4
// num_back_channel_elements 4
// num_lfe_channel_elements 2
// num_assoc_data_elements 3
// num_valid_cc_elements 4
// mono_mixdown_present 1
// mono_mixdown_element_number 4 if mono_mixdown_present == 1
// stereo_mixdown_present 1
// stereo_mixdown_element_number 4 if stereo_mixdown_present == 1
// matrix_mixdown_idx_present 1
// matrix_mixdown_idx 2 if matrix_mixdown_idx_present == 1
// pseudo_surround_enable 1 if matrix_mixdown_idx_present == 1
// for (i = 0; i < num_front_channel_elements; i++) {
// front_element_is_cpe[i] 1
// front_element_tag_select[i] 4
// }
// for (i = 0; i < num_side_channel_elements; i++) {
// side_element_is_cpe[i] 1
// side_element_tag_select[i] 4
// }
// for (i = 0; i < num_back_channel_elements; i++) {
// back_element_is_cpe[i] 1
// back_element_tag_select[i] 4
// }
// for (i = 0; i < num_lfe_channel_elements; i++) {
// lfe_element_tag_select[i] 4
// }
// for (i = 0; i < num_assoc_data_elements; i++) {
// assoc_data_element_tag_select[i] 4
// }
// for (i = 0; i < num_valid_cc_elements; i++) {
// cc_element_is_ind_sw[i] 1
// valid_cc_element_tag_select[i] 4
// }
// byte_alignment() VAR
// comment_field_bytes 8
// for (i = 0; i < comment_field_bytes; i++) {
// comment_field_data[i] 8
// }
if (!$info['aac']['header']['is_vbr']) {
$info['aac']['program_configs'][$i]['buffer_fullness'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 20));
$bitoffset += 20;
}
$info['aac']['program_configs'][$i]['element_instance_tag'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
$info['aac']['program_configs'][$i]['object_type'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 2));
$bitoffset += 2;
$info['aac']['program_configs'][$i]['sampling_frequency_index'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
$info['aac']['program_configs'][$i]['num_front_channel_elements'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
$info['aac']['program_configs'][$i]['num_side_channel_elements'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
$info['aac']['program_configs'][$i]['num_back_channel_elements'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
$info['aac']['program_configs'][$i]['num_lfe_channel_elements'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 2));
$bitoffset += 2;
$info['aac']['program_configs'][$i]['num_assoc_data_elements'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 3));
$bitoffset += 3;
$info['aac']['program_configs'][$i]['num_valid_cc_elements'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
$info['aac']['program_configs'][$i]['mono_mixdown_present'] = (bool) Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
$bitoffset += 1;
if ($info['aac']['program_configs'][$i]['mono_mixdown_present']) {
$info['aac']['program_configs'][$i]['mono_mixdown_element_number'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
}
$info['aac']['program_configs'][$i]['stereo_mixdown_present'] = (bool) Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
$bitoffset += 1;
if ($info['aac']['program_configs'][$i]['stereo_mixdown_present']) {
$info['aac']['program_configs'][$i]['stereo_mixdown_element_number'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
}
$info['aac']['program_configs'][$i]['matrix_mixdown_idx_present'] = (bool) Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
$bitoffset += 1;
if ($info['aac']['program_configs'][$i]['matrix_mixdown_idx_present']) {
$info['aac']['program_configs'][$i]['matrix_mixdown_idx'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 2));
$bitoffset += 2;
$info['aac']['program_configs'][$i]['pseudo_surround_enable'] = (bool) Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
$bitoffset += 1;
}
for ($j = 0; $j < $info['aac']['program_configs'][$i]['num_front_channel_elements']; ++$j) {
$info['aac']['program_configs'][$i]['front_element_is_cpe'][$j] = (bool) Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
$bitoffset += 1;
$info['aac']['program_configs'][$i]['front_element_tag_select'][$j] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
}
for ($j = 0; $j < $info['aac']['program_configs'][$i]['num_side_channel_elements']; ++$j) {
$info['aac']['program_configs'][$i]['side_element_is_cpe'][$j] = (bool) Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
$bitoffset += 1;
$info['aac']['program_configs'][$i]['side_element_tag_select'][$j] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
}
for ($j = 0; $j < $info['aac']['program_configs'][$i]['num_back_channel_elements']; ++$j) {
$info['aac']['program_configs'][$i]['back_element_is_cpe'][$j] = (bool) Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
$bitoffset += 1;
$info['aac']['program_configs'][$i]['back_element_tag_select'][$j] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
}
for ($j = 0; $j < $info['aac']['program_configs'][$i]['num_lfe_channel_elements']; ++$j) {
$info['aac']['program_configs'][$i]['lfe_element_tag_select'][$j] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
}
for ($j = 0; $j < $info['aac']['program_configs'][$i]['num_assoc_data_elements']; ++$j) {
$info['aac']['program_configs'][$i]['assoc_data_element_tag_select'][$j] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
}
for ($j = 0; $j < $info['aac']['program_configs'][$i]['num_valid_cc_elements']; ++$j) {
$info['aac']['program_configs'][$i]['cc_element_is_ind_sw'][$j] = (bool) Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
$bitoffset += 1;
$info['aac']['program_configs'][$i]['valid_cc_element_tag_select'][$j] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
$bitoffset += 4;
}
$bitoffset = ceil($bitoffset / 8) * 8;
$info['aac']['program_configs'][$i]['comment_field_bytes'] = Helper::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 8));
$bitoffset += 8;
$info['aac']['program_configs'][$i]['comment_field'] = Helper::Bin2String(substr($AACheaderBitstream, $bitoffset, 8 * $info['aac']['program_configs'][$i]['comment_field_bytes']));
$bitoffset += 8 * $info['aac']['program_configs'][$i]['comment_field_bytes'];
$info['aac']['header']['profile'] = self::AACprofileLookup($info['aac']['program_configs'][$i]['object_type'], $info['aac']['header']['mpeg_version']);
$info['aac']['program_configs'][$i]['sampling_frequency'] = self::AACsampleRateLookup($info['aac']['program_configs'][$i]['sampling_frequency_index']);
$info['audio']['sample_rate'] = $info['aac']['program_configs'][$i]['sampling_frequency'];
$info['audio']['channels'] = self::AACchannelCountCalculate($info['aac']['program_configs'][$i]);
if ($info['aac']['program_configs'][$i]['comment_field']) {
$info['aac']['comments'][] = $info['aac']['program_configs'][$i]['comment_field'];
}
}
$info['playtime_seconds'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['audio']['bitrate'];
$info['audio']['encoder_options'] = $info['aac']['header_type'] . ' ' . $info['aac']['header']['profile'];
return true;
} else {
unset($info['fileformat']);
unset($info['aac']);
$info['error'][] = 'AAC-ADIF synch not found at offset ' . $info['avdataoffset'] . ' (expected "ADIF", found "' . substr($AACheader, 0, 4) . '" instead)';
return false;
}
}
/**
* @return bool
*/
public function analyze()
{
$info =& $this->getid3->info;
// Specs taken from "DTS Coherent Acoustics;Core and Extensions, ETSI TS 102 114 V1.2.1 (2002-12)"
// (http://pda.etsi.org/pda/queryform.asp)
// With thanks to Gambit <*****@*****.**> http://mac.sourceforge.net/atl/
$info['fileformat'] = 'dts';
$this->fseek($info['avdataoffset']);
$DTSheader = $this->fread(16);
$magic = "þ€";
if (strpos($DTSheader, $magic) === 0) {
$info['dts']['raw']['magic'] = $magic;
$offset = 4;
} else {
if (!$this->isDependencyFor('matroska')) {
unset($info['fileformat']);
return $this->error('Expecting "' . Helper::PrintHexBytes($magic) . '" at offset ' . $info['avdataoffset'] . ', found "' . Helper::PrintHexBytes(substr($DTSheader, 0, 4)) . '"');
}
$offset = 0;
}
$fhBS = Helper::BigEndian2Bin(substr($DTSheader, $offset, 12));
$bsOffset = 0;
$info['dts']['raw']['frame_type'] = $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['raw']['deficit_samples'] = $this->readBinData($fhBS, $bsOffset, 5);
$info['dts']['flags']['crc_present'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['raw']['pcm_sample_blocks'] = $this->readBinData($fhBS, $bsOffset, 7);
$info['dts']['raw']['frame_byte_size'] = $this->readBinData($fhBS, $bsOffset, 14);
$info['dts']['raw']['channel_arrangement'] = $this->readBinData($fhBS, $bsOffset, 6);
$info['dts']['raw']['sample_frequency'] = $this->readBinData($fhBS, $bsOffset, 4);
$info['dts']['raw']['bitrate'] = $this->readBinData($fhBS, $bsOffset, 5);
$info['dts']['flags']['embedded_downmix'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['flags']['dynamicrange'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['flags']['timestamp'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['flags']['auxdata'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['flags']['hdcd'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['raw']['extension_audio'] = $this->readBinData($fhBS, $bsOffset, 3);
$info['dts']['flags']['extended_coding'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['flags']['audio_sync_insertion'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['raw']['lfe_effects'] = $this->readBinData($fhBS, $bsOffset, 2);
$info['dts']['flags']['predictor_history'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
if ($info['dts']['flags']['crc_present']) {
$info['dts']['raw']['crc16'] = $this->readBinData($fhBS, $bsOffset, 16);
}
$info['dts']['flags']['mri_perfect_reconst'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['raw']['encoder_soft_version'] = $this->readBinData($fhBS, $bsOffset, 4);
$info['dts']['raw']['copy_history'] = $this->readBinData($fhBS, $bsOffset, 2);
$info['dts']['raw']['bits_per_sample'] = $this->readBinData($fhBS, $bsOffset, 2);
$info['dts']['flags']['surround_es'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['flags']['front_sum_diff'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['flags']['surround_sum_diff'] = (bool) $this->readBinData($fhBS, $bsOffset, 1);
$info['dts']['raw']['dialog_normalization'] = $this->readBinData($fhBS, $bsOffset, 4);
$info['dts']['bitrate'] = self::bitrateLookup($info['dts']['raw']['bitrate']);
$info['dts']['bits_per_sample'] = self::bitPerSampleLookup($info['dts']['raw']['bits_per_sample']);
$info['dts']['sample_rate'] = self::sampleRateLookup($info['dts']['raw']['sample_frequency']);
$info['dts']['dialog_normalization'] = self::dialogNormalization($info['dts']['raw']['dialog_normalization'], $info['dts']['raw']['encoder_soft_version']);
$info['dts']['flags']['lossless'] = $info['dts']['raw']['bitrate'] == 31 ? true : false;
$info['dts']['bitrate_mode'] = $info['dts']['raw']['bitrate'] == 30 ? 'vbr' : 'cbr';
$info['dts']['channels'] = self::numChannelsLookup($info['dts']['raw']['channel_arrangement']);
$info['dts']['channel_arrangement'] = self::channelArrangementLookup($info['dts']['raw']['channel_arrangement']);
$info['audio']['dataformat'] = 'dts';
$info['audio']['lossless'] = $info['dts']['flags']['lossless'];
$info['audio']['bitrate_mode'] = $info['dts']['bitrate_mode'];
$info['audio']['bits_per_sample'] = $info['dts']['bits_per_sample'];
$info['audio']['sample_rate'] = $info['dts']['sample_rate'];
$info['audio']['channels'] = $info['dts']['channels'];
$info['audio']['bitrate'] = $info['dts']['bitrate'];
if (isset($info['avdataend'])) {
$info['playtime_seconds'] = ($info['avdataend'] - $info['avdataoffset']) / ($info['dts']['bitrate'] / 8);
}
return true;
}
