private function ParseOptimFROGheader45() { $getid3 = $this->getid3; // for fileformat of v4.50a and higher $riff_data = ''; fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET); while (!feof($getid3->fp) && ftell($getid3->fp) < $getid3->info['avdataend']) { $block_offset = ftell($getid3->fp); $block_data = fread($getid3->fp, 8); $offset = 8; $block_name = substr($block_data, 0, 4); $block_size = getid3_lib::LittleEndian2Int(substr($block_data, 4, 4)); if ($block_name == 'OFRX') { $block_name = 'OFR '; } if (!isset($getid3->info['ofr'][$block_name])) { $getid3->info['ofr'][$block_name] = array(); } $info_ofr_this_block =& $getid3->info['ofr'][$block_name]; switch ($block_name) { case 'OFR ': // shortcut $info_ofr_this_block['offset'] = $block_offset; $info_ofr_this_block['size'] = $block_size; $getid3->info['audio']['encoder'] = 'OptimFROG 4.50 alpha'; switch ($block_size) { case 12: case 15: // good break; default: $getid3->warning('"' . $block_name . '" contains more data than expected (expected 12 or 15 bytes, found ' . $block_size . ' bytes)'); break; } $block_data .= fread($getid3->fp, $block_size); $info_ofr_this_block['total_samples'] = getid3_lib::LittleEndian2Int(substr($block_data, $offset, 6)); $offset += 6; $info_ofr_this_block['raw']['sample_type'] = getid3_lib::LittleEndian2Int($block_data[$offset++]); $info_ofr_this_block['sample_type'] = $this->OptimFROGsampleTypeLookup($info_ofr_this_block['raw']['sample_type']); $info_ofr_this_block['channel_config'] = getid3_lib::LittleEndian2Int($block_data[$offset++]); $info_ofr_this_block['channels'] = $info_ofr_this_block['channel_config']; $info_ofr_this_block['sample_rate'] = getid3_lib::LittleEndian2Int(substr($block_data, $offset, 4)); $offset += 4; if ($block_size > 12) { // OFR 4.504b or higher $info_ofr_this_block['channels'] = $this->OptimFROGchannelConfigNumChannelsLookup($info_ofr_this_block['channel_config']); $info_ofr_this_block['raw']['encoder_id'] = getid3_lib::LittleEndian2Int(substr($block_data, $offset, 2)); $info_ofr_this_block['encoder'] = $this->OptimFROGencoderNameLookup($info_ofr_this_block['raw']['encoder_id']); $offset += 2; $info_ofr_this_block['raw']['compression'] = getid3_lib::LittleEndian2Int($block_data[$offset++]); $info_ofr_this_block['compression'] = $this->OptimFROGcompressionLookup($info_ofr_this_block['raw']['compression']); $info_ofr_this_block['speedup'] = $this->OptimFROGspeedupLookup($info_ofr_this_block['raw']['compression']); $getid3->info['audio']['encoder'] = 'OptimFROG ' . $info_ofr_this_block['encoder']; $getid3->info['audio']['encoder_options'] = '--mode ' . $info_ofr_this_block['compression']; if (($info_ofr_this_block['raw']['encoder_id'] & 0xf0) >> 4 == 7) { // v4.507 if (preg_match('/\\.ofs$/i', $getid3->filename)) { // OptimFROG DualStream format is lossy, but as of v4.507 there is no way to tell the difference // between lossless and lossy other than the file extension. $getid3->info['audio']['dataformat'] = 'ofs'; $getid3->info['audio']['lossless'] = true; } } } $getid3->info['audio']['channels'] = $info_ofr_this_block['channels']; $getid3->info['audio']['sample_rate'] = $info_ofr_this_block['sample_rate']; $getid3->info['audio']['bits_per_sample'] = $this->OptimFROGbitsPerSampleTypeLookup($info_ofr_this_block['raw']['sample_type']); break; case 'COMP': // unlike other block types, there CAN be multiple COMP blocks $comp_data['offset'] = $block_offset; $comp_data['size'] = $block_size; if ($getid3->info['avdataoffset'] == 0) { $getid3->info['avdataoffset'] = $block_offset; } // Only interested in first 14 bytes (only first 12 needed for v4.50 alpha), not actual audio data $block_data .= fread($getid3->fp, 14); fseek($getid3->fp, $block_size - 14, SEEK_CUR); $comp_data['crc_32'] = getid3_lib::LittleEndian2Int(substr($block_data, $offset, 4)); $offset += 4; $comp_data['sample_count'] = getid3_lib::LittleEndian2Int(substr($block_data, $offset, 4)); $offset += 4; $comp_data['raw']['sample_type'] = getid3_lib::LittleEndian2Int($block_data[$offset++]); $comp_data['sample_type'] = $this->OptimFROGsampleTypeLookup($comp_data['raw']['sample_type']); $comp_data['raw']['channel_configuration'] = getid3_lib::LittleEndian2Int($block_data[$offset++]); $comp_data['channel_configuration'] = $this->OptimFROGchannelConfigurationLookup($comp_data['raw']['channel_configuration']); $comp_data['raw']['algorithm_id'] = getid3_lib::LittleEndian2Int(substr($block_data, $offset, 2)); $offset += 2; if ($getid3->info['ofr']['OFR ']['size'] > 12) { // OFR 4.504b or higher $comp_data['raw']['encoder_id'] = getid3_lib::LittleEndian2Int(substr($block_data, $offset, 2)); $comp_data['encoder'] = $this->OptimFROGencoderNameLookup($comp_data['raw']['encoder_id']); $offset += 2; } if ($comp_data['crc_32'] == 0x454e4f4e) { // ASCII value of 'NONE' - placeholder value in v4.50a $comp_data['crc_32'] = false; } $info_ofr_this_block[] = $comp_data; break; case 'HEAD': $info_ofr_this_block['offset'] = $block_offset; $info_ofr_this_block['size'] = $block_size; $riff_data .= fread($getid3->fp, $block_size); break; case 'TAIL': $info_ofr_this_block['offset'] = $block_offset; $info_ofr_this_block['size'] = $block_size; if ($block_size > 0) { $riff_data .= fread($getid3->fp, $block_size); } break; case 'RECV': // block contains no useful meta data - simply note and skip $info_ofr_this_block['offset'] = $block_offset; $info_ofr_this_block['size'] = $block_size; fseek($getid3->fp, $block_size, SEEK_CUR); break; case 'APET': // APEtag v2 $info_ofr_this_block['offset'] = $block_offset; $info_ofr_this_block['size'] = $block_size; $getid3->warning('APEtag processing inside OptimFROG not supported in this version (' . GETID3_VERSION . ') of getID3()'); fseek($getid3->fp, $block_size, SEEK_CUR); break; case 'MD5 ': // APEtag v2 $info_ofr_this_block['offset'] = $block_offset; $info_ofr_this_block['size'] = $block_size; if ($block_size == 16) { $info_ofr_this_block['md5_binary'] = fread($getid3->fp, $block_size); $info_ofr_this_block['md5_string'] = getid3_lib::PrintHexBytes($info_ofr_this_block['md5_binary'], true, false, false); $getid3->info['md5_data_source'] = $info_ofr_this_block['md5_string']; } else { $getid3->warning('Expecting block size of 16 in "MD5 " chunk, found ' . $block_size . ' instead'); fseek($getid3->fp, $block_size, SEEK_CUR); } break; default: $info_ofr_this_block['offset'] = $block_offset; $info_ofr_this_block['size'] = $block_size; $getid3->warning('Unhandled OptimFROG block type "' . $block_name . '" at offset ' . $info_ofr_this_block['offset']); fseek($getid3->fp, $block_size, SEEK_CUR); break; } } if (isset($getid3->info['ofr']['TAIL']['offset'])) { $getid3->info['avdataend'] = $getid3->info['ofr']['TAIL']['offset']; } $getid3->info['playtime_seconds'] = (double) $getid3->info['ofr']['OFR ']['total_samples'] / ($getid3->info['audio']['channels'] * $getid3->info['audio']['sample_rate']); $getid3->info['audio']['bitrate'] = ($getid3->info['avdataend'] - $getid3->info['avdataoffset']) * 8 / $getid3->info['playtime_seconds']; // move the data chunk after all other chunks (if any) // so that the RIFF parser doesn't see EOF when trying // to skip over the data chunk $riff_data = substr($riff_data, 0, 36) . substr($riff_data, 44) . substr($riff_data, 36, 8); // Save audio info key $saved_info_audio = $getid3->info['audio']; // Instantiate riff module and analyze string $riff = new getid3_riff($getid3); $riff->AnalyzeString($riff_data); // Restore info key $getid3->info['audio'] = $saved_info_audio; $getid3->info['fileformat'] = 'ofr'; return true; }
public function Analyze() { $getid3 = $this->getid3; $getid3->include_module('audio-video.riff'); fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET); $raw_data = fread($getid3->fp, getid3::FREAD_BUFFER_SIZE); $getid3->info['fileformat'] = 'la'; $getid3->info['audio']['dataformat'] = 'la'; $getid3->info['audio']['lossless'] = true; $getid3->info['la']['version_major'] = (int) $raw_data[2]; $getid3->info['la']['version_minor'] = (int) $raw_data[3]; $getid3->info['la']['version'] = (double) $getid3->info['la']['version_major'] + $getid3->info['la']['version_minor'] / 10; $getid3->info['la']['uncompressed_size'] = getid3_lib::LittleEndian2Int(substr($raw_data, 4, 4)); $wave_chunk = substr($raw_data, 8, 4); if ($wave_chunk !== 'WAVE') { throw new getid3_exception('Expected "WAVE" (' . getid3_lib::PrintHexBytes('WAVE') . ') at offset 8, found "' . $wave_chunk . '" (' . getid3_lib::PrintHexBytes($wave_chunk) . ') instead.'); } $offset = 12; $getid3->info['la']['fmt_size'] = 24; if ($getid3->info['la']['version'] >= 0.3) { $getid3->info['la']['fmt_size'] = getid3_lib::LittleEndian2Int(substr($raw_data, $offset, 4)); $getid3->info['la']['header_size'] = 49 + $getid3->info['la']['fmt_size'] - 24; $offset += 4; } else { // version 0.2 didn't support additional data blocks $getid3->info['la']['header_size'] = 41; } $fmt_chunk = substr($raw_data, $offset, 4); if ($fmt_chunk !== 'fmt ') { throw new getid3_exception('Expected "fmt " (' . getid3_lib::PrintHexBytes('fmt ') . ') at offset ' . $offset . ', found "' . $fmt_chunk . '" (' . getid3_lib::PrintHexBytes($fmt_chunk) . ') instead.'); } $offset += 4; $fmt_size = getid3_lib::LittleEndian2Int(substr($raw_data, $offset, 4)); $offset += 4; $getid3->info['la']['raw']['format'] = getid3_lib::LittleEndian2Int(substr($raw_data, $offset, 2)); $offset += 2; getid3_lib::ReadSequence('LittleEndian2Int', $getid3->info['la'], $raw_data, $offset, array('channels' => 2, 'sample_rate' => 4, 'bytes_per_second' => 4, 'bytes_per_sample' => 2, 'bits_per_sample' => 2, 'samples' => 4)); $offset += 18; $getid3->info['la']['raw']['flags'] = getid3_lib::LittleEndian2Int($raw_data[$offset++]); $getid3->info['la']['flags']['seekable'] = (bool) ($getid3->info['la']['raw']['flags'] & 0x1); if ($getid3->info['la']['version'] >= 0.4) { $getid3->info['la']['flags']['high_compression'] = (bool) ($getid3->info['la']['raw']['flags'] & 0x2); } $getid3->info['la']['original_crc'] = getid3_lib::LittleEndian2Int(substr($raw_data, $offset, 4)); $offset += 4; // mikeØbevin*de // Basically, the blocksize/seekevery are 61440/19 in La0.4 and 73728/16 // in earlier versions. A seekpoint is added every blocksize * seekevery // samples, so 4 * int(totalSamples / (blockSize * seekEvery)) should // give the number of bytes used for the seekpoints. Of course, if seeking // is disabled, there are no seekpoints stored. if ($getid3->info['la']['version'] >= 0.4) { $getid3->info['la']['blocksize'] = 61440; $getid3->info['la']['seekevery'] = 19; } else { $getid3->info['la']['blocksize'] = 73728; $getid3->info['la']['seekevery'] = 16; } $getid3->info['la']['seekpoint_count'] = 0; if ($getid3->info['la']['flags']['seekable']) { $getid3->info['la']['seekpoint_count'] = floor($getid3->info['la']['samples'] / ($getid3->info['la']['blocksize'] * $getid3->info['la']['seekevery'])); for ($i = 0; $i < $getid3->info['la']['seekpoint_count']; $i++) { $getid3->info['la']['seekpoints'][] = getid3_lib::LittleEndian2Int(substr($raw_data, $offset, 4)); $offset += 4; } } if ($getid3->info['la']['version'] >= 0.3) { // Following the main header information, the program outputs all of the // seekpoints. Following these is what I called the 'footer start', // i.e. the position immediately after the La audio data is finished. $getid3->info['la']['footerstart'] = getid3_lib::LittleEndian2Int(substr($raw_data, $offset, 4)); $offset += 4; if ($getid3->info['la']['footerstart'] > $getid3->info['filesize']) { $getid3->warning('FooterStart value points to offset ' . $getid3->info['la']['footerstart'] . ' which is beyond end-of-file (' . $getid3->info['filesize'] . ')'); $getid3->info['la']['footerstart'] = $getid3->info['filesize']; } } else { // La v0.2 didn't have FooterStart value $getid3->info['la']['footerstart'] = $getid3->info['avdataend']; } if ($getid3->info['la']['footerstart'] < $getid3->info['avdataend']) { // Create riff header $riff_data = 'WAVE'; if ($getid3->info['la']['version'] == 0.2) { $riff_data .= substr($raw_data, 12, 24); } else { $riff_data .= substr($raw_data, 16, 24); } if ($getid3->info['la']['footerstart'] < $getid3->info['avdataend']) { fseek($getid3->fp, $getid3->info['la']['footerstart'], SEEK_SET); $riff_data .= fread($getid3->fp, $getid3->info['avdataend'] - $getid3->info['la']['footerstart']); } $riff_data = 'RIFF' . getid3_lib::LittleEndian2String(strlen($riff_data), 4, false) . $riff_data; // Clone getid3 - messing with offsets - better safe than sorry $clone = clone $getid3; // Analyze clone by string $riff = new getid3_riff($clone); $riff->AnalyzeString($riff_data); // Import from clone and destroy $getid3->info['riff'] = $clone->info['riff']; $getid3->warnings($clone->warnings()); unset($clone); } // $getid3->info['avdataoffset'] should be zero to begin with, but just in case it's not, include the addition anyway $getid3->info['avdataend'] = $getid3->info['avdataoffset'] + $getid3->info['la']['footerstart']; $getid3->info['avdataoffset'] = $getid3->info['avdataoffset'] + $offset; $getid3->info['la']['compression_ratio'] = (double) (($getid3->info['avdataend'] - $getid3->info['avdataoffset']) / $getid3->info['la']['uncompressed_size']); $getid3->info['playtime_seconds'] = (double) ($getid3->info['la']['samples'] / $getid3->info['la']['sample_rate']) / $getid3->info['la']['channels']; $getid3->info['audio']['bitrate'] = ($getid3->info['avdataend'] - $getid3->info['avdataoffset']) * 8 / $getid3->info['playtime_seconds']; $getid3->info['audio']['bits_per_sample'] = $getid3->info['la']['bits_per_sample']; $getid3->info['audio']['channels'] = $getid3->info['la']['channels']; $getid3->info['audio']['sample_rate'] = (int) $getid3->info['la']['sample_rate']; $getid3->info['audio']['encoder'] = 'LA v' . $getid3->info['la']['version']; return true; }
public function Analyze() { $getid3 = $this->getid3; $getid3->include_module('audio-video.riff'); $getid3->info['wavpack'] = array(); $info_wavpack =& $getid3->info['wavpack']; fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET); while (true) { $wavpack_header = fread($getid3->fp, 32); if (ftell($getid3->fp) >= $getid3->info['avdataend']) { break; } elseif (feof($getid3->fp)) { break; } elseif (@$info_wavpack_blockheader['total_samples'] > 0 && @$info_wavpack_blockheader['block_samples'] > 0 && (!isset($info_wavpack['riff_trailer_size']) || $info_wavpack['riff_trailer_size'] <= 0) && (@$info_wavpack['config_flags']['md5_checksum'] === false || !empty($getid3->info['md5_data_source']))) { break; } $block_header_offset = ftell($getid3->fp) - 32; $block_header_magic = substr($wavpack_header, 0, 4); $block_header_size = getid3_lib::LittleEndian2Int(substr($wavpack_header, 4, 4)); if ($block_header_magic != 'wvpk') { throw new getid3_exception('Expecting "wvpk" at offset ' . $block_header_offset . ', found "' . $block_header_magic . '"'); } if (@$info_wavpack_blockheader['block_samples'] <= 0 || @$info_wavpack_blockheader['total_samples'] <= 0) { // Also, it is possible that the first block might not have // any samples (block_samples == 0) and in this case you should skip blocks // until you find one with samples because the other information (like // total_samples) are not guaranteed to be correct until (block_samples > 0) // Finally, I have defined a format for files in which the length is not known // (for example when raw files are created using pipes). In these cases // total_samples will be -1 and you must seek to the final block to determine // the total number of samples. $getid3->info['audio']['dataformat'] = 'wavpack'; $getid3->info['fileformat'] = 'wavpack'; $getid3->info['audio']['lossless'] = true; $getid3->info['audio']['bitrate_mode'] = 'vbr'; $info_wavpack['blockheader']['offset'] = $block_header_offset; $info_wavpack['blockheader']['magic'] = $block_header_magic; $info_wavpack['blockheader']['size'] = $block_header_size; $info_wavpack_blockheader =& $info_wavpack['blockheader']; if ($info_wavpack_blockheader['size'] >= 0x100000) { throw new getid3_exception('Expecting WavPack block size less than "0x100000", found "' . $info_wavpack_blockheader['size'] . '" at offset ' . $info_wavpack_blockheader['offset']); } $info_wavpack_blockheader['minor_version'] = ord($wavpack_header[8]); $info_wavpack_blockheader['major_version'] = ord($wavpack_header[9]); if ($info_wavpack_blockheader['major_version'] != 4 || $info_wavpack_blockheader['minor_version'] < 4 && $info_wavpack_blockheader['minor_version'] > 16) { throw new getid3_exception('Expecting WavPack version between "4.2" and "4.16", found version "' . $info_wavpack_blockheader['major_version'] . '.' . $info_wavpack_blockheader['minor_version'] . '" at offset ' . $info_wavpack_blockheader['offset']); } $info_wavpack_blockheader['track_number'] = ord($wavpack_header[10]); // unused $info_wavpack_blockheader['index_number'] = ord($wavpack_header[11]); // unused getid3_lib::ReadSequence('LittleEndian2Int', $info_wavpack_blockheader, $wavpack_header, 12, array('total_samples' => 4, 'block_index' => 4, 'block_samples' => 4, 'flags_raw' => 4, 'crc' => 4)); $info_wavpack_blockheader['flags']['bytes_per_sample'] = 1 + ($info_wavpack_blockheader['flags_raw'] & 0x3); $info_wavpack_blockheader['flags']['mono'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x4); $info_wavpack_blockheader['flags']['hybrid'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x8); $info_wavpack_blockheader['flags']['joint_stereo'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x10); $info_wavpack_blockheader['flags']['cross_decorrelation'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x20); $info_wavpack_blockheader['flags']['hybrid_noiseshape'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x40); $info_wavpack_blockheader['flags']['ieee_32bit_float'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x80); $info_wavpack_blockheader['flags']['int_32bit'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x100); $info_wavpack_blockheader['flags']['hybrid_bitrate_noise'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x200); $info_wavpack_blockheader['flags']['hybrid_balance_noise'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x400); $info_wavpack_blockheader['flags']['multichannel_initial'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x800); $info_wavpack_blockheader['flags']['multichannel_final'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x1000); $getid3->info['audio']['lossless'] = !$info_wavpack_blockheader['flags']['hybrid']; } while (!feof($getid3->fp) && ftell($getid3->fp) < $block_header_offset + $block_header_size + 8) { $metablock = array('offset' => ftell($getid3->fp)); $metablockheader = fread($getid3->fp, 2); if (feof($getid3->fp)) { break; } $metablock['id'] = ord($metablockheader[0]); $metablock['function_id'] = $metablock['id'] & 0x3f; $metablock['function_name'] = $this->WavPackMetablockNameLookup($metablock['function_id']); // The 0x20 bit in the id of the meta subblocks (which is defined as // ID_OPTIONAL_DATA) is a permanent part of the id. The idea is that // if a decoder encounters an id that it does not know about, it uses // that "ID_OPTIONAL_DATA" flag to determine what to do. If it is set // then the decoder simply ignores the metadata, but if it is zero // then the decoder should quit because it means that an understanding // of the metadata is required to correctly decode the audio. $metablock['non_decoder'] = (bool) ($metablock['id'] & 0x20); $metablock['padded_data'] = (bool) ($metablock['id'] & 0x40); $metablock['large_block'] = (bool) ($metablock['id'] & 0x80); if ($metablock['large_block']) { $metablockheader .= fread($getid3->fp, 2); } $metablock['size'] = getid3_lib::LittleEndian2Int(substr($metablockheader, 1)) * 2; // size is stored in words $metablock['data'] = null; if ($metablock['size'] > 0) { switch ($metablock['function_id']) { case 0x21: // ID_RIFF_HEADER // ID_RIFF_HEADER case 0x22: // ID_RIFF_TRAILER // ID_RIFF_TRAILER case 0x23: // ID_REPLAY_GAIN // ID_REPLAY_GAIN case 0x24: // ID_CUESHEET // ID_CUESHEET case 0x25: // ID_CONFIG_BLOCK // ID_CONFIG_BLOCK case 0x26: // ID_MD5_CHECKSUM $metablock['data'] = fread($getid3->fp, $metablock['size']); if ($metablock['padded_data']) { // padded to the nearest even byte $metablock['size']--; $metablock['data'] = substr($metablock['data'], 0, -1); } break; case 0x0: // ID_DUMMY // ID_DUMMY case 0x1: // ID_ENCODER_INFO // ID_ENCODER_INFO case 0x2: // ID_DECORR_TERMS // ID_DECORR_TERMS case 0x3: // ID_DECORR_WEIGHTS // ID_DECORR_WEIGHTS case 0x4: // ID_DECORR_SAMPLES // ID_DECORR_SAMPLES case 0x5: // ID_ENTROPY_VARS // ID_ENTROPY_VARS case 0x6: // ID_HYBRID_PROFILE // ID_HYBRID_PROFILE case 0x7: // ID_SHAPING_WEIGHTS // ID_SHAPING_WEIGHTS case 0x8: // ID_FLOAT_INFO // ID_FLOAT_INFO case 0x9: // ID_INT32_INFO // ID_INT32_INFO case 0xa: // ID_WV_BITSTREAM // ID_WV_BITSTREAM case 0xb: // ID_WVC_BITSTREAM // ID_WVC_BITSTREAM case 0xc: // ID_WVX_BITSTREAM // ID_WVX_BITSTREAM case 0xd: // ID_CHANNEL_INFO fseek($getid3->fp, $metablock['offset'] + ($metablock['large_block'] ? 4 : 2) + $metablock['size'], SEEK_SET); break; default: $getid3->warning('Unexpected metablock type "0x' . str_pad(dechex($metablock['function_id']), 2, '0', STR_PAD_LEFT) . '" at offset ' . $metablock['offset']); fseek($getid3->fp, $metablock['offset'] + ($metablock['large_block'] ? 4 : 2) + $metablock['size'], SEEK_SET); break; } switch ($metablock['function_id']) { case 0x21: // ID_RIFF_HEADER $original_wav_filesize = getid3_lib::LittleEndian2Int(substr($metablock['data'], 4, 4)); // Clone getid3 $clone = clone $getid3; // Analyze clone by string $riff = new getid3_riff($clone); $riff->AnalyzeString($metablock['data']); // Import from clone and destroy $metablock['riff'] = $clone->info['riff']; $getid3->warnings($clone->warnings()); unset($clone); // Save RIFF header - we may need it later for RIFF footer parsing $this->riff_header = $metablock['data']; $metablock['riff']['original_filesize'] = $original_wav_filesize; $info_wavpack['riff_trailer_size'] = $original_wav_filesize - $metablock['riff']['WAVE']['data'][0]['size'] - $metablock['riff']['header_size']; $getid3->info['audio']['sample_rate'] = $metablock['riff']['raw']['fmt ']['nSamplesPerSec']; $getid3->info['playtime_seconds'] = $info_wavpack_blockheader['total_samples'] / $getid3->info['audio']['sample_rate']; // Safe RIFF header in case there's a RIFF footer later $metablock_riff_header = $metablock['data']; break; case 0x22: // ID_RIFF_TRAILER $metablock_riff_footer = $metablock_riff_header . $metablock['data']; $start_offset = $metablock['offset'] + ($metablock['large_block'] ? 4 : 2); $ftell_old = ftell($getid3->fp); // Clone getid3 $clone = clone $getid3; // Call public method that really should be private $riff = new getid3_riff($clone); $metablock['riff'] = $riff->ParseRIFF($start_offset, $start_offset + $metablock['size']); unset($clone); fseek($getid3->fp, $ftell_old, SEEK_SET); if (!empty($metablock['riff']['INFO'])) { getid3_riff::RIFFCommentsParse($metablock['riff']['INFO'], $metablock['comments']); $getid3->info['tags']['riff'] = $metablock['comments']; } break; case 0x23: // ID_REPLAY_GAIN $getid3->warning('WavPack "Replay Gain" contents not yet handled by getID3() in metablock at offset ' . $metablock['offset']); break; case 0x24: // ID_CUESHEET $getid3->warning('WavPack "Cuesheet" contents not yet handled by getID3() in metablock at offset ' . $metablock['offset']); break; case 0x25: // ID_CONFIG_BLOCK $metablock['flags_raw'] = getid3_lib::LittleEndian2Int(substr($metablock['data'], 0, 3)); $metablock['flags']['adobe_mode'] = (bool) ($metablock['flags_raw'] & 0x1); // "adobe" mode for 32-bit floats $metablock['flags']['fast_flag'] = (bool) ($metablock['flags_raw'] & 0x2); // fast mode $metablock['flags']['very_fast_flag'] = (bool) ($metablock['flags_raw'] & 0x4); // double fast $metablock['flags']['high_flag'] = (bool) ($metablock['flags_raw'] & 0x8); // high quality mode $metablock['flags']['very_high_flag'] = (bool) ($metablock['flags_raw'] & 0x10); // double high (not used yet) $metablock['flags']['bitrate_kbps'] = (bool) ($metablock['flags_raw'] & 0x20); // bitrate is kbps, not bits / sample $metablock['flags']['auto_shaping'] = (bool) ($metablock['flags_raw'] & 0x40); // automatic noise shaping $metablock['flags']['shape_override'] = (bool) ($metablock['flags_raw'] & 0x80); // shaping mode specified $metablock['flags']['joint_override'] = (bool) ($metablock['flags_raw'] & 0x100); // joint-stereo mode specified $metablock['flags']['copy_time'] = (bool) ($metablock['flags_raw'] & 0x200); // copy file-time from source $metablock['flags']['create_exe'] = (bool) ($metablock['flags_raw'] & 0x400); // create executable $metablock['flags']['create_wvc'] = (bool) ($metablock['flags_raw'] & 0x800); // create correction file $metablock['flags']['optimize_wvc'] = (bool) ($metablock['flags_raw'] & 0x1000); // maximize bybrid compression $metablock['flags']['quality_mode'] = (bool) ($metablock['flags_raw'] & 0x2000); // psychoacoustic quality mode $metablock['flags']['raw_flag'] = (bool) ($metablock['flags_raw'] & 0x4000); // raw mode (not implemented yet) $metablock['flags']['calc_noise'] = (bool) ($metablock['flags_raw'] & 0x8000); // calc noise in hybrid mode $metablock['flags']['lossy_mode'] = (bool) ($metablock['flags_raw'] & 0x10000); // obsolete (for information) $metablock['flags']['extra_mode'] = (bool) ($metablock['flags_raw'] & 0x20000); // extra processing mode $metablock['flags']['skip_wvx'] = (bool) ($metablock['flags_raw'] & 0x40000); // no wvx stream w/ floats & big ints $metablock['flags']['md5_checksum'] = (bool) ($metablock['flags_raw'] & 0x80000); // compute & store MD5 signature $metablock['flags']['quiet_mode'] = (bool) ($metablock['flags_raw'] & 0x100000); // don't report progress % $info_wavpack['config_flags'] = $metablock['flags']; $getid3->info['audio']['encoder_options'] = trim(($info_wavpack_blockheader['flags']['hybrid'] ? ' -b???' : '') . ($metablock['flags']['adobe_mode'] ? ' -a' : '') . ($metablock['flags']['optimize_wvc'] ? ' -cc' : '') . ($metablock['flags']['create_exe'] ? ' -e' : '') . ($metablock['flags']['fast_flag'] ? ' -f' : '') . ($metablock['flags']['joint_override'] ? ' -j?' : '') . ($metablock['flags']['high_flag'] ? ' -h' : '') . ($metablock['flags']['md5_checksum'] ? ' -m' : '') . ($metablock['flags']['calc_noise'] ? ' -n' : '') . ($metablock['flags']['shape_override'] ? ' -s?' : '') . ($metablock['flags']['extra_mode'] ? ' -x?' : '')); if (!$getid3->info['audio']['encoder_options']) { unset($getid3->info['audio']['encoder_options']); } break; case 0x26: // ID_MD5_CHECKSUM if (strlen($metablock['data']) == 16) { $getid3->info['md5_data_source'] = strtolower(getid3_lib::PrintHexBytes($metablock['data'], true, false, false)); } else { $getid3->warning('Expecting 16 bytes of WavPack "MD5 Checksum" in metablock at offset ' . $metablock['offset'] . ', but found ' . strlen($metablock['data']) . ' bytes'); } break; case 0x0: // ID_DUMMY // ID_DUMMY case 0x1: // ID_ENCODER_INFO // ID_ENCODER_INFO case 0x2: // ID_DECORR_TERMS // ID_DECORR_TERMS case 0x3: // ID_DECORR_WEIGHTS // ID_DECORR_WEIGHTS case 0x4: // ID_DECORR_SAMPLES // ID_DECORR_SAMPLES case 0x5: // ID_ENTROPY_VARS // ID_ENTROPY_VARS case 0x6: // ID_HYBRID_PROFILE // ID_HYBRID_PROFILE case 0x7: // ID_SHAPING_WEIGHTS // ID_SHAPING_WEIGHTS case 0x8: // ID_FLOAT_INFO // ID_FLOAT_INFO case 0x9: // ID_INT32_INFO // ID_INT32_INFO case 0xa: // ID_WV_BITSTREAM // ID_WV_BITSTREAM case 0xb: // ID_WVC_BITSTREAM // ID_WVC_BITSTREAM case 0xc: // ID_WVX_BITSTREAM // ID_WVX_BITSTREAM case 0xd: // ID_CHANNEL_INFO unset($metablock); break; } } if (!empty($metablock)) { $info_wavpack['metablocks'][] = $metablock; } } } $getid3->info['audio']['encoder'] = 'WavPack v' . $info_wavpack_blockheader['major_version'] . '.' . str_pad($info_wavpack_blockheader['minor_version'], 2, '0', STR_PAD_LEFT); $getid3->info['audio']['bits_per_sample'] = $info_wavpack_blockheader['flags']['bytes_per_sample'] * 8; $getid3->info['audio']['channels'] = $info_wavpack_blockheader['flags']['mono'] ? 1 : 2; if (@$getid3->info['playtime_seconds']) { $getid3->info['audio']['bitrate'] = ($getid3->info['avdataend'] - $getid3->info['avdataoffset']) * 8 / $getid3->info['playtime_seconds']; } else { $getid3->info['audio']['dataformat'] = 'wvc'; } return true; }