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Diffstat (limited to 'getid3/module.audio.wavpack.php')
| -rw-r--r-- | getid3/module.audio.wavpack.php | 372 |
1 files changed, 0 insertions, 372 deletions
diff --git a/getid3/module.audio.wavpack.php b/getid3/module.audio.wavpack.php deleted file mode 100644 index 0435f08..0000000 --- a/getid3/module.audio.wavpack.php +++ /dev/null @@ -1,372 +0,0 @@ -<?php -///////////////////////////////////////////////////////////////// -/// getID3() by James Heinrich <info@getid3.org> // -// available at http://getid3.sourceforge.net // -// or http://www.getid3.org // -///////////////////////////////////////////////////////////////// -// See readme.txt for more details // -///////////////////////////////////////////////////////////////// -// // -// module.audio.wavpack.php // -// module for analyzing WavPack v4.0+ Audio files // -// dependencies: NONE // -// /// -///////////////////////////////////////////////////////////////// - - -class getid3_wavpack -{ - - function getid3_wavpack(&$fd, &$ThisFileInfo) { - - fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); - - while (true) { - - $wavpackheader = fread($fd, 32); - - if (ftell($fd) >= $ThisFileInfo['avdataend']) { - break; - } elseif (feof($fd)) { - break; - } elseif ( - (@$ThisFileInfo['wavpack']['blockheader']['total_samples'] > 0) && - (@$ThisFileInfo['wavpack']['blockheader']['block_samples'] > 0) && - (!isset($ThisFileInfo['wavpack']['riff_trailer_size']) || ($ThisFileInfo['wavpack']['riff_trailer_size'] <= 0)) && - ((@$ThisFileInfo['wavpack']['config_flags']['md5_checksum'] === false) || !empty($ThisFileInfo['md5_data_source']))) { - break; - } - - $blockheader_offset = ftell($fd) - 32; - $blockheader_magic = substr($wavpackheader, 0, 4); - $blockheader_size = getid3_lib::LittleEndian2Int(substr($wavpackheader, 4, 4)); - - if ($blockheader_magic != 'wvpk') { - $ThisFileInfo['error'][] = 'Expecting "wvpk" at offset '.$blockheader_offset.', found "'.$blockheader_magic.'"'; - if ((@$ThisFileInfo['audio']['dataformat'] != 'wavpack') && (@$ThisFileInfo['audio']['dataformat'] != 'wvc')) { - unset($ThisFileInfo['fileformat']); - unset($ThisFileInfo['audio']); - unset($ThisFileInfo['wavpack']); - } - return false; - } - - - if ((@$ThisFileInfo['wavpack']['blockheader']['block_samples'] <= 0) || - (@$ThisFileInfo['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.
- - - $ThisFileInfo['audio']['dataformat'] = 'wavpack'; - $ThisFileInfo['fileformat'] = 'wavpack'; - $ThisFileInfo['audio']['lossless'] = true; - $ThisFileInfo['audio']['bitrate_mode'] = 'vbr'; - - $ThisFileInfo['wavpack']['blockheader']['offset'] = $blockheader_offset; - $ThisFileInfo['wavpack']['blockheader']['magic'] = $blockheader_magic; - $ThisFileInfo['wavpack']['blockheader']['size'] = $blockheader_size; - - if ($ThisFileInfo['wavpack']['blockheader']['size'] >= 0x100000) { - $ThisFileInfo['error'][] = 'Expecting WavPack block size less than "0x100000", found "'.$ThisFileInfo['wavpack']['blockheader']['size'].'" at offset '.$ThisFileInfo['wavpack']['blockheader']['offset']; - if ((@$ThisFileInfo['audio']['dataformat'] != 'wavpack') && (@$ThisFileInfo['audio']['dataformat'] != 'wvc')) { - unset($ThisFileInfo['fileformat']); - unset($ThisFileInfo['audio']); - unset($ThisFileInfo['wavpack']); - } - return false; - } - - $ThisFileInfo['wavpack']['blockheader']['minor_version'] = ord($wavpackheader{8}); - $ThisFileInfo['wavpack']['blockheader']['major_version'] = ord($wavpackheader{9}); - - if (($ThisFileInfo['wavpack']['blockheader']['major_version'] != 4) || - (($ThisFileInfo['wavpack']['blockheader']['minor_version'] < 4) && - ($ThisFileInfo['wavpack']['blockheader']['minor_version'] > 16))) { - $ThisFileInfo['error'][] = 'Expecting WavPack version between "4.2" and "4.16", found version "'.$ThisFileInfo['wavpack']['blockheader']['major_version'].'.'.$ThisFileInfo['wavpack']['blockheader']['minor_version'].'" at offset '.$ThisFileInfo['wavpack']['blockheader']['offset']; - if ((@$ThisFileInfo['audio']['dataformat'] != 'wavpack') && (@$ThisFileInfo['audio']['dataformat'] != 'wvc')) { - unset($ThisFileInfo['fileformat']); - unset($ThisFileInfo['audio']); - unset($ThisFileInfo['wavpack']); - } - return false; - } - - $ThisFileInfo['wavpack']['blockheader']['track_number'] = ord($wavpackheader{10}); // unused - $ThisFileInfo['wavpack']['blockheader']['index_number'] = ord($wavpackheader{11}); // unused - $ThisFileInfo['wavpack']['blockheader']['total_samples'] = getid3_lib::LittleEndian2Int(substr($wavpackheader, 12, 4)); - $ThisFileInfo['wavpack']['blockheader']['block_index'] = getid3_lib::LittleEndian2Int(substr($wavpackheader, 16, 4)); - $ThisFileInfo['wavpack']['blockheader']['block_samples'] = getid3_lib::LittleEndian2Int(substr($wavpackheader, 20, 4)); - $ThisFileInfo['wavpack']['blockheader']['flags_raw'] = getid3_lib::LittleEndian2Int(substr($wavpackheader, 24, 4)); - $ThisFileInfo['wavpack']['blockheader']['crc'] = getid3_lib::LittleEndian2Int(substr($wavpackheader, 28, 4)); - - $ThisFileInfo['wavpack']['blockheader']['flags']['bytes_per_sample'] = 1 + ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000003); - $ThisFileInfo['wavpack']['blockheader']['flags']['mono'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000004); - $ThisFileInfo['wavpack']['blockheader']['flags']['hybrid'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000008); - $ThisFileInfo['wavpack']['blockheader']['flags']['joint_stereo'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000010); - $ThisFileInfo['wavpack']['blockheader']['flags']['cross_decorrelation'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000020); - $ThisFileInfo['wavpack']['blockheader']['flags']['hybrid_noiseshape'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000040); - $ThisFileInfo['wavpack']['blockheader']['flags']['ieee_32bit_float'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000080); - $ThisFileInfo['wavpack']['blockheader']['flags']['int_32bit'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000100); - $ThisFileInfo['wavpack']['blockheader']['flags']['hybrid_bitrate_noise'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000200); - $ThisFileInfo['wavpack']['blockheader']['flags']['hybrid_balance_noise'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000400); - $ThisFileInfo['wavpack']['blockheader']['flags']['multichannel_initial'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000800); - $ThisFileInfo['wavpack']['blockheader']['flags']['multichannel_final'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00001000); - - $ThisFileInfo['audio']['lossless'] = !$ThisFileInfo['wavpack']['blockheader']['flags']['hybrid']; - } - - while (!feof($fd) && (ftell($fd) < ($blockheader_offset + $blockheader_size + 8))) { - - $metablock = array('offset'=>ftell($fd)); - $metablockheader = fread($fd, 2); - if (feof($fd)) { - 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']) { - $metablockheader .= fread($fd, 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 - case 0x22: // ID_RIFF_TRAILER - case 0x23: // ID_REPLAY_GAIN - case 0x24: // ID_CUESHEET - case 0x25: // ID_CONFIG_BLOCK - case 0x26: // ID_MD5_CHECKSUM - $metablock['data'] = fread($fd, $metablock['size']); - - if ($metablock['padded_data']) { - // padded to the nearest even byte - $metablock['size']--; - $metablock['data'] = substr($metablock['data'], 0, -1); - } - break; - - case 0x00: // ID_DUMMY - case 0x01: // ID_ENCODER_INFO - case 0x02: // ID_DECORR_TERMS - case 0x03: // ID_DECORR_WEIGHTS - case 0x04: // ID_DECORR_SAMPLES - case 0x05: // ID_ENTROPY_VARS - case 0x06: // ID_HYBRID_PROFILE - case 0x07: // ID_SHAPING_WEIGHTS - case 0x08: // ID_FLOAT_INFO - case 0x09: // ID_INT32_INFO - case 0x0A: // ID_WV_BITSTREAM - case 0x0B: // ID_WVC_BITSTREAM - case 0x0C: // ID_WVX_BITSTREAM - case 0x0D: // ID_CHANNEL_INFO - fseek($fd, $metablock['offset'] + ($metablock['large_block'] ? 4 : 2) + $metablock['size'], SEEK_SET); - break; - - default: - $ThisFileInfo['warning'][] = 'Unexpected metablock type "0x'.str_pad(dechex($metablock['function_id']), 2, '0', STR_PAD_LEFT).'" at offset '.$metablock['offset']; - fseek($fd, $metablock['offset'] + ($metablock['large_block'] ? 4 : 2) + $metablock['size'], SEEK_SET); - break; - } - - switch ($metablock['function_id']) { - case 0x21: // ID_RIFF_HEADER - getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true); - $original_wav_filesize = getid3_lib::LittleEndian2Int(substr($metablock['data'], 4, 4)); - getid3_riff::ParseRIFFdata($metablock['data'], $ParsedRIFFheader); - $metablock['riff'] = $ParsedRIFFheader['riff']; - $metablock['riff']['original_filesize'] = $original_wav_filesize; - $ThisFileInfo['wavpack']['riff_trailer_size'] = $original_wav_filesize - $metablock['riff']['WAVE']['data'][0]['size'] - $metablock['riff']['header_size']; - - $ThisFileInfo['audio']['sample_rate'] = $ParsedRIFFheader['riff']['raw']['fmt ']['nSamplesPerSec']; - $ThisFileInfo['playtime_seconds'] = $ThisFileInfo['wavpack']['blockheader']['total_samples'] / $ThisFileInfo['audio']['sample_rate']; - - // Safe RIFF header in case there's a RIFF footer later - $metablockRIFFheader = $metablock['data']; - break; - - - case 0x22: // ID_RIFF_TRAILER - $metablockRIFFfooter = $metablockRIFFheader.$metablock['data']; - getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true); - - $ftell_old = ftell($fd); - $startoffset = $metablock['offset'] + ($metablock['large_block'] ? 4 : 2); - $ParsedRIFFfooter = array('avdataend'=>$ThisFileInfo['avdataend'], 'fileformat'=>'riff', 'error'=>array(), 'warning'=>array()); - $metablock['riff'] = getid3_riff::ParseRIFF($fd, $startoffset, $startoffset + $metablock['size'], $ParsedRIFFfooter); - fseek($fd, $ftell_old, SEEK_SET); - - if (!empty($metablock['riff']['INFO'])) { - getid3_riff::RIFFcommentsParse($metablock['riff']['INFO'], $metablock['comments']); - $ThisFileInfo['tags']['riff'] = $metablock['comments']; - } - break; - - - case 0x23: // ID_REPLAY_GAIN - $ThisFileInfo['warning'][] = 'WavPack "Replay Gain" contents not yet handled by getID3() in metablock at offset '.$metablock['offset']; - break; - - - case 0x24: // ID_CUESHEET - $ThisFileInfo['warning'][] = 'WavPack "Cuesheet" contents not yet handled by getID3() in metablock at offset '.$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'] & 0x000001); // "adobe" mode for 32-bit floats - $metablock['flags']['fast_flag'] = (bool) ($metablock['flags_raw'] & 0x000002); // fast mode - $metablock['flags']['very_fast_flag'] = (bool) ($metablock['flags_raw'] & 0x000004); // double fast - $metablock['flags']['high_flag'] = (bool) ($metablock['flags_raw'] & 0x000008); // high quality mode - $metablock['flags']['very_high_flag'] = (bool) ($metablock['flags_raw'] & 0x000010); // double high (not used yet) - $metablock['flags']['bitrate_kbps'] = (bool) ($metablock['flags_raw'] & 0x000020); // bitrate is kbps, not bits / sample - $metablock['flags']['auto_shaping'] = (bool) ($metablock['flags_raw'] & 0x000040); // automatic noise shaping - $metablock['flags']['shape_override'] = (bool) ($metablock['flags_raw'] & 0x000080); // shaping mode specified - $metablock['flags']['joint_override'] = (bool) ($metablock['flags_raw'] & 0x000100); // joint-stereo mode specified - $metablock['flags']['copy_time'] = (bool) ($metablock['flags_raw'] & 0x000200); // copy file-time from source - $metablock['flags']['create_exe'] = (bool) ($metablock['flags_raw'] & 0x000400); // create executable - $metablock['flags']['create_wvc'] = (bool) ($metablock['flags_raw'] & 0x000800); // create correction file - $metablock['flags']['optimize_wvc'] = (bool) ($metablock['flags_raw'] & 0x001000); // maximize bybrid compression - $metablock['flags']['quality_mode'] = (bool) ($metablock['flags_raw'] & 0x002000); // psychoacoustic quality mode - $metablock['flags']['raw_flag'] = (bool) ($metablock['flags_raw'] & 0x004000); // raw mode (not implemented yet) - $metablock['flags']['calc_noise'] = (bool) ($metablock['flags_raw'] & 0x008000); // calc noise in hybrid mode - $metablock['flags']['lossy_mode'] = (bool) ($metablock['flags_raw'] & 0x010000); // obsolete (for information) - $metablock['flags']['extra_mode'] = (bool) ($metablock['flags_raw'] & 0x020000); // extra processing mode - $metablock['flags']['skip_wvx'] = (bool) ($metablock['flags_raw'] & 0x040000); // no wvx stream w/ floats & big ints - $metablock['flags']['md5_checksum'] = (bool) ($metablock['flags_raw'] & 0x080000); // compute & store MD5 signature - $metablock['flags']['quiet_mode'] = (bool) ($metablock['flags_raw'] & 0x100000); // don't report progress % - - $ThisFileInfo['wavpack']['config_flags'] = $metablock['flags']; - - - if ($ThisFileInfo['wavpack']['blockheader']['flags']['hybrid']) { - @$ThisFileInfo['audio']['encoder_options'] .= ' -b???'; - } - @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['adobe_mode'] ? ' -a' : ''); - @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['optimize_wvc'] ? ' -cc' : ''); - @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['create_exe'] ? ' -e' : ''); - @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['fast_flag'] ? ' -f' : ''); - @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['joint_override'] ? ' -j?' : ''); - @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['high_flag'] ? ' -h' : ''); - @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['md5_checksum'] ? ' -m' : ''); - @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['calc_noise'] ? ' -n' : ''); - @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['shape_override'] ? ' -s?' : ''); - @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['extra_mode'] ? ' -x?' : ''); - if (@$ThisFileInfo['audio']['encoder_options']) { - $ThisFileInfo['audio']['encoder_options'] = trim(@$ThisFileInfo['audio']['encoder_options']); - } - elseif (isset($ThisFileInfo['audio']['encoder_options'])) { - unset($ThisFileInfo['audio']['encoder_options']); - } - break; - - - case 0x26: // ID_MD5_CHECKSUM - if (strlen($metablock['data']) == 16) { - $ThisFileInfo['md5_data_source'] = strtolower(getid3_lib::PrintHexBytes($metablock['data'], true, false, false)); - } else { - $ThisFileInfo['warning'][] = 'Expecting 16 bytes of WavPack "MD5 Checksum" in metablock at offset '.$metablock['offset'].', but found '.strlen($metablock['data']).' bytes'; - } - break; - - - case 0x00: // ID_DUMMY - case 0x01: // ID_ENCODER_INFO - case 0x02: // ID_DECORR_TERMS - case 0x03: // ID_DECORR_WEIGHTS - case 0x04: // ID_DECORR_SAMPLES - case 0x05: // ID_ENTROPY_VARS - case 0x06: // ID_HYBRID_PROFILE - case 0x07: // ID_SHAPING_WEIGHTS - case 0x08: // ID_FLOAT_INFO - case 0x09: // ID_INT32_INFO - case 0x0A: // ID_WV_BITSTREAM - case 0x0B: // ID_WVC_BITSTREAM - case 0x0C: // ID_WVX_BITSTREAM - case 0x0D: // ID_CHANNEL_INFO - unset($metablock); - break; - } - - } - if (!empty($metablock)) { - $ThisFileInfo['wavpack']['metablocks'][] = $metablock; - } - - } - - } - - $ThisFileInfo['audio']['encoder'] = 'WavPack v'.$ThisFileInfo['wavpack']['blockheader']['major_version'].'.'.str_pad($ThisFileInfo['wavpack']['blockheader']['minor_version'], 2, '0', STR_PAD_LEFT); - $ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['wavpack']['blockheader']['flags']['bytes_per_sample'] * 8; - $ThisFileInfo['audio']['channels'] = ($ThisFileInfo['wavpack']['blockheader']['flags']['mono'] ? 1 : 2); - - if (@$ThisFileInfo['playtime_seconds']) { - - $ThisFileInfo['audio']['bitrate'] = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['playtime_seconds']; - - } else { - - $ThisFileInfo['audio']['dataformat'] = 'wvc'; - - } - - return true; - } - - - function WavPackMetablockNameLookup(&$id) { - static $WavPackMetablockNameLookup = array( - 0x00 => 'Dummy', - 0x01 => 'Encoder Info', - 0x02 => 'Decorrelation Terms', - 0x03 => 'Decorrelation Weights', - 0x04 => 'Decorrelation Samples', - 0x05 => 'Entropy Variables', - 0x06 => 'Hybrid Profile', - 0x07 => 'Shaping Weights', - 0x08 => 'Float Info', - 0x09 => 'Int32 Info', - 0x0A => 'WV Bitstream', - 0x0B => 'WVC Bitstream', - 0x0C => 'WVX Bitstream', - 0x0D => 'Channel Info', - 0x21 => 'RIFF header', - 0x22 => 'RIFF trailer', - 0x23 => 'Replay Gain', - 0x24 => 'Cuesheet', - 0x25 => 'Config Block', - 0x26 => 'MD5 Checksum', - ); - return (@$WavPackMetablockNameLookup[$id]); - } - -} - - -?>
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