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-rw-r--r--modules/id3/getid3/module.audio.mpc.php296
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diff --git a/modules/id3/getid3/module.audio.mpc.php b/modules/id3/getid3/module.audio.mpc.php
deleted file mode 100644
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--- a/modules/id3/getid3/module.audio.mpc.php
+++ /dev/null
@@ -1,296 +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.mpc.php //
-// module for analyzing Musepack/MPEG+ Audio files //
-// dependencies: NONE //
-// ///
-/////////////////////////////////////////////////////////////////
-
-
-class getid3_mpc
-{
-
- function getid3_mpc(&$fd, &$ThisFileInfo) {
- // http://www.uni-jena.de/~pfk/mpp/sv8/header.html
-
- $ThisFileInfo['mpc']['header'] = array();
- $thisfile_mpc_header = &$ThisFileInfo['mpc']['header'];
-
- $ThisFileInfo['fileformat'] = 'mpc';
- $ThisFileInfo['audio']['dataformat'] = 'mpc';
- $ThisFileInfo['audio']['bitrate_mode'] = 'vbr';
- $ThisFileInfo['audio']['channels'] = 2; // the format appears to be hardcoded for stereo only
- $ThisFileInfo['audio']['lossless'] = false;
-
- fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
-
- $thisfile_mpc_header['size'] = 28;
- $MPCheaderData = fread($fd, $thisfile_mpc_header['size']);
- $offset = 0;
-
- if (substr($MPCheaderData, $offset, 3) == 'MP+') {
-
- // great, this is SV7+
- $thisfile_mpc_header['raw']['preamble'] = substr($MPCheaderData, $offset, 3); // should be 'MP+'
- $offset += 3;
-
- } elseif (preg_match('/^[\x00\x01\x10\x11\x40\x41\x50\x51\x80\x81\x90\x91\xC0\xC1\xD0\xD1][\x20-37][\x00\x20\x40\x60\x80\xA0\xC0\xE0]/s', substr($MPCheaderData, 0, 4))) {
-
- // this is SV4 - SV6, handle seperately
- $thisfile_mpc_header['size'] = 8;
-
- // add size of file header to avdataoffset - calc bitrate correctly + MD5 data
- $ThisFileInfo['avdataoffset'] += $thisfile_mpc_header['size'];
-
- // Most of this code adapted from Jurgen Faul's MPEGplus source code - thanks Jurgen! :)
- $HeaderDWORD[0] = getid3_lib::LittleEndian2Int(substr($MPCheaderData, 0, 4));
- $HeaderDWORD[1] = getid3_lib::LittleEndian2Int(substr($MPCheaderData, 4, 4));
-
-
- // DDDD DDDD CCCC CCCC BBBB BBBB AAAA AAAA
- // aaaa aaaa abcd dddd dddd deee eeff ffff
- //
- // a = bitrate = anything
- // b = IS = anything
- // c = MS = anything
- // d = streamversion = 0000000004 or 0000000005 or 0000000006
- // e = maxband = anything
- // f = blocksize = 000001 for SV5+, anything(?) for SV4
-
- $thisfile_mpc_header['target_bitrate'] = (($HeaderDWORD[0] & 0xFF800000) >> 23);
- $thisfile_mpc_header['intensity_stereo'] = (bool) (($HeaderDWORD[0] & 0x00400000) >> 22);
- $thisfile_mpc_header['mid-side_stereo'] = (bool) (($HeaderDWORD[0] & 0x00200000) >> 21);
- $thisfile_mpc_header['stream_major_version'] = ($HeaderDWORD[0] & 0x001FF800) >> 11;
- $thisfile_mpc_header['stream_minor_version'] = 0; // no sub-version numbers before SV7
- $thisfile_mpc_header['max_band'] = ($HeaderDWORD[0] & 0x000007C0) >> 6; // related to lowpass frequency, not sure how it translates exactly
- $thisfile_mpc_header['block_size'] = ($HeaderDWORD[0] & 0x0000003F);
-
- switch ($thisfile_mpc_header['stream_major_version']) {
- case 4:
- $thisfile_mpc_header['frame_count'] = ($HeaderDWORD[1] >> 16);
- break;
-
- case 5:
- case 6:
- $thisfile_mpc_header['frame_count'] = $HeaderDWORD[1];
- break;
-
- default:
- $ThisFileInfo['error'] = 'Expecting 4, 5 or 6 in version field, found '.$thisfile_mpc_header['stream_major_version'].' instead';
- unset($ThisFileInfo['mpc']);
- return false;
- break;
- }
-
- if (($thisfile_mpc_header['stream_major_version'] > 4) && ($thisfile_mpc_header['block_size'] != 1)) {
- $ThisFileInfo['warning'][] = 'Block size expected to be 1, actual value found: '.$thisfile_mpc_header['block_size'];
- }
-
- $thisfile_mpc_header['sample_rate'] = 44100; // AB: used by all files up to SV7
- $ThisFileInfo['audio']['sample_rate'] = $thisfile_mpc_header['sample_rate'];
- $thisfile_mpc_header['samples'] = $thisfile_mpc_header['frame_count'] * 1152 * $ThisFileInfo['audio']['channels'];
-
- if ($thisfile_mpc_header['target_bitrate'] == 0) {
- $ThisFileInfo['audio']['bitrate_mode'] = 'vbr';
- } else {
- $ThisFileInfo['audio']['bitrate_mode'] = 'cbr';
- }
-
- $ThisFileInfo['mpc']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 * 44100 / $thisfile_mpc_header['frame_count'] / 1152;
- $ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['mpc']['bitrate'];
- $ThisFileInfo['audio']['encoder'] = 'SV'.$thisfile_mpc_header['stream_major_version'];
-
- return true;
-
- } else {
-
- $ThisFileInfo['error'][] = 'Expecting "MP+" at offset '.$ThisFileInfo['avdataoffset'].', found "'.substr($MPCheaderData, $offset, 3).'"';
- unset($ThisFileInfo['fileformat']);
- unset($ThisFileInfo['mpc']);
- return false;
-
- }
-
- // Continue with SV7+ handling
- $StreamVersionByte = getid3_lib::LittleEndian2Int(substr($MPCheaderData, $offset, 1));
- $offset += 1;
- $thisfile_mpc_header['stream_major_version'] = ($StreamVersionByte & 0x0F);
- $thisfile_mpc_header['stream_minor_version'] = ($StreamVersionByte & 0xF0) >> 4;
- $thisfile_mpc_header['frame_count'] = getid3_lib::LittleEndian2Int(substr($MPCheaderData, $offset, 4));
- $offset += 4;
-
- switch ($thisfile_mpc_header['stream_major_version']) {
- case 7:
- //$ThisFileInfo['fileformat'] = 'SV7';
- break;
-
- default:
- $ThisFileInfo['error'][] = 'Only Musepack SV7 supported';
- return false;
- }
-
- $FlagsDWORD1 = getid3_lib::LittleEndian2Int(substr($MPCheaderData, $offset, 4));
- $offset += 4;
- $thisfile_mpc_header['intensity_stereo'] = (bool) (($FlagsDWORD1 & 0x80000000) >> 31);
- $thisfile_mpc_header['mid_side_stereo'] = (bool) (($FlagsDWORD1 & 0x40000000) >> 30);
- $thisfile_mpc_header['max_subband'] = ($FlagsDWORD1 & 0x3F000000) >> 24;
- $thisfile_mpc_header['raw']['profile'] = ($FlagsDWORD1 & 0x00F00000) >> 20;
- $thisfile_mpc_header['begin_loud'] = (bool) (($FlagsDWORD1 & 0x00080000) >> 19);
- $thisfile_mpc_header['end_loud'] = (bool) (($FlagsDWORD1 & 0x00040000) >> 18);
- $thisfile_mpc_header['raw']['sample_rate'] = ($FlagsDWORD1 & 0x00030000) >> 16;
- $thisfile_mpc_header['max_level'] = ($FlagsDWORD1 & 0x0000FFFF);
-
- $thisfile_mpc_header['raw']['title_peak'] = getid3_lib::LittleEndian2Int(substr($MPCheaderData, $offset, 2));
- $offset += 2;
- $thisfile_mpc_header['raw']['title_gain'] = getid3_lib::LittleEndian2Int(substr($MPCheaderData, $offset, 2), true);
- $offset += 2;
-
- $thisfile_mpc_header['raw']['album_peak'] = getid3_lib::LittleEndian2Int(substr($MPCheaderData, $offset, 2));
- $offset += 2;
- $thisfile_mpc_header['raw']['album_gain'] = getid3_lib::LittleEndian2Int(substr($MPCheaderData, $offset, 2), true);
- $offset += 2;
-
- $FlagsDWORD2 = getid3_lib::LittleEndian2Int(substr($MPCheaderData, $offset, 4));
- $offset += 4;
- $thisfile_mpc_header['true_gapless'] = (bool) (($FlagsDWORD2 & 0x80000000) >> 31);
- $thisfile_mpc_header['last_frame_length'] = ($FlagsDWORD2 & 0x7FF00000) >> 20;
-
-
- $thisfile_mpc_header['raw']['not_sure_what'] = getid3_lib::LittleEndian2Int(substr($MPCheaderData, $offset, 3));
- $offset += 3;
- $thisfile_mpc_header['raw']['encoder_version'] = getid3_lib::LittleEndian2Int(substr($MPCheaderData, $offset, 1));
- $offset += 1;
-
- $thisfile_mpc_header['profile'] = $this->MPCprofileNameLookup($thisfile_mpc_header['raw']['profile']);
- $thisfile_mpc_header['sample_rate'] = $this->MPCfrequencyLookup($thisfile_mpc_header['raw']['sample_rate']);
- if ($thisfile_mpc_header['sample_rate'] == 0) {
- $ThisFileInfo['error'][] = 'Corrupt MPC file: frequency == zero';
- return false;
- }
- $ThisFileInfo['audio']['sample_rate'] = $thisfile_mpc_header['sample_rate'];
- $thisfile_mpc_header['samples'] = ((($thisfile_mpc_header['frame_count'] - 1) * 1152) + $thisfile_mpc_header['last_frame_length']) * $ThisFileInfo['audio']['channels'];
-
- $ThisFileInfo['playtime_seconds'] = ($thisfile_mpc_header['samples'] / $ThisFileInfo['audio']['channels']) / $ThisFileInfo['audio']['sample_rate'];
- if ($ThisFileInfo['playtime_seconds'] == 0) {
- $ThisFileInfo['error'][] = 'Corrupt MPC file: playtime_seconds == zero';
- return false;
- }
-
- // add size of file header to avdataoffset - calc bitrate correctly + MD5 data
- $ThisFileInfo['avdataoffset'] += $thisfile_mpc_header['size'];
-
- $ThisFileInfo['audio']['bitrate'] = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['playtime_seconds'];
-
- $thisfile_mpc_header['title_peak'] = $thisfile_mpc_header['raw']['title_peak'];
- $thisfile_mpc_header['title_peak_db'] = $this->MPCpeakDBLookup($thisfile_mpc_header['title_peak']);
- if ($thisfile_mpc_header['raw']['title_gain'] < 0) {
- $thisfile_mpc_header['title_gain_db'] = (float) (32768 + $thisfile_mpc_header['raw']['title_gain']) / -100;
- } else {
- $thisfile_mpc_header['title_gain_db'] = (float) $thisfile_mpc_header['raw']['title_gain'] / 100;
- }
-
- $thisfile_mpc_header['album_peak'] = $thisfile_mpc_header['raw']['album_peak'];
- $thisfile_mpc_header['album_peak_db'] = $this->MPCpeakDBLookup($thisfile_mpc_header['album_peak']);
- if ($thisfile_mpc_header['raw']['album_gain'] < 0) {
- $thisfile_mpc_header['album_gain_db'] = (float) (32768 + $thisfile_mpc_header['raw']['album_gain']) / -100;
- } else {
- $thisfile_mpc_header['album_gain_db'] = (float) $thisfile_mpc_header['raw']['album_gain'] / 100;;
- }
- $thisfile_mpc_header['encoder_version'] = $this->MPCencoderVersionLookup($thisfile_mpc_header['raw']['encoder_version']);
-
- $ThisFileInfo['replay_gain']['track']['adjustment'] = $thisfile_mpc_header['title_gain_db'];
- $ThisFileInfo['replay_gain']['album']['adjustment'] = $thisfile_mpc_header['album_gain_db'];
-
- if ($thisfile_mpc_header['title_peak'] > 0) {
- $ThisFileInfo['replay_gain']['track']['peak'] = $thisfile_mpc_header['title_peak'];
- } elseif (round($thisfile_mpc_header['max_level'] * 1.18) > 0) {
- $ThisFileInfo['replay_gain']['track']['peak'] = getid3_lib::CastAsInt(round($thisfile_mpc_header['max_level'] * 1.18)); // why? I don't know - see mppdec.c
- }
- if ($thisfile_mpc_header['album_peak'] > 0) {
- $ThisFileInfo['replay_gain']['album']['peak'] = $thisfile_mpc_header['album_peak'];
- }
-
- //$ThisFileInfo['audio']['encoder'] = 'SV'.$thisfile_mpc_header['stream_major_version'].'.'.$thisfile_mpc_header['stream_minor_version'].', '.$thisfile_mpc_header['encoder_version'];
- $ThisFileInfo['audio']['encoder'] = $thisfile_mpc_header['encoder_version'];
- $ThisFileInfo['audio']['encoder_options'] = $thisfile_mpc_header['profile'];
-
- return true;
- }
-
- function MPCprofileNameLookup($profileid) {
- static $MPCprofileNameLookup = array(
- 0 => 'no profile',
- 1 => 'Experimental',
- 2 => 'unused',
- 3 => 'unused',
- 4 => 'unused',
- 5 => 'below Telephone (q = 0.0)',
- 6 => 'below Telephone (q = 1.0)',
- 7 => 'Telephone (q = 2.0)',
- 8 => 'Thumb (q = 3.0)',
- 9 => 'Radio (q = 4.0)',
- 10 => 'Standard (q = 5.0)',
- 11 => 'Extreme (q = 6.0)',
- 12 => 'Insane (q = 7.0)',
- 13 => 'BrainDead (q = 8.0)',
- 14 => 'above BrainDead (q = 9.0)',
- 15 => 'above BrainDead (q = 10.0)'
- );
- return (isset($MPCprofileNameLookup[$profileid]) ? $MPCprofileNameLookup[$profileid] : 'invalid');
- }
-
- function MPCfrequencyLookup($frequencyid) {
- static $MPCfrequencyLookup = array(
- 0 => 44100,
- 1 => 48000,
- 2 => 37800,
- 3 => 32000
- );
- return (isset($MPCfrequencyLookup[$frequencyid]) ? $MPCfrequencyLookup[$frequencyid] : 'invalid');
- }
-
- function MPCpeakDBLookup($intvalue) {
- if ($intvalue > 0) {
- return ((log10($intvalue) / log10(2)) - 15) * 6;
- }
- return false;
- }
-
- function MPCencoderVersionLookup($encoderversion) {
- //Encoder version * 100 (106 = 1.06)
- //EncoderVersion % 10 == 0 Release (1.0)
- //EncoderVersion % 2 == 0 Beta (1.06)
- //EncoderVersion % 2 == 1 Alpha (1.05a...z)
-
- if ($encoderversion == 0) {
- // very old version, not known exactly which
- return 'Buschmann v1.7.0-v1.7.9 or Klemm v0.90-v1.05';
- }
-
- if (($encoderversion % 10) == 0) {
-
- // release version
- return number_format($encoderversion / 100, 2);
-
- } elseif (($encoderversion % 2) == 0) {
-
- // beta version
- return number_format($encoderversion / 100, 2).' beta';
-
- }
-
- // alpha version
- return number_format($encoderversion / 100, 2).' alpha';
- }
-
-}
-
-
-?> \ No newline at end of file
generated by cgit (git 2.34.1) at 2025-08-14 02:10:00 +0000