mirror of
https://github.com/Yetangitu/ampache
synced 2025-10-03 09:49:30 +02:00
399 lines
No EOL
23 KiB
PHP
399 lines
No EOL
23 KiB
PHP
<?php
|
|
// +----------------------------------------------------------------------+
|
|
// | PHP version 5 |
|
|
// +----------------------------------------------------------------------+
|
|
// | Copyright (c) 2002-2006 James Heinrich, Allan Hansen |
|
|
// +----------------------------------------------------------------------+
|
|
// | This source file is subject to version 2 of the GPL license, |
|
|
// | that is bundled with this package in the file license.txt and is |
|
|
// | available through the world-wide-web at the following url: |
|
|
// | http://www.gnu.org/copyleft/gpl.html |
|
|
// +----------------------------------------------------------------------+
|
|
// | getID3() - http://getid3.sourceforge.net or http://www.getid3.org |
|
|
// +----------------------------------------------------------------------+
|
|
// | Authors: James Heinrich <infoØgetid3*org> |
|
|
// | Allan Hansen <ahØartemis*dk> |
|
|
// +----------------------------------------------------------------------+
|
|
// | module.audio.wavpack.php |
|
|
// | module for analyzing WavPack v4.0+ Audio files |
|
|
// | dependencies: audio-video.riff |
|
|
// +----------------------------------------------------------------------+
|
|
//
|
|
// $Id: module.audio.wavpack.php,v 1.2 2006/11/02 10:48:02 ah Exp $
|
|
|
|
|
|
class getid3_wavpack extends getid3_handler
|
|
{
|
|
|
|
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'] & 0x00000003);
|
|
$info_wavpack_blockheader['flags']['mono'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x00000004);
|
|
$info_wavpack_blockheader['flags']['hybrid'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x00000008);
|
|
$info_wavpack_blockheader['flags']['joint_stereo'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x00000010);
|
|
$info_wavpack_blockheader['flags']['cross_decorrelation'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x00000020);
|
|
$info_wavpack_blockheader['flags']['hybrid_noiseshape'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x00000040);
|
|
$info_wavpack_blockheader['flags']['ieee_32bit_float'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x00000080);
|
|
$info_wavpack_blockheader['flags']['int_32bit'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x00000100);
|
|
$info_wavpack_blockheader['flags']['hybrid_bitrate_noise'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x00000200);
|
|
$info_wavpack_blockheader['flags']['hybrid_balance_noise'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x00000400);
|
|
$info_wavpack_blockheader['flags']['multichannel_initial'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x00000800);
|
|
$info_wavpack_blockheader['flags']['multichannel_final'] = (bool) ($info_wavpack_blockheader['flags_raw'] & 0x00001000);
|
|
|
|
$getid3->info['audio']['lossless'] = !$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
|
|
case 0x22: // ID_RIFF_TRAILER
|
|
case 0x23: // ID_REPLAY_GAIN
|
|
case 0x24: // ID_CUESHEET
|
|
case 0x25: // ID_CONFIG_BLOCK
|
|
case 0x26: // ID_MD5_CHECKSUM
|
|
$metablock['data'] = fread($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 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($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'] & 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 %
|
|
|
|
$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($metablock['data']).' bytes');
|
|
}
|
|
break;
|
|
|
|
|
|
case 0x00: // ID_DUMMY
|
|
case 0x01: // ID_ENCODER_INFO
|
|
case 0x02: // ID_DECORR_TERMS
|
|
case 0x03: // ID_DECORR_WEIGHTS
|
|
case 0x04: // ID_DECORR_SAMPLES
|
|
case 0x05: // ID_ENTROPY_VARS
|
|
case 0x06: // ID_HYBRID_PROFILE
|
|
case 0x07: // ID_SHAPING_WEIGHTS
|
|
case 0x08: // ID_FLOAT_INFO
|
|
case 0x09: // ID_INT32_INFO
|
|
case 0x0A: // ID_WV_BITSTREAM
|
|
case 0x0B: // ID_WVC_BITSTREAM
|
|
case 0x0C: // ID_WVX_BITSTREAM
|
|
case 0x0D: // ID_CHANNEL_INFO
|
|
unset($metablock);
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
if (!empty($metablock)) {
|
|
$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 {
|
|
$getid3->info['audio']['dataformat'] = 'wvc';
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
|
|
public static function WavPackMetablockNameLookup($id) {
|
|
|
|
static $lookup = array(
|
|
0x00 => 'Dummy',
|
|
0x01 => 'Encoder Info',
|
|
0x02 => 'Decorrelation Terms',
|
|
0x03 => 'Decorrelation Weights',
|
|
0x04 => 'Decorrelation Samples',
|
|
0x05 => 'Entropy Variables',
|
|
0x06 => 'Hybrid Profile',
|
|
0x07 => 'Shaping Weights',
|
|
0x08 => 'Float Info',
|
|
0x09 => 'Int32 Info',
|
|
0x0A => 'WV Bitstream',
|
|
0x0B => 'WVC Bitstream',
|
|
0x0C => 'WVX Bitstream',
|
|
0x0D => 'Channel Info',
|
|
0x21 => 'RIFF header',
|
|
0x22 => 'RIFF trailer',
|
|
0x23 => 'Replay Gain',
|
|
0x24 => 'Cuesheet',
|
|
0x25 => 'Config Block',
|
|
0x26 => 'MD5 Checksum',
|
|
);
|
|
|
|
return (@$lookup[$id]);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
?>
|