public function Analyze()
{
$info =& $this->getid3->info;
$this->fseek($info['avdataoffset']);
while (true) {
$wavpackheader = $this->fread(32);
if ($this->ftell() >= $info['avdataend']) {
break;
} elseif (feof($this->getid3->fp)) {
break;
} elseif (isset($info['wavpack']['blockheader']['total_samples']) && isset($info['wavpack']['blockheader']['block_samples']) && $info['wavpack']['blockheader']['total_samples'] > 0 && $info['wavpack']['blockheader']['block_samples'] > 0 && (!isset($info['wavpack']['riff_trailer_size']) || $info['wavpack']['riff_trailer_size'] <= 0) && (isset($info['wavpack']['config_flags']['md5_checksum']) && $info['wavpack']['config_flags']['md5_checksum'] === false || !empty($info['md5_data_source']))) {
break;
}
$blockheader_offset = $this->ftell() - 32;
$blockheader_magic = substr($wavpackheader, 0, 4);
$blockheader_size = Utils::LittleEndian2Int(substr($wavpackheader, 4, 4));
$magic = 'wvpk';
if ($blockheader_magic != $magic) {
$info['error'][] = 'Expecting "' . Utils::PrintHexBytes($magic) . '" at offset ' . $blockheader_offset . ', found "' . Utils::PrintHexBytes($blockheader_magic) . '"';
switch (isset($info['audio']['dataformat']) ? $info['audio']['dataformat'] : '') {
case 'wavpack':
case 'wvc':
break;
default:
unset($info['fileformat']);
unset($info['audio']);
unset($info['wavpack']);
break;
}
return false;
}
if (empty($info['wavpack']['blockheader']['block_samples']) || empty($info['wavpack']['blockheader']['total_samples']) || $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.
$info['audio']['dataformat'] = 'wavpack';
$info['fileformat'] = 'wavpack';
$info['audio']['lossless'] = true;
$info['audio']['bitrate_mode'] = 'vbr';
$info['wavpack']['blockheader']['offset'] = $blockheader_offset;
$info['wavpack']['blockheader']['magic'] = $blockheader_magic;
$info['wavpack']['blockheader']['size'] = $blockheader_size;
if ($info['wavpack']['blockheader']['size'] >= 0x100000) {
$info['error'][] = 'Expecting WavPack block size less than "0x100000", found "' . $info['wavpack']['blockheader']['size'] . '" at offset ' . $info['wavpack']['blockheader']['offset'];
switch (isset($info['audio']['dataformat']) ? $info['audio']['dataformat'] : '') {
case 'wavpack':
case 'wvc':
break;
default:
unset($info['fileformat']);
unset($info['audio']);
unset($info['wavpack']);
break;
}
return false;
}
$info['wavpack']['blockheader']['minor_version'] = ord($wavpackheader[8]);
$info['wavpack']['blockheader']['major_version'] = ord($wavpackheader[9]);
if ($info['wavpack']['blockheader']['major_version'] != 4 || $info['wavpack']['blockheader']['minor_version'] < 4 && $info['wavpack']['blockheader']['minor_version'] > 16) {
$info['error'][] = 'Expecting WavPack version between "4.2" and "4.16", found version "' . $info['wavpack']['blockheader']['major_version'] . '.' . $info['wavpack']['blockheader']['minor_version'] . '" at offset ' . $info['wavpack']['blockheader']['offset'];
switch (isset($info['audio']['dataformat']) ? $info['audio']['dataformat'] : '') {
case 'wavpack':
case 'wvc':
break;
default:
unset($info['fileformat']);
unset($info['audio']);
unset($info['wavpack']);
break;
}
return false;
}
$info['wavpack']['blockheader']['track_number'] = ord($wavpackheader[10]);
// unused
$info['wavpack']['blockheader']['index_number'] = ord($wavpackheader[11]);
// unused
$info['wavpack']['blockheader']['total_samples'] = Utils::LittleEndian2Int(substr($wavpackheader, 12, 4));
$info['wavpack']['blockheader']['block_index'] = Utils::LittleEndian2Int(substr($wavpackheader, 16, 4));
$info['wavpack']['blockheader']['block_samples'] = Utils::LittleEndian2Int(substr($wavpackheader, 20, 4));
$info['wavpack']['blockheader']['flags_raw'] = Utils::LittleEndian2Int(substr($wavpackheader, 24, 4));
$info['wavpack']['blockheader']['crc'] = Utils::LittleEndian2Int(substr($wavpackheader, 28, 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);
$info['audio']['lossless'] = !$info['wavpack']['blockheader']['flags']['hybrid'];
}
while (!feof($this->getid3->fp) && $this->ftell() < $blockheader_offset + $blockheader_size + 8) {
$metablock = array('offset' => $this->ftell());
$metablockheader = $this->fread(2);
if (feof($this->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 .= $this->fread(2);
}
$metablock['size'] = Utils::LittleEndian2Int(substr($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'] = $this->fread($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
$this->fseek($metablock['offset'] + ($metablock['large_block'] ? 4 : 2) + $metablock['size']);
break;
default:
$info['warning'][] = 'Unexpected metablock type "0x' . str_pad(dechex($metablock['function_id']), 2, '0', STR_PAD_LEFT) . '" at offset ' . $metablock['offset'];
$this->fseek($metablock['offset'] + ($metablock['large_block'] ? 4 : 2) + $metablock['size']);
break;
}
switch ($metablock['function_id']) {
case 0x21:
// ID_RIFF_HEADER
$original_wav_filesize = Utils::LittleEndian2Int(substr($metablock['data'], 4, 4));
$getid3_temp = new GetID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_riff = new Riff($getid3_temp);
$getid3_riff->ParseRIFFdata($metablock['data']);
$metablock['riff'] = $getid3_temp->info['riff'];
$info['audio']['sample_rate'] = $getid3_temp->info['riff']['raw']['fmt ']['nSamplesPerSec'];
unset($getid3_riff, $getid3_temp);
$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'];
$info['playtime_seconds'] = $info['wavpack']['blockheader']['total_samples'] / $info['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'];
$startoffset = $metablock['offset'] + ($metablock['large_block'] ? 4 : 2);
$getid3_temp = new GetID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataend'] = $info['avdataend'];
//$getid3_temp->info['fileformat'] = 'riff';
$getid3_riff = new Riff($getid3_temp);
$metablock['riff'] = $getid3_riff->ParseRIFF($startoffset, $startoffset + $metablock['size']);
if (!empty($metablock['riff']['INFO'])) {
Riff::parseComments($metablock['riff']['INFO'], $metablock['comments']);
$info['tags']['riff'] = $metablock['comments'];
}
unset($getid3_temp, $getid3_riff);
break;
case 0x23:
// ID_REPLAY_GAIN
$info['warning'][] = 'WavPack "Replay Gain" contents not yet handled by getID3() in metablock at offset ' . $metablock['offset'];
break;
case 0x24:
// ID_CUESHEET
$info['warning'][] = 'WavPack "Cuesheet" contents not yet handled by getID3() in metablock at offset ' . $metablock['offset'];
break;
case 0x25:
// ID_CONFIG_BLOCK
$metablock['flags_raw'] = Utils::LittleEndian2Int(substr($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'];
$info['audio']['encoder_options'] = '';
if ($info['wavpack']['blockheader']['flags']['hybrid']) {
$info['audio']['encoder_options'] .= ' -b???';
}
$info['audio']['encoder_options'] .= $metablock['flags']['adobe_mode'] ? ' -a' : '';
$info['audio']['encoder_options'] .= $metablock['flags']['optimize_wvc'] ? ' -cc' : '';
$info['audio']['encoder_options'] .= $metablock['flags']['create_exe'] ? ' -e' : '';
$info['audio']['encoder_options'] .= $metablock['flags']['fast_flag'] ? ' -f' : '';
$info['audio']['encoder_options'] .= $metablock['flags']['joint_override'] ? ' -j?' : '';
$info['audio']['encoder_options'] .= $metablock['flags']['high_flag'] ? ' -h' : '';
$info['audio']['encoder_options'] .= $metablock['flags']['md5_checksum'] ? ' -m' : '';
$info['audio']['encoder_options'] .= $metablock['flags']['calc_noise'] ? ' -n' : '';
$info['audio']['encoder_options'] .= $metablock['flags']['shape_override'] ? ' -s?' : '';
$info['audio']['encoder_options'] .= $metablock['flags']['extra_mode'] ? ' -x?' : '';
if (!empty($info['audio']['encoder_options'])) {
$info['audio']['encoder_options'] = trim($info['audio']['encoder_options']);
} elseif (isset($info['audio']['encoder_options'])) {
unset($info['audio']['encoder_options']);
}
break;
case 0x26:
// ID_MD5_CHECKSUM
if (strlen($metablock['data']) == 16) {
$info['md5_data_source'] = strtolower(Utils::PrintHexBytes($metablock['data'], true, false, false));
} else {
$info['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;
}
}
}
$info['audio']['encoder'] = 'WavPack v' . $info['wavpack']['blockheader']['major_version'] . '.' . str_pad($info['wavpack']['blockheader']['minor_version'], 2, '0', STR_PAD_LEFT);
$info['audio']['bits_per_sample'] = $info['wavpack']['blockheader']['flags']['bytes_per_sample'] * 8;
$info['audio']['channels'] = $info['wavpack']['blockheader']['flags']['mono'] ? 1 : 2;
if (!empty($info['playtime_seconds'])) {
$info['audio']['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['playtime_seconds'];
} else {
$info['audio']['dataformat'] = 'wvc';
}
return true;
}
public function Analyze()
{
$info =& $this->getid3->info;
// initialize these values to an empty array, otherwise they default to NULL
// and you can't append array values to a NULL value
$info['riff'] = array('raw' => array());
// Shortcuts
$thisfile_riff =& $info['riff'];
$thisfile_riff_raw =& $thisfile_riff['raw'];
$thisfile_audio =& $info['audio'];
$thisfile_video =& $info['video'];
$thisfile_audio_dataformat =& $thisfile_audio['dataformat'];
$thisfile_riff_audio =& $thisfile_riff['audio'];
$thisfile_riff_video =& $thisfile_riff['video'];
$Original['avdataoffset'] = $info['avdataoffset'];
$Original['avdataend'] = $info['avdataend'];
$this->fseek($info['avdataoffset']);
$RIFFheader = $this->fread(12);
$offset = $this->ftell();
$RIFFtype = substr($RIFFheader, 0, 4);
$RIFFsize = substr($RIFFheader, 4, 4);
$RIFFsubtype = substr($RIFFheader, 8, 4);
switch ($RIFFtype) {
case 'FORM':
// AIFF, AIFC
//$info['fileformat'] = 'aiff';
$this->container = 'aiff';
$thisfile_riff['header_size'] = $this->EitherEndian2Int($RIFFsize);
$thisfile_riff[$RIFFsubtype] = $this->ParseRIFF($offset, $offset + $thisfile_riff['header_size'] - 4);
break;
case 'RIFF':
// AVI, WAV, etc
// AVI, WAV, etc
case 'SDSS':
// SDSS is identical to RIFF, just renamed. Used by SmartSound QuickTracks (www.smartsound.com)
// SDSS is identical to RIFF, just renamed. Used by SmartSound QuickTracks (www.smartsound.com)
case 'RMP3':
// RMP3 is identical to RIFF, just renamed. Used by [unknown program] when creating RIFF-MP3s
//$info['fileformat'] = 'riff';
$this->container = 'riff';
$thisfile_riff['header_size'] = $this->EitherEndian2Int($RIFFsize);
if ($RIFFsubtype == 'RMP3') {
// RMP3 is identical to WAVE, just renamed. Used by [unknown program] when creating RIFF-MP3s
$RIFFsubtype = 'WAVE';
}
if ($RIFFsubtype != 'AMV ') {
// AMV files are RIFF-AVI files with parts of the spec deliberately broken, such as chunk size fields hardcoded to zero (because players known in hardware that these fields are always a certain size
// Handled separately in ParseRIFFAMV()
$thisfile_riff[$RIFFsubtype] = $this->ParseRIFF($offset, $offset + $thisfile_riff['header_size'] - 4);
}
if ($info['avdataend'] - $info['filesize'] == 1) {
// LiteWave appears to incorrectly *not* pad actual output file
// to nearest WORD boundary so may appear to be short by one
// byte, in which case - skip warning
$info['avdataend'] = $info['filesize'];
}
$nextRIFFoffset = $Original['avdataoffset'] + 8 + $thisfile_riff['header_size'];
// 8 = "RIFF" + 32-bit offset
while ($nextRIFFoffset < min($info['filesize'], $info['avdataend'])) {
try {
$this->fseek($nextRIFFoffset);
} catch (Exception $e) {
if ($e->getCode() == 10) {
//$this->warning('RIFF parser: '.$e->getMessage());
$this->error('AVI extends beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB and PHP filesystem functions cannot read that far, playtime may be wrong');
$this->warning('[avdataend] value may be incorrect, multiple AVIX chunks may be present');
break;
} else {
throw $e;
}
}
$nextRIFFheader = $this->fread(12);
if ($nextRIFFoffset == $info['avdataend'] - 1) {
if (substr($nextRIFFheader, 0, 1) == "") {
// RIFF padded to WORD boundary, we're actually already at the end
break;
}
}
$nextRIFFheaderID = substr($nextRIFFheader, 0, 4);
$nextRIFFsize = $this->EitherEndian2Int(substr($nextRIFFheader, 4, 4));
$nextRIFFtype = substr($nextRIFFheader, 8, 4);
$chunkdata = array();
$chunkdata['offset'] = $nextRIFFoffset + 8;
$chunkdata['size'] = $nextRIFFsize;
$nextRIFFoffset = $chunkdata['offset'] + $chunkdata['size'];
switch ($nextRIFFheaderID) {
case 'RIFF':
$chunkdata['chunks'] = $this->ParseRIFF($chunkdata['offset'] + 4, $nextRIFFoffset);
if (!isset($thisfile_riff[$nextRIFFtype])) {
$thisfile_riff[$nextRIFFtype] = array();
}
$thisfile_riff[$nextRIFFtype][] = $chunkdata;
break;
case 'AMV ':
unset($info['riff']);
$info['amv'] = $this->ParseRIFFAMV($chunkdata['offset'] + 4, $nextRIFFoffset);
break;
case 'JUNK':
// ignore
$thisfile_riff[$nextRIFFheaderID][] = $chunkdata;
break;
case 'IDVX':
$info['divxtag']['comments'] = self::ParseDIVXTAG($this->fread($chunkdata['size']));
break;
default:
if ($info['filesize'] == $chunkdata['offset'] - 8 + 128) {
$DIVXTAG = $nextRIFFheader . $this->fread(128 - 12);
if (substr($DIVXTAG, -7) == 'DIVXTAG') {
// DIVXTAG is supposed to be inside an IDVX chunk in a LIST chunk, but some bad encoders just slap it on the end of a file
$this->warning('Found wrongly-structured DIVXTAG at offset ' . ($this->ftell() - 128) . ', parsing anyway');
$info['divxtag']['comments'] = self::ParseDIVXTAG($DIVXTAG);
break 2;
}
}
$this->warning('Expecting "RIFF|JUNK|IDVX" at ' . $nextRIFFoffset . ', found "' . $nextRIFFheaderID . '" (' . Utils::PrintHexBytes($nextRIFFheaderID) . ') - skipping rest of file');
break 2;
}
}
if ($RIFFsubtype == 'WAVE') {
$thisfile_riff_WAVE =& $thisfile_riff['WAVE'];
}
break;
default:
$this->error('Cannot parse RIFF (this is maybe not a RIFF / WAV / AVI file?) - expecting "FORM|RIFF|SDSS|RMP3" found "' . $RIFFsubtype . '" instead');
//unset($info['fileformat']);
return false;
}
$streamindex = 0;
switch ($RIFFsubtype) {
// http://en.wikipedia.org/wiki/Wav
case 'WAVE':
$info['fileformat'] = 'wav';
if (empty($thisfile_audio['bitrate_mode'])) {
$thisfile_audio['bitrate_mode'] = 'cbr';
}
if (empty($thisfile_audio_dataformat)) {
$thisfile_audio_dataformat = 'wav';
}
if (isset($thisfile_riff_WAVE['data'][0]['offset'])) {
$info['avdataoffset'] = $thisfile_riff_WAVE['data'][0]['offset'] + 8;
$info['avdataend'] = $info['avdataoffset'] + $thisfile_riff_WAVE['data'][0]['size'];
}
if (isset($thisfile_riff_WAVE['fmt '][0]['data'])) {
$thisfile_riff_audio[$streamindex] = self::parseWAVEFORMATex($thisfile_riff_WAVE['fmt '][0]['data']);
$thisfile_audio['wformattag'] = $thisfile_riff_audio[$streamindex]['raw']['wFormatTag'];
if (!isset($thisfile_riff_audio[$streamindex]['bitrate']) || $thisfile_riff_audio[$streamindex]['bitrate'] == 0) {
$info['error'][] = 'Corrupt RIFF file: bitrate_audio == zero';
return false;
}
$thisfile_riff_raw['fmt '] = $thisfile_riff_audio[$streamindex]['raw'];
unset($thisfile_riff_audio[$streamindex]['raw']);
$thisfile_audio['streams'][$streamindex] = $thisfile_riff_audio[$streamindex];
$thisfile_audio = Utils::array_merge_noclobber($thisfile_audio, $thisfile_riff_audio[$streamindex]);
if (substr($thisfile_audio['codec'], 0, strlen('unknown: 0x')) == 'unknown: 0x') {
$info['warning'][] = 'Audio codec = ' . $thisfile_audio['codec'];
}
$thisfile_audio['bitrate'] = $thisfile_riff_audio[$streamindex]['bitrate'];
if (empty($info['playtime_seconds'])) {
// may already be set (e.g. DTS-WAV)
$info['playtime_seconds'] = (double) (($info['avdataend'] - $info['avdataoffset']) * 8 / $thisfile_audio['bitrate']);
}
$thisfile_audio['lossless'] = false;
if (isset($thisfile_riff_WAVE['data'][0]['offset']) && isset($thisfile_riff_raw['fmt ']['wFormatTag'])) {
switch ($thisfile_riff_raw['fmt ']['wFormatTag']) {
case 0x1:
// PCM
$thisfile_audio['lossless'] = true;
break;
case 0x2000:
// AC-3
$thisfile_audio_dataformat = 'ac3';
break;
default:
// do nothing
break;
}
}
$thisfile_audio['streams'][$streamindex]['wformattag'] = $thisfile_audio['wformattag'];
$thisfile_audio['streams'][$streamindex]['bitrate_mode'] = $thisfile_audio['bitrate_mode'];
$thisfile_audio['streams'][$streamindex]['lossless'] = $thisfile_audio['lossless'];
$thisfile_audio['streams'][$streamindex]['dataformat'] = $thisfile_audio_dataformat;
}
if (isset($thisfile_riff_WAVE['rgad'][0]['data'])) {
// shortcuts
$rgadData =& $thisfile_riff_WAVE['rgad'][0]['data'];
$thisfile_riff_raw['rgad'] = array('track' => array(), 'album' => array());
$thisfile_riff_raw_rgad =& $thisfile_riff_raw['rgad'];
$thisfile_riff_raw_rgad_track =& $thisfile_riff_raw_rgad['track'];
$thisfile_riff_raw_rgad_album =& $thisfile_riff_raw_rgad['album'];
$thisfile_riff_raw_rgad['fPeakAmplitude'] = Utils::LittleEndian2Float(substr($rgadData, 0, 4));
$thisfile_riff_raw_rgad['nRadioRgAdjust'] = $this->EitherEndian2Int(substr($rgadData, 4, 2));
$thisfile_riff_raw_rgad['nAudiophileRgAdjust'] = $this->EitherEndian2Int(substr($rgadData, 6, 2));
$nRadioRgAdjustBitstring = str_pad(Utils::Dec2Bin($thisfile_riff_raw_rgad['nRadioRgAdjust']), 16, '0', STR_PAD_LEFT);
$nAudiophileRgAdjustBitstring = str_pad(Utils::Dec2Bin($thisfile_riff_raw_rgad['nAudiophileRgAdjust']), 16, '0', STR_PAD_LEFT);
$thisfile_riff_raw_rgad_track['name'] = Utils::Bin2Dec(substr($nRadioRgAdjustBitstring, 0, 3));
$thisfile_riff_raw_rgad_track['originator'] = Utils::Bin2Dec(substr($nRadioRgAdjustBitstring, 3, 3));
$thisfile_riff_raw_rgad_track['signbit'] = Utils::Bin2Dec(substr($nRadioRgAdjustBitstring, 6, 1));
$thisfile_riff_raw_rgad_track['adjustment'] = Utils::Bin2Dec(substr($nRadioRgAdjustBitstring, 7, 9));
$thisfile_riff_raw_rgad_album['name'] = Utils::Bin2Dec(substr($nAudiophileRgAdjustBitstring, 0, 3));
$thisfile_riff_raw_rgad_album['originator'] = Utils::Bin2Dec(substr($nAudiophileRgAdjustBitstring, 3, 3));
$thisfile_riff_raw_rgad_album['signbit'] = Utils::Bin2Dec(substr($nAudiophileRgAdjustBitstring, 6, 1));
$thisfile_riff_raw_rgad_album['adjustment'] = Utils::Bin2Dec(substr($nAudiophileRgAdjustBitstring, 7, 9));
$thisfile_riff['rgad']['peakamplitude'] = $thisfile_riff_raw_rgad['fPeakAmplitude'];
if ($thisfile_riff_raw_rgad_track['name'] != 0 && $thisfile_riff_raw_rgad_track['originator'] != 0) {
$thisfile_riff['rgad']['track']['name'] = Utils::RGADnameLookup($thisfile_riff_raw_rgad_track['name']);
$thisfile_riff['rgad']['track']['originator'] = Utils::RGADoriginatorLookup($thisfile_riff_raw_rgad_track['originator']);
$thisfile_riff['rgad']['track']['adjustment'] = Utils::RGADadjustmentLookup($thisfile_riff_raw_rgad_track['adjustment'], $thisfile_riff_raw_rgad_track['signbit']);
}
if ($thisfile_riff_raw_rgad_album['name'] != 0 && $thisfile_riff_raw_rgad_album['originator'] != 0) {
$thisfile_riff['rgad']['album']['name'] = Utils::RGADnameLookup($thisfile_riff_raw_rgad_album['name']);
$thisfile_riff['rgad']['album']['originator'] = Utils::RGADoriginatorLookup($thisfile_riff_raw_rgad_album['originator']);
$thisfile_riff['rgad']['album']['adjustment'] = Utils::RGADadjustmentLookup($thisfile_riff_raw_rgad_album['adjustment'], $thisfile_riff_raw_rgad_album['signbit']);
}
}
if (isset($thisfile_riff_WAVE['fact'][0]['data'])) {
$thisfile_riff_raw['fact']['NumberOfSamples'] = $this->EitherEndian2Int(substr($thisfile_riff_WAVE['fact'][0]['data'], 0, 4));
// This should be a good way of calculating exact playtime,
// but some sample files have had incorrect number of samples,
// so cannot use this method
// if (!empty($thisfile_riff_raw['fmt ']['nSamplesPerSec'])) {
// $info['playtime_seconds'] = (float) $thisfile_riff_raw['fact']['NumberOfSamples'] / $thisfile_riff_raw['fmt ']['nSamplesPerSec'];
// }
}
if (!empty($thisfile_riff_raw['fmt ']['nAvgBytesPerSec'])) {
$thisfile_audio['bitrate'] = Utils::CastAsInt($thisfile_riff_raw['fmt ']['nAvgBytesPerSec'] * 8);
}
if (isset($thisfile_riff_WAVE['bext'][0]['data'])) {
// shortcut
$thisfile_riff_WAVE_bext_0 =& $thisfile_riff_WAVE['bext'][0];
$thisfile_riff_WAVE_bext_0['title'] = trim(substr($thisfile_riff_WAVE_bext_0['data'], 0, 256));
$thisfile_riff_WAVE_bext_0['author'] = trim(substr($thisfile_riff_WAVE_bext_0['data'], 256, 32));
$thisfile_riff_WAVE_bext_0['reference'] = trim(substr($thisfile_riff_WAVE_bext_0['data'], 288, 32));
$thisfile_riff_WAVE_bext_0['origin_date'] = substr($thisfile_riff_WAVE_bext_0['data'], 320, 10);
$thisfile_riff_WAVE_bext_0['origin_time'] = substr($thisfile_riff_WAVE_bext_0['data'], 330, 8);
$thisfile_riff_WAVE_bext_0['time_reference'] = Utils::LittleEndian2Int(substr($thisfile_riff_WAVE_bext_0['data'], 338, 8));
$thisfile_riff_WAVE_bext_0['bwf_version'] = Utils::LittleEndian2Int(substr($thisfile_riff_WAVE_bext_0['data'], 346, 1));
$thisfile_riff_WAVE_bext_0['reserved'] = substr($thisfile_riff_WAVE_bext_0['data'], 347, 254);
$thisfile_riff_WAVE_bext_0['coding_history'] = explode("\r\n", trim(substr($thisfile_riff_WAVE_bext_0['data'], 601)));
if (preg_match('#^([0-9]{4}).([0-9]{2}).([0-9]{2})$#', $thisfile_riff_WAVE_bext_0['origin_date'], $matches_bext_date)) {
if (preg_match('#^([0-9]{2}).([0-9]{2}).([0-9]{2})$#', $thisfile_riff_WAVE_bext_0['origin_time'], $matches_bext_time)) {
list($dummy, $bext_timestamp['year'], $bext_timestamp['month'], $bext_timestamp['day']) = $matches_bext_date;
list($dummy, $bext_timestamp['hour'], $bext_timestamp['minute'], $bext_timestamp['second']) = $matches_bext_time;
$thisfile_riff_WAVE_bext_0['origin_date_unix'] = gmmktime($bext_timestamp['hour'], $bext_timestamp['minute'], $bext_timestamp['second'], $bext_timestamp['month'], $bext_timestamp['day'], $bext_timestamp['year']);
} else {
$info['warning'][] = 'RIFF.WAVE.BEXT.origin_time is invalid';
}
} else {
$info['warning'][] = 'RIFF.WAVE.BEXT.origin_date is invalid';
}
$thisfile_riff['comments']['author'][] = $thisfile_riff_WAVE_bext_0['author'];
$thisfile_riff['comments']['title'][] = $thisfile_riff_WAVE_bext_0['title'];
}
if (isset($thisfile_riff_WAVE['MEXT'][0]['data'])) {
// shortcut
$thisfile_riff_WAVE_MEXT_0 =& $thisfile_riff_WAVE['MEXT'][0];
$thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] = Utils::LittleEndian2Int(substr($thisfile_riff_WAVE_MEXT_0['data'], 0, 2));
$thisfile_riff_WAVE_MEXT_0['flags']['homogenous'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] & 0x1);
if ($thisfile_riff_WAVE_MEXT_0['flags']['homogenous']) {
$thisfile_riff_WAVE_MEXT_0['flags']['padding'] = $thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] & 0x2 ? false : true;
$thisfile_riff_WAVE_MEXT_0['flags']['22_or_44'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] & 0x4);
$thisfile_riff_WAVE_MEXT_0['flags']['free_format'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] & 0x8);
$thisfile_riff_WAVE_MEXT_0['nominal_frame_size'] = Utils::LittleEndian2Int(substr($thisfile_riff_WAVE_MEXT_0['data'], 2, 2));
}
$thisfile_riff_WAVE_MEXT_0['anciliary_data_length'] = Utils::LittleEndian2Int(substr($thisfile_riff_WAVE_MEXT_0['data'], 6, 2));
$thisfile_riff_WAVE_MEXT_0['raw']['anciliary_data_def'] = Utils::LittleEndian2Int(substr($thisfile_riff_WAVE_MEXT_0['data'], 8, 2));
$thisfile_riff_WAVE_MEXT_0['flags']['anciliary_data_left'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['anciliary_data_def'] & 0x1);
$thisfile_riff_WAVE_MEXT_0['flags']['anciliary_data_free'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['anciliary_data_def'] & 0x2);
$thisfile_riff_WAVE_MEXT_0['flags']['anciliary_data_right'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['anciliary_data_def'] & 0x4);
}
if (isset($thisfile_riff_WAVE['cart'][0]['data'])) {
// shortcut
$thisfile_riff_WAVE_cart_0 =& $thisfile_riff_WAVE['cart'][0];
$thisfile_riff_WAVE_cart_0['version'] = substr($thisfile_riff_WAVE_cart_0['data'], 0, 4);
$thisfile_riff_WAVE_cart_0['title'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 4, 64));
$thisfile_riff_WAVE_cart_0['artist'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 68, 64));
$thisfile_riff_WAVE_cart_0['cut_id'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 132, 64));
$thisfile_riff_WAVE_cart_0['client_id'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 196, 64));
$thisfile_riff_WAVE_cart_0['category'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 260, 64));
$thisfile_riff_WAVE_cart_0['classification'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 324, 64));
$thisfile_riff_WAVE_cart_0['out_cue'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 388, 64));
$thisfile_riff_WAVE_cart_0['start_date'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 452, 10));
$thisfile_riff_WAVE_cart_0['start_time'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 462, 8));
$thisfile_riff_WAVE_cart_0['end_date'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 470, 10));
$thisfile_riff_WAVE_cart_0['end_time'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 480, 8));
$thisfile_riff_WAVE_cart_0['producer_app_id'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 488, 64));
$thisfile_riff_WAVE_cart_0['producer_app_version'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 552, 64));
$thisfile_riff_WAVE_cart_0['user_defined_text'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 616, 64));
$thisfile_riff_WAVE_cart_0['zero_db_reference'] = Utils::LittleEndian2Int(substr($thisfile_riff_WAVE_cart_0['data'], 680, 4), true);
for ($i = 0; $i < 8; $i++) {
$thisfile_riff_WAVE_cart_0['post_time'][$i]['usage_fourcc'] = substr($thisfile_riff_WAVE_cart_0['data'], 684 + $i * 8, 4);
$thisfile_riff_WAVE_cart_0['post_time'][$i]['timer_value'] = Utils::LittleEndian2Int(substr($thisfile_riff_WAVE_cart_0['data'], 684 + $i * 8 + 4, 4));
}
$thisfile_riff_WAVE_cart_0['url'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 748, 1024));
$thisfile_riff_WAVE_cart_0['tag_text'] = explode("\r\n", trim(substr($thisfile_riff_WAVE_cart_0['data'], 1772)));
$thisfile_riff['comments']['artist'][] = $thisfile_riff_WAVE_cart_0['artist'];
$thisfile_riff['comments']['title'][] = $thisfile_riff_WAVE_cart_0['title'];
}
if (isset($thisfile_riff_WAVE['SNDM'][0]['data'])) {
// SoundMiner metadata
// shortcuts
$thisfile_riff_WAVE_SNDM_0 =& $thisfile_riff_WAVE['SNDM'][0];
$thisfile_riff_WAVE_SNDM_0_data =& $thisfile_riff_WAVE_SNDM_0['data'];
$SNDM_startoffset = 0;
$SNDM_endoffset = $thisfile_riff_WAVE_SNDM_0['size'];
while ($SNDM_startoffset < $SNDM_endoffset) {
$SNDM_thisTagOffset = 0;
$SNDM_thisTagSize = Utils::BigEndian2Int(substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, 4));
$SNDM_thisTagOffset += 4;
$SNDM_thisTagKey = substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, 4);
$SNDM_thisTagOffset += 4;
$SNDM_thisTagDataSize = Utils::BigEndian2Int(substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, 2));
$SNDM_thisTagOffset += 2;
$SNDM_thisTagDataFlags = Utils::BigEndian2Int(substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, 2));
$SNDM_thisTagOffset += 2;
$SNDM_thisTagDataText = substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, $SNDM_thisTagDataSize);
$SNDM_thisTagOffset += $SNDM_thisTagDataSize;
if ($SNDM_thisTagSize != 4 + 4 + 2 + 2 + $SNDM_thisTagDataSize) {
$info['warning'][] = 'RIFF.WAVE.SNDM.data contains tag not expected length (expected: ' . $SNDM_thisTagSize . ', found: ' . (4 + 4 + 2 + 2 + $SNDM_thisTagDataSize) . ') at offset ' . $SNDM_startoffset . ' (file offset ' . ($thisfile_riff_WAVE_SNDM_0['offset'] + $SNDM_startoffset) . ')';
break;
} elseif ($SNDM_thisTagSize <= 0) {
$info['warning'][] = 'RIFF.WAVE.SNDM.data contains zero-size tag at offset ' . $SNDM_startoffset . ' (file offset ' . ($thisfile_riff_WAVE_SNDM_0['offset'] + $SNDM_startoffset) . ')';
break;
}
$SNDM_startoffset += $SNDM_thisTagSize;
$thisfile_riff_WAVE_SNDM_0['parsed_raw'][$SNDM_thisTagKey] = $SNDM_thisTagDataText;
if ($parsedkey = self::waveSNDMtagLookup($SNDM_thisTagKey)) {
$thisfile_riff_WAVE_SNDM_0['parsed'][$parsedkey] = $SNDM_thisTagDataText;
} else {
$info['warning'][] = 'RIFF.WAVE.SNDM contains unknown tag "' . $SNDM_thisTagKey . '" at offset ' . $SNDM_startoffset . ' (file offset ' . ($thisfile_riff_WAVE_SNDM_0['offset'] + $SNDM_startoffset) . ')';
}
}
$tagmapping = array('tracktitle' => 'title', 'category' => 'genre', 'cdtitle' => 'album', 'tracktitle' => 'title');
foreach ($tagmapping as $fromkey => $tokey) {
if (isset($thisfile_riff_WAVE_SNDM_0['parsed'][$fromkey])) {
$thisfile_riff['comments'][$tokey][] = $thisfile_riff_WAVE_SNDM_0['parsed'][$fromkey];
}
}
}
if (isset($thisfile_riff_WAVE['iXML'][0]['data'])) {
// requires functions simplexml_load_string and get_object_vars
if ($parsedXML = Utils::XML2array($thisfile_riff_WAVE['iXML'][0]['data'])) {
$thisfile_riff_WAVE['iXML'][0]['parsed'] = $parsedXML;
if (isset($parsedXML['SPEED']['MASTER_SPEED'])) {
@(list($numerator, $denominator) = explode('/', $parsedXML['SPEED']['MASTER_SPEED']));
$thisfile_riff_WAVE['iXML'][0]['master_speed'] = $numerator / ($denominator ? $denominator : 1000);
}
if (isset($parsedXML['SPEED']['TIMECODE_RATE'])) {
@(list($numerator, $denominator) = explode('/', $parsedXML['SPEED']['TIMECODE_RATE']));
$thisfile_riff_WAVE['iXML'][0]['timecode_rate'] = $numerator / ($denominator ? $denominator : 1000);
}
if (isset($parsedXML['SPEED']['TIMESTAMP_SAMPLES_SINCE_MIDNIGHT_LO']) && !empty($parsedXML['SPEED']['TIMESTAMP_SAMPLE_RATE']) && !empty($thisfile_riff_WAVE['iXML'][0]['timecode_rate'])) {
$samples_since_midnight = floatval(ltrim($parsedXML['SPEED']['TIMESTAMP_SAMPLES_SINCE_MIDNIGHT_HI'] . $parsedXML['SPEED']['TIMESTAMP_SAMPLES_SINCE_MIDNIGHT_LO'], '0'));
$thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] = $samples_since_midnight / $parsedXML['SPEED']['TIMESTAMP_SAMPLE_RATE'];
$h = floor($thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] / 3600);
$m = floor(($thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] - $h * 3600) / 60);
$s = floor($thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] - $h * 3600 - $m * 60);
$f = ($thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] - $h * 3600 - $m * 60 - $s) * $thisfile_riff_WAVE['iXML'][0]['timecode_rate'];
$thisfile_riff_WAVE['iXML'][0]['timecode_string'] = sprintf('%02d:%02d:%02d:%05.2f', $h, $m, $s, $f);
$thisfile_riff_WAVE['iXML'][0]['timecode_string_round'] = sprintf('%02d:%02d:%02d:%02d', $h, $m, $s, round($f));
}
unset($parsedXML);
}
}
if (!isset($thisfile_audio['bitrate']) && isset($thisfile_riff_audio[$streamindex]['bitrate'])) {
$thisfile_audio['bitrate'] = $thisfile_riff_audio[$streamindex]['bitrate'];
$info['playtime_seconds'] = (double) (($info['avdataend'] - $info['avdataoffset']) * 8 / $thisfile_audio['bitrate']);
}
if (!empty($info['wavpack'])) {
$thisfile_audio_dataformat = 'wavpack';
$thisfile_audio['bitrate_mode'] = 'vbr';
$thisfile_audio['encoder'] = 'WavPack v' . $info['wavpack']['version'];
// Reset to the way it was - RIFF parsing will have messed this up
$info['avdataend'] = $Original['avdataend'];
$thisfile_audio['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['playtime_seconds'];
$this->fseek($info['avdataoffset'] - 44);
$RIFFdata = $this->fread(44);
$OrignalRIFFheaderSize = Utils::LittleEndian2Int(substr($RIFFdata, 4, 4)) + 8;
$OrignalRIFFdataSize = Utils::LittleEndian2Int(substr($RIFFdata, 40, 4)) + 44;
if ($OrignalRIFFheaderSize > $OrignalRIFFdataSize) {
$info['avdataend'] -= $OrignalRIFFheaderSize - $OrignalRIFFdataSize;
$this->fseek($info['avdataend']);
$RIFFdata .= $this->fread($OrignalRIFFheaderSize - $OrignalRIFFdataSize);
}
// 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
$RIFFdata = substr($RIFFdata, 0, 36) . substr($RIFFdata, 44) . substr($RIFFdata, 36, 8);
$getid3_riff = new Riff($this->getid3);
$getid3_riff->ParseRIFFdata($RIFFdata);
unset($getid3_riff);
}
if (isset($thisfile_riff_raw['fmt ']['wFormatTag'])) {
switch ($thisfile_riff_raw['fmt ']['wFormatTag']) {
case 0x1:
// PCM
if (!empty($info['ac3'])) {
// Dolby Digital WAV files masquerade as PCM-WAV, but they're not
$thisfile_audio['wformattag'] = 0x2000;
$thisfile_audio['codec'] = self::wFormatTagLookup($thisfile_audio['wformattag']);
$thisfile_audio['lossless'] = false;
$thisfile_audio['bitrate'] = $info['ac3']['bitrate'];
$thisfile_audio['sample_rate'] = $info['ac3']['sample_rate'];
}
if (!empty($info['dts'])) {
// Dolby DTS files masquerade as PCM-WAV, but they're not
$thisfile_audio['wformattag'] = 0x2001;
$thisfile_audio['codec'] = self::wFormatTagLookup($thisfile_audio['wformattag']);
$thisfile_audio['lossless'] = false;
$thisfile_audio['bitrate'] = $info['dts']['bitrate'];
$thisfile_audio['sample_rate'] = $info['dts']['sample_rate'];
}
break;
case 0x8ae:
// ClearJump LiteWave
$thisfile_audio['bitrate_mode'] = 'vbr';
$thisfile_audio_dataformat = 'litewave';
//typedef struct tagSLwFormat {
// WORD m_wCompFormat; // low byte defines compression method, high byte is compression flags
// DWORD m_dwScale; // scale factor for lossy compression
// DWORD m_dwBlockSize; // number of samples in encoded blocks
// WORD m_wQuality; // alias for the scale factor
// WORD m_wMarkDistance; // distance between marks in bytes
// WORD m_wReserved;
//
// //following paramters are ignored if CF_FILESRC is not set
// DWORD m_dwOrgSize; // original file size in bytes
// WORD m_bFactExists; // indicates if 'fact' chunk exists in the original file
// DWORD m_dwRiffChunkSize; // riff chunk size in the original file
//
// PCMWAVEFORMAT m_OrgWf; // original wave format
// }SLwFormat, *PSLwFormat;
// shortcut
$thisfile_riff['litewave']['raw'] = array();
$riff_litewave =& $thisfile_riff['litewave'];
$riff_litewave_raw =& $riff_litewave['raw'];
$flags = array('compression_method' => 1, 'compression_flags' => 1, 'm_dwScale' => 4, 'm_dwBlockSize' => 4, 'm_wQuality' => 2, 'm_wMarkDistance' => 2, 'm_wReserved' => 2, 'm_dwOrgSize' => 4, 'm_bFactExists' => 2, 'm_dwRiffChunkSize' => 4);
$litewave_offset = 18;
foreach ($flags as $flag => $length) {
$riff_litewave_raw[$flag] = Utils::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], $litewave_offset, $length));
$litewave_offset += $length;
}
//$riff_litewave['quality_factor'] = intval(round((2000 - $riff_litewave_raw['m_dwScale']) / 20));
$riff_litewave['quality_factor'] = $riff_litewave_raw['m_wQuality'];
$riff_litewave['flags']['raw_source'] = $riff_litewave_raw['compression_flags'] & 0x1 ? false : true;
$riff_litewave['flags']['vbr_blocksize'] = $riff_litewave_raw['compression_flags'] & 0x2 ? false : true;
$riff_litewave['flags']['seekpoints'] = (bool) ($riff_litewave_raw['compression_flags'] & 0x4);
$thisfile_audio['lossless'] = $riff_litewave_raw['m_wQuality'] == 100 ? true : false;
$thisfile_audio['encoder_options'] = '-q' . $riff_litewave['quality_factor'];
break;
default:
break;
}
}
if ($info['avdataend'] > $info['filesize']) {
switch (!empty($thisfile_audio_dataformat) ? $thisfile_audio_dataformat : '') {
case 'wavpack':
// WavPack
// WavPack
case 'lpac':
// LPAC
// LPAC
case 'ofr':
// OptimFROG
// OptimFROG
case 'ofs':
// OptimFROG DualStream
// lossless compressed audio formats that keep original RIFF headers - skip warning
break;
case 'litewave':
if ($info['avdataend'] - $info['filesize'] == 1) {
// LiteWave appears to incorrectly *not* pad actual output file
// to nearest WORD boundary so may appear to be short by one
// byte, in which case - skip warning
} else {
// Short by more than one byte, throw warning
$info['warning'][] = 'Probably truncated file - expecting ' . $thisfile_riff[$RIFFsubtype]['data'][0]['size'] . ' bytes of data, only found ' . ($info['filesize'] - $info['avdataoffset']) . ' (short by ' . ($thisfile_riff[$RIFFsubtype]['data'][0]['size'] - ($info['filesize'] - $info['avdataoffset'])) . ' bytes)';
$info['avdataend'] = $info['filesize'];
}
break;
default:
if ($info['avdataend'] - $info['filesize'] == 1 && $thisfile_riff[$RIFFsubtype]['data'][0]['size'] % 2 == 0 && ($info['filesize'] - $info['avdataoffset']) % 2 == 1) {
// output file appears to be incorrectly *not* padded to nearest WORD boundary
// Output less severe warning
$info['warning'][] = 'File should probably be padded to nearest WORD boundary, but it is not (expecting ' . $thisfile_riff[$RIFFsubtype]['data'][0]['size'] . ' bytes of data, only found ' . ($info['filesize'] - $info['avdataoffset']) . ' therefore short by ' . ($thisfile_riff[$RIFFsubtype]['data'][0]['size'] - ($info['filesize'] - $info['avdataoffset'])) . ' bytes)';
$info['avdataend'] = $info['filesize'];
} else {
// Short by more than one byte, throw warning
$info['warning'][] = 'Probably truncated file - expecting ' . $thisfile_riff[$RIFFsubtype]['data'][0]['size'] . ' bytes of data, only found ' . ($info['filesize'] - $info['avdataoffset']) . ' (short by ' . ($thisfile_riff[$RIFFsubtype]['data'][0]['size'] - ($info['filesize'] - $info['avdataoffset'])) . ' bytes)';
$info['avdataend'] = $info['filesize'];
}
break;
}
}
if (!empty($info['mpeg']['audio']['LAME']['audio_bytes'])) {
if ($info['avdataend'] - $info['avdataoffset'] - $info['mpeg']['audio']['LAME']['audio_bytes'] == 1) {
$info['avdataend']--;
$info['warning'][] = 'Extra null byte at end of MP3 data assumed to be RIFF padding and therefore ignored';
}
}
if (isset($thisfile_audio_dataformat) && $thisfile_audio_dataformat == 'ac3') {
unset($thisfile_audio['bits_per_sample']);
if (!empty($info['ac3']['bitrate']) && $info['ac3']['bitrate'] != $thisfile_audio['bitrate']) {
$thisfile_audio['bitrate'] = $info['ac3']['bitrate'];
}
}
break;
// http://en.wikipedia.org/wiki/Audio_Video_Interleave
// http://en.wikipedia.org/wiki/Audio_Video_Interleave
case 'AVI ':
$info['fileformat'] = 'avi';
$info['mime_type'] = 'video/avi';
$thisfile_video['bitrate_mode'] = 'vbr';
// maybe not, but probably
$thisfile_video['dataformat'] = 'avi';
if (isset($thisfile_riff[$RIFFsubtype]['movi']['offset'])) {
$info['avdataoffset'] = $thisfile_riff[$RIFFsubtype]['movi']['offset'] + 8;
if (isset($thisfile_riff['AVIX'])) {
$info['avdataend'] = $thisfile_riff['AVIX'][count($thisfile_riff['AVIX']) - 1]['chunks']['movi']['offset'] + $thisfile_riff['AVIX'][count($thisfile_riff['AVIX']) - 1]['chunks']['movi']['size'];
} else {
$info['avdataend'] = $thisfile_riff['AVI ']['movi']['offset'] + $thisfile_riff['AVI ']['movi']['size'];
}
if ($info['avdataend'] > $info['filesize']) {
$info['warning'][] = 'Probably truncated file - expecting ' . ($info['avdataend'] - $info['avdataoffset']) . ' bytes of data, only found ' . ($info['filesize'] - $info['avdataoffset']) . ' (short by ' . ($info['avdataend'] - $info['filesize']) . ' bytes)';
$info['avdataend'] = $info['filesize'];
}
}
if (isset($thisfile_riff['AVI ']['hdrl']['strl']['indx'])) {
//$bIndexType = array(
// 0x00 => 'AVI_INDEX_OF_INDEXES',
// 0x01 => 'AVI_INDEX_OF_CHUNKS',
// 0x80 => 'AVI_INDEX_IS_DATA',
//);
//$bIndexSubtype = array(
// 0x01 => array(
// 0x01 => 'AVI_INDEX_2FIELD',
// ),
//);
foreach ($thisfile_riff['AVI ']['hdrl']['strl']['indx'] as $streamnumber => $steamdataarray) {
$ahsisd =& $thisfile_riff['AVI ']['hdrl']['strl']['indx'][$streamnumber]['data'];
$thisfile_riff_raw['indx'][$streamnumber]['wLongsPerEntry'] = $this->EitherEndian2Int(substr($ahsisd, 0, 2));
$thisfile_riff_raw['indx'][$streamnumber]['bIndexSubType'] = $this->EitherEndian2Int(substr($ahsisd, 2, 1));
$thisfile_riff_raw['indx'][$streamnumber]['bIndexType'] = $this->EitherEndian2Int(substr($ahsisd, 3, 1));
$thisfile_riff_raw['indx'][$streamnumber]['nEntriesInUse'] = $this->EitherEndian2Int(substr($ahsisd, 4, 4));
$thisfile_riff_raw['indx'][$streamnumber]['dwChunkId'] = substr($ahsisd, 8, 4);
$thisfile_riff_raw['indx'][$streamnumber]['dwReserved'] = $this->EitherEndian2Int(substr($ahsisd, 12, 4));
//$thisfile_riff_raw['indx'][$streamnumber]['bIndexType_name'] = $bIndexType[$thisfile_riff_raw['indx'][$streamnumber]['bIndexType']];
//$thisfile_riff_raw['indx'][$streamnumber]['bIndexSubType_name'] = $bIndexSubtype[$thisfile_riff_raw['indx'][$streamnumber]['bIndexType']][$thisfile_riff_raw['indx'][$streamnumber]['bIndexSubType']];
unset($ahsisd);
}
}
if (isset($thisfile_riff['AVI ']['hdrl']['avih'][$streamindex]['data'])) {
$avihData = $thisfile_riff['AVI ']['hdrl']['avih'][$streamindex]['data'];
// shortcut
$thisfile_riff_raw['avih'] = array();
$thisfile_riff_raw_avih =& $thisfile_riff_raw['avih'];
$thisfile_riff_raw_avih['dwMicroSecPerFrame'] = $this->EitherEndian2Int(substr($avihData, 0, 4));
// frame display rate (or 0L)
if ($thisfile_riff_raw_avih['dwMicroSecPerFrame'] == 0) {
$info['error'][] = 'Corrupt RIFF file: avih.dwMicroSecPerFrame == zero';
return false;
}
$flags = array('dwMaxBytesPerSec', 'dwPaddingGranularity', 'dwFlags', 'dwTotalFrames', 'dwInitialFrames', 'dwStreams', 'dwSuggestedBufferSize', 'dwWidth', 'dwHeight', 'dwScale', 'dwRate', 'dwStart', 'dwLength');
$avih_offset = 4;
foreach ($flags as $flag) {
$thisfile_riff_raw_avih[$flag] = $this->EitherEndian2Int(substr($avihData, $avih_offset, 4));
$avih_offset += 4;
}
$flags = array('hasindex' => 0x10, 'mustuseindex' => 0x20, 'interleaved' => 0x100, 'trustcktype' => 0x800, 'capturedfile' => 0x10000, 'copyrighted' => 0x20010);
foreach ($flags as $flag => $value) {
$thisfile_riff_raw_avih['flags'][$flag] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & $value);
}
// shortcut
$thisfile_riff_video[$streamindex] = array();
$thisfile_riff_video_current =& $thisfile_riff_video[$streamindex];
if ($thisfile_riff_raw_avih['dwWidth'] > 0) {
$thisfile_riff_video_current['frame_width'] = $thisfile_riff_raw_avih['dwWidth'];
$thisfile_video['resolution_x'] = $thisfile_riff_video_current['frame_width'];
}
if ($thisfile_riff_raw_avih['dwHeight'] > 0) {
$thisfile_riff_video_current['frame_height'] = $thisfile_riff_raw_avih['dwHeight'];
$thisfile_video['resolution_y'] = $thisfile_riff_video_current['frame_height'];
}
if ($thisfile_riff_raw_avih['dwTotalFrames'] > 0) {
$thisfile_riff_video_current['total_frames'] = $thisfile_riff_raw_avih['dwTotalFrames'];
$thisfile_video['total_frames'] = $thisfile_riff_video_current['total_frames'];
}
$thisfile_riff_video_current['frame_rate'] = round(1000000 / $thisfile_riff_raw_avih['dwMicroSecPerFrame'], 3);
$thisfile_video['frame_rate'] = $thisfile_riff_video_current['frame_rate'];
}
if (isset($thisfile_riff['AVI ']['hdrl']['strl']['strh'][0]['data'])) {
if (is_array($thisfile_riff['AVI ']['hdrl']['strl']['strh'])) {
for ($i = 0; $i < count($thisfile_riff['AVI ']['hdrl']['strl']['strh']); $i++) {
if (isset($thisfile_riff['AVI ']['hdrl']['strl']['strh'][$i]['data'])) {
$strhData = $thisfile_riff['AVI ']['hdrl']['strl']['strh'][$i]['data'];
$strhfccType = substr($strhData, 0, 4);
if (isset($thisfile_riff['AVI ']['hdrl']['strl']['strf'][$i]['data'])) {
$strfData = $thisfile_riff['AVI ']['hdrl']['strl']['strf'][$i]['data'];
// shortcut
$thisfile_riff_raw_strf_strhfccType_streamindex =& $thisfile_riff_raw['strf'][$strhfccType][$streamindex];
switch ($strhfccType) {
case 'auds':
$thisfile_audio['bitrate_mode'] = 'cbr';
$thisfile_audio_dataformat = 'wav';
if (isset($thisfile_riff_audio) && is_array($thisfile_riff_audio)) {
$streamindex = count($thisfile_riff_audio);
}
$thisfile_riff_audio[$streamindex] = self::parseWAVEFORMATex($strfData);
$thisfile_audio['wformattag'] = $thisfile_riff_audio[$streamindex]['raw']['wFormatTag'];
// shortcut
$thisfile_audio['streams'][$streamindex] = $thisfile_riff_audio[$streamindex];
$thisfile_audio_streams_currentstream =& $thisfile_audio['streams'][$streamindex];
if ($thisfile_audio_streams_currentstream['bits_per_sample'] == 0) {
unset($thisfile_audio_streams_currentstream['bits_per_sample']);
}
$thisfile_audio_streams_currentstream['wformattag'] = $thisfile_audio_streams_currentstream['raw']['wFormatTag'];
unset($thisfile_audio_streams_currentstream['raw']);
// shortcut
$thisfile_riff_raw['strf'][$strhfccType][$streamindex] = $thisfile_riff_audio[$streamindex]['raw'];
unset($thisfile_riff_audio[$streamindex]['raw']);
$thisfile_audio = Utils::array_merge_noclobber($thisfile_audio, $thisfile_riff_audio[$streamindex]);
$thisfile_audio['lossless'] = false;
switch ($thisfile_riff_raw_strf_strhfccType_streamindex['wFormatTag']) {
case 0x1:
// PCM
$thisfile_audio_dataformat = 'wav';
$thisfile_audio['lossless'] = true;
break;
case 0x50:
// MPEG Layer 2 or Layer 1
$thisfile_audio_dataformat = 'mp2';
// Assume Layer-2
break;
case 0x55:
// MPEG Layer 3
$thisfile_audio_dataformat = 'mp3';
break;
case 0xff:
// AAC
$thisfile_audio_dataformat = 'aac';
break;
case 0x161:
// Windows Media v7 / v8 / v9
// Windows Media v7 / v8 / v9
case 0x162:
// Windows Media Professional v9
// Windows Media Professional v9
case 0x163:
// Windows Media Lossess v9
$thisfile_audio_dataformat = 'wma';
break;
case 0x2000:
// AC-3
$thisfile_audio_dataformat = 'ac3';
break;
case 0x2001:
// DTS
$thisfile_audio_dataformat = 'dts';
break;
default:
$thisfile_audio_dataformat = 'wav';
break;
}
$thisfile_audio_streams_currentstream['dataformat'] = $thisfile_audio_dataformat;
$thisfile_audio_streams_currentstream['lossless'] = $thisfile_audio['lossless'];
$thisfile_audio_streams_currentstream['bitrate_mode'] = $thisfile_audio['bitrate_mode'];
break;
case 'iavs':
case 'vids':
// shortcut
$thisfile_riff_raw['strh'][$i] = array();
$thisfile_riff_raw_strh_current =& $thisfile_riff_raw['strh'][$i];
$thisfile_riff_raw_strh_current['fccType'] = substr($strhData, 0, 4);
// same as $strhfccType;
$thisfile_riff_raw_strh_current['fccHandler'] = substr($strhData, 4, 4);
$thisfile_riff_raw_strh_current['dwFlags'] = $this->EitherEndian2Int(substr($strhData, 8, 4));
// Contains AVITF_* flags
$thisfile_riff_raw_strh_current['wPriority'] = $this->EitherEndian2Int(substr($strhData, 12, 2));
$thisfile_riff_raw_strh_current['wLanguage'] = $this->EitherEndian2Int(substr($strhData, 14, 2));
$thisfile_riff_raw_strh_current['dwInitialFrames'] = $this->EitherEndian2Int(substr($strhData, 16, 4));
$thisfile_riff_raw_strh_current['dwScale'] = $this->EitherEndian2Int(substr($strhData, 20, 4));
$thisfile_riff_raw_strh_current['dwRate'] = $this->EitherEndian2Int(substr($strhData, 24, 4));
$thisfile_riff_raw_strh_current['dwStart'] = $this->EitherEndian2Int(substr($strhData, 28, 4));
$thisfile_riff_raw_strh_current['dwLength'] = $this->EitherEndian2Int(substr($strhData, 32, 4));
$thisfile_riff_raw_strh_current['dwSuggestedBufferSize'] = $this->EitherEndian2Int(substr($strhData, 36, 4));
$thisfile_riff_raw_strh_current['dwQuality'] = $this->EitherEndian2Int(substr($strhData, 40, 4));
$thisfile_riff_raw_strh_current['dwSampleSize'] = $this->EitherEndian2Int(substr($strhData, 44, 4));
$thisfile_riff_raw_strh_current['rcFrame'] = $this->EitherEndian2Int(substr($strhData, 48, 4));
$thisfile_riff_video_current['codec'] = self::fourccLookup($thisfile_riff_raw_strh_current['fccHandler']);
$thisfile_video['fourcc'] = $thisfile_riff_raw_strh_current['fccHandler'];
if (!$thisfile_riff_video_current['codec'] && isset($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc']) && self::fourccLookup($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc'])) {
$thisfile_riff_video_current['codec'] = self::fourccLookup($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc']);
$thisfile_video['fourcc'] = $thisfile_riff_raw_strf_strhfccType_streamindex['fourcc'];
}
$thisfile_video['codec'] = $thisfile_riff_video_current['codec'];
$thisfile_video['pixel_aspect_ratio'] = (double) 1;
switch ($thisfile_riff_raw_strh_current['fccHandler']) {
case 'HFYU':
// Huffman Lossless Codec
// Huffman Lossless Codec
case 'IRAW':
// Intel YUV Uncompressed
// Intel YUV Uncompressed
case 'YUY2':
// Uncompressed YUV 4:2:2
$thisfile_video['lossless'] = true;
break;
default:
$thisfile_video['lossless'] = false;
break;
}
switch ($strhfccType) {
case 'vids':
$thisfile_riff_raw_strf_strhfccType_streamindex = self::ParseBITMAPINFOHEADER(substr($strfData, 0, 40), $this->container == 'riff');
$thisfile_video['bits_per_sample'] = $thisfile_riff_raw_strf_strhfccType_streamindex['biBitCount'];
if ($thisfile_riff_video_current['codec'] == 'DV') {
$thisfile_riff_video_current['dv_type'] = 2;
}
break;
case 'iavs':
$thisfile_riff_video_current['dv_type'] = 1;
break;
}
break;
default:
$info['warning'][] = 'Unhandled fccType for stream (' . $i . '): "' . $strhfccType . '"';
break;
}
}
}
if (isset($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc'])) {
$thisfile_video['fourcc'] = $thisfile_riff_raw_strf_strhfccType_streamindex['fourcc'];
if (self::fourccLookup($thisfile_video['fourcc'])) {
$thisfile_riff_video_current['codec'] = self::fourccLookup($thisfile_video['fourcc']);
$thisfile_video['codec'] = $thisfile_riff_video_current['codec'];
}
switch ($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc']) {
case 'HFYU':
// Huffman Lossless Codec
// Huffman Lossless Codec
case 'IRAW':
// Intel YUV Uncompressed
// Intel YUV Uncompressed
case 'YUY2':
// Uncompressed YUV 4:2:2
$thisfile_video['lossless'] = true;
//$thisfile_video['bits_per_sample'] = 24;
break;
default:
$thisfile_video['lossless'] = false;
//$thisfile_video['bits_per_sample'] = 24;
break;
}
}
}
}
}
break;
case 'AMV ':
$info['fileformat'] = 'amv';
$info['mime_type'] = 'video/amv';
$thisfile_video['bitrate_mode'] = 'vbr';
// it's MJPEG, presumably contant-quality encoding, thereby VBR
$thisfile_video['dataformat'] = 'mjpeg';
$thisfile_video['codec'] = 'mjpeg';
$thisfile_video['lossless'] = false;
$thisfile_video['bits_per_sample'] = 24;
$thisfile_audio['dataformat'] = 'adpcm';
$thisfile_audio['lossless'] = false;
break;
// http://en.wikipedia.org/wiki/CD-DA
// http://en.wikipedia.org/wiki/CD-DA
case 'CDDA':
$info['fileformat'] = 'cda';
unset($info['mime_type']);
$thisfile_audio_dataformat = 'cda';
$info['avdataoffset'] = 44;
if (isset($thisfile_riff['CDDA']['fmt '][0]['data'])) {
// shortcut
$thisfile_riff_CDDA_fmt_0 =& $thisfile_riff['CDDA']['fmt '][0];
$thisfile_riff_CDDA_fmt_0['unknown1'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 0, 2));
$thisfile_riff_CDDA_fmt_0['track_num'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 2, 2));
$thisfile_riff_CDDA_fmt_0['disc_id'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 4, 4));
$thisfile_riff_CDDA_fmt_0['start_offset_frame'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 8, 4));
$thisfile_riff_CDDA_fmt_0['playtime_frames'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 12, 4));
$thisfile_riff_CDDA_fmt_0['unknown6'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 16, 4));
$thisfile_riff_CDDA_fmt_0['unknown7'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 20, 4));
$thisfile_riff_CDDA_fmt_0['start_offset_seconds'] = (double) $thisfile_riff_CDDA_fmt_0['start_offset_frame'] / 75;
$thisfile_riff_CDDA_fmt_0['playtime_seconds'] = (double) $thisfile_riff_CDDA_fmt_0['playtime_frames'] / 75;
$info['comments']['track'] = $thisfile_riff_CDDA_fmt_0['track_num'];
$info['playtime_seconds'] = $thisfile_riff_CDDA_fmt_0['playtime_seconds'];
// hardcoded data for CD-audio
$thisfile_audio['lossless'] = true;
$thisfile_audio['sample_rate'] = 44100;
$thisfile_audio['channels'] = 2;
$thisfile_audio['bits_per_sample'] = 16;
$thisfile_audio['bitrate'] = $thisfile_audio['sample_rate'] * $thisfile_audio['channels'] * $thisfile_audio['bits_per_sample'];
$thisfile_audio['bitrate_mode'] = 'cbr';
}
break;
// http://en.wikipedia.org/wiki/AIFF
// http://en.wikipedia.org/wiki/AIFF
case 'AIFF':
case 'AIFC':
$info['fileformat'] = 'aiff';
$info['mime_type'] = 'audio/x-aiff';
$thisfile_audio['bitrate_mode'] = 'cbr';
$thisfile_audio_dataformat = 'aiff';
$thisfile_audio['lossless'] = true;
if (isset($thisfile_riff[$RIFFsubtype]['SSND'][0]['offset'])) {
$info['avdataoffset'] = $thisfile_riff[$RIFFsubtype]['SSND'][0]['offset'] + 8;
$info['avdataend'] = $info['avdataoffset'] + $thisfile_riff[$RIFFsubtype]['SSND'][0]['size'];
if ($info['avdataend'] > $info['filesize']) {
if ($info['avdataend'] == $info['filesize'] + 1 && $info['filesize'] % 2 == 1) {
// structures rounded to 2-byte boundary, but dumb encoders
// forget to pad end of file to make this actually work
} else {
$info['warning'][] = 'Probable truncated AIFF file: expecting ' . $thisfile_riff[$RIFFsubtype]['SSND'][0]['size'] . ' bytes of audio data, only ' . ($info['filesize'] - $info['avdataoffset']) . ' bytes found';
}
$info['avdataend'] = $info['filesize'];
}
}
if (isset($thisfile_riff[$RIFFsubtype]['COMM'][0]['data'])) {
// shortcut
$thisfile_riff_RIFFsubtype_COMM_0_data =& $thisfile_riff[$RIFFsubtype]['COMM'][0]['data'];
$thisfile_riff_audio['channels'] = Utils::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 0, 2), true);
$thisfile_riff_audio['total_samples'] = Utils::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 2, 4), false);
$thisfile_riff_audio['bits_per_sample'] = Utils::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 6, 2), true);
$thisfile_riff_audio['sample_rate'] = (int) Utils::BigEndian2Float(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 8, 10));
if ($thisfile_riff[$RIFFsubtype]['COMM'][0]['size'] > 18) {
$thisfile_riff_audio['codec_fourcc'] = substr($thisfile_riff_RIFFsubtype_COMM_0_data, 18, 4);
$CodecNameSize = Utils::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 22, 1), false);
$thisfile_riff_audio['codec_name'] = substr($thisfile_riff_RIFFsubtype_COMM_0_data, 23, $CodecNameSize);
switch ($thisfile_riff_audio['codec_name']) {
case 'NONE':
$thisfile_audio['codec'] = 'Pulse Code Modulation (PCM)';
$thisfile_audio['lossless'] = true;
break;
case '':
switch ($thisfile_riff_audio['codec_fourcc']) {
// http://developer.apple.com/qa/snd/snd07.html
case 'sowt':
$thisfile_riff_audio['codec_name'] = 'Two\'s Compliment Little-Endian PCM';
$thisfile_audio['lossless'] = true;
break;
case 'twos':
$thisfile_riff_audio['codec_name'] = 'Two\'s Compliment Big-Endian PCM';
$thisfile_audio['lossless'] = true;
break;
default:
break;
}
break;
default:
$thisfile_audio['codec'] = $thisfile_riff_audio['codec_name'];
$thisfile_audio['lossless'] = false;
break;
}
}
$thisfile_audio['channels'] = $thisfile_riff_audio['channels'];
if ($thisfile_riff_audio['bits_per_sample'] > 0) {
$thisfile_audio['bits_per_sample'] = $thisfile_riff_audio['bits_per_sample'];
}
$thisfile_audio['sample_rate'] = $thisfile_riff_audio['sample_rate'];
if ($thisfile_audio['sample_rate'] == 0) {
$info['error'][] = 'Corrupted AIFF file: sample_rate == zero';
return false;
}
$info['playtime_seconds'] = $thisfile_riff_audio['total_samples'] / $thisfile_audio['sample_rate'];
}
if (isset($thisfile_riff[$RIFFsubtype]['COMT'])) {
$offset = 0;
$CommentCount = Utils::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, 2), false);
$offset += 2;
for ($i = 0; $i < $CommentCount; $i++) {
$info['comments_raw'][$i]['timestamp'] = Utils::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, 4), false);
$offset += 4;
$info['comments_raw'][$i]['marker_id'] = Utils::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, 2), true);
$offset += 2;
$CommentLength = Utils::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, 2), false);
$offset += 2;
$info['comments_raw'][$i]['comment'] = substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, $CommentLength);
$offset += $CommentLength;
$info['comments_raw'][$i]['timestamp_unix'] = Utils::DateMac2Unix($info['comments_raw'][$i]['timestamp']);
$thisfile_riff['comments']['comment'][] = $info['comments_raw'][$i]['comment'];
}
}
$CommentsChunkNames = array('NAME' => 'title', 'author' => 'artist', '(c) ' => 'copyright', 'ANNO' => 'comment');
foreach ($CommentsChunkNames as $key => $value) {
if (isset($thisfile_riff[$RIFFsubtype][$key][0]['data'])) {
$thisfile_riff['comments'][$value][] = $thisfile_riff[$RIFFsubtype][$key][0]['data'];
}
}
/*
if (isset($thisfile_riff[$RIFFsubtype]['ID3 '])) {
$getid3_temp = new GetID3;
$getid3_temp->openfile($this->getid3->filename);
$getid3_id3v2 = new ID3v2($getid3_temp);
$getid3_id3v2->StartingOffset = $thisfile_riff[$RIFFsubtype]['ID3 '][0]['offset'] + 8;
if ($thisfile_riff[$RIFFsubtype]['ID3 '][0]['valid'] = $getid3_id3v2->Analyze()) {
$info['id3v2'] = $getid3_temp->info['id3v2'];
}
unset($getid3_temp, $getid3_id3v2);
}
*/
break;
// http://en.wikipedia.org/wiki/8SVX
// http://en.wikipedia.org/wiki/8SVX
case '8SVX':
$info['fileformat'] = '8svx';
$info['mime_type'] = 'audio/8svx';
$thisfile_audio['bitrate_mode'] = 'cbr';
$thisfile_audio_dataformat = '8svx';
$thisfile_audio['bits_per_sample'] = 8;
$thisfile_audio['channels'] = 1;
// overridden below, if need be
if (isset($thisfile_riff[$RIFFsubtype]['BODY'][0]['offset'])) {
$info['avdataoffset'] = $thisfile_riff[$RIFFsubtype]['BODY'][0]['offset'] + 8;
$info['avdataend'] = $info['avdataoffset'] + $thisfile_riff[$RIFFsubtype]['BODY'][0]['size'];
if ($info['avdataend'] > $info['filesize']) {
$info['warning'][] = 'Probable truncated AIFF file: expecting ' . $thisfile_riff[$RIFFsubtype]['BODY'][0]['size'] . ' bytes of audio data, only ' . ($info['filesize'] - $info['avdataoffset']) . ' bytes found';
}
}
if (isset($thisfile_riff[$RIFFsubtype]['VHDR'][0]['offset'])) {
// shortcut
$thisfile_riff_RIFFsubtype_VHDR_0 =& $thisfile_riff[$RIFFsubtype]['VHDR'][0];
$thisfile_riff_RIFFsubtype_VHDR_0['oneShotHiSamples'] = Utils::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 0, 4));
$thisfile_riff_RIFFsubtype_VHDR_0['repeatHiSamples'] = Utils::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 4, 4));
$thisfile_riff_RIFFsubtype_VHDR_0['samplesPerHiCycle'] = Utils::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 8, 4));
$thisfile_riff_RIFFsubtype_VHDR_0['samplesPerSec'] = Utils::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 12, 2));
$thisfile_riff_RIFFsubtype_VHDR_0['ctOctave'] = Utils::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 14, 1));
$thisfile_riff_RIFFsubtype_VHDR_0['sCompression'] = Utils::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 15, 1));
$thisfile_riff_RIFFsubtype_VHDR_0['Volume'] = Utils::FixedPoint16_16(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 16, 4));
$thisfile_audio['sample_rate'] = $thisfile_riff_RIFFsubtype_VHDR_0['samplesPerSec'];
switch ($thisfile_riff_RIFFsubtype_VHDR_0['sCompression']) {
case 0:
$thisfile_audio['codec'] = 'Pulse Code Modulation (PCM)';
$thisfile_audio['lossless'] = true;
$ActualBitsPerSample = 8;
break;
case 1:
$thisfile_audio['codec'] = 'Fibonacci-delta encoding';
$thisfile_audio['lossless'] = false;
$ActualBitsPerSample = 4;
break;
default:
$info['warning'][] = 'Unexpected sCompression value in 8SVX.VHDR chunk - expecting 0 or 1, found "' . sCompression . '"';
break;
}
}
if (isset($thisfile_riff[$RIFFsubtype]['CHAN'][0]['data'])) {
$ChannelsIndex = Utils::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['CHAN'][0]['data'], 0, 4));
switch ($ChannelsIndex) {
case 6:
// Stereo
$thisfile_audio['channels'] = 2;
break;
case 2:
// Left channel only
// Left channel only
case 4:
// Right channel only
$thisfile_audio['channels'] = 1;
break;
default:
$info['warning'][] = 'Unexpected value in 8SVX.CHAN chunk - expecting 2 or 4 or 6, found "' . $ChannelsIndex . '"';
break;
}
}
$CommentsChunkNames = array('NAME' => 'title', 'author' => 'artist', '(c) ' => 'copyright', 'ANNO' => 'comment');
foreach ($CommentsChunkNames as $key => $value) {
if (isset($thisfile_riff[$RIFFsubtype][$key][0]['data'])) {
$thisfile_riff['comments'][$value][] = $thisfile_riff[$RIFFsubtype][$key][0]['data'];
}
}
$thisfile_audio['bitrate'] = $thisfile_audio['sample_rate'] * $ActualBitsPerSample * $thisfile_audio['channels'];
if (!empty($thisfile_audio['bitrate'])) {
$info['playtime_seconds'] = ($info['avdataend'] - $info['avdataoffset']) / ($thisfile_audio['bitrate'] / 8);
}
break;
case 'CDXA':
$info['fileformat'] = 'vcd';
// Asume Video CD
$info['mime_type'] = 'video/mpeg';
if (!empty($thisfile_riff['CDXA']['data'][0]['size'])) {
$getid3_temp = new GetID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_mpeg = new Mpeg($getid3_temp);
$getid3_mpeg->Analyze();
if (empty($getid3_temp->info['error'])) {
$info['audio'] = $getid3_temp->info['audio'];
$info['video'] = $getid3_temp->info['video'];
$info['mpeg'] = $getid3_temp->info['mpeg'];
$info['warning'] = $getid3_temp->info['warning'];
}
unset($getid3_temp, $getid3_mpeg);
}
break;
default:
$info['error'][] = 'Unknown RIFF type: expecting one of (WAVE|RMP3|AVI |CDDA|AIFF|AIFC|8SVX|CDXA), found "' . $RIFFsubtype . '" instead';
//unset($info['fileformat']);
}
switch ($RIFFsubtype) {
case 'WAVE':
case 'AIFF':
case 'AIFC':
$ID3v2_key_good = 'id3 ';
$ID3v2_keys_bad = array('ID3 ', 'tag ');
foreach ($ID3v2_keys_bad as $ID3v2_key_bad) {
if (isset($thisfile_riff[$RIFFsubtype][$ID3v2_key_bad]) && !array_key_exists($ID3v2_key_good, $thisfile_riff[$RIFFsubtype])) {
$thisfile_riff[$RIFFsubtype][$ID3v2_key_good] = $thisfile_riff[$RIFFsubtype][$ID3v2_key_bad];
$info['warning'][] = 'mapping "' . $ID3v2_key_bad . '" chunk to "' . $ID3v2_key_good . '"';
}
}
if (isset($thisfile_riff[$RIFFsubtype]['id3 '])) {
$getid3_temp = new GetID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_id3v2 = new ID3v2($getid3_temp);
$getid3_id3v2->StartingOffset = $thisfile_riff[$RIFFsubtype]['id3 '][0]['offset'] + 8;
if ($thisfile_riff[$RIFFsubtype]['id3 '][0]['valid'] = $getid3_id3v2->Analyze()) {
$info['id3v2'] = $getid3_temp->info['id3v2'];
}
unset($getid3_temp, $getid3_id3v2);
}
break;
}
if (isset($thisfile_riff_WAVE['DISP']) && is_array($thisfile_riff_WAVE['DISP'])) {
$thisfile_riff['comments']['title'][] = trim(substr($thisfile_riff_WAVE['DISP'][count($thisfile_riff_WAVE['DISP']) - 1]['data'], 4));
}
if (isset($thisfile_riff_WAVE['INFO']) && is_array($thisfile_riff_WAVE['INFO'])) {
self::parseComments($thisfile_riff_WAVE['INFO'], $thisfile_riff['comments']);
}
if (isset($thisfile_riff['AVI ']['INFO']) && is_array($thisfile_riff['AVI ']['INFO'])) {
self::parseComments($thisfile_riff['AVI ']['INFO'], $thisfile_riff['comments']);
}
if (empty($thisfile_audio['encoder']) && !empty($info['mpeg']['audio']['LAME']['short_version'])) {
$thisfile_audio['encoder'] = $info['mpeg']['audio']['LAME']['short_version'];
}
if (!isset($info['playtime_seconds'])) {
$info['playtime_seconds'] = 0;
}
if (isset($thisfile_riff_raw['strh'][0]['dwLength']) && isset($thisfile_riff_raw['avih']['dwMicroSecPerFrame'])) {
// needed for >2GB AVIs where 'avih' chunk only lists number of frames in that chunk, not entire movie
$info['playtime_seconds'] = $thisfile_riff_raw['strh'][0]['dwLength'] * ($thisfile_riff_raw['avih']['dwMicroSecPerFrame'] / 1000000);
} elseif (isset($thisfile_riff_raw['avih']['dwTotalFrames']) && isset($thisfile_riff_raw['avih']['dwMicroSecPerFrame'])) {
$info['playtime_seconds'] = $thisfile_riff_raw['avih']['dwTotalFrames'] * ($thisfile_riff_raw['avih']['dwMicroSecPerFrame'] / 1000000);
}
if ($info['playtime_seconds'] > 0) {
if (isset($thisfile_riff_audio) && isset($thisfile_riff_video)) {
if (!isset($info['bitrate'])) {
$info['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
}
} elseif (isset($thisfile_riff_audio) && !isset($thisfile_riff_video)) {
if (!isset($thisfile_audio['bitrate'])) {
$thisfile_audio['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
}
} elseif (!isset($thisfile_riff_audio) && isset($thisfile_riff_video)) {
if (!isset($thisfile_video['bitrate'])) {
$thisfile_video['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
}
}
}
if (isset($thisfile_riff_video) && isset($thisfile_audio['bitrate']) && $thisfile_audio['bitrate'] > 0 && $info['playtime_seconds'] > 0) {
$info['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
$thisfile_audio['bitrate'] = 0;
$thisfile_video['bitrate'] = $info['bitrate'];
foreach ($thisfile_riff_audio as $channelnumber => $audioinfoarray) {
$thisfile_video['bitrate'] -= $audioinfoarray['bitrate'];
$thisfile_audio['bitrate'] += $audioinfoarray['bitrate'];
}
if ($thisfile_video['bitrate'] <= 0) {
unset($thisfile_video['bitrate']);
}
if ($thisfile_audio['bitrate'] <= 0) {
unset($thisfile_audio['bitrate']);
}
}
if (isset($info['mpeg']['audio'])) {
$thisfile_audio_dataformat = 'mp' . $info['mpeg']['audio']['layer'];
$thisfile_audio['sample_rate'] = $info['mpeg']['audio']['sample_rate'];
$thisfile_audio['channels'] = $info['mpeg']['audio']['channels'];
$thisfile_audio['bitrate'] = $info['mpeg']['audio']['bitrate'];
$thisfile_audio['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']);
if (!empty($info['mpeg']['audio']['codec'])) {
$thisfile_audio['codec'] = $info['mpeg']['audio']['codec'] . ' ' . $thisfile_audio['codec'];
}
if (!empty($thisfile_audio['streams'])) {
foreach ($thisfile_audio['streams'] as $streamnumber => $streamdata) {
if ($streamdata['dataformat'] == $thisfile_audio_dataformat) {
$thisfile_audio['streams'][$streamnumber]['sample_rate'] = $thisfile_audio['sample_rate'];
$thisfile_audio['streams'][$streamnumber]['channels'] = $thisfile_audio['channels'];
$thisfile_audio['streams'][$streamnumber]['bitrate'] = $thisfile_audio['bitrate'];
$thisfile_audio['streams'][$streamnumber]['bitrate_mode'] = $thisfile_audio['bitrate_mode'];
$thisfile_audio['streams'][$streamnumber]['codec'] = $thisfile_audio['codec'];
}
}
}
$getid3_mp3 = new Mp3($this->getid3);
$thisfile_audio['encoder_options'] = $getid3_mp3->GuessEncoderOptions();
unset($getid3_mp3);
}
if (!empty($thisfile_riff_raw['fmt ']['wBitsPerSample']) && $thisfile_riff_raw['fmt ']['wBitsPerSample'] > 0) {
switch ($thisfile_audio_dataformat) {
case 'ac3':
// ignore bits_per_sample
break;
default:
$thisfile_audio['bits_per_sample'] = $thisfile_riff_raw['fmt ']['wBitsPerSample'];
break;
}
}
if (empty($thisfile_riff_raw)) {
unset($thisfile_riff['raw']);
}
if (empty($thisfile_riff_audio)) {
unset($thisfile_riff['audio']);
}
if (empty($thisfile_riff_video)) {
unset($thisfile_riff['video']);
}
return true;
}
public function ParseOptimFROGheader45()
{
// for fileformat of v4.50a and higher
$info =& $this->getid3->info;
$RIFFdata = '';
$this->fseek($info['avdataoffset']);
while (!feof($this->getid3->fp) && $this->ftell() < $info['avdataend']) {
$BlockOffset = $this->ftell();
$BlockData = $this->fread(8);
$offset = 8;
$BlockName = substr($BlockData, 0, 4);
$BlockSize = Utils::LittleEndian2Int(substr($BlockData, 4, 4));
if ($BlockName == 'OFRX') {
$BlockName = 'OFR ';
}
if (!isset($info['ofr'][$BlockName])) {
$info['ofr'][$BlockName] = array();
}
$thisfile_ofr_thisblock =& $info['ofr'][$BlockName];
switch ($BlockName) {
case 'OFR ':
// shortcut
$thisfile_ofr_thisblock['offset'] = $BlockOffset;
$thisfile_ofr_thisblock['size'] = $BlockSize;
$info['audio']['encoder'] = 'OptimFROG 4.50 alpha';
switch ($BlockSize) {
case 12:
case 15:
// good
break;
default:
$info['warning'][] = '"' . $BlockName . '" contains more data than expected (expected 12 or 15 bytes, found ' . $BlockSize . ' bytes)';
break;
}
$BlockData .= $this->fread($BlockSize);
$thisfile_ofr_thisblock['total_samples'] = Utils::LittleEndian2Int(substr($BlockData, $offset, 6));
$offset += 6;
$thisfile_ofr_thisblock['raw']['sample_type'] = Utils::LittleEndian2Int(substr($BlockData, $offset, 1));
$thisfile_ofr_thisblock['sample_type'] = $this->OptimFROGsampleTypeLookup($thisfile_ofr_thisblock['raw']['sample_type']);
$offset += 1;
$thisfile_ofr_thisblock['channel_config'] = Utils::LittleEndian2Int(substr($BlockData, $offset, 1));
$thisfile_ofr_thisblock['channels'] = $thisfile_ofr_thisblock['channel_config'];
$offset += 1;
$thisfile_ofr_thisblock['sample_rate'] = Utils::LittleEndian2Int(substr($BlockData, $offset, 4));
$offset += 4;
if ($BlockSize > 12) {
// OFR 4.504b or higher
$thisfile_ofr_thisblock['channels'] = $this->OptimFROGchannelConfigNumChannelsLookup($thisfile_ofr_thisblock['channel_config']);
$thisfile_ofr_thisblock['raw']['encoder_id'] = Utils::LittleEndian2Int(substr($BlockData, $offset, 2));
$thisfile_ofr_thisblock['encoder'] = $this->OptimFROGencoderNameLookup($thisfile_ofr_thisblock['raw']['encoder_id']);
$offset += 2;
$thisfile_ofr_thisblock['raw']['compression'] = Utils::LittleEndian2Int(substr($BlockData, $offset, 1));
$thisfile_ofr_thisblock['compression'] = $this->OptimFROGcompressionLookup($thisfile_ofr_thisblock['raw']['compression']);
$thisfile_ofr_thisblock['speedup'] = $this->OptimFROGspeedupLookup($thisfile_ofr_thisblock['raw']['compression']);
$offset += 1;
$info['audio']['encoder'] = 'OptimFROG ' . $thisfile_ofr_thisblock['encoder'];
$info['audio']['encoder_options'] = '--mode ' . $thisfile_ofr_thisblock['compression'];
if (($thisfile_ofr_thisblock['raw']['encoder_id'] & 0xf0) >> 4 == 7) {
// v4.507
if (strtolower(Utils::fileextension($info['filename'])) == 'ofs') {
// 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.
$info['audio']['dataformat'] = 'ofs';
$info['audio']['lossless'] = true;
}
}
}
$info['audio']['channels'] = $thisfile_ofr_thisblock['channels'];
$info['audio']['sample_rate'] = $thisfile_ofr_thisblock['sample_rate'];
$info['audio']['bits_per_sample'] = $this->OptimFROGbitsPerSampleTypeLookup($thisfile_ofr_thisblock['raw']['sample_type']);
break;
case 'COMP':
// unlike other block types, there CAN be multiple COMP blocks
$COMPdata['offset'] = $BlockOffset;
$COMPdata['size'] = $BlockSize;
if ($info['avdataoffset'] == 0) {
$info['avdataoffset'] = $BlockOffset;
}
// Only interested in first 14 bytes (only first 12 needed for v4.50 alpha), not actual audio data
$BlockData .= $this->fread(14);
$this->fseek($BlockSize - 14, SEEK_CUR);
$COMPdata['crc_32'] = Utils::LittleEndian2Int(substr($BlockData, $offset, 4));
$offset += 4;
$COMPdata['sample_count'] = Utils::LittleEndian2Int(substr($BlockData, $offset, 4));
$offset += 4;
$COMPdata['raw']['sample_type'] = Utils::LittleEndian2Int(substr($BlockData, $offset, 1));
$COMPdata['sample_type'] = $this->OptimFROGsampleTypeLookup($COMPdata['raw']['sample_type']);
$offset += 1;
$COMPdata['raw']['channel_configuration'] = Utils::LittleEndian2Int(substr($BlockData, $offset, 1));
$COMPdata['channel_configuration'] = $this->OptimFROGchannelConfigurationLookup($COMPdata['raw']['channel_configuration']);
$offset += 1;
$COMPdata['raw']['algorithm_id'] = Utils::LittleEndian2Int(substr($BlockData, $offset, 2));
//$COMPdata['algorithm'] = OptimFROGalgorithmNameLookup($COMPdata['raw']['algorithm_id']);
$offset += 2;
if ($info['ofr']['OFR ']['size'] > 12) {
// OFR 4.504b or higher
$COMPdata['raw']['encoder_id'] = Utils::LittleEndian2Int(substr($BlockData, $offset, 2));
$COMPdata['encoder'] = $this->OptimFROGencoderNameLookup($COMPdata['raw']['encoder_id']);
$offset += 2;
}
if ($COMPdata['crc_32'] == 0x454e4f4e) {
// ASCII value of 'NONE' - placeholder value in v4.50a
$COMPdata['crc_32'] = false;
}
$thisfile_ofr_thisblock[] = $COMPdata;
break;
case 'HEAD':
$thisfile_ofr_thisblock['offset'] = $BlockOffset;
$thisfile_ofr_thisblock['size'] = $BlockSize;
$RIFFdata .= $this->fread($BlockSize);
break;
case 'TAIL':
$thisfile_ofr_thisblock['offset'] = $BlockOffset;
$thisfile_ofr_thisblock['size'] = $BlockSize;
if ($BlockSize > 0) {
$RIFFdata .= $this->fread($BlockSize);
}
break;
case 'RECV':
// block contains no useful meta data - simply note and skip
$thisfile_ofr_thisblock['offset'] = $BlockOffset;
$thisfile_ofr_thisblock['size'] = $BlockSize;
$this->fseek($BlockSize, SEEK_CUR);
break;
case 'APET':
// APEtag v2
$thisfile_ofr_thisblock['offset'] = $BlockOffset;
$thisfile_ofr_thisblock['size'] = $BlockSize;
$info['warning'][] = 'APEtag processing inside OptimFROG not supported in this version (' . $this->getid3->version() . ') of getID3()';
$this->fseek($BlockSize, SEEK_CUR);
break;
case 'MD5 ':
// APEtag v2
$thisfile_ofr_thisblock['offset'] = $BlockOffset;
$thisfile_ofr_thisblock['size'] = $BlockSize;
if ($BlockSize == 16) {
$thisfile_ofr_thisblock['md5_binary'] = $this->fread($BlockSize);
$thisfile_ofr_thisblock['md5_string'] = Utils::PrintHexBytes($thisfile_ofr_thisblock['md5_binary'], true, false, false);
$info['md5_data_source'] = $thisfile_ofr_thisblock['md5_string'];
} else {
$info['warning'][] = 'Expecting block size of 16 in "MD5 " chunk, found ' . $BlockSize . ' instead';
$this->fseek($BlockSize, SEEK_CUR);
}
break;
default:
$thisfile_ofr_thisblock['offset'] = $BlockOffset;
$thisfile_ofr_thisblock['size'] = $BlockSize;
$info['warning'][] = 'Unhandled OptimFROG block type "' . $BlockName . '" at offset ' . $thisfile_ofr_thisblock['offset'];
$this->fseek($BlockSize, SEEK_CUR);
break;
}
}
if (isset($info['ofr']['TAIL']['offset'])) {
$info['avdataend'] = $info['ofr']['TAIL']['offset'];
}
$info['playtime_seconds'] = (double) $info['ofr']['OFR ']['total_samples'] / ($info['audio']['channels'] * $info['audio']['sample_rate']);
$info['audio']['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $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
$RIFFdata = substr($RIFFdata, 0, 36) . substr($RIFFdata, 44) . substr($RIFFdata, 36, 8);
$getid3_temp = new GetID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $info['avdataoffset'];
$getid3_temp->info['avdataend'] = $info['avdataend'];
$getid3_riff = new Riff($getid3_temp);
$getid3_riff->ParseRIFFdata($RIFFdata);
$info['riff'] = $getid3_temp->info['riff'];
unset($getid3_riff, $getid3_temp, $RIFFdata);
return true;
}