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