/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
$info['fileformat'] = 'rar';
if ($this->option_use_rar_extension === true) {
if (function_exists('rar_open')) {
if ($rp = rar_open($info['filenamepath'])) {
$info['rar']['files'] = array();
$entries = rar_list($rp);
foreach ($entries as $entry) {
$info['rar']['files'] = GetId3_Lib_Helper::array_merge_clobber($info['rar']['files'], GetId3_Lib_Helper::CreateDeepArray($entry->getName(), '/', $entry->getUnpackedSize()));
}
rar_close($rp);
return true;
} else {
$info['error'][] = 'failed to rar_open(' . $info['filename'] . ')';
}
} else {
$info['error'][] = 'RAR support does not appear to be available in this PHP installation';
}
} else {
$info['error'][] = 'PHP-RAR processing has been disabled (set $getid3_rar->option_use_rar_extension=true to enable)';
}
return false;
}
/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$DSSheader = fread($this->getid3->fp, 1256);
if (!preg_match('#^(\\x02|\\x03)dss#', $DSSheader)) {
$info['error'][] = 'Expecting "[02-03] 64 73 73" at offset ' . $info['avdataoffset'] . ', found "' . GetId3_Lib_Helper::PrintHexBytes(substr($DSSheader, 0, 4)) . '"';
return false;
}
// some structure information taken from http://cpansearch.perl.org/src/RGIBSON/Audio-DSS-0.02/lib/Audio/DSS.pm
// shortcut
$info['dss'] = array();
$thisfile_dss =& $info['dss'];
$info['fileformat'] = 'dss';
$info['audio']['dataformat'] = 'dss';
$info['audio']['bitrate_mode'] = 'cbr';
//$thisfile_dss['encoding'] = 'ISO-8859-1';
$thisfile_dss['version'] = ord(substr($DSSheader, 0, 1));
$thisfile_dss['date_create'] = self::DSSdateStringToUnixDate(substr($DSSheader, 38, 12));
$thisfile_dss['date_complete'] = self::DSSdateStringToUnixDate(substr($DSSheader, 50, 12));
//$thisfile_dss['length'] = intval(substr($DSSheader, 62, 6)); // I thought time was in seconds, it's actually HHMMSS
$thisfile_dss['length'] = intval(substr($DSSheader, 62, 2) * 3600 + substr($DSSheader, 64, 2) * 60 + substr($DSSheader, 66, 2));
$thisfile_dss['priority'] = ord(substr($DSSheader, 793, 1));
$thisfile_dss['comments'] = trim(substr($DSSheader, 798, 100));
//$info['audio']['bits_per_sample'] = ?;
//$info['audio']['sample_rate'] = ?;
$info['audio']['channels'] = 1;
$info['playtime_seconds'] = $thisfile_dss['length'];
$info['audio']['bitrate'] = $info['filesize'] * 8 / $info['playtime_seconds'];
return true;
}
/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$EXEheader = fread($this->getid3->fp, 28);
$magic = 'MZ';
if (substr($EXEheader, 0, 2) != $magic) {
$info['error'][] = 'Expecting "' . GetId3_Lib_Helper::PrintHexBytes($magic) . '" at offset ' . $info['avdataoffset'] . ', found "' . GetId3_Lib_Helper::PrintHexBytes(substr($EXEheader, 0, 2)) . '"';
return false;
}
$info['fileformat'] = 'exe';
$info['exe']['mz']['magic'] = 'MZ';
$info['exe']['mz']['raw']['last_page_size'] = GetId3_Lib_Helper::LittleEndian2Int(substr($EXEheader, 2, 2));
$info['exe']['mz']['raw']['page_count'] = GetId3_Lib_Helper::LittleEndian2Int(substr($EXEheader, 4, 2));
$info['exe']['mz']['raw']['relocation_count'] = GetId3_Lib_Helper::LittleEndian2Int(substr($EXEheader, 6, 2));
$info['exe']['mz']['raw']['header_paragraphs'] = GetId3_Lib_Helper::LittleEndian2Int(substr($EXEheader, 8, 2));
$info['exe']['mz']['raw']['min_memory_paragraphs'] = GetId3_Lib_Helper::LittleEndian2Int(substr($EXEheader, 10, 2));
$info['exe']['mz']['raw']['max_memory_paragraphs'] = GetId3_Lib_Helper::LittleEndian2Int(substr($EXEheader, 12, 2));
$info['exe']['mz']['raw']['initial_ss'] = GetId3_Lib_Helper::LittleEndian2Int(substr($EXEheader, 14, 2));
$info['exe']['mz']['raw']['initial_sp'] = GetId3_Lib_Helper::LittleEndian2Int(substr($EXEheader, 16, 2));
$info['exe']['mz']['raw']['checksum'] = GetId3_Lib_Helper::LittleEndian2Int(substr($EXEheader, 18, 2));
$info['exe']['mz']['raw']['cs_ip'] = GetId3_Lib_Helper::LittleEndian2Int(substr($EXEheader, 20, 4));
$info['exe']['mz']['raw']['relocation_table_offset'] = GetId3_Lib_Helper::LittleEndian2Int(substr($EXEheader, 24, 2));
$info['exe']['mz']['raw']['overlay_number'] = GetId3_Lib_Helper::LittleEndian2Int(substr($EXEheader, 26, 2));
$info['exe']['mz']['byte_size'] = ($info['exe']['mz']['raw']['page_count'] - 1) * 512 + $info['exe']['mz']['raw']['last_page_size'];
$info['exe']['mz']['header_size'] = $info['exe']['mz']['raw']['header_paragraphs'] * 16;
$info['exe']['mz']['memory_minimum'] = $info['exe']['mz']['raw']['min_memory_paragraphs'] * 16;
$info['exe']['mz']['memory_recommended'] = $info['exe']['mz']['raw']['max_memory_paragraphs'] * 16;
$info['error'][] = 'EXE parsing not enabled in this version of GetId3() [' . $this->getid3->version() . ']';
return false;
}
/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$SZIPHeader = fread($this->getid3->fp, 6);
if (substr($SZIPHeader, 0, 4) != "SZ\n") {
$info['error'][] = 'Expecting "53 5A 0A 04" at offset ' . $info['avdataoffset'] . ', found "' . GetId3_Lib_Helper::PrintHexBytes(substr($SZIPHeader, 0, 4)) . '"';
return false;
}
$info['fileformat'] = 'szip';
$info['szip']['major_version'] = GetId3_Lib_Helper::BigEndian2Int(substr($SZIPHeader, 4, 1));
$info['szip']['minor_version'] = GetId3_Lib_Helper::BigEndian2Int(substr($SZIPHeader, 5, 1));
while (!feof($this->getid3->fp)) {
$NextBlockID = fread($this->getid3->fp, 2);
switch ($NextBlockID) {
case 'SZ':
// Note that szip files can be concatenated, this has the same effect as
// concatenating the files. this also means that global header blocks
// might be present between directory/data blocks.
fseek($this->getid3->fp, 4, SEEK_CUR);
break;
case 'BH':
$BHheaderbytes = GetId3_Lib_Helper::BigEndian2Int(fread($this->getid3->fp, 3));
$BHheaderdata = fread($this->getid3->fp, $BHheaderbytes);
$BHheaderoffset = 0;
while (strpos($BHheaderdata, "", $BHheaderoffset) > 0) {
//filename as \0 terminated string (empty string indicates end)
//owner as \0 terminated string (empty is same as last file)
//group as \0 terminated string (empty is same as last file)
//3 byte filelength in this block
//2 byte access flags
//4 byte creation time (like in unix)
//4 byte modification time (like in unix)
//4 byte access time (like in unix)
$BHdataArray['filename'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, ""));
$BHheaderoffset += strlen($BHdataArray['filename']) + 1;
$BHdataArray['owner'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, ""));
$BHheaderoffset += strlen($BHdataArray['owner']) + 1;
$BHdataArray['group'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, ""));
$BHheaderoffset += strlen($BHdataArray['group']) + 1;
$BHdataArray['filelength'] = GetId3_Lib_Helper::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 3));
$BHheaderoffset += 3;
$BHdataArray['access_flags'] = GetId3_Lib_Helper::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 2));
$BHheaderoffset += 2;
$BHdataArray['creation_time'] = GetId3_Lib_Helper::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4));
$BHheaderoffset += 4;
$BHdataArray['modification_time'] = GetId3_Lib_Helper::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4));
$BHheaderoffset += 4;
$BHdataArray['access_time'] = GetId3_Lib_Helper::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4));
$BHheaderoffset += 4;
$info['szip']['BH'][] = $BHdataArray;
}
break;
default:
break 2;
}
}
return true;
}
/**
*
* @return boolean
*/
public function ParseBink()
{
$info =& $this->getid3->info;
$info['fileformat'] = 'bink';
$info['video']['dataformat'] = 'bink';
$fileData = 'BIK' . fread($this->getid3->fp, 13);
$info['bink']['data_size'] = GetId3_Lib_Helper::LittleEndian2Int(substr($fileData, 4, 4));
$info['bink']['frame_count'] = GetId3_Lib_Helper::LittleEndian2Int(substr($fileData, 8, 2));
if ($info['avdataend'] - $info['avdataoffset'] != $info['bink']['data_size'] + 8) {
$info['error'][] = 'Probably truncated file: expecting ' . $info['bink']['data_size'] . ' bytes, found ' . ($info['avdataend'] - $info['avdataoffset']);
}
return true;
}
/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$RKAUHeader = fread($this->getid3->fp, 20);
$magic = 'RKA';
if (substr($RKAUHeader, 0, 3) != $magic) {
$info['error'][] = 'Expecting "' . GetId3_Lib_Helper::PrintHexBytes($magic) . '" at offset ' . $info['avdataoffset'] . ', found "' . GetId3_Lib_Helper::PrintHexBytes(substr($RKAUHeader, 0, 3)) . '"';
return false;
}
$info['fileformat'] = 'rkau';
$info['audio']['dataformat'] = 'rkau';
$info['audio']['bitrate_mode'] = 'vbr';
$info['rkau']['raw']['version'] = GetId3_Lib_Helper::LittleEndian2Int(substr($RKAUHeader, 3, 1));
$info['rkau']['version'] = '1.' . str_pad($info['rkau']['raw']['version'] & 0xf, 2, '0', STR_PAD_LEFT);
if ($info['rkau']['version'] > 1.07 || $info['rkau']['version'] < 1.06) {
$info['error'][] = 'This version of GetId3() [' . $this->getid3->version() . '] can only parse RKAU files v1.06 and 1.07 (this file is v' . $info['rkau']['version'] . ')';
unset($info['rkau']);
return false;
}
$info['rkau']['source_bytes'] = GetId3_Lib_Helper::LittleEndian2Int(substr($RKAUHeader, 4, 4));
$info['rkau']['sample_rate'] = GetId3_Lib_Helper::LittleEndian2Int(substr($RKAUHeader, 8, 4));
$info['rkau']['channels'] = GetId3_Lib_Helper::LittleEndian2Int(substr($RKAUHeader, 12, 1));
$info['rkau']['bits_per_sample'] = GetId3_Lib_Helper::LittleEndian2Int(substr($RKAUHeader, 13, 1));
$info['rkau']['raw']['quality'] = GetId3_Lib_Helper::LittleEndian2Int(substr($RKAUHeader, 14, 1));
$this->RKAUqualityLookup($info['rkau']);
$info['rkau']['raw']['flags'] = GetId3_Lib_Helper::LittleEndian2Int(substr($RKAUHeader, 15, 1));
$info['rkau']['flags']['joint_stereo'] = (bool) (!($info['rkau']['raw']['flags'] & 0x1));
$info['rkau']['flags']['streaming'] = (bool) ($info['rkau']['raw']['flags'] & 0x2);
$info['rkau']['flags']['vrq_lossy_mode'] = (bool) ($info['rkau']['raw']['flags'] & 0x4);
if ($info['rkau']['flags']['streaming']) {
$info['avdataoffset'] += 20;
$info['rkau']['compressed_bytes'] = GetId3_Lib_Helper::LittleEndian2Int(substr($RKAUHeader, 16, 4));
} else {
$info['avdataoffset'] += 16;
$info['rkau']['compressed_bytes'] = $info['avdataend'] - $info['avdataoffset'] - 1;
}
// Note: compressed_bytes does not always equal what appears to be the actual number of compressed bytes,
// sometimes it's more, sometimes less. No idea why(?)
$info['audio']['lossless'] = $info['rkau']['lossless'];
$info['audio']['channels'] = $info['rkau']['channels'];
$info['audio']['bits_per_sample'] = $info['rkau']['bits_per_sample'];
$info['audio']['sample_rate'] = $info['rkau']['sample_rate'];
$info['playtime_seconds'] = $info['rkau']['source_bytes'] / ($info['rkau']['sample_rate'] * $info['rkau']['channels'] * ($info['rkau']['bits_per_sample'] / 8));
$info['audio']['bitrate'] = $info['rkau']['compressed_bytes'] * 8 / $info['playtime_seconds'];
return true;
}
/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$AUheader = fread($this->getid3->fp, 8);
$magic = '.snd';
if (substr($AUheader, 0, 4) != $magic) {
$info['error'][] = 'Expecting "' . GetId3_Lib_Helper::PrintHexBytes($magic) . '" (".snd") at offset ' . $info['avdataoffset'] . ', found "' . GetId3_Lib_Helper::PrintHexBytes(substr($AUheader, 0, 4)) . '"';
return false;
}
// shortcut
$info['au'] = array();
$thisfile_au =& $info['au'];
$info['fileformat'] = 'au';
$info['audio']['dataformat'] = 'au';
$info['audio']['bitrate_mode'] = 'cbr';
$thisfile_au['encoding'] = 'ISO-8859-1';
$thisfile_au['header_length'] = GetId3_Lib_Helper::BigEndian2Int(substr($AUheader, 4, 4));
$AUheader .= fread($this->getid3->fp, $thisfile_au['header_length'] - 8);
$info['avdataoffset'] += $thisfile_au['header_length'];
$thisfile_au['data_size'] = GetId3_Lib_Helper::BigEndian2Int(substr($AUheader, 8, 4));
$thisfile_au['data_format_id'] = GetId3_Lib_Helper::BigEndian2Int(substr($AUheader, 12, 4));
$thisfile_au['sample_rate'] = GetId3_Lib_Helper::BigEndian2Int(substr($AUheader, 16, 4));
$thisfile_au['channels'] = GetId3_Lib_Helper::BigEndian2Int(substr($AUheader, 20, 4));
$thisfile_au['comments']['comment'][] = trim(substr($AUheader, 24));
$thisfile_au['data_format'] = $this->AUdataFormatNameLookup($thisfile_au['data_format_id']);
$thisfile_au['used_bits_per_sample'] = $this->AUdataFormatUsedBitsPerSampleLookup($thisfile_au['data_format_id']);
if ($thisfile_au['bits_per_sample'] = $this->AUdataFormatBitsPerSampleLookup($thisfile_au['data_format_id'])) {
$info['audio']['bits_per_sample'] = $thisfile_au['bits_per_sample'];
} else {
unset($thisfile_au['bits_per_sample']);
}
$info['audio']['sample_rate'] = $thisfile_au['sample_rate'];
$info['audio']['channels'] = $thisfile_au['channels'];
if ($info['avdataoffset'] + $thisfile_au['data_size'] > $info['avdataend']) {
$info['warning'][] = 'Possible truncated file - expecting "' . $thisfile_au['data_size'] . '" bytes of audio data, only found ' . ($info['avdataend'] - $info['avdataoffset']) . ' bytes"';
}
$info['playtime_seconds'] = $thisfile_au['data_size'] / ($thisfile_au['sample_rate'] * $thisfile_au['channels'] * ($thisfile_au['used_bits_per_sample'] / 8));
$info['audio']['bitrate'] = $thisfile_au['data_size'] * 8 / $info['playtime_seconds'];
return true;
}
/**
*
* @staticvar type $shorten_present
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$ShortenHeader = fread($this->getid3->fp, 8);
$magic = 'ajkg';
if (substr($ShortenHeader, 0, 4) != $magic) {
$info['error'][] = 'Expecting "' . GetId3_Lib_Helper::PrintHexBytes($magic) . '" at offset ' . $info['avdataoffset'] . ', found "' . GetId3_Lib_Helper::PrintHexBytes(substr($ShortenHeader, 0, 4)) . '"';
return false;
}
$info['fileformat'] = 'shn';
$info['audio']['dataformat'] = 'shn';
$info['audio']['lossless'] = true;
$info['audio']['bitrate_mode'] = 'vbr';
$info['shn']['version'] = GetId3_Lib_Helper::LittleEndian2Int(substr($ShortenHeader, 4, 1));
fseek($this->getid3->fp, $info['avdataend'] - 12, SEEK_SET);
$SeekTableSignatureTest = fread($this->getid3->fp, 12);
$info['shn']['seektable']['present'] = (bool) (substr($SeekTableSignatureTest, 4, 8) == 'SHNAMPSK');
if ($info['shn']['seektable']['present']) {
$info['shn']['seektable']['length'] = GetId3_Lib_Helper::LittleEndian2Int(substr($SeekTableSignatureTest, 0, 4));
$info['shn']['seektable']['offset'] = $info['avdataend'] - $info['shn']['seektable']['length'];
fseek($this->getid3->fp, $info['shn']['seektable']['offset'], SEEK_SET);
$SeekTableMagic = fread($this->getid3->fp, 4);
$magic = 'SEEK';
if ($SeekTableMagic != $magic) {
$info['error'][] = 'Expecting "' . GetId3_Lib_Helper::PrintHexBytes($magic) . '" at offset ' . $info['shn']['seektable']['offset'] . ', found "' . GetId3_Lib_Helper::PrintHexBytes($SeekTableMagic) . '"';
return false;
} else {
// typedef struct tag_TSeekEntry
// {
// unsigned long SampleNumber;
// unsigned long SHNFileByteOffset;
// unsigned long SHNLastBufferReadPosition;
// unsigned short SHNByteGet;
// unsigned short SHNBufferOffset;
// unsigned short SHNFileBitOffset;
// unsigned long SHNGBuffer;
// unsigned short SHNBitShift;
// long CBuf0[3];
// long CBuf1[3];
// long Offset0[4];
// long Offset1[4];
// }TSeekEntry;
$SeekTableData = fread($this->getid3->fp, $info['shn']['seektable']['length'] - 16);
$info['shn']['seektable']['entry_count'] = floor(strlen($SeekTableData) / 80);
//$info['shn']['seektable']['entries'] = array();
//$SeekTableOffset = 0;
//for ($i = 0; $i < $info['shn']['seektable']['entry_count']; $i++) {
// $SeekTableEntry['sample_number'] = GetId3_lib::LittleEndian2Int(substr($SeekTableData, $SeekTableOffset, 4));
// $SeekTableOffset += 4;
// $SeekTableEntry['shn_file_byte_offset'] = GetId3_lib::LittleEndian2Int(substr($SeekTableData, $SeekTableOffset, 4));
// $SeekTableOffset += 4;
// $SeekTableEntry['shn_last_buffer_read_position'] = GetId3_lib::LittleEndian2Int(substr($SeekTableData, $SeekTableOffset, 4));
// $SeekTableOffset += 4;
// $SeekTableEntry['shn_byte_get'] = GetId3_lib::LittleEndian2Int(substr($SeekTableData, $SeekTableOffset, 2));
// $SeekTableOffset += 2;
// $SeekTableEntry['shn_buffer_offset'] = GetId3_lib::LittleEndian2Int(substr($SeekTableData, $SeekTableOffset, 2));
// $SeekTableOffset += 2;
// $SeekTableEntry['shn_file_bit_offset'] = GetId3_lib::LittleEndian2Int(substr($SeekTableData, $SeekTableOffset, 2));
// $SeekTableOffset += 2;
// $SeekTableEntry['shn_gbuffer'] = GetId3_lib::LittleEndian2Int(substr($SeekTableData, $SeekTableOffset, 4));
// $SeekTableOffset += 4;
// $SeekTableEntry['shn_bit_shift'] = GetId3_lib::LittleEndian2Int(substr($SeekTableData, $SeekTableOffset, 2));
// $SeekTableOffset += 2;
// for ($j = 0; $j < 3; $j++) {
// $SeekTableEntry['cbuf0'][$j] = GetId3_lib::LittleEndian2Int(substr($SeekTableData, $SeekTableOffset, 4));
// $SeekTableOffset += 4;
// }
// for ($j = 0; $j < 3; $j++) {
// $SeekTableEntry['cbuf1'][$j] = GetId3_lib::LittleEndian2Int(substr($SeekTableData, $SeekTableOffset, 4));
// $SeekTableOffset += 4;
// }
// for ($j = 0; $j < 4; $j++) {
// $SeekTableEntry['offset0'][$j] = GetId3_lib::LittleEndian2Int(substr($SeekTableData, $SeekTableOffset, 4));
// $SeekTableOffset += 4;
// }
// for ($j = 0; $j < 4; $j++) {
// $SeekTableEntry['offset1'][$j] = GetId3_lib::LittleEndian2Int(substr($SeekTableData, $SeekTableOffset, 4));
// $SeekTableOffset += 4;
// }
//
// $info['shn']['seektable']['entries'][] = $SeekTableEntry;
//}
}
}
if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {
$info['error'][] = 'PHP running in Safe Mode - backtick operator not available, cannot run shntool to analyze Shorten files';
return false;
}
if (GetId3_GetId3::environmentIsWindows()) {
$RequiredFiles = array('shorten.exe', 'cygwin1.dll', 'head.exe');
foreach ($RequiredFiles as $required_file) {
if (!is_readable(GetId3_GetId3::getHelperAppsDir() . $required_file)) {
$info['error'][] = GetId3_GetId3::getHelperAppsDir() . $required_file . ' does not exist';
return false;
}
}
$commandline = GetId3_GetId3::getHelperAppsDir() . 'shorten.exe -x "' . $info['filenamepath'] . '" - | ' . GetId3_GetId3::getHelperAppsDir() . 'head.exe -c 64';
$commandline = str_replace('/', '\\', $commandline);
} else {
static $shorten_present;
if (!isset($shorten_present)) {
$shorten_present = file_exists('/usr/local/bin/shorten') || `which shorten`;
}
if (!$shorten_present) {
$info['error'][] = 'shorten binary was not found in path or /usr/local/bin';
return false;
}
$commandline = (file_exists('/usr/local/bin/shorten') ? '/usr/local/bin/' : '') . 'shorten -x ' . escapeshellarg($info['filenamepath']) . ' - | head -c 64';
}
$output = `{$commandline}`;
if (!empty($output) && substr($output, 12, 4) == 'fmt ') {
$fmt_size = GetId3_Lib_Helper::LittleEndian2Int(substr($output, 16, 4));
$DecodedWAVFORMATEX = GetId3_Module_AudioVideo_Riff::RIFFparseWAVEFORMATex(substr($output, 20, $fmt_size));
$info['audio']['channels'] = $DecodedWAVFORMATEX['channels'];
$info['audio']['bits_per_sample'] = $DecodedWAVFORMATEX['bits_per_sample'];
$info['audio']['sample_rate'] = $DecodedWAVFORMATEX['sample_rate'];
if (substr($output, 20 + $fmt_size, 4) == 'data') {
$info['playtime_seconds'] = GetId3_Lib_Helper::LittleEndian2Int(substr($output, 20 + 4 + $fmt_size, 4)) / $DecodedWAVFORMATEX['raw']['nAvgBytesPerSec'];
} else {
$info['error'][] = 'shorten failed to decode DATA chunk to expected location, cannot determine playtime';
return false;
}
$info['audio']['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
} else {
$info['error'][] = 'shorten failed to decode file to WAV for parsing';
return false;
}
return true;
}
public function RemoveID3v1()
{
// File MUST be writeable - CHMOD(646) at least
if (!empty($this->filename) && is_readable($this->filename) && is_writable($this->filename) && is_file($this->filename)) {
$this->setRealFileSize();
if ($this->filesize <= 0 || !GetId3_Lib_Helper::intValueSupported($this->filesize)) {
$this->errors[] = 'Unable to RemoveID3v1(' . $this->filename . ') because filesize (' . $this->filesize . ') is larger than ' . round(PHP_INT_MAX / 1073741824) . 'GB';
return false;
}
if ($fp_source = fopen($this->filename, 'r+b')) {
fseek($fp_source, -128, SEEK_END);
if (fread($fp_source, 3) == 'TAG') {
ftruncate($fp_source, $this->filesize - 128);
} else {
// no ID3v1 tag to begin with - do nothing
}
fclose($fp_source);
return true;
} else {
$this->errors[] = 'Could not fopen(' . $this->filename . ', "r+b")';
}
} else {
$this->errors[] = $this->filename . ' is not writeable';
}
return false;
}
/**
*
* @return boolean
*/
public function ParseMPCsv6()
{
// this is SV4 - SV6
$info =& $this->getid3->info;
$thisfile_mpc_header =& $info['mpc']['header'];
$offset = 0;
$thisfile_mpc_header['size'] = 8;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$MPCheaderData = fread($this->getid3->fp, $thisfile_mpc_header['size']);
// add size of file header to avdataoffset - calc bitrate correctly + MD5 data
$info['avdataoffset'] += $thisfile_mpc_header['size'];
// Most of this code adapted from Jurgen Faul's MPEGplus source code - thanks Jurgen! :)
$HeaderDWORD[0] = GetId3_Lib_Helper::LittleEndian2Int(substr($MPCheaderData, 0, 4));
$HeaderDWORD[1] = GetId3_Lib_Helper::LittleEndian2Int(substr($MPCheaderData, 4, 4));
// DDDD DDDD CCCC CCCC BBBB BBBB AAAA AAAA
// aaaa aaaa abcd dddd dddd deee eeff ffff
//
// a = bitrate = anything
// b = IS = anything
// c = MS = anything
// d = streamversion = 0000000004 or 0000000005 or 0000000006
// e = maxband = anything
// f = blocksize = 000001 for SV5+, anything(?) for SV4
$thisfile_mpc_header['target_bitrate'] = ($HeaderDWORD[0] & 0xff800000) >> 23;
$thisfile_mpc_header['intensity_stereo'] = (bool) (($HeaderDWORD[0] & 0x400000) >> 22);
$thisfile_mpc_header['mid_side_stereo'] = (bool) (($HeaderDWORD[0] & 0x200000) >> 21);
$thisfile_mpc_header['stream_version_major'] = ($HeaderDWORD[0] & 0x1ff800) >> 11;
$thisfile_mpc_header['stream_version_minor'] = 0;
// no sub-version numbers before SV7
$thisfile_mpc_header['max_band'] = ($HeaderDWORD[0] & 0x7c0) >> 6;
// related to lowpass frequency, not sure how it translates exactly
$thisfile_mpc_header['block_size'] = $HeaderDWORD[0] & 0x3f;
switch ($thisfile_mpc_header['stream_version_major']) {
case 4:
$thisfile_mpc_header['frame_count'] = $HeaderDWORD[1] >> 16;
break;
case 5:
case 6:
$thisfile_mpc_header['frame_count'] = $HeaderDWORD[1];
break;
default:
$info['error'] = 'Expecting 4, 5 or 6 in version field, found ' . $thisfile_mpc_header['stream_version_major'] . ' instead';
unset($info['mpc']);
return false;
break;
}
if ($thisfile_mpc_header['stream_version_major'] > 4 && $thisfile_mpc_header['block_size'] != 1) {
$info['warning'][] = 'Block size expected to be 1, actual value found: ' . $thisfile_mpc_header['block_size'];
}
$thisfile_mpc_header['sample_rate'] = 44100;
// AB: used by all files up to SV7
$info['audio']['sample_rate'] = $thisfile_mpc_header['sample_rate'];
$thisfile_mpc_header['samples'] = $thisfile_mpc_header['frame_count'] * 1152 * $info['audio']['channels'];
if ($thisfile_mpc_header['target_bitrate'] == 0) {
$info['audio']['bitrate_mode'] = 'vbr';
} else {
$info['audio']['bitrate_mode'] = 'cbr';
}
$info['mpc']['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 * 44100 / $thisfile_mpc_header['frame_count'] / 1152;
$info['audio']['bitrate'] = $info['mpc']['bitrate'];
$info['audio']['encoder'] = 'SV' . $thisfile_mpc_header['stream_version_major'];
return true;
}
/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
$info['fileformat'] = 'gif';
$info['video']['dataformat'] = 'gif';
$info['video']['lossless'] = true;
$info['video']['pixel_aspect_ratio'] = (double) 1;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$GIFheader = fread($this->getid3->fp, 13);
$offset = 0;
$info['gif']['header']['raw']['identifier'] = substr($GIFheader, $offset, 3);
$offset += 3;
$magic = 'GIF';
if ($info['gif']['header']['raw']['identifier'] != $magic) {
$info['error'][] = 'Expecting "' . GetId3_Lib_Helper::PrintHexBytes($magic) . '" at offset ' . $info['avdataoffset'] . ', found "' . GetId3_Lib_Helper::PrintHexBytes($info['gif']['header']['raw']['identifier']) . '"';
unset($info['fileformat']);
unset($info['gif']);
return false;
}
$info['gif']['header']['raw']['version'] = substr($GIFheader, $offset, 3);
$offset += 3;
$info['gif']['header']['raw']['width'] = GetId3_Lib_Helper::LittleEndian2Int(substr($GIFheader, $offset, 2));
$offset += 2;
$info['gif']['header']['raw']['height'] = GetId3_Lib_Helper::LittleEndian2Int(substr($GIFheader, $offset, 2));
$offset += 2;
$info['gif']['header']['raw']['flags'] = GetId3_Lib_Helper::LittleEndian2Int(substr($GIFheader, $offset, 1));
$offset += 1;
$info['gif']['header']['raw']['bg_color_index'] = GetId3_Lib_Helper::LittleEndian2Int(substr($GIFheader, $offset, 1));
$offset += 1;
$info['gif']['header']['raw']['aspect_ratio'] = GetId3_Lib_Helper::LittleEndian2Int(substr($GIFheader, $offset, 1));
$offset += 1;
$info['video']['resolution_x'] = $info['gif']['header']['raw']['width'];
$info['video']['resolution_y'] = $info['gif']['header']['raw']['height'];
$info['gif']['version'] = $info['gif']['header']['raw']['version'];
$info['gif']['header']['flags']['global_color_table'] = (bool) ($info['gif']['header']['raw']['flags'] & 0x80);
if ($info['gif']['header']['raw']['flags'] & 0x80) {
// Number of bits per primary color available to the original image, minus 1
$info['gif']['header']['bits_per_pixel'] = 3 * ((($info['gif']['header']['raw']['flags'] & 0x70) >> 4) + 1);
} else {
$info['gif']['header']['bits_per_pixel'] = 0;
}
$info['gif']['header']['flags']['global_color_sorted'] = (bool) ($info['gif']['header']['raw']['flags'] & 0x40);
if ($info['gif']['header']['flags']['global_color_table']) {
// the number of bytes contained in the Global Color Table. To determine that
// actual size of the color table, raise 2 to [the value of the field + 1]
$info['gif']['header']['global_color_size'] = pow(2, ($info['gif']['header']['raw']['flags'] & 0x7) + 1);
$info['video']['bits_per_sample'] = ($info['gif']['header']['raw']['flags'] & 0x7) + 1;
} else {
$info['gif']['header']['global_color_size'] = 0;
}
if ($info['gif']['header']['raw']['aspect_ratio'] != 0) {
// Aspect Ratio = (Pixel Aspect Ratio + 15) / 64
$info['gif']['header']['aspect_ratio'] = ($info['gif']['header']['raw']['aspect_ratio'] + 15) / 64;
}
// if ($info['gif']['header']['flags']['global_color_table']) {
// $GIFcolorTable = fread($this->getid3->fp, 3 * $info['gif']['header']['global_color_size']);
// $offset = 0;
// for ($i = 0; $i < $info['gif']['header']['global_color_size']; $i++) {
// $red = GetId3_lib::LittleEndian2Int(substr($GIFcolorTable, $offset++, 1));
// $green = GetId3_lib::LittleEndian2Int(substr($GIFcolorTable, $offset++, 1));
// $blue = GetId3_lib::LittleEndian2Int(substr($GIFcolorTable, $offset++, 1));
// $info['gif']['global_color_table'][$i] = (($red << 16) | ($green << 8) | ($blue));
// }
// }
//
// // Image Descriptor
// while (!feof($this->getid3->fp)) {
// $NextBlockTest = fread($this->getid3->fp, 1);
// switch ($NextBlockTest) {
//
// case ',': // ',' - Image separator character
//
// $ImageDescriptorData = $NextBlockTest.fread($this->getid3->fp, 9);
// $ImageDescriptor = array();
// $ImageDescriptor['image_left'] = GetId3_lib::LittleEndian2Int(substr($ImageDescriptorData, 1, 2));
// $ImageDescriptor['image_top'] = GetId3_lib::LittleEndian2Int(substr($ImageDescriptorData, 3, 2));
// $ImageDescriptor['image_width'] = GetId3_lib::LittleEndian2Int(substr($ImageDescriptorData, 5, 2));
// $ImageDescriptor['image_height'] = GetId3_lib::LittleEndian2Int(substr($ImageDescriptorData, 7, 2));
// $ImageDescriptor['flags_raw'] = GetId3_lib::LittleEndian2Int(substr($ImageDescriptorData, 9, 1));
// $ImageDescriptor['flags']['use_local_color_map'] = (bool) ($ImageDescriptor['flags_raw'] & 0x80);
// $ImageDescriptor['flags']['image_interlaced'] = (bool) ($ImageDescriptor['flags_raw'] & 0x40);
// $info['gif']['image_descriptor'][] = $ImageDescriptor;
//
// if ($ImageDescriptor['flags']['use_local_color_map']) {
//
// $info['warning'][] = 'This version of GetId3() cannot parse local color maps for GIFs';
// return true;
//
// }
//echo 'Start of raster data: '.ftell($this->getid3->fp).'<BR>';
// $RasterData = array();
// $RasterData['code_size'] = GetId3_lib::LittleEndian2Int(fread($this->getid3->fp, 1));
// $RasterData['block_byte_count'] = GetId3_lib::LittleEndian2Int(fread($this->getid3->fp, 1));
// $info['gif']['raster_data'][count($info['gif']['image_descriptor']) - 1] = $RasterData;
//
// $CurrentCodeSize = $RasterData['code_size'] + 1;
// for ($i = 0; $i < pow(2, $RasterData['code_size']); $i++) {
// $DefaultDataLookupTable[$i] = chr($i);
// }
// $DefaultDataLookupTable[pow(2, $RasterData['code_size']) + 0] = ''; // Clear Code
// $DefaultDataLookupTable[pow(2, $RasterData['code_size']) + 1] = ''; // End Of Image Code
//
//
// $NextValue = $this->GetLSBits($CurrentCodeSize);
// echo 'Clear Code: '.$NextValue.'<BR>';
//
// $NextValue = $this->GetLSBits($CurrentCodeSize);
// echo 'First Color: '.$NextValue.'<BR>';
//
// $Prefix = $NextValue;
//$i = 0;
// while ($i++ < 20) {
// $NextValue = $this->GetLSBits($CurrentCodeSize);
// echo $NextValue.'<BR>';
// }
//return true;
// break;
//
// case '!':
// // GIF Extension Block
// $ExtensionBlockData = $NextBlockTest.fread($this->getid3->fp, 2);
// $ExtensionBlock = array();
// $ExtensionBlock['function_code'] = GetId3_lib::LittleEndian2Int(substr($ExtensionBlockData, 1, 1));
// $ExtensionBlock['byte_length'] = GetId3_lib::LittleEndian2Int(substr($ExtensionBlockData, 2, 1));
// $ExtensionBlock['data'] = fread($this->getid3->fp, $ExtensionBlock['byte_length']);
// $info['gif']['extension_blocks'][] = $ExtensionBlock;
// break;
//
// case ';':
// $info['gif']['terminator_offset'] = ftell($this->getid3->fp) - 1;
// // GIF Terminator
// break;
//
// default:
// break;
//
//
// }
// }
return true;
}
/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$LPACheader = fread($this->getid3->fp, 14);
if (substr($LPACheader, 0, 4) != 'LPAC') {
$info['error'][] = 'Expected "LPAC" at offset ' . $info['avdataoffset'] . ', found "' . $StreamMarker . '"';
return false;
}
$info['avdataoffset'] += 14;
$info['fileformat'] = 'lpac';
$info['audio']['dataformat'] = 'lpac';
$info['audio']['lossless'] = true;
$info['audio']['bitrate_mode'] = 'vbr';
$info['lpac']['file_version'] = GetId3_Lib_Helper::BigEndian2Int(substr($LPACheader, 4, 1));
$flags['audio_type'] = GetId3_Lib_Helper::BigEndian2Int(substr($LPACheader, 5, 1));
$info['lpac']['total_samples'] = GetId3_Lib_Helper::BigEndian2Int(substr($LPACheader, 6, 4));
$flags['parameters'] = GetId3_Lib_Helper::BigEndian2Int(substr($LPACheader, 10, 4));
$info['lpac']['flags']['is_wave'] = (bool) ($flags['audio_type'] & 0x40);
$info['lpac']['flags']['stereo'] = (bool) ($flags['audio_type'] & 0x4);
$info['lpac']['flags']['24_bit'] = (bool) ($flags['audio_type'] & 0x2);
$info['lpac']['flags']['16_bit'] = (bool) ($flags['audio_type'] & 0x1);
if ($info['lpac']['flags']['24_bit'] && $info['lpac']['flags']['16_bit']) {
$info['warning'][] = '24-bit and 16-bit flags cannot both be set';
}
$info['lpac']['flags']['fast_compress'] = (bool) ($flags['parameters'] & 0x40000000);
$info['lpac']['flags']['random_access'] = (bool) ($flags['parameters'] & 0x8000000);
$info['lpac']['block_length'] = pow(2, ($flags['parameters'] & 0x7000000) >> 24) * 256;
$info['lpac']['flags']['adaptive_prediction_order'] = (bool) ($flags['parameters'] & 0x800000);
$info['lpac']['flags']['adaptive_quantization'] = (bool) ($flags['parameters'] & 0x400000);
$info['lpac']['flags']['joint_stereo'] = (bool) ($flags['parameters'] & 0x40000);
$info['lpac']['quantization'] = ($flags['parameters'] & 0x1f00) >> 8;
$info['lpac']['max_prediction_order'] = $flags['parameters'] & 0x3f;
if ($info['lpac']['flags']['fast_compress'] && $info['lpac']['max_prediction_order'] != 3) {
$info['warning'][] = 'max_prediction_order expected to be "3" if fast_compress is true, actual value is "' . $info['lpac']['max_prediction_order'] . '"';
}
switch ($info['lpac']['file_version']) {
case 6:
if ($info['lpac']['flags']['adaptive_quantization']) {
$info['warning'][] = 'adaptive_quantization expected to be false in LPAC file stucture v6, actually true';
}
if ($info['lpac']['quantization'] != 20) {
$info['warning'][] = 'Quantization expected to be 20 in LPAC file stucture v6, actually ' . $info['lpac']['flags']['Q'];
}
break;
default:
//$info['warning'][] = 'This version of GetId3() ['.$this->getid3->version().'] only supports LPAC file format version 6, this file is version '.$info['lpac']['file_version'].' - please report to info@getid3.org';
break;
}
$getid3_temp = new GetId3_GetId3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info = $info;
$getid3_riff = new GetId3_Module_AudioVideo_Riff($getid3_temp);
$getid3_riff->Analyze();
$info['avdataoffset'] = $getid3_temp->info['avdataoffset'];
$info['riff'] = $getid3_temp->info['riff'];
$info['error'] = $getid3_temp->info['error'];
$info['warning'] = $getid3_temp->info['warning'];
$info['lpac']['comments']['comment'] = $getid3_temp->info['comments'];
$info['audio']['sample_rate'] = $getid3_temp->info['audio']['sample_rate'];
unset($getid3_temp, $getid3_riff);
$info['audio']['channels'] = $info['lpac']['flags']['stereo'] ? 2 : 1;
if ($info['lpac']['flags']['24_bit']) {
$info['audio']['bits_per_sample'] = $info['riff']['audio'][0]['bits_per_sample'];
} elseif ($info['lpac']['flags']['16_bit']) {
$info['audio']['bits_per_sample'] = 16;
} else {
$info['audio']['bits_per_sample'] = 8;
}
if ($info['lpac']['flags']['fast_compress']) {
// fast
$info['audio']['encoder_options'] = '-1';
} else {
switch ($info['lpac']['max_prediction_order']) {
case 20:
// simple
$info['audio']['encoder_options'] = '-2';
break;
case 30:
// medium
$info['audio']['encoder_options'] = '-3';
break;
case 40:
// high
$info['audio']['encoder_options'] = '-4';
break;
case 60:
// extrahigh
$info['audio']['encoder_options'] = '-5';
break;
}
}
$info['playtime_seconds'] = $info['lpac']['total_samples'] / $info['audio']['sample_rate'];
$info['audio']['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['playtime_seconds'];
return true;
}
/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
$offset = 0;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$rawdata = fread($this->getid3->fp, $this->getid3->fread_buffer_size());
switch (substr($rawdata, $offset, 4)) {
case 'LA02':
case 'LA03':
case 'LA04':
$info['fileformat'] = 'la';
$info['audio']['dataformat'] = 'la';
$info['audio']['lossless'] = true;
$info['la']['version_major'] = (int) substr($rawdata, $offset + 2, 1);
$info['la']['version_minor'] = (int) substr($rawdata, $offset + 3, 1);
$info['la']['version'] = (double) $info['la']['version_major'] + $info['la']['version_minor'] / 10;
$offset += 4;
$info['la']['uncompressed_size'] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 4));
$offset += 4;
if ($info['la']['uncompressed_size'] == 0) {
$info['error'][] = 'Corrupt LA file: uncompressed_size == zero';
return false;
}
$WAVEchunk = substr($rawdata, $offset, 4);
if ($WAVEchunk !== 'WAVE') {
$info['error'][] = 'Expected "WAVE" (' . GetId3_Lib_Helper::PrintHexBytes('WAVE') . ') at offset ' . $offset . ', found "' . $WAVEchunk . '" (' . GetId3_Lib_Helper::PrintHexBytes($WAVEchunk) . ') instead.';
return false;
}
$offset += 4;
$info['la']['fmt_size'] = 24;
if ($info['la']['version'] >= 0.3) {
$info['la']['fmt_size'] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 4));
$info['la']['header_size'] = 49 + $info['la']['fmt_size'] - 24;
$offset += 4;
} else {
// version 0.2 didn't support additional data blocks
$info['la']['header_size'] = 41;
}
$fmt_chunk = substr($rawdata, $offset, 4);
if ($fmt_chunk !== 'fmt ') {
$info['error'][] = 'Expected "fmt " (' . GetId3_Lib_Helper::PrintHexBytes('fmt ') . ') at offset ' . $offset . ', found "' . $fmt_chunk . '" (' . GetId3_Lib_Helper::PrintHexBytes($fmt_chunk) . ') instead.';
return false;
}
$offset += 4;
$fmt_size = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 4));
$offset += 4;
$info['la']['raw']['format'] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 2));
$offset += 2;
$info['la']['channels'] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 2));
$offset += 2;
if ($info['la']['channels'] == 0) {
$info['error'][] = 'Corrupt LA file: channels == zero';
return false;
}
$info['la']['sample_rate'] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 4));
$offset += 4;
if ($info['la']['sample_rate'] == 0) {
$info['error'][] = 'Corrupt LA file: sample_rate == zero';
return false;
}
$info['la']['bytes_per_second'] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 4));
$offset += 4;
$info['la']['bytes_per_sample'] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 2));
$offset += 2;
$info['la']['bits_per_sample'] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 2));
$offset += 2;
$info['la']['samples'] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 4));
$offset += 4;
$info['la']['raw']['flags'] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 1));
$offset += 1;
$info['la']['flags']['seekable'] = (bool) ($info['la']['raw']['flags'] & 0x1);
if ($info['la']['version'] >= 0.4) {
$info['la']['flags']['high_compression'] = (bool) ($info['la']['raw']['flags'] & 0x2);
}
$info['la']['original_crc'] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 4));
$offset += 4;
// mikeØbevin*de
// Basically, the blocksize/seekevery are 61440/19 in La0.4 and 73728/16
// in earlier versions. A seekpoint is added every blocksize * seekevery
// samples, so 4 * int(totalSamples / (blockSize * seekEvery)) should
// give the number of bytes used for the seekpoints. Of course, if seeking
// is disabled, there are no seekpoints stored.
if ($info['la']['version'] >= 0.4) {
$info['la']['blocksize'] = 61440;
$info['la']['seekevery'] = 19;
} else {
$info['la']['blocksize'] = 73728;
$info['la']['seekevery'] = 16;
}
$info['la']['seekpoint_count'] = 0;
if ($info['la']['flags']['seekable']) {
$info['la']['seekpoint_count'] = floor($info['la']['samples'] / ($info['la']['blocksize'] * $info['la']['seekevery']));
for ($i = 0; $i < $info['la']['seekpoint_count']; $i++) {
$info['la']['seekpoints'][] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 4));
$offset += 4;
}
}
if ($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.
$info['la']['footerstart'] = GetId3_Lib_Helper::LittleEndian2Int(substr($rawdata, $offset, 4));
$offset += 4;
if ($info['la']['footerstart'] > $info['filesize']) {
$info['warning'][] = 'FooterStart value points to offset ' . $info['la']['footerstart'] . ' which is beyond end-of-file (' . $info['filesize'] . ')';
$info['la']['footerstart'] = $info['filesize'];
}
} else {
// La v0.2 didn't have FooterStart value
$info['la']['footerstart'] = $info['avdataend'];
}
if ($info['la']['footerstart'] < $info['avdataend']) {
if ($RIFFtempfilename = tempnam(GetId3_GetId3::getTempDir(), 'id3')) {
if ($RIFF_fp = fopen($RIFFtempfilename, 'w+b')) {
$RIFFdata = 'WAVE';
if ($info['la']['version'] == 0.2) {
$RIFFdata .= substr($rawdata, 12, 24);
} else {
$RIFFdata .= substr($rawdata, 16, 24);
}
if ($info['la']['footerstart'] < $info['avdataend']) {
fseek($this->getid3->fp, $info['la']['footerstart'], SEEK_SET);
$RIFFdata .= fread($this->getid3->fp, $info['avdataend'] - $info['la']['footerstart']);
}
$RIFFdata = 'RIFF' . GetId3_Lib_Helper::LittleEndian2String(strlen($RIFFdata), 4, false) . $RIFFdata;
fwrite($RIFF_fp, $RIFFdata, strlen($RIFFdata));
fclose($RIFF_fp);
$getid3_temp = new GetId3_GetId3();
$getid3_temp->openfile($RIFFtempfilename);
$getid3_riff = new GetId3_Module_AudioVideo_Riff($getid3_temp);
$getid3_riff->Analyze();
if (empty($getid3_temp->info['error'])) {
$info['riff'] = $getid3_temp->info['riff'];
} else {
$info['warning'][] = 'Error parsing RIFF portion of La file: ' . implode($getid3_temp->info['error']);
}
unset($getid3_temp, $getid3_riff);
}
unlink($RIFFtempfilename);
}
}
// $info['avdataoffset'] should be zero to begin with, but just in case it's not, include the addition anyway
$info['avdataend'] = $info['avdataoffset'] + $info['la']['footerstart'];
$info['avdataoffset'] = $info['avdataoffset'] + $offset;
//$info['la']['codec'] = RIFFwFormatTagLookup($info['la']['raw']['format']);
$info['la']['compression_ratio'] = (double) (($info['avdataend'] - $info['avdataoffset']) / $info['la']['uncompressed_size']);
$info['playtime_seconds'] = (double) ($info['la']['samples'] / $info['la']['sample_rate']) / $info['la']['channels'];
if ($info['playtime_seconds'] == 0) {
$info['error'][] = 'Corrupt LA file: playtime_seconds == zero';
return false;
}
$info['audio']['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['playtime_seconds'];
//$info['audio']['codec'] = $info['la']['codec'];
$info['audio']['bits_per_sample'] = $info['la']['bits_per_sample'];
break;
default:
if (substr($rawdata, $offset, 2) == 'LA') {
$info['error'][] = 'This version of GetId3() [' . $this->getid3->version() . '] does not support LA version ' . substr($rawdata, $offset + 2, 1) . '.' . substr($rawdata, $offset + 3, 1) . ' which this appears to be - check http://getid3.sourceforge.net for updates.';
} else {
$info['error'][] = 'Not a LA (Lossless-Audio) file';
}
return false;
break;
}
$info['audio']['channels'] = $info['la']['channels'];
$info['audio']['sample_rate'] = (int) $info['la']['sample_rate'];
$info['audio']['encoder'] = 'LA v' . $info['la']['version'];
return true;
}
/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$FLVdataLength = $info['avdataend'] - $info['avdataoffset'];
$FLVheader = fread($this->getid3->fp, 5);
$info['fileformat'] = 'flv';
$info['flv']['header']['signature'] = substr($FLVheader, 0, 3);
$info['flv']['header']['version'] = GetId3_Lib_Helper::BigEndian2Int(substr($FLVheader, 3, 1));
$TypeFlags = GetId3_Lib_Helper::BigEndian2Int(substr($FLVheader, 4, 1));
$magic = 'FLV';
if ($info['flv']['header']['signature'] != $magic) {
$info['error'][] = 'Expecting "' . GetId3_Lib_Helper::PrintHexBytes($magic) . '" at offset ' . $info['avdataoffset'] . ', found "' . GetId3_Lib_Helper::PrintHexBytes($info['flv']['header']['signature']) . '"';
unset($info['flv']);
unset($info['fileformat']);
return false;
}
$info['flv']['header']['hasAudio'] = (bool) ($TypeFlags & 0x4);
$info['flv']['header']['hasVideo'] = (bool) ($TypeFlags & 0x1);
$FrameSizeDataLength = GetId3_Lib_Helper::BigEndian2Int(fread($this->getid3->fp, 4));
$FLVheaderFrameLength = 9;
if ($FrameSizeDataLength > $FLVheaderFrameLength) {
fseek($this->getid3->fp, $FrameSizeDataLength - $FLVheaderFrameLength, SEEK_CUR);
}
$Duration = 0;
$found_video = false;
$found_audio = false;
$found_meta = false;
$found_valid_meta_playtime = false;
$tagParseCount = 0;
$info['flv']['framecount'] = array('total' => 0, 'audio' => 0, 'video' => 0);
$flv_framecount =& $info['flv']['framecount'];
while (ftell($this->getid3->fp) + 16 < $info['avdataend'] && ($tagParseCount++ <= $this->max_frames || !$found_valid_meta_playtime)) {
$ThisTagHeader = fread($this->getid3->fp, 16);
$PreviousTagLength = GetId3_Lib_Helper::BigEndian2Int(substr($ThisTagHeader, 0, 4));
$TagType = GetId3_Lib_Helper::BigEndian2Int(substr($ThisTagHeader, 4, 1));
$DataLength = GetId3_Lib_Helper::BigEndian2Int(substr($ThisTagHeader, 5, 3));
$Timestamp = GetId3_Lib_Helper::BigEndian2Int(substr($ThisTagHeader, 8, 3));
$LastHeaderByte = GetId3_Lib_Helper::BigEndian2Int(substr($ThisTagHeader, 15, 1));
$NextOffset = ftell($this->getid3->fp) - 1 + $DataLength;
if ($Timestamp > $Duration) {
$Duration = $Timestamp;
}
$flv_framecount['total']++;
switch ($TagType) {
case self::GETID3_FLV_TAG_AUDIO:
$flv_framecount['audio']++;
if (!$found_audio) {
$found_audio = true;
$info['flv']['audio']['audioFormat'] = $LastHeaderByte >> 4 & 0xf;
$info['flv']['audio']['audioRate'] = $LastHeaderByte >> 2 & 0x3;
$info['flv']['audio']['audioSampleSize'] = $LastHeaderByte >> 1 & 0x1;
$info['flv']['audio']['audioType'] = $LastHeaderByte & 0x1;
}
break;
case self::GETID3_FLV_TAG_VIDEO:
$flv_framecount['video']++;
if (!$found_video) {
$found_video = true;
$info['flv']['video']['videoCodec'] = $LastHeaderByte & 0x7;
$FLVvideoHeader = fread($this->getid3->fp, 11);
if ($info['flv']['video']['videoCodec'] == self::GETID3_FLV_VIDEO_H264) {
// this code block contributed by: moysevichØgmail*com
$AVCPacketType = GetId3_Lib_Helper::BigEndian2Int(substr($FLVvideoHeader, 0, 1));
if ($AVCPacketType == GetId3_Module_AudioVideo_AVCSequenceParameterSetReader::H264_AVC_SEQUENCE_HEADER) {
// read AVCDecoderConfigurationRecord
$configurationVersion = GetId3_Lib_Helper::BigEndian2Int(substr($FLVvideoHeader, 4, 1));
$AVCProfileIndication = GetId3_Lib_Helper::BigEndian2Int(substr($FLVvideoHeader, 5, 1));
$profile_compatibility = GetId3_Lib_Helper::BigEndian2Int(substr($FLVvideoHeader, 6, 1));
$lengthSizeMinusOne = GetId3_Lib_Helper::BigEndian2Int(substr($FLVvideoHeader, 7, 1));
$numOfSequenceParameterSets = GetId3_Lib_Helper::BigEndian2Int(substr($FLVvideoHeader, 8, 1));
if (($numOfSequenceParameterSets & 0x1f) != 0) {
// there is at least one SequenceParameterSet
// read size of the first SequenceParameterSet
//$spsSize = GetId3_lib::BigEndian2Int(substr($FLVvideoHeader, 9, 2));
$spsSize = GetId3_Lib_Helper::LittleEndian2Int(substr($FLVvideoHeader, 9, 2));
// read the first SequenceParameterSet
$sps = fread($this->getid3->fp, $spsSize);
if (strlen($sps) == $spsSize) {
// make sure that whole SequenceParameterSet was red
$spsReader = new GetId3_Module_AudioVideo_AVCSequenceParameterSetReader($sps);
$spsReader->readData();
$info['video']['resolution_x'] = $spsReader->getWidth();
$info['video']['resolution_y'] = $spsReader->getHeight();
}
}
}
// end: moysevichØgmail*com
} elseif ($info['flv']['video']['videoCodec'] == self::GETID3_FLV_VIDEO_H263) {
$PictureSizeType = GetId3_Lib_Helper::BigEndian2Int(substr($FLVvideoHeader, 3, 2)) >> 7;
$PictureSizeType = $PictureSizeType & 0x7;
$info['flv']['header']['videoSizeType'] = $PictureSizeType;
switch ($PictureSizeType) {
case 0:
//$PictureSizeEnc = GetId3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2));
//$PictureSizeEnc <<= 1;
//$info['video']['resolution_x'] = ($PictureSizeEnc & 0xFF00) >> 8;
//$PictureSizeEnc = GetId3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 2));
//$PictureSizeEnc <<= 1;
//$info['video']['resolution_y'] = ($PictureSizeEnc & 0xFF00) >> 8;
$PictureSizeEnc['x'] = GetId3_Lib_Helper::BigEndian2Int(substr($FLVvideoHeader, 4, 2));
$PictureSizeEnc['y'] = GetId3_Lib_Helper::BigEndian2Int(substr($FLVvideoHeader, 5, 2));
$PictureSizeEnc['x'] >>= 7;
$PictureSizeEnc['y'] >>= 7;
$info['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xff;
$info['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xff;
break;
case 1:
$PictureSizeEnc['x'] = GetId3_Lib_Helper::BigEndian2Int(substr($FLVvideoHeader, 4, 3));
$PictureSizeEnc['y'] = GetId3_Lib_Helper::BigEndian2Int(substr($FLVvideoHeader, 6, 3));
$PictureSizeEnc['x'] >>= 7;
$PictureSizeEnc['y'] >>= 7;
$info['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xffff;
$info['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xffff;
break;
case 2:
$info['video']['resolution_x'] = 352;
$info['video']['resolution_y'] = 288;
break;
case 3:
$info['video']['resolution_x'] = 176;
$info['video']['resolution_y'] = 144;
break;
case 4:
$info['video']['resolution_x'] = 128;
$info['video']['resolution_y'] = 96;
break;
case 5:
$info['video']['resolution_x'] = 320;
$info['video']['resolution_y'] = 240;
break;
case 6:
$info['video']['resolution_x'] = 160;
$info['video']['resolution_y'] = 120;
break;
default:
$info['video']['resolution_x'] = 0;
$info['video']['resolution_y'] = 0;
break;
}
}
$info['video']['pixel_aspect_ratio'] = $info['video']['resolution_x'] / $info['video']['resolution_y'];
}
break;
// Meta tag
// Meta tag
case self::GETID3_FLV_TAG_META:
if (!$found_meta) {
$found_meta = true;
fseek($this->getid3->fp, -1, SEEK_CUR);
$datachunk = fread($this->getid3->fp, $DataLength);
$AMFstream = new GetId3_Module_AudioVideo_AMFStream($datachunk);
$reader = new GetId3_Module_AudioVideo_AMFReader($AMFstream);
$eventName = $reader->readData();
$info['flv']['meta'][$eventName] = $reader->readData();
unset($reader);
$copykeys = array('framerate' => 'frame_rate', 'width' => 'resolution_x', 'height' => 'resolution_y', 'audiodatarate' => 'bitrate', 'videodatarate' => 'bitrate');
foreach ($copykeys as $sourcekey => $destkey) {
if (isset($info['flv']['meta']['onMetaData'][$sourcekey])) {
switch ($sourcekey) {
case 'width':
case 'height':
$info['video'][$destkey] = intval(round($info['flv']['meta']['onMetaData'][$sourcekey]));
break;
case 'audiodatarate':
$info['audio'][$destkey] = GetId3_Lib_Helper::CastAsInt(round($info['flv']['meta']['onMetaData'][$sourcekey] * 1000));
break;
case 'videodatarate':
case 'frame_rate':
default:
$info['video'][$destkey] = $info['flv']['meta']['onMetaData'][$sourcekey];
break;
}
}
}
if (!empty($info['flv']['meta']['onMetaData']['duration'])) {
$found_valid_meta_playtime = true;
}
}
break;
default:
// noop
break;
}
fseek($this->getid3->fp, $NextOffset, SEEK_SET);
}
$info['playtime_seconds'] = $Duration / 1000;
if ($info['playtime_seconds'] > 0) {
$info['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['playtime_seconds'];
}
if ($info['flv']['header']['hasAudio']) {
$info['audio']['codec'] = $this->FLVaudioFormat($info['flv']['audio']['audioFormat']);
$info['audio']['sample_rate'] = $this->FLVaudioRate($info['flv']['audio']['audioRate']);
$info['audio']['bits_per_sample'] = $this->FLVaudioBitDepth($info['flv']['audio']['audioSampleSize']);
$info['audio']['channels'] = $info['flv']['audio']['audioType'] + 1;
// 0=mono,1=stereo
$info['audio']['lossless'] = $info['flv']['audio']['audioFormat'] ? false : true;
// 0=uncompressed
$info['audio']['dataformat'] = 'flv';
}
if (!empty($info['flv']['header']['hasVideo'])) {
$info['video']['codec'] = $this->FLVvideoCodec($info['flv']['video']['videoCodec']);
$info['video']['dataformat'] = 'flv';
$info['video']['lossless'] = false;
}
// Set information from meta
if (!empty($info['flv']['meta']['onMetaData']['duration'])) {
$info['playtime_seconds'] = $info['flv']['meta']['onMetaData']['duration'];
$info['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['playtime_seconds'];
}
if (isset($info['flv']['meta']['onMetaData']['audiocodecid'])) {
$info['audio']['codec'] = $this->FLVaudioFormat($info['flv']['meta']['onMetaData']['audiocodecid']);
}
if (isset($info['flv']['meta']['onMetaData']['videocodecid'])) {
$info['video']['codec'] = $this->FLVvideoCodec($info['flv']['meta']['onMetaData']['videocodecid']);
}
return true;
}
public function Analyze()
{
$info =& $this->getid3->info;
// http://cui.unige.ch/OSG/info/AudioFormats/ap11.html
// http://www.btinternet.com/~AnthonyJ/Atari/programming/avr_format.html
// offset type length name comments
// ---------------------------------------------------------------------
// 0 char 4 ID format ID == "2BIT"
// 4 char 8 name sample name (unused space filled with 0)
// 12 short 1 mono/stereo 0=mono, -1 (0xFFFF)=stereo
// With stereo, samples are alternated,
// the first voice is the left :
// (LRLRLRLRLRLRLRLRLR...)
// 14 short 1 resolution 8, 12 or 16 (bits)
// 16 short 1 signed or not 0=unsigned, -1 (0xFFFF)=signed
// 18 short 1 loop or not 0=no loop, -1 (0xFFFF)=loop on
// 20 short 1 MIDI note 0xFFnn, where 0 <= nn <= 127
// 0xFFFF means "no MIDI note defined"
// 22 byte 1 Replay speed Frequence in the Replay software
// 0=5.485 Khz, 1=8.084 Khz, 2=10.971 Khz,
// 3=16.168 Khz, 4=21.942 Khz, 5=32.336 Khz
// 6=43.885 Khz, 7=47.261 Khz
// -1 (0xFF)=no defined Frequence
// 23 byte 3 sample rate in Hertz
// 26 long 1 size in bytes (2 * bytes in stereo)
// 30 long 1 loop begin 0 for no loop
// 34 long 1 loop size equal to 'size' for no loop
// 38 short 2 Reserved, MIDI keyboard split */
// 40 short 2 Reserved, sample compression */
// 42 short 2 Reserved */
// 44 char 20; Additional filename space, used if (name[7] != 0)
// 64 byte 64 user data
// 128 bytes ? sample data (12 bits samples are coded on 16 bits:
// 0000 xxxx xxxx xxxx)
// ---------------------------------------------------------------------
// Note that all values are in motorola (big-endian) format, and that long is
// assumed to be 4 bytes, and short 2 bytes.
// When reading the samples, you should handle both signed and unsigned data,
// and be prepared to convert 16->8 bit, or mono->stereo if needed. To convert
// 8-bit data between signed/unsigned just add 127 to the sample values.
// Simularly for 16-bit data you should add 32769
$info['fileformat'] = 'avr';
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$AVRheader = fread($this->getid3->fp, 128);
$info['avr']['raw']['magic'] = substr($AVRheader, 0, 4);
$magic = '2BIT';
if ($info['avr']['raw']['magic'] != $magic) {
$info['error'][] = 'Expecting "' . GetId3_Lib_Helper::PrintHexBytes($magic) . '" at offset ' . $info['avdataoffset'] . ', found "' . GetId3_Lib_Helper::PrintHexBytes($info['avr']['raw']['magic']) . '"';
unset($info['fileformat']);
unset($info['avr']);
return false;
}
$info['avdataoffset'] += 128;
$info['avr']['sample_name'] = rtrim(substr($AVRheader, 4, 8));
$info['avr']['raw']['mono'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 12, 2));
$info['avr']['bits_per_sample'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 14, 2));
$info['avr']['raw']['signed'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 16, 2));
$info['avr']['raw']['loop'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 18, 2));
$info['avr']['raw']['midi'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 20, 2));
$info['avr']['raw']['replay_freq'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 22, 1));
$info['avr']['sample_rate'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 23, 3));
$info['avr']['sample_length'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 26, 4));
$info['avr']['loop_start'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 30, 4));
$info['avr']['loop_end'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 34, 4));
$info['avr']['midi_split'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 38, 2));
$info['avr']['sample_compression'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 40, 2));
$info['avr']['reserved'] = GetId3_Lib_Helper::BigEndian2Int(substr($AVRheader, 42, 2));
$info['avr']['sample_name_extra'] = rtrim(substr($AVRheader, 44, 20));
$info['avr']['comment'] = rtrim(substr($AVRheader, 64, 64));
$info['avr']['flags']['stereo'] = $info['avr']['raw']['mono'] == 0 ? false : true;
$info['avr']['flags']['signed'] = $info['avr']['raw']['signed'] == 0 ? false : true;
$info['avr']['flags']['loop'] = $info['avr']['raw']['loop'] == 0 ? false : true;
$info['avr']['midi_notes'] = array();
if (($info['avr']['raw']['midi'] & 0xff00) != 0xff00) {
$info['avr']['midi_notes'][] = ($info['avr']['raw']['midi'] & 0xff00) >> 8;
}
if (($info['avr']['raw']['midi'] & 0xff) != 0xff) {
$info['avr']['midi_notes'][] = $info['avr']['raw']['midi'] & 0xff;
}
if ($info['avdataend'] - $info['avdataoffset'] != $info['avr']['sample_length'] * ($info['avr']['bits_per_sample'] == 8 ? 1 : 2)) {
$info['warning'][] = 'Probable truncated file: expecting ' . $info['avr']['sample_length'] * ($info['avr']['bits_per_sample'] == 8 ? 1 : 2) . ' bytes of audio data, found ' . ($info['avdataend'] - $info['avdataoffset']);
}
$info['audio']['dataformat'] = 'avr';
$info['audio']['lossless'] = true;
$info['audio']['bitrate_mode'] = 'cbr';
$info['audio']['bits_per_sample'] = $info['avr']['bits_per_sample'];
$info['audio']['sample_rate'] = $info['avr']['sample_rate'];
$info['audio']['channels'] = $info['avr']['flags']['stereo'] ? 2 : 1;
$info['playtime_seconds'] = $info['avr']['sample_length'] / $info['audio']['channels'] / $info['avr']['sample_rate'];
$info['audio']['bitrate'] = $info['avr']['sample_length'] * ($info['avr']['bits_per_sample'] == 8 ? 8 : 16) / $info['playtime_seconds'];
return true;
}
/**
*
* @return string
*/
public function GenerateCONTchunk()
{
foreach ($this->tag_data as $key => $value) {
// limit each value to 0xFFFF bytes
$this->tag_data[$key] = substr($value, 0, 65535);
}
$CONTchunk = "";
// object version
$CONTchunk .= GetId3_Lib_Helper::BigEndian2String(!empty($this->tag_data['title']) ? strlen($this->tag_data['title']) : 0, 2);
$CONTchunk .= !empty($this->tag_data['title']) ? strlen($this->tag_data['title']) : '';
$CONTchunk .= GetId3_Lib_Helper::BigEndian2String(!empty($this->tag_data['artist']) ? strlen($this->tag_data['artist']) : 0, 2);
$CONTchunk .= !empty($this->tag_data['artist']) ? strlen($this->tag_data['artist']) : '';
$CONTchunk .= GetId3_Lib_Helper::BigEndian2String(!empty($this->tag_data['copyright']) ? strlen($this->tag_data['copyright']) : 0, 2);
$CONTchunk .= !empty($this->tag_data['copyright']) ? strlen($this->tag_data['copyright']) : '';
$CONTchunk .= GetId3_Lib_Helper::BigEndian2String(!empty($this->tag_data['comment']) ? strlen($this->tag_data['comment']) : 0, 2);
$CONTchunk .= !empty($this->tag_data['comment']) ? strlen($this->tag_data['comment']) : '';
if ($this->paddedlength > strlen($CONTchunk) + 8) {
$CONTchunk .= str_repeat("", $this->paddedlength - strlen($CONTchunk) - 8);
}
$CONTchunk = 'CONT' . GetId3_Lib_Helper::BigEndian2String(strlen($CONTchunk) + 8, 4) . $CONTchunk;
// CONT chunk identifier + chunk length
return $CONTchunk;
}
/**
*
* @staticvar array $decbin
* @param type $MaxFramesToScan
* @param type $ReturnExtendedInfo
* @return boolean
*/
public function getAACADTSheaderFilepointer($MaxFramesToScan = 1000000, $ReturnExtendedInfo = false)
{
$info =& $this->getid3->info;
// based loosely on code from AACfile by Jurgen Faul <jfaulØgmx.de>
// http://jfaul.de/atl or http://j-faul.virtualave.net/atl/atl.html
// http://faac.sourceforge.net/wiki/index.php?page=ADTS // dead link
// http://wiki.multimedia.cx/index.php?title=ADTS
// * ADTS Fixed Header: these don't change from frame to frame
// syncword 12 always: '111111111111'
// ID 1 0: MPEG-4, 1: MPEG-2
// MPEG layer 2 If you send AAC in MPEG-TS, set to 0
// protection_absent 1 0: CRC present; 1: no CRC
// profile 2 0: AAC Main; 1: AAC LC (Low Complexity); 2: AAC SSR (Scalable Sample Rate); 3: AAC LTP (Long Term Prediction)
// sampling_frequency_index 4 15 not allowed
// private_bit 1 usually 0
// channel_configuration 3
// original/copy 1 0: original; 1: copy
// home 1 usually 0
// emphasis 2 only if ID == 0 (ie MPEG-4) // not present in some documentation?
// * ADTS Variable Header: these can change from frame to frame
// copyright_identification_bit 1
// copyright_identification_start 1
// aac_frame_length 13 length of the frame including header (in bytes)
// adts_buffer_fullness 11 0x7FF indicates VBR
// no_raw_data_blocks_in_frame 2
// * ADTS Error check
// crc_check 16 only if protection_absent == 0
$byteoffset = $info['avdataoffset'];
$framenumber = 0;
// Init bit pattern array
static $decbin = array();
// Populate $bindec
for ($i = 0; $i < 256; $i++) {
$decbin[chr($i)] = str_pad(decbin($i), 8, '0', STR_PAD_LEFT);
}
// used to calculate bitrate below
$BitrateCache = array();
while (true) {
// breaks out when end-of-file encountered, or invalid data found,
// or MaxFramesToScan frames have been scanned
if (!GetId3_Lib_Helper::intValueSupported($byteoffset)) {
$info['warning'][] = 'Unable to parse AAC file beyond ' . ftell($this->getid3->fp) . ' (PHP does not support file operations beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB)';
return false;
}
fseek($this->getid3->fp, $byteoffset, SEEK_SET);
// First get substring
$substring = fread($this->getid3->fp, 9);
// header is 7 bytes (or 9 if CRC is present)
$substringlength = strlen($substring);
if ($substringlength != 9) {
$info['error'][] = 'Failed to read 7 bytes at offset ' . (ftell($this->getid3->fp) - $substringlength) . ' (only read ' . $substringlength . ' bytes)';
return false;
}
// this would be easier with 64-bit math, but split it up to allow for 32-bit:
$header1 = GetId3_Lib_Helper::BigEndian2Int(substr($substring, 0, 2));
$header2 = GetId3_Lib_Helper::BigEndian2Int(substr($substring, 2, 4));
$header3 = GetId3_Lib_Helper::BigEndian2Int(substr($substring, 6, 1));
$info['aac']['header']['raw']['syncword'] = ($header1 & 0xfff0) >> 4;
if ($info['aac']['header']['raw']['syncword'] != 0xfff) {
$info['error'][] = 'Synch pattern (0x0FFF) not found at offset ' . (ftell($this->getid3->fp) - $substringlength) . ' (found 0x0' . strtoupper(dechex($info['aac']['header']['raw']['syncword'])) . ' instead)';
//if ($info['fileformat'] == 'aac') {
// return true;
//}
unset($info['aac']);
return false;
}
// Gather info for first frame only - this takes time to do 1000 times!
if ($framenumber == 0) {
$info['aac']['header_type'] = 'ADTS';
$info['fileformat'] = 'aac';
$info['audio']['dataformat'] = 'aac';
$info['aac']['header']['raw']['mpeg_version'] = ($header1 & 0x8) >> 3;
$info['aac']['header']['raw']['mpeg_layer'] = ($header1 & 0x6) >> 1;
$info['aac']['header']['raw']['protection_absent'] = ($header1 & 0x1) >> 0;
$info['aac']['header']['raw']['profile_code'] = ($header2 & 0xc0000000) >> 30;
$info['aac']['header']['raw']['sample_rate_code'] = ($header2 & 0x3c000000) >> 26;
$info['aac']['header']['raw']['private_stream'] = ($header2 & 0x2000000) >> 25;
$info['aac']['header']['raw']['channels_code'] = ($header2 & 0x1c00000) >> 22;
$info['aac']['header']['raw']['original'] = ($header2 & 0x200000) >> 21;
$info['aac']['header']['raw']['home'] = ($header2 & 0x100000) >> 20;
$info['aac']['header']['raw']['copyright_stream'] = ($header2 & 0x80000) >> 19;
$info['aac']['header']['raw']['copyright_start'] = ($header2 & 0x40000) >> 18;
$info['aac']['header']['raw']['frame_length'] = ($header2 & 0x3ffe0) >> 5;
$info['aac']['header']['mpeg_version'] = $info['aac']['header']['raw']['mpeg_version'] ? 2 : 4;
$info['aac']['header']['crc_present'] = $info['aac']['header']['raw']['protection_absent'] ? false : true;
$info['aac']['header']['profile'] = self::AACprofileLookup($info['aac']['header']['raw']['profile_code'], $info['aac']['header']['mpeg_version']);
$info['aac']['header']['sample_frequency'] = self::AACsampleRateLookup($info['aac']['header']['raw']['sample_rate_code']);
$info['aac']['header']['private'] = (bool) $info['aac']['header']['raw']['private_stream'];
$info['aac']['header']['original'] = (bool) $info['aac']['header']['raw']['original'];
$info['aac']['header']['home'] = (bool) $info['aac']['header']['raw']['home'];
$info['aac']['header']['channels'] = $info['aac']['header']['raw']['channels_code'] == 7 ? 8 : $info['aac']['header']['raw']['channels_code'];
if ($ReturnExtendedInfo) {
$info['aac'][$framenumber]['copyright_id_bit'] = (bool) $info['aac']['header']['raw']['copyright_stream'];
$info['aac'][$framenumber]['copyright_id_start'] = (bool) $info['aac']['header']['raw']['copyright_start'];
}
if ($info['aac']['header']['raw']['mpeg_layer'] != 0) {
$info['warning'][] = 'Layer error - expected "0", found "' . $info['aac']['header']['raw']['mpeg_layer'] . '" instead';
}
if ($info['aac']['header']['sample_frequency'] == 0) {
$info['error'][] = 'Corrupt AAC file: sample_frequency == zero';
return false;
}
$info['audio']['sample_rate'] = $info['aac']['header']['sample_frequency'];
$info['audio']['channels'] = $info['aac']['header']['channels'];
}
$FrameLength = ($header2 & 0x3ffe0) >> 5;
if (!isset($BitrateCache[$FrameLength])) {
$BitrateCache[$FrameLength] = $info['aac']['header']['sample_frequency'] / 1024 * $FrameLength * 8;
}
GetId3_Lib_Helper::safe_inc($info['aac']['bitrate_distribution'][$BitrateCache[$FrameLength]], 1);
$info['aac'][$framenumber]['aac_frame_length'] = $FrameLength;
$info['aac'][$framenumber]['adts_buffer_fullness'] = ($header2 & 0x1f) << 6 & ($header3 & 0xfc) >> 2;
if ($info['aac'][$framenumber]['adts_buffer_fullness'] == 0x7ff) {
$info['audio']['bitrate_mode'] = 'vbr';
} else {
$info['audio']['bitrate_mode'] = 'cbr';
}
$info['aac'][$framenumber]['num_raw_data_blocks'] = ($header3 & 0x3) >> 0;
if ($info['aac']['header']['crc_present']) {
//$info['aac'][$framenumber]['crc'] = GetId3_lib::BigEndian2Int(substr($substring, 7, 2);
}
if (!$ReturnExtendedInfo) {
unset($info['aac'][$framenumber]);
}
/*
$rounded_precision = 5000;
$info['aac']['bitrate_distribution_rounded'] = array();
foreach ($info['aac']['bitrate_distribution'] as $bitrate => $count) {
$rounded_bitrate = round($bitrate / $rounded_precision) * $rounded_precision;
getid3_lib::safe_inc($info['aac']['bitrate_distribution_rounded'][$rounded_bitrate], $count);
}
ksort($info['aac']['bitrate_distribution_rounded']);
*/
$byteoffset += $FrameLength;
if (++$framenumber < $MaxFramesToScan && $byteoffset + 10 < $info['avdataend']) {
// keep scanning
} else {
$info['aac']['frames'] = $framenumber;
$info['playtime_seconds'] = $info['avdataend'] / $byteoffset * ($framenumber * 1024 / $info['aac']['header']['sample_frequency']);
// (1 / % of file scanned) * (samples / (samples/sec)) = seconds
if ($info['playtime_seconds'] == 0) {
$info['error'][] = 'Corrupt AAC file: playtime_seconds == zero';
return false;
}
$info['audio']['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['playtime_seconds'];
ksort($info['aac']['bitrate_distribution']);
$info['audio']['encoder_options'] = $info['aac']['header_type'] . ' ' . $info['aac']['header']['profile'];
return true;
}
}
// should never get here.
}
/**
*
* @return boolean
*/
public function ZIPparseEndOfCentralDirectory()
{
$EndOfCentralDirectory['offset'] = ftell($this->getid3->fp);
$ZIPendOfCentralDirectory = fread($this->getid3->fp, 22);
$EndOfCentralDirectory['signature'] = GetId3_Lib_Helper::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 0, 4));
if ($EndOfCentralDirectory['signature'] != 0x6054b50) {
// invalid End Of Central Directory Signature
fseek($this->getid3->fp, $EndOfCentralDirectory['offset'], SEEK_SET);
// seek back to where filepointer originally was so it can be handled properly
return false;
}
$EndOfCentralDirectory['disk_number_current'] = GetId3_Lib_Helper::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 4, 2));
$EndOfCentralDirectory['disk_number_start_directory'] = GetId3_Lib_Helper::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 6, 2));
$EndOfCentralDirectory['directory_entries_this_disk'] = GetId3_Lib_Helper::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 8, 2));
$EndOfCentralDirectory['directory_entries_total'] = GetId3_Lib_Helper::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 10, 2));
$EndOfCentralDirectory['directory_size'] = GetId3_Lib_Helper::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 12, 4));
$EndOfCentralDirectory['directory_offset'] = GetId3_Lib_Helper::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 16, 4));
$EndOfCentralDirectory['comment_length'] = GetId3_Lib_Helper::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 20, 2));
if ($EndOfCentralDirectory['comment_length'] > 0) {
$EndOfCentralDirectory['comment'] = fread($this->getid3->fp, $EndOfCentralDirectory['comment_length']);
}
return $EndOfCentralDirectory;
}
/**
*
* @param type $items
* @param type $isheader
* @return type
*/
public function GenerateAPEtagHeaderFooter(&$items, $isheader = false)
{
$tagdatalength = 0;
foreach ($items as $itemdata) {
$tagdatalength += strlen($itemdata);
}
$APEheader = 'APETAGEX';
$APEheader .= GetId3_Lib_Helper::LittleEndian2String(2000, 4);
$APEheader .= GetId3_Lib_Helper::LittleEndian2String(32 + $tagdatalength, 4);
$APEheader .= GetId3_Lib_Helper::LittleEndian2String(count($items), 4);
$APEheader .= $this->GenerateAPEtagFlags(true, true, $isheader, 0, false);
$APEheader .= str_repeat("", 8);
return $APEheader;
}
/**
*
* @return boolean
*/
public function CalculateReplayGain()
{
if (isset($this->info['replay_gain'])) {
if (!isset($this->info['replay_gain']['reference_volume'])) {
$this->info['replay_gain']['reference_volume'] = (double) 89.0;
}
if (isset($this->info['replay_gain']['track']['adjustment'])) {
$this->info['replay_gain']['track']['volume'] = $this->info['replay_gain']['reference_volume'] - $this->info['replay_gain']['track']['adjustment'];
}
if (isset($this->info['replay_gain']['album']['adjustment'])) {
$this->info['replay_gain']['album']['volume'] = $this->info['replay_gain']['reference_volume'] - $this->info['replay_gain']['album']['adjustment'];
}
if (isset($this->info['replay_gain']['track']['peak'])) {
$this->info['replay_gain']['track']['max_noclip_gain'] = 0 - GetId3_Lib_Helper::RGADamplitude2dB($this->info['replay_gain']['track']['peak']);
}
if (isset($this->info['replay_gain']['album']['peak'])) {
$this->info['replay_gain']['album']['max_noclip_gain'] = 0 - GetId3_Lib_Helper::RGADamplitude2dB($this->info['replay_gain']['album']['peak']);
}
}
return true;
}
/**
*
* @param type $byteword
* @param type $signed
* @return type
*/
public function EitherEndian2Int($byteword, $signed = false)
{
if ($this->getid3->info['fileformat'] == 'riff') {
return GetId3_Lib_Helper::LittleEndian2Int($byteword, $signed);
}
return GetId3_Lib_Helper::BigEndian2Int($byteword, false, $signed);
}
/**
*
* @param type $EBMLstring
* @return type
* @link http://matroska.org/specs/
*/
private static function EBML2Int($EBMLstring)
{
// Element ID coded with an UTF-8 like system:
// 1xxx xxxx - Class A IDs (2^7 -2 possible values) (base 0x8X)
// 01xx xxxx xxxx xxxx - Class B IDs (2^14-2 possible values) (base 0x4X 0xXX)
// 001x xxxx xxxx xxxx xxxx xxxx - Class C IDs (2^21-2 possible values) (base 0x2X 0xXX 0xXX)
// 0001 xxxx xxxx xxxx xxxx xxxx xxxx xxxx - Class D IDs (2^28-2 possible values) (base 0x1X 0xXX 0xXX 0xXX)
// Values with all x at 0 and 1 are reserved (hence the -2).
// Data size, in octets, is also coded with an UTF-8 like system :
// 1xxx xxxx - value 0 to 2^7-2
// 01xx xxxx xxxx xxxx - value 0 to 2^14-2
// 001x xxxx xxxx xxxx xxxx xxxx - value 0 to 2^21-2
// 0001 xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^28-2
// 0000 1xxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^35-2
// 0000 01xx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^42-2
// 0000 001x xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^49-2
// 0000 0001 xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^56-2
$first_byte_int = ord($EBMLstring[0]);
if (0x80 & $first_byte_int) {
$EBMLstring[0] = chr($first_byte_int & 0x7f);
} elseif (0x40 & $first_byte_int) {
$EBMLstring[0] = chr($first_byte_int & 0x3f);
} elseif (0x20 & $first_byte_int) {
$EBMLstring[0] = chr($first_byte_int & 0x1f);
} elseif (0x10 & $first_byte_int) {
$EBMLstring[0] = chr($first_byte_int & 0xf);
} elseif (0x8 & $first_byte_int) {
$EBMLstring[0] = chr($first_byte_int & 0x7);
} elseif (0x4 & $first_byte_int) {
$EBMLstring[0] = chr($first_byte_int & 0x3);
} elseif (0x2 & $first_byte_int) {
$EBMLstring[0] = chr($first_byte_int & 0x1);
} elseif (0x1 & $first_byte_int) {
$EBMLstring[0] = chr($first_byte_int & 0x0);
}
return GetId3_Lib_Helper::BigEndian2Int($EBMLstring);
}
/**
*
* @return type
*/
public function readDouble()
{
return GetId3_Lib_Helper::BigEndian2Float($this->read(8));
}
/**
*
* @param type $endoffset
* @param type $version
* @param type $length
* @return boolean
* @link http://www.volweb.cz/str/tags.htm
*/
public function getLyrics3Data($endoffset, $version, $length)
{
$info =& $this->getid3->info;
if (!GetId3_Lib_Helper::intValueSupported($endoffset)) {
$info['warning'][] = 'Unable to check for Lyrics3 because file is larger than ' . round(PHP_INT_MAX / 1073741824) . 'GB';
return false;
}
fseek($this->getid3->fp, $endoffset, SEEK_SET);
if ($length <= 0) {
return false;
}
$rawdata = fread($this->getid3->fp, $length);
$ParsedLyrics3['raw']['lyrics3version'] = $version;
$ParsedLyrics3['raw']['lyrics3tagsize'] = $length;
$ParsedLyrics3['tag_offset_start'] = $endoffset;
$ParsedLyrics3['tag_offset_end'] = $endoffset + $length - 1;
if (substr($rawdata, 0, 11) != 'LYRICSBEGIN') {
if (strpos($rawdata, 'LYRICSBEGIN') !== false) {
$info['warning'][] = '"LYRICSBEGIN" expected at ' . $endoffset . ' but actually found at ' . ($endoffset + strpos($rawdata, 'LYRICSBEGIN')) . ' - this is invalid for Lyrics3 v' . $version;
$info['avdataend'] = $endoffset + strpos($rawdata, 'LYRICSBEGIN');
$rawdata = substr($rawdata, strpos($rawdata, 'LYRICSBEGIN'));
$length = strlen($rawdata);
$ParsedLyrics3['tag_offset_start'] = $info['avdataend'];
$ParsedLyrics3['raw']['lyrics3tagsize'] = $length;
} else {
$info['error'][] = '"LYRICSBEGIN" expected at ' . $endoffset . ' but found "' . substr($rawdata, 0, 11) . '" instead';
return false;
}
}
switch ($version) {
case 1:
if (substr($rawdata, strlen($rawdata) - 9, 9) == 'LYRICSEND') {
$ParsedLyrics3['raw']['LYR'] = trim(substr($rawdata, 11, strlen($rawdata) - 11 - 9));
$this->Lyrics3LyricsTimestampParse($ParsedLyrics3);
} else {
$info['error'][] = '"LYRICSEND" expected at ' . (ftell($this->getid3->fp) - 11 + $length - 9) . ' but found "' . substr($rawdata, strlen($rawdata) - 9, 9) . '" instead';
return false;
}
break;
case 2:
if (substr($rawdata, strlen($rawdata) - 9, 9) == 'LYRICS200') {
$ParsedLyrics3['raw']['unparsed'] = substr($rawdata, 11, strlen($rawdata) - 11 - 9 - 6);
// LYRICSBEGIN + LYRICS200 + LSZ
$rawdata = $ParsedLyrics3['raw']['unparsed'];
while (strlen($rawdata) > 0) {
$fieldname = substr($rawdata, 0, 3);
$fieldsize = (int) substr($rawdata, 3, 5);
$ParsedLyrics3['raw'][$fieldname] = substr($rawdata, 8, $fieldsize);
$rawdata = substr($rawdata, 3 + 5 + $fieldsize);
}
if (isset($ParsedLyrics3['raw']['IND'])) {
$i = 0;
$flagnames = array('lyrics', 'timestamps', 'inhibitrandom');
foreach ($flagnames as $flagname) {
if (strlen($ParsedLyrics3['raw']['IND']) > $i++) {
$ParsedLyrics3['flags'][$flagname] = $this->IntString2Bool(substr($ParsedLyrics3['raw']['IND'], $i, 1 - 1));
}
}
}
$fieldnametranslation = array('ETT' => 'title', 'EAR' => 'artist', 'EAL' => 'album', 'INF' => 'comment', 'AUT' => 'author');
foreach ($fieldnametranslation as $key => $value) {
if (isset($ParsedLyrics3['raw'][$key])) {
$ParsedLyrics3['comments'][$value][] = trim($ParsedLyrics3['raw'][$key]);
}
}
if (isset($ParsedLyrics3['raw']['IMG'])) {
$imagestrings = explode("\r\n", $ParsedLyrics3['raw']['IMG']);
foreach ($imagestrings as $key => $imagestring) {
if (strpos($imagestring, '||') !== false) {
$imagearray = explode('||', $imagestring);
$ParsedLyrics3['images'][$key]['filename'] = isset($imagearray[0]) ? $imagearray[0] : '';
$ParsedLyrics3['images'][$key]['description'] = isset($imagearray[1]) ? $imagearray[1] : '';
$ParsedLyrics3['images'][$key]['timestamp'] = $this->Lyrics3Timestamp2Seconds(isset($imagearray[2]) ? $imagearray[2] : '');
}
}
}
if (isset($ParsedLyrics3['raw']['LYR'])) {
$this->Lyrics3LyricsTimestampParse($ParsedLyrics3);
}
} else {
$info['error'][] = '"LYRICS200" expected at ' . (ftell($this->getid3->fp) - 11 + $length - 9) . ' but found "' . substr($rawdata, strlen($rawdata) - 9, 9) . '" instead';
return false;
}
break;
default:
$info['error'][] = 'Cannot process Lyrics3 version ' . $version . ' (only v1 and v2)';
return false;
break;
}
if (isset($info['id3v1']['tag_offset_start']) && $info['id3v1']['tag_offset_start'] <= $ParsedLyrics3['tag_offset_end']) {
$info['warning'][] = 'ID3v1 tag information ignored since it appears to be a false synch in Lyrics3 tag data';
unset($info['id3v1']);
foreach ($info['warning'] as $key => $value) {
if ($value == 'Some ID3v1 fields do not use NULL characters for padding') {
unset($info['warning'][$key]);
sort($info['warning']);
break;
}
}
}
$info['lyrics3'] = $ParsedLyrics3;
return true;
}
/**
*
* @param type $bytestring
* @param type $byteorder
* @return boolean
*/
public function TIFFendian2Int($bytestring, $byteorder)
{
if ($byteorder == 'Intel') {
return GetId3_Lib_Helper::LittleEndian2Int($bytestring);
} elseif ($byteorder == 'Motorola') {
return GetId3_Lib_Helper::BigEndian2Int($bytestring);
}
return false;
}
/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
$info['fileformat'] = 'tar';
$info['tar']['files'] = array();
$unpack_header = 'a100fname/a8mode/a8uid/a8gid/a12size/a12mtime/a8chksum/a1typflag/a100lnkname/a6magic/a2ver/a32uname/a32gname/a8devmaj/a8devmin/a155prefix';
$null_512k = str_repeat("", 512);
// end-of-file marker
fseek($this->getid3->fp, 0);
while (!feof($this->getid3->fp)) {
$buffer = fread($this->getid3->fp, 512);
if (strlen($buffer) < 512) {
break;
}
// check the block
$checksum = 0;
for ($i = 0; $i < 148; $i++) {
$checksum += ord($buffer[$i]);
}
for ($i = 148; $i < 156; $i++) {
$checksum += ord(' ');
}
for ($i = 156; $i < 512; $i++) {
$checksum += ord($buffer[$i]);
}
$attr = unpack($unpack_header, $buffer);
$name = isset($attr['fname']) ? trim($attr['fname']) : '';
$mode = octdec(isset($attr['mode']) ? trim($attr['mode']) : '');
$uid = octdec(isset($attr['uid']) ? trim($attr['uid']) : '');
$gid = octdec(isset($attr['gid']) ? trim($attr['gid']) : '');
$size = octdec(isset($attr['size']) ? trim($attr['size']) : '');
$mtime = octdec(isset($attr['mtime']) ? trim($attr['mtime']) : '');
$chksum = octdec(isset($attr['chksum']) ? trim($attr['chksum']) : '');
$typflag = isset($attr['typflag']) ? trim($attr['typflag']) : '';
$lnkname = isset($attr['lnkname']) ? trim($attr['lnkname']) : '';
$magic = isset($attr['magic']) ? trim($attr['magic']) : '';
$ver = isset($attr['ver']) ? trim($attr['ver']) : '';
$uname = isset($attr['uname']) ? trim($attr['uname']) : '';
$gname = isset($attr['gname']) ? trim($attr['gname']) : '';
$devmaj = octdec(isset($attr['devmaj']) ? trim($attr['devmaj']) : '');
$devmin = octdec(isset($attr['devmin']) ? trim($attr['devmin']) : '');
$prefix = isset($attr['prefix']) ? trim($attr['prefix']) : '';
if ($checksum == 256 && $chksum == 0) {
// EOF Found
break;
}
if ($prefix) {
$name = $prefix . '/' . $name;
}
if (preg_match('#/$#', $name) && !$name) {
$typeflag = 5;
}
if ($buffer == $null_512k) {
// it's the end of the tar-file...
break;
}
// Read to the next chunk
fseek($this->getid3->fp, $size, SEEK_CUR);
$diff = $size % 512;
if ($diff != 0) {
// Padding, throw away
fseek($this->getid3->fp, 512 - $diff, SEEK_CUR);
}
// Protect against tar-files with garbage at the end
if ($name == '') {
break;
}
$info['tar']['file_details'][$name] = array('name' => $name, 'mode_raw' => $mode, 'mode' => self::display_perms($mode), 'uid' => $uid, 'gid' => $gid, 'size' => $size, 'mtime' => $mtime, 'chksum' => $chksum, 'typeflag' => self::get_flag_type($typflag), 'linkname' => $lnkname, 'magic' => $magic, 'version' => $ver, 'uname' => $uname, 'gname' => $gname, 'devmajor' => $devmaj, 'devminor' => $devmin);
$info['tar']['files'] = GetId3_Lib_Helper::array_merge_clobber($info['tar']['files'], GetId3_Lib_Helper::CreateDeepArray($info['tar']['file_details'][$name]['name'], '/', $size));
}
return true;
}
/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
$info['fileformat'] = 'swf';
$info['video']['dataformat'] = 'swf';
// http://www.openswf.org/spec/SWFfileformat.html
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$SWFfileData = fread($this->getid3->fp, $info['avdataend'] - $info['avdataoffset']);
// 8 + 2 + 2 + max(9) bytes NOT including Frame_Size RECT data
$info['swf']['header']['signature'] = substr($SWFfileData, 0, 3);
switch ($info['swf']['header']['signature']) {
case 'FWS':
$info['swf']['header']['compressed'] = false;
break;
case 'CWS':
$info['swf']['header']['compressed'] = true;
break;
default:
$info['error'][] = 'Expecting "FWS" or "CWS" at offset ' . $info['avdataoffset'] . ', found "' . GetId3_Lib_Helper::PrintHexBytes($info['swf']['header']['signature']) . '"';
unset($info['swf']);
unset($info['fileformat']);
return false;
break;
}
$info['swf']['header']['version'] = GetId3_Lib_Helper::LittleEndian2Int(substr($SWFfileData, 3, 1));
$info['swf']['header']['length'] = GetId3_Lib_Helper::LittleEndian2Int(substr($SWFfileData, 4, 4));
if ($info['swf']['header']['compressed']) {
$SWFHead = substr($SWFfileData, 0, 8);
$SWFfileData = substr($SWFfileData, 8);
if ($decompressed = @gzuncompress($SWFfileData)) {
$SWFfileData = $SWFHead . $decompressed;
} else {
$info['error'][] = 'Error decompressing compressed SWF data (' . strlen($SWFfileData) . ' bytes compressed, should be ' . ($info['swf']['header']['length'] - 8) . ' bytes uncompressed)';
return false;
}
}
$FrameSizeBitsPerValue = (ord(substr($SWFfileData, 8, 1)) & 0xf8) >> 3;
$FrameSizeDataLength = ceil((5 + 4 * $FrameSizeBitsPerValue) / 8);
$FrameSizeDataString = str_pad(decbin(ord(substr($SWFfileData, 8, 1)) & 0x7), 3, '0', STR_PAD_LEFT);
for ($i = 1; $i < $FrameSizeDataLength; $i++) {
$FrameSizeDataString .= str_pad(decbin(ord(substr($SWFfileData, 8 + $i, 1))), 8, '0', STR_PAD_LEFT);
}
list($X1, $X2, $Y1, $Y2) = explode("\n", wordwrap($FrameSizeDataString, $FrameSizeBitsPerValue, "\n", 1));
$info['swf']['header']['frame_width'] = GetId3_Lib_Helper::Bin2Dec($X2);
$info['swf']['header']['frame_height'] = GetId3_Lib_Helper::Bin2Dec($Y2);
// http://www-lehre.informatik.uni-osnabrueck.de/~fbstark/diplom/docs/swf/Flash_Uncovered.htm
// Next in the header is the frame rate, which is kind of weird.
// It is supposed to be stored as a 16bit integer, but the first byte
// (or last depending on how you look at it) is completely ignored.
// Example: 0x000C -> 0x0C -> 12 So the frame rate is 12 fps.
// Byte at (8 + $FrameSizeDataLength) is always zero and ignored
$info['swf']['header']['frame_rate'] = GetId3_Lib_Helper::LittleEndian2Int(substr($SWFfileData, 9 + $FrameSizeDataLength, 1));
$info['swf']['header']['frame_count'] = GetId3_Lib_Helper::LittleEndian2Int(substr($SWFfileData, 10 + $FrameSizeDataLength, 2));
$info['video']['frame_rate'] = $info['swf']['header']['frame_rate'];
$info['video']['resolution_x'] = intval(round($info['swf']['header']['frame_width'] / 20));
$info['video']['resolution_y'] = intval(round($info['swf']['header']['frame_height'] / 20));
$info['video']['pixel_aspect_ratio'] = (double) 1;
if ($info['swf']['header']['frame_count'] > 0 && $info['swf']['header']['frame_rate'] > 0) {
$info['playtime_seconds'] = $info['swf']['header']['frame_count'] / $info['swf']['header']['frame_rate'];
}
//echo __LINE__.'='.number_format(microtime(true) - $start_time, 3).'<br>';
// SWF tags
$CurrentOffset = 12 + $FrameSizeDataLength;
$SWFdataLength = strlen($SWFfileData);
while ($CurrentOffset < $SWFdataLength) {
//echo __LINE__.'='.number_format(microtime(true) - $start_time, 3).'<br>';
$TagIDTagLength = GetId3_Lib_Helper::LittleEndian2Int(substr($SWFfileData, $CurrentOffset, 2));
$TagID = ($TagIDTagLength & 0xfffc) >> 6;
$TagLength = $TagIDTagLength & 0x3f;
$CurrentOffset += 2;
if ($TagLength == 0x3f) {
$TagLength = GetId3_Lib_Helper::LittleEndian2Int(substr($SWFfileData, $CurrentOffset, 4));
$CurrentOffset += 4;
}
unset($TagData);
$TagData['offset'] = $CurrentOffset;
$TagData['size'] = $TagLength;
$TagData['id'] = $TagID;
$TagData['data'] = substr($SWFfileData, $CurrentOffset, $TagLength);
switch ($TagID) {
case 0:
// end of movie
break 2;
case 9:
// Set background color
//$info['swf']['tags'][] = $TagData;
$info['swf']['bgcolor'] = strtoupper(str_pad(dechex(GetId3_Lib_Helper::BigEndian2Int($TagData['data'])), 6, '0', STR_PAD_LEFT));
break;
default:
if ($this->ReturnAllTagData) {
$info['swf']['tags'][] = $TagData;
}
break;
}
$CurrentOffset += $TagLength;
}
return true;
}
/**
*
* @return boolean
*/
public function Analyze()
{
$info =& $this->getid3->info;
$OriginalAVdataOffset = $info['avdataoffset'];
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$VOCheader = fread($this->getid3->fp, 26);
$magic = 'Creative Voice File';
if (substr($VOCheader, 0, 19) != $magic) {
$info['error'][] = 'Expecting "' . GetId3_Lib_Helper::PrintHexBytes($magic) . '" at offset ' . $info['avdataoffset'] . ', found "' . GetId3_Lib_Helper::PrintHexBytes(substr($VOCheader, 0, 19)) . '"';
return false;
}
// shortcuts
$thisfile_audio =& $info['audio'];
$info['voc'] = array();
$thisfile_voc =& $info['voc'];
$info['fileformat'] = 'voc';
$thisfile_audio['dataformat'] = 'voc';
$thisfile_audio['bitrate_mode'] = 'cbr';
$thisfile_audio['lossless'] = true;
$thisfile_audio['channels'] = 1;
// might be overriden below
$thisfile_audio['bits_per_sample'] = 8;
// might be overriden below
// byte # Description
// ------ ------------------------------------------
// 00-12 'Creative Voice File'
// 13 1A (eof to abort printing of file)
// 14-15 Offset of first datablock in .voc file (std 1A 00 in Intel Notation)
// 16-17 Version number (minor,major) (VOC-HDR puts 0A 01)
// 18-19 2's Comp of Ver. # + 1234h (VOC-HDR puts 29 11)
$thisfile_voc['header']['datablock_offset'] = GetId3_Lib_Helper::LittleEndian2Int(substr($VOCheader, 20, 2));
$thisfile_voc['header']['minor_version'] = GetId3_Lib_Helper::LittleEndian2Int(substr($VOCheader, 22, 1));
$thisfile_voc['header']['major_version'] = GetId3_Lib_Helper::LittleEndian2Int(substr($VOCheader, 23, 1));
do {
$BlockOffset = ftell($this->getid3->fp);
$BlockData = fread($this->getid3->fp, 4);
$BlockType = ord($BlockData[0]);
$BlockSize = GetId3_Lib_Helper::LittleEndian2Int(substr($BlockData, 1, 3));
$ThisBlock = array();
GetId3_Lib_Helper::safe_inc($thisfile_voc['blocktypes'][$BlockType], 1);
switch ($BlockType) {
case 0:
// Terminator
// do nothing, we'll break out of the loop down below
break;
case 1:
// Sound data
$BlockData .= fread($this->getid3->fp, 2);
if ($info['avdataoffset'] <= $OriginalAVdataOffset) {
$info['avdataoffset'] = ftell($this->getid3->fp);
}
fseek($this->getid3->fp, $BlockSize - 2, SEEK_CUR);
$ThisBlock['sample_rate_id'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BlockData, 4, 1));
$ThisBlock['compression_type'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BlockData, 5, 1));
$ThisBlock['compression_name'] = $this->VOCcompressionTypeLookup($ThisBlock['compression_type']);
if ($ThisBlock['compression_type'] <= 3) {
$thisfile_voc['compressed_bits_per_sample'] = GetId3_Lib_Helper::CastAsInt(str_replace('-bit', '', $ThisBlock['compression_name']));
}
// Less accurate sample_rate calculation than the Extended block (#8) data (but better than nothing if Extended Block is not available)
if (empty($thisfile_audio['sample_rate'])) {
// SR byte = 256 - (1000000 / sample_rate)
$thisfile_audio['sample_rate'] = GetId3_Lib_Helper::trunc(1000000 / (256 - $ThisBlock['sample_rate_id']) / $thisfile_audio['channels']);
}
break;
case 2:
// Sound continue
// Sound continue
case 3:
// Silence
// Silence
case 4:
// Marker
// Marker
case 6:
// Repeat
// Repeat
case 7:
// End repeat
// nothing useful, just skip
fseek($this->getid3->fp, $BlockSize, SEEK_CUR);
break;
case 8:
// Extended
$BlockData .= fread($this->getid3->fp, 4);
//00-01 Time Constant:
// Mono: 65536 - (256000000 / sample_rate)
// Stereo: 65536 - (256000000 / (sample_rate * 2))
$ThisBlock['time_constant'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BlockData, 4, 2));
$ThisBlock['pack_method'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BlockData, 6, 1));
$ThisBlock['stereo'] = (bool) GetId3_Lib_Helper::LittleEndian2Int(substr($BlockData, 7, 1));
$thisfile_audio['channels'] = $ThisBlock['stereo'] ? 2 : 1;
$thisfile_audio['sample_rate'] = GetId3_Lib_Helper::trunc(256000000 / (65536 - $ThisBlock['time_constant']) / $thisfile_audio['channels']);
break;
case 9:
// data block that supersedes blocks 1 and 8. Used for stereo, 16 bit
$BlockData .= fread($this->getid3->fp, 12);
if ($info['avdataoffset'] <= $OriginalAVdataOffset) {
$info['avdataoffset'] = ftell($this->getid3->fp);
}
fseek($this->getid3->fp, $BlockSize - 12, SEEK_CUR);
$ThisBlock['sample_rate'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BlockData, 4, 4));
$ThisBlock['bits_per_sample'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BlockData, 8, 1));
$ThisBlock['channels'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BlockData, 9, 1));
$ThisBlock['wFormat'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BlockData, 10, 2));
$ThisBlock['compression_name'] = $this->VOCwFormatLookup($ThisBlock['wFormat']);
if ($this->VOCwFormatActualBitsPerSampleLookup($ThisBlock['wFormat'])) {
$thisfile_voc['compressed_bits_per_sample'] = $this->VOCwFormatActualBitsPerSampleLookup($ThisBlock['wFormat']);
}
$thisfile_audio['sample_rate'] = $ThisBlock['sample_rate'];
$thisfile_audio['bits_per_sample'] = $ThisBlock['bits_per_sample'];
$thisfile_audio['channels'] = $ThisBlock['channels'];
break;
default:
$info['warning'][] = 'Unhandled block type "' . $BlockType . '" at offset ' . $BlockOffset;
fseek($this->getid3->fp, $BlockSize, SEEK_CUR);
break;
}
if (!empty($ThisBlock)) {
$ThisBlock['block_offset'] = $BlockOffset;
$ThisBlock['block_size'] = $BlockSize;
$ThisBlock['block_type_id'] = $BlockType;
$thisfile_voc['blocks'][] = $ThisBlock;
}
} while (!feof($this->getid3->fp) && $BlockType != 0);
// Terminator block doesn't have size field, so seek back 3 spaces
fseek($this->getid3->fp, -3, SEEK_CUR);
ksort($thisfile_voc['blocktypes']);
if (!empty($thisfile_voc['compressed_bits_per_sample'])) {
$info['playtime_seconds'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / ($thisfile_voc['compressed_bits_per_sample'] * $thisfile_audio['channels'] * $thisfile_audio['sample_rate']);
$thisfile_audio['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['playtime_seconds'];
}
return true;
}
/**
*
* @param type $compre
* @return type
*/
public static function heavyCompression($compre)
{
// The first four bits indicate gain changes in 6.02dB increments which can be
// implemented with an arithmetic shift operation. The following four bits
// indicate linear gain changes, and require a 5-bit multiply.
// We will represent the two 4-bit fields of compr as follows:
// X0 X1 X2 X3 . Y4 Y5 Y6 Y7
// The meaning of the X values is most simply described by considering X to represent a 4-bit
// signed integer with values from –8 to +7. The gain indicated by X is then (X + 1) * 6.02 dB. The
// following table shows this in detail.
// Meaning of 4 msb of compr
// 7 +48.16 dB
// 6 +42.14 dB
// 5 +36.12 dB
// 4 +30.10 dB
// 3 +24.08 dB
// 2 +18.06 dB
// 1 +12.04 dB
// 0 +6.02 dB
// -1 0 dB
// -2 –6.02 dB
// -3 –12.04 dB
// -4 –18.06 dB
// -5 –24.08 dB
// -6 –30.10 dB
// -7 –36.12 dB
// -8 –42.14 dB
$fourbit = str_pad(decbin(($compre & 0xf0) >> 4), 4, '0', STR_PAD_LEFT);
if ($fourbit[0] == '1') {
$log_gain = -8 + bindec(substr($fourbit, 1));
} else {
$log_gain = bindec(substr($fourbit, 1));
}
$log_gain = ($log_gain + 1) * GetId3_Lib_Helper::RGADamplitude2dB(2);
// The value of Y is a linear representation of a gain change of up to –6 dB. Y is considered to
// be an unsigned fractional integer, with a leading value of 1, or: 0.1 Y4 Y5 Y6 Y7 (base 2). Y can
// represent values between 0.111112 (or 31/32) and 0.100002 (or 1/2). Thus, Y can represent gain
// changes from –0.28 dB to –6.02 dB.
$lin_gain = (16 + ($compre & 0xf)) / 32;
// The combination of X and Y values allows compr to indicate gain changes from
// 48.16 – 0.28 = +47.89 dB, to
// –42.14 – 6.02 = –48.16 dB.
return $log_gain - $lin_gain;
}
/**
*
* @param type $BonkTagName
*/
public function HandleBonkTags($BonkTagName)
{
$info =& $this->getid3->info;
switch ($BonkTagName) {
case 'BONK':
// shortcut
$thisfile_bonk_BONK =& $info['bonk']['BONK'];
$BonkData = "" . 'BONK' . fread($this->getid3->fp, 17);
$thisfile_bonk_BONK['version'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BonkData, 5, 1));
$thisfile_bonk_BONK['number_samples'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BonkData, 6, 4));
$thisfile_bonk_BONK['sample_rate'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BonkData, 10, 4));
$thisfile_bonk_BONK['channels'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BonkData, 14, 1));
$thisfile_bonk_BONK['lossless'] = (bool) GetId3_Lib_Helper::LittleEndian2Int(substr($BonkData, 15, 1));
$thisfile_bonk_BONK['joint_stereo'] = (bool) GetId3_Lib_Helper::LittleEndian2Int(substr($BonkData, 16, 1));
$thisfile_bonk_BONK['number_taps'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BonkData, 17, 2));
$thisfile_bonk_BONK['downsampling_ratio'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BonkData, 19, 1));
$thisfile_bonk_BONK['samples_per_packet'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BonkData, 20, 2));
$info['avdataoffset'] = $thisfile_bonk_BONK['offset'] + 5 + 17;
$info['avdataend'] = $thisfile_bonk_BONK['offset'] + $thisfile_bonk_BONK['size'];
$info['fileformat'] = 'bonk';
$info['audio']['dataformat'] = 'bonk';
$info['audio']['bitrate_mode'] = 'vbr';
// assumed
$info['audio']['channels'] = $thisfile_bonk_BONK['channels'];
$info['audio']['sample_rate'] = $thisfile_bonk_BONK['sample_rate'];
$info['audio']['channelmode'] = $thisfile_bonk_BONK['joint_stereo'] ? 'joint stereo' : 'stereo';
$info['audio']['lossless'] = $thisfile_bonk_BONK['lossless'];
$info['audio']['codec'] = 'bonk';
$info['playtime_seconds'] = $thisfile_bonk_BONK['number_samples'] / ($thisfile_bonk_BONK['sample_rate'] * $thisfile_bonk_BONK['channels']);
if ($info['playtime_seconds'] > 0) {
$info['audio']['bitrate'] = ($info['bonk']['dataend'] - $info['bonk']['dataoffset']) * 8 / $info['playtime_seconds'];
}
break;
case 'INFO':
// shortcut
$thisfile_bonk_INFO =& $info['bonk']['INFO'];
$thisfile_bonk_INFO['version'] = GetId3_Lib_Helper::LittleEndian2Int(fread($this->getid3->fp, 1));
$thisfile_bonk_INFO['entries_count'] = 0;
$NextInfoDataPair = fread($this->getid3->fp, 5);
if (!$this->BonkIsValidTagName(substr($NextInfoDataPair, 1, 4))) {
while (!feof($this->getid3->fp)) {
//$CurrentSeekInfo['offset'] = GetId3_lib::LittleEndian2Int(substr($NextInfoDataPair, 0, 4));
//$CurrentSeekInfo['nextbit'] = GetId3_lib::LittleEndian2Int(substr($NextInfoDataPair, 4, 1));
//$thisfile_bonk_INFO[] = $CurrentSeekInfo;
$NextInfoDataPair = fread($this->getid3->fp, 5);
if ($this->BonkIsValidTagName(substr($NextInfoDataPair, 1, 4))) {
fseek($this->getid3->fp, -5, SEEK_CUR);
break;
}
$thisfile_bonk_INFO['entries_count']++;
}
}
break;
case 'META':
$BonkData = "" . 'META' . fread($this->getid3->fp, $info['bonk']['META']['size'] - 5);
$info['bonk']['META']['version'] = GetId3_Lib_Helper::LittleEndian2Int(substr($BonkData, 5, 1));
$MetaTagEntries = floor((strlen($BonkData) - 8 - 6) / 8);
// BonkData - xxxxmeta - ØMETA
$offset = 6;
for ($i = 0; $i < $MetaTagEntries; $i++) {
$MetaEntryTagName = substr($BonkData, $offset, 4);
$offset += 4;
$MetaEntryTagOffset = GetId3_Lib_Helper::LittleEndian2Int(substr($BonkData, $offset, 4));
$offset += 4;
$info['bonk']['META']['tags'][$MetaEntryTagName] = $MetaEntryTagOffset;
}
break;
case ' ID3':
$info['audio']['encoder'] = 'Extended BONK v0.9+';
// ID3v2 checking is optional
if (class_exists('GetId3_Module_Tag_Id3v2')) {
$getid3_temp = new GetId3_GetId3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_id3v2 = new GetId3_Module_Tag_Id3v2($getid3_temp);
$getid3_id3v2->StartingOffset = $info['bonk'][' ID3']['offset'] + 2;
$info['bonk'][' ID3']['valid'] = $getid3_id3v2->Analyze();
if ($info['bonk'][' ID3']['valid']) {
$info['id3v2'] = $getid3_temp->info['id3v2'];
}
unset($getid3_temp, $getid3_id3v2);
}
break;
default:
$info['warning'][] = 'Unexpected Bonk tag "' . $BonkTagName . '" at offset ' . $info['bonk'][$BonkTagName]['offset'];
break;
}
}
