183 lines
7.5 KiB
PHP
183 lines
7.5 KiB
PHP
<?php
|
|
/////////////////////////////////////////////////////////////////
|
|
/// getID3() by James Heinrich <info@getid3.org> //
|
|
// available at http://getid3.sourceforge.net //
|
|
// or http://www.getid3.org //
|
|
/////////////////////////////////////////////////////////////////
|
|
// See readme.txt for more details //
|
|
/////////////////////////////////////////////////////////////////
|
|
// //
|
|
// module.audio.shorten.php //
|
|
// module for analyzing Shorten Audio files //
|
|
// dependencies: NONE //
|
|
// ///
|
|
/////////////////////////////////////////////////////////////////
|
|
|
|
|
|
class getid3_shorten extends getid3_handler
|
|
{
|
|
|
|
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) {
|
|
$info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes(substr($ShortenHeader, 0, 4)).'"';
|
|
return false;
|
|
}
|
|
$info['fileformat'] = 'shn';
|
|
$info['audio']['dataformat'] = 'shn';
|
|
$info['audio']['lossless'] = true;
|
|
$info['audio']['bitrate_mode'] = 'vbr';
|
|
|
|
$info['shn']['version'] = getid3_lib::LittleEndian2Int(substr($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']) {
|
|
$info['shn']['seektable']['length'] = getid3_lib::LittleEndian2Int(substr($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) {
|
|
|
|
$info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['shn']['seektable']['offset'].', found "'.getid3_lib::PrintHexBytes($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_OS_ISWINDOWS) {
|
|
|
|
$RequiredFiles = array('shorten.exe', 'cygwin1.dll', 'head.exe');
|
|
foreach ($RequiredFiles as $required_file) {
|
|
if (!is_readable(GETID3_HELPERAPPSDIR.$required_file)) {
|
|
$info['error'][] = GETID3_HELPERAPPSDIR.$required_file.' does not exist';
|
|
return false;
|
|
}
|
|
}
|
|
$commandline = GETID3_HELPERAPPSDIR.'shorten.exe -x "'.$info['filenamepath'].'" - | '.GETID3_HELPERAPPSDIR.'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 ')) {
|
|
|
|
getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);
|
|
|
|
$fmt_size = getid3_lib::LittleEndian2Int(substr($output, 16, 4));
|
|
$DecodedWAVFORMATEX = getid3_riff::RIFFparseWAVEFORMATex(substr($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') {
|
|
|
|
$info['playtime_seconds'] = getid3_lib::LittleEndian2Int(substr($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;
|
|
}
|
|
|
|
}
|
|
|
|
?>
|