name : module.audio.optimfrog.php <?php ///////////////////////////////////////////////////////////////// /// getID3() by James Heinrich <info@getid3.org> // // available at https://github.com/JamesHeinrich/getID3 // // or https://www.getid3.org // // or http://getid3.sourceforge.net // // see readme.txt for more details // ///////////////////////////////////////////////////////////////// // // // module.audio.optimfrog.php // // module for analyzing OptimFROG audio files // // dependencies: module.audio.riff.php // // /// ///////////////////////////////////////////////////////////////// if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers exit; } getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true); class getid3_optimfrog extends getid3_handler { /** * @return bool */ public function Analyze() { $info = &$this->getid3->info; $info['fileformat'] = 'ofr'; $info['audio']['dataformat'] = 'ofr'; $info['audio']['bitrate_mode'] = 'vbr'; $info['audio']['lossless'] = true; $this->fseek($info['avdataoffset']); $OFRheader = $this->fread(8); if (substr($OFRheader, 0, 5) == '*RIFF') { return $this->ParseOptimFROGheader42(); } elseif (substr($OFRheader, 0, 3) == 'OFR') { return $this->ParseOptimFROGheader45(); } $this->error('Expecting "*RIFF" or "OFR " at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($OFRheader).'"'); unset($info['fileformat']); return false; } /** * @return bool */ public function ParseOptimFROGheader42() { // for fileformat of v4.21 and older $info = &$this->getid3->info; $this->fseek($info['avdataoffset']); $OptimFROGheaderData = $this->fread(45); $info['avdataoffset'] = 45; $OptimFROGencoderVersion_raw = getid3_lib::LittleEndian2Int(substr($OptimFROGheaderData, 0, 1)); $OptimFROGencoderVersion_major = floor($OptimFROGencoderVersion_raw / 10); $OptimFROGencoderVersion_minor = $OptimFROGencoderVersion_raw - ($OptimFROGencoderVersion_major * 10); $RIFFdata = substr($OptimFROGheaderData, 1, 44); $OrignalRIFFheaderSize = getid3_lib::LittleEndian2Int(substr($RIFFdata, 4, 4)) + 8; $OrignalRIFFdataSize = getid3_lib::LittleEndian2Int(substr($RIFFdata, 40, 4)) + 44; if ($OrignalRIFFheaderSize > $OrignalRIFFdataSize) { $info['avdataend'] -= ($OrignalRIFFheaderSize - $OrignalRIFFdataSize); $this->fseek($info['avdataend']); $RIFFdata .= $this->fread($OrignalRIFFheaderSize - $OrignalRIFFdataSize); } // move the data chunk after all other chunks (if any) // so that the RIFF parser doesn't see EOF when trying // to skip over the data chunk $RIFFdata = substr($RIFFdata, 0, 36).substr($RIFFdata, 44).substr($RIFFdata, 36, 8); $getid3_temp = new getID3(); $getid3_temp->openfile($this->getid3->filename, $this->getid3->info['filesize'], $this->getid3->fp); $getid3_temp->info['avdataoffset'] = $info['avdataoffset']; $getid3_temp->info['avdataend'] = $info['avdataend']; $getid3_riff = new getid3_riff($getid3_temp); $getid3_riff->ParseRIFFdata($RIFFdata); $info['riff'] = $getid3_temp->info['riff']; $info['audio']['encoder'] = 'OptimFROG '.$OptimFROGencoderVersion_major.'.'.$OptimFROGencoderVersion_minor; $info['audio']['channels'] = $info['riff']['audio'][0]['channels']; $info['audio']['sample_rate'] = $info['riff']['audio'][0]['sample_rate']; $info['audio']['bits_per_sample'] = $info['riff']['audio'][0]['bits_per_sample']; $info['playtime_seconds'] = $OrignalRIFFdataSize / ($info['audio']['channels'] * $info['audio']['sample_rate'] * ($info['audio']['bits_per_sample'] / 8)); $info['audio']['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds']; unset($getid3_riff, $getid3_temp, $RIFFdata); return true; } /** * @return bool */ public function ParseOptimFROGheader45() { // for fileformat of v4.50a and higher $info = &$this->getid3->info; $RIFFdata = ''; $this->fseek($info['avdataoffset']); while (!feof($this->getid3->fp) && ($this->ftell() < $info['avdataend'])) { $BlockOffset = $this->ftell(); $BlockData = $this->fread(8); $offset = 8; $BlockName = substr($BlockData, 0, 4); $BlockSize = getid3_lib::LittleEndian2Int(substr($BlockData, 4, 4)); if ($BlockName == 'OFRX') { $BlockName = 'OFR '; } if (!isset($info['ofr'][$BlockName])) { $info['ofr'][$BlockName] = array(); } $thisfile_ofr_thisblock = &$info['ofr'][$BlockName]; switch ($BlockName) { case 'OFR ': // shortcut $thisfile_ofr_thisblock['offset'] = $BlockOffset; $thisfile_ofr_thisblock['size'] = $BlockSize; $info['audio']['encoder'] = 'OptimFROG 4.50 alpha'; switch ($BlockSize) { case 12: case 15: // good break; default: $this->warning('"'.$BlockName.'" contains more data than expected (expected 12 or 15 bytes, found '.$BlockSize.' bytes)'); break; } $BlockData .= $this->fread($BlockSize); $thisfile_ofr_thisblock['total_samples'] = getid3_lib::LittleEndian2Int(substr($BlockData, $offset, 6)); $offset += 6; $thisfile_ofr_thisblock['raw']['sample_type'] = getid3_lib::LittleEndian2Int(substr($BlockData, $offset, 1)); $thisfile_ofr_thisblock['sample_type'] = $this->OptimFROGsampleTypeLookup($thisfile_ofr_thisblock['raw']['sample_type']); $offset += 1; $thisfile_ofr_thisblock['channel_config'] = getid3_lib::LittleEndian2Int(substr($BlockData, $offset, 1)); $thisfile_ofr_thisblock['channels'] = $thisfile_ofr_thisblock['channel_config']; $offset += 1; $thisfile_ofr_thisblock['sample_rate'] = getid3_lib::LittleEndian2Int(substr($BlockData, $offset, 4)); $offset += 4; if ($BlockSize > 12) { // OFR 4.504b or higher $thisfile_ofr_thisblock['channels'] = $this->OptimFROGchannelConfigNumChannelsLookup($thisfile_ofr_thisblock['channel_config']); $thisfile_ofr_thisblock['raw']['encoder_id'] = getid3_lib::LittleEndian2Int(substr($BlockData, $offset, 2)); $thisfile_ofr_thisblock['encoder'] = $this->OptimFROGencoderNameLookup($thisfile_ofr_thisblock['raw']['encoder_id']); $offset += 2; $thisfile_ofr_thisblock['raw']['compression'] = getid3_lib::LittleEndian2Int(substr($BlockData, $offset, 1)); $thisfile_ofr_thisblock['compression'] = $this->OptimFROGcompressionLookup($thisfile_ofr_thisblock['raw']['compression']); $thisfile_ofr_thisblock['speedup'] = $this->OptimFROGspeedupLookup($thisfile_ofr_thisblock['raw']['compression']); $offset += 1; $info['audio']['encoder'] = 'OptimFROG '.$thisfile_ofr_thisblock['encoder']; $info['audio']['encoder_options'] = '--mode '.$thisfile_ofr_thisblock['compression']; if ((($thisfile_ofr_thisblock['raw']['encoder_id'] & 0xF0) >> 4) == 7) { // v4.507 if (strtolower(getid3_lib::fileextension($info['filename'])) == 'ofs') { // OptimFROG DualStream format is lossy, but as of v4.507 there is no way to tell the difference // between lossless and lossy other than the file extension. $info['audio']['dataformat'] = 'ofs'; $info['audio']['lossless'] = true; } } } $info['audio']['channels'] = $thisfile_ofr_thisblock['channels']; $info['audio']['sample_rate'] = $thisfile_ofr_thisblock['sample_rate']; $info['audio']['bits_per_sample'] = $this->OptimFROGbitsPerSampleTypeLookup($thisfile_ofr_thisblock['raw']['sample_type']); break; case 'COMP': // unlike other block types, there CAN be multiple COMP blocks $COMPdata = array(); $COMPdata['offset'] = $BlockOffset; $COMPdata['size'] = $BlockSize; if ($info['avdataoffset'] == 0) { $info['avdataoffset'] = $BlockOffset; } // Only interested in first 14 bytes (only first 12 needed for v4.50 alpha), not actual audio data $BlockData .= $this->fread(14); $this->fseek($BlockSize - 14, SEEK_CUR); $COMPdata['crc_32'] = getid3_lib::LittleEndian2Int(substr($BlockData, $offset, 4)); $offset += 4; $COMPdata['sample_count'] = getid3_lib::LittleEndian2Int(substr($BlockData, $offset, 4)); $offset += 4; $COMPdata['raw']['sample_type'] = getid3_lib::LittleEndian2Int(substr($BlockData, $offset, 1)); $COMPdata['sample_type'] = $this->OptimFROGsampleTypeLookup($COMPdata['raw']['sample_type']); $offset += 1; $COMPdata['raw']['channel_configuration'] = getid3_lib::LittleEndian2Int(substr($BlockData, $offset, 1)); $COMPdata['channel_configuration'] = $this->OptimFROGchannelConfigurationLookup($COMPdata['raw']['channel_configuration']); $offset += 1; $COMPdata['raw']['algorithm_id'] = getid3_lib::LittleEndian2Int(substr($BlockData, $offset, 2)); //$COMPdata['algorithm'] = OptimFROGalgorithmNameLookup($COMPdata['raw']['algorithm_id']); $offset += 2; if ($info['ofr']['OFR ']['size'] > 12) { // OFR 4.504b or higher $COMPdata['raw']['encoder_id'] = getid3_lib::LittleEndian2Int(substr($BlockData, $offset, 2)); $COMPdata['encoder'] = $this->OptimFROGencoderNameLookup($COMPdata['raw']['encoder_id']); $offset += 2; } if ($COMPdata['crc_32'] == 0x454E4F4E) { // ASCII value of 'NONE' - placeholder value in v4.50a $COMPdata['crc_32'] = false; } $thisfile_ofr_thisblock[] = $COMPdata; break; case 'HEAD': $thisfile_ofr_thisblock['offset'] = $BlockOffset; $thisfile_ofr_thisblock['size'] = $BlockSize; $RIFFdata .= $this->fread($BlockSize); break; case 'TAIL': $thisfile_ofr_thisblock['offset'] = $BlockOffset; $thisfile_ofr_thisblock['size'] = $BlockSize; if ($BlockSize > 0) { $RIFFdata .= $this->fread($BlockSize); } break; case 'RECV': // block contains no useful meta data - simply note and skip $thisfile_ofr_thisblock['offset'] = $BlockOffset; $thisfile_ofr_thisblock['size'] = $BlockSize; $this->fseek($BlockSize, SEEK_CUR); break; case 'APET': // APEtag v2 $thisfile_ofr_thisblock['offset'] = $BlockOffset; $thisfile_ofr_thisblock['size'] = $BlockSize; $this->warning('APEtag processing inside OptimFROG not supported in this version ('.$this->getid3->version().') of getID3()'); $this->fseek($BlockSize, SEEK_CUR); break; case 'MD5 ': // APEtag v2 $thisfile_ofr_thisblock['offset'] = $BlockOffset; $thisfile_ofr_thisblock['size'] = $BlockSize; if ($BlockSize == 16) { $thisfile_ofr_thisblock['md5_binary'] = $this->fread($BlockSize); $thisfile_ofr_thisblock['md5_string'] = getid3_lib::PrintHexBytes($thisfile_ofr_thisblock['md5_binary'], true, false, false); $info['md5_data_source'] = $thisfile_ofr_thisblock['md5_string']; } else { $this->warning('Expecting block size of 16 in "MD5 " chunk, found '.$BlockSize.' instead'); $this->fseek($BlockSize, SEEK_CUR); } break; default: $thisfile_ofr_thisblock['offset'] = $BlockOffset; $thisfile_ofr_thisblock['size'] = $BlockSize; $this->warning('Unhandled OptimFROG block type "'.$BlockName.'" at offset '.$thisfile_ofr_thisblock['offset']); $this->fseek($BlockSize, SEEK_CUR); break; } } if (isset($info['ofr']['TAIL']['offset'])) { $info['avdataend'] = $info['ofr']['TAIL']['offset']; } $info['playtime_seconds'] = (float) $info['ofr']['OFR ']['total_samples'] / ($info['audio']['channels'] * $info['audio']['sample_rate']); $info['audio']['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds']; // move the data chunk after all other chunks (if any) // so that the RIFF parser doesn't see EOF when trying // to skip over the data chunk $RIFFdata = substr($RIFFdata, 0, 36).substr($RIFFdata, 44).substr($RIFFdata, 36, 8); $getid3_temp = new getID3(); $getid3_temp->openfile($this->getid3->filename, $this->getid3->info['filesize'], $this->getid3->fp); $getid3_temp->info['avdataoffset'] = $info['avdataoffset']; $getid3_temp->info['avdataend'] = $info['avdataend']; $getid3_riff = new getid3_riff($getid3_temp); $getid3_riff->ParseRIFFdata($RIFFdata); $info['riff'] = $getid3_temp->info['riff']; unset($getid3_riff, $getid3_temp, $RIFFdata); return true; } /** * @param int $SampleType * * @return string|false */ public static function OptimFROGsampleTypeLookup($SampleType) { static $OptimFROGsampleTypeLookup = array( 0 => 'unsigned int (8-bit)', 1 => 'signed int (8-bit)', 2 => 'unsigned int (16-bit)', 3 => 'signed int (16-bit)', 4 => 'unsigned int (24-bit)', 5 => 'signed int (24-bit)', 6 => 'unsigned int (32-bit)', 7 => 'signed int (32-bit)', 8 => 'float 0.24 (32-bit)', 9 => 'float 16.8 (32-bit)', 10 => 'float 24.0 (32-bit)' ); return (isset($OptimFROGsampleTypeLookup[$SampleType]) ? $OptimFROGsampleTypeLookup[$SampleType] : false); } /** * @param int $SampleType * * @return int|false */ public static function OptimFROGbitsPerSampleTypeLookup($SampleType) { static $OptimFROGbitsPerSampleTypeLookup = array( 0 => 8, 1 => 8, 2 => 16, 3 => 16, 4 => 24, 5 => 24, 6 => 32, 7 => 32, 8 => 32, 9 => 32, 10 => 32 ); return (isset($OptimFROGbitsPerSampleTypeLookup[$SampleType]) ? $OptimFROGbitsPerSampleTypeLookup[$SampleType] : false); } /** * @param int $ChannelConfiguration * * @return string|false */ public static function OptimFROGchannelConfigurationLookup($ChannelConfiguration) { static $OptimFROGchannelConfigurationLookup = array( 0 => 'mono', 1 => 'stereo' ); return (isset($OptimFROGchannelConfigurationLookup[$ChannelConfiguration]) ? $OptimFROGchannelConfigurationLookup[$ChannelConfiguration] : false); } /** * @param int $ChannelConfiguration * * @return int|false */ public static function OptimFROGchannelConfigNumChannelsLookup($ChannelConfiguration) { static $OptimFROGchannelConfigNumChannelsLookup = array( 0 => 1, 1 => 2 ); return (isset($OptimFROGchannelConfigNumChannelsLookup[$ChannelConfiguration]) ? $OptimFROGchannelConfigNumChannelsLookup[$ChannelConfiguration] : false); } // static function OptimFROGalgorithmNameLookup($AlgorithID) { // static $OptimFROGalgorithmNameLookup = array(); // return (isset($OptimFROGalgorithmNameLookup[$AlgorithID]) ? $OptimFROGalgorithmNameLookup[$AlgorithID] : false); // } /** * @param int $EncoderID * * @return string */ public static function OptimFROGencoderNameLookup($EncoderID) { // version = (encoderID >> 4) + 4500 // system = encoderID & 0xF $EncoderVersion = number_format(((($EncoderID & 0xF0) >> 4) + 4500) / 1000, 3); $EncoderSystemID = ($EncoderID & 0x0F); static $OptimFROGencoderSystemLookup = array( 0x00 => 'Windows console', 0x01 => 'Linux console', 0x0F => 'unknown' ); return $EncoderVersion.' ('.(isset($OptimFROGencoderSystemLookup[$EncoderSystemID]) ? $OptimFROGencoderSystemLookup[$EncoderSystemID] : 'undefined encoder type (0x'.dechex($EncoderSystemID).')').')'; } /** * @param int $CompressionID * * @return string */ public static function OptimFROGcompressionLookup($CompressionID) { // mode = compression >> 3 // speedup = compression & 0x07 $CompressionModeID = ($CompressionID & 0xF8) >> 3; //$CompressionSpeedupID = ($CompressionID & 0x07); static $OptimFROGencoderModeLookup = array( 0x00 => 'fast', 0x01 => 'normal', 0x02 => 'high', 0x03 => 'extra', // extranew (some versions) 0x04 => 'best', // bestnew (some versions) 0x05 => 'ultra', 0x06 => 'insane', 0x07 => 'highnew', 0x08 => 'extranew', 0x09 => 'bestnew' ); return (isset($OptimFROGencoderModeLookup[$CompressionModeID]) ? $OptimFROGencoderModeLookup[$CompressionModeID] : 'undefined mode (0x'.str_pad(dechex($CompressionModeID), 2, '0', STR_PAD_LEFT).')'); } /** * @param int $CompressionID * * @return string */ public static function OptimFROGspeedupLookup($CompressionID) { // mode = compression >> 3 // speedup = compression & 0x07 //$CompressionModeID = ($CompressionID & 0xF8) >> 3; $CompressionSpeedupID = ($CompressionID & 0x07); static $OptimFROGencoderSpeedupLookup = array( 0x00 => '1x', 0x01 => '2x', 0x02 => '4x' ); return (isset($OptimFROGencoderSpeedupLookup[$CompressionSpeedupID]) ? $OptimFROGencoderSpeedupLookup[$CompressionSpeedupID] : 'undefined mode (0x'.dechex($CompressionSpeedupID)); } }