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Diffstat (limited to 'getid3/module.audio.optimfrog.php')
| -rw-r--r-- | getid3/module.audio.optimfrog.php | 408 |
1 files changed, 408 insertions, 0 deletions
diff --git a/getid3/module.audio.optimfrog.php b/getid3/module.audio.optimfrog.php new file mode 100644 index 0000000..3c2dfb0 --- /dev/null +++ b/getid3/module.audio.optimfrog.php @@ -0,0 +1,408 @@ +<?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.optimfrog.php // +// module for analyzing OptimFROG audio files // +// dependencies: module.audio.riff.php // +// /// +///////////////////////////////////////////////////////////////// + +getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true); + +class getid3_optimfrog +{ + + function getid3_optimfrog(&$fd, &$ThisFileInfo) { + $ThisFileInfo['fileformat'] = 'ofr'; + $ThisFileInfo['audio']['dataformat'] = 'ofr'; + $ThisFileInfo['audio']['bitrate_mode'] = 'vbr'; + $ThisFileInfo['audio']['lossless'] = true; + + fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); + $OFRheader = fread($fd, 8); + if (substr($OFRheader, 0, 5) == '*RIFF') { + + return $this->ParseOptimFROGheader42($fd, $ThisFileInfo); + + } elseif (substr($OFRheader, 0, 3) == 'OFR') { + + return $this->ParseOptimFROGheader45($fd, $ThisFileInfo); + + } + + $ThisFileInfo['error'][] = 'Expecting "*RIFF" or "OFR " at offset '.$ThisFileInfo['avdataoffset'].', found "'.$OFRheader.'"'; + unset($ThisFileInfo['fileformat']); + return false; + } + + + function ParseOptimFROGheader42(&$fd, &$ThisFileInfo) { + // for fileformat of v4.21 and older + + fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); + $OptimFROGheaderData = fread($fd, 45); + $ThisFileInfo['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) { + $ThisFileInfo['avdataend'] -= ($OrignalRIFFheaderSize - $OrignalRIFFdataSize); + fseek($fd, $ThisFileInfo['avdataend'], SEEK_SET); + $RIFFdata .= fread($fd, $OrignalRIFFheaderSize - $OrignalRIFFdataSize); + } + + // move the data chunk after all other chunks (if any) + // so that the RIFF parser doesn't see EOF when trying + // to skip over the data chunk + $RIFFdata = substr($RIFFdata, 0, 36).substr($RIFFdata, 44).substr($RIFFdata, 36, 8); + getid3_riff::ParseRIFFdata($RIFFdata, $ThisFileInfo); + + $ThisFileInfo['audio']['encoder'] = 'OptimFROG '.$OptimFROGencoderVersion_major.'.'.$OptimFROGencoderVersion_minor; + $ThisFileInfo['audio']['channels'] = $ThisFileInfo['riff']['audio'][0]['channels']; + $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['riff']['audio'][0]['sample_rate']; + $ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['riff']['audio'][0]['bits_per_sample']; + $ThisFileInfo['playtime_seconds'] = $OrignalRIFFdataSize / ($ThisFileInfo['audio']['channels'] * $ThisFileInfo['audio']['sample_rate'] * ($ThisFileInfo['audio']['bits_per_sample'] / 8)); + $ThisFileInfo['audio']['bitrate'] = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['playtime_seconds']; + + return true; + } + + + function ParseOptimFROGheader45(&$fd, &$ThisFileInfo) { + // for fileformat of v4.50a and higher + + $RIFFdata = ''; + fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); + while (!feof($fd) && (ftell($fd) < $ThisFileInfo['avdataend'])) { + $BlockOffset = ftell($fd); + $BlockData = fread($fd, 8); + $offset = 8; + $BlockName = substr($BlockData, 0, 4); + $BlockSize = getid3_lib::LittleEndian2Int(substr($BlockData, 4, 4)); + + if ($BlockName == 'OFRX') { + $BlockName = 'OFR '; + } + if (!isset($ThisFileInfo['ofr'][$BlockName])) { + $ThisFileInfo['ofr'][$BlockName] = array(); + } + $thisfile_ofr_thisblock = &$ThisFileInfo['ofr'][$BlockName]; + + switch ($BlockName) { + case 'OFR ': + + // shortcut + $thisfile_ofr_thisblock['offset'] = $BlockOffset; + $thisfile_ofr_thisblock['size'] = $BlockSize; + + $ThisFileInfo['audio']['encoder'] = 'OptimFROG 4.50 alpha'; + switch ($BlockSize) { + case 12: + case 15: + // good + break; + + default: + $ThisFileInfo['warning'][] = '"'.$BlockName.'" contains more data than expected (expected 12 or 15 bytes, found '.$BlockSize.' bytes)'; + break; + } + $BlockData .= fread($fd, $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; + + $ThisFileInfo['audio']['encoder'] = 'OptimFROG '.$thisfile_ofr_thisblock['encoder']; + $ThisFileInfo['audio']['encoder_options'] = '--mode '.$thisfile_ofr_thisblock['compression']; + + if ((($thisfile_ofr_thisblock['raw']['encoder_id'] & 0xF0) >> 4) == 7) { // v4.507 + if (strtolower(getid3_lib::fileextension($ThisFileInfo['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. + $ThisFileInfo['audio']['dataformat'] = 'ofs'; + $ThisFileInfo['audio']['lossless'] = true; + } + } + + } + + $ThisFileInfo['audio']['channels'] = $thisfile_ofr_thisblock['channels']; + $ThisFileInfo['audio']['sample_rate'] = $thisfile_ofr_thisblock['sample_rate']; + $ThisFileInfo['audio']['bits_per_sample'] = $this->OptimFROGbitsPerSampleTypeLookup($thisfile_ofr_thisblock['raw']['sample_type']); + break; + + + case 'COMP': + // unlike other block types, there CAN be multiple COMP blocks + + $COMPdata['offset'] = $BlockOffset; + $COMPdata['size'] = $BlockSize; + + if ($ThisFileInfo['avdataoffset'] == 0) { + $ThisFileInfo['avdataoffset'] = $BlockOffset; + } + + // Only interested in first 14 bytes (only first 12 needed for v4.50 alpha), not actual audio data + $BlockData .= fread($fd, 14); + fseek($fd, $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']); + $offset += 2; + + if ($ThisFileInfo['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; + + $RIFFdata .= fread($fd, $BlockSize); + break; + + case 'TAIL': + $thisfile_ofr_thisblock['offset'] = $BlockOffset; + $thisfile_ofr_thisblock['size'] = $BlockSize; + + if ($BlockSize > 0) { + $RIFFdata .= fread($fd, $BlockSize); + } + break; + + case 'RECV': + // block contains no useful meta data - simply note and skip + + $thisfile_ofr_thisblock['offset'] = $BlockOffset; + $thisfile_ofr_thisblock['size'] = $BlockSize; + + fseek($fd, $BlockSize, SEEK_CUR); + break; + + + case 'APET': + // APEtag v2 + + $thisfile_ofr_thisblock['offset'] = $BlockOffset; + $thisfile_ofr_thisblock['size'] = $BlockSize; + $ThisFileInfo['warning'][] = 'APEtag processing inside OptimFROG not supported in this version ('.GETID3_VERSION.') of getID3()'; + + fseek($fd, $BlockSize, SEEK_CUR); + break; + + + case 'MD5 ': + // APEtag v2 + + $thisfile_ofr_thisblock['offset'] = $BlockOffset; + $thisfile_ofr_thisblock['size'] = $BlockSize; + + if ($BlockSize == 16) { + + $thisfile_ofr_thisblock['md5_binary'] = fread($fd, $BlockSize); + $thisfile_ofr_thisblock['md5_string'] = getid3_lib::PrintHexBytes($thisfile_ofr_thisblock['md5_binary'], true, false, false); + $ThisFileInfo['md5_data_source'] = $thisfile_ofr_thisblock['md5_string']; + + } else { + + $ThisFileInfo['warning'][] = 'Expecting block size of 16 in "MD5 " chunk, found '.$BlockSize.' instead'; + fseek($fd, $BlockSize, SEEK_CUR); + + } + break; + + + default: + $thisfile_ofr_thisblock['offset'] = $BlockOffset; + $thisfile_ofr_thisblock['size'] = $BlockSize; + + $ThisFileInfo['warning'][] = 'Unhandled OptimFROG block type "'.$BlockName.'" at offset '.$thisfile_ofr_thisblock['offset']; + fseek($fd, $BlockSize, SEEK_CUR); + break; + } + } + if (isset($ThisFileInfo['ofr']['TAIL']['offset'])) { + $ThisFileInfo['avdataend'] = $ThisFileInfo['ofr']['TAIL']['offset']; + } + + $ThisFileInfo['playtime_seconds'] = (float) $ThisFileInfo['ofr']['OFR ']['total_samples'] / ($ThisFileInfo['audio']['channels'] * $ThisFileInfo['audio']['sample_rate']); + $ThisFileInfo['audio']['bitrate'] = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['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_riff::ParseRIFFdata($RIFFdata, $ThisFileInfo); + + return true; + } + + + function OptimFROGsampleTypeLookup($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); + } + + 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); + } + + function OptimFROGchannelConfigurationLookup($ChannelConfiguration) { + static $OptimFROGchannelConfigurationLookup = array( + 0 => 'mono', + 1 => 'stereo' + ); + return (isset($OptimFROGchannelConfigurationLookup[$ChannelConfiguration]) ? $OptimFROGchannelConfigurationLookup[$ChannelConfiguration] : false); + } + + function OptimFROGchannelConfigNumChannelsLookup($ChannelConfiguration) { + static $OptimFROGchannelConfigNumChannelsLookup = array( + 0 => 1, + 1 => 2 + ); + return (isset($OptimFROGchannelConfigNumChannelsLookup[$ChannelConfiguration]) ? $OptimFROGchannelConfigNumChannelsLookup[$ChannelConfiguration] : false); + } + + + + // function OptimFROGalgorithmNameLookup($AlgorithID) { + // static $OptimFROGalgorithmNameLookup = array(); + // return (isset($OptimFROGalgorithmNameLookup[$AlgorithID]) ? $OptimFROGalgorithmNameLookup[$AlgorithID] : false); + // } + + + 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($EncoderSystemID).')').')'; + } + + function OptimFROGcompressionLookup($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($CompressionModeID), 2, '0', STR_PAD_LEFT).')'); + } + + function OptimFROGspeedupLookup($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)); + } + +} + + +?>
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