/**
* @return bool
*/
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);
$info['flv']['header']['version'] = Helper::BigEndian2Int(substr($FLVheader, 3, 1));
$TypeFlags = Helper::BigEndian2Int(substr($FLVheader, 4, 1));
$magic = 'FLV';
if ($info['flv']['header']['signature'] != $magic) {
$info['error'][] = 'Expecting "' . Helper::PrintHexBytes($magic) . '" at offset ' . $info['avdataoffset'] . ', found "' . Helper::PrintHexBytes($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);
$FrameSizeDataLength = Helper::BigEndian2Int(fread($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);
$PreviousTagLength = Helper::BigEndian2Int(substr($ThisTagHeader, 0, 4));
$TagType = Helper::BigEndian2Int(substr($ThisTagHeader, 4, 1));
$DataLength = Helper::BigEndian2Int(substr($ThisTagHeader, 5, 3));
$Timestamp = Helper::BigEndian2Int(substr($ThisTagHeader, 8, 3));
$LastHeaderByte = Helper::BigEndian2Int(substr($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
$AVCPacketType = Helper::BigEndian2Int(substr($FLVvideoHeader, 0, 1));
if ($AVCPacketType == AVCSequenceParameterSetReader::H264_AVC_SEQUENCE_HEADER) {
// read AVCDecoderConfigurationRecord
$configurationVersion = Helper::BigEndian2Int(substr($FLVvideoHeader, 4, 1));
$AVCProfileIndication = Helper::BigEndian2Int(substr($FLVvideoHeader, 5, 1));
$profile_compatibility = Helper::BigEndian2Int(substr($FLVvideoHeader, 6, 1));
$lengthSizeMinusOne = Helper::BigEndian2Int(substr($FLVvideoHeader, 7, 1));
$numOfSequenceParameterSets = Helper::BigEndian2Int(substr($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));
$spsSize = Helper::LittleEndian2Int(substr($FLVvideoHeader, 9, 2));
// read the first SequenceParameterSet
$sps = fread($this->getid3->fp, $spsSize);
if (strlen($sps) == $spsSize) {
// make sure that whole SequenceParameterSet was red
$spsReader = new AVCSequenceParameterSetReader($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) {
$PictureSizeType = Helper::BigEndian2Int(substr($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;
$PictureSizeEnc['x'] = Helper::BigEndian2Int(substr($FLVvideoHeader, 4, 2));
$PictureSizeEnc['y'] = Helper::BigEndian2Int(substr($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:
$PictureSizeEnc['x'] = Helper::BigEndian2Int(substr($FLVvideoHeader, 4, 3));
$PictureSizeEnc['y'] = Helper::BigEndian2Int(substr($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);
$AMFstream = new AMFStream($datachunk);
$reader = new AMFReader($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] = 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;
}
/**
* @staticvar type $MPEGaudioVersionLookup
* @staticvar type $MPEGaudioLayerLookup
* @staticvar type $MPEGaudioBitrateLookup
*
* @param type $avdataoffset
* @param bool $BitrateHistogram
*
* @return bool
*/
public function getOnlyMPEGaudioInfo($avdataoffset, $BitrateHistogram = false)
{
// looks for synch, decodes MPEG audio header
$info =& $this->getGetId3()->info;
static $MPEGaudioVersionLookup;
static $MPEGaudioLayerLookup;
static $MPEGaudioBitrateLookup;
if (empty($MPEGaudioVersionLookup)) {
$MPEGaudioVersionLookup = self::MPEGaudioVersionArray();
$MPEGaudioLayerLookup = self::MPEGaudioLayerArray();
$MPEGaudioBitrateLookup = self::MPEGaudioBitrateArray();
}
fseek($this->getGetId3()->fp, $avdataoffset, SEEK_SET);
$sync_seek_buffer_size = min(128 * 1024, $info['avdataend'] - $avdataoffset);
if ($sync_seek_buffer_size <= 0) {
$info['error'][] = 'Invalid $sync_seek_buffer_size at offset ' . $avdataoffset;
return false;
}
$header = fread($this->getGetId3()->fp, $sync_seek_buffer_size);
$sync_seek_buffer_size = strlen($header);
$SynchSeekOffset = 0;
while ($SynchSeekOffset < $sync_seek_buffer_size) {
if ($avdataoffset + $SynchSeekOffset < $info['avdataend'] && !feof($this->getGetId3()->fp)) {
if ($SynchSeekOffset > $sync_seek_buffer_size) {
// if a synch's not found within the first 128k bytes, then give up
$info['error'][] = 'Could not find valid MPEG audio synch within the first ' . round($sync_seek_buffer_size / 1024) . 'kB';
if (isset($info['audio']['bitrate'])) {
unset($info['audio']['bitrate']);
}
if (isset($info['mpeg']['audio'])) {
unset($info['mpeg']['audio']);
}
if (empty($info['mpeg'])) {
unset($info['mpeg']);
}
return false;
} elseif (feof($this->getGetId3()->fp)) {
$info['error'][] = 'Could not find valid MPEG audio synch before end of file';
if (isset($info['audio']['bitrate'])) {
unset($info['audio']['bitrate']);
}
if (isset($info['mpeg']['audio'])) {
unset($info['mpeg']['audio']);
}
if (isset($info['mpeg']) && (!is_array($info['mpeg']) || count($info['mpeg']) == 0)) {
unset($info['mpeg']);
}
return false;
}
}
if ($SynchSeekOffset + 1 >= strlen($header)) {
$info['error'][] = 'Could not find valid MPEG synch before end of file';
return false;
}
if ($header[$SynchSeekOffset] == "ÿ" && $header[$SynchSeekOffset + 1] > "à") {
// synch detected
if (!isset($FirstFrameThisfileInfo) && !isset($info['mpeg']['audio'])) {
$FirstFrameThisfileInfo = $info;
$FirstFrameAVDataOffset = $avdataoffset + $SynchSeekOffset;
if (!$this->decodeMPEGaudioHeader($FirstFrameAVDataOffset, $FirstFrameThisfileInfo, false)) {
// if this is the first valid MPEG-audio frame, save it in case it's a VBR header frame and there's
// garbage between this frame and a valid sequence of MPEG-audio frames, to be restored below
unset($FirstFrameThisfileInfo);
}
}
$dummy = $info;
// only overwrite real data if valid header found
if ($this->decodeMPEGaudioHeader($avdataoffset + $SynchSeekOffset, $dummy, true)) {
$info = $dummy;
$info['avdataoffset'] = $avdataoffset + $SynchSeekOffset;
switch (isset($info['fileformat']) ? $info['fileformat'] : '') {
case '':
case 'id3':
case 'ape':
case 'mp3':
$info['fileformat'] = 'mp3';
$info['audio']['dataformat'] = 'mp3';
break;
}
if (isset($FirstFrameThisfileInfo['mpeg']['audio']['bitrate_mode']) && $FirstFrameThisfileInfo['mpeg']['audio']['bitrate_mode'] == 'vbr') {
if (!(abs($info['audio']['bitrate'] - $FirstFrameThisfileInfo['audio']['bitrate']) <= 1)) {
// If there is garbage data between a valid VBR header frame and a sequence
// of valid MPEG-audio frames the VBR data is no longer discarded.
$info = $FirstFrameThisfileInfo;
$info['avdataoffset'] = $FirstFrameAVDataOffset;
$info['fileformat'] = 'mp3';
$info['audio']['dataformat'] = 'mp3';
$dummy = $info;
unset($dummy['mpeg']['audio']);
$GarbageOffsetStart = $FirstFrameAVDataOffset + $FirstFrameThisfileInfo['mpeg']['audio']['framelength'];
$GarbageOffsetEnd = $avdataoffset + $SynchSeekOffset;
if ($this->decodeMPEGaudioHeader($GarbageOffsetEnd, $dummy, true, true)) {
$info = $dummy;
$info['avdataoffset'] = $GarbageOffsetEnd;
$info['warning'][] = 'apparently-valid VBR header not used because could not find ' . self::GETID3_MP3_VALID_CHECK_FRAMES . ' consecutive MPEG-audio frames immediately after VBR header (garbage data for ' . ($GarbageOffsetEnd - $GarbageOffsetStart) . ' bytes between ' . $GarbageOffsetStart . ' and ' . $GarbageOffsetEnd . '), but did find valid CBR stream starting at ' . $GarbageOffsetEnd;
} else {
$info['warning'][] = 'using data from VBR header even though could not find ' . self::GETID3_MP3_VALID_CHECK_FRAMES . ' consecutive MPEG-audio frames immediately after VBR header (garbage data for ' . ($GarbageOffsetEnd - $GarbageOffsetStart) . ' bytes between ' . $GarbageOffsetStart . ' and ' . $GarbageOffsetEnd . ')';
}
}
}
if (isset($info['mpeg']['audio']['bitrate_mode']) && $info['mpeg']['audio']['bitrate_mode'] == 'vbr' && !isset($info['mpeg']['audio']['VBR_method'])) {
// VBR file with no VBR header
$BitrateHistogram = true;
}
if ($BitrateHistogram) {
$info['mpeg']['audio']['stereo_distribution'] = array('stereo' => 0, 'joint stereo' => 0, 'dual channel' => 0, 'mono' => 0);
$info['mpeg']['audio']['version_distribution'] = array('1' => 0, '2' => 0, '2.5' => 0);
if ($info['mpeg']['audio']['version'] == '1') {
if ($info['mpeg']['audio']['layer'] == 3) {
$info['mpeg']['audio']['bitrate_distribution'] = array('free' => 0, 32000 => 0, 40000 => 0, 48000 => 0, 56000 => 0, 64000 => 0, 80000 => 0, 96000 => 0, 112000 => 0, 128000 => 0, 160000 => 0, 192000 => 0, 224000 => 0, 256000 => 0, 320000 => 0);
} elseif ($info['mpeg']['audio']['layer'] == 2) {
$info['mpeg']['audio']['bitrate_distribution'] = array('free' => 0, 32000 => 0, 48000 => 0, 56000 => 0, 64000 => 0, 80000 => 0, 96000 => 0, 112000 => 0, 128000 => 0, 160000 => 0, 192000 => 0, 224000 => 0, 256000 => 0, 320000 => 0, 384000 => 0);
} elseif ($info['mpeg']['audio']['layer'] == 1) {
$info['mpeg']['audio']['bitrate_distribution'] = array('free' => 0, 32000 => 0, 64000 => 0, 96000 => 0, 128000 => 0, 160000 => 0, 192000 => 0, 224000 => 0, 256000 => 0, 288000 => 0, 320000 => 0, 352000 => 0, 384000 => 0, 416000 => 0, 448000 => 0);
}
} elseif ($info['mpeg']['audio']['layer'] == 1) {
$info['mpeg']['audio']['bitrate_distribution'] = array('free' => 0, 32000 => 0, 48000 => 0, 56000 => 0, 64000 => 0, 80000 => 0, 96000 => 0, 112000 => 0, 128000 => 0, 144000 => 0, 160000 => 0, 176000 => 0, 192000 => 0, 224000 => 0, 256000 => 0);
} else {
$info['mpeg']['audio']['bitrate_distribution'] = array('free' => 0, 8000 => 0, 16000 => 0, 24000 => 0, 32000 => 0, 40000 => 0, 48000 => 0, 56000 => 0, 64000 => 0, 80000 => 0, 96000 => 0, 112000 => 0, 128000 => 0, 144000 => 0, 160000 => 0);
}
$dummy = array('error' => $info['error'], 'warning' => $info['warning'], 'avdataend' => $info['avdataend'], 'avdataoffset' => $info['avdataoffset']);
$synchstartoffset = $info['avdataoffset'];
fseek($this->getGetId3()->fp, $info['avdataoffset'], SEEK_SET);
// you can play with these numbers:
$max_frames_scan = 50000;
$max_scan_segments = 10;
// don't play with these numbers:
$FastMode = false;
$SynchErrorsFound = 0;
$frames_scanned = 0;
$this_scan_segment = 0;
$frames_scan_per_segment = ceil($max_frames_scan / $max_scan_segments);
$pct_data_scanned = 0;
for ($current_segment = 0; $current_segment < $max_scan_segments; ++$current_segment) {
$frames_scanned_this_segment = 0;
if (ftell($this->getGetId3()->fp) >= $info['avdataend']) {
break;
}
$scan_start_offset[$current_segment] = max(ftell($this->getGetId3()->fp), $info['avdataoffset'] + round($current_segment * (($info['avdataend'] - $info['avdataoffset']) / $max_scan_segments)));
if ($current_segment > 0) {
fseek($this->getGetId3()->fp, $scan_start_offset[$current_segment], SEEK_SET);
$buffer_4k = fread($this->getGetId3()->fp, 4096);
for ($j = 0; $j < strlen($buffer_4k) - 4; ++$j) {
if ($buffer_4k[$j] == "ÿ" && $buffer_4k[$j + 1] > "à") {
// synch detected
if ($this->decodeMPEGaudioHeader($scan_start_offset[$current_segment] + $j, $dummy, false, false, $FastMode)) {
$calculated_next_offset = $scan_start_offset[$current_segment] + $j + $dummy['mpeg']['audio']['framelength'];
if ($this->decodeMPEGaudioHeader($calculated_next_offset, $dummy, false, false, $FastMode)) {
$scan_start_offset[$current_segment] += $j;
break;
}
}
}
}
}
$synchstartoffset = $scan_start_offset[$current_segment];
while ($this->decodeMPEGaudioHeader($synchstartoffset, $dummy, false, false, $FastMode)) {
$FastMode = true;
$thisframebitrate = $MPEGaudioBitrateLookup[$MPEGaudioVersionLookup[$dummy['mpeg']['audio']['raw']['version']]][$MPEGaudioLayerLookup[$dummy['mpeg']['audio']['raw']['layer']]][$dummy['mpeg']['audio']['raw']['bitrate']];
if (empty($dummy['mpeg']['audio']['framelength'])) {
++$SynchErrorsFound;
++$synchstartoffset;
} else {
Helper::safe_inc($info['mpeg']['audio']['bitrate_distribution'][$thisframebitrate]);
Helper::safe_inc($info['mpeg']['audio']['stereo_distribution'][$dummy['mpeg']['audio']['channelmode']]);
Helper::safe_inc($info['mpeg']['audio']['version_distribution'][$dummy['mpeg']['audio']['version']]);
$synchstartoffset += $dummy['mpeg']['audio']['framelength'];
}
++$frames_scanned;
if ($frames_scan_per_segment && ++$frames_scanned_this_segment >= $frames_scan_per_segment) {
$this_pct_scanned = (ftell($this->getGetId3()->fp) - $scan_start_offset[$current_segment]) / ($info['avdataend'] - $info['avdataoffset']);
if ($current_segment == 0 && $this_pct_scanned * $max_scan_segments >= 1) {
// file likely contains < $max_frames_scan, just scan as one segment
$max_scan_segments = 1;
$frames_scan_per_segment = $max_frames_scan;
} else {
$pct_data_scanned += $this_pct_scanned;
break;
}
}
}
}
if ($pct_data_scanned > 0) {
$info['warning'][] = 'too many MPEG audio frames to scan, only scanned ' . $frames_scanned . ' frames in ' . $max_scan_segments . ' segments (' . number_format($pct_data_scanned * 100, 1) . '% of file) and extrapolated distribution, playtime and bitrate may be incorrect.';
foreach ($info['mpeg']['audio'] as $key1 => $value1) {
if (!preg_match('#_distribution$#i', $key1)) {
continue;
}
foreach ($value1 as $key2 => $value2) {
$info['mpeg']['audio'][$key1][$key2] = round($value2 / $pct_data_scanned);
}
}
}
if ($SynchErrorsFound > 0) {
$info['warning'][] = 'Found ' . $SynchErrorsFound . ' synch errors in histogram analysis';
//return false;
}
$bittotal = 0;
$framecounter = 0;
foreach ($info['mpeg']['audio']['bitrate_distribution'] as $bitratevalue => $bitratecount) {
$framecounter += $bitratecount;
if ($bitratevalue != 'free') {
$bittotal += $bitratevalue * $bitratecount;
}
}
if ($framecounter == 0) {
$info['error'][] = 'Corrupt MP3 file: framecounter == zero';
return false;
}
$info['mpeg']['audio']['frame_count'] = Helper::CastAsInt($framecounter);
$info['mpeg']['audio']['bitrate'] = $bittotal / $framecounter;
$info['audio']['bitrate'] = $info['mpeg']['audio']['bitrate'];
// Definitively set VBR vs CBR, even if the Xing/LAME/VBRI header says differently
$distinct_bitrates = 0;
foreach ($info['mpeg']['audio']['bitrate_distribution'] as $bitrate_value => $bitrate_count) {
if ($bitrate_count > 0) {
++$distinct_bitrates;
}
}
if ($distinct_bitrates > 1) {
$info['mpeg']['audio']['bitrate_mode'] = 'vbr';
} else {
$info['mpeg']['audio']['bitrate_mode'] = 'cbr';
}
$info['audio']['bitrate_mode'] = $info['mpeg']['audio']['bitrate_mode'];
}
break;
// exit while()
}
}
++$SynchSeekOffset;
if ($avdataoffset + $SynchSeekOffset >= $info['avdataend']) {
// end of file/data
if (empty($info['mpeg']['audio'])) {
$info['error'][] = 'could not find valid MPEG synch before end of file';
if (isset($info['audio']['bitrate'])) {
unset($info['audio']['bitrate']);
}
if (isset($info['mpeg']['audio'])) {
unset($info['mpeg']['audio']);
}
if (isset($info['mpeg']) && (!is_array($info['mpeg']) || empty($info['mpeg']))) {
unset($info['mpeg']);
}
return false;
}
break;
}
}
$info['audio']['channels'] = $info['mpeg']['audio']['channels'];
$info['audio']['channelmode'] = $info['mpeg']['audio']['channelmode'];
$info['audio']['sample_rate'] = $info['mpeg']['audio']['sample_rate'];
return true;
}
/**
* @return bool
*/
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) {
$info['error'][] = 'Expecting "' . Helper::PrintHexBytes($magic) . '" at offset ' . $info['avdataoffset'] . ', found "' . Helper::PrintHexBytes(substr($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)
$thisfile_voc['header']['datablock_offset'] = Helper::LittleEndian2Int(substr($VOCheader, 20, 2));
$thisfile_voc['header']['minor_version'] = Helper::LittleEndian2Int(substr($VOCheader, 22, 1));
$thisfile_voc['header']['major_version'] = Helper::LittleEndian2Int(substr($VOCheader, 23, 1));
do {
$BlockOffset = ftell($this->getid3->fp);
$BlockData = fread($this->getid3->fp, 4);
$BlockType = ord($BlockData[0]);
$BlockSize = Helper::LittleEndian2Int(substr($BlockData, 1, 3));
$ThisBlock = array();
Helper::safe_inc($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);
$ThisBlock['sample_rate_id'] = Helper::LittleEndian2Int(substr($BlockData, 4, 1));
$ThisBlock['compression_type'] = Helper::LittleEndian2Int(substr($BlockData, 5, 1));
$ThisBlock['compression_name'] = $this->VOCcompressionTypeLookup($ThisBlock['compression_type']);
if ($ThisBlock['compression_type'] <= 3) {
$thisfile_voc['compressed_bits_per_sample'] = 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'] = 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))
$ThisBlock['time_constant'] = Helper::LittleEndian2Int(substr($BlockData, 4, 2));
$ThisBlock['pack_method'] = Helper::LittleEndian2Int(substr($BlockData, 6, 1));
$ThisBlock['stereo'] = (bool) Helper::LittleEndian2Int(substr($BlockData, 7, 1));
$thisfile_audio['channels'] = $ThisBlock['stereo'] ? 2 : 1;
$thisfile_audio['sample_rate'] = 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);
$ThisBlock['sample_rate'] = Helper::LittleEndian2Int(substr($BlockData, 4, 4));
$ThisBlock['bits_per_sample'] = Helper::LittleEndian2Int(substr($BlockData, 8, 1));
$ThisBlock['channels'] = Helper::LittleEndian2Int(substr($BlockData, 9, 1));
$ThisBlock['wFormat'] = Helper::LittleEndian2Int(substr($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;
}
/**
* @return bool
*/
public function analyze()
{
$info =& $this->getid3->info;
// initialize these values to an empty array, otherwise they default to NULL
// and you can't append array values to a NULL value
$info['riff'] = array('raw' => array());
// Shortcuts
$thisfile_riff =& $info['riff'];
$thisfile_riff_raw =& $thisfile_riff['raw'];
$thisfile_audio =& $info['audio'];
$thisfile_video =& $info['video'];
$thisfile_audio_dataformat =& $thisfile_audio['dataformat'];
$thisfile_riff_audio =& $thisfile_riff['audio'];
$thisfile_riff_video =& $thisfile_riff['video'];
$Original['avdataoffset'] = $info['avdataoffset'];
$Original['avdataend'] = $info['avdataend'];
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$RIFFheader = fread($this->getid3->fp, 12);
$RIFFsubtype = substr($RIFFheader, 8, 4);
switch (substr($RIFFheader, 0, 4)) {
case 'FORM':
$info['fileformat'] = 'aiff';
$thisfile_riff['header_size'] = $this->EitherEndian2Int(substr($RIFFheader, 4, 4));
$thisfile_riff[$RIFFsubtype] = $this->ParseRIFF($info['avdataoffset'] + 12, $info['avdataoffset'] + $thisfile_riff['header_size']);
break;
case 'RIFF':
// AVI, WAV, etc
// AVI, WAV, etc
case 'SDSS':
// SDSS is identical to RIFF, just renamed. Used by SmartSound QuickTracks (www.smartsound.com)
// SDSS is identical to RIFF, just renamed. Used by SmartSound QuickTracks (www.smartsound.com)
case 'RMP3':
// RMP3 is identical to RIFF, just renamed. Used by [unknown program] when creating RIFF-MP3s
$info['fileformat'] = 'riff';
$thisfile_riff['header_size'] = $this->EitherEndian2Int(substr($RIFFheader, 4, 4));
if ($RIFFsubtype == 'RMP3') {
// RMP3 is identical to WAVE, just renamed. Used by [unknown program] when creating RIFF-MP3s
$RIFFsubtype = 'WAVE';
}
$thisfile_riff[$RIFFsubtype] = $this->ParseRIFF($info['avdataoffset'] + 12, $info['avdataoffset'] + $thisfile_riff['header_size']);
if ($info['avdataend'] - $info['filesize'] == 1) {
// LiteWave appears to incorrectly *not* pad actual output file
// to nearest WORD boundary so may appear to be short by one
// byte, in which case - skip warning
$info['avdataend'] = $info['filesize'];
}
$nextRIFFoffset = $Original['avdataoffset'] + 8 + $thisfile_riff['header_size'];
// 8 = "RIFF" + 32-bit offset
while ($nextRIFFoffset < min($info['filesize'], $info['avdataend'])) {
if (!Helper::intValueSupported($nextRIFFoffset + 1024)) {
$info['error'][] = 'AVI extends beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB and PHP filesystem functions cannot read that far, playtime is probably wrong';
$info['warning'][] = '[avdataend] value may be incorrect, multiple AVIX chunks may be present';
break;
} else {
fseek($this->getid3->fp, $nextRIFFoffset, SEEK_SET);
$nextRIFFheader = fread($this->getid3->fp, 12);
if ($nextRIFFoffset == $info['avdataend'] - 1) {
if (substr($nextRIFFheader, 0, 1) == "") {
// RIFF padded to WORD boundary, we're actually already at the end
break;
}
}
$nextRIFFheaderID = substr($nextRIFFheader, 0, 4);
$nextRIFFsize = $this->EitherEndian2Int(substr($nextRIFFheader, 4, 4));
$nextRIFFtype = substr($nextRIFFheader, 8, 4);
$chunkdata = array();
$chunkdata['offset'] = $nextRIFFoffset + 8;
$chunkdata['size'] = $nextRIFFsize;
$nextRIFFoffset = $chunkdata['offset'] + $chunkdata['size'];
switch ($nextRIFFheaderID) {
case 'RIFF':
$info['avdataend'] = $nextRIFFoffset;
if (!Helper::intValueSupported($info['avdataend'])) {
$info['error'][] = 'AVI extends beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB and PHP filesystem functions cannot read that far, playtime is probably wrong';
$info['warning'][] = '[avdataend] value may be incorrect, multiple AVIX chunks may be present';
}
$chunkdata['chunks'] = $this->ParseRIFF($chunkdata['offset'] + 4, $chunkdata['offset'] + $chunkdata['size']);
if (!isset($thisfile_riff[$nextRIFFtype])) {
$thisfile_riff[$nextRIFFtype] = array();
}
$thisfile_riff[$nextRIFFtype][] = $chunkdata;
break;
case 'JUNK':
// ignore
$thisfile_riff[$nextRIFFheaderID][] = $chunkdata;
break;
default:
if ($info['filesize'] == $chunkdata['offset'] - 8 + 128) {
$DIVXTAG = $nextRIFFheader . fread($this->getid3->fp, 128 - 12);
if (substr($DIVXTAG, -7) == 'DIVXTAG') {
// DIVXTAG is supposed to be inside an IDVX chunk in a LIST chunk, but some bad encoders just slap it on the end of a file
$info['warning'][] = 'Found wrongly-structured DIVXTAG at offset ' . (ftell($this->getid3->fp) - 128 + 12) . ', parsing anyway';
$thisfile_riff['DIVXTAG'] = $this->ParseDIVXTAG($DIVXTAG);
foreach ($thisfile_riff['DIVXTAG'] as $key => $value) {
if ($value && !preg_match('#_id$#', $key)) {
$thisfile_riff['comments'][$key][] = $value;
}
}
break 2;
}
}
$info['warning'][] = 'expecting "RIFF" or "JUNK" at ' . $nextRIFFoffset . ', found ' . Helper::PrintHexBytes(substr($nextRIFFheader, 0, 4)) . ' - skipping rest of file';
break 2;
}
}
}
if ($RIFFsubtype == 'WAVE') {
$thisfile_riff_WAVE =& $thisfile_riff['WAVE'];
}
break;
default:
$info['error'][] = 'Cannot parse RIFF (this is maybe not a RIFF / WAV / AVI file?) - expecting "FORM|RIFF|SDSS|RMP3" found "' . $RIFFsubtype . '" instead';
unset($info['fileformat']);
return false;
break;
}
$streamindex = 0;
switch ($RIFFsubtype) {
case 'WAVE':
if (empty($thisfile_audio['bitrate_mode'])) {
$thisfile_audio['bitrate_mode'] = 'cbr';
}
if (empty($thisfile_audio_dataformat)) {
$thisfile_audio_dataformat = 'wav';
}
if (isset($thisfile_riff_WAVE['data'][0]['offset'])) {
$info['avdataoffset'] = $thisfile_riff_WAVE['data'][0]['offset'] + 8;
$info['avdataend'] = $info['avdataoffset'] + $thisfile_riff_WAVE['data'][0]['size'];
}
if (isset($thisfile_riff_WAVE['fmt '][0]['data'])) {
$thisfile_riff_audio[$streamindex] = self::RIFFparseWAVEFORMATex($thisfile_riff_WAVE['fmt '][0]['data']);
$thisfile_audio['wformattag'] = $thisfile_riff_audio[$streamindex]['raw']['wFormatTag'];
if (!isset($thisfile_riff_audio[$streamindex]['bitrate']) || $thisfile_riff_audio[$streamindex]['bitrate'] == 0) {
$info['error'][] = 'Corrupt RIFF file: bitrate_audio == zero';
return false;
}
$thisfile_riff_raw['fmt '] = $thisfile_riff_audio[$streamindex]['raw'];
unset($thisfile_riff_audio[$streamindex]['raw']);
$thisfile_audio['streams'][$streamindex] = $thisfile_riff_audio[$streamindex];
$thisfile_audio = Helper::array_merge_noclobber($thisfile_audio, $thisfile_riff_audio[$streamindex]);
if (substr($thisfile_audio['codec'], 0, strlen('unknown: 0x')) == 'unknown: 0x') {
$info['warning'][] = 'Audio codec = ' . $thisfile_audio['codec'];
}
$thisfile_audio['bitrate'] = $thisfile_riff_audio[$streamindex]['bitrate'];
$info['playtime_seconds'] = (double) (($info['avdataend'] - $info['avdataoffset']) * 8 / $thisfile_audio['bitrate']);
$thisfile_audio['lossless'] = false;
if (isset($thisfile_riff_WAVE['data'][0]['offset']) && isset($thisfile_riff_raw['fmt ']['wFormatTag'])) {
switch ($thisfile_riff_raw['fmt ']['wFormatTag']) {
case 0x1:
// PCM
$thisfile_audio['lossless'] = true;
break;
case 0x2000:
// AC-3
$thisfile_audio_dataformat = 'ac3';
break;
default:
// do nothing
break;
}
}
$thisfile_audio['streams'][$streamindex]['wformattag'] = $thisfile_audio['wformattag'];
$thisfile_audio['streams'][$streamindex]['bitrate_mode'] = $thisfile_audio['bitrate_mode'];
$thisfile_audio['streams'][$streamindex]['lossless'] = $thisfile_audio['lossless'];
$thisfile_audio['streams'][$streamindex]['dataformat'] = $thisfile_audio_dataformat;
}
if (isset($thisfile_riff_WAVE['rgad'][0]['data'])) {
// shortcuts
$rgadData =& $thisfile_riff_WAVE['rgad'][0]['data'];
$thisfile_riff_raw['rgad'] = array('track' => array(), 'album' => array());
$thisfile_riff_raw_rgad =& $thisfile_riff_raw['rgad'];
$thisfile_riff_raw_rgad_track =& $thisfile_riff_raw_rgad['track'];
$thisfile_riff_raw_rgad_album =& $thisfile_riff_raw_rgad['album'];
$thisfile_riff_raw_rgad['fPeakAmplitude'] = Helper::LittleEndian2Float(substr($rgadData, 0, 4));
$thisfile_riff_raw_rgad['nRadioRgAdjust'] = $this->EitherEndian2Int(substr($rgadData, 4, 2));
$thisfile_riff_raw_rgad['nAudiophileRgAdjust'] = $this->EitherEndian2Int(substr($rgadData, 6, 2));
$nRadioRgAdjustBitstring = str_pad(Helper::Dec2Bin($thisfile_riff_raw_rgad['nRadioRgAdjust']), 16, '0', STR_PAD_LEFT);
$nAudiophileRgAdjustBitstring = str_pad(Helper::Dec2Bin($thisfile_riff_raw_rgad['nAudiophileRgAdjust']), 16, '0', STR_PAD_LEFT);
$thisfile_riff_raw_rgad_track['name'] = Helper::Bin2Dec(substr($nRadioRgAdjustBitstring, 0, 3));
$thisfile_riff_raw_rgad_track['originator'] = Helper::Bin2Dec(substr($nRadioRgAdjustBitstring, 3, 3));
$thisfile_riff_raw_rgad_track['signbit'] = Helper::Bin2Dec(substr($nRadioRgAdjustBitstring, 6, 1));
$thisfile_riff_raw_rgad_track['adjustment'] = Helper::Bin2Dec(substr($nRadioRgAdjustBitstring, 7, 9));
$thisfile_riff_raw_rgad_album['name'] = Helper::Bin2Dec(substr($nAudiophileRgAdjustBitstring, 0, 3));
$thisfile_riff_raw_rgad_album['originator'] = Helper::Bin2Dec(substr($nAudiophileRgAdjustBitstring, 3, 3));
$thisfile_riff_raw_rgad_album['signbit'] = Helper::Bin2Dec(substr($nAudiophileRgAdjustBitstring, 6, 1));
$thisfile_riff_raw_rgad_album['adjustment'] = Helper::Bin2Dec(substr($nAudiophileRgAdjustBitstring, 7, 9));
$thisfile_riff['rgad']['peakamplitude'] = $thisfile_riff_raw_rgad['fPeakAmplitude'];
if ($thisfile_riff_raw_rgad_track['name'] != 0 && $thisfile_riff_raw_rgad_track['originator'] != 0) {
$thisfile_riff['rgad']['track']['name'] = Helper::RGADnameLookup($thisfile_riff_raw_rgad_track['name']);
$thisfile_riff['rgad']['track']['originator'] = Helper::RGADoriginatorLookup($thisfile_riff_raw_rgad_track['originator']);
$thisfile_riff['rgad']['track']['adjustment'] = Helper::RGADadjustmentLookup($thisfile_riff_raw_rgad_track['adjustment'], $thisfile_riff_raw_rgad_track['signbit']);
}
if ($thisfile_riff_raw_rgad_album['name'] != 0 && $thisfile_riff_raw_rgad_album['originator'] != 0) {
$thisfile_riff['rgad']['album']['name'] = Helper::RGADnameLookup($thisfile_riff_raw_rgad_album['name']);
$thisfile_riff['rgad']['album']['originator'] = Helper::RGADoriginatorLookup($thisfile_riff_raw_rgad_album['originator']);
$thisfile_riff['rgad']['album']['adjustment'] = Helper::RGADadjustmentLookup($thisfile_riff_raw_rgad_album['adjustment'], $thisfile_riff_raw_rgad_album['signbit']);
}
}
if (isset($thisfile_riff_WAVE['fact'][0]['data'])) {
$thisfile_riff_raw['fact']['NumberOfSamples'] = $this->EitherEndian2Int(substr($thisfile_riff_WAVE['fact'][0]['data'], 0, 4));
// This should be a good way of calculating exact playtime,
// but some sample files have had incorrect number of samples,
// so cannot use this method
// if (!empty($thisfile_riff_raw['fmt ']['nSamplesPerSec'])) {
// $info['playtime_seconds'] = (float) $thisfile_riff_raw['fact']['NumberOfSamples'] / $thisfile_riff_raw['fmt ']['nSamplesPerSec'];
// }
}
if (!empty($thisfile_riff_raw['fmt ']['nAvgBytesPerSec'])) {
$thisfile_audio['bitrate'] = Helper::CastAsInt($thisfile_riff_raw['fmt ']['nAvgBytesPerSec'] * 8);
}
if (isset($thisfile_riff_WAVE['bext'][0]['data'])) {
// shortcut
$thisfile_riff_WAVE_bext_0 =& $thisfile_riff_WAVE['bext'][0];
$thisfile_riff_WAVE_bext_0['title'] = trim(substr($thisfile_riff_WAVE_bext_0['data'], 0, 256));
$thisfile_riff_WAVE_bext_0['author'] = trim(substr($thisfile_riff_WAVE_bext_0['data'], 256, 32));
$thisfile_riff_WAVE_bext_0['reference'] = trim(substr($thisfile_riff_WAVE_bext_0['data'], 288, 32));
$thisfile_riff_WAVE_bext_0['origin_date'] = substr($thisfile_riff_WAVE_bext_0['data'], 320, 10);
$thisfile_riff_WAVE_bext_0['origin_time'] = substr($thisfile_riff_WAVE_bext_0['data'], 330, 8);
$thisfile_riff_WAVE_bext_0['time_reference'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_bext_0['data'], 338, 8));
$thisfile_riff_WAVE_bext_0['bwf_version'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_bext_0['data'], 346, 1));
$thisfile_riff_WAVE_bext_0['reserved'] = substr($thisfile_riff_WAVE_bext_0['data'], 347, 254);
$thisfile_riff_WAVE_bext_0['coding_history'] = explode("\r\n", trim(substr($thisfile_riff_WAVE_bext_0['data'], 601)));
if (preg_match('#^([0-9]{4}).([0-9]{2}).([0-9]{2})$#', $thisfile_riff_WAVE_bext_0['origin_date'], $matches_bext_date)) {
if (preg_match('#^([0-9]{2}).([0-9]{2}).([0-9]{2})$#', $thisfile_riff_WAVE_bext_0['origin_time'], $matches_bext_time)) {
list($dummy, $bext_timestamp['year'], $bext_timestamp['month'], $bext_timestamp['day']) = $matches_bext_date;
list($dummy, $bext_timestamp['hour'], $bext_timestamp['minute'], $bext_timestamp['second']) = $matches_bext_time;
$thisfile_riff_WAVE_bext_0['origin_date_unix'] = gmmktime($bext_timestamp['hour'], $bext_timestamp['minute'], $bext_timestamp['second'], $bext_timestamp['month'], $bext_timestamp['day'], $bext_timestamp['year']);
} else {
$info['warning'][] = 'RIFF.WAVE.BEXT.origin_time is invalid';
}
} else {
$info['warning'][] = 'RIFF.WAVE.BEXT.origin_date is invalid';
}
$thisfile_riff['comments']['author'][] = $thisfile_riff_WAVE_bext_0['author'];
$thisfile_riff['comments']['title'][] = $thisfile_riff_WAVE_bext_0['title'];
}
if (isset($thisfile_riff_WAVE['MEXT'][0]['data'])) {
// shortcut
$thisfile_riff_WAVE_MEXT_0 =& $thisfile_riff_WAVE['MEXT'][0];
$thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_MEXT_0['data'], 0, 2));
$thisfile_riff_WAVE_MEXT_0['flags']['homogenous'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] & 0x1);
if ($thisfile_riff_WAVE_MEXT_0['flags']['homogenous']) {
$thisfile_riff_WAVE_MEXT_0['flags']['padding'] = $thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] & 0x2 ? false : true;
$thisfile_riff_WAVE_MEXT_0['flags']['22_or_44'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] & 0x4);
$thisfile_riff_WAVE_MEXT_0['flags']['free_format'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] & 0x8);
$thisfile_riff_WAVE_MEXT_0['nominal_frame_size'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_MEXT_0['data'], 2, 2));
}
$thisfile_riff_WAVE_MEXT_0['anciliary_data_length'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_MEXT_0['data'], 6, 2));
$thisfile_riff_WAVE_MEXT_0['raw']['anciliary_data_def'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_MEXT_0['data'], 8, 2));
$thisfile_riff_WAVE_MEXT_0['flags']['anciliary_data_left'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['anciliary_data_def'] & 0x1);
$thisfile_riff_WAVE_MEXT_0['flags']['anciliary_data_free'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['anciliary_data_def'] & 0x2);
$thisfile_riff_WAVE_MEXT_0['flags']['anciliary_data_right'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['anciliary_data_def'] & 0x4);
}
if (isset($thisfile_riff_WAVE['cart'][0]['data'])) {
// shortcut
$thisfile_riff_WAVE_cart_0 =& $thisfile_riff_WAVE['cart'][0];
$thisfile_riff_WAVE_cart_0['version'] = substr($thisfile_riff_WAVE_cart_0['data'], 0, 4);
$thisfile_riff_WAVE_cart_0['title'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 4, 64));
$thisfile_riff_WAVE_cart_0['artist'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 68, 64));
$thisfile_riff_WAVE_cart_0['cut_id'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 132, 64));
$thisfile_riff_WAVE_cart_0['client_id'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 196, 64));
$thisfile_riff_WAVE_cart_0['category'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 260, 64));
$thisfile_riff_WAVE_cart_0['classification'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 324, 64));
$thisfile_riff_WAVE_cart_0['out_cue'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 388, 64));
$thisfile_riff_WAVE_cart_0['start_date'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 452, 10));
$thisfile_riff_WAVE_cart_0['start_time'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 462, 8));
$thisfile_riff_WAVE_cart_0['end_date'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 470, 10));
$thisfile_riff_WAVE_cart_0['end_time'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 480, 8));
$thisfile_riff_WAVE_cart_0['producer_app_id'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 488, 64));
$thisfile_riff_WAVE_cart_0['producer_app_version'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 552, 64));
$thisfile_riff_WAVE_cart_0['user_defined_text'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 616, 64));
$thisfile_riff_WAVE_cart_0['zero_db_reference'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_cart_0['data'], 680, 4), true);
for ($i = 0; $i < 8; ++$i) {
$thisfile_riff_WAVE_cart_0['post_time'][$i]['usage_fourcc'] = substr($thisfile_riff_WAVE_cart_0['data'], 684 + $i * 8, 4);
$thisfile_riff_WAVE_cart_0['post_time'][$i]['timer_value'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_cart_0['data'], 684 + $i * 8 + 4, 4));
}
$thisfile_riff_WAVE_cart_0['url'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 748, 1024));
$thisfile_riff_WAVE_cart_0['tag_text'] = explode("\r\n", trim(substr($thisfile_riff_WAVE_cart_0['data'], 1772)));
$thisfile_riff['comments']['artist'][] = $thisfile_riff_WAVE_cart_0['artist'];
$thisfile_riff['comments']['title'][] = $thisfile_riff_WAVE_cart_0['title'];
}
if (isset($thisfile_riff_WAVE['SNDM'][0]['data'])) {
// SoundMiner metadata
// shortcuts
$thisfile_riff_WAVE_SNDM_0 =& $thisfile_riff_WAVE['SNDM'][0];
$thisfile_riff_WAVE_SNDM_0_data =& $thisfile_riff_WAVE_SNDM_0['data'];
$SNDM_startoffset = 0;
$SNDM_endoffset = $thisfile_riff_WAVE_SNDM_0['size'];
while ($SNDM_startoffset < $SNDM_endoffset) {
$SNDM_thisTagOffset = 0;
$SNDM_thisTagSize = Helper::BigEndian2Int(substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, 4));
$SNDM_thisTagOffset += 4;
$SNDM_thisTagKey = substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, 4);
$SNDM_thisTagOffset += 4;
$SNDM_thisTagDataSize = Helper::BigEndian2Int(substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, 2));
$SNDM_thisTagOffset += 2;
$SNDM_thisTagDataFlags = Helper::BigEndian2Int(substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, 2));
$SNDM_thisTagOffset += 2;
$SNDM_thisTagDataText = substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, $SNDM_thisTagDataSize);
$SNDM_thisTagOffset += $SNDM_thisTagDataSize;
if ($SNDM_thisTagSize != 4 + 4 + 2 + 2 + $SNDM_thisTagDataSize) {
$info['warning'][] = 'RIFF.WAVE.SNDM.data contains tag not expected length (expected: ' . $SNDM_thisTagSize . ', found: ' . (4 + 4 + 2 + 2 + $SNDM_thisTagDataSize) . ') at offset ' . $SNDM_startoffset . ' (file offset ' . ($thisfile_riff_WAVE_SNDM_0['offset'] + $SNDM_startoffset) . ')';
break;
} elseif ($SNDM_thisTagSize <= 0) {
$info['warning'][] = 'RIFF.WAVE.SNDM.data contains zero-size tag at offset ' . $SNDM_startoffset . ' (file offset ' . ($thisfile_riff_WAVE_SNDM_0['offset'] + $SNDM_startoffset) . ')';
break;
}
$SNDM_startoffset += $SNDM_thisTagSize;
$thisfile_riff_WAVE_SNDM_0['parsed_raw'][$SNDM_thisTagKey] = $SNDM_thisTagDataText;
if ($parsedkey = $this->RIFFwaveSNDMtagLookup($SNDM_thisTagKey)) {
$thisfile_riff_WAVE_SNDM_0['parsed'][$parsedkey] = $SNDM_thisTagDataText;
} else {
$info['warning'][] = 'RIFF.WAVE.SNDM contains unknown tag "' . $SNDM_thisTagKey . '" at offset ' . $SNDM_startoffset . ' (file offset ' . ($thisfile_riff_WAVE_SNDM_0['offset'] + $SNDM_startoffset) . ')';
}
}
$tagmapping = array('tracktitle' => 'title', 'category' => 'genre', 'cdtitle' => 'album', 'tracktitle' => 'title');
foreach ($tagmapping as $fromkey => $tokey) {
if (isset($thisfile_riff_WAVE_SNDM_0['parsed'][$fromkey])) {
$thisfile_riff['comments'][$tokey][] = $thisfile_riff_WAVE_SNDM_0['parsed'][$fromkey];
}
}
}
if (isset($thisfile_riff_WAVE['iXML'][0]['data'])) {
// requires functions simplexml_load_string and get_object_vars
if ($parsedXML = Helper::XML2array($thisfile_riff_WAVE['iXML'][0]['data'])) {
$thisfile_riff_WAVE['iXML'][0]['parsed'] = $parsedXML;
if (isset($parsedXML['SPEED']['MASTER_SPEED'])) {
@(list($numerator, $denominator) = explode('/', $parsedXML['SPEED']['MASTER_SPEED']));
$thisfile_riff_WAVE['iXML'][0]['master_speed'] = $numerator / ($denominator ? $denominator : 1000);
}
if (isset($parsedXML['SPEED']['TIMECODE_RATE'])) {
@(list($numerator, $denominator) = explode('/', $parsedXML['SPEED']['TIMECODE_RATE']));
$thisfile_riff_WAVE['iXML'][0]['timecode_rate'] = $numerator / ($denominator ? $denominator : 1000);
}
if (isset($parsedXML['SPEED']['TIMESTAMP_SAMPLES_SINCE_MIDNIGHT_LO']) && !empty($parsedXML['SPEED']['TIMESTAMP_SAMPLE_RATE']) && !empty($thisfile_riff_WAVE['iXML'][0]['timecode_rate'])) {
$samples_since_midnight = floatval(ltrim($parsedXML['SPEED']['TIMESTAMP_SAMPLES_SINCE_MIDNIGHT_HI'] . $parsedXML['SPEED']['TIMESTAMP_SAMPLES_SINCE_MIDNIGHT_LO'], '0'));
$thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] = $samples_since_midnight / $parsedXML['SPEED']['TIMESTAMP_SAMPLE_RATE'];
$h = floor($thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] / 3600);
$m = floor(($thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] - $h * 3600) / 60);
$s = floor($thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] - $h * 3600 - $m * 60);
$f = ($thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] - $h * 3600 - $m * 60 - $s) * $thisfile_riff_WAVE['iXML'][0]['timecode_rate'];
$thisfile_riff_WAVE['iXML'][0]['timecode_string'] = sprintf('%02d:%02d:%02d:%05.2f', $h, $m, $s, $f);
$thisfile_riff_WAVE['iXML'][0]['timecode_string_round'] = sprintf('%02d:%02d:%02d:%02d', $h, $m, $s, round($f));
}
unset($parsedXML);
}
}
if (!isset($thisfile_audio['bitrate']) && isset($thisfile_riff_audio[$streamindex]['bitrate'])) {
$thisfile_audio['bitrate'] = $thisfile_riff_audio[$streamindex]['bitrate'];
$info['playtime_seconds'] = (double) (($info['avdataend'] - $info['avdataoffset']) * 8 / $thisfile_audio['bitrate']);
}
if (!empty($info['wavpack'])) {
$thisfile_audio_dataformat = 'wavpack';
$thisfile_audio['bitrate_mode'] = 'vbr';
$thisfile_audio['encoder'] = 'WavPack v' . $info['wavpack']['version'];
// Reset to the way it was - RIFF parsing will have messed this up
$info['avdataend'] = $Original['avdataend'];
$thisfile_audio['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['playtime_seconds'];
fseek($this->getid3->fp, $info['avdataoffset'] - 44, SEEK_SET);
$RIFFdata = fread($this->getid3->fp, 44);
$OrignalRIFFheaderSize = Helper::LittleEndian2Int(substr($RIFFdata, 4, 4)) + 8;
$OrignalRIFFdataSize = Helper::LittleEndian2Int(substr($RIFFdata, 40, 4)) + 44;
if ($OrignalRIFFheaderSize > $OrignalRIFFdataSize) {
$info['avdataend'] -= $OrignalRIFFheaderSize - $OrignalRIFFdataSize;
fseek($this->getid3->fp, $info['avdataend'], SEEK_SET);
$RIFFdata .= fread($this->getid3->fp, $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);
$getid3_riff = new self($this->getid3);
$getid3_riff->ParseRIFFdata($RIFFdata);
unset($getid3_riff);
}
if (isset($thisfile_riff_raw['fmt ']['wFormatTag'])) {
switch ($thisfile_riff_raw['fmt ']['wFormatTag']) {
case 0x1:
// PCM
if (!empty($info['ac3'])) {
// Dolby Digital WAV files masquerade as PCM-WAV, but they're not
$thisfile_audio['wformattag'] = 0x2000;
$thisfile_audio['codec'] = $this->RIFFwFormatTagLookup($thisfile_audio['wformattag']);
$thisfile_audio['lossless'] = false;
$thisfile_audio['bitrate'] = $info['ac3']['bitrate'];
$thisfile_audio['sample_rate'] = $info['ac3']['sample_rate'];
}
break;
case 0x8ae:
// ClearJump LiteWave
$thisfile_audio['bitrate_mode'] = 'vbr';
$thisfile_audio_dataformat = 'litewave';
//typedef struct tagSLwFormat {
// WORD m_wCompFormat; // low byte defines compression method, high byte is compression flags
// DWORD m_dwScale; // scale factor for lossy compression
// DWORD m_dwBlockSize; // number of samples in encoded blocks
// WORD m_wQuality; // alias for the scale factor
// WORD m_wMarkDistance; // distance between marks in bytes
// WORD m_wReserved;
//
// //following paramters are ignored if CF_FILESRC is not set
// DWORD m_dwOrgSize; // original file size in bytes
// WORD m_bFactExists; // indicates if 'fact' chunk exists in the original file
// DWORD m_dwRiffChunkSize; // riff chunk size in the original file
//
// PCMWAVEFORMAT m_OrgWf; // original wave format
// }SLwFormat, *PSLwFormat;
// shortcut
$thisfile_riff['litewave']['raw'] = array();
$thisfile_riff_litewave =& $thisfile_riff['litewave'];
$thisfile_riff_litewave_raw =& $thisfile_riff_litewave['raw'];
$thisfile_riff_litewave_raw['compression_method'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 18, 1));
$thisfile_riff_litewave_raw['compression_flags'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 19, 1));
$thisfile_riff_litewave_raw['m_dwScale'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 20, 4));
$thisfile_riff_litewave_raw['m_dwBlockSize'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 24, 4));
$thisfile_riff_litewave_raw['m_wQuality'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 28, 2));
$thisfile_riff_litewave_raw['m_wMarkDistance'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 30, 2));
$thisfile_riff_litewave_raw['m_wReserved'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 32, 2));
$thisfile_riff_litewave_raw['m_dwOrgSize'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 34, 4));
$thisfile_riff_litewave_raw['m_bFactExists'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 38, 2));
$thisfile_riff_litewave_raw['m_dwRiffChunkSize'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 40, 4));
//$thisfile_riff_litewave['quality_factor'] = intval(round((2000 - $thisfile_riff_litewave_raw['m_dwScale']) / 20));
$thisfile_riff_litewave['quality_factor'] = $thisfile_riff_litewave_raw['m_wQuality'];
$thisfile_riff_litewave['flags']['raw_source'] = $thisfile_riff_litewave_raw['compression_flags'] & 0x1 ? false : true;
$thisfile_riff_litewave['flags']['vbr_blocksize'] = $thisfile_riff_litewave_raw['compression_flags'] & 0x2 ? false : true;
$thisfile_riff_litewave['flags']['seekpoints'] = (bool) ($thisfile_riff_litewave_raw['compression_flags'] & 0x4);
$thisfile_audio['lossless'] = $thisfile_riff_litewave_raw['m_wQuality'] == 100 ? true : false;
$thisfile_audio['encoder_options'] = '-q' . $thisfile_riff_litewave['quality_factor'];
break;
default:
break;
}
}
if ($info['avdataend'] > $info['filesize']) {
switch (!empty($thisfile_audio_dataformat) ? $thisfile_audio_dataformat : '') {
case 'wavpack':
// WavPack
// WavPack
case 'lpac':
// LPAC
// LPAC
case 'ofr':
// OptimFROG
// OptimFROG
case 'ofs':
// OptimFROG DualStream
// lossless compressed audio formats that keep original RIFF headers - skip warning
break;
case 'litewave':
if ($info['avdataend'] - $info['filesize'] == 1) {
// LiteWave appears to incorrectly *not* pad actual output file
// to nearest WORD boundary so may appear to be short by one
// byte, in which case - skip warning
} else {
// Short by more than one byte, throw warning
$info['warning'][] = 'Probably truncated file - expecting ' . $thisfile_riff[$RIFFsubtype]['data'][0]['size'] . ' bytes of data, only found ' . ($info['filesize'] - $info['avdataoffset']) . ' (short by ' . ($thisfile_riff[$RIFFsubtype]['data'][0]['size'] - ($info['filesize'] - $info['avdataoffset'])) . ' bytes)';
$info['avdataend'] = $info['filesize'];
}
break;
default:
if ($info['avdataend'] - $info['filesize'] == 1 && $thisfile_riff[$RIFFsubtype]['data'][0]['size'] % 2 == 0 && ($info['filesize'] - $info['avdataoffset']) % 2 == 1) {
// output file appears to be incorrectly *not* padded to nearest WORD boundary
// Output less severe warning
$info['warning'][] = 'File should probably be padded to nearest WORD boundary, but it is not (expecting ' . $thisfile_riff[$RIFFsubtype]['data'][0]['size'] . ' bytes of data, only found ' . ($info['filesize'] - $info['avdataoffset']) . ' therefore short by ' . ($thisfile_riff[$RIFFsubtype]['data'][0]['size'] - ($info['filesize'] - $info['avdataoffset'])) . ' bytes)';
$info['avdataend'] = $info['filesize'];
} else {
// Short by more than one byte, throw warning
$info['warning'][] = 'Probably truncated file - expecting ' . $thisfile_riff[$RIFFsubtype]['data'][0]['size'] . ' bytes of data, only found ' . ($info['filesize'] - $info['avdataoffset']) . ' (short by ' . ($thisfile_riff[$RIFFsubtype]['data'][0]['size'] - ($info['filesize'] - $info['avdataoffset'])) . ' bytes)';
$info['avdataend'] = $info['filesize'];
}
break;
}
}
if (!empty($info['mpeg']['audio']['LAME']['audio_bytes'])) {
if ($info['avdataend'] - $info['avdataoffset'] - $info['mpeg']['audio']['LAME']['audio_bytes'] == 1) {
--$info['avdataend'];
$info['warning'][] = 'Extra null byte at end of MP3 data assumed to be RIFF padding and therefore ignored';
}
}
if (isset($thisfile_audio_dataformat) && $thisfile_audio_dataformat == 'ac3') {
unset($thisfile_audio['bits_per_sample']);
if (!empty($info['ac3']['bitrate']) && $info['ac3']['bitrate'] != $thisfile_audio['bitrate']) {
$thisfile_audio['bitrate'] = $info['ac3']['bitrate'];
}
}
break;
case 'AVI ':
$thisfile_video['bitrate_mode'] = 'vbr';
// maybe not, but probably
$thisfile_video['dataformat'] = 'avi';
$info['mime_type'] = 'video/avi';
if (isset($thisfile_riff[$RIFFsubtype]['movi']['offset'])) {
$info['avdataoffset'] = $thisfile_riff[$RIFFsubtype]['movi']['offset'] + 8;
if (isset($thisfile_riff['AVIX'])) {
$info['avdataend'] = $thisfile_riff['AVIX'][count($thisfile_riff['AVIX']) - 1]['chunks']['movi']['offset'] + $thisfile_riff['AVIX'][count($thisfile_riff['AVIX']) - 1]['chunks']['movi']['size'];
} else {
$info['avdataend'] = $thisfile_riff['AVI ']['movi']['offset'] + $thisfile_riff['AVI ']['movi']['size'];
}
if ($info['avdataend'] > $info['filesize']) {
$info['warning'][] = 'Probably truncated file - expecting ' . ($info['avdataend'] - $info['avdataoffset']) . ' bytes of data, only found ' . ($info['filesize'] - $info['avdataoffset']) . ' (short by ' . ($info['avdataend'] - $info['filesize']) . ' bytes)';
$info['avdataend'] = $info['filesize'];
}
}
if (isset($thisfile_riff['AVI ']['hdrl']['strl']['indx'])) {
//$bIndexType = array(
// 0x00 => 'AVI_INDEX_OF_INDEXES',
// 0x01 => 'AVI_INDEX_OF_CHUNKS',
// 0x80 => 'AVI_INDEX_IS_DATA',
//);
//$bIndexSubtype = array(
// 0x01 => array(
// 0x01 => 'AVI_INDEX_2FIELD',
// ),
//);
foreach ($thisfile_riff['AVI ']['hdrl']['strl']['indx'] as $streamnumber => $steamdataarray) {
$thisfile_riff_avi_hdrl_strl_indx_stream_data =& $thisfile_riff['AVI ']['hdrl']['strl']['indx'][$streamnumber]['data'];
$thisfile_riff_raw['indx'][$streamnumber]['wLongsPerEntry'] = $this->EitherEndian2Int(substr($thisfile_riff_avi_hdrl_strl_indx_stream_data, 0, 2));
$thisfile_riff_raw['indx'][$streamnumber]['bIndexSubType'] = $this->EitherEndian2Int(substr($thisfile_riff_avi_hdrl_strl_indx_stream_data, 2, 1));
$thisfile_riff_raw['indx'][$streamnumber]['bIndexType'] = $this->EitherEndian2Int(substr($thisfile_riff_avi_hdrl_strl_indx_stream_data, 3, 1));
$thisfile_riff_raw['indx'][$streamnumber]['nEntriesInUse'] = $this->EitherEndian2Int(substr($thisfile_riff_avi_hdrl_strl_indx_stream_data, 4, 4));
$thisfile_riff_raw['indx'][$streamnumber]['dwChunkId'] = substr($thisfile_riff_avi_hdrl_strl_indx_stream_data, 8, 4);
$thisfile_riff_raw['indx'][$streamnumber]['dwReserved'] = $this->EitherEndian2Int(substr($thisfile_riff_avi_hdrl_strl_indx_stream_data, 12, 4));
//$thisfile_riff_raw['indx'][$streamnumber]['bIndexType_name'] = $bIndexType[$thisfile_riff_raw['indx'][$streamnumber]['bIndexType']];
//$thisfile_riff_raw['indx'][$streamnumber]['bIndexSubType_name'] = $bIndexSubtype[$thisfile_riff_raw['indx'][$streamnumber]['bIndexType']][$thisfile_riff_raw['indx'][$streamnumber]['bIndexSubType']];
unset($thisfile_riff_avi_hdrl_strl_indx_stream_data);
}
}
if (isset($thisfile_riff['AVI ']['hdrl']['avih'][$streamindex]['data'])) {
$avihData = $thisfile_riff['AVI ']['hdrl']['avih'][$streamindex]['data'];
// shortcut
$thisfile_riff_raw['avih'] = array();
$thisfile_riff_raw_avih =& $thisfile_riff_raw['avih'];
$thisfile_riff_raw_avih['dwMicroSecPerFrame'] = $this->EitherEndian2Int(substr($avihData, 0, 4));
// frame display rate (or 0L)
if ($thisfile_riff_raw_avih['dwMicroSecPerFrame'] == 0) {
$info['error'][] = 'Corrupt RIFF file: avih.dwMicroSecPerFrame == zero';
return false;
}
$thisfile_riff_raw_avih['dwMaxBytesPerSec'] = $this->EitherEndian2Int(substr($avihData, 4, 4));
// max. transfer rate
$thisfile_riff_raw_avih['dwPaddingGranularity'] = $this->EitherEndian2Int(substr($avihData, 8, 4));
// pad to multiples of this size; normally 2K.
$thisfile_riff_raw_avih['dwFlags'] = $this->EitherEndian2Int(substr($avihData, 12, 4));
// the ever-present flags
$thisfile_riff_raw_avih['dwTotalFrames'] = $this->EitherEndian2Int(substr($avihData, 16, 4));
// # frames in file
$thisfile_riff_raw_avih['dwInitialFrames'] = $this->EitherEndian2Int(substr($avihData, 20, 4));
$thisfile_riff_raw_avih['dwStreams'] = $this->EitherEndian2Int(substr($avihData, 24, 4));
$thisfile_riff_raw_avih['dwSuggestedBufferSize'] = $this->EitherEndian2Int(substr($avihData, 28, 4));
$thisfile_riff_raw_avih['dwWidth'] = $this->EitherEndian2Int(substr($avihData, 32, 4));
$thisfile_riff_raw_avih['dwHeight'] = $this->EitherEndian2Int(substr($avihData, 36, 4));
$thisfile_riff_raw_avih['dwScale'] = $this->EitherEndian2Int(substr($avihData, 40, 4));
$thisfile_riff_raw_avih['dwRate'] = $this->EitherEndian2Int(substr($avihData, 44, 4));
$thisfile_riff_raw_avih['dwStart'] = $this->EitherEndian2Int(substr($avihData, 48, 4));
$thisfile_riff_raw_avih['dwLength'] = $this->EitherEndian2Int(substr($avihData, 52, 4));
$thisfile_riff_raw_avih['flags']['hasindex'] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & 0x10);
$thisfile_riff_raw_avih['flags']['mustuseindex'] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & 0x20);
$thisfile_riff_raw_avih['flags']['interleaved'] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & 0x100);
$thisfile_riff_raw_avih['flags']['trustcktype'] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & 0x800);
$thisfile_riff_raw_avih['flags']['capturedfile'] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & 0x10000);
$thisfile_riff_raw_avih['flags']['copyrighted'] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & 0x20010);
// shortcut
$thisfile_riff_video[$streamindex] = array();
$thisfile_riff_video_current =& $thisfile_riff_video[$streamindex];
if ($thisfile_riff_raw_avih['dwWidth'] > 0) {
$thisfile_riff_video_current['frame_width'] = $thisfile_riff_raw_avih['dwWidth'];
$thisfile_video['resolution_x'] = $thisfile_riff_video_current['frame_width'];
}
if ($thisfile_riff_raw_avih['dwHeight'] > 0) {
$thisfile_riff_video_current['frame_height'] = $thisfile_riff_raw_avih['dwHeight'];
$thisfile_video['resolution_y'] = $thisfile_riff_video_current['frame_height'];
}
if ($thisfile_riff_raw_avih['dwTotalFrames'] > 0) {
$thisfile_riff_video_current['total_frames'] = $thisfile_riff_raw_avih['dwTotalFrames'];
$thisfile_video['total_frames'] = $thisfile_riff_video_current['total_frames'];
}
$thisfile_riff_video_current['frame_rate'] = round(1000000 / $thisfile_riff_raw_avih['dwMicroSecPerFrame'], 3);
$thisfile_video['frame_rate'] = $thisfile_riff_video_current['frame_rate'];
}
if (isset($thisfile_riff['AVI ']['hdrl']['strl']['strh'][0]['data'])) {
if (is_array($thisfile_riff['AVI ']['hdrl']['strl']['strh'])) {
for ($i = 0; $i < count($thisfile_riff['AVI ']['hdrl']['strl']['strh']); ++$i) {
if (isset($thisfile_riff['AVI ']['hdrl']['strl']['strh'][$i]['data'])) {
$strhData = $thisfile_riff['AVI ']['hdrl']['strl']['strh'][$i]['data'];
$strhfccType = substr($strhData, 0, 4);
if (isset($thisfile_riff['AVI ']['hdrl']['strl']['strf'][$i]['data'])) {
$strfData = $thisfile_riff['AVI ']['hdrl']['strl']['strf'][$i]['data'];
// shortcut
$thisfile_riff_raw_strf_strhfccType_streamindex =& $thisfile_riff_raw['strf'][$strhfccType][$streamindex];
switch ($strhfccType) {
case 'auds':
$thisfile_audio['bitrate_mode'] = 'cbr';
$thisfile_audio_dataformat = 'wav';
if (isset($thisfile_riff_audio) && is_array($thisfile_riff_audio)) {
$streamindex = count($thisfile_riff_audio);
}
$thisfile_riff_audio[$streamindex] = self::RIFFparseWAVEFORMATex($strfData);
$thisfile_audio['wformattag'] = $thisfile_riff_audio[$streamindex]['raw']['wFormatTag'];
// shortcut
$thisfile_audio['streams'][$streamindex] = $thisfile_riff_audio[$streamindex];
$thisfile_audio_streams_currentstream =& $thisfile_audio['streams'][$streamindex];
if ($thisfile_audio_streams_currentstream['bits_per_sample'] == 0) {
unset($thisfile_audio_streams_currentstream['bits_per_sample']);
}
$thisfile_audio_streams_currentstream['wformattag'] = $thisfile_audio_streams_currentstream['raw']['wFormatTag'];
unset($thisfile_audio_streams_currentstream['raw']);
// shortcut
$thisfile_riff_raw['strf'][$strhfccType][$streamindex] = $thisfile_riff_audio[$streamindex]['raw'];
unset($thisfile_riff_audio[$streamindex]['raw']);
$thisfile_audio = Helper::array_merge_noclobber($thisfile_audio, $thisfile_riff_audio[$streamindex]);
$thisfile_audio['lossless'] = false;
switch ($thisfile_riff_raw_strf_strhfccType_streamindex['wFormatTag']) {
case 0x1:
// PCM
$thisfile_audio_dataformat = 'wav';
$thisfile_audio['lossless'] = true;
break;
case 0x50:
// MPEG Layer 2 or Layer 1
$thisfile_audio_dataformat = 'mp2';
// Assume Layer-2
break;
case 0x55:
// MPEG Layer 3
$thisfile_audio_dataformat = 'mp3';
break;
case 0xff:
// AAC
$thisfile_audio_dataformat = 'aac';
break;
case 0x161:
// Windows Media v7 / v8 / v9
// Windows Media v7 / v8 / v9
case 0x162:
// Windows Media Professional v9
// Windows Media Professional v9
case 0x163:
// Windows Media Lossess v9
$thisfile_audio_dataformat = 'wma';
break;
case 0x2000:
// AC-3
$thisfile_audio_dataformat = 'ac3';
break;
case 0x2001:
// DTS
$thisfile_audio_dataformat = 'dts';
break;
default:
$thisfile_audio_dataformat = 'wav';
break;
}
$thisfile_audio_streams_currentstream['dataformat'] = $thisfile_audio_dataformat;
$thisfile_audio_streams_currentstream['lossless'] = $thisfile_audio['lossless'];
$thisfile_audio_streams_currentstream['bitrate_mode'] = $thisfile_audio['bitrate_mode'];
break;
case 'iavs':
case 'vids':
// shortcut
$thisfile_riff_raw['strh'][$i] = array();
$thisfile_riff_raw_strh_current =& $thisfile_riff_raw['strh'][$i];
$thisfile_riff_raw_strh_current['fccType'] = substr($strhData, 0, 4);
// same as $strhfccType;
$thisfile_riff_raw_strh_current['fccHandler'] = substr($strhData, 4, 4);
$thisfile_riff_raw_strh_current['dwFlags'] = $this->EitherEndian2Int(substr($strhData, 8, 4));
// Contains AVITF_* flags
$thisfile_riff_raw_strh_current['wPriority'] = $this->EitherEndian2Int(substr($strhData, 12, 2));
$thisfile_riff_raw_strh_current['wLanguage'] = $this->EitherEndian2Int(substr($strhData, 14, 2));
$thisfile_riff_raw_strh_current['dwInitialFrames'] = $this->EitherEndian2Int(substr($strhData, 16, 4));
$thisfile_riff_raw_strh_current['dwScale'] = $this->EitherEndian2Int(substr($strhData, 20, 4));
$thisfile_riff_raw_strh_current['dwRate'] = $this->EitherEndian2Int(substr($strhData, 24, 4));
$thisfile_riff_raw_strh_current['dwStart'] = $this->EitherEndian2Int(substr($strhData, 28, 4));
$thisfile_riff_raw_strh_current['dwLength'] = $this->EitherEndian2Int(substr($strhData, 32, 4));
$thisfile_riff_raw_strh_current['dwSuggestedBufferSize'] = $this->EitherEndian2Int(substr($strhData, 36, 4));
$thisfile_riff_raw_strh_current['dwQuality'] = $this->EitherEndian2Int(substr($strhData, 40, 4));
$thisfile_riff_raw_strh_current['dwSampleSize'] = $this->EitherEndian2Int(substr($strhData, 44, 4));
$thisfile_riff_raw_strh_current['rcFrame'] = $this->EitherEndian2Int(substr($strhData, 48, 4));
$thisfile_riff_video_current['codec'] = self::RIFFfourccLookup($thisfile_riff_raw_strh_current['fccHandler']);
$thisfile_video['fourcc'] = $thisfile_riff_raw_strh_current['fccHandler'];
if (!$thisfile_riff_video_current['codec'] && isset($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc']) && self::RIFFfourccLookup($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc'])) {
$thisfile_riff_video_current['codec'] = self::RIFFfourccLookup($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc']);
$thisfile_video['fourcc'] = $thisfile_riff_raw_strf_strhfccType_streamindex['fourcc'];
}
$thisfile_video['codec'] = $thisfile_riff_video_current['codec'];
$thisfile_video['pixel_aspect_ratio'] = (double) 1;
switch ($thisfile_riff_raw_strh_current['fccHandler']) {
case 'HFYU':
// Huffman Lossless Codec
// Huffman Lossless Codec
case 'IRAW':
// Intel YUV Uncompressed
// Intel YUV Uncompressed
case 'YUY2':
// Uncompressed YUV 4:2:2
$thisfile_video['lossless'] = true;
break;
default:
$thisfile_video['lossless'] = false;
break;
}
switch ($strhfccType) {
case 'vids':
$thisfile_riff_raw_strf_strhfccType_streamindex = self::ParseBITMAPINFOHEADER(substr($strfData, 0, 40), $info['fileformat'] == 'riff');
//echo '<pre>'.print_r($thisfile_riff_raw_strf_strhfccType_streamindex, true).'</pre>';
$thisfile_video['bits_per_sample'] = $thisfile_riff_raw_strf_strhfccType_streamindex['biBitCount'];
if ($thisfile_riff_video_current['codec'] == 'DV') {
$thisfile_riff_video_current['dv_type'] = 2;
}
break;
case 'iavs':
$thisfile_riff_video_current['dv_type'] = 1;
break;
}
break;
default:
$info['warning'][] = 'Unhandled fccType for stream (' . $i . '): "' . $strhfccType . '"';
break;
}
}
}
if (isset($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc'])) {
$thisfile_video['fourcc'] = $thisfile_riff_raw_strf_strhfccType_streamindex['fourcc'];
if (self::RIFFfourccLookup($thisfile_video['fourcc'])) {
$thisfile_riff_video_current['codec'] = self::RIFFfourccLookup($thisfile_video['fourcc']);
$thisfile_video['codec'] = $thisfile_riff_video_current['codec'];
}
switch ($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc']) {
case 'HFYU':
// Huffman Lossless Codec
// Huffman Lossless Codec
case 'IRAW':
// Intel YUV Uncompressed
// Intel YUV Uncompressed
case 'YUY2':
// Uncompressed YUV 4:2:2
$thisfile_video['lossless'] = true;
//$thisfile_video['bits_per_sample'] = 24;
break;
default:
$thisfile_video['lossless'] = false;
//$thisfile_video['bits_per_sample'] = 24;
break;
}
}
}
}
}
break;
case 'CDDA':
$thisfile_audio['bitrate_mode'] = 'cbr';
$thisfile_audio_dataformat = 'cda';
$thisfile_audio['lossless'] = true;
unset($info['mime_type']);
$info['avdataoffset'] = 44;
if (isset($thisfile_riff['CDDA']['fmt '][0]['data'])) {
// shortcut
$thisfile_riff_CDDA_fmt_0 =& $thisfile_riff['CDDA']['fmt '][0];
$thisfile_riff_CDDA_fmt_0['unknown1'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 0, 2));
$thisfile_riff_CDDA_fmt_0['track_num'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 2, 2));
$thisfile_riff_CDDA_fmt_0['disc_id'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 4, 4));
$thisfile_riff_CDDA_fmt_0['start_offset_frame'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 8, 4));
$thisfile_riff_CDDA_fmt_0['playtime_frames'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 12, 4));
$thisfile_riff_CDDA_fmt_0['unknown6'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 16, 4));
$thisfile_riff_CDDA_fmt_0['unknown7'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 20, 4));
$thisfile_riff_CDDA_fmt_0['start_offset_seconds'] = (double) $thisfile_riff_CDDA_fmt_0['start_offset_frame'] / 75;
$thisfile_riff_CDDA_fmt_0['playtime_seconds'] = (double) $thisfile_riff_CDDA_fmt_0['playtime_frames'] / 75;
$info['comments']['track'] = $thisfile_riff_CDDA_fmt_0['track_num'];
$info['playtime_seconds'] = $thisfile_riff_CDDA_fmt_0['playtime_seconds'];
// hardcoded data for CD-audio
$thisfile_audio['sample_rate'] = 44100;
$thisfile_audio['channels'] = 2;
$thisfile_audio['bits_per_sample'] = 16;
$thisfile_audio['bitrate'] = $thisfile_audio['sample_rate'] * $thisfile_audio['channels'] * $thisfile_audio['bits_per_sample'];
$thisfile_audio['bitrate_mode'] = 'cbr';
}
break;
case 'AIFF':
case 'AIFC':
$thisfile_audio['bitrate_mode'] = 'cbr';
$thisfile_audio_dataformat = 'aiff';
$thisfile_audio['lossless'] = true;
$info['mime_type'] = 'audio/x-aiff';
if (isset($thisfile_riff[$RIFFsubtype]['SSND'][0]['offset'])) {
$info['avdataoffset'] = $thisfile_riff[$RIFFsubtype]['SSND'][0]['offset'] + 8;
$info['avdataend'] = $info['avdataoffset'] + $thisfile_riff[$RIFFsubtype]['SSND'][0]['size'];
if ($info['avdataend'] > $info['filesize']) {
if ($info['avdataend'] == $info['filesize'] + 1 && $info['filesize'] % 2 == 1) {
// structures rounded to 2-byte boundary, but dumb encoders
// forget to pad end of file to make this actually work
} else {
$info['warning'][] = 'Probable truncated AIFF file: expecting ' . $thisfile_riff[$RIFFsubtype]['SSND'][0]['size'] . ' bytes of audio data, only ' . ($info['filesize'] - $info['avdataoffset']) . ' bytes found';
}
$info['avdataend'] = $info['filesize'];
}
}
if (isset($thisfile_riff[$RIFFsubtype]['COMM'][0]['data'])) {
// shortcut
$thisfile_riff_RIFFsubtype_COMM_0_data =& $thisfile_riff[$RIFFsubtype]['COMM'][0]['data'];
$thisfile_riff_audio['channels'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 0, 2), true);
$thisfile_riff_audio['total_samples'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 2, 4), false);
$thisfile_riff_audio['bits_per_sample'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 6, 2), true);
$thisfile_riff_audio['sample_rate'] = (int) Helper::BigEndian2Float(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 8, 10));
if ($thisfile_riff[$RIFFsubtype]['COMM'][0]['size'] > 18) {
$thisfile_riff_audio['codec_fourcc'] = substr($thisfile_riff_RIFFsubtype_COMM_0_data, 18, 4);
$CodecNameSize = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 22, 1), false);
$thisfile_riff_audio['codec_name'] = substr($thisfile_riff_RIFFsubtype_COMM_0_data, 23, $CodecNameSize);
switch ($thisfile_riff_audio['codec_name']) {
case 'NONE':
$thisfile_audio['codec'] = 'Pulse Code Modulation (PCM)';
$thisfile_audio['lossless'] = true;
break;
case '':
switch ($thisfile_riff_audio['codec_fourcc']) {
// http://developer.apple.com/qa/snd/snd07.html
case 'sowt':
$thisfile_riff_audio['codec_name'] = 'Two\'s Compliment Little-Endian PCM';
$thisfile_audio['lossless'] = true;
break;
case 'twos':
$thisfile_riff_audio['codec_name'] = 'Two\'s Compliment Big-Endian PCM';
$thisfile_audio['lossless'] = true;
break;
default:
break;
}
break;
default:
$thisfile_audio['codec'] = $thisfile_riff_audio['codec_name'];
$thisfile_audio['lossless'] = false;
break;
}
}
$thisfile_audio['channels'] = $thisfile_riff_audio['channels'];
if ($thisfile_riff_audio['bits_per_sample'] > 0) {
$thisfile_audio['bits_per_sample'] = $thisfile_riff_audio['bits_per_sample'];
}
$thisfile_audio['sample_rate'] = $thisfile_riff_audio['sample_rate'];
if ($thisfile_audio['sample_rate'] == 0) {
$info['error'][] = 'Corrupted AIFF file: sample_rate == zero';
return false;
}
$info['playtime_seconds'] = $thisfile_riff_audio['total_samples'] / $thisfile_audio['sample_rate'];
}
if (isset($thisfile_riff[$RIFFsubtype]['COMT'])) {
$offset = 0;
$CommentCount = Helper::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, 2), false);
$offset += 2;
for ($i = 0; $i < $CommentCount; ++$i) {
$info['comments_raw'][$i]['timestamp'] = Helper::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, 4), false);
$offset += 4;
$info['comments_raw'][$i]['marker_id'] = Helper::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, 2), true);
$offset += 2;
$CommentLength = Helper::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, 2), false);
$offset += 2;
$info['comments_raw'][$i]['comment'] = substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, $CommentLength);
$offset += $CommentLength;
$info['comments_raw'][$i]['timestamp_unix'] = Helper::DateMac2Unix($info['comments_raw'][$i]['timestamp']);
$thisfile_riff['comments']['comment'][] = $info['comments_raw'][$i]['comment'];
}
}
$CommentsChunkNames = array('NAME' => 'title', 'author' => 'artist', '(c) ' => 'copyright', 'ANNO' => 'comment');
foreach ($CommentsChunkNames as $key => $value) {
if (isset($thisfile_riff[$RIFFsubtype][$key][0]['data'])) {
$thisfile_riff['comments'][$value][] = $thisfile_riff[$RIFFsubtype][$key][0]['data'];
}
}
break;
case '8SVX':
$thisfile_audio['bitrate_mode'] = 'cbr';
$thisfile_audio_dataformat = '8svx';
$thisfile_audio['bits_per_sample'] = 8;
$thisfile_audio['channels'] = 1;
// overridden below, if need be
$info['mime_type'] = 'audio/x-aiff';
if (isset($thisfile_riff[$RIFFsubtype]['BODY'][0]['offset'])) {
$info['avdataoffset'] = $thisfile_riff[$RIFFsubtype]['BODY'][0]['offset'] + 8;
$info['avdataend'] = $info['avdataoffset'] + $thisfile_riff[$RIFFsubtype]['BODY'][0]['size'];
if ($info['avdataend'] > $info['filesize']) {
$info['warning'][] = 'Probable truncated AIFF file: expecting ' . $thisfile_riff[$RIFFsubtype]['BODY'][0]['size'] . ' bytes of audio data, only ' . ($info['filesize'] - $info['avdataoffset']) . ' bytes found';
}
}
if (isset($thisfile_riff[$RIFFsubtype]['VHDR'][0]['offset'])) {
// shortcut
$thisfile_riff_RIFFsubtype_VHDR_0 =& $thisfile_riff[$RIFFsubtype]['VHDR'][0];
$thisfile_riff_RIFFsubtype_VHDR_0['oneShotHiSamples'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 0, 4));
$thisfile_riff_RIFFsubtype_VHDR_0['repeatHiSamples'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 4, 4));
$thisfile_riff_RIFFsubtype_VHDR_0['samplesPerHiCycle'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 8, 4));
$thisfile_riff_RIFFsubtype_VHDR_0['samplesPerSec'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 12, 2));
$thisfile_riff_RIFFsubtype_VHDR_0['ctOctave'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 14, 1));
$thisfile_riff_RIFFsubtype_VHDR_0['sCompression'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 15, 1));
$thisfile_riff_RIFFsubtype_VHDR_0['Volume'] = Helper::FixedPoint16_16(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 16, 4));
$thisfile_audio['sample_rate'] = $thisfile_riff_RIFFsubtype_VHDR_0['samplesPerSec'];
switch ($thisfile_riff_RIFFsubtype_VHDR_0['sCompression']) {
case 0:
$thisfile_audio['codec'] = 'Pulse Code Modulation (PCM)';
$thisfile_audio['lossless'] = true;
$ActualBitsPerSample = 8;
break;
case 1:
$thisfile_audio['codec'] = 'Fibonacci-delta encoding';
$thisfile_audio['lossless'] = false;
$ActualBitsPerSample = 4;
break;
default:
$info['warning'][] = 'Unexpected sCompression value in 8SVX.VHDR chunk - expecting 0 or 1, found "' . sCompression . '"';
break;
}
}
if (isset($thisfile_riff[$RIFFsubtype]['CHAN'][0]['data'])) {
$ChannelsIndex = Helper::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['CHAN'][0]['data'], 0, 4));
switch ($ChannelsIndex) {
case 6:
// Stereo
$thisfile_audio['channels'] = 2;
break;
case 2:
// Left channel only
// Left channel only
case 4:
// Right channel only
$thisfile_audio['channels'] = 1;
break;
default:
$info['warning'][] = 'Unexpected value in 8SVX.CHAN chunk - expecting 2 or 4 or 6, found "' . $ChannelsIndex . '"';
break;
}
}
$CommentsChunkNames = array('NAME' => 'title', 'author' => 'artist', '(c) ' => 'copyright', 'ANNO' => 'comment');
foreach ($CommentsChunkNames as $key => $value) {
if (isset($thisfile_riff[$RIFFsubtype][$key][0]['data'])) {
$thisfile_riff['comments'][$value][] = $thisfile_riff[$RIFFsubtype][$key][0]['data'];
}
}
$thisfile_audio['bitrate'] = $thisfile_audio['sample_rate'] * $ActualBitsPerSample * $thisfile_audio['channels'];
if (!empty($thisfile_audio['bitrate'])) {
$info['playtime_seconds'] = ($info['avdataend'] - $info['avdataoffset']) / ($thisfile_audio['bitrate'] / 8);
}
break;
case 'CDXA':
$info['mime_type'] = 'video/mpeg';
if (!empty($thisfile_riff['CDXA']['data'][0]['size'])) {
if (class_exists('GetId3\\Module\\AudioVideo\\Mpeg')) {
$getid3_temp = new GetId3Core();
$getid3_temp->openfile($this->getid3->filename);
$getid3_mpeg = new Mpeg($getid3_temp);
$getid3_mpeg->analyze();
if (empty($getid3_temp->info['error'])) {
$info['audio'] = $getid3_temp->info['audio'];
$info['video'] = $getid3_temp->info['video'];
$info['mpeg'] = $getid3_temp->info['mpeg'];
$info['warning'] = $getid3_temp->info['warning'];
}
unset($getid3_temp, $getid3_mpeg);
}
}
break;
default:
$info['error'][] = 'Unknown RIFF type: expecting one of (WAVE|RMP3|AVI |CDDA|AIFF|AIFC|8SVX|CDXA), found "' . $RIFFsubtype . '" instead';
unset($info['fileformat']);
break;
}
switch ($RIFFsubtype) {
case 'WAVE':
case 'AIFF':
case 'AIFC':
if (isset($thisfile_riff[$RIFFsubtype]['ID3 ']) && !array_key_exists('id3 ', $thisfile_riff[$RIFFsubtype])) {
$info['warning'][] = 'mapping "ID3 " chunk to "id3 "';
}
if (isset($thisfile_riff[$RIFFsubtype]['tag ']) && !array_key_exists('id3 ', $thisfile_riff[$RIFFsubtype])) {
$info['warning'][] = 'mapping "tag " chunk to "id3 "';
}
if (isset($thisfile_riff[$RIFFsubtype]['id3 '])) {
$getid3_temp = new GetId3Core();
$getid3_temp->openfile($this->getid3->filename);
$getid3_id3v2 = new Id3v2($getid3_temp);
$getid3_id3v2->StartingOffset = $thisfile_riff[$RIFFsubtype]['id3 '][0]['offset'] + 8;
if ($thisfile_riff[$RIFFsubtype]['id3 '][0]['valid'] = $getid3_id3v2->analyze()) {
$info['id3v2'] = $getid3_temp->info['id3v2'];
}
unset($getid3_temp, $getid3_id3v2);
}
break;
}
if (isset($thisfile_riff_raw['fmt ']['wFormatTag']) && $thisfile_riff_raw['fmt ']['wFormatTag'] == 1) {
// http://www.mega-nerd.com/erikd/Blog/Windiots/dts.html
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$FirstFourBytes = fread($this->getid3->fp, 4);
if (preg_match('/^\\xFF\\x1F\\x00\\xE8/s', $FirstFourBytes)) {
// DTSWAV
$thisfile_audio_dataformat = 'dts';
} elseif (preg_match('/^\\x7F\\xFF\\x80\\x01/s', $FirstFourBytes)) {
// DTS, but this probably shouldn't happen
$thisfile_audio_dataformat = 'dts';
}
}
if (isset($thisfile_riff_WAVE['DISP']) && is_array($thisfile_riff_WAVE['DISP'])) {
$thisfile_riff['comments']['title'][] = trim(substr($thisfile_riff_WAVE['DISP'][count($thisfile_riff_WAVE['DISP']) - 1]['data'], 4));
}
if (isset($thisfile_riff_WAVE['INFO']) && is_array($thisfile_riff_WAVE['INFO'])) {
$this->RIFFcommentsParse($thisfile_riff_WAVE['INFO'], $thisfile_riff['comments']);
}
if (isset($thisfile_riff['AVI ']['INFO']) && is_array($thisfile_riff['AVI ']['INFO'])) {
$this->RIFFcommentsParse($thisfile_riff['AVI ']['INFO'], $thisfile_riff['comments']);
}
if (empty($thisfile_audio['encoder']) && !empty($info['mpeg']['audio']['LAME']['short_version'])) {
$thisfile_audio['encoder'] = $info['mpeg']['audio']['LAME']['short_version'];
}
if (!isset($info['playtime_seconds'])) {
$info['playtime_seconds'] = 0;
}
if (isset($thisfile_riff_raw['strh'][0]['dwLength']) && isset($thisfile_riff_raw['avih']['dwMicroSecPerFrame'])) {
// needed for >2GB AVIs where 'avih' chunk only lists number of frames in that chunk, not entire movie
$info['playtime_seconds'] = $thisfile_riff_raw['strh'][0]['dwLength'] * ($thisfile_riff_raw['avih']['dwMicroSecPerFrame'] / 1000000);
} elseif (isset($thisfile_riff_raw['avih']['dwTotalFrames']) && isset($thisfile_riff_raw['avih']['dwMicroSecPerFrame'])) {
$info['playtime_seconds'] = $thisfile_riff_raw['avih']['dwTotalFrames'] * ($thisfile_riff_raw['avih']['dwMicroSecPerFrame'] / 1000000);
}
if ($info['playtime_seconds'] > 0) {
if (isset($thisfile_riff_audio) && isset($thisfile_riff_video)) {
if (!isset($info['bitrate'])) {
$info['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
}
} elseif (isset($thisfile_riff_audio) && !isset($thisfile_riff_video)) {
if (!isset($thisfile_audio['bitrate'])) {
$thisfile_audio['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
}
} elseif (!isset($thisfile_riff_audio) && isset($thisfile_riff_video)) {
if (!isset($thisfile_video['bitrate'])) {
$thisfile_video['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
}
}
}
if (isset($thisfile_riff_video) && isset($thisfile_audio['bitrate']) && $thisfile_audio['bitrate'] > 0 && $info['playtime_seconds'] > 0) {
$info['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
$thisfile_audio['bitrate'] = 0;
$thisfile_video['bitrate'] = $info['bitrate'];
foreach ($thisfile_riff_audio as $channelnumber => $audioinfoarray) {
$thisfile_video['bitrate'] -= $audioinfoarray['bitrate'];
$thisfile_audio['bitrate'] += $audioinfoarray['bitrate'];
}
if ($thisfile_video['bitrate'] <= 0) {
unset($thisfile_video['bitrate']);
}
if ($thisfile_audio['bitrate'] <= 0) {
unset($thisfile_audio['bitrate']);
}
}
if (isset($info['mpeg']['audio'])) {
$thisfile_audio_dataformat = 'mp' . $info['mpeg']['audio']['layer'];
$thisfile_audio['sample_rate'] = $info['mpeg']['audio']['sample_rate'];
$thisfile_audio['channels'] = $info['mpeg']['audio']['channels'];
$thisfile_audio['bitrate'] = $info['mpeg']['audio']['bitrate'];
$thisfile_audio['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']);
if (!empty($info['mpeg']['audio']['codec'])) {
$thisfile_audio['codec'] = $info['mpeg']['audio']['codec'] . ' ' . $thisfile_audio['codec'];
}
if (!empty($thisfile_audio['streams'])) {
foreach ($thisfile_audio['streams'] as $streamnumber => $streamdata) {
if ($streamdata['dataformat'] == $thisfile_audio_dataformat) {
$thisfile_audio['streams'][$streamnumber]['sample_rate'] = $thisfile_audio['sample_rate'];
$thisfile_audio['streams'][$streamnumber]['channels'] = $thisfile_audio['channels'];
$thisfile_audio['streams'][$streamnumber]['bitrate'] = $thisfile_audio['bitrate'];
$thisfile_audio['streams'][$streamnumber]['bitrate_mode'] = $thisfile_audio['bitrate_mode'];
$thisfile_audio['streams'][$streamnumber]['codec'] = $thisfile_audio['codec'];
}
}
}
$getid3_mp3 = new Mp3($this->getid3);
$thisfile_audio['encoder_options'] = $getid3_mp3->GuessEncoderOptions();
unset($getid3_mp3);
}
if (!empty($thisfile_riff_raw['fmt ']['wBitsPerSample']) && $thisfile_riff_raw['fmt ']['wBitsPerSample'] > 0) {
switch ($thisfile_audio_dataformat) {
case 'ac3':
// ignore bits_per_sample
break;
default:
$thisfile_audio['bits_per_sample'] = $thisfile_riff_raw['fmt ']['wBitsPerSample'];
break;
}
}
if (empty($thisfile_riff_raw)) {
unset($thisfile_riff['raw']);
}
if (empty($thisfile_riff_audio)) {
unset($thisfile_riff['audio']);
}
if (empty($thisfile_riff_video)) {
unset($thisfile_riff['video']);
}
return true;
}
/**
* @return bool
*
* @link http://www.uni-jena.de/~pfk/mpp/sv8/header.html
*/
public function ParseMPCsv7()
{
// this is SV7
$info =& $this->getid3->info;
$thisfile_mpc_header =& $info['mpc']['header'];
$offset = 0;
$thisfile_mpc_header['size'] = 28;
$MPCheaderData = $info['mpc']['header']['preamble'];
$MPCheaderData .= fread($this->getid3->fp, $thisfile_mpc_header['size'] - strlen($info['mpc']['header']['preamble']));
$offset = strlen('MP+');
$StreamVersionByte = Helper::LittleEndian2Int(substr($MPCheaderData, $offset, 1));
$offset += 1;
$thisfile_mpc_header['stream_version_major'] = ($StreamVersionByte & 0xf) >> 0;
$thisfile_mpc_header['stream_version_minor'] = ($StreamVersionByte & 0xf0) >> 4;
// should always be 0, subversions no longer exist in SV8
$thisfile_mpc_header['frame_count'] = Helper::LittleEndian2Int(substr($MPCheaderData, $offset, 4));
$offset += 4;
if ($thisfile_mpc_header['stream_version_major'] != 7) {
$info['error'][] = 'Only Musepack SV7 supported (this file claims to be v' . $thisfile_mpc_header['stream_version_major'] . ')';
return false;
}
$FlagsDWORD1 = Helper::LittleEndian2Int(substr($MPCheaderData, $offset, 4));
$offset += 4;
$thisfile_mpc_header['intensity_stereo'] = (bool) (($FlagsDWORD1 & 0x80000000) >> 31);
$thisfile_mpc_header['mid_side_stereo'] = (bool) (($FlagsDWORD1 & 0x40000000) >> 30);
$thisfile_mpc_header['max_subband'] = ($FlagsDWORD1 & 0x3f000000) >> 24;
$thisfile_mpc_header['raw']['profile'] = ($FlagsDWORD1 & 0xf00000) >> 20;
$thisfile_mpc_header['begin_loud'] = (bool) (($FlagsDWORD1 & 0x80000) >> 19);
$thisfile_mpc_header['end_loud'] = (bool) (($FlagsDWORD1 & 0x40000) >> 18);
$thisfile_mpc_header['raw']['sample_rate'] = ($FlagsDWORD1 & 0x30000) >> 16;
$thisfile_mpc_header['max_level'] = $FlagsDWORD1 & 0xffff;
$thisfile_mpc_header['raw']['title_peak'] = Helper::LittleEndian2Int(substr($MPCheaderData, $offset, 2));
$offset += 2;
$thisfile_mpc_header['raw']['title_gain'] = Helper::LittleEndian2Int(substr($MPCheaderData, $offset, 2), true);
$offset += 2;
$thisfile_mpc_header['raw']['album_peak'] = Helper::LittleEndian2Int(substr($MPCheaderData, $offset, 2));
$offset += 2;
$thisfile_mpc_header['raw']['album_gain'] = Helper::LittleEndian2Int(substr($MPCheaderData, $offset, 2), true);
$offset += 2;
$FlagsDWORD2 = Helper::LittleEndian2Int(substr($MPCheaderData, $offset, 4));
$offset += 4;
$thisfile_mpc_header['true_gapless'] = (bool) (($FlagsDWORD2 & 0x80000000) >> 31);
$thisfile_mpc_header['last_frame_length'] = ($FlagsDWORD2 & 0x7ff00000) >> 20;
$thisfile_mpc_header['raw']['not_sure_what'] = Helper::LittleEndian2Int(substr($MPCheaderData, $offset, 3));
$offset += 3;
$thisfile_mpc_header['raw']['encoder_version'] = Helper::LittleEndian2Int(substr($MPCheaderData, $offset, 1));
$offset += 1;
$thisfile_mpc_header['profile'] = $this->MPCprofileNameLookup($thisfile_mpc_header['raw']['profile']);
$thisfile_mpc_header['sample_rate'] = $this->MPCfrequencyLookup($thisfile_mpc_header['raw']['sample_rate']);
if ($thisfile_mpc_header['sample_rate'] == 0) {
$info['error'][] = 'Corrupt MPC file: frequency == zero';
return false;
}
$info['audio']['sample_rate'] = $thisfile_mpc_header['sample_rate'];
$thisfile_mpc_header['samples'] = (($thisfile_mpc_header['frame_count'] - 1) * 1152 + $thisfile_mpc_header['last_frame_length']) * $info['audio']['channels'];
$info['playtime_seconds'] = $thisfile_mpc_header['samples'] / $info['audio']['channels'] / $info['audio']['sample_rate'];
if ($info['playtime_seconds'] == 0) {
$info['error'][] = 'Corrupt MPC file: playtime_seconds == zero';
return false;
}
// add size of file header to avdataoffset - calc bitrate correctly + MD5 data
$info['avdataoffset'] += $thisfile_mpc_header['size'];
$info['audio']['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['playtime_seconds'];
$thisfile_mpc_header['title_peak'] = $thisfile_mpc_header['raw']['title_peak'];
$thisfile_mpc_header['title_peak_db'] = $this->MPCpeakDBLookup($thisfile_mpc_header['title_peak']);
if ($thisfile_mpc_header['raw']['title_gain'] < 0) {
$thisfile_mpc_header['title_gain_db'] = (double) (32768 + $thisfile_mpc_header['raw']['title_gain']) / -100;
} else {
$thisfile_mpc_header['title_gain_db'] = (double) $thisfile_mpc_header['raw']['title_gain'] / 100;
}
$thisfile_mpc_header['album_peak'] = $thisfile_mpc_header['raw']['album_peak'];
$thisfile_mpc_header['album_peak_db'] = $this->MPCpeakDBLookup($thisfile_mpc_header['album_peak']);
if ($thisfile_mpc_header['raw']['album_gain'] < 0) {
$thisfile_mpc_header['album_gain_db'] = (double) (32768 + $thisfile_mpc_header['raw']['album_gain']) / -100;
} else {
$thisfile_mpc_header['album_gain_db'] = (double) $thisfile_mpc_header['raw']['album_gain'] / 100;
}
$thisfile_mpc_header['encoder_version'] = $this->MPCencoderVersionLookup($thisfile_mpc_header['raw']['encoder_version']);
$info['replay_gain']['track']['adjustment'] = $thisfile_mpc_header['title_gain_db'];
$info['replay_gain']['album']['adjustment'] = $thisfile_mpc_header['album_gain_db'];
if ($thisfile_mpc_header['title_peak'] > 0) {
$info['replay_gain']['track']['peak'] = $thisfile_mpc_header['title_peak'];
} elseif (round($thisfile_mpc_header['max_level'] * 1.18) > 0) {
$info['replay_gain']['track']['peak'] = Helper::CastAsInt(round($thisfile_mpc_header['max_level'] * 1.18));
// why? I don't know - see mppdec.c
}
if ($thisfile_mpc_header['album_peak'] > 0) {
$info['replay_gain']['album']['peak'] = $thisfile_mpc_header['album_peak'];
}
//$info['audio']['encoder'] = 'SV'.$thisfile_mpc_header['stream_version_major'].'.'.$thisfile_mpc_header['stream_version_minor'].', '.$thisfile_mpc_header['encoder_version'];
$info['audio']['encoder'] = $thisfile_mpc_header['encoder_version'];
$info['audio']['encoder_options'] = $thisfile_mpc_header['profile'];
$thisfile_mpc_header['quality'] = (double) ($thisfile_mpc_header['raw']['profile'] - 5);
// values can range from 0 to 15, of which 0..4 are "reserved/experimental", and 5..15 are mapped to qualities of 0.0 to 10.0
return true;
}
/**
* @return bool
*/
public function analyze()
{
$info =& $this->getid3->info;
// Overall tag structure:
// +-----------------------------+
// | Header (10 bytes) |
// +-----------------------------+
// | Extended Header |
// | (variable length, OPTIONAL) |
// +-----------------------------+
// | Frames (variable length) |
// +-----------------------------+
// | Padding |
// | (variable length, OPTIONAL) |
// +-----------------------------+
// | Footer (10 bytes, OPTIONAL) |
// +-----------------------------+
// Header
// ID3v2/file identifier "ID3"
// ID3v2 version $04 00
// ID3v2 flags (%ab000000 in v2.2, %abc00000 in v2.3, %abcd0000 in v2.4.x)
// ID3v2 size 4 * %0xxxxxxx
// shortcuts
$info['id3v2']['header'] = true;
$thisfile_id3v2 =& $info['id3v2'];
$thisfile_id3v2['flags'] = array();
$thisfile_id3v2_flags =& $thisfile_id3v2['flags'];
fseek($this->getid3->fp, $this->StartingOffset, SEEK_SET);
$header = fread($this->getid3->fp, 10);
if (substr($header, 0, 3) == 'ID3' && strlen($header) == 10) {
$thisfile_id3v2['majorversion'] = ord($header[3]);
$thisfile_id3v2['minorversion'] = ord($header[4]);
// shortcut
$id3v2_majorversion =& $thisfile_id3v2['majorversion'];
} else {
unset($info['id3v2']);
return false;
}
if ($id3v2_majorversion > 4) {
// this script probably won't correctly parse ID3v2.5.x and above (if it ever exists)
$info['error'][] = 'this script only parses up to ID3v2.4.x - this tag is ID3v2.' . $id3v2_majorversion . '.' . $thisfile_id3v2['minorversion'];
return false;
}
$id3_flags = ord($header[5]);
switch ($id3v2_majorversion) {
case 2:
// %ab000000 in v2.2
$thisfile_id3v2_flags['unsynch'] = (bool) ($id3_flags & 0x80);
// a - Unsynchronisation
$thisfile_id3v2_flags['compression'] = (bool) ($id3_flags & 0x40);
// b - Compression
break;
case 3:
// %abc00000 in v2.3
$thisfile_id3v2_flags['unsynch'] = (bool) ($id3_flags & 0x80);
// a - Unsynchronisation
$thisfile_id3v2_flags['exthead'] = (bool) ($id3_flags & 0x40);
// b - Extended header
$thisfile_id3v2_flags['experim'] = (bool) ($id3_flags & 0x20);
// c - Experimental indicator
break;
case 4:
// %abcd0000 in v2.4
$thisfile_id3v2_flags['unsynch'] = (bool) ($id3_flags & 0x80);
// a - Unsynchronisation
$thisfile_id3v2_flags['exthead'] = (bool) ($id3_flags & 0x40);
// b - Extended header
$thisfile_id3v2_flags['experim'] = (bool) ($id3_flags & 0x20);
// c - Experimental indicator
$thisfile_id3v2_flags['isfooter'] = (bool) ($id3_flags & 0x10);
// d - Footer present
break;
}
$thisfile_id3v2['headerlength'] = Helper::BigEndian2Int(substr($header, 6, 4), 1) + 10;
// length of ID3v2 tag in 10-byte header doesn't include 10-byte header length
$thisfile_id3v2['tag_offset_start'] = $this->StartingOffset;
$thisfile_id3v2['tag_offset_end'] = $thisfile_id3v2['tag_offset_start'] + $thisfile_id3v2['headerlength'];
// create 'encoding' key - used by GetId3Core::HandleAllTags()
// in ID3v2 every field can have it's own encoding type
// so force everything to UTF-8 so it can be handled consistantly
$thisfile_id3v2['encoding'] = 'UTF-8';
// Frames
// All ID3v2 frames consists of one frame header followed by one or more
// fields containing the actual information. The header is always 10
// bytes and laid out as follows:
//
// Frame ID $xx xx xx xx (four characters)
// Size 4 * %0xxxxxxx
// Flags $xx xx
$sizeofframes = $thisfile_id3v2['headerlength'] - 10;
// not including 10-byte initial header
if (!empty($thisfile_id3v2['exthead']['length'])) {
$sizeofframes -= $thisfile_id3v2['exthead']['length'] + 4;
}
if (!empty($thisfile_id3v2_flags['isfooter'])) {
$sizeofframes -= 10;
// footer takes last 10 bytes of ID3v2 header, after frame data, before audio
}
if ($sizeofframes > 0) {
$framedata = fread($this->getid3->fp, $sizeofframes);
// read all frames from file into $framedata variable
// if entire frame data is unsynched, de-unsynch it now (ID3v2.3.x)
if (!empty($thisfile_id3v2_flags['unsynch']) && $id3v2_majorversion <= 3) {
$framedata = $this->DeUnsynchronise($framedata);
}
// [in ID3v2.4.0] Unsynchronisation [S:6.1] is done on frame level, instead
// of on tag level, making it easier to skip frames, increasing the streamability
// of the tag. The unsynchronisation flag in the header [S:3.1] indicates that
// there exists an unsynchronised frame, while the new unsynchronisation flag in
// the frame header [S:4.1.2] indicates unsynchronisation.
//$framedataoffset = 10 + ($thisfile_id3v2['exthead']['length'] ? $thisfile_id3v2['exthead']['length'] + 4 : 0); // how many bytes into the stream - start from after the 10-byte header (and extended header length+4, if present)
$framedataoffset = 10;
// how many bytes into the stream - start from after the 10-byte header
// Extended Header
if (!empty($thisfile_id3v2_flags['exthead'])) {
$extended_header_offset = 0;
if ($id3v2_majorversion == 3) {
// v2.3 definition:
//Extended header size $xx xx xx xx // 32-bit integer
//Extended Flags $xx xx
// %x0000000 %00000000 // v2.3
// x - CRC data present
//Size of padding $xx xx xx xx
$thisfile_id3v2['exthead']['length'] = Helper::BigEndian2Int(substr($framedata, $extended_header_offset, 4), 0);
$extended_header_offset += 4;
$thisfile_id3v2['exthead']['flag_bytes'] = 2;
$thisfile_id3v2['exthead']['flag_raw'] = Helper::BigEndian2Int(substr($framedata, $extended_header_offset, $thisfile_id3v2['exthead']['flag_bytes']));
$extended_header_offset += $thisfile_id3v2['exthead']['flag_bytes'];
$thisfile_id3v2['exthead']['flags']['crc'] = (bool) ($thisfile_id3v2['exthead']['flag_raw'] & 0x8000);
$thisfile_id3v2['exthead']['padding_size'] = Helper::BigEndian2Int(substr($framedata, $extended_header_offset, 4));
$extended_header_offset += 4;
if ($thisfile_id3v2['exthead']['flags']['crc']) {
$thisfile_id3v2['exthead']['flag_data']['crc'] = Helper::BigEndian2Int(substr($framedata, $extended_header_offset, 4));
$extended_header_offset += 4;
}
$extended_header_offset += $thisfile_id3v2['exthead']['padding_size'];
} elseif ($id3v2_majorversion == 4) {
// v2.4 definition:
//Extended header size 4 * %0xxxxxxx // 28-bit synchsafe integer
//Number of flag bytes $01
//Extended Flags $xx
// %0bcd0000 // v2.4
// b - Tag is an update
// Flag data length $00
// c - CRC data present
// Flag data length $05
// Total frame CRC 5 * %0xxxxxxx
// d - Tag restrictions
// Flag data length $01
$thisfile_id3v2['exthead']['length'] = Helper::BigEndian2Int(substr($framedata, $extended_header_offset, 4), true);
$extended_header_offset += 4;
$thisfile_id3v2['exthead']['flag_bytes'] = Helper::BigEndian2Int(substr($framedata, $extended_header_offset, 1));
// should always be 1
$extended_header_offset += 1;
$thisfile_id3v2['exthead']['flag_raw'] = Helper::BigEndian2Int(substr($framedata, $extended_header_offset, $thisfile_id3v2['exthead']['flag_bytes']));
$extended_header_offset += $thisfile_id3v2['exthead']['flag_bytes'];
$thisfile_id3v2['exthead']['flags']['update'] = (bool) ($thisfile_id3v2['exthead']['flag_raw'] & 0x40);
$thisfile_id3v2['exthead']['flags']['crc'] = (bool) ($thisfile_id3v2['exthead']['flag_raw'] & 0x20);
$thisfile_id3v2['exthead']['flags']['restrictions'] = (bool) ($thisfile_id3v2['exthead']['flag_raw'] & 0x10);
if ($thisfile_id3v2['exthead']['flags']['update']) {
$ext_header_chunk_length = Helper::BigEndian2Int(substr($framedata, $extended_header_offset, 1));
// should be 0
$extended_header_offset += 1;
}
if ($thisfile_id3v2['exthead']['flags']['crc']) {
$ext_header_chunk_length = Helper::BigEndian2Int(substr($framedata, $extended_header_offset, 1));
// should be 5
$extended_header_offset += 1;
$thisfile_id3v2['exthead']['flag_data']['crc'] = Helper::BigEndian2Int(substr($framedata, $extended_header_offset, $ext_header_chunk_length), true, false);
$extended_header_offset += $ext_header_chunk_length;
}
if ($thisfile_id3v2['exthead']['flags']['restrictions']) {
$ext_header_chunk_length = Helper::BigEndian2Int(substr($framedata, $extended_header_offset, 1));
// should be 1
$extended_header_offset += 1;
// %ppqrrstt
$restrictions_raw = Helper::BigEndian2Int(substr($framedata, $extended_header_offset, 1));
$extended_header_offset += 1;
$thisfile_id3v2['exthead']['flags']['restrictions']['tagsize'] = ($restrictions_raw & 0xc0) >> 6;
// p - Tag size restrictions
$thisfile_id3v2['exthead']['flags']['restrictions']['textenc'] = ($restrictions_raw & 0x20) >> 5;
// q - Text encoding restrictions
$thisfile_id3v2['exthead']['flags']['restrictions']['textsize'] = ($restrictions_raw & 0x18) >> 3;
// r - Text fields size restrictions
$thisfile_id3v2['exthead']['flags']['restrictions']['imgenc'] = ($restrictions_raw & 0x4) >> 2;
// s - Image encoding restrictions
$thisfile_id3v2['exthead']['flags']['restrictions']['imgsize'] = ($restrictions_raw & 0x3) >> 0;
// t - Image size restrictions
$thisfile_id3v2['exthead']['flags']['restrictions_text']['tagsize'] = $this->LookupExtendedHeaderRestrictionsTagSizeLimits($thisfile_id3v2['exthead']['flags']['restrictions']['tagsize']);
$thisfile_id3v2['exthead']['flags']['restrictions_text']['textenc'] = $this->LookupExtendedHeaderRestrictionsTextEncodings($thisfile_id3v2['exthead']['flags']['restrictions']['textenc']);
$thisfile_id3v2['exthead']['flags']['restrictions_text']['textsize'] = $this->LookupExtendedHeaderRestrictionsTextFieldSize($thisfile_id3v2['exthead']['flags']['restrictions']['textsize']);
$thisfile_id3v2['exthead']['flags']['restrictions_text']['imgenc'] = $this->LookupExtendedHeaderRestrictionsImageEncoding($thisfile_id3v2['exthead']['flags']['restrictions']['imgenc']);
$thisfile_id3v2['exthead']['flags']['restrictions_text']['imgsize'] = $this->LookupExtendedHeaderRestrictionsImageSizeSize($thisfile_id3v2['exthead']['flags']['restrictions']['imgsize']);
}
if ($thisfile_id3v2['exthead']['length'] != $extended_header_offset) {
$info['warning'][] = 'ID3v2.4 extended header length mismatch (expecting ' . intval($thisfile_id3v2['exthead']['length']) . ', found ' . intval($extended_header_offset) . ')';
}
}
$framedataoffset += $extended_header_offset;
$framedata = substr($framedata, $extended_header_offset);
}
// end extended header
while (isset($framedata) && strlen($framedata) > 0) {
// cycle through until no more frame data is left to parse
if (strlen($framedata) <= $this->ID3v2HeaderLength($id3v2_majorversion)) {
// insufficient room left in ID3v2 header for actual data - must be padding
$thisfile_id3v2['padding']['start'] = $framedataoffset;
$thisfile_id3v2['padding']['length'] = strlen($framedata);
$thisfile_id3v2['padding']['valid'] = true;
for ($i = 0; $i < $thisfile_id3v2['padding']['length']; ++$i) {
if ($framedata[$i] != "") {
$thisfile_id3v2['padding']['valid'] = false;
$thisfile_id3v2['padding']['errorpos'] = $thisfile_id3v2['padding']['start'] + $i;
$info['warning'][] = 'Invalid ID3v2 padding found at offset ' . $thisfile_id3v2['padding']['errorpos'] . ' (the remaining ' . ($thisfile_id3v2['padding']['length'] - $i) . ' bytes are considered invalid)';
break;
}
}
break;
// skip rest of ID3v2 header
}
if ($id3v2_majorversion == 2) {
// Frame ID $xx xx xx (three characters)
// Size $xx xx xx (24-bit integer)
// Flags $xx xx
$frame_header = substr($framedata, 0, 6);
// take next 6 bytes for header
$framedata = substr($framedata, 6);
// and leave the rest in $framedata
$frame_name = substr($frame_header, 0, 3);
$frame_size = Helper::BigEndian2Int(substr($frame_header, 3, 3), 0);
$frame_flags = 0;
// not used for anything in ID3v2.2, just set to avoid E_NOTICEs
} elseif ($id3v2_majorversion > 2) {
// Frame ID $xx xx xx xx (four characters)
// Size $xx xx xx xx (32-bit integer in v2.3, 28-bit synchsafe in v2.4+)
// Flags $xx xx
$frame_header = substr($framedata, 0, 10);
// take next 10 bytes for header
$framedata = substr($framedata, 10);
// and leave the rest in $framedata
$frame_name = substr($frame_header, 0, 4);
if ($id3v2_majorversion == 3) {
$frame_size = Helper::BigEndian2Int(substr($frame_header, 4, 4), 0);
// 32-bit integer
} else {
// ID3v2.4+
$frame_size = Helper::BigEndian2Int(substr($frame_header, 4, 4), 1);
// 32-bit synchsafe integer (28-bit value)
}
if ($frame_size < strlen($framedata) + 4) {
$nextFrameID = substr($framedata, $frame_size, 4);
if ($this->IsValidID3v2FrameName($nextFrameID, $id3v2_majorversion)) {
// next frame is OK
} elseif ($frame_name == "" . 'MP3' || $frame_name == "" . 'MP' || $frame_name == ' MP3' || $frame_name == 'MP3e') {
// MP3ext known broken frames - "ok" for the purposes of this test
} elseif ($id3v2_majorversion == 4 && $this->IsValidID3v2FrameName(substr($framedata, Helper::BigEndian2Int(substr($frame_header, 4, 4), 0), 4), 3)) {
$info['warning'][] = 'ID3v2 tag written as ID3v2.4, but with non-synchsafe integers (ID3v2.3 style). Older versions of (Helium2; iTunes) are known culprits of this. Tag has been parsed as ID3v2.3';
$id3v2_majorversion = 3;
$frame_size = Helper::BigEndian2Int(substr($frame_header, 4, 4), 0);
// 32-bit integer
}
}
$frame_flags = Helper::BigEndian2Int(substr($frame_header, 8, 2));
}
if ($id3v2_majorversion == 2 && $frame_name == "" || $frame_name == "") {
// padding encountered
$thisfile_id3v2['padding']['start'] = $framedataoffset;
$thisfile_id3v2['padding']['length'] = strlen($frame_header) + strlen($framedata);
$thisfile_id3v2['padding']['valid'] = true;
$len = strlen($framedata);
for ($i = 0; $i < $len; ++$i) {
if ($framedata[$i] != "") {
$thisfile_id3v2['padding']['valid'] = false;
$thisfile_id3v2['padding']['errorpos'] = $thisfile_id3v2['padding']['start'] + $i;
$info['warning'][] = 'Invalid ID3v2 padding found at offset ' . $thisfile_id3v2['padding']['errorpos'] . ' (the remaining ' . ($thisfile_id3v2['padding']['length'] - $i) . ' bytes are considered invalid)';
break;
}
}
break;
// skip rest of ID3v2 header
}
if ($frame_name == 'COM ') {
$info['warning'][] = 'error parsing "' . $frame_name . '" (' . $framedataoffset . ' bytes into the ID3v2.' . $id3v2_majorversion . ' tag). (ERROR: IsValidID3v2FrameName("' . str_replace("", ' ', $frame_name) . '", ' . $id3v2_majorversion . '))). [Note: this particular error has been known to happen with tags edited by iTunes (versions "X v2.0.3", "v3.0.1" are known-guilty, probably others too)]';
$frame_name = 'COMM';
}
if ($frame_size <= strlen($framedata) && $this->IsValidID3v2FrameName($frame_name, $id3v2_majorversion)) {
unset($parsedFrame);
$parsedFrame['frame_name'] = $frame_name;
$parsedFrame['frame_flags_raw'] = $frame_flags;
$parsedFrame['data'] = substr($framedata, 0, $frame_size);
$parsedFrame['datalength'] = Helper::CastAsInt($frame_size);
$parsedFrame['dataoffset'] = $framedataoffset;
$this->ParseID3v2Frame($parsedFrame);
$thisfile_id3v2[$frame_name][] = $parsedFrame;
$framedata = substr($framedata, $frame_size);
} else {
// invalid frame length or FrameID
if ($frame_size <= strlen($framedata)) {
if ($this->IsValidID3v2FrameName(substr($framedata, $frame_size, 4), $id3v2_majorversion)) {
// next frame is valid, just skip the current frame
$framedata = substr($framedata, $frame_size);
$info['warning'][] = 'Next ID3v2 frame is valid, skipping current frame.';
} else {
// next frame is invalid too, abort processing
//unset($framedata);
$framedata = null;
$info['error'][] = 'Next ID3v2 frame is also invalid, aborting processing.';
}
} elseif ($frame_size == strlen($framedata)) {
// this is the last frame, just skip
$info['warning'][] = 'This was the last ID3v2 frame.';
} else {
// next frame is invalid too, abort processing
//unset($framedata);
$framedata = null;
$info['warning'][] = 'Invalid ID3v2 frame size, aborting.';
}
if (!$this->IsValidID3v2FrameName($frame_name, $id3v2_majorversion)) {
switch ($frame_name) {
case "" . 'MP':
case "" . 'MP3':
case ' MP3':
case 'MP3e':
case "" . 'MP':
case ' MP':
case 'MP3':
$info['warning'][] = 'error parsing "' . $frame_name . '" (' . $framedataoffset . ' bytes into the ID3v2.' . $id3v2_majorversion . ' tag). (ERROR: !IsValidID3v2FrameName("' . str_replace("", ' ', $frame_name) . '", ' . $id3v2_majorversion . '))). [Note: this particular error has been known to happen with tags edited by "MP3ext (www.mutschler.de/mp3ext/)"]';
break;
default:
$info['warning'][] = 'error parsing "' . $frame_name . '" (' . $framedataoffset . ' bytes into the ID3v2.' . $id3v2_majorversion . ' tag). (ERROR: !IsValidID3v2FrameName("' . str_replace("", ' ', $frame_name) . '", ' . $id3v2_majorversion . '))).';
break;
}
} elseif (!isset($framedata) || $frame_size > strlen($framedata)) {
$info['error'][] = 'error parsing "' . $frame_name . '" (' . $framedataoffset . ' bytes into the ID3v2.' . $id3v2_majorversion . ' tag). (ERROR: $frame_size (' . $frame_size . ') > strlen($framedata) (' . (isset($framedata) ? strlen($framedata) : 'null') . ')).';
} else {
$info['error'][] = 'error parsing "' . $frame_name . '" (' . $framedataoffset . ' bytes into the ID3v2.' . $id3v2_majorversion . ' tag).';
}
}
$framedataoffset += $frame_size + $this->ID3v2HeaderLength($id3v2_majorversion);
}
}
// Footer
// The footer is a copy of the header, but with a different identifier.
// ID3v2 identifier "3DI"
// ID3v2 version $04 00
// ID3v2 flags %abcd0000
// ID3v2 size 4 * %0xxxxxxx
if (isset($thisfile_id3v2_flags['isfooter']) && $thisfile_id3v2_flags['isfooter']) {
$footer = fread($this->getid3->fp, 10);
if (substr($footer, 0, 3) == '3DI') {
$thisfile_id3v2['footer'] = true;
$thisfile_id3v2['majorversion_footer'] = ord($footer[3]);
$thisfile_id3v2['minorversion_footer'] = ord($footer[4]);
}
if ($thisfile_id3v2['majorversion_footer'] <= 4) {
$id3_flags = ord(substr($footer[5]));
$thisfile_id3v2_flags['unsynch_footer'] = (bool) ($id3_flags & 0x80);
$thisfile_id3v2_flags['extfoot_footer'] = (bool) ($id3_flags & 0x40);
$thisfile_id3v2_flags['experim_footer'] = (bool) ($id3_flags & 0x20);
$thisfile_id3v2_flags['isfooter_footer'] = (bool) ($id3_flags & 0x10);
$thisfile_id3v2['footerlength'] = Helper::BigEndian2Int(substr($footer, 6, 4), 1);
}
}
// end footer
if (isset($thisfile_id3v2['comments']['genre'])) {
foreach ($thisfile_id3v2['comments']['genre'] as $key => $value) {
unset($thisfile_id3v2['comments']['genre'][$key]);
$thisfile_id3v2['comments'] = Helper::array_merge_noclobber($thisfile_id3v2['comments'], array('genre' => $this->ParseID3v2GenreString($value)));
}
}
if (isset($thisfile_id3v2['comments']['track'])) {
foreach ($thisfile_id3v2['comments']['track'] as $key => $value) {
if (strstr($value, '/')) {
list($thisfile_id3v2['comments']['tracknum'][$key], $thisfile_id3v2['comments']['totaltracks'][$key]) = explode('/', $thisfile_id3v2['comments']['track'][$key]);
}
}
}
if (!isset($thisfile_id3v2['comments']['year']) && !empty($thisfile_id3v2['comments']['recording_time'][0]) && preg_match('#^([0-9]{4})#', trim($thisfile_id3v2['comments']['recording_time'][0]), $matches)) {
$thisfile_id3v2['comments']['year'] = array($matches[1]);
}
if (!empty($thisfile_id3v2['TXXX'])) {
// MediaMonkey does this, maybe others: write a blank RGAD frame, but put replay-gain adjustment values in TXXX frames
foreach ($thisfile_id3v2['TXXX'] as $txxx_array) {
switch ($txxx_array['description']) {
case 'replaygain_track_gain':
if (empty($info['replay_gain']['track']['adjustment']) && !empty($txxx_array['data'])) {
$info['replay_gain']['track']['adjustment'] = floatval(trim(str_replace('dB', '', $txxx_array['data'])));
}
break;
case 'replaygain_track_peak':
if (empty($info['replay_gain']['track']['peak']) && !empty($txxx_array['data'])) {
$info['replay_gain']['track']['peak'] = floatval($txxx_array['data']);
}
break;
case 'replaygain_album_gain':
if (empty($info['replay_gain']['album']['adjustment']) && !empty($txxx_array['data'])) {
$info['replay_gain']['album']['adjustment'] = floatval(trim(str_replace('dB', '', $txxx_array['data'])));
}
break;
}
}
}
// Set avdataoffset
$info['avdataoffset'] = $thisfile_id3v2['headerlength'];
if (isset($thisfile_id3v2['footer'])) {
$info['avdataoffset'] += 10;
}
return true;
}
/**
* @param type $value
*
* @return type
*/
public function CastAsAppropriate($value)
{
if (is_array($value)) {
return $value;
} elseif (preg_match('#^[0-9]+/[0-9]+$#', $value)) {
return Helper::DecimalizeFraction($value);
} elseif (preg_match('#^[0-9]+$#', $value)) {
return Helper::CastAsInt($value);
} elseif (preg_match('#^[0-9\\.]+$#', $value)) {
return (double) $value;
}
return $value;
}
