function Analyze()
{
$info =& $this->getid3->info;
// http://www.matroska.org/technical/specs/index.html#EBMLBasics
$offset = $info['avdataoffset'];
$EBMLdata = '';
$EBMLdata_offset = $offset;
if (!getid3_lib::intValueSupported($info['avdataend'])) {
$this->warnings[] = 'This version of getID3() [' . $this->getid3->version() . '] may or may not correctly handle Matroska files larger than ' . round(PHP_INT_MAX / 1073741824) . 'GB';
}
while ($offset < $info['avdataend']) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$top_element_offset = $offset;
$top_element_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$top_element_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
if ($top_element_length === false) {
$this->warnings[] = 'invalid chunk length at ' . $top_element_offset;
$offset = PHP_INT_MAX + 1;
break;
}
$top_element_endoffset = $offset + $top_element_length;
switch ($top_element_id) {
case EBML_ID_EBML:
$info['fileformat'] = 'matroska';
$info['matroska']['header']['offset'] = $top_element_offset;
$info['matroska']['header']['length'] = $top_element_length;
while ($offset < $top_element_endoffset) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$element_data = array();
$element_data_offset = $offset;
$element_data['id'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$element_data['id_name'] = $this->EBMLidName($element_data['id']);
$element_data['length'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$end_offset = $offset + $element_data['length'];
switch ($element_data['id']) {
case EBML_ID_VOID:
// padding, ignore
break;
case EBML_ID_EBMLVERSION:
case EBML_ID_EBMLREADVERSION:
case EBML_ID_EBMLMAXIDLENGTH:
case EBML_ID_EBMLMAXSIZELENGTH:
case EBML_ID_DOCTYPEVERSION:
case EBML_ID_DOCTYPEREADVERSION:
$element_data['data'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $element_data['length']));
break;
case EBML_ID_DOCTYPE:
$element_data['data'] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $element_data['length']), "");
break;
case EBML_ID_CRC32:
// probably not useful, ignore
unset($element_data);
break;
default:
$this->warnings[] = 'Unhandled track.video element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $element_data['id'] . '::' . $element_data['id_name'] . ') at ' . $element_data_offset;
break;
}
$offset = $end_offset;
if (!empty($element_data)) {
$info['matroska']['header']['elements'][] = $element_data;
}
}
break;
case EBML_ID_SEGMENT:
$info['matroska']['segment'][0]['offset'] = $top_element_offset;
$info['matroska']['segment'][0]['length'] = $top_element_length;
$segment_key = -1;
while ($offset < $info['avdataend']) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$element_data = array();
$element_data['offset'] = $offset;
$element_data['id'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$element_data['id_name'] = $this->EBMLidName($element_data['id']);
$element_data['length'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
if ($element_data['length'] === false) {
$this->warnings[] = 'invalid chunk length at ' . $element_data['offset'];
//$offset = PHP_INT_MAX + 1;
$offset = $info['avdataend'];
break;
}
$element_end = $offset + $element_data['length'];
switch ($element_data['id']) {
//case EBML_ID_CLUSTER:
// // too many cluster entries, probably not useful
// break;
case false:
$this->warnings[] = 'invalid ID at ' . $element_data['offset'];
$offset = $element_end;
continue 3;
default:
$info['matroska']['segments'][] = $element_data;
break;
}
$segment_key++;
switch ($element_data['id']) {
case EBML_ID_SEEKHEAD:
// Contains the position of other level 1 elements
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$seek_entry = array();
$seek_entry['offset'] = $offset;
$seek_entry['id'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$seek_entry['id_name'] = $this->EBMLidName($seek_entry['id']);
$seek_entry['length'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$seek_end_offset = $offset + $seek_entry['length'];
switch ($seek_entry['id']) {
case EBML_ID_SEEK:
// Contains a single seek entry to an EBML element
while ($offset < $seek_end_offset) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$value = substr($EBMLdata, $offset - $EBMLdata_offset, $length);
$offset += $length;
switch ($id) {
case EBML_ID_SEEKID:
$dummy = 0;
$seek_entry['target_id'] = $this->readEBMLint($value, $dummy);
$seek_entry['target_name'] = $this->EBMLidName($seek_entry['target_id']);
break;
case EBML_ID_SEEKPOSITION:
$seek_entry['target_offset'] = $element_data['offset'] + getid3_lib::BigEndian2Int($value);
break;
case EBML_ID_CRC32:
// probably not useful, ignore
//$seek_entry['crc32'] = getid3_lib::PrintHexBytes($value, true, false, false);
unset($seek_entry);
break;
default:
$info['error'][] = 'Unhandled segment [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $id . ') at ' . $offset;
break;
}
}
if (!empty($seek_entry)) {
$info['matroska']['seek'][] = $seek_entry;
}
//switch ($seek_entry['target_id']) {
// case EBML_ID_CLUSTER:
// // too many cluster seek points, probably not useful
// break;
// default:
// $info['matroska']['seek'][] = $seek_entry;
// break;
//}
break;
case EBML_ID_CRC32:
// probably not useful, ignore
break;
default:
$this->warnings[] = 'Unhandled seekhead element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $seek_entry['id'] . '::' . $seek_entry['id_name'] . ') at ' . $offset;
break;
}
$offset = $seek_end_offset;
}
break;
case EBML_ID_TRACKS:
// information about all tracks in segment
$info['matroska']['tracks'] = $element_data;
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$track_entry = array();
$track_entry['offset'] = $offset;
$track_entry['id'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$track_entry['id_name'] = $this->EBMLidName($track_entry['id']);
$track_entry['length'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$track_entry_endoffset = $offset + $track_entry['length'];
// $track_entry['offset'] is not the same as $offset, even though they were set equal a few lines up: $offset has been automagically incremented by readEMLint()
switch ($track_entry['id']) {
case EBML_ID_TRACKENTRY:
//subelements: Describes a track with all elements.
while ($offset < $track_entry_endoffset) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
switch ($subelement_id) {
case EBML_ID_TRACKNUMBER:
case EBML_ID_TRACKUID:
case EBML_ID_TRACKTYPE:
case EBML_ID_MINCACHE:
case EBML_ID_MAXCACHE:
case EBML_ID_MAXBLOCKADDITIONID:
case EBML_ID_DEFAULTDURATION:
// nanoseconds per frame
$track_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
break;
case EBML_ID_TRACKTIMECODESCALE:
$track_entry[$subelement_idname] = getid3_lib::BigEndian2Float(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
break;
case EBML_ID_CODECID:
case EBML_ID_LANGUAGE:
case EBML_ID_NAME:
case EBML_ID_CODECNAME:
case EBML_ID_CODECPRIVATE:
$track_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "");
break;
// thought maybe it was a nice wFormatTag entry, but it's not :(
//case EBML_ID_CODECPRIVATE:
//$track_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "\x00");
//if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, false)) {
// $track_entry[$subelement_idname.'_decoded'] = getid3_riff::RIFFparseWAVEFORMATex($track_entry[$subelement_idname]);
// if (isset($track_entry[$subelement_idname.'_decoded']['raw']['wFormatTag'])) {
// }
//} else {
// $this->warnings[] = 'failed to include "module.audio-video.riff.php" for parsing codec private data';
//}
//break;
// thought maybe it was a nice wFormatTag entry, but it's not :(
//case EBML_ID_CODECPRIVATE:
//$track_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "\x00");
//if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, false)) {
// $track_entry[$subelement_idname.'_decoded'] = getid3_riff::RIFFparseWAVEFORMATex($track_entry[$subelement_idname]);
// if (isset($track_entry[$subelement_idname.'_decoded']['raw']['wFormatTag'])) {
// }
//} else {
// $this->warnings[] = 'failed to include "module.audio-video.riff.php" for parsing codec private data';
//}
//break;
case EBML_ID_FLAGENABLED:
case EBML_ID_FLAGDEFAULT:
case EBML_ID_FLAGFORCED:
case EBML_ID_FLAGLACING:
case EBML_ID_CODECDECODEALL:
$track_entry[$subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
break;
case EBML_ID_VIDEO:
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_PIXELWIDTH:
case EBML_ID_PIXELHEIGHT:
case EBML_ID_STEREOMODE:
case EBML_ID_PIXELCROPBOTTOM:
case EBML_ID_PIXELCROPTOP:
case EBML_ID_PIXELCROPLEFT:
case EBML_ID_PIXELCROPRIGHT:
case EBML_ID_DISPLAYWIDTH:
case EBML_ID_DISPLAYHEIGHT:
case EBML_ID_DISPLAYUNIT:
case EBML_ID_ASPECTRATIOTYPE:
$track_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_FLAGINTERLACED:
$track_entry[$sub_subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_GAMMAVALUE:
$track_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Float(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_COLOURSPACE:
$track_entry[$sub_subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length), "");
break;
default:
$this->warnings[] = 'Unhandled track.video element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
if (isset($track_entry[$this->EBMLidName(EBML_ID_CODECID)]) && $track_entry[$this->EBMLidName(EBML_ID_CODECID)] == 'V_MS/VFW/FOURCC' && isset($track_entry[$this->EBMLidName(EBML_ID_CODECPRIVATE)])) {
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio-video.riff.php', __FILE__, false)) {
$track_entry['codec_private_parsed'] = getid3_riff::ParseBITMAPINFOHEADER($track_entry[$this->EBMLidName(EBML_ID_CODECPRIVATE)]);
} else {
$this->warnings[] = 'Unable to parse codec private data [' . basename(__FILE__) . ':' . __LINE__ . '] because cannot include "module.audio-video.riff.php"';
}
}
break;
case EBML_ID_AUDIO:
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_CHANNELS:
case EBML_ID_BITDEPTH:
$track_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_SAMPLINGFREQUENCY:
case EBML_ID_OUTPUTSAMPLINGFREQUENCY:
$track_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Float(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_CHANNELPOSITIONS:
$track_entry[$sub_subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length), "");
break;
default:
$this->warnings[] = 'Unhandled track.audio element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
break;
case EBML_ID_CONTENTENCODINGS:
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_CONTENTENCODING:
while ($offset < $sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_offset = $offset;
$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
switch ($sub_sub_subelement_id) {
case EBML_ID_CONTENTENCODINGORDER:
case EBML_ID_CONTENTENCODINGSCOPE:
case EBML_ID_CONTENTENCODINGTYPE:
$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
break;
case EBML_ID_CONTENTCOMPRESSION:
while ($offset < $sub_sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_offset = $offset;
$sub_sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_end = $offset + $sub_sub_sub_subelement_length;
switch ($sub_sub_sub_subelement_id) {
case EBML_ID_CONTENTCOMPALGO:
$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname][$sub_sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length));
break;
case EBML_ID_CONTENTCOMPSETTINGS:
$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname][$sub_sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length);
break;
default:
$this->warnings[] = 'Unhandled track.contentencodings.contentencoding.contentcompression element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $sub_sub_sub_subelement_end;
}
break;
case EBML_ID_CONTENTENCRYPTION:
while ($offset < $sub_sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_offset = $offset;
$sub_sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_end = $offset + $sub_sub_sub_subelement_length;
switch ($sub_sub_sub_subelement_id) {
case EBML_ID_CONTENTENCALGO:
case EBML_ID_CONTENTSIGALGO:
case EBML_ID_CONTENTSIGHASHALGO:
$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname][$sub_sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length));
break;
case EBML_ID_CONTENTENCKEYID:
case EBML_ID_CONTENTSIGNATURE:
case EBML_ID_CONTENTSIGKEYID:
$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname][$sub_sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length);
break;
default:
$this->warnings[] = 'Unhandled track.contentencodings.contentencoding.contentcompression element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $sub_sub_sub_subelement_end;
}
break;
default:
$this->warnings[] = 'Unhandled track.contentencodings.contentencoding element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $sub_sub_subelement_end;
}
break;
default:
$this->warnings[] = 'Unhandled track.contentencodings element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
break;
case EBML_ID_CRC32:
// probably not useful, ignore
break;
default:
$this->warnings[] = 'Unhandled track element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $subelement_end;
}
break;
case EBML_ID_CRC32:
// probably not useful, ignore
$offset = $track_entry_endoffset;
break;
default:
$this->warnings[] = 'Unhandled track element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $track_entry['id'] . '::' . $track_entry['id_name'] . ') at ' . $track_entry['offset'];
$offset = $track_entry_endoffset;
break;
}
$info['matroska']['tracks']['tracks'][] = $track_entry;
}
break;
case EBML_ID_INFO:
// Contains the position of other level 1 elements
$info_entry = array();
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
switch ($subelement_id) {
case EBML_ID_CHAPTERTRANSLATEEDITIONUID:
case EBML_ID_CHAPTERTRANSLATECODEC:
case EBML_ID_TIMECODESCALE:
$info_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
break;
case EBML_ID_DURATION:
$info_entry[$subelement_idname] = getid3_lib::BigEndian2Float(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
break;
case EBML_ID_DATEUTC:
$info_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
$info_entry[$subelement_idname . '_unix'] = $this->EBMLdate2unix($info_entry[$subelement_idname]);
break;
case EBML_ID_SEGMENTUID:
case EBML_ID_PREVUID:
case EBML_ID_NEXTUID:
case EBML_ID_SEGMENTFAMILY:
case EBML_ID_CHAPTERTRANSLATEID:
$info_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "");
break;
case EBML_ID_SEGMENTFILENAME:
case EBML_ID_PREVFILENAME:
case EBML_ID_NEXTFILENAME:
case EBML_ID_TITLE:
case EBML_ID_MUXINGAPP:
case EBML_ID_WRITINGAPP:
$info_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "");
$info['matroska']['comments'][strtolower($subelement_idname)][] = $info_entry[$subelement_idname];
break;
case EBML_ID_CRC32:
// probably not useful, ignore
break;
default:
$this->warnings[] = 'Unhandled info element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $subelement_end;
}
$info['matroska']['info'][] = $info_entry;
break;
case EBML_ID_CUES:
$cues_entry = array();
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
switch ($subelement_id) {
case EBML_ID_CUEPOINT:
$cuepoint_entry = array();
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_CUETRACKPOSITIONS:
while ($offset < $sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_offset = $offset;
$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
switch ($sub_sub_subelement_id) {
case EBML_ID_CUETRACK:
$cuepoint_entry[$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled cues.cuepoint.cuetrackpositions element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_sub_subelement_id . '::' . $sub_sub_subelement_idname . ') at ' . $sub_sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
break;
case EBML_ID_CUETIME:
$cuepoint_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled cues.cuepoint element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
$cues_entry[] = $cuepoint_entry;
$offset = $sub_subelement_end;
break;
case EBML_ID_CRC32:
// probably not useful, ignore
break;
default:
$this->warnings[] = 'Unhandled cues element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $subelement_end;
}
$info['matroska']['cues'] = $cues_entry;
break;
case EBML_ID_TAGS:
$tags_entry = array();
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
$tag_entry = array();
switch ($subelement_id) {
case EBML_ID_WRITINGAPP:
$tag_entry[$subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length);
break;
case EBML_ID_TAG:
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_TARGETS:
$targets_entry = array();
while ($offset < $sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_offset = $offset;
$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
switch ($sub_sub_subelement_id) {
case EBML_ID_TARGETTYPEVALUE:
$targets_entry[$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
$targets_entry[strtolower($sub_sub_subelement_idname) . '_long'] = $this->MatroskaTargetTypeValue($targets_entry[$sub_sub_subelement_idname]);
break;
case EBML_ID_EDITIONUID:
case EBML_ID_CHAPTERUID:
case EBML_ID_ATTACHMENTUID:
case EBML_ID_TAGTRACKUID:
case EBML_ID_TAGCHAPTERUID:
$targets_entry[$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled tag.targets element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_sub_subelement_id . '::' . $sub_sub_subelement_idname . ') at ' . $sub_sub_subelement_offset;
break;
}
$offset = $sub_sub_subelement_end;
}
$tag_entry[$sub_subelement_idname][] = $targets_entry;
break;
case EBML_ID_SIMPLETAG:
//$tag_entry[$sub_subelement_idname][] = $simpletag_entry;
$tag_entry[$sub_subelement_idname][] = $this->Handle_EMBL_ID_SIMPLETAG($offset, $sub_subelement_end);
break;
case EBML_ID_TARGETTYPE:
$tag_entry[$sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length);
break;
case EBML_ID_TRACKUID:
$tag_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled tags.tag element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
$offset = $sub_subelement_end;
break;
case EBML_ID_CRC32:
// probably not useful, ignore
break;
default:
$this->warnings[] = 'Unhandled tags element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$tags_entry['tags'][] = $tag_entry;
$offset = $subelement_end;
}
$info['matroska']['tags'] = $tags_entry['tags'];
break;
case EBML_ID_ATTACHMENTS:
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
switch ($subelement_id) {
case EBML_ID_ATTACHEDFILE:
$attachedfile_entry = array();
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_FILEDESCRIPTION:
case EBML_ID_FILENAME:
case EBML_ID_FILEMIMETYPE:
$attachedfile_entry[$sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length);
break;
case EBML_ID_FILEDATA:
$attachedfile_entry['data_offset'] = $offset;
$attachedfile_entry['data_length'] = $sub_subelement_length;
do {
if ($this->inline_attachments === false) {
// skip entirely
break;
}
if ($this->inline_attachments === true) {
// great
} elseif (is_int($this->inline_attachments)) {
if ($this->inline_attachments < $sub_subelement_length) {
// too big, skip
$this->warnings[] = 'attachment at ' . $sub_subelement_offset . ' is too large to process inline (' . number_format($sub_subelement_length) . ' bytes)';
break;
}
} elseif (is_string($this->inline_attachments)) {
$this->inline_attachments = rtrim(str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $this->inline_attachments), DIRECTORY_SEPARATOR);
if (!is_dir($this->inline_attachments) || !is_writable($this->inline_attachments)) {
// cannot write, skip
$this->warnings[] = 'attachment at ' . $sub_subelement_offset . ' cannot be saved to "' . $this->inline_attachments . '" (not writable)';
break;
}
}
// if we get this far, must be OK
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset, $sub_subelement_length);
$attachedfile_entry[$sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length);
if (is_string($this->inline_attachments)) {
$destination_filename = $this->inline_attachments . DIRECTORY_SEPARATOR . md5($info['filenamepath']) . '_' . $attachedfile_entry['data_offset'];
if (!file_exists($destination_filename) || is_writable($destination_filename)) {
file_put_contents($destination_filename, $attachedfile_entry[$sub_subelement_idname]);
} else {
$this->warnings[] = 'attachment at ' . $sub_subelement_offset . ' cannot be saved to "' . $destination_filename . '" (not writable)';
}
$attachedfile_entry[$sub_subelement_idname . '_filename'] = $destination_filename;
unset($attachedfile_entry[$sub_subelement_idname]);
}
} while (false);
break;
case EBML_ID_FILEUID:
$attachedfile_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled attachment.attachedfile element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
if (!empty($attachedfile_entry[$this->EBMLidName(EBML_ID_FILEDATA)]) && !empty($attachedfile_entry[$this->EBMLidName(EBML_ID_FILEMIMETYPE)]) && preg_match('#^image/#i', $attachedfile_entry[$this->EBMLidName(EBML_ID_FILEMIMETYPE)])) {
if ($this->inline_attachments === true || is_int($this->inline_attachments) && $this->inline_attachments >= strlen($attachedfile_entry[$this->EBMLidName(EBML_ID_FILEDATA)])) {
$attachedfile_entry['data'] = $attachedfile_entry[$this->EBMLidName(EBML_ID_FILEDATA)];
$attachedfile_entry['image_mime'] = $attachedfile_entry[$this->EBMLidName(EBML_ID_FILEMIMETYPE)];
$info['matroska']['comments']['picture'][] = array('data' => $attachedfile_entry['data'], 'image_mime' => $attachedfile_entry['image_mime'], 'filename' => !empty($attachedfile_entry[$this->EBMLidName(EBML_ID_FILENAME)]) ? $attachedfile_entry[$this->EBMLidName(EBML_ID_FILENAME)] : '');
unset($attachedfile_entry[$this->EBMLidName(EBML_ID_FILEDATA)], $attachedfile_entry[$this->EBMLidName(EBML_ID_FILEMIMETYPE)]);
}
}
if (!empty($attachedfile_entry['image_mime']) && preg_match('#^image/#i', $attachedfile_entry['image_mime'])) {
// don't add a second copy of attached images, which are grouped under the standard location [comments][picture]
} else {
$info['matroska']['attachments'][] = $attachedfile_entry;
}
$offset = $sub_subelement_end;
break;
case EBML_ID_CRC32:
// probably not useful, ignore
break;
default:
$this->warnings[] = 'Unhandled tags element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $subelement_end;
}
break;
case EBML_ID_CHAPTERS:
// not important to us, contains mostly actual audio/video data, ignore
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
switch ($subelement_id) {
case EBML_ID_EDITIONENTRY:
$editionentry_entry = array();
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_EDITIONUID:
$editionentry_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_EDITIONFLAGHIDDEN:
case EBML_ID_EDITIONFLAGDEFAULT:
case EBML_ID_EDITIONFLAGORDERED:
$editionentry_entry[$sub_subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_CHAPTERATOM:
$chapteratom_entry = array();
while ($offset < $sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_offset = $offset;
$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
switch ($sub_sub_subelement_id) {
case EBML_ID_CHAPTERSEGMENTUID:
case EBML_ID_CHAPTERSEGMENTEDITIONUID:
$chapteratom_entry[$sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length);
break;
case EBML_ID_CHAPTERFLAGENABLED:
case EBML_ID_CHAPTERFLAGHIDDEN:
$chapteratom_entry[$sub_sub_subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
break;
case EBML_ID_CHAPTERUID:
case EBML_ID_CHAPTERTIMESTART:
case EBML_ID_CHAPTERTIMEEND:
$chapteratom_entry[$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
break;
case EBML_ID_CHAPTERTRACK:
$chaptertrack_entry = array();
while ($offset < $sub_sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_offset = $offset;
$sub_sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_end = $offset + $sub_sub_sub_subelement_length;
switch ($sub_sub_sub_subelement_id) {
case EBML_ID_CHAPTERTRACKNUMBER:
$chaptertrack_entry[$sub_sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled chapters.editionentry.chapteratom.chaptertrack element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_sub_sub_subelement_id . '::' . $sub_sub_sub_subelement_idname . ') at ' . $sub_sub_sub_subelement_offset;
break;
}
$offset = $sub_sub_sub_subelement_end;
}
$chapteratom_entry[$sub_sub_subelement_idname][] = $chaptertrack_entry;
break;
case EBML_ID_CHAPTERDISPLAY:
$chapterdisplay_entry = array();
while ($offset < $sub_sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_offset = $offset;
$sub_sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_idname = $this->EBMLidName($sub_sub_sub_subelement_id);
$sub_sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_end = $offset + $sub_sub_sub_subelement_length;
switch ($sub_sub_sub_subelement_id) {
case EBML_ID_CHAPSTRING:
case EBML_ID_CHAPLANGUAGE:
case EBML_ID_CHAPCOUNTRY:
$chapterdisplay_entry[$sub_sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length);
break;
default:
$this->warnings[] = 'Unhandled chapters.editionentry.chapteratom.chapterdisplay element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_sub_sub_subelement_id . '::' . $sub_sub_sub_subelement_idname . ') at ' . $sub_sub_sub_subelement_offset;
break;
}
$offset = $sub_sub_sub_subelement_end;
}
$chapteratom_entry[$sub_sub_subelement_idname][] = $chapterdisplay_entry;
break;
default:
$this->warnings[] = 'Unhandled chapters.editionentry.chapteratom element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_sub_subelement_id . '::' . $sub_sub_subelement_idname . ') at ' . $sub_sub_subelement_offset;
break;
}
$offset = $sub_sub_subelement_end;
}
$editionentry_entry[$sub_subelement_idname][] = $chapteratom_entry;
break;
default:
$this->warnings[] = 'Unhandled chapters.editionentry element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
$info['matroska']['chapters'][] = $editionentry_entry;
$offset = $sub_subelement_end;
break;
default:
$this->warnings[] = 'Unhandled chapters element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $subelement_end;
}
break;
case EBML_ID_VOID:
// padding, ignore
$void_entry = array();
$void_entry['offset'] = $offset;
$info['matroska']['void'][] = $void_entry;
break;
case EBML_ID_CLUSTER:
// not important to us, contains mostly actual audio/video data, ignore
$cluster_entry = array();
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
switch ($subelement_id) {
case EBML_ID_CLUSTERTIMECODE:
case EBML_ID_CLUSTERPOSITION:
case EBML_ID_CLUSTERPREVSIZE:
$cluster_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
break;
case EBML_ID_CLUSTERSILENTTRACKS:
$cluster_silent_tracks = array();
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_CLUSTERSILENTTRACKNUMBER:
$cluster_silent_tracks[] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled clusters.silenttracks element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
$cluster_entry[$subelement_idname][] = $cluster_silent_tracks;
$offset = $sub_subelement_end;
break;
case EBML_ID_CLUSTERBLOCKGROUP:
$cluster_block_group = array('offset' => $offset);
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_CLUSTERBLOCK:
$cluster_block_data = array();
$cluster_block_data['tracknumber'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$cluster_block_data['timecode'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 2));
$offset += 2;
// unsure whether this is 1 octect or 2 octets? (http://matroska.org/technical/specs/index.html#block_structure)
$cluster_block_data['flags_raw'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
$offset += 1;
//$cluster_block_data['flags']['reserved1'] = (($cluster_block_data['flags_raw'] & 0xF0) >> 4);
$cluster_block_data['flags']['invisible'] = (bool) (($cluster_block_data['flags_raw'] & 0x8) >> 3);
$cluster_block_data['flags']['lacing'] = ($cluster_block_data['flags_raw'] & 0x6) >> 1;
//$cluster_block_data['flags']['reserved2'] = (($cluster_block_data['flags_raw'] & 0x01) >> 0);
$cluster_block_data['flags']['lacing_type'] = $this->MatroskaBlockLacingType($cluster_block_data['flags']['lacing']);
if ($cluster_block_data['flags']['lacing'] != 0) {
$cluster_block_data['lace_frames'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
// Number of frames in the lace-1 (uint8)
$offset += 1;
if ($cluster_block_data['flags']['lacing'] != 2) {
$cluster_block_data['lace_frames'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
// Lace-coded size of each frame of the lace, except for the last one (multiple uint8). *This is not used with Fixed-size lacing as it is calculated automatically from (total size of lace) / (number of frames in lace).
$offset += 1;
}
}
if (!isset($info['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']])) {
$info['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']]['offset'] = $offset;
$info['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']]['length'] = $subelement_length;
}
$cluster_block_group[$sub_subelement_idname] = $cluster_block_data;
break;
case EBML_ID_CLUSTERREFERENCEPRIORITY:
// unsigned-int
// unsigned-int
case EBML_ID_CLUSTERBLOCKDURATION:
// unsigned-int
$cluster_block_group[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_CLUSTERREFERENCEBLOCK:
// signed-int
$cluster_block_group[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length), false, true);
break;
default:
$this->warnings[] = 'Unhandled clusters.blockgroup element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
$cluster_entry[$subelement_idname][] = $cluster_block_group;
$offset = $sub_subelement_end;
break;
case EBML_ID_CLUSTERSIMPLEBLOCK:
// http://www.matroska.org/technical/specs/index.html#simpleblock_structure
$cluster_block_data = array();
$cluster_block_data['tracknumber'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$cluster_block_data['timecode'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 2));
$offset += 2;
$cluster_block_data['flags_raw'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
$offset += 1;
$cluster_block_data['flags']['keyframe'] = ($cluster_block_data['flags_raw'] & 0x80) >> 7;
$cluster_block_data['flags']['reserved1'] = ($cluster_block_data['flags_raw'] & 0x70) >> 4;
$cluster_block_data['flags']['invisible'] = ($cluster_block_data['flags_raw'] & 0x8) >> 3;
$cluster_block_data['flags']['lacing'] = ($cluster_block_data['flags_raw'] & 0x6) >> 1;
// 00=no lacing; 01=Xiph lacing; 11=EBML lacing; 10=fixed-size lacing
$cluster_block_data['flags']['discardable'] = $cluster_block_data['flags_raw'] & 0x1;
if ($cluster_block_data['flags']['lacing'] > 0) {
$cluster_block_data['lace_frames'] = 1 + getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
$offset += 1;
if ($cluster_block_data['flags']['lacing'] != 0x2) {
// *This is not used with Fixed-size lacing as it is calculated automatically from (total size of lace) / (number of frames in lace).
$cluster_block_data['lace_frame_size'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
$offset += 1;
}
}
if (!isset($info['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']])) {
$info['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']]['offset'] = $offset;
$info['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']]['length'] = $subelement_length;
}
$cluster_block_group[$sub_subelement_idname] = $cluster_block_data;
break;
default:
$this->warnings[] = 'Unhandled cluster element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $subelement_end;
}
$info['matroska']['cluster'][] = $cluster_entry;
// check to see if all the data we need exists already, if so, break out of the loop
if (isset($info['matroska']['info']) && is_array($info['matroska']['info'])) {
if (isset($info['matroska']['tracks']['tracks']) && is_array($info['matroska']['tracks']['tracks'])) {
break 2;
}
}
break;
default:
if ($element_data['id_name'] == dechex($element_data['id'])) {
$info['error'][] = 'Unhandled segment [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $element_data['id'] . ') at ' . $element_data_offset;
} else {
$this->warnings[] = 'Unhandled segment [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $element_data['id'] . '::' . $element_data['id_name'] . ') at ' . $element_data['offset'];
}
break;
}
$offset = $element_end;
}
break;
default:
$info['error'][] = 'Unhandled chunk [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $top_element_id . ') at ' . $offset;
break;
}
$offset = $top_element_endoffset;
}
if (isset($info['matroska']['info']) && is_array($info['matroska']['info'])) {
foreach ($info['matroska']['info'] as $key => $infoarray) {
if (isset($infoarray['Duration'])) {
// TimecodeScale is how many nanoseconds each Duration unit is
$info['playtime_seconds'] = $infoarray['Duration'] * ((isset($infoarray['TimecodeScale']) ? $infoarray['TimecodeScale'] : 1000000) / 1000000000);
break;
}
}
}
if (isset($info['matroska']['tags']) && is_array($info['matroska']['tags'])) {
foreach ($info['matroska']['tags'] as $key => $infoarray) {
$this->ExtractCommentsSimpleTag($infoarray);
}
}
if (isset($info['matroska']['tracks']['tracks']) && is_array($info['matroska']['tracks']['tracks'])) {
foreach ($info['matroska']['tracks']['tracks'] as $key => $trackarray) {
$track_info = array();
if (isset($trackarray['FlagDefault'])) {
$track_info['default'] = $trackarray['FlagDefault'];
}
switch (isset($trackarray['TrackType']) ? $trackarray['TrackType'] : '') {
case 1:
// Video
if (!empty($trackarray['PixelWidth'])) {
$track_info['resolution_x'] = $trackarray['PixelWidth'];
}
if (!empty($trackarray['PixelHeight'])) {
$track_info['resolution_y'] = $trackarray['PixelHeight'];
}
if (!empty($trackarray['DisplayWidth'])) {
$track_info['display_x'] = $trackarray['DisplayWidth'];
}
if (!empty($trackarray['DisplayHeight'])) {
$track_info['display_y'] = $trackarray['DisplayHeight'];
}
if (!empty($trackarray['DefaultDuration'])) {
$track_info['frame_rate'] = round(1000000000 / $trackarray['DefaultDuration'], 3);
}
if (!empty($trackarray['CodecID'])) {
$track_info['dataformat'] = $this->MatroskaCodecIDtoCommonName($trackarray['CodecID']);
}
if (!empty($trackarray['codec_private_parsed']['fourcc'])) {
$track_info['fourcc'] = $trackarray['codec_private_parsed']['fourcc'];
}
$info['video']['streams'][] = $track_info;
if (isset($track_info['resolution_x']) && empty($info['video']['resolution_x'])) {
foreach ($track_info as $key => $value) {
$info['video'][$key] = $value;
}
}
break;
case 2:
// Audio
if (!empty($trackarray['CodecID'])) {
$track_info['dataformat'] = $this->MatroskaCodecIDtoCommonName($trackarray['CodecID']);
}
if (!empty($trackarray['SamplingFrequency'])) {
$track_info['sample_rate'] = $trackarray['SamplingFrequency'];
}
if (!empty($trackarray['Channels'])) {
$track_info['channels'] = $trackarray['Channels'];
}
if (!empty($trackarray['BitDepth'])) {
$track_info['bits_per_sample'] = $trackarray['BitDepth'];
}
if (!empty($trackarray['Language'])) {
$track_info['language'] = $trackarray['Language'];
}
switch (isset($trackarray[$this->EBMLidName(EBML_ID_CODECID)]) ? $trackarray[$this->EBMLidName(EBML_ID_CODECID)] : '') {
case 'A_PCM/INT/LIT':
case 'A_PCM/INT/BIG':
$track_info['bitrate'] = $trackarray['SamplingFrequency'] * $trackarray['Channels'] * $trackarray['BitDepth'];
break;
case 'A_AC3':
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ac3.php', __FILE__, false)) {
if (isset($info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'])) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'];
$getid3_ac3 = new getid3_ac3($getid3_temp);
$getid3_ac3->Analyze();
unset($getid3_temp->info['ac3']['GETID3_VERSION']);
$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $getid3_temp->info['ac3'];
if (!empty($getid3_temp->info['error'])) {
foreach ($getid3_temp->info['error'] as $newerror) {
$this->warnings[] = 'getid3_ac3() says: [' . $newerror . ']';
}
}
if (!empty($getid3_temp->info['warning'])) {
foreach ($getid3_temp->info['warning'] as $newerror) {
$this->warnings[] = 'getid3_ac3() says: [' . $newerror . ']';
}
}
if (isset($getid3_temp->info['audio']) && is_array($getid3_temp->info['audio'])) {
foreach ($getid3_temp->info['audio'] as $key => $value) {
$track_info[$key] = $value;
}
}
unset($getid3_temp, $getid3_ac3);
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because $info[matroska][track_data_offsets][' . $trackarray['TrackNumber'] . '][offset] not set';
}
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because cannot include "module.audio.ac3.php"';
}
break;
case 'A_DTS':
$dts_offset = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'];
// this is a NASTY hack, but sometimes audio data is off by a byte or two and not sure why, email info@getid3.org if you can explain better
fseek($this->getid3->fp, $dts_offset, SEEK_SET);
$magic_test = fread($this->getid3->fp, 8);
for ($i = 0; $i < 4; $i++) {
// look to see if DTS "magic" is here, if so adjust offset by that many bytes
if (substr($magic_test, $i, 4) == "þ€") {
$dts_offset += $i;
break;
}
}
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.dts.php', __FILE__, false)) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $dts_offset;
$getid3_dts = new getid3_dts($getid3_temp);
$getid3_dts->Analyze();
unset($getid3_temp->info['dts']['GETID3_VERSION']);
$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $getid3_temp->info['dts'];
if (!empty($getid3_temp->info['error'])) {
foreach ($getid3_temp->info['error'] as $newerror) {
$this->warnings[] = 'getid3_dts() says: [' . $newerror . ']';
}
}
if (!empty($getid3_temp->info['warning'])) {
foreach ($getid3_temp->info['warning'] as $newerror) {
$this->warnings[] = 'getid3_dts() says: [' . $newerror . ']';
}
}
if (isset($getid3_temp->info['audio']) && is_array($getid3_temp->info['audio'])) {
foreach ($getid3_temp->info['audio'] as $key => $value) {
$track_info[$key] = $value;
}
}
unset($getid3_temp, $getid3_dts);
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because cannot include "module.audio.dts.php"';
}
break;
case 'A_AAC':
$this->warnings[] = 'This version of getID3() [v' . $this->getid3->version() . '] has problems parsing AAC audio in Matroska containers [' . basename(__FILE__) . ':' . __LINE__ . ']';
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.aac.php', __FILE__, false)) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'];
$getid3_aac = new getid3_aac($getid3_temp);
$getid3_aac->Analyze();
unset($getid3_temp->info['aac']['GETID3_VERSION']);
if (!empty($getid3_temp->info['audio']['dataformat'])) {
$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $getid3_temp->info['aac'];
if (isset($getid3_temp->info['audio']) && is_array($getid3_temp->info['audio'])) {
foreach ($getid3_temp->info['audio'] as $key => $value) {
$track_info[$key] = $value;
}
}
} else {
$this->warnings[] = 'Failed to parse ' . $trackarray[$this->EBMLidName(EBML_ID_CODECID)] . ' audio data [' . basename(__FILE__) . ':' . __LINE__ . ']';
}
unset($getid3_temp, $getid3_aac);
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because cannot include "module.audio.aac.php"';
}
break;
case 'A_MPEG/L3':
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.mp3.php', __FILE__, false)) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'];
$getid3_temp->info['avdataend'] = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'] + $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['length'];
$getid3_mp3 = new getid3_mp3($getid3_temp);
$getid3_mp3->allow_bruteforce = true;
$getid3_mp3->Analyze();
if (!empty($getid3_temp->info['mpeg'])) {
unset($getid3_temp->info['mpeg']['GETID3_VERSION']);
$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $getid3_temp->info['mpeg'];
if (!empty($getid3_temp->info['error'])) {
foreach ($getid3_temp->info['error'] as $newerror) {
$this->warnings[] = 'getid3_mp3() says: [' . $newerror . ']';
}
}
if (!empty($getid3_temp->info['warning'])) {
foreach ($getid3_temp->info['warning'] as $newerror) {
$this->warnings[] = 'getid3_mp3() says: [' . $newerror . ']';
}
}
if (isset($getid3_temp->info['audio']) && is_array($getid3_temp->info['audio'])) {
foreach ($getid3_temp->info['audio'] as $key => $value) {
$track_info[$key] = $value;
}
}
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because getid3_mp3::Analyze failed at offset ' . $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'];
}
unset($getid3_temp, $getid3_mp3);
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because cannot include "module.audio.mp3.php"';
}
break;
case 'A_VORBIS':
if (isset($trackarray['CodecPrivate'])) {
// this is a NASTY hack, email info@getid3.org if you have a better idea how to get this info out
$found_vorbis = false;
for ($vorbis_offset = 1; $vorbis_offset < 16; $vorbis_offset++) {
if (substr($trackarray['CodecPrivate'], $vorbis_offset, 6) == 'vorbis') {
$vorbis_offset--;
$found_vorbis = true;
break;
}
}
if ($found_vorbis) {
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ogg.php', __FILE__, false)) {
$oggpageinfo['page_seqno'] = 0;
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_ogg = new getid3_ogg($getid3_temp);
$getid3_ogg->ParseVorbisPageHeader($trackarray['CodecPrivate'], $vorbis_offset, $oggpageinfo);
$vorbis_fileinfo = $getid3_temp->info;
unset($getid3_temp, $getid3_ogg);
if (isset($vorbis_fileinfo['audio'])) {
$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']]['audio'] = $vorbis_fileinfo['audio'];
}
if (isset($vorbis_fileinfo['ogg'])) {
$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']]['ogg'] = $vorbis_fileinfo['ogg'];
}
if (!empty($vorbis_fileinfo['error'])) {
foreach ($vorbis_fileinfo['error'] as $newerror) {
$this->warnings[] = 'getid3_ogg() says: [' . $newerror . ']';
}
}
if (!empty($vorbis_fileinfo['warning'])) {
foreach ($vorbis_fileinfo['warning'] as $newerror) {
$this->warnings[] = 'getid3_ogg() says: [' . $newerror . ']';
}
}
if (isset($vorbis_fileinfo['audio']) && is_array($vorbis_fileinfo['audio'])) {
foreach ($vorbis_fileinfo['audio'] as $key => $value) {
$track_info[$key] = $value;
}
}
if (!empty($vorbis_fileinfo['ogg']['bitrate_average'])) {
$track_info['bitrate'] = $vorbis_fileinfo['ogg']['bitrate_average'];
} elseif (!empty($vorbis_fileinfo['ogg']['bitrate_nominal'])) {
$track_info['bitrate'] = $vorbis_fileinfo['ogg']['bitrate_nominal'];
}
unset($vorbis_fileinfo);
unset($oggpageinfo);
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because cannot include "module.audio.ogg.php"';
}
} else {
}
} else {
}
break;
default:
$this->warnings[] = 'Unhandled audio type "' . (isset($trackarray[$this->EBMLidName(EBML_ID_CODECID)]) ? $trackarray[$this->EBMLidName(EBML_ID_CODECID)] : '') . '"';
break;
}
$info['audio']['streams'][] = $track_info;
if (isset($track_info['dataformat']) && empty($info['audio']['dataformat'])) {
foreach ($track_info as $key => $value) {
$info['audio'][$key] = $value;
}
}
break;
default:
// ignore, do nothing
break;
}
}
}
if ($this->hide_clusters) {
// too much data returned that is usually not useful
if (isset($info['matroska']['segments']) && is_array($info['matroska']['segments'])) {
foreach ($info['matroska']['segments'] as $key => $segmentsarray) {
if ($segmentsarray['id'] == EBML_ID_CLUSTER) {
unset($info['matroska']['segments'][$key]);
}
}
}
if (isset($info['matroska']['seek']) && is_array($info['matroska']['seek'])) {
foreach ($info['matroska']['seek'] as $key => $seekarray) {
if ($seekarray['target_id'] == EBML_ID_CLUSTER) {
unset($info['matroska']['seek'][$key]);
}
}
}
//unset($info['matroska']['cluster']);
//unset($info['matroska']['track_data_offsets']);
}
if (!empty($info['video']['streams'])) {
$info['mime_type'] = 'video/x-matroska';
} elseif (!empty($info['audio']['streams'])) {
$info['mime_type'] = 'audio/x-matroska';
} elseif (isset($info['mime_type'])) {
unset($info['mime_type']);
}
foreach ($this->warnings as $key => $value) {
$info['warning'][] = $value;
}
return true;
}