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root@pico committed 2015-05-01 21:20:47 +02:00
1 parent 70d2335bba
commit 7428b67da5
1086 files changed
+94145 -59082
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wp-includes/ID3/module.audio.mp3.php
+40 -37
View File
@@ -3,6 +3,7 @@
/// getID3() by James Heinrich <info@getid3.org> //
// available at http://getid3.sourceforge.net //
// or http://www.getid3.org //
// also https://github.com/JamesHeinrich/getID3 //
/////////////////////////////////////////////////////////////////
// See readme.txt for more details //
/////////////////////////////////////////////////////////////////
@@ -95,8 +96,8 @@ class getid3_mp3 extends getid3_handler
// Not sure what version of LAME this is - look in padding of last frame for longer version string
$PossibleLAMEversionStringOffset = $info['avdataend'] - $PossiblyLongerLAMEversion_FrameLength;
fseek($this->getid3->fp, $PossibleLAMEversionStringOffset);
$PossiblyLongerLAMEversion_Data = fread($this->getid3->fp, $PossiblyLongerLAMEversion_FrameLength);
$this->fseek($PossibleLAMEversionStringOffset);
$PossiblyLongerLAMEversion_Data = $this->fread($PossiblyLongerLAMEversion_FrameLength);
switch (substr($CurrentDataLAMEversionString, -1)) {
case 'a':
case 'b':
@@ -422,12 +423,12 @@ class getid3_mp3 extends getid3_handler
$MPEGaudioEmphasisLookup = self::MPEGaudioEmphasisArray();
}
if (fseek($this->getid3->fp, $offset, SEEK_SET) != 0) {
if ($this->fseek($offset) != 0) {
$info['error'][] = 'decodeMPEGaudioHeader() failed to seek to next offset at '.$offset;
return false;
}
//$headerstring = fread($this->getid3->fp, 1441); // worst-case max length = 32kHz @ 320kbps layer 3 = 1441 bytes/frame
$headerstring = fread($this->getid3->fp, 226); // LAME header at offset 36 + 190 bytes of Xing/LAME data
//$headerstring = $this->fread(1441); // worst-case max length = 32kHz @ 320kbps layer 3 = 1441 bytes/frame
$headerstring = $this->fread(226); // LAME header at offset 36 + 190 bytes of Xing/LAME data
// MP3 audio frame structure:
// $aa $aa $aa $aa [$bb $bb] $cc...
@@ -890,19 +891,21 @@ class getid3_mp3 extends getid3_handler
if (($ExpectedNumberOfAudioBytes > 0) && ($ExpectedNumberOfAudioBytes != ($info['avdataend'] - $info['avdataoffset']))) {
if ($ExpectedNumberOfAudioBytes > ($info['avdataend'] - $info['avdataoffset'])) {
if (isset($info['fileformat']) && ($info['fileformat'] == 'riff')) {
if ($this->isDependencyFor('matroska') || $this->isDependencyFor('riff')) {
// ignore, audio data is broken into chunks so will always be data "missing"
} elseif (($ExpectedNumberOfAudioBytes - ($info['avdataend'] - $info['avdataoffset'])) == 1) {
$info['warning'][] = 'Last byte of data truncated (this is a known bug in Meracl ID3 Tag Writer before v1.3.5)';
} else {
$info['warning'][] = 'Probable truncated file: expecting '.$ExpectedNumberOfAudioBytes.' bytes of audio data, only found '.($info['avdataend'] - $info['avdataoffset']).' (short by '.($ExpectedNumberOfAudioBytes - ($info['avdataend'] - $info['avdataoffset'])).' bytes)';
}
elseif (($ExpectedNumberOfAudioBytes - ($info['avdataend'] - $info['avdataoffset'])) == 1) {
$this->warning('Last byte of data truncated (this is a known bug in Meracl ID3 Tag Writer before v1.3.5)');
}
else {
$this->warning('Probable truncated file: expecting '.$ExpectedNumberOfAudioBytes.' bytes of audio data, only found '.($info['avdataend'] - $info['avdataoffset']).' (short by '.($ExpectedNumberOfAudioBytes - ($info['avdataend'] - $info['avdataoffset'])).' bytes)');
}
} else {
if ((($info['avdataend'] - $info['avdataoffset']) - $ExpectedNumberOfAudioBytes) == 1) {
// $prenullbytefileoffset = ftell($this->getid3->fp);
// fseek($this->getid3->fp, $info['avdataend'], SEEK_SET);
// $PossibleNullByte = fread($this->getid3->fp, 1);
// fseek($this->getid3->fp, $prenullbytefileoffset, SEEK_SET);
// $prenullbytefileoffset = $this->ftell();
// $this->fseek($info['avdataend']);
// $PossibleNullByte = $this->fread(1);
// $this->fseek($prenullbytefileoffset);
// if ($PossibleNullByte === "\x00") {
$info['avdataend']--;
// $info['warning'][] = 'Extra null byte at end of MP3 data assumed to be RIFF padding and therefore ignored';
@@ -1118,8 +1121,8 @@ class getid3_mp3 extends getid3_handler
public function FreeFormatFrameLength($offset, $deepscan=false) {
$info = &$this->getid3->info;
fseek($this->getid3->fp, $offset, SEEK_SET);
$MPEGaudioData = fread($this->getid3->fp, 32768);
$this->fseek($offset);
$MPEGaudioData = $this->fread(32768);
$SyncPattern1 = substr($MPEGaudioData, 0, 4);
// may be different pattern due to padding
@@ -1166,8 +1169,8 @@ class getid3_mp3 extends getid3_handler
$ActualFrameLengthValues = array();
$nextoffset = $offset + $framelength;
while ($nextoffset < ($info['avdataend'] - 6)) {
fseek($this->getid3->fp, $nextoffset - 1, SEEK_SET);
$NextSyncPattern = fread($this->getid3->fp, 6);
$this->fseek($nextoffset - 1);
$NextSyncPattern = $this->fread(6);
if ((substr($NextSyncPattern, 1, strlen($SyncPattern1)) == $SyncPattern1) || (substr($NextSyncPattern, 1, strlen($SyncPattern2)) == $SyncPattern2)) {
// good - found where expected
$ActualFrameLengthValues[] = $framelength;
@@ -1215,22 +1218,22 @@ class getid3_mp3 extends getid3_handler
$Distribution['padding'] = array();
$info = &$this->getid3->info;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$this->fseek($info['avdataoffset']);
$max_frames_scan = 5000;
$frames_scanned = 0;
$previousvalidframe = $info['avdataoffset'];
while (ftell($this->getid3->fp) < $info['avdataend']) {
while ($this->ftell() < $info['avdataend']) {
set_time_limit(30);
$head4 = fread($this->getid3->fp, 4);
$head4 = $this->fread(4);
if (strlen($head4) < 4) {
break;
}
if ($head4{0} != "\xFF") {
for ($i = 1; $i < 4; $i++) {
if ($head4{$i} == "\xFF") {
fseek($this->getid3->fp, $i - 4, SEEK_CUR);
$this->fseek($i - 4, SEEK_CUR);
continue 2;
}
}
@@ -1258,9 +1261,9 @@ class getid3_mp3 extends getid3_handler
$LongMPEGfrequencyLookup[$head4]);
}
if ($MPEGaudioHeaderLengthCache[$head4] > 4) {
$WhereWeWere = ftell($this->getid3->fp);
fseek($this->getid3->fp, $MPEGaudioHeaderLengthCache[$head4] - 4, SEEK_CUR);
$next4 = fread($this->getid3->fp, 4);
$WhereWeWere = $this->ftell();
$this->fseek($MPEGaudioHeaderLengthCache[$head4] - 4, SEEK_CUR);
$next4 = $this->fread(4);
if ($next4{0} == "\xFF") {
if (!isset($MPEGaudioHeaderDecodeCache[$next4])) {
$MPEGaudioHeaderDecodeCache[$next4] = self::MPEGaudioHeaderDecode($next4);
@@ -1269,7 +1272,7 @@ class getid3_mp3 extends getid3_handler
$MPEGaudioHeaderValidCache[$next4] = self::MPEGaudioHeaderValid($MPEGaudioHeaderDecodeCache[$next4], false, false);
}
if ($MPEGaudioHeaderValidCache[$next4]) {
fseek($this->getid3->fp, -4, SEEK_CUR);
$this->fseek(-4, SEEK_CUR);
getid3_lib::safe_inc($Distribution['bitrate'][$LongMPEGbitrateLookup[$head4]]);
getid3_lib::safe_inc($Distribution['layer'][$LongMPEGlayerLookup[$head4]]);
@@ -1277,7 +1280,7 @@ class getid3_mp3 extends getid3_handler
getid3_lib::safe_inc($Distribution['padding'][intval($LongMPEGpaddingLookup[$head4])]);
getid3_lib::safe_inc($Distribution['frequency'][$LongMPEGfrequencyLookup[$head4]]);
if ($max_frames_scan && (++$frames_scanned >= $max_frames_scan)) {
$pct_data_scanned = (ftell($this->getid3->fp) - $info['avdataoffset']) / ($info['avdataend'] - $info['avdataoffset']);
$pct_data_scanned = ($this->ftell() - $info['avdataoffset']) / ($info['avdataend'] - $info['avdataoffset']);
$info['warning'][] = 'too many MPEG audio frames to scan, only scanned first '.$max_frames_scan.' frames ('.number_format($pct_data_scanned * 100, 1).'% of file) and extrapolated distribution, playtime and bitrate may be incorrect.';
foreach ($Distribution as $key1 => $value1) {
foreach ($value1 as $key2 => $value2) {
@@ -1290,7 +1293,7 @@ class getid3_mp3 extends getid3_handler
}
}
unset($next4);
fseek($this->getid3->fp, $WhereWeWere - 3, SEEK_SET);
$this->fseek($WhereWeWere - 3);
}
}
@@ -1355,13 +1358,13 @@ class getid3_mp3 extends getid3_handler
}
fseek($this->getid3->fp, $avdataoffset, SEEK_SET);
$this->fseek($avdataoffset);
$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->getid3->fp, $sync_seek_buffer_size);
$header = $this->fread($sync_seek_buffer_size);
$sync_seek_buffer_size = strlen($header);
$SynchSeekOffset = 0;
while ($SynchSeekOffset < $sync_seek_buffer_size) {
@@ -1473,7 +1476,7 @@ class getid3_mp3 extends getid3_handler
$dummy = array('error'=>$info['error'], 'warning'=>$info['warning'], 'avdataend'=>$info['avdataend'], 'avdataoffset'=>$info['avdataoffset']);
$synchstartoffset = $info['avdataoffset'];
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$this->fseek($info['avdataoffset']);
// you can play with these numbers:
$max_frames_scan = 50000;
@@ -1488,13 +1491,13 @@ class getid3_mp3 extends getid3_handler
$pct_data_scanned = 0;
for ($current_segment = 0; $current_segment < $max_scan_segments; $current_segment++) {
$frames_scanned_this_segment = 0;
if (ftell($this->getid3->fp) >= $info['avdataend']) {
if ($this->ftell() >= $info['avdataend']) {
break;
}
$scan_start_offset[$current_segment] = max(ftell($this->getid3->fp), $info['avdataoffset'] + round($current_segment * (($info['avdataend'] - $info['avdataoffset']) / $max_scan_segments)));
$scan_start_offset[$current_segment] = max($this->ftell(), $info['avdataoffset'] + round($current_segment * (($info['avdataend'] - $info['avdataoffset']) / $max_scan_segments)));
if ($current_segment > 0) {
fseek($this->getid3->fp, $scan_start_offset[$current_segment], SEEK_SET);
$buffer_4k = fread($this->getid3->fp, 4096);
$this->fseek($scan_start_offset[$current_segment]);
$buffer_4k = $this->fread(4096);
for ($j = 0; $j < (strlen($buffer_4k) - 4); $j++) {
if (($buffer_4k{$j} == "\xFF") && ($buffer_4k{($j + 1)} > "\xE0")) { // synch detected
if ($this->decodeMPEGaudioHeader($scan_start_offset[$current_segment] + $j, $dummy, false, false, $FastMode)) {
@@ -1523,7 +1526,7 @@ class getid3_mp3 extends getid3_handler
}
$frames_scanned++;
if ($frames_scan_per_segment && (++$frames_scanned_this_segment >= $frames_scan_per_segment)) {
$this_pct_scanned = (ftell($this->getid3->fp) - $scan_start_offset[$current_segment]) / ($info['avdataend'] - $info['avdataoffset']);
$this_pct_scanned = ($this->ftell() - $scan_start_offset[$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
$max_scan_segments = 1;
@@ -2006,4 +2009,4 @@ class getid3_mp3 extends getid3_handler
return (isset($LAMEpresetUsedLookup[$LAMEtag['preset_used_id']]) ? $LAMEpresetUsedLookup[$LAMEtag['preset_used_id']] : 'new/unknown preset: '.$LAMEtag['preset_used_id'].' - report to info@getid3.org');
}
}
}