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-rw-r--r--modules/id3/getid3/module.audio-video.flv.php106
1 files changed, 56 insertions, 50 deletions
diff --git a/modules/id3/getid3/module.audio-video.flv.php b/modules/id3/getid3/module.audio-video.flv.php
index 98661d6c..d7ca5cf7 100644
--- a/modules/id3/getid3/module.audio-video.flv.php
+++ b/modules/id3/getid3/module.audio-video.flv.php
@@ -15,6 +15,10 @@
// Steve Webster <steve.webster@featurecreep.com> //
// * version 0.2 (22 February 2006) //
// //
+// Modified to not read entire file into memory //
+// by James Heinrich <info@getid3.org> //
+// * version 0.3 (15 June 2006) //
+// //
/////////////////////////////////////////////////////////////////
// //
// module.audio-video.flv.php //
@@ -37,81 +41,84 @@ class getid3_flv
function getid3_flv(&$fd, &$ThisFileInfo, $ReturnAllTagData=false) {
fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
- $FLVfileData = fread($fd, $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']);
+ $FLVdataLength = $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset'];
+ $FLVheader = fread($fd, 5);
+
+ $ThisFileInfo['fileformat'] = 'flv';
+ $ThisFileInfo['flv']['header']['signature'] = substr($FLVheader, 0, 3);
+ $ThisFileInfo['flv']['header']['version'] = getid3_lib::BigEndian2Int(substr($FLVheader, 3, 1));
+ $TypeFlags = getid3_lib::BigEndian2Int(substr($FLVheader, 4, 1));
- $FLVmagic = substr($FLVfileData, 0, 3);
- if ($FLVmagic != 'FLV') {
+ if ($ThisFileInfo['flv']['header']['signature'] != 'FLV') {
$ThisFileInfo['error'][] = 'Expecting "FLV" at offset '.$ThisFileInfo['avdataoffset'].', found "'.$ThisFileInfo['flv']['header']['signature'].'"';
unset($ThisFileInfo['flv']);
unset($ThisFileInfo['fileformat']);
return false;
}
- $ThisFileInfo['flv']['header']['signature'] = $FLVmagic;
- $ThisFileInfo['flv']['header']['version'] = ord($FLVfileData{3});
- $ThisFileInfo['fileformat'] = 'flv';
-
- $TypeFlags = ord($FLVfileData{4});
- $ThisFileInfo['flv']['header']['hasAudio'] = (bool) ($TypeFlags & 4);
- $ThisFileInfo['flv']['header']['hasVideo'] = (bool) ($TypeFlags & 1);
- $FrameSizeDataLength = getid3_lib::BigEndian2Int(substr($FLVfileData, 5, 4));
+ $ThisFileInfo['flv']['header']['hasAudio'] = (bool) ($TypeFlags & 0x04);
+ $ThisFileInfo['flv']['header']['hasVideo'] = (bool) ($TypeFlags & 0x01);
- // FLV tags
- $CurrentOffset = $FrameSizeDataLength;
- $FLVdataLength = strlen($FLVfileData);
+ $FrameSizeDataLength = getid3_lib::BigEndian2Int(fread($fd, 4));
+ $FLVheaderFrameLength = 9;
+ if ($FrameSizeDataLength > $FLVheaderFrameLength) {
+ fseek($fd, $FrameSizeDataLength - $FLVheaderFrameLength, SEEK_CUR);
+ }
$Duration = 0;
-
- $SoundFormat = null;
- $VideoFormat = null;
- while ($CurrentOffset < $FLVdataLength) {
- // previous tag size
- $PreviousTagLength = getid3_lib::BigEndian2Int(substr($FLVfileData, $CurrentOffset, 4));
- $CurrentOffset += 4;
-
- $TagType = ord(substr($FLVfileData, $CurrentOffset, 1));
- $DataLength = getid3_lib::BigEndian2Int(substr($FLVfileData, $CurrentOffset + 1, 3));
- $Timestamp = getid3_lib::BigEndian2Int(substr($FLVfileData, $CurrentOffset + 4, 3));
+ while ((ftell($fd) + 1) < $ThisFileInfo['avdataend']) {
+ //if (!$ThisFileInfo['flv']['header']['hasAudio'] || isset($ThisFileInfo['flv']['audio']['audioFormat'])) {
+ // if (!$ThisFileInfo['flv']['header']['hasVideo'] || isset($ThisFileInfo['flv']['video']['videoCodec'])) {
+ // break;
+ // }
+ //}
+
+ $ThisTagHeader = fread($fd, 16);
+
+ $PreviousTagLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 0, 4));
+ $TagType = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 4, 1));
+ $DataLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 5, 3));
+ $Timestamp = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 8, 3));
+ $LastHeaderByte = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 15, 1));
+ $NextOffset = ftell($fd) - 1 + $DataLength;
switch ($TagType) {
case GETID3_FLV_TAG_AUDIO:
- if (is_null($SoundFormat)) {
- $SoundInfo = ord(substr($FLVfileData, $CurrentOffset + 11, 1));
- $SoundFormat = $SoundInfo & 0x07;
- $ThisFileInfo['flv']['audio']['audioFormat'] = $SoundFormat;
- $ThisFileInfo['flv']['audio']['audioRate'] = ($SoundInfo & 0x30) / 0x10;
- $ThisFileInfo['flv']['audio']['audioSampleSize'] = ($SoundInfo & 0x40) / 0x40;
- $ThisFileInfo['flv']['audio']['audioType'] = ($SoundInfo & 0x80) / 0x80;
+ if (!isset($ThisFileInfo['flv']['audio']['audioFormat'])) {
+ $ThisFileInfo['flv']['audio']['audioFormat'] = $LastHeaderByte & 0x07;
+ $ThisFileInfo['flv']['audio']['audioRate'] = ($LastHeaderByte & 0x30) / 0x10;
+ $ThisFileInfo['flv']['audio']['audioSampleSize'] = ($LastHeaderByte & 0x40) / 0x40;
+ $ThisFileInfo['flv']['audio']['audioType'] = ($LastHeaderByte & 0x80) / 0x80;
}
break;
case GETID3_FLV_TAG_VIDEO:
- if (is_null($VideoFormat)) {
- $VideoInfo = ord(substr($FLVfileData, $CurrentOffset + 11, 1));
- $VideoFormat = $VideoInfo & 0x07;
- $ThisFileInfo['flv']['video']['videoCodec'] = $VideoFormat;
+ if (!isset($ThisFileInfo['flv']['video']['videoCodec'])) {
+ $ThisFileInfo['flv']['video']['videoCodec'] = $LastHeaderByte & 0x07;
+
+ $FLVvideoHeader = fread($fd, 11);
- if ($VideoFormat != GETID3_FLV_VIDEO_VP6) {
+ if ($ThisFileInfo['flv']['video']['videoCodec'] != GETID3_FLV_VIDEO_VP6) {
- $PictureSizeType = (getid3_lib::BigEndian2Int(substr($FLVfileData, $CurrentOffset + 15, 2))) >> 7;
+ $PictureSizeType = (getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 3, 2))) >> 7;
$PictureSizeType = $PictureSizeType & 0x0007;
$ThisFileInfo['flv']['header']['videoSizeType'] = $PictureSizeType;
switch ($PictureSizeType) {
case 0:
- $PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVfileData, $CurrentOffset + 16, 2));
+ $PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2));
$PictureSizeEnc <<= 1;
$ThisFileInfo['video']['resolution_x'] = ($PictureSizeEnc & 0xFF00) >> 8;
- $PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVfileData, $CurrentOffset + 17, 2));
+ $PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 2));
$PictureSizeEnc <<= 1;
$ThisFileInfo['video']['resolution_y'] = ($PictureSizeEnc & 0xFF00) >> 8;
break;
case 1:
- $PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVfileData, $CurrentOffset + 16, 4));
+ $PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 4));
$PictureSizeEnc <<= 1;
$ThisFileInfo['video']['resolution_x'] = ($PictureSizeEnc & 0xFFFF0000) >> 16;
- $PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVfileData, $CurrentOffset + 18, 4));
+ $PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 7, 4));
$PictureSizeEnc <<= 1;
$ThisFileInfo['video']['resolution_y'] = ($PictureSizeEnc & 0xFFFF0000) >> 16;
break;
@@ -154,16 +161,15 @@ class getid3_flv
// Meta tag
case GETID3_FLV_TAG_META:
- $reader = new AMFReader(new AMFStream(substr($FLVfileData, $CurrentOffset + 11, $DataLength)));
+ fseek($fd, -1, SEEK_CUR);
+ $reader = new AMFReader(new AMFStream(fread($fd, $DataLength)));
$eventName = $reader->readData();
$ThisFileInfo['meta'][$eventName] = $reader->readData();
-
unset($reader);
- $ThisFileInfo['video']['frame_rate'] = $ThisFileInfo['meta']['onMetaData']['framerate'];
- $ThisFileInfo['video']['resolution_x'] = $ThisFileInfo['meta']['onMetaData']['width'];
- $ThisFileInfo['video']['resolution_y'] = $ThisFileInfo['meta']['onMetaData']['height'];
-
+ $ThisFileInfo['video']['frame_rate'] = $ThisFileInfo['meta']['onMetaData']['framerate'];
+ $ThisFileInfo['video']['resolution_x'] = $ThisFileInfo['meta']['onMetaData']['width'];
+ $ThisFileInfo['video']['resolution_y'] = $ThisFileInfo['meta']['onMetaData']['height'];
break;
default:
@@ -175,7 +181,7 @@ class getid3_flv
$Duration = $Timestamp;
}
- $CurrentOffset += ($DataLength + 11);
+ fseek($fd, $NextOffset, SEEK_SET);
}
$ThisFileInfo['playtime_seconds'] = $Duration / 1000;
@@ -191,7 +197,7 @@ class getid3_flv
$ThisFileInfo['audio']['dataformat'] = 'flv';
}
if (@$ThisFileInfo['flv']['header']['hasVideo']) {
- $ThisFileInfo['video']['codec'] = $this->FLVvideoCodec($ThisFileInfo['flv']['video']['videoCodec']);
+ $ThisFileInfo['video']['codec'] = $this->FLVvideoCodec($ThisFileInfo['flv']['video']['videoCodec']);
$ThisFileInfo['video']['dataformat'] = 'flv';
$ThisFileInfo['video']['lossless'] = false;
}
generated by cgit (git 2.34.1) at 2025-08-14 02:03:58 +0000