/// getID3() by James Heinrich <info@getid3.org> //
// available at http://getid3.sourceforge.net //
// or http://www.getid3.org //
+// also https://github.com/JamesHeinrich/getID3 //
// //
// FLV module by Seth Kaufman <sethØwhirl-i-gig*com> //
// //
// * version 0.6.1 (30 May 2011) //
// prevent infinite loops in expGolombUe() //
// //
+// * version 0.7.0 (16 Jul 2013) //
+// handle GETID3_FLV_VIDEO_VP6FLV_ALPHA //
+// improved AVCSequenceParameterSetReader::readData() //
+// by Xander Schouwerwou <schouwerwouØgmail*com> //
+// //
/////////////////////////////////////////////////////////////////
// //
// module.audio-video.flv.php //
define('H264_PROFILE_HIGH444', 144);
define('H264_PROFILE_HIGH444_PREDICTIVE', 244);
-class getid3_flv extends getid3_handler
-{
+class getid3_flv extends getid3_handler {
+
+ const magic = 'FLV';
+
public $max_frames = 100000; // break out of the loop if too many frames have been scanned; only scan this many if meta frame does not contain useful duration
public function Analyze() {
$info = &$this->getid3->info;
- fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
+ $this->fseek($info['avdataoffset']);
$FLVdataLength = $info['avdataend'] - $info['avdataoffset'];
- $FLVheader = fread($this->getid3->fp, 5);
+ $FLVheader = $this->fread(5);
$info['fileformat'] = 'flv';
$info['flv']['header']['signature'] = substr($FLVheader, 0, 3);
$info['flv']['header']['version'] = getid3_lib::BigEndian2Int(substr($FLVheader, 3, 1));
$TypeFlags = getid3_lib::BigEndian2Int(substr($FLVheader, 4, 1));
- $magic = 'FLV';
- if ($info['flv']['header']['signature'] != $magic) {
- $info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($info['flv']['header']['signature']).'"';
- unset($info['flv']);
- unset($info['fileformat']);
+ if ($info['flv']['header']['signature'] != self::magic) {
+ $info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes(self::magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($info['flv']['header']['signature']).'"';
+ unset($info['flv'], $info['fileformat']);
return false;
}
$info['flv']['header']['hasAudio'] = (bool) ($TypeFlags & 0x04);
$info['flv']['header']['hasVideo'] = (bool) ($TypeFlags & 0x01);
- $FrameSizeDataLength = getid3_lib::BigEndian2Int(fread($this->getid3->fp, 4));
+ $FrameSizeDataLength = getid3_lib::BigEndian2Int($this->fread(4));
$FLVheaderFrameLength = 9;
if ($FrameSizeDataLength > $FLVheaderFrameLength) {
- fseek($this->getid3->fp, $FrameSizeDataLength - $FLVheaderFrameLength, SEEK_CUR);
+ $this->fseek($FrameSizeDataLength - $FLVheaderFrameLength, SEEK_CUR);
}
$Duration = 0;
$found_video = 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);
+ while ((($this->ftell() + 16) < $info['avdataend']) && (($tagParseCount++ <= $this->max_frames) || !$found_valid_meta_playtime)) {
+ $ThisTagHeader = $this->fread(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));
- $NextOffset = ftell($this->getid3->fp) - 1 + $DataLength;
+ $NextOffset = $this->ftell() - 1 + $DataLength;
if ($Timestamp > $Duration) {
$Duration = $Timestamp;
}
$found_video = true;
$info['flv']['video']['videoCodec'] = $LastHeaderByte & 0x07;
- $FLVvideoHeader = fread($this->getid3->fp, 11);
+ $FLVvideoHeader = $this->fread(11);
if ($info['flv']['video']['videoCodec'] == GETID3_FLV_VIDEO_H264) {
// this code block contributed by: moysevichØgmail*com
//$spsSize = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 9, 2));
$spsSize = getid3_lib::LittleEndian2Int(substr($FLVvideoHeader, 9, 2));
// read the first SequenceParameterSet
- $sps = fread($this->getid3->fp, $spsSize);
+ $sps = $this->fread($spsSize);
if (strlen($sps) == $spsSize) { // make sure that whole SequenceParameterSet was red
$spsReader = new AVCSequenceParameterSetReader($sps);
$spsReader->readData();
//$PictureSizeEnc <<= 1;
//$info['video']['resolution_y'] = ($PictureSizeEnc & 0xFF00) >> 8;
- $PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 2));
- $PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2));
- $PictureSizeEnc['x'] >>= 7;
- $PictureSizeEnc['y'] >>= 7;
+ $PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 2)) >> 7;
+ $PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2)) >> 7;
$info['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFF;
$info['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFF;
break;
case 1:
- $PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 3));
- $PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 3));
- $PictureSizeEnc['x'] >>= 7;
- $PictureSizeEnc['y'] >>= 7;
+ $PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 3)) >> 7;
+ $PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 3)) >> 7;
$info['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFFFF;
$info['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFFFF;
break;
break;
}
+
+ } elseif ($info['flv']['video']['videoCodec'] == GETID3_FLV_VIDEO_VP6FLV_ALPHA) {
+
+ /* contributed by schouwerwouØgmail*com */
+ if (!isset($info['video']['resolution_x'])) { // only when meta data isn't set
+ $PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 2));
+ $PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 7, 2));
+ $info['video']['resolution_x'] = ($PictureSizeEnc['x'] & 0xFF) << 3;
+ $info['video']['resolution_y'] = ($PictureSizeEnc['y'] & 0xFF) << 3;
+ }
+ /* end schouwerwouØgmail*com */
+
+ }
+ if (!empty($info['video']['resolution_x']) && !empty($info['video']['resolution_y'])) {
+ $info['video']['pixel_aspect_ratio'] = $info['video']['resolution_x'] / $info['video']['resolution_y'];
}
- $info['video']['pixel_aspect_ratio'] = $info['video']['resolution_x'] / $info['video']['resolution_y'];
}
break;
case GETID3_FLV_TAG_META:
if (!$found_meta) {
$found_meta = true;
- fseek($this->getid3->fp, -1, SEEK_CUR);
- $datachunk = fread($this->getid3->fp, $DataLength);
+ $this->fseek(-1, SEEK_CUR);
+ $datachunk = $this->fread($DataLength);
$AMFstream = new AMFStream($datachunk);
$reader = new AMFReader($AMFstream);
$eventName = $reader->readData();
// noop
break;
}
- fseek($this->getid3->fp, $NextOffset, SEEK_SET);
+ $this->fseek($NextOffset);
}
$info['playtime_seconds'] = $Duration / 1000;
}
if ($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']);
+ $info['audio']['codec'] = self::audioFormatLookup($info['flv']['audio']['audioFormat']);
+ $info['audio']['sample_rate'] = self::audioRateLookup($info['flv']['audio']['audioRate']);
+ $info['audio']['bits_per_sample'] = self::audioBitDepthLookup($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']);
+ $info['video']['codec'] = self::videoCodecLookup($info['flv']['video']['videoCodec']);
$info['video']['dataformat'] = 'flv';
$info['video']['lossless'] = false;
}
$info['bitrate'] = (($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']);
+ $info['audio']['codec'] = self::audioFormatLookup($info['flv']['meta']['onMetaData']['audiocodecid']);
}
if (isset($info['flv']['meta']['onMetaData']['videocodecid'])) {
- $info['video']['codec'] = $this->FLVvideoCodec($info['flv']['meta']['onMetaData']['videocodecid']);
+ $info['video']['codec'] = self::videoCodecLookup($info['flv']['meta']['onMetaData']['videocodecid']);
}
return true;
}
- public function FLVaudioFormat($id) {
- $FLVaudioFormat = array(
+ public static function audioFormatLookup($id) {
+ static $lookup = array(
0 => 'Linear PCM, platform endian',
1 => 'ADPCM',
2 => 'mp3',
8 => 'G.711 mu-law logarithmic PCM',
9 => 'reserved',
10 => 'AAC',
- 11 => false, // unknown?
+ 11 => 'Speex',
12 => false, // unknown?
13 => false, // unknown?
14 => 'mp3 8kHz',
15 => 'Device-specific sound',
);
- return (isset($FLVaudioFormat[$id]) ? $FLVaudioFormat[$id] : false);
+ return (isset($lookup[$id]) ? $lookup[$id] : false);
}
- public function FLVaudioRate($id) {
- $FLVaudioRate = array(
+ public static function audioRateLookup($id) {
+ static $lookup = array(
0 => 5500,
1 => 11025,
2 => 22050,
3 => 44100,
);
- return (isset($FLVaudioRate[$id]) ? $FLVaudioRate[$id] : false);
+ return (isset($lookup[$id]) ? $lookup[$id] : false);
}
- public function FLVaudioBitDepth($id) {
- $FLVaudioBitDepth = array(
+ public static function audioBitDepthLookup($id) {
+ static $lookup = array(
0 => 8,
1 => 16,
);
- return (isset($FLVaudioBitDepth[$id]) ? $FLVaudioBitDepth[$id] : false);
+ return (isset($lookup[$id]) ? $lookup[$id] : false);
}
- public function FLVvideoCodec($id) {
- $FLVvideoCodec = array(
+ public static function videoCodecLookup($id) {
+ static $lookup = array(
GETID3_FLV_VIDEO_H263 => 'Sorenson H.263',
GETID3_FLV_VIDEO_SCREEN => 'Screen video',
GETID3_FLV_VIDEO_VP6FLV => 'On2 VP6',
GETID3_FLV_VIDEO_SCREENV2 => 'Screen video v2',
GETID3_FLV_VIDEO_H264 => 'Sorenson H.264',
);
- return (isset($FLVvideoCodec[$id]) ? $FLVvideoCodec[$id] : false);
+ return (isset($lookup[$id]) ? $lookup[$id] : false);
}
}
public $bytes;
public $pos;
- public function AMFStream(&$bytes) {
+ public function __construct(&$bytes) {
$this->bytes =& $bytes;
$this->pos = 0;
}
class AMFReader {
public $stream;
- public function AMFReader(&$stream) {
+ public function __construct(&$stream) {
$this->stream =& $stream;
}
public $width;
public $height;
- public function AVCSequenceParameterSetReader($sps) {
+ public function __construct($sps) {
$this->sps = $sps;
}
public function readData() {
$this->skipBits(8);
$this->skipBits(8);
- $profile = $this->getBits(8); // read profile
- $this->skipBits(16);
- $this->expGolombUe(); // read sps id
- if (in_array($profile, array(H264_PROFILE_HIGH, H264_PROFILE_HIGH10, H264_PROFILE_HIGH422, H264_PROFILE_HIGH444, H264_PROFILE_HIGH444_PREDICTIVE))) {
- if ($this->expGolombUe() == 3) {
- $this->skipBits(1);
- }
- $this->expGolombUe();
- $this->expGolombUe();
- $this->skipBits(1);
- if ($this->getBit()) {
- for ($i = 0; $i < 8; $i++) {
- if ($this->getBit()) {
- $size = $i < 6 ? 16 : 64;
- $lastScale = 8;
- $nextScale = 8;
- for ($j = 0; $j < $size; $j++) {
- if ($nextScale != 0) {
- $deltaScale = $this->expGolombUe();
- $nextScale = ($lastScale + $deltaScale + 256) % 256;
- }
- if ($nextScale != 0) {
- $lastScale = $nextScale;
- }
- }
- }
+ $profile = $this->getBits(8); // read profile
+ if ($profile > 0) {
+ $this->skipBits(8);
+ $level_idc = $this->getBits(8); // level_idc
+ $this->expGolombUe(); // seq_parameter_set_id // sps
+ $this->expGolombUe(); // log2_max_frame_num_minus4
+ $picOrderType = $this->expGolombUe(); // pic_order_cnt_type
+ if ($picOrderType == 0) {
+ $this->expGolombUe(); // log2_max_pic_order_cnt_lsb_minus4
+ } elseif ($picOrderType == 1) {
+ $this->skipBits(1); // delta_pic_order_always_zero_flag
+ $this->expGolombSe(); // offset_for_non_ref_pic
+ $this->expGolombSe(); // offset_for_top_to_bottom_field
+ $num_ref_frames_in_pic_order_cnt_cycle = $this->expGolombUe(); // num_ref_frames_in_pic_order_cnt_cycle
+ for ($i = 0; $i < $num_ref_frames_in_pic_order_cnt_cycle; $i++) {
+ $this->expGolombSe(); // offset_for_ref_frame[ i ]
}
}
- }
- $this->expGolombUe();
- $pocType = $this->expGolombUe();
- if ($pocType == 0) {
- $this->expGolombUe();
- } elseif ($pocType == 1) {
- $this->skipBits(1);
- $this->expGolombSe();
- $this->expGolombSe();
- $pocCycleLength = $this->expGolombUe();
- for ($i = 0; $i < $pocCycleLength; $i++) {
- $this->expGolombSe();
+ $this->expGolombUe(); // num_ref_frames
+ $this->skipBits(1); // gaps_in_frame_num_value_allowed_flag
+ $pic_width_in_mbs_minus1 = $this->expGolombUe(); // pic_width_in_mbs_minus1
+ $pic_height_in_map_units_minus1 = $this->expGolombUe(); // pic_height_in_map_units_minus1
+
+ $frame_mbs_only_flag = $this->getBits(1); // frame_mbs_only_flag
+ if ($frame_mbs_only_flag == 0) {
+ $this->skipBits(1); // mb_adaptive_frame_field_flag
+ }
+ $this->skipBits(1); // direct_8x8_inference_flag
+ $frame_cropping_flag = $this->getBits(1); // frame_cropping_flag
+
+ $frame_crop_left_offset = 0;
+ $frame_crop_right_offset = 0;
+ $frame_crop_top_offset = 0;
+ $frame_crop_bottom_offset = 0;
+
+ if ($frame_cropping_flag) {
+ $frame_crop_left_offset = $this->expGolombUe(); // frame_crop_left_offset
+ $frame_crop_right_offset = $this->expGolombUe(); // frame_crop_right_offset
+ $frame_crop_top_offset = $this->expGolombUe(); // frame_crop_top_offset
+ $frame_crop_bottom_offset = $this->expGolombUe(); // frame_crop_bottom_offset
}
+ $this->skipBits(1); // vui_parameters_present_flag
+ // etc
+
+ $this->width = (($pic_width_in_mbs_minus1 + 1) * 16) - ($frame_crop_left_offset * 2) - ($frame_crop_right_offset * 2);
+ $this->height = ((2 - $frame_mbs_only_flag) * ($pic_height_in_map_units_minus1 + 1) * 16) - ($frame_crop_top_offset * 2) - ($frame_crop_bottom_offset * 2);
}
- $this->expGolombUe();
- $this->skipBits(1);
- $this->width = ($this->expGolombUe() + 1) * 16;
- $heightMap = $this->expGolombUe() + 1;
- $this->height = (2 - $this->getBit()) * $heightMap * 16;
}
public function skipBits($bits) {
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