| author | ymh <ymh.work@gmail.com> |
| Mon, 14 Oct 2019 17:39:30 +0200 | |
| changeset 7 | cf61fcea0001 |
| parent 5 | 5e2f62d02dcd |
| child 16 | a86126ab1dd4 |
| permissions | -rw-r--r-- |
| 0 | 1 |
<?php |
2 |
///////////////////////////////////////////////////////////////// |
|
3 |
/// getID3() by James Heinrich <info@getid3.org> // |
|
4 |
// available at http://getid3.sourceforge.net // |
|
5 |
// or http://www.getid3.org // |
|
| 5 | 6 |
// also https://github.com/JamesHeinrich/getID3 // |
| 0 | 7 |
// // |
8 |
// FLV module by Seth Kaufman <sethØwhirl-i-gig*com> // |
|
9 |
// // |
|
10 |
// * version 0.1 (26 June 2005) // |
|
11 |
// // |
|
12 |
// // |
|
13 |
// * version 0.1.1 (15 July 2005) // |
|
14 |
// minor modifications by James Heinrich <info@getid3.org> // |
|
15 |
// // |
|
16 |
// * version 0.2 (22 February 2006) // |
|
17 |
// Support for On2 VP6 codec and meta information // |
|
18 |
// by Steve Webster <steve.websterØfeaturecreep*com> // |
|
19 |
// // |
|
20 |
// * version 0.3 (15 June 2006) // |
|
21 |
// Modified to not read entire file into memory // |
|
22 |
// by James Heinrich <info@getid3.org> // |
|
23 |
// // |
|
24 |
// * version 0.4 (07 December 2007) // |
|
25 |
// Bugfixes for incorrectly parsed FLV dimensions // |
|
26 |
// and incorrect parsing of onMetaTag // |
|
27 |
// by Evgeny Moysevich <moysevichØgmail*com> // |
|
28 |
// // |
|
29 |
// * version 0.5 (21 May 2009) // |
|
30 |
// Fixed parsing of audio tags and added additional codec // |
|
31 |
// details. The duration is now read from onMetaTag (if // |
|
32 |
// exists), rather than parsing whole file // |
|
33 |
// by Nigel Barnes <ngbarnesØhotmail*com> // |
|
34 |
// // |
|
35 |
// * version 0.6 (24 May 2009) // |
|
36 |
// Better parsing of files with h264 video // |
|
37 |
// by Evgeny Moysevich <moysevichØgmail*com> // |
|
38 |
// // |
|
39 |
// * version 0.6.1 (30 May 2011) // |
|
40 |
// prevent infinite loops in expGolombUe() // |
|
41 |
// // |
|
| 5 | 42 |
// * version 0.7.0 (16 Jul 2013) // |
43 |
// handle GETID3_FLV_VIDEO_VP6FLV_ALPHA // |
|
44 |
// improved AVCSequenceParameterSetReader::readData() // |
|
45 |
// by Xander Schouwerwou <schouwerwouØgmail*com> // |
|
46 |
// // |
|
| 0 | 47 |
///////////////////////////////////////////////////////////////// |
48 |
// // |
|
49 |
// module.audio-video.flv.php // |
|
50 |
// module for analyzing Shockwave Flash Video files // |
|
51 |
// dependencies: NONE // |
|
52 |
// /// |
|
53 |
///////////////////////////////////////////////////////////////// |
|
54 |
||
55 |
define('GETID3_FLV_TAG_AUDIO', 8); |
|
56 |
define('GETID3_FLV_TAG_VIDEO', 9); |
|
57 |
define('GETID3_FLV_TAG_META', 18); |
|
58 |
||
59 |
define('GETID3_FLV_VIDEO_H263', 2); |
|
60 |
define('GETID3_FLV_VIDEO_SCREEN', 3); |
|
61 |
define('GETID3_FLV_VIDEO_VP6FLV', 4); |
|
62 |
define('GETID3_FLV_VIDEO_VP6FLV_ALPHA', 5); |
|
63 |
define('GETID3_FLV_VIDEO_SCREENV2', 6); |
|
64 |
define('GETID3_FLV_VIDEO_H264', 7); |
|
65 |
||
66 |
define('H264_AVC_SEQUENCE_HEADER', 0); |
|
67 |
define('H264_PROFILE_BASELINE', 66); |
|
68 |
define('H264_PROFILE_MAIN', 77); |
|
69 |
define('H264_PROFILE_EXTENDED', 88); |
|
70 |
define('H264_PROFILE_HIGH', 100); |
|
71 |
define('H264_PROFILE_HIGH10', 110); |
|
72 |
define('H264_PROFILE_HIGH422', 122); |
|
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define('H264_PROFILE_HIGH444', 144); |
|
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define('H264_PROFILE_HIGH444_PREDICTIVE', 244); |
|
75 |
||
| 5 | 76 |
class getid3_flv extends getid3_handler { |
77 |
||
78 |
const magic = 'FLV'; |
|
79 |
||
| 0 | 80 |
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 |
81 |
||
82 |
public function Analyze() { |
|
83 |
$info = &$this->getid3->info; |
|
84 |
||
| 5 | 85 |
$this->fseek($info['avdataoffset']); |
| 0 | 86 |
|
87 |
$FLVdataLength = $info['avdataend'] - $info['avdataoffset']; |
|
| 5 | 88 |
$FLVheader = $this->fread(5); |
| 0 | 89 |
|
90 |
$info['fileformat'] = 'flv'; |
|
91 |
$info['flv']['header']['signature'] = substr($FLVheader, 0, 3); |
|
92 |
$info['flv']['header']['version'] = getid3_lib::BigEndian2Int(substr($FLVheader, 3, 1)); |
|
93 |
$TypeFlags = getid3_lib::BigEndian2Int(substr($FLVheader, 4, 1)); |
|
94 |
||
| 5 | 95 |
if ($info['flv']['header']['signature'] != self::magic) { |
|
7
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
96 |
$this->error('Expecting "'.getid3_lib::PrintHexBytes(self::magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($info['flv']['header']['signature']).'"'); |
| 5 | 97 |
unset($info['flv'], $info['fileformat']); |
| 0 | 98 |
return false; |
99 |
} |
|
100 |
||
101 |
$info['flv']['header']['hasAudio'] = (bool) ($TypeFlags & 0x04); |
|
102 |
$info['flv']['header']['hasVideo'] = (bool) ($TypeFlags & 0x01); |
|
103 |
||
| 5 | 104 |
$FrameSizeDataLength = getid3_lib::BigEndian2Int($this->fread(4)); |
| 0 | 105 |
$FLVheaderFrameLength = 9; |
106 |
if ($FrameSizeDataLength > $FLVheaderFrameLength) { |
|
| 5 | 107 |
$this->fseek($FrameSizeDataLength - $FLVheaderFrameLength, SEEK_CUR); |
| 0 | 108 |
} |
109 |
$Duration = 0; |
|
110 |
$found_video = false; |
|
111 |
$found_audio = false; |
|
112 |
$found_meta = false; |
|
113 |
$found_valid_meta_playtime = false; |
|
114 |
$tagParseCount = 0; |
|
115 |
$info['flv']['framecount'] = array('total'=>0, 'audio'=>0, 'video'=>0); |
|
116 |
$flv_framecount = &$info['flv']['framecount']; |
|
| 5 | 117 |
while ((($this->ftell() + 16) < $info['avdataend']) && (($tagParseCount++ <= $this->max_frames) || !$found_valid_meta_playtime)) { |
118 |
$ThisTagHeader = $this->fread(16); |
|
| 0 | 119 |
|
120 |
$PreviousTagLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 0, 4)); |
|
121 |
$TagType = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 4, 1)); |
|
122 |
$DataLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 5, 3)); |
|
123 |
$Timestamp = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 8, 3)); |
|
124 |
$LastHeaderByte = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 15, 1)); |
|
| 5 | 125 |
$NextOffset = $this->ftell() - 1 + $DataLength; |
| 0 | 126 |
if ($Timestamp > $Duration) { |
127 |
$Duration = $Timestamp; |
|
128 |
} |
|
129 |
||
130 |
$flv_framecount['total']++; |
|
131 |
switch ($TagType) { |
|
132 |
case GETID3_FLV_TAG_AUDIO: |
|
133 |
$flv_framecount['audio']++; |
|
134 |
if (!$found_audio) { |
|
135 |
$found_audio = true; |
|
136 |
$info['flv']['audio']['audioFormat'] = ($LastHeaderByte >> 4) & 0x0F; |
|
137 |
$info['flv']['audio']['audioRate'] = ($LastHeaderByte >> 2) & 0x03; |
|
138 |
$info['flv']['audio']['audioSampleSize'] = ($LastHeaderByte >> 1) & 0x01; |
|
139 |
$info['flv']['audio']['audioType'] = $LastHeaderByte & 0x01; |
|
140 |
} |
|
141 |
break; |
|
142 |
||
143 |
case GETID3_FLV_TAG_VIDEO: |
|
144 |
$flv_framecount['video']++; |
|
145 |
if (!$found_video) { |
|
146 |
$found_video = true; |
|
147 |
$info['flv']['video']['videoCodec'] = $LastHeaderByte & 0x07; |
|
148 |
||
| 5 | 149 |
$FLVvideoHeader = $this->fread(11); |
| 0 | 150 |
|
151 |
if ($info['flv']['video']['videoCodec'] == GETID3_FLV_VIDEO_H264) { |
|
152 |
// this code block contributed by: moysevichØgmail*com |
|
153 |
||
154 |
$AVCPacketType = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 0, 1)); |
|
155 |
if ($AVCPacketType == H264_AVC_SEQUENCE_HEADER) { |
|
156 |
// read AVCDecoderConfigurationRecord |
|
157 |
$configurationVersion = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 1)); |
|
158 |
$AVCProfileIndication = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 1)); |
|
159 |
$profile_compatibility = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 1)); |
|
160 |
$lengthSizeMinusOne = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 7, 1)); |
|
161 |
$numOfSequenceParameterSets = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 8, 1)); |
|
162 |
||
163 |
if (($numOfSequenceParameterSets & 0x1F) != 0) { |
|
164 |
// there is at least one SequenceParameterSet |
|
165 |
// read size of the first SequenceParameterSet |
|
166 |
//$spsSize = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 9, 2)); |
|
167 |
$spsSize = getid3_lib::LittleEndian2Int(substr($FLVvideoHeader, 9, 2)); |
|
168 |
// read the first SequenceParameterSet |
|
| 5 | 169 |
$sps = $this->fread($spsSize); |
| 0 | 170 |
if (strlen($sps) == $spsSize) { // make sure that whole SequenceParameterSet was red |
171 |
$spsReader = new AVCSequenceParameterSetReader($sps); |
|
172 |
$spsReader->readData(); |
|
173 |
$info['video']['resolution_x'] = $spsReader->getWidth(); |
|
174 |
$info['video']['resolution_y'] = $spsReader->getHeight(); |
|
175 |
} |
|
176 |
} |
|
177 |
} |
|
178 |
// end: moysevichØgmail*com |
|
179 |
||
180 |
} elseif ($info['flv']['video']['videoCodec'] == GETID3_FLV_VIDEO_H263) { |
|
181 |
||
182 |
$PictureSizeType = (getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 3, 2))) >> 7; |
|
183 |
$PictureSizeType = $PictureSizeType & 0x0007; |
|
184 |
$info['flv']['header']['videoSizeType'] = $PictureSizeType; |
|
185 |
switch ($PictureSizeType) { |
|
186 |
case 0: |
|
187 |
//$PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2)); |
|
188 |
//$PictureSizeEnc <<= 1; |
|
189 |
//$info['video']['resolution_x'] = ($PictureSizeEnc & 0xFF00) >> 8; |
|
190 |
//$PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 2)); |
|
191 |
//$PictureSizeEnc <<= 1; |
|
192 |
//$info['video']['resolution_y'] = ($PictureSizeEnc & 0xFF00) >> 8; |
|
193 |
||
| 5 | 194 |
$PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 2)) >> 7; |
195 |
$PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2)) >> 7; |
|
| 0 | 196 |
$info['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFF; |
197 |
$info['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFF; |
|
198 |
break; |
|
199 |
||
200 |
case 1: |
|
| 5 | 201 |
$PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 3)) >> 7; |
202 |
$PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 3)) >> 7; |
|
| 0 | 203 |
$info['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFFFF; |
204 |
$info['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFFFF; |
|
205 |
break; |
|
206 |
||
207 |
case 2: |
|
208 |
$info['video']['resolution_x'] = 352; |
|
209 |
$info['video']['resolution_y'] = 288; |
|
210 |
break; |
|
211 |
||
212 |
case 3: |
|
213 |
$info['video']['resolution_x'] = 176; |
|
214 |
$info['video']['resolution_y'] = 144; |
|
215 |
break; |
|
216 |
||
217 |
case 4: |
|
218 |
$info['video']['resolution_x'] = 128; |
|
219 |
$info['video']['resolution_y'] = 96; |
|
220 |
break; |
|
221 |
||
222 |
case 5: |
|
223 |
$info['video']['resolution_x'] = 320; |
|
224 |
$info['video']['resolution_y'] = 240; |
|
225 |
break; |
|
226 |
||
227 |
case 6: |
|
228 |
$info['video']['resolution_x'] = 160; |
|
229 |
$info['video']['resolution_y'] = 120; |
|
230 |
break; |
|
231 |
||
232 |
default: |
|
233 |
$info['video']['resolution_x'] = 0; |
|
234 |
$info['video']['resolution_y'] = 0; |
|
235 |
break; |
|
236 |
||
237 |
} |
|
| 5 | 238 |
|
239 |
} elseif ($info['flv']['video']['videoCodec'] == GETID3_FLV_VIDEO_VP6FLV_ALPHA) { |
|
240 |
||
241 |
/* contributed by schouwerwouØgmail*com */ |
|
242 |
if (!isset($info['video']['resolution_x'])) { // only when meta data isn't set |
|
243 |
$PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 2)); |
|
244 |
$PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 7, 2)); |
|
245 |
$info['video']['resolution_x'] = ($PictureSizeEnc['x'] & 0xFF) << 3; |
|
246 |
$info['video']['resolution_y'] = ($PictureSizeEnc['y'] & 0xFF) << 3; |
|
247 |
} |
|
248 |
/* end schouwerwouØgmail*com */ |
|
249 |
||
| 0 | 250 |
} |
| 5 | 251 |
if (!empty($info['video']['resolution_x']) && !empty($info['video']['resolution_y'])) { |
252 |
$info['video']['pixel_aspect_ratio'] = $info['video']['resolution_x'] / $info['video']['resolution_y']; |
|
253 |
} |
|
| 0 | 254 |
} |
255 |
break; |
|
256 |
||
257 |
// Meta tag |
|
258 |
case GETID3_FLV_TAG_META: |
|
259 |
if (!$found_meta) { |
|
260 |
$found_meta = true; |
|
| 5 | 261 |
$this->fseek(-1, SEEK_CUR); |
262 |
$datachunk = $this->fread($DataLength); |
|
| 0 | 263 |
$AMFstream = new AMFStream($datachunk); |
264 |
$reader = new AMFReader($AMFstream); |
|
265 |
$eventName = $reader->readData(); |
|
266 |
$info['flv']['meta'][$eventName] = $reader->readData(); |
|
267 |
unset($reader); |
|
268 |
||
269 |
$copykeys = array('framerate'=>'frame_rate', 'width'=>'resolution_x', 'height'=>'resolution_y', 'audiodatarate'=>'bitrate', 'videodatarate'=>'bitrate'); |
|
270 |
foreach ($copykeys as $sourcekey => $destkey) { |
|
271 |
if (isset($info['flv']['meta']['onMetaData'][$sourcekey])) { |
|
272 |
switch ($sourcekey) { |
|
273 |
case 'width': |
|
274 |
case 'height': |
|
275 |
$info['video'][$destkey] = intval(round($info['flv']['meta']['onMetaData'][$sourcekey])); |
|
276 |
break; |
|
277 |
case 'audiodatarate': |
|
278 |
$info['audio'][$destkey] = getid3_lib::CastAsInt(round($info['flv']['meta']['onMetaData'][$sourcekey] * 1000)); |
|
279 |
break; |
|
280 |
case 'videodatarate': |
|
281 |
case 'frame_rate': |
|
282 |
default: |
|
283 |
$info['video'][$destkey] = $info['flv']['meta']['onMetaData'][$sourcekey]; |
|
284 |
break; |
|
285 |
} |
|
286 |
} |
|
287 |
} |
|
288 |
if (!empty($info['flv']['meta']['onMetaData']['duration'])) { |
|
289 |
$found_valid_meta_playtime = true; |
|
290 |
} |
|
291 |
} |
|
292 |
break; |
|
293 |
||
294 |
default: |
|
295 |
// noop |
|
296 |
break; |
|
297 |
} |
|
| 5 | 298 |
$this->fseek($NextOffset); |
| 0 | 299 |
} |
300 |
||
301 |
$info['playtime_seconds'] = $Duration / 1000; |
|
302 |
if ($info['playtime_seconds'] > 0) { |
|
303 |
$info['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds']; |
|
304 |
} |
|
305 |
||
306 |
if ($info['flv']['header']['hasAudio']) { |
|
| 5 | 307 |
$info['audio']['codec'] = self::audioFormatLookup($info['flv']['audio']['audioFormat']); |
308 |
$info['audio']['sample_rate'] = self::audioRateLookup($info['flv']['audio']['audioRate']); |
|
309 |
$info['audio']['bits_per_sample'] = self::audioBitDepthLookup($info['flv']['audio']['audioSampleSize']); |
|
| 0 | 310 |
|
311 |
$info['audio']['channels'] = $info['flv']['audio']['audioType'] + 1; // 0=mono,1=stereo |
|
312 |
$info['audio']['lossless'] = ($info['flv']['audio']['audioFormat'] ? false : true); // 0=uncompressed |
|
313 |
$info['audio']['dataformat'] = 'flv'; |
|
314 |
} |
|
315 |
if (!empty($info['flv']['header']['hasVideo'])) { |
|
| 5 | 316 |
$info['video']['codec'] = self::videoCodecLookup($info['flv']['video']['videoCodec']); |
| 0 | 317 |
$info['video']['dataformat'] = 'flv'; |
318 |
$info['video']['lossless'] = false; |
|
319 |
} |
|
320 |
||
321 |
// Set information from meta |
|
322 |
if (!empty($info['flv']['meta']['onMetaData']['duration'])) { |
|
323 |
$info['playtime_seconds'] = $info['flv']['meta']['onMetaData']['duration']; |
|
324 |
$info['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds']; |
|
325 |
} |
|
326 |
if (isset($info['flv']['meta']['onMetaData']['audiocodecid'])) { |
|
| 5 | 327 |
$info['audio']['codec'] = self::audioFormatLookup($info['flv']['meta']['onMetaData']['audiocodecid']); |
| 0 | 328 |
} |
329 |
if (isset($info['flv']['meta']['onMetaData']['videocodecid'])) { |
|
| 5 | 330 |
$info['video']['codec'] = self::videoCodecLookup($info['flv']['meta']['onMetaData']['videocodecid']); |
| 0 | 331 |
} |
332 |
return true; |
|
333 |
} |
|
334 |
||
335 |
||
| 5 | 336 |
public static function audioFormatLookup($id) { |
337 |
static $lookup = array( |
|
| 0 | 338 |
0 => 'Linear PCM, platform endian', |
339 |
1 => 'ADPCM', |
|
340 |
2 => 'mp3', |
|
341 |
3 => 'Linear PCM, little endian', |
|
342 |
4 => 'Nellymoser 16kHz mono', |
|
343 |
5 => 'Nellymoser 8kHz mono', |
|
344 |
6 => 'Nellymoser', |
|
345 |
7 => 'G.711A-law logarithmic PCM', |
|
346 |
8 => 'G.711 mu-law logarithmic PCM', |
|
347 |
9 => 'reserved', |
|
348 |
10 => 'AAC', |
|
| 5 | 349 |
11 => 'Speex', |
| 0 | 350 |
12 => false, // unknown? |
351 |
13 => false, // unknown? |
|
352 |
14 => 'mp3 8kHz', |
|
353 |
15 => 'Device-specific sound', |
|
354 |
); |
|
| 5 | 355 |
return (isset($lookup[$id]) ? $lookup[$id] : false); |
| 0 | 356 |
} |
357 |
||
| 5 | 358 |
public static function audioRateLookup($id) { |
359 |
static $lookup = array( |
|
| 0 | 360 |
0 => 5500, |
361 |
1 => 11025, |
|
362 |
2 => 22050, |
|
363 |
3 => 44100, |
|
364 |
); |
|
| 5 | 365 |
return (isset($lookup[$id]) ? $lookup[$id] : false); |
| 0 | 366 |
} |
367 |
||
| 5 | 368 |
public static function audioBitDepthLookup($id) { |
369 |
static $lookup = array( |
|
| 0 | 370 |
0 => 8, |
371 |
1 => 16, |
|
372 |
); |
|
| 5 | 373 |
return (isset($lookup[$id]) ? $lookup[$id] : false); |
| 0 | 374 |
} |
375 |
||
| 5 | 376 |
public static function videoCodecLookup($id) { |
377 |
static $lookup = array( |
|
| 0 | 378 |
GETID3_FLV_VIDEO_H263 => 'Sorenson H.263', |
379 |
GETID3_FLV_VIDEO_SCREEN => 'Screen video', |
|
380 |
GETID3_FLV_VIDEO_VP6FLV => 'On2 VP6', |
|
381 |
GETID3_FLV_VIDEO_VP6FLV_ALPHA => 'On2 VP6 with alpha channel', |
|
382 |
GETID3_FLV_VIDEO_SCREENV2 => 'Screen video v2', |
|
383 |
GETID3_FLV_VIDEO_H264 => 'Sorenson H.264', |
|
384 |
); |
|
| 5 | 385 |
return (isset($lookup[$id]) ? $lookup[$id] : false); |
| 0 | 386 |
} |
387 |
} |
|
388 |
||
389 |
class AMFStream { |
|
390 |
public $bytes; |
|
391 |
public $pos; |
|
392 |
||
| 5 | 393 |
public function __construct(&$bytes) { |
| 0 | 394 |
$this->bytes =& $bytes; |
395 |
$this->pos = 0; |
|
396 |
} |
|
397 |
||
398 |
public function readByte() { |
|
399 |
return getid3_lib::BigEndian2Int(substr($this->bytes, $this->pos++, 1)); |
|
400 |
} |
|
401 |
||
402 |
public function readInt() { |
|
403 |
return ($this->readByte() << 8) + $this->readByte(); |
|
404 |
} |
|
405 |
||
406 |
public function readLong() { |
|
407 |
return ($this->readByte() << 24) + ($this->readByte() << 16) + ($this->readByte() << 8) + $this->readByte(); |
|
408 |
} |
|
409 |
||
410 |
public function readDouble() { |
|
411 |
return getid3_lib::BigEndian2Float($this->read(8)); |
|
412 |
} |
|
413 |
||
414 |
public function readUTF() { |
|
415 |
$length = $this->readInt(); |
|
416 |
return $this->read($length); |
|
417 |
} |
|
418 |
||
419 |
public function readLongUTF() { |
|
420 |
$length = $this->readLong(); |
|
421 |
return $this->read($length); |
|
422 |
} |
|
423 |
||
424 |
public function read($length) { |
|
425 |
$val = substr($this->bytes, $this->pos, $length); |
|
426 |
$this->pos += $length; |
|
427 |
return $val; |
|
428 |
} |
|
429 |
||
430 |
public function peekByte() { |
|
431 |
$pos = $this->pos; |
|
432 |
$val = $this->readByte(); |
|
433 |
$this->pos = $pos; |
|
434 |
return $val; |
|
435 |
} |
|
436 |
||
437 |
public function peekInt() { |
|
438 |
$pos = $this->pos; |
|
439 |
$val = $this->readInt(); |
|
440 |
$this->pos = $pos; |
|
441 |
return $val; |
|
442 |
} |
|
443 |
||
444 |
public function peekLong() { |
|
445 |
$pos = $this->pos; |
|
446 |
$val = $this->readLong(); |
|
447 |
$this->pos = $pos; |
|
448 |
return $val; |
|
449 |
} |
|
450 |
||
451 |
public function peekDouble() { |
|
452 |
$pos = $this->pos; |
|
453 |
$val = $this->readDouble(); |
|
454 |
$this->pos = $pos; |
|
455 |
return $val; |
|
456 |
} |
|
457 |
||
458 |
public function peekUTF() { |
|
459 |
$pos = $this->pos; |
|
460 |
$val = $this->readUTF(); |
|
461 |
$this->pos = $pos; |
|
462 |
return $val; |
|
463 |
} |
|
464 |
||
465 |
public function peekLongUTF() { |
|
466 |
$pos = $this->pos; |
|
467 |
$val = $this->readLongUTF(); |
|
468 |
$this->pos = $pos; |
|
469 |
return $val; |
|
470 |
} |
|
471 |
} |
|
472 |
||
473 |
class AMFReader { |
|
474 |
public $stream; |
|
475 |
||
| 5 | 476 |
public function __construct(&$stream) { |
| 0 | 477 |
$this->stream =& $stream; |
478 |
} |
|
479 |
||
480 |
public function readData() { |
|
481 |
$value = null; |
|
482 |
||
483 |
$type = $this->stream->readByte(); |
|
484 |
switch ($type) { |
|
485 |
||
486 |
// Double |
|
487 |
case 0: |
|
488 |
$value = $this->readDouble(); |
|
489 |
break; |
|
490 |
||
491 |
// Boolean |
|
492 |
case 1: |
|
493 |
$value = $this->readBoolean(); |
|
494 |
break; |
|
495 |
||
496 |
// String |
|
497 |
case 2: |
|
498 |
$value = $this->readString(); |
|
499 |
break; |
|
500 |
||
501 |
// Object |
|
502 |
case 3: |
|
503 |
$value = $this->readObject(); |
|
504 |
break; |
|
505 |
||
506 |
// null |
|
507 |
case 6: |
|
508 |
return null; |
|
509 |
break; |
|
510 |
||
511 |
// Mixed array |
|
512 |
case 8: |
|
513 |
$value = $this->readMixedArray(); |
|
514 |
break; |
|
515 |
||
516 |
// Array |
|
517 |
case 10: |
|
518 |
$value = $this->readArray(); |
|
519 |
break; |
|
520 |
||
521 |
// Date |
|
522 |
case 11: |
|
523 |
$value = $this->readDate(); |
|
524 |
break; |
|
525 |
||
526 |
// Long string |
|
527 |
case 13: |
|
528 |
$value = $this->readLongString(); |
|
529 |
break; |
|
530 |
||
531 |
// XML (handled as string) |
|
532 |
case 15: |
|
533 |
$value = $this->readXML(); |
|
534 |
break; |
|
535 |
||
536 |
// Typed object (handled as object) |
|
537 |
case 16: |
|
538 |
$value = $this->readTypedObject(); |
|
539 |
break; |
|
540 |
||
541 |
// Long string |
|
542 |
default: |
|
543 |
$value = '(unknown or unsupported data type)'; |
|
|
7
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
544 |
break; |
| 0 | 545 |
} |
546 |
||
547 |
return $value; |
|
548 |
} |
|
549 |
||
550 |
public function readDouble() { |
|
551 |
return $this->stream->readDouble(); |
|
552 |
} |
|
553 |
||
554 |
public function readBoolean() { |
|
555 |
return $this->stream->readByte() == 1; |
|
556 |
} |
|
557 |
||
558 |
public function readString() { |
|
559 |
return $this->stream->readUTF(); |
|
560 |
} |
|
561 |
||
562 |
public function readObject() { |
|
563 |
// Get highest numerical index - ignored |
|
564 |
// $highestIndex = $this->stream->readLong(); |
|
565 |
||
566 |
$data = array(); |
|
567 |
||
568 |
while ($key = $this->stream->readUTF()) { |
|
569 |
$data[$key] = $this->readData(); |
|
570 |
} |
|
571 |
// Mixed array record ends with empty string (0x00 0x00) and 0x09 |
|
572 |
if (($key == '') && ($this->stream->peekByte() == 0x09)) { |
|
573 |
// Consume byte |
|
574 |
$this->stream->readByte(); |
|
575 |
} |
|
576 |
return $data; |
|
577 |
} |
|
578 |
||
579 |
public function readMixedArray() { |
|
580 |
// Get highest numerical index - ignored |
|
581 |
$highestIndex = $this->stream->readLong(); |
|
582 |
||
583 |
$data = array(); |
|
584 |
||
585 |
while ($key = $this->stream->readUTF()) { |
|
586 |
if (is_numeric($key)) { |
|
587 |
$key = (float) $key; |
|
588 |
} |
|
589 |
$data[$key] = $this->readData(); |
|
590 |
} |
|
591 |
// Mixed array record ends with empty string (0x00 0x00) and 0x09 |
|
592 |
if (($key == '') && ($this->stream->peekByte() == 0x09)) { |
|
593 |
// Consume byte |
|
594 |
$this->stream->readByte(); |
|
595 |
} |
|
596 |
||
597 |
return $data; |
|
598 |
} |
|
599 |
||
600 |
public function readArray() { |
|
601 |
$length = $this->stream->readLong(); |
|
602 |
$data = array(); |
|
603 |
||
604 |
for ($i = 0; $i < $length; $i++) { |
|
605 |
$data[] = $this->readData(); |
|
606 |
} |
|
607 |
return $data; |
|
608 |
} |
|
609 |
||
610 |
public function readDate() { |
|
611 |
$timestamp = $this->stream->readDouble(); |
|
612 |
$timezone = $this->stream->readInt(); |
|
613 |
return $timestamp; |
|
614 |
} |
|
615 |
||
616 |
public function readLongString() { |
|
617 |
return $this->stream->readLongUTF(); |
|
618 |
} |
|
619 |
||
620 |
public function readXML() { |
|
621 |
return $this->stream->readLongUTF(); |
|
622 |
} |
|
623 |
||
624 |
public function readTypedObject() { |
|
625 |
$className = $this->stream->readUTF(); |
|
626 |
return $this->readObject(); |
|
627 |
} |
|
628 |
} |
|
629 |
||
630 |
class AVCSequenceParameterSetReader { |
|
631 |
public $sps; |
|
632 |
public $start = 0; |
|
633 |
public $currentBytes = 0; |
|
634 |
public $currentBits = 0; |
|
635 |
public $width; |
|
636 |
public $height; |
|
637 |
||
| 5 | 638 |
public function __construct($sps) { |
| 0 | 639 |
$this->sps = $sps; |
640 |
} |
|
641 |
||
642 |
public function readData() { |
|
643 |
$this->skipBits(8); |
|
644 |
$this->skipBits(8); |
|
| 5 | 645 |
$profile = $this->getBits(8); // read profile |
646 |
if ($profile > 0) { |
|
647 |
$this->skipBits(8); |
|
648 |
$level_idc = $this->getBits(8); // level_idc |
|
649 |
$this->expGolombUe(); // seq_parameter_set_id // sps |
|
650 |
$this->expGolombUe(); // log2_max_frame_num_minus4 |
|
651 |
$picOrderType = $this->expGolombUe(); // pic_order_cnt_type |
|
652 |
if ($picOrderType == 0) { |
|
653 |
$this->expGolombUe(); // log2_max_pic_order_cnt_lsb_minus4 |
|
654 |
} elseif ($picOrderType == 1) { |
|
655 |
$this->skipBits(1); // delta_pic_order_always_zero_flag |
|
656 |
$this->expGolombSe(); // offset_for_non_ref_pic |
|
657 |
$this->expGolombSe(); // offset_for_top_to_bottom_field |
|
658 |
$num_ref_frames_in_pic_order_cnt_cycle = $this->expGolombUe(); // num_ref_frames_in_pic_order_cnt_cycle |
|
659 |
for ($i = 0; $i < $num_ref_frames_in_pic_order_cnt_cycle; $i++) { |
|
660 |
$this->expGolombSe(); // offset_for_ref_frame[ i ] |
|
| 0 | 661 |
} |
662 |
} |
|
| 5 | 663 |
$this->expGolombUe(); // num_ref_frames |
664 |
$this->skipBits(1); // gaps_in_frame_num_value_allowed_flag |
|
665 |
$pic_width_in_mbs_minus1 = $this->expGolombUe(); // pic_width_in_mbs_minus1 |
|
666 |
$pic_height_in_map_units_minus1 = $this->expGolombUe(); // pic_height_in_map_units_minus1 |
|
667 |
||
668 |
$frame_mbs_only_flag = $this->getBits(1); // frame_mbs_only_flag |
|
669 |
if ($frame_mbs_only_flag == 0) { |
|
670 |
$this->skipBits(1); // mb_adaptive_frame_field_flag |
|
671 |
} |
|
672 |
$this->skipBits(1); // direct_8x8_inference_flag |
|
673 |
$frame_cropping_flag = $this->getBits(1); // frame_cropping_flag |
|
674 |
||
675 |
$frame_crop_left_offset = 0; |
|
676 |
$frame_crop_right_offset = 0; |
|
677 |
$frame_crop_top_offset = 0; |
|
678 |
$frame_crop_bottom_offset = 0; |
|
679 |
||
680 |
if ($frame_cropping_flag) { |
|
681 |
$frame_crop_left_offset = $this->expGolombUe(); // frame_crop_left_offset |
|
682 |
$frame_crop_right_offset = $this->expGolombUe(); // frame_crop_right_offset |
|
683 |
$frame_crop_top_offset = $this->expGolombUe(); // frame_crop_top_offset |
|
684 |
$frame_crop_bottom_offset = $this->expGolombUe(); // frame_crop_bottom_offset |
|
685 |
} |
|
686 |
$this->skipBits(1); // vui_parameters_present_flag |
|
687 |
// etc |
|
688 |
||
689 |
$this->width = (($pic_width_in_mbs_minus1 + 1) * 16) - ($frame_crop_left_offset * 2) - ($frame_crop_right_offset * 2); |
|
690 |
$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); |
|
| 0 | 691 |
} |
692 |
} |
|
693 |
||
694 |
public function skipBits($bits) { |
|
695 |
$newBits = $this->currentBits + $bits; |
|
696 |
$this->currentBytes += (int)floor($newBits / 8); |
|
697 |
$this->currentBits = $newBits % 8; |
|
698 |
} |
|
699 |
||
700 |
public function getBit() { |
|
701 |
$result = (getid3_lib::BigEndian2Int(substr($this->sps, $this->currentBytes, 1)) >> (7 - $this->currentBits)) & 0x01; |
|
702 |
$this->skipBits(1); |
|
703 |
return $result; |
|
704 |
} |
|
705 |
||
706 |
public function getBits($bits) { |
|
707 |
$result = 0; |
|
708 |
for ($i = 0; $i < $bits; $i++) { |
|
709 |
$result = ($result << 1) + $this->getBit(); |
|
710 |
} |
|
711 |
return $result; |
|
712 |
} |
|
713 |
||
714 |
public function expGolombUe() { |
|
715 |
$significantBits = 0; |
|
716 |
$bit = $this->getBit(); |
|
717 |
while ($bit == 0) { |
|
718 |
$significantBits++; |
|
719 |
$bit = $this->getBit(); |
|
720 |
||
721 |
if ($significantBits > 31) { |
|
722 |
// something is broken, this is an emergency escape to prevent infinite loops |
|
723 |
return 0; |
|
724 |
} |
|
725 |
} |
|
726 |
return (1 << $significantBits) + $this->getBits($significantBits) - 1; |
|
727 |
} |
|
728 |
||
729 |
public function expGolombSe() { |
|
730 |
$result = $this->expGolombUe(); |
|
731 |
if (($result & 0x01) == 0) { |
|
732 |
return -($result >> 1); |
|
733 |
} else { |
|
734 |
return ($result + 1) >> 1; |
|
735 |
} |
|
736 |
} |
|
737 |
||
738 |
public function getWidth() { |
|
739 |
return $this->width; |
|
740 |
} |
|
741 |
||
742 |
public function getHeight() { |
|
743 |
return $this->height; |
|
744 |
} |
|
|
7
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
745 |
} |