|
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 // |
|
|
6 |
// // |
|
|
7 |
// FLV module by Seth Kaufman <sethØwhirl-i-gig*com> // |
|
|
8 |
// // |
|
|
9 |
// * version 0.1 (26 June 2005) // |
|
|
10 |
// // |
|
|
11 |
// // |
|
|
12 |
// * version 0.1.1 (15 July 2005) // |
|
|
13 |
// minor modifications by James Heinrich <info@getid3.org> // |
|
|
14 |
// // |
|
|
15 |
// * version 0.2 (22 February 2006) // |
|
|
16 |
// Support for On2 VP6 codec and meta information // |
|
|
17 |
// by Steve Webster <steve.websterØfeaturecreep*com> // |
|
|
18 |
// // |
|
|
19 |
// * version 0.3 (15 June 2006) // |
|
|
20 |
// Modified to not read entire file into memory // |
|
|
21 |
// by James Heinrich <info@getid3.org> // |
|
|
22 |
// // |
|
|
23 |
// * version 0.4 (07 December 2007) // |
|
|
24 |
// Bugfixes for incorrectly parsed FLV dimensions // |
|
|
25 |
// and incorrect parsing of onMetaTag // |
|
|
26 |
// by Evgeny Moysevich <moysevichØgmail*com> // |
|
|
27 |
// // |
|
|
28 |
// * version 0.5 (21 May 2009) // |
|
|
29 |
// Fixed parsing of audio tags and added additional codec // |
|
|
30 |
// details. The duration is now read from onMetaTag (if // |
|
|
31 |
// exists), rather than parsing whole file // |
|
|
32 |
// by Nigel Barnes <ngbarnesØhotmail*com> // |
|
|
33 |
// // |
|
|
34 |
// * version 0.6 (24 May 2009) // |
|
|
35 |
// Better parsing of files with h264 video // |
|
|
36 |
// by Evgeny Moysevich <moysevichØgmail*com> // |
|
|
37 |
// // |
|
|
38 |
// * version 0.6.1 (30 May 2011) // |
|
|
39 |
// prevent infinite loops in expGolombUe() // |
|
|
40 |
// // |
|
|
41 |
///////////////////////////////////////////////////////////////// |
|
|
42 |
// // |
|
|
43 |
// module.audio-video.flv.php // |
|
|
44 |
// module for analyzing Shockwave Flash Video files // |
|
|
45 |
// dependencies: NONE // |
|
|
46 |
// /// |
|
|
47 |
///////////////////////////////////////////////////////////////// |
|
|
48 |
|
|
|
49 |
define('GETID3_FLV_TAG_AUDIO', 8); |
|
|
50 |
define('GETID3_FLV_TAG_VIDEO', 9); |
|
|
51 |
define('GETID3_FLV_TAG_META', 18); |
|
|
52 |
|
|
|
53 |
define('GETID3_FLV_VIDEO_H263', 2); |
|
|
54 |
define('GETID3_FLV_VIDEO_SCREEN', 3); |
|
|
55 |
define('GETID3_FLV_VIDEO_VP6FLV', 4); |
|
|
56 |
define('GETID3_FLV_VIDEO_VP6FLV_ALPHA', 5); |
|
|
57 |
define('GETID3_FLV_VIDEO_SCREENV2', 6); |
|
|
58 |
define('GETID3_FLV_VIDEO_H264', 7); |
|
|
59 |
|
|
|
60 |
define('H264_AVC_SEQUENCE_HEADER', 0); |
|
|
61 |
define('H264_PROFILE_BASELINE', 66); |
|
|
62 |
define('H264_PROFILE_MAIN', 77); |
|
|
63 |
define('H264_PROFILE_EXTENDED', 88); |
|
|
64 |
define('H264_PROFILE_HIGH', 100); |
|
|
65 |
define('H264_PROFILE_HIGH10', 110); |
|
|
66 |
define('H264_PROFILE_HIGH422', 122); |
|
|
67 |
define('H264_PROFILE_HIGH444', 144); |
|
|
68 |
define('H264_PROFILE_HIGH444_PREDICTIVE', 244); |
|
|
69 |
|
|
|
70 |
class getid3_flv extends getid3_handler |
|
|
71 |
{ |
|
|
72 |
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 |
|
|
73 |
|
|
|
74 |
public function Analyze() { |
|
|
75 |
$info = &$this->getid3->info; |
|
|
76 |
|
|
|
77 |
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET); |
|
|
78 |
|
|
|
79 |
$FLVdataLength = $info['avdataend'] - $info['avdataoffset']; |
|
|
80 |
$FLVheader = fread($this->getid3->fp, 5); |
|
|
81 |
|
|
|
82 |
$info['fileformat'] = 'flv'; |
|
|
83 |
$info['flv']['header']['signature'] = substr($FLVheader, 0, 3); |
|
|
84 |
$info['flv']['header']['version'] = getid3_lib::BigEndian2Int(substr($FLVheader, 3, 1)); |
|
|
85 |
$TypeFlags = getid3_lib::BigEndian2Int(substr($FLVheader, 4, 1)); |
|
|
86 |
|
|
|
87 |
$magic = 'FLV'; |
|
|
88 |
if ($info['flv']['header']['signature'] != $magic) { |
|
|
89 |
$info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($info['flv']['header']['signature']).'"'; |
|
|
90 |
unset($info['flv']); |
|
|
91 |
unset($info['fileformat']); |
|
|
92 |
return false; |
|
|
93 |
} |
|
|
94 |
|
|
|
95 |
$info['flv']['header']['hasAudio'] = (bool) ($TypeFlags & 0x04); |
|
|
96 |
$info['flv']['header']['hasVideo'] = (bool) ($TypeFlags & 0x01); |
|
|
97 |
|
|
|
98 |
$FrameSizeDataLength = getid3_lib::BigEndian2Int(fread($this->getid3->fp, 4)); |
|
|
99 |
$FLVheaderFrameLength = 9; |
|
|
100 |
if ($FrameSizeDataLength > $FLVheaderFrameLength) { |
|
|
101 |
fseek($this->getid3->fp, $FrameSizeDataLength - $FLVheaderFrameLength, SEEK_CUR); |
|
|
102 |
} |
|
|
103 |
$Duration = 0; |
|
|
104 |
$found_video = false; |
|
|
105 |
$found_audio = false; |
|
|
106 |
$found_meta = false; |
|
|
107 |
$found_valid_meta_playtime = false; |
|
|
108 |
$tagParseCount = 0; |
|
|
109 |
$info['flv']['framecount'] = array('total'=>0, 'audio'=>0, 'video'=>0); |
|
|
110 |
$flv_framecount = &$info['flv']['framecount']; |
|
|
111 |
while (((ftell($this->getid3->fp) + 16) < $info['avdataend']) && (($tagParseCount++ <= $this->max_frames) || !$found_valid_meta_playtime)) { |
|
|
112 |
$ThisTagHeader = fread($this->getid3->fp, 16); |
|
|
113 |
|
|
|
114 |
$PreviousTagLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 0, 4)); |
|
|
115 |
$TagType = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 4, 1)); |
|
|
116 |
$DataLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 5, 3)); |
|
|
117 |
$Timestamp = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 8, 3)); |
|
|
118 |
$LastHeaderByte = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 15, 1)); |
|
|
119 |
$NextOffset = ftell($this->getid3->fp) - 1 + $DataLength; |
|
|
120 |
if ($Timestamp > $Duration) { |
|
|
121 |
$Duration = $Timestamp; |
|
|
122 |
} |
|
|
123 |
|
|
|
124 |
$flv_framecount['total']++; |
|
|
125 |
switch ($TagType) { |
|
|
126 |
case GETID3_FLV_TAG_AUDIO: |
|
|
127 |
$flv_framecount['audio']++; |
|
|
128 |
if (!$found_audio) { |
|
|
129 |
$found_audio = true; |
|
|
130 |
$info['flv']['audio']['audioFormat'] = ($LastHeaderByte >> 4) & 0x0F; |
|
|
131 |
$info['flv']['audio']['audioRate'] = ($LastHeaderByte >> 2) & 0x03; |
|
|
132 |
$info['flv']['audio']['audioSampleSize'] = ($LastHeaderByte >> 1) & 0x01; |
|
|
133 |
$info['flv']['audio']['audioType'] = $LastHeaderByte & 0x01; |
|
|
134 |
} |
|
|
135 |
break; |
|
|
136 |
|
|
|
137 |
case GETID3_FLV_TAG_VIDEO: |
|
|
138 |
$flv_framecount['video']++; |
|
|
139 |
if (!$found_video) { |
|
|
140 |
$found_video = true; |
|
|
141 |
$info['flv']['video']['videoCodec'] = $LastHeaderByte & 0x07; |
|
|
142 |
|
|
|
143 |
$FLVvideoHeader = fread($this->getid3->fp, 11); |
|
|
144 |
|
|
|
145 |
if ($info['flv']['video']['videoCodec'] == GETID3_FLV_VIDEO_H264) { |
|
|
146 |
// this code block contributed by: moysevichØgmail*com |
|
|
147 |
|
|
|
148 |
$AVCPacketType = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 0, 1)); |
|
|
149 |
if ($AVCPacketType == H264_AVC_SEQUENCE_HEADER) { |
|
|
150 |
// read AVCDecoderConfigurationRecord |
|
|
151 |
$configurationVersion = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 1)); |
|
|
152 |
$AVCProfileIndication = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 1)); |
|
|
153 |
$profile_compatibility = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 1)); |
|
|
154 |
$lengthSizeMinusOne = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 7, 1)); |
|
|
155 |
$numOfSequenceParameterSets = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 8, 1)); |
|
|
156 |
|
|
|
157 |
if (($numOfSequenceParameterSets & 0x1F) != 0) { |
|
|
158 |
// there is at least one SequenceParameterSet |
|
|
159 |
// read size of the first SequenceParameterSet |
|
|
160 |
//$spsSize = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 9, 2)); |
|
|
161 |
$spsSize = getid3_lib::LittleEndian2Int(substr($FLVvideoHeader, 9, 2)); |
|
|
162 |
// read the first SequenceParameterSet |
|
|
163 |
$sps = fread($this->getid3->fp, $spsSize); |
|
|
164 |
if (strlen($sps) == $spsSize) { // make sure that whole SequenceParameterSet was red |
|
|
165 |
$spsReader = new AVCSequenceParameterSetReader($sps); |
|
|
166 |
$spsReader->readData(); |
|
|
167 |
$info['video']['resolution_x'] = $spsReader->getWidth(); |
|
|
168 |
$info['video']['resolution_y'] = $spsReader->getHeight(); |
|
|
169 |
} |
|
|
170 |
} |
|
|
171 |
} |
|
|
172 |
// end: moysevichØgmail*com |
|
|
173 |
|
|
|
174 |
} elseif ($info['flv']['video']['videoCodec'] == GETID3_FLV_VIDEO_H263) { |
|
|
175 |
|
|
|
176 |
$PictureSizeType = (getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 3, 2))) >> 7; |
|
|
177 |
$PictureSizeType = $PictureSizeType & 0x0007; |
|
|
178 |
$info['flv']['header']['videoSizeType'] = $PictureSizeType; |
|
|
179 |
switch ($PictureSizeType) { |
|
|
180 |
case 0: |
|
|
181 |
//$PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2)); |
|
|
182 |
//$PictureSizeEnc <<= 1; |
|
|
183 |
//$info['video']['resolution_x'] = ($PictureSizeEnc & 0xFF00) >> 8; |
|
|
184 |
//$PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 2)); |
|
|
185 |
//$PictureSizeEnc <<= 1; |
|
|
186 |
//$info['video']['resolution_y'] = ($PictureSizeEnc & 0xFF00) >> 8; |
|
|
187 |
|
|
|
188 |
$PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 2)); |
|
|
189 |
$PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2)); |
|
|
190 |
$PictureSizeEnc['x'] >>= 7; |
|
|
191 |
$PictureSizeEnc['y'] >>= 7; |
|
|
192 |
$info['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFF; |
|
|
193 |
$info['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFF; |
|
|
194 |
break; |
|
|
195 |
|
|
|
196 |
case 1: |
|
|
197 |
$PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 3)); |
|
|
198 |
$PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 3)); |
|
|
199 |
$PictureSizeEnc['x'] >>= 7; |
|
|
200 |
$PictureSizeEnc['y'] >>= 7; |
|
|
201 |
$info['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFFFF; |
|
|
202 |
$info['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFFFF; |
|
|
203 |
break; |
|
|
204 |
|
|
|
205 |
case 2: |
|
|
206 |
$info['video']['resolution_x'] = 352; |
|
|
207 |
$info['video']['resolution_y'] = 288; |
|
|
208 |
break; |
|
|
209 |
|
|
|
210 |
case 3: |
|
|
211 |
$info['video']['resolution_x'] = 176; |
|
|
212 |
$info['video']['resolution_y'] = 144; |
|
|
213 |
break; |
|
|
214 |
|
|
|
215 |
case 4: |
|
|
216 |
$info['video']['resolution_x'] = 128; |
|
|
217 |
$info['video']['resolution_y'] = 96; |
|
|
218 |
break; |
|
|
219 |
|
|
|
220 |
case 5: |
|
|
221 |
$info['video']['resolution_x'] = 320; |
|
|
222 |
$info['video']['resolution_y'] = 240; |
|
|
223 |
break; |
|
|
224 |
|
|
|
225 |
case 6: |
|
|
226 |
$info['video']['resolution_x'] = 160; |
|
|
227 |
$info['video']['resolution_y'] = 120; |
|
|
228 |
break; |
|
|
229 |
|
|
|
230 |
default: |
|
|
231 |
$info['video']['resolution_x'] = 0; |
|
|
232 |
$info['video']['resolution_y'] = 0; |
|
|
233 |
break; |
|
|
234 |
|
|
|
235 |
} |
|
|
236 |
} |
|
|
237 |
$info['video']['pixel_aspect_ratio'] = $info['video']['resolution_x'] / $info['video']['resolution_y']; |
|
|
238 |
} |
|
|
239 |
break; |
|
|
240 |
|
|
|
241 |
// Meta tag |
|
|
242 |
case GETID3_FLV_TAG_META: |
|
|
243 |
if (!$found_meta) { |
|
|
244 |
$found_meta = true; |
|
|
245 |
fseek($this->getid3->fp, -1, SEEK_CUR); |
|
|
246 |
$datachunk = fread($this->getid3->fp, $DataLength); |
|
|
247 |
$AMFstream = new AMFStream($datachunk); |
|
|
248 |
$reader = new AMFReader($AMFstream); |
|
|
249 |
$eventName = $reader->readData(); |
|
|
250 |
$info['flv']['meta'][$eventName] = $reader->readData(); |
|
|
251 |
unset($reader); |
|
|
252 |
|
|
|
253 |
$copykeys = array('framerate'=>'frame_rate', 'width'=>'resolution_x', 'height'=>'resolution_y', 'audiodatarate'=>'bitrate', 'videodatarate'=>'bitrate'); |
|
|
254 |
foreach ($copykeys as $sourcekey => $destkey) { |
|
|
255 |
if (isset($info['flv']['meta']['onMetaData'][$sourcekey])) { |
|
|
256 |
switch ($sourcekey) { |
|
|
257 |
case 'width': |
|
|
258 |
case 'height': |
|
|
259 |
$info['video'][$destkey] = intval(round($info['flv']['meta']['onMetaData'][$sourcekey])); |
|
|
260 |
break; |
|
|
261 |
case 'audiodatarate': |
|
|
262 |
$info['audio'][$destkey] = getid3_lib::CastAsInt(round($info['flv']['meta']['onMetaData'][$sourcekey] * 1000)); |
|
|
263 |
break; |
|
|
264 |
case 'videodatarate': |
|
|
265 |
case 'frame_rate': |
|
|
266 |
default: |
|
|
267 |
$info['video'][$destkey] = $info['flv']['meta']['onMetaData'][$sourcekey]; |
|
|
268 |
break; |
|
|
269 |
} |
|
|
270 |
} |
|
|
271 |
} |
|
|
272 |
if (!empty($info['flv']['meta']['onMetaData']['duration'])) { |
|
|
273 |
$found_valid_meta_playtime = true; |
|
|
274 |
} |
|
|
275 |
} |
|
|
276 |
break; |
|
|
277 |
|
|
|
278 |
default: |
|
|
279 |
// noop |
|
|
280 |
break; |
|
|
281 |
} |
|
|
282 |
fseek($this->getid3->fp, $NextOffset, SEEK_SET); |
|
|
283 |
} |
|
|
284 |
|
|
|
285 |
$info['playtime_seconds'] = $Duration / 1000; |
|
|
286 |
if ($info['playtime_seconds'] > 0) { |
|
|
287 |
$info['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds']; |
|
|
288 |
} |
|
|
289 |
|
|
|
290 |
if ($info['flv']['header']['hasAudio']) { |
|
|
291 |
$info['audio']['codec'] = $this->FLVaudioFormat($info['flv']['audio']['audioFormat']); |
|
|
292 |
$info['audio']['sample_rate'] = $this->FLVaudioRate($info['flv']['audio']['audioRate']); |
|
|
293 |
$info['audio']['bits_per_sample'] = $this->FLVaudioBitDepth($info['flv']['audio']['audioSampleSize']); |
|
|
294 |
|
|
|
295 |
$info['audio']['channels'] = $info['flv']['audio']['audioType'] + 1; // 0=mono,1=stereo |
|
|
296 |
$info['audio']['lossless'] = ($info['flv']['audio']['audioFormat'] ? false : true); // 0=uncompressed |
|
|
297 |
$info['audio']['dataformat'] = 'flv'; |
|
|
298 |
} |
|
|
299 |
if (!empty($info['flv']['header']['hasVideo'])) { |
|
|
300 |
$info['video']['codec'] = $this->FLVvideoCodec($info['flv']['video']['videoCodec']); |
|
|
301 |
$info['video']['dataformat'] = 'flv'; |
|
|
302 |
$info['video']['lossless'] = false; |
|
|
303 |
} |
|
|
304 |
|
|
|
305 |
// Set information from meta |
|
|
306 |
if (!empty($info['flv']['meta']['onMetaData']['duration'])) { |
|
|
307 |
$info['playtime_seconds'] = $info['flv']['meta']['onMetaData']['duration']; |
|
|
308 |
$info['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds']; |
|
|
309 |
} |
|
|
310 |
if (isset($info['flv']['meta']['onMetaData']['audiocodecid'])) { |
|
|
311 |
$info['audio']['codec'] = $this->FLVaudioFormat($info['flv']['meta']['onMetaData']['audiocodecid']); |
|
|
312 |
} |
|
|
313 |
if (isset($info['flv']['meta']['onMetaData']['videocodecid'])) { |
|
|
314 |
$info['video']['codec'] = $this->FLVvideoCodec($info['flv']['meta']['onMetaData']['videocodecid']); |
|
|
315 |
} |
|
|
316 |
return true; |
|
|
317 |
} |
|
|
318 |
|
|
|
319 |
|
|
|
320 |
public function FLVaudioFormat($id) { |
|
|
321 |
$FLVaudioFormat = array( |
|
|
322 |
0 => 'Linear PCM, platform endian', |
|
|
323 |
1 => 'ADPCM', |
|
|
324 |
2 => 'mp3', |
|
|
325 |
3 => 'Linear PCM, little endian', |
|
|
326 |
4 => 'Nellymoser 16kHz mono', |
|
|
327 |
5 => 'Nellymoser 8kHz mono', |
|
|
328 |
6 => 'Nellymoser', |
|
|
329 |
7 => 'G.711A-law logarithmic PCM', |
|
|
330 |
8 => 'G.711 mu-law logarithmic PCM', |
|
|
331 |
9 => 'reserved', |
|
|
332 |
10 => 'AAC', |
|
|
333 |
11 => false, // unknown? |
|
|
334 |
12 => false, // unknown? |
|
|
335 |
13 => false, // unknown? |
|
|
336 |
14 => 'mp3 8kHz', |
|
|
337 |
15 => 'Device-specific sound', |
|
|
338 |
); |
|
|
339 |
return (isset($FLVaudioFormat[$id]) ? $FLVaudioFormat[$id] : false); |
|
|
340 |
} |
|
|
341 |
|
|
|
342 |
public function FLVaudioRate($id) { |
|
|
343 |
$FLVaudioRate = array( |
|
|
344 |
0 => 5500, |
|
|
345 |
1 => 11025, |
|
|
346 |
2 => 22050, |
|
|
347 |
3 => 44100, |
|
|
348 |
); |
|
|
349 |
return (isset($FLVaudioRate[$id]) ? $FLVaudioRate[$id] : false); |
|
|
350 |
} |
|
|
351 |
|
|
|
352 |
public function FLVaudioBitDepth($id) { |
|
|
353 |
$FLVaudioBitDepth = array( |
|
|
354 |
0 => 8, |
|
|
355 |
1 => 16, |
|
|
356 |
); |
|
|
357 |
return (isset($FLVaudioBitDepth[$id]) ? $FLVaudioBitDepth[$id] : false); |
|
|
358 |
} |
|
|
359 |
|
|
|
360 |
public function FLVvideoCodec($id) { |
|
|
361 |
$FLVvideoCodec = array( |
|
|
362 |
GETID3_FLV_VIDEO_H263 => 'Sorenson H.263', |
|
|
363 |
GETID3_FLV_VIDEO_SCREEN => 'Screen video', |
|
|
364 |
GETID3_FLV_VIDEO_VP6FLV => 'On2 VP6', |
|
|
365 |
GETID3_FLV_VIDEO_VP6FLV_ALPHA => 'On2 VP6 with alpha channel', |
|
|
366 |
GETID3_FLV_VIDEO_SCREENV2 => 'Screen video v2', |
|
|
367 |
GETID3_FLV_VIDEO_H264 => 'Sorenson H.264', |
|
|
368 |
); |
|
|
369 |
return (isset($FLVvideoCodec[$id]) ? $FLVvideoCodec[$id] : false); |
|
|
370 |
} |
|
|
371 |
} |
|
|
372 |
|
|
|
373 |
class AMFStream { |
|
|
374 |
public $bytes; |
|
|
375 |
public $pos; |
|
|
376 |
|
|
|
377 |
public function AMFStream(&$bytes) { |
|
|
378 |
$this->bytes =& $bytes; |
|
|
379 |
$this->pos = 0; |
|
|
380 |
} |
|
|
381 |
|
|
|
382 |
public function readByte() { |
|
|
383 |
return getid3_lib::BigEndian2Int(substr($this->bytes, $this->pos++, 1)); |
|
|
384 |
} |
|
|
385 |
|
|
|
386 |
public function readInt() { |
|
|
387 |
return ($this->readByte() << 8) + $this->readByte(); |
|
|
388 |
} |
|
|
389 |
|
|
|
390 |
public function readLong() { |
|
|
391 |
return ($this->readByte() << 24) + ($this->readByte() << 16) + ($this->readByte() << 8) + $this->readByte(); |
|
|
392 |
} |
|
|
393 |
|
|
|
394 |
public function readDouble() { |
|
|
395 |
return getid3_lib::BigEndian2Float($this->read(8)); |
|
|
396 |
} |
|
|
397 |
|
|
|
398 |
public function readUTF() { |
|
|
399 |
$length = $this->readInt(); |
|
|
400 |
return $this->read($length); |
|
|
401 |
} |
|
|
402 |
|
|
|
403 |
public function readLongUTF() { |
|
|
404 |
$length = $this->readLong(); |
|
|
405 |
return $this->read($length); |
|
|
406 |
} |
|
|
407 |
|
|
|
408 |
public function read($length) { |
|
|
409 |
$val = substr($this->bytes, $this->pos, $length); |
|
|
410 |
$this->pos += $length; |
|
|
411 |
return $val; |
|
|
412 |
} |
|
|
413 |
|
|
|
414 |
public function peekByte() { |
|
|
415 |
$pos = $this->pos; |
|
|
416 |
$val = $this->readByte(); |
|
|
417 |
$this->pos = $pos; |
|
|
418 |
return $val; |
|
|
419 |
} |
|
|
420 |
|
|
|
421 |
public function peekInt() { |
|
|
422 |
$pos = $this->pos; |
|
|
423 |
$val = $this->readInt(); |
|
|
424 |
$this->pos = $pos; |
|
|
425 |
return $val; |
|
|
426 |
} |
|
|
427 |
|
|
|
428 |
public function peekLong() { |
|
|
429 |
$pos = $this->pos; |
|
|
430 |
$val = $this->readLong(); |
|
|
431 |
$this->pos = $pos; |
|
|
432 |
return $val; |
|
|
433 |
} |
|
|
434 |
|
|
|
435 |
public function peekDouble() { |
|
|
436 |
$pos = $this->pos; |
|
|
437 |
$val = $this->readDouble(); |
|
|
438 |
$this->pos = $pos; |
|
|
439 |
return $val; |
|
|
440 |
} |
|
|
441 |
|
|
|
442 |
public function peekUTF() { |
|
|
443 |
$pos = $this->pos; |
|
|
444 |
$val = $this->readUTF(); |
|
|
445 |
$this->pos = $pos; |
|
|
446 |
return $val; |
|
|
447 |
} |
|
|
448 |
|
|
|
449 |
public function peekLongUTF() { |
|
|
450 |
$pos = $this->pos; |
|
|
451 |
$val = $this->readLongUTF(); |
|
|
452 |
$this->pos = $pos; |
|
|
453 |
return $val; |
|
|
454 |
} |
|
|
455 |
} |
|
|
456 |
|
|
|
457 |
class AMFReader { |
|
|
458 |
public $stream; |
|
|
459 |
|
|
|
460 |
public function AMFReader(&$stream) { |
|
|
461 |
$this->stream =& $stream; |
|
|
462 |
} |
|
|
463 |
|
|
|
464 |
public function readData() { |
|
|
465 |
$value = null; |
|
|
466 |
|
|
|
467 |
$type = $this->stream->readByte(); |
|
|
468 |
switch ($type) { |
|
|
469 |
|
|
|
470 |
// Double |
|
|
471 |
case 0: |
|
|
472 |
$value = $this->readDouble(); |
|
|
473 |
break; |
|
|
474 |
|
|
|
475 |
// Boolean |
|
|
476 |
case 1: |
|
|
477 |
$value = $this->readBoolean(); |
|
|
478 |
break; |
|
|
479 |
|
|
|
480 |
// String |
|
|
481 |
case 2: |
|
|
482 |
$value = $this->readString(); |
|
|
483 |
break; |
|
|
484 |
|
|
|
485 |
// Object |
|
|
486 |
case 3: |
|
|
487 |
$value = $this->readObject(); |
|
|
488 |
break; |
|
|
489 |
|
|
|
490 |
// null |
|
|
491 |
case 6: |
|
|
492 |
return null; |
|
|
493 |
break; |
|
|
494 |
|
|
|
495 |
// Mixed array |
|
|
496 |
case 8: |
|
|
497 |
$value = $this->readMixedArray(); |
|
|
498 |
break; |
|
|
499 |
|
|
|
500 |
// Array |
|
|
501 |
case 10: |
|
|
502 |
$value = $this->readArray(); |
|
|
503 |
break; |
|
|
504 |
|
|
|
505 |
// Date |
|
|
506 |
case 11: |
|
|
507 |
$value = $this->readDate(); |
|
|
508 |
break; |
|
|
509 |
|
|
|
510 |
// Long string |
|
|
511 |
case 13: |
|
|
512 |
$value = $this->readLongString(); |
|
|
513 |
break; |
|
|
514 |
|
|
|
515 |
// XML (handled as string) |
|
|
516 |
case 15: |
|
|
517 |
$value = $this->readXML(); |
|
|
518 |
break; |
|
|
519 |
|
|
|
520 |
// Typed object (handled as object) |
|
|
521 |
case 16: |
|
|
522 |
$value = $this->readTypedObject(); |
|
|
523 |
break; |
|
|
524 |
|
|
|
525 |
// Long string |
|
|
526 |
default: |
|
|
527 |
$value = '(unknown or unsupported data type)'; |
|
|
528 |
break; |
|
|
529 |
} |
|
|
530 |
|
|
|
531 |
return $value; |
|
|
532 |
} |
|
|
533 |
|
|
|
534 |
public function readDouble() { |
|
|
535 |
return $this->stream->readDouble(); |
|
|
536 |
} |
|
|
537 |
|
|
|
538 |
public function readBoolean() { |
|
|
539 |
return $this->stream->readByte() == 1; |
|
|
540 |
} |
|
|
541 |
|
|
|
542 |
public function readString() { |
|
|
543 |
return $this->stream->readUTF(); |
|
|
544 |
} |
|
|
545 |
|
|
|
546 |
public function readObject() { |
|
|
547 |
// Get highest numerical index - ignored |
|
|
548 |
// $highestIndex = $this->stream->readLong(); |
|
|
549 |
|
|
|
550 |
$data = array(); |
|
|
551 |
|
|
|
552 |
while ($key = $this->stream->readUTF()) { |
|
|
553 |
$data[$key] = $this->readData(); |
|
|
554 |
} |
|
|
555 |
// Mixed array record ends with empty string (0x00 0x00) and 0x09 |
|
|
556 |
if (($key == '') && ($this->stream->peekByte() == 0x09)) { |
|
|
557 |
// Consume byte |
|
|
558 |
$this->stream->readByte(); |
|
|
559 |
} |
|
|
560 |
return $data; |
|
|
561 |
} |
|
|
562 |
|
|
|
563 |
public function readMixedArray() { |
|
|
564 |
// Get highest numerical index - ignored |
|
|
565 |
$highestIndex = $this->stream->readLong(); |
|
|
566 |
|
|
|
567 |
$data = array(); |
|
|
568 |
|
|
|
569 |
while ($key = $this->stream->readUTF()) { |
|
|
570 |
if (is_numeric($key)) { |
|
|
571 |
$key = (float) $key; |
|
|
572 |
} |
|
|
573 |
$data[$key] = $this->readData(); |
|
|
574 |
} |
|
|
575 |
// Mixed array record ends with empty string (0x00 0x00) and 0x09 |
|
|
576 |
if (($key == '') && ($this->stream->peekByte() == 0x09)) { |
|
|
577 |
// Consume byte |
|
|
578 |
$this->stream->readByte(); |
|
|
579 |
} |
|
|
580 |
|
|
|
581 |
return $data; |
|
|
582 |
} |
|
|
583 |
|
|
|
584 |
public function readArray() { |
|
|
585 |
$length = $this->stream->readLong(); |
|
|
586 |
$data = array(); |
|
|
587 |
|
|
|
588 |
for ($i = 0; $i < $length; $i++) { |
|
|
589 |
$data[] = $this->readData(); |
|
|
590 |
} |
|
|
591 |
return $data; |
|
|
592 |
} |
|
|
593 |
|
|
|
594 |
public function readDate() { |
|
|
595 |
$timestamp = $this->stream->readDouble(); |
|
|
596 |
$timezone = $this->stream->readInt(); |
|
|
597 |
return $timestamp; |
|
|
598 |
} |
|
|
599 |
|
|
|
600 |
public function readLongString() { |
|
|
601 |
return $this->stream->readLongUTF(); |
|
|
602 |
} |
|
|
603 |
|
|
|
604 |
public function readXML() { |
|
|
605 |
return $this->stream->readLongUTF(); |
|
|
606 |
} |
|
|
607 |
|
|
|
608 |
public function readTypedObject() { |
|
|
609 |
$className = $this->stream->readUTF(); |
|
|
610 |
return $this->readObject(); |
|
|
611 |
} |
|
|
612 |
} |
|
|
613 |
|
|
|
614 |
class AVCSequenceParameterSetReader { |
|
|
615 |
public $sps; |
|
|
616 |
public $start = 0; |
|
|
617 |
public $currentBytes = 0; |
|
|
618 |
public $currentBits = 0; |
|
|
619 |
public $width; |
|
|
620 |
public $height; |
|
|
621 |
|
|
|
622 |
public function AVCSequenceParameterSetReader($sps) { |
|
|
623 |
$this->sps = $sps; |
|
|
624 |
} |
|
|
625 |
|
|
|
626 |
public function readData() { |
|
|
627 |
$this->skipBits(8); |
|
|
628 |
$this->skipBits(8); |
|
|
629 |
$profile = $this->getBits(8); // read profile |
|
|
630 |
$this->skipBits(16); |
|
|
631 |
$this->expGolombUe(); // read sps id |
|
|
632 |
if (in_array($profile, array(H264_PROFILE_HIGH, H264_PROFILE_HIGH10, H264_PROFILE_HIGH422, H264_PROFILE_HIGH444, H264_PROFILE_HIGH444_PREDICTIVE))) { |
|
|
633 |
if ($this->expGolombUe() == 3) { |
|
|
634 |
$this->skipBits(1); |
|
|
635 |
} |
|
|
636 |
$this->expGolombUe(); |
|
|
637 |
$this->expGolombUe(); |
|
|
638 |
$this->skipBits(1); |
|
|
639 |
if ($this->getBit()) { |
|
|
640 |
for ($i = 0; $i < 8; $i++) { |
|
|
641 |
if ($this->getBit()) { |
|
|
642 |
$size = $i < 6 ? 16 : 64; |
|
|
643 |
$lastScale = 8; |
|
|
644 |
$nextScale = 8; |
|
|
645 |
for ($j = 0; $j < $size; $j++) { |
|
|
646 |
if ($nextScale != 0) { |
|
|
647 |
$deltaScale = $this->expGolombUe(); |
|
|
648 |
$nextScale = ($lastScale + $deltaScale + 256) % 256; |
|
|
649 |
} |
|
|
650 |
if ($nextScale != 0) { |
|
|
651 |
$lastScale = $nextScale; |
|
|
652 |
} |
|
|
653 |
} |
|
|
654 |
} |
|
|
655 |
} |
|
|
656 |
} |
|
|
657 |
} |
|
|
658 |
$this->expGolombUe(); |
|
|
659 |
$pocType = $this->expGolombUe(); |
|
|
660 |
if ($pocType == 0) { |
|
|
661 |
$this->expGolombUe(); |
|
|
662 |
} elseif ($pocType == 1) { |
|
|
663 |
$this->skipBits(1); |
|
|
664 |
$this->expGolombSe(); |
|
|
665 |
$this->expGolombSe(); |
|
|
666 |
$pocCycleLength = $this->expGolombUe(); |
|
|
667 |
for ($i = 0; $i < $pocCycleLength; $i++) { |
|
|
668 |
$this->expGolombSe(); |
|
|
669 |
} |
|
|
670 |
} |
|
|
671 |
$this->expGolombUe(); |
|
|
672 |
$this->skipBits(1); |
|
|
673 |
$this->width = ($this->expGolombUe() + 1) * 16; |
|
|
674 |
$heightMap = $this->expGolombUe() + 1; |
|
|
675 |
$this->height = (2 - $this->getBit()) * $heightMap * 16; |
|
|
676 |
} |
|
|
677 |
|
|
|
678 |
public function skipBits($bits) { |
|
|
679 |
$newBits = $this->currentBits + $bits; |
|
|
680 |
$this->currentBytes += (int)floor($newBits / 8); |
|
|
681 |
$this->currentBits = $newBits % 8; |
|
|
682 |
} |
|
|
683 |
|
|
|
684 |
public function getBit() { |
|
|
685 |
$result = (getid3_lib::BigEndian2Int(substr($this->sps, $this->currentBytes, 1)) >> (7 - $this->currentBits)) & 0x01; |
|
|
686 |
$this->skipBits(1); |
|
|
687 |
return $result; |
|
|
688 |
} |
|
|
689 |
|
|
|
690 |
public function getBits($bits) { |
|
|
691 |
$result = 0; |
|
|
692 |
for ($i = 0; $i < $bits; $i++) { |
|
|
693 |
$result = ($result << 1) + $this->getBit(); |
|
|
694 |
} |
|
|
695 |
return $result; |
|
|
696 |
} |
|
|
697 |
|
|
|
698 |
public function expGolombUe() { |
|
|
699 |
$significantBits = 0; |
|
|
700 |
$bit = $this->getBit(); |
|
|
701 |
while ($bit == 0) { |
|
|
702 |
$significantBits++; |
|
|
703 |
$bit = $this->getBit(); |
|
|
704 |
|
|
|
705 |
if ($significantBits > 31) { |
|
|
706 |
// something is broken, this is an emergency escape to prevent infinite loops |
|
|
707 |
return 0; |
|
|
708 |
} |
|
|
709 |
} |
|
|
710 |
return (1 << $significantBits) + $this->getBits($significantBits) - 1; |
|
|
711 |
} |
|
|
712 |
|
|
|
713 |
public function expGolombSe() { |
|
|
714 |
$result = $this->expGolombUe(); |
|
|
715 |
if (($result & 0x01) == 0) { |
|
|
716 |
return -($result >> 1); |
|
|
717 |
} else { |
|
|
718 |
return ($result + 1) >> 1; |
|
|
719 |
} |
|
|
720 |
} |
|
|
721 |
|
|
|
722 |
public function getWidth() { |
|
|
723 |
return $this->width; |
|
|
724 |
} |
|
|
725 |
|
|
|
726 |
public function getHeight() { |
|
|
727 |
return $this->height; |
|
|
728 |
} |
|
|
729 |
} |