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2ba45a60 DM |
1 | /* |
2 | * FLV demuxer | |
3 | * Copyright (c) 2003 The FFmpeg Project | |
4 | * | |
5 | * This demuxer will generate a 1 byte extradata for VP6F content. | |
6 | * It is composed of: | |
7 | * - upper 4bits: difference between encoded width and visible width | |
8 | * - lower 4bits: difference between encoded height and visible height | |
9 | * | |
10 | * This file is part of FFmpeg. | |
11 | * | |
12 | * FFmpeg is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU Lesser General Public | |
14 | * License as published by the Free Software Foundation; either | |
15 | * version 2.1 of the License, or (at your option) any later version. | |
16 | * | |
17 | * FFmpeg is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * Lesser General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU Lesser General Public | |
23 | * License along with FFmpeg; if not, write to the Free Software | |
24 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
25 | */ | |
26 | ||
27 | #include "libavutil/avstring.h" | |
28 | #include "libavutil/channel_layout.h" | |
29 | #include "libavutil/dict.h" | |
30 | #include "libavutil/opt.h" | |
31 | #include "libavutil/intfloat.h" | |
32 | #include "libavutil/mathematics.h" | |
33 | #include "libavcodec/bytestream.h" | |
34 | #include "libavcodec/mpeg4audio.h" | |
35 | #include "avformat.h" | |
36 | #include "internal.h" | |
37 | #include "avio_internal.h" | |
38 | #include "flv.h" | |
39 | ||
40 | #define VALIDATE_INDEX_TS_THRESH 2500 | |
41 | ||
42 | typedef struct { | |
43 | const AVClass *class; ///< Class for private options. | |
44 | int trust_metadata; ///< configure streams according onMetaData | |
45 | int wrong_dts; ///< wrong dts due to negative cts | |
46 | uint8_t *new_extradata[FLV_STREAM_TYPE_NB]; | |
47 | int new_extradata_size[FLV_STREAM_TYPE_NB]; | |
48 | int last_sample_rate; | |
49 | int last_channels; | |
50 | struct { | |
51 | int64_t dts; | |
52 | int64_t pos; | |
53 | } validate_index[2]; | |
54 | int validate_next; | |
55 | int validate_count; | |
56 | int searched_for_end; | |
57 | } FLVContext; | |
58 | ||
59 | static int probe(AVProbeData *p, int live) | |
60 | { | |
61 | const uint8_t *d = p->buf; | |
62 | unsigned offset = AV_RB32(d + 5); | |
63 | ||
64 | if (d[0] == 'F' && | |
65 | d[1] == 'L' && | |
66 | d[2] == 'V' && | |
67 | d[3] < 5 && d[5] == 0 && | |
68 | offset + 100 < p->buf_size && | |
69 | offset > 8) { | |
70 | int is_live = !memcmp(d + offset + 40, "NGINX RTMP", 10); | |
71 | ||
72 | if (live == is_live) | |
73 | return AVPROBE_SCORE_MAX; | |
74 | } | |
75 | return 0; | |
76 | } | |
77 | ||
78 | static int flv_probe(AVProbeData *p) | |
79 | { | |
80 | return probe(p, 0); | |
81 | } | |
82 | ||
83 | static int live_flv_probe(AVProbeData *p) | |
84 | { | |
85 | return probe(p, 1); | |
86 | } | |
87 | ||
88 | static AVStream *create_stream(AVFormatContext *s, int codec_type) | |
89 | { | |
90 | AVStream *st = avformat_new_stream(s, NULL); | |
91 | if (!st) | |
92 | return NULL; | |
93 | st->codec->codec_type = codec_type; | |
94 | if (s->nb_streams>=3 ||( s->nb_streams==2 | |
95 | && s->streams[0]->codec->codec_type != AVMEDIA_TYPE_DATA | |
96 | && s->streams[1]->codec->codec_type != AVMEDIA_TYPE_DATA)) | |
97 | s->ctx_flags &= ~AVFMTCTX_NOHEADER; | |
98 | ||
99 | avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */ | |
100 | return st; | |
101 | } | |
102 | ||
103 | static int flv_same_audio_codec(AVCodecContext *acodec, int flags) | |
104 | { | |
105 | int bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8; | |
106 | int flv_codecid = flags & FLV_AUDIO_CODECID_MASK; | |
107 | int codec_id; | |
108 | ||
109 | if (!acodec->codec_id && !acodec->codec_tag) | |
110 | return 1; | |
111 | ||
112 | if (acodec->bits_per_coded_sample != bits_per_coded_sample) | |
113 | return 0; | |
114 | ||
115 | switch (flv_codecid) { | |
116 | // no distinction between S16 and S8 PCM codec flags | |
117 | case FLV_CODECID_PCM: | |
118 | codec_id = bits_per_coded_sample == 8 | |
119 | ? AV_CODEC_ID_PCM_U8 | |
120 | #if HAVE_BIGENDIAN | |
121 | : AV_CODEC_ID_PCM_S16BE; | |
122 | #else | |
123 | : AV_CODEC_ID_PCM_S16LE; | |
124 | #endif | |
125 | return codec_id == acodec->codec_id; | |
126 | case FLV_CODECID_PCM_LE: | |
127 | codec_id = bits_per_coded_sample == 8 | |
128 | ? AV_CODEC_ID_PCM_U8 | |
129 | : AV_CODEC_ID_PCM_S16LE; | |
130 | return codec_id == acodec->codec_id; | |
131 | case FLV_CODECID_AAC: | |
132 | return acodec->codec_id == AV_CODEC_ID_AAC; | |
133 | case FLV_CODECID_ADPCM: | |
134 | return acodec->codec_id == AV_CODEC_ID_ADPCM_SWF; | |
135 | case FLV_CODECID_SPEEX: | |
136 | return acodec->codec_id == AV_CODEC_ID_SPEEX; | |
137 | case FLV_CODECID_MP3: | |
138 | return acodec->codec_id == AV_CODEC_ID_MP3; | |
139 | case FLV_CODECID_NELLYMOSER_8KHZ_MONO: | |
140 | case FLV_CODECID_NELLYMOSER_16KHZ_MONO: | |
141 | case FLV_CODECID_NELLYMOSER: | |
142 | return acodec->codec_id == AV_CODEC_ID_NELLYMOSER; | |
143 | case FLV_CODECID_PCM_MULAW: | |
144 | return acodec->sample_rate == 8000 && | |
145 | acodec->codec_id == AV_CODEC_ID_PCM_MULAW; | |
146 | case FLV_CODECID_PCM_ALAW: | |
147 | return acodec->sample_rate == 8000 && | |
148 | acodec->codec_id == AV_CODEC_ID_PCM_ALAW; | |
149 | default: | |
150 | return acodec->codec_tag == (flv_codecid >> FLV_AUDIO_CODECID_OFFSET); | |
151 | } | |
152 | } | |
153 | ||
154 | static void flv_set_audio_codec(AVFormatContext *s, AVStream *astream, | |
155 | AVCodecContext *acodec, int flv_codecid) | |
156 | { | |
157 | switch (flv_codecid) { | |
158 | // no distinction between S16 and S8 PCM codec flags | |
159 | case FLV_CODECID_PCM: | |
160 | acodec->codec_id = acodec->bits_per_coded_sample == 8 | |
161 | ? AV_CODEC_ID_PCM_U8 | |
162 | #if HAVE_BIGENDIAN | |
163 | : AV_CODEC_ID_PCM_S16BE; | |
164 | #else | |
165 | : AV_CODEC_ID_PCM_S16LE; | |
166 | #endif | |
167 | break; | |
168 | case FLV_CODECID_PCM_LE: | |
169 | acodec->codec_id = acodec->bits_per_coded_sample == 8 | |
170 | ? AV_CODEC_ID_PCM_U8 | |
171 | : AV_CODEC_ID_PCM_S16LE; | |
172 | break; | |
173 | case FLV_CODECID_AAC: | |
174 | acodec->codec_id = AV_CODEC_ID_AAC; | |
175 | break; | |
176 | case FLV_CODECID_ADPCM: | |
177 | acodec->codec_id = AV_CODEC_ID_ADPCM_SWF; | |
178 | break; | |
179 | case FLV_CODECID_SPEEX: | |
180 | acodec->codec_id = AV_CODEC_ID_SPEEX; | |
181 | acodec->sample_rate = 16000; | |
182 | break; | |
183 | case FLV_CODECID_MP3: | |
184 | acodec->codec_id = AV_CODEC_ID_MP3; | |
185 | astream->need_parsing = AVSTREAM_PARSE_FULL; | |
186 | break; | |
187 | case FLV_CODECID_NELLYMOSER_8KHZ_MONO: | |
188 | // in case metadata does not otherwise declare samplerate | |
189 | acodec->sample_rate = 8000; | |
190 | acodec->codec_id = AV_CODEC_ID_NELLYMOSER; | |
191 | break; | |
192 | case FLV_CODECID_NELLYMOSER_16KHZ_MONO: | |
193 | acodec->sample_rate = 16000; | |
194 | acodec->codec_id = AV_CODEC_ID_NELLYMOSER; | |
195 | break; | |
196 | case FLV_CODECID_NELLYMOSER: | |
197 | acodec->codec_id = AV_CODEC_ID_NELLYMOSER; | |
198 | break; | |
199 | case FLV_CODECID_PCM_MULAW: | |
200 | acodec->sample_rate = 8000; | |
201 | acodec->codec_id = AV_CODEC_ID_PCM_MULAW; | |
202 | break; | |
203 | case FLV_CODECID_PCM_ALAW: | |
204 | acodec->sample_rate = 8000; | |
205 | acodec->codec_id = AV_CODEC_ID_PCM_ALAW; | |
206 | break; | |
207 | default: | |
208 | avpriv_request_sample(s, "Audio codec (%x)", | |
209 | flv_codecid >> FLV_AUDIO_CODECID_OFFSET); | |
210 | acodec->codec_tag = flv_codecid >> FLV_AUDIO_CODECID_OFFSET; | |
211 | } | |
212 | } | |
213 | ||
214 | static int flv_same_video_codec(AVCodecContext *vcodec, int flags) | |
215 | { | |
216 | int flv_codecid = flags & FLV_VIDEO_CODECID_MASK; | |
217 | ||
218 | if (!vcodec->codec_id && !vcodec->codec_tag) | |
219 | return 1; | |
220 | ||
221 | switch (flv_codecid) { | |
222 | case FLV_CODECID_H263: | |
223 | return vcodec->codec_id == AV_CODEC_ID_FLV1; | |
224 | case FLV_CODECID_SCREEN: | |
225 | return vcodec->codec_id == AV_CODEC_ID_FLASHSV; | |
226 | case FLV_CODECID_SCREEN2: | |
227 | return vcodec->codec_id == AV_CODEC_ID_FLASHSV2; | |
228 | case FLV_CODECID_VP6: | |
229 | return vcodec->codec_id == AV_CODEC_ID_VP6F; | |
230 | case FLV_CODECID_VP6A: | |
231 | return vcodec->codec_id == AV_CODEC_ID_VP6A; | |
232 | case FLV_CODECID_H264: | |
233 | return vcodec->codec_id == AV_CODEC_ID_H264; | |
234 | default: | |
235 | return vcodec->codec_tag == flv_codecid; | |
236 | } | |
237 | } | |
238 | ||
239 | static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream, | |
240 | int flv_codecid, int read) | |
241 | { | |
242 | AVCodecContext *vcodec = vstream->codec; | |
243 | switch (flv_codecid) { | |
244 | case FLV_CODECID_H263: | |
245 | vcodec->codec_id = AV_CODEC_ID_FLV1; | |
246 | break; | |
247 | case FLV_CODECID_REALH263: | |
248 | vcodec->codec_id = AV_CODEC_ID_H263; | |
249 | break; // Really mean it this time | |
250 | case FLV_CODECID_SCREEN: | |
251 | vcodec->codec_id = AV_CODEC_ID_FLASHSV; | |
252 | break; | |
253 | case FLV_CODECID_SCREEN2: | |
254 | vcodec->codec_id = AV_CODEC_ID_FLASHSV2; | |
255 | break; | |
256 | case FLV_CODECID_VP6: | |
257 | vcodec->codec_id = AV_CODEC_ID_VP6F; | |
258 | case FLV_CODECID_VP6A: | |
259 | if (flv_codecid == FLV_CODECID_VP6A) | |
260 | vcodec->codec_id = AV_CODEC_ID_VP6A; | |
261 | if (read) { | |
262 | if (vcodec->extradata_size != 1) { | |
263 | ff_alloc_extradata(vcodec, 1); | |
264 | } | |
265 | if (vcodec->extradata) | |
266 | vcodec->extradata[0] = avio_r8(s->pb); | |
267 | else | |
268 | avio_skip(s->pb, 1); | |
269 | } | |
270 | return 1; // 1 byte body size adjustment for flv_read_packet() | |
271 | case FLV_CODECID_H264: | |
272 | vcodec->codec_id = AV_CODEC_ID_H264; | |
273 | vstream->need_parsing = AVSTREAM_PARSE_HEADERS; | |
274 | return 3; // not 4, reading packet type will consume one byte | |
275 | case FLV_CODECID_MPEG4: | |
276 | vcodec->codec_id = AV_CODEC_ID_MPEG4; | |
277 | return 3; | |
278 | default: | |
279 | avpriv_request_sample(s, "Video codec (%x)", flv_codecid); | |
280 | vcodec->codec_tag = flv_codecid; | |
281 | } | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | static int amf_get_string(AVIOContext *ioc, char *buffer, int buffsize) | |
287 | { | |
288 | int length = avio_rb16(ioc); | |
289 | if (length >= buffsize) { | |
290 | avio_skip(ioc, length); | |
291 | return -1; | |
292 | } | |
293 | ||
294 | avio_read(ioc, buffer, length); | |
295 | ||
296 | buffer[length] = '\0'; | |
297 | ||
298 | return length; | |
299 | } | |
300 | ||
301 | static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc, | |
302 | AVStream *vstream, int64_t max_pos) | |
303 | { | |
304 | FLVContext *flv = s->priv_data; | |
305 | unsigned int timeslen = 0, fileposlen = 0, i; | |
306 | char str_val[256]; | |
307 | int64_t *times = NULL; | |
308 | int64_t *filepositions = NULL; | |
309 | int ret = AVERROR(ENOSYS); | |
310 | int64_t initial_pos = avio_tell(ioc); | |
311 | ||
312 | if (vstream->nb_index_entries>0) { | |
313 | av_log(s, AV_LOG_WARNING, "Skipping duplicate index\n"); | |
314 | return 0; | |
315 | } | |
316 | ||
317 | if (s->flags & AVFMT_FLAG_IGNIDX) | |
318 | return 0; | |
319 | ||
320 | while (avio_tell(ioc) < max_pos - 2 && | |
321 | amf_get_string(ioc, str_val, sizeof(str_val)) > 0) { | |
322 | int64_t **current_array; | |
323 | unsigned int arraylen; | |
324 | ||
325 | // Expect array object in context | |
326 | if (avio_r8(ioc) != AMF_DATA_TYPE_ARRAY) | |
327 | break; | |
328 | ||
329 | arraylen = avio_rb32(ioc); | |
330 | if (arraylen>>28) | |
331 | break; | |
332 | ||
333 | if (!strcmp(KEYFRAMES_TIMESTAMP_TAG , str_val) && !times) { | |
334 | current_array = × | |
335 | timeslen = arraylen; | |
336 | } else if (!strcmp(KEYFRAMES_BYTEOFFSET_TAG, str_val) && | |
337 | !filepositions) { | |
338 | current_array = &filepositions; | |
339 | fileposlen = arraylen; | |
340 | } else | |
341 | // unexpected metatag inside keyframes, will not use such | |
342 | // metadata for indexing | |
343 | break; | |
344 | ||
345 | if (!(*current_array = av_mallocz(sizeof(**current_array) * arraylen))) { | |
346 | ret = AVERROR(ENOMEM); | |
347 | goto finish; | |
348 | } | |
349 | ||
350 | for (i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++) { | |
351 | if (avio_r8(ioc) != AMF_DATA_TYPE_NUMBER) | |
352 | goto invalid; | |
353 | current_array[0][i] = av_int2double(avio_rb64(ioc)); | |
354 | } | |
355 | if (times && filepositions) { | |
356 | // All done, exiting at a position allowing amf_parse_object | |
357 | // to finish parsing the object | |
358 | ret = 0; | |
359 | break; | |
360 | } | |
361 | } | |
362 | ||
363 | if (timeslen == fileposlen && fileposlen>1 && max_pos <= filepositions[0]) { | |
364 | for (i = 0; i < fileposlen; i++) { | |
365 | av_add_index_entry(vstream, filepositions[i], times[i] * 1000, | |
366 | 0, 0, AVINDEX_KEYFRAME); | |
367 | if (i < 2) { | |
368 | flv->validate_index[i].pos = filepositions[i]; | |
369 | flv->validate_index[i].dts = times[i] * 1000; | |
370 | flv->validate_count = i + 1; | |
371 | } | |
372 | } | |
373 | } else { | |
374 | invalid: | |
375 | av_log(s, AV_LOG_WARNING, "Invalid keyframes object, skipping.\n"); | |
376 | } | |
377 | ||
378 | finish: | |
379 | av_freep(×); | |
380 | av_freep(&filepositions); | |
381 | avio_seek(ioc, initial_pos, SEEK_SET); | |
382 | return ret; | |
383 | } | |
384 | ||
385 | static int amf_parse_object(AVFormatContext *s, AVStream *astream, | |
386 | AVStream *vstream, const char *key, | |
387 | int64_t max_pos, int depth) | |
388 | { | |
389 | AVCodecContext *acodec, *vcodec; | |
390 | FLVContext *flv = s->priv_data; | |
391 | AVIOContext *ioc; | |
392 | AMFDataType amf_type; | |
393 | char str_val[256]; | |
394 | double num_val; | |
395 | ||
396 | num_val = 0; | |
397 | ioc = s->pb; | |
398 | amf_type = avio_r8(ioc); | |
399 | ||
400 | switch (amf_type) { | |
401 | case AMF_DATA_TYPE_NUMBER: | |
402 | num_val = av_int2double(avio_rb64(ioc)); | |
403 | break; | |
404 | case AMF_DATA_TYPE_BOOL: | |
405 | num_val = avio_r8(ioc); | |
406 | break; | |
407 | case AMF_DATA_TYPE_STRING: | |
408 | if (amf_get_string(ioc, str_val, sizeof(str_val)) < 0) | |
409 | return -1; | |
410 | break; | |
411 | case AMF_DATA_TYPE_OBJECT: | |
412 | if ((vstream || astream) && key && | |
413 | ioc->seekable && | |
414 | !strcmp(KEYFRAMES_TAG, key) && depth == 1) | |
415 | if (parse_keyframes_index(s, ioc, vstream ? vstream : astream, | |
416 | max_pos) < 0) | |
417 | av_log(s, AV_LOG_ERROR, "Keyframe index parsing failed\n"); | |
418 | ||
419 | while (avio_tell(ioc) < max_pos - 2 && | |
420 | amf_get_string(ioc, str_val, sizeof(str_val)) > 0) | |
421 | if (amf_parse_object(s, astream, vstream, str_val, max_pos, | |
422 | depth + 1) < 0) | |
423 | return -1; // if we couldn't skip, bomb out. | |
424 | if (avio_r8(ioc) != AMF_END_OF_OBJECT) | |
425 | return -1; | |
426 | break; | |
427 | case AMF_DATA_TYPE_NULL: | |
428 | case AMF_DATA_TYPE_UNDEFINED: | |
429 | case AMF_DATA_TYPE_UNSUPPORTED: | |
430 | break; // these take up no additional space | |
431 | case AMF_DATA_TYPE_MIXEDARRAY: | |
432 | avio_skip(ioc, 4); // skip 32-bit max array index | |
433 | while (avio_tell(ioc) < max_pos - 2 && | |
434 | amf_get_string(ioc, str_val, sizeof(str_val)) > 0) | |
435 | // this is the only case in which we would want a nested | |
436 | // parse to not skip over the object | |
437 | if (amf_parse_object(s, astream, vstream, str_val, max_pos, | |
438 | depth + 1) < 0) | |
439 | return -1; | |
440 | if (avio_r8(ioc) != AMF_END_OF_OBJECT) | |
441 | return -1; | |
442 | break; | |
443 | case AMF_DATA_TYPE_ARRAY: | |
444 | { | |
445 | unsigned int arraylen, i; | |
446 | ||
447 | arraylen = avio_rb32(ioc); | |
448 | for (i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++) | |
449 | if (amf_parse_object(s, NULL, NULL, NULL, max_pos, | |
450 | depth + 1) < 0) | |
451 | return -1; // if we couldn't skip, bomb out. | |
452 | } | |
453 | break; | |
454 | case AMF_DATA_TYPE_DATE: | |
455 | avio_skip(ioc, 8 + 2); // timestamp (double) and UTC offset (int16) | |
456 | break; | |
457 | default: // unsupported type, we couldn't skip | |
458 | return -1; | |
459 | } | |
460 | ||
461 | if (key) { | |
dcebb6f3 DM |
462 | acodec = astream ? astream->codec : NULL; |
463 | vcodec = vstream ? vstream->codec : NULL; | |
464 | ||
2ba45a60 DM |
465 | // stream info doesn't live any deeper than the first object |
466 | if (depth == 1) { | |
2ba45a60 DM |
467 | if (amf_type == AMF_DATA_TYPE_NUMBER || |
468 | amf_type == AMF_DATA_TYPE_BOOL) { | |
469 | if (!strcmp(key, "duration")) | |
470 | s->duration = num_val * AV_TIME_BASE; | |
471 | else if (!strcmp(key, "videodatarate") && vcodec && | |
472 | 0 <= (int)(num_val * 1024.0)) | |
473 | vcodec->bit_rate = num_val * 1024.0; | |
474 | else if (!strcmp(key, "audiodatarate") && acodec && | |
475 | 0 <= (int)(num_val * 1024.0)) | |
476 | acodec->bit_rate = num_val * 1024.0; | |
477 | else if (!strcmp(key, "datastream")) { | |
478 | AVStream *st = create_stream(s, AVMEDIA_TYPE_DATA); | |
479 | if (!st) | |
480 | return AVERROR(ENOMEM); | |
481 | st->codec->codec_id = AV_CODEC_ID_TEXT; | |
482 | } else if (flv->trust_metadata) { | |
483 | if (!strcmp(key, "videocodecid") && vcodec) { | |
484 | flv_set_video_codec(s, vstream, num_val, 0); | |
485 | } else if (!strcmp(key, "audiocodecid") && acodec) { | |
486 | int id = ((int)num_val) << FLV_AUDIO_CODECID_OFFSET; | |
487 | flv_set_audio_codec(s, astream, acodec, id); | |
488 | } else if (!strcmp(key, "audiosamplerate") && acodec) { | |
489 | acodec->sample_rate = num_val; | |
490 | } else if (!strcmp(key, "audiosamplesize") && acodec) { | |
491 | acodec->bits_per_coded_sample = num_val; | |
492 | } else if (!strcmp(key, "stereo") && acodec) { | |
493 | acodec->channels = num_val + 1; | |
494 | acodec->channel_layout = acodec->channels == 2 ? | |
495 | AV_CH_LAYOUT_STEREO : | |
496 | AV_CH_LAYOUT_MONO; | |
497 | } else if (!strcmp(key, "width") && vcodec) { | |
498 | vcodec->width = num_val; | |
499 | } else if (!strcmp(key, "height") && vcodec) { | |
500 | vcodec->height = num_val; | |
501 | } | |
502 | } | |
503 | } | |
504 | } | |
505 | ||
506 | if (amf_type == AMF_DATA_TYPE_OBJECT && s->nb_streams == 1 && | |
507 | ((!acodec && !strcmp(key, "audiocodecid")) || | |
508 | (!vcodec && !strcmp(key, "videocodecid")))) | |
509 | s->ctx_flags &= ~AVFMTCTX_NOHEADER; //If there is either audio/video missing, codecid will be an empty object | |
510 | ||
511 | if (!strcmp(key, "duration") || | |
512 | !strcmp(key, "filesize") || | |
513 | !strcmp(key, "width") || | |
514 | !strcmp(key, "height") || | |
515 | !strcmp(key, "videodatarate") || | |
516 | !strcmp(key, "framerate") || | |
517 | !strcmp(key, "videocodecid") || | |
518 | !strcmp(key, "audiodatarate") || | |
519 | !strcmp(key, "audiosamplerate") || | |
520 | !strcmp(key, "audiosamplesize") || | |
521 | !strcmp(key, "stereo") || | |
522 | !strcmp(key, "audiocodecid") || | |
523 | !strcmp(key, "datastream")) | |
524 | return 0; | |
525 | ||
526 | s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; | |
527 | if (amf_type == AMF_DATA_TYPE_BOOL) { | |
528 | av_strlcpy(str_val, num_val > 0 ? "true" : "false", | |
529 | sizeof(str_val)); | |
530 | av_dict_set(&s->metadata, key, str_val, 0); | |
531 | } else if (amf_type == AMF_DATA_TYPE_NUMBER) { | |
532 | snprintf(str_val, sizeof(str_val), "%.f", num_val); | |
533 | av_dict_set(&s->metadata, key, str_val, 0); | |
534 | } else if (amf_type == AMF_DATA_TYPE_STRING) | |
535 | av_dict_set(&s->metadata, key, str_val, 0); | |
536 | } | |
537 | ||
538 | return 0; | |
539 | } | |
540 | ||
541 | static int flv_read_metabody(AVFormatContext *s, int64_t next_pos) | |
542 | { | |
543 | AMFDataType type; | |
544 | AVStream *stream, *astream, *vstream; | |
545 | AVStream av_unused *dstream; | |
546 | AVIOContext *ioc; | |
547 | int i; | |
548 | // only needs to hold the string "onMetaData". | |
549 | // Anything longer is something we don't want. | |
550 | char buffer[11]; | |
551 | ||
552 | astream = NULL; | |
553 | vstream = NULL; | |
554 | dstream = NULL; | |
555 | ioc = s->pb; | |
556 | ||
557 | // first object needs to be "onMetaData" string | |
558 | type = avio_r8(ioc); | |
559 | if (type != AMF_DATA_TYPE_STRING || | |
560 | amf_get_string(ioc, buffer, sizeof(buffer)) < 0) | |
561 | return -1; | |
562 | ||
563 | if (!strcmp(buffer, "onTextData")) | |
564 | return 1; | |
565 | ||
566 | if (strcmp(buffer, "onMetaData") && strcmp(buffer, "onCuePoint")) | |
567 | return -1; | |
568 | ||
569 | // find the streams now so that amf_parse_object doesn't need to do | |
570 | // the lookup every time it is called. | |
571 | for (i = 0; i < s->nb_streams; i++) { | |
572 | stream = s->streams[i]; | |
573 | if (stream->codec->codec_type == AVMEDIA_TYPE_VIDEO) | |
574 | vstream = stream; | |
575 | else if (stream->codec->codec_type == AVMEDIA_TYPE_AUDIO) | |
576 | astream = stream; | |
577 | else if (stream->codec->codec_type == AVMEDIA_TYPE_DATA) | |
578 | dstream = stream; | |
579 | } | |
580 | ||
581 | // parse the second object (we want a mixed array) | |
582 | if (amf_parse_object(s, astream, vstream, buffer, next_pos, 0) < 0) | |
583 | return -1; | |
584 | ||
585 | return 0; | |
586 | } | |
587 | ||
588 | static int flv_read_header(AVFormatContext *s) | |
589 | { | |
590 | int offset, flags; | |
591 | ||
592 | avio_skip(s->pb, 4); | |
593 | flags = avio_r8(s->pb); | |
594 | ||
595 | s->ctx_flags |= AVFMTCTX_NOHEADER; | |
596 | ||
597 | if (flags & FLV_HEADER_FLAG_HASVIDEO) | |
598 | if (!create_stream(s, AVMEDIA_TYPE_VIDEO)) | |
599 | return AVERROR(ENOMEM); | |
600 | if (flags & FLV_HEADER_FLAG_HASAUDIO) | |
601 | if (!create_stream(s, AVMEDIA_TYPE_AUDIO)) | |
602 | return AVERROR(ENOMEM); | |
603 | // Flag doesn't indicate whether or not there is script-data present. Must | |
604 | // create that stream if it's encountered. | |
605 | ||
606 | offset = avio_rb32(s->pb); | |
607 | avio_seek(s->pb, offset, SEEK_SET); | |
608 | avio_skip(s->pb, 4); | |
609 | ||
610 | s->start_time = 0; | |
611 | ||
612 | return 0; | |
613 | } | |
614 | ||
615 | static int flv_read_close(AVFormatContext *s) | |
616 | { | |
617 | int i; | |
618 | FLVContext *flv = s->priv_data; | |
619 | for (i=0; i<FLV_STREAM_TYPE_NB; i++) | |
620 | av_freep(&flv->new_extradata[i]); | |
621 | return 0; | |
622 | } | |
623 | ||
624 | static int flv_get_extradata(AVFormatContext *s, AVStream *st, int size) | |
625 | { | |
092a9121 | 626 | av_freep(&st->codec->extradata); |
2ba45a60 DM |
627 | if (ff_get_extradata(st->codec, s->pb, size) < 0) |
628 | return AVERROR(ENOMEM); | |
629 | return 0; | |
630 | } | |
631 | ||
632 | static int flv_queue_extradata(FLVContext *flv, AVIOContext *pb, int stream, | |
633 | int size) | |
634 | { | |
635 | av_free(flv->new_extradata[stream]); | |
636 | flv->new_extradata[stream] = av_mallocz(size + | |
637 | FF_INPUT_BUFFER_PADDING_SIZE); | |
638 | if (!flv->new_extradata[stream]) | |
639 | return AVERROR(ENOMEM); | |
640 | flv->new_extradata_size[stream] = size; | |
641 | avio_read(pb, flv->new_extradata[stream], size); | |
642 | return 0; | |
643 | } | |
644 | ||
645 | static void clear_index_entries(AVFormatContext *s, int64_t pos) | |
646 | { | |
647 | int i, j, out; | |
648 | av_log(s, AV_LOG_WARNING, | |
649 | "Found invalid index entries, clearing the index.\n"); | |
650 | for (i = 0; i < s->nb_streams; i++) { | |
651 | AVStream *st = s->streams[i]; | |
652 | /* Remove all index entries that point to >= pos */ | |
653 | out = 0; | |
654 | for (j = 0; j < st->nb_index_entries; j++) | |
655 | if (st->index_entries[j].pos < pos) | |
656 | st->index_entries[out++] = st->index_entries[j]; | |
657 | st->nb_index_entries = out; | |
658 | } | |
659 | } | |
660 | ||
661 | static int amf_skip_tag(AVIOContext *pb, AMFDataType type) | |
662 | { | |
663 | int nb = -1, ret, parse_name = 1; | |
664 | ||
665 | switch (type) { | |
666 | case AMF_DATA_TYPE_NUMBER: | |
667 | avio_skip(pb, 8); | |
668 | break; | |
669 | case AMF_DATA_TYPE_BOOL: | |
670 | avio_skip(pb, 1); | |
671 | break; | |
672 | case AMF_DATA_TYPE_STRING: | |
673 | avio_skip(pb, avio_rb16(pb)); | |
674 | break; | |
675 | case AMF_DATA_TYPE_ARRAY: | |
676 | parse_name = 0; | |
677 | case AMF_DATA_TYPE_MIXEDARRAY: | |
678 | nb = avio_rb32(pb); | |
679 | case AMF_DATA_TYPE_OBJECT: | |
680 | while(!pb->eof_reached && (nb-- > 0 || type != AMF_DATA_TYPE_ARRAY)) { | |
681 | if (parse_name) { | |
682 | int size = avio_rb16(pb); | |
683 | if (!size) { | |
684 | avio_skip(pb, 1); | |
685 | break; | |
686 | } | |
687 | avio_skip(pb, size); | |
688 | } | |
689 | if ((ret = amf_skip_tag(pb, avio_r8(pb))) < 0) | |
690 | return ret; | |
691 | } | |
692 | break; | |
693 | case AMF_DATA_TYPE_NULL: | |
694 | case AMF_DATA_TYPE_OBJECT_END: | |
695 | break; | |
696 | default: | |
697 | return AVERROR_INVALIDDATA; | |
698 | } | |
699 | return 0; | |
700 | } | |
701 | ||
702 | static int flv_data_packet(AVFormatContext *s, AVPacket *pkt, | |
703 | int64_t dts, int64_t next) | |
704 | { | |
705 | AVIOContext *pb = s->pb; | |
706 | AVStream *st = NULL; | |
707 | char buf[20]; | |
708 | int ret = AVERROR_INVALIDDATA; | |
709 | int i, length = -1; | |
710 | ||
711 | switch (avio_r8(pb)) { | |
712 | case AMF_DATA_TYPE_MIXEDARRAY: | |
713 | avio_seek(pb, 4, SEEK_CUR); | |
714 | case AMF_DATA_TYPE_OBJECT: | |
715 | break; | |
716 | default: | |
717 | goto skip; | |
718 | } | |
719 | ||
720 | while ((ret = amf_get_string(pb, buf, sizeof(buf))) > 0) { | |
721 | AMFDataType type = avio_r8(pb); | |
722 | if (type == AMF_DATA_TYPE_STRING && !strcmp(buf, "text")) { | |
723 | length = avio_rb16(pb); | |
724 | ret = av_get_packet(pb, pkt, length); | |
725 | if (ret < 0) | |
726 | goto skip; | |
727 | else | |
728 | break; | |
729 | } else { | |
730 | if ((ret = amf_skip_tag(pb, type)) < 0) | |
731 | goto skip; | |
732 | } | |
733 | } | |
734 | ||
735 | if (length < 0) { | |
736 | ret = AVERROR_INVALIDDATA; | |
737 | goto skip; | |
738 | } | |
739 | ||
740 | for (i = 0; i < s->nb_streams; i++) { | |
741 | st = s->streams[i]; | |
742 | if (st->codec->codec_type == AVMEDIA_TYPE_DATA) | |
743 | break; | |
744 | } | |
745 | ||
746 | if (i == s->nb_streams) { | |
747 | st = create_stream(s, AVMEDIA_TYPE_DATA); | |
748 | if (!st) | |
f6fa7814 | 749 | return AVERROR(ENOMEM); |
2ba45a60 DM |
750 | st->codec->codec_id = AV_CODEC_ID_TEXT; |
751 | } | |
752 | ||
753 | pkt->dts = dts; | |
754 | pkt->pts = dts; | |
755 | pkt->size = ret; | |
756 | ||
757 | pkt->stream_index = st->index; | |
758 | pkt->flags |= AV_PKT_FLAG_KEY; | |
759 | ||
760 | skip: | |
761 | avio_seek(s->pb, next + 4, SEEK_SET); | |
762 | ||
763 | return ret; | |
764 | } | |
765 | ||
766 | static int flv_read_packet(AVFormatContext *s, AVPacket *pkt) | |
767 | { | |
768 | FLVContext *flv = s->priv_data; | |
769 | int ret, i, type, size, flags; | |
770 | int stream_type=-1; | |
771 | int64_t next, pos, meta_pos; | |
772 | int64_t dts, pts = AV_NOPTS_VALUE; | |
773 | int av_uninit(channels); | |
774 | int av_uninit(sample_rate); | |
775 | AVStream *st = NULL; | |
776 | ||
777 | /* pkt size is repeated at end. skip it */ | |
778 | for (;; avio_skip(s->pb, 4)) { | |
779 | pos = avio_tell(s->pb); | |
780 | type = (avio_r8(s->pb) & 0x1F); | |
781 | size = avio_rb24(s->pb); | |
782 | dts = avio_rb24(s->pb); | |
783 | dts |= avio_r8(s->pb) << 24; | |
784 | av_dlog(s, "type:%d, size:%d, dts:%"PRId64" pos:%"PRId64"\n", type, size, dts, avio_tell(s->pb)); | |
785 | if (avio_feof(s->pb)) | |
786 | return AVERROR_EOF; | |
787 | avio_skip(s->pb, 3); /* stream id, always 0 */ | |
788 | flags = 0; | |
789 | ||
790 | if (flv->validate_next < flv->validate_count) { | |
791 | int64_t validate_pos = flv->validate_index[flv->validate_next].pos; | |
792 | if (pos == validate_pos) { | |
793 | if (FFABS(dts - flv->validate_index[flv->validate_next].dts) <= | |
794 | VALIDATE_INDEX_TS_THRESH) { | |
795 | flv->validate_next++; | |
796 | } else { | |
797 | clear_index_entries(s, validate_pos); | |
798 | flv->validate_count = 0; | |
799 | } | |
800 | } else if (pos > validate_pos) { | |
801 | clear_index_entries(s, validate_pos); | |
802 | flv->validate_count = 0; | |
803 | } | |
804 | } | |
805 | ||
806 | if (size == 0) | |
807 | continue; | |
808 | ||
809 | next = size + avio_tell(s->pb); | |
810 | ||
811 | if (type == FLV_TAG_TYPE_AUDIO) { | |
812 | stream_type = FLV_STREAM_TYPE_AUDIO; | |
813 | flags = avio_r8(s->pb); | |
814 | size--; | |
815 | } else if (type == FLV_TAG_TYPE_VIDEO) { | |
816 | stream_type = FLV_STREAM_TYPE_VIDEO; | |
817 | flags = avio_r8(s->pb); | |
818 | size--; | |
819 | if ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_VIDEO_INFO_CMD) | |
820 | goto skip; | |
821 | } else if (type == FLV_TAG_TYPE_META) { | |
822 | stream_type=FLV_STREAM_TYPE_DATA; | |
823 | if (size > 13 + 1 + 4 && dts == 0) { // Header-type metadata stuff | |
824 | meta_pos = avio_tell(s->pb); | |
825 | if (flv_read_metabody(s, next) == 0) { | |
826 | goto skip; | |
827 | } | |
828 | avio_seek(s->pb, meta_pos, SEEK_SET); | |
829 | } | |
830 | } else { | |
831 | av_log(s, AV_LOG_DEBUG, | |
832 | "Skipping flv packet: type %d, size %d, flags %d.\n", | |
833 | type, size, flags); | |
834 | skip: | |
835 | avio_seek(s->pb, next, SEEK_SET); | |
836 | continue; | |
837 | } | |
838 | ||
839 | /* skip empty data packets */ | |
840 | if (!size) | |
841 | continue; | |
842 | ||
843 | /* now find stream */ | |
844 | for (i = 0; i < s->nb_streams; i++) { | |
845 | st = s->streams[i]; | |
846 | if (stream_type == FLV_STREAM_TYPE_AUDIO) { | |
847 | if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && | |
848 | (s->audio_codec_id || flv_same_audio_codec(st->codec, flags))) | |
849 | break; | |
850 | } else if (stream_type == FLV_STREAM_TYPE_VIDEO) { | |
851 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && | |
852 | (s->video_codec_id || flv_same_video_codec(st->codec, flags))) | |
853 | break; | |
854 | } else if (stream_type == FLV_STREAM_TYPE_DATA) { | |
855 | if (st->codec->codec_type == AVMEDIA_TYPE_DATA) | |
856 | break; | |
857 | } | |
858 | } | |
859 | if (i == s->nb_streams) { | |
860 | static const enum AVMediaType stream_types[] = {AVMEDIA_TYPE_VIDEO, AVMEDIA_TYPE_AUDIO, AVMEDIA_TYPE_DATA}; | |
861 | av_log(s, AV_LOG_WARNING, "Stream discovered after head already parsed\n"); | |
862 | st = create_stream(s, stream_types[stream_type]); | |
863 | if (!st) | |
864 | return AVERROR(ENOMEM); | |
865 | ||
866 | } | |
867 | av_dlog(s, "%d %X %d \n", stream_type, flags, st->discard); | |
868 | ||
869 | if ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY || | |
870 | stream_type == FLV_STREAM_TYPE_AUDIO) | |
871 | av_add_index_entry(st, pos, dts, size, 0, AVINDEX_KEYFRAME); | |
872 | ||
873 | if ( (st->discard >= AVDISCARD_NONKEY && !((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY || (stream_type == FLV_STREAM_TYPE_AUDIO))) | |
874 | ||(st->discard >= AVDISCARD_BIDIR && ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_DISP_INTER && (stream_type == FLV_STREAM_TYPE_VIDEO))) | |
875 | || st->discard >= AVDISCARD_ALL | |
876 | ) { | |
877 | avio_seek(s->pb, next, SEEK_SET); | |
878 | continue; | |
879 | } | |
880 | break; | |
881 | } | |
882 | ||
883 | // if not streamed and no duration from metadata then seek to end to find | |
884 | // the duration from the timestamps | |
885 | if (s->pb->seekable && (!s->duration || s->duration == AV_NOPTS_VALUE) && !flv->searched_for_end) { | |
886 | int size; | |
887 | const int64_t pos = avio_tell(s->pb); | |
f6fa7814 DM |
888 | // Read the last 4 bytes of the file, this should be the size of the |
889 | // previous FLV tag. Use the timestamp of its payload as duration. | |
2ba45a60 DM |
890 | int64_t fsize = avio_size(s->pb); |
891 | retry_duration: | |
892 | avio_seek(s->pb, fsize - 4, SEEK_SET); | |
893 | size = avio_rb32(s->pb); | |
f6fa7814 DM |
894 | // Seek to the start of the last FLV tag at position (fsize - 4 - size) |
895 | // but skip the byte indicating the type. | |
2ba45a60 DM |
896 | avio_seek(s->pb, fsize - 3 - size, SEEK_SET); |
897 | if (size == avio_rb24(s->pb) + 11) { | |
898 | uint32_t ts = avio_rb24(s->pb); | |
899 | ts |= avio_r8(s->pb) << 24; | |
900 | if (ts) | |
901 | s->duration = ts * (int64_t)AV_TIME_BASE / 1000; | |
902 | else if (fsize >= 8 && fsize - 8 >= size) { | |
903 | fsize -= size+4; | |
904 | goto retry_duration; | |
905 | } | |
906 | } | |
907 | ||
908 | avio_seek(s->pb, pos, SEEK_SET); | |
909 | flv->searched_for_end = 1; | |
910 | } | |
911 | ||
912 | if (stream_type == FLV_STREAM_TYPE_AUDIO) { | |
913 | int bits_per_coded_sample; | |
914 | channels = (flags & FLV_AUDIO_CHANNEL_MASK) == FLV_STEREO ? 2 : 1; | |
915 | sample_rate = 44100 << ((flags & FLV_AUDIO_SAMPLERATE_MASK) >> | |
916 | FLV_AUDIO_SAMPLERATE_OFFSET) >> 3; | |
917 | bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8; | |
918 | if (!st->codec->channels || !st->codec->sample_rate || | |
919 | !st->codec->bits_per_coded_sample) { | |
920 | st->codec->channels = channels; | |
921 | st->codec->channel_layout = channels == 1 | |
922 | ? AV_CH_LAYOUT_MONO | |
923 | : AV_CH_LAYOUT_STEREO; | |
924 | st->codec->sample_rate = sample_rate; | |
925 | st->codec->bits_per_coded_sample = bits_per_coded_sample; | |
926 | } | |
927 | if (!st->codec->codec_id) { | |
928 | flv_set_audio_codec(s, st, st->codec, | |
929 | flags & FLV_AUDIO_CODECID_MASK); | |
930 | flv->last_sample_rate = | |
931 | sample_rate = st->codec->sample_rate; | |
932 | flv->last_channels = | |
933 | channels = st->codec->channels; | |
934 | } else { | |
935 | AVCodecContext ctx = {0}; | |
936 | ctx.sample_rate = sample_rate; | |
f6fa7814 | 937 | ctx.bits_per_coded_sample = bits_per_coded_sample; |
2ba45a60 DM |
938 | flv_set_audio_codec(s, st, &ctx, flags & FLV_AUDIO_CODECID_MASK); |
939 | sample_rate = ctx.sample_rate; | |
940 | } | |
941 | } else if (stream_type == FLV_STREAM_TYPE_VIDEO) { | |
942 | size -= flv_set_video_codec(s, st, flags & FLV_VIDEO_CODECID_MASK, 1); | |
943 | } | |
944 | ||
945 | if (st->codec->codec_id == AV_CODEC_ID_AAC || | |
946 | st->codec->codec_id == AV_CODEC_ID_H264 || | |
947 | st->codec->codec_id == AV_CODEC_ID_MPEG4) { | |
948 | int type = avio_r8(s->pb); | |
949 | size--; | |
950 | if (st->codec->codec_id == AV_CODEC_ID_H264 || st->codec->codec_id == AV_CODEC_ID_MPEG4) { | |
951 | // sign extension | |
952 | int32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000; | |
953 | pts = dts + cts; | |
954 | if (cts < 0) { // dts might be wrong | |
955 | if (!flv->wrong_dts) | |
956 | av_log(s, AV_LOG_WARNING, | |
957 | "Negative cts, previous timestamps might be wrong.\n"); | |
958 | flv->wrong_dts = 1; | |
959 | } else if (FFABS(dts - pts) > 1000*60*15) { | |
960 | av_log(s, AV_LOG_WARNING, | |
961 | "invalid timestamps %"PRId64" %"PRId64"\n", dts, pts); | |
962 | dts = pts = AV_NOPTS_VALUE; | |
963 | } | |
964 | } | |
965 | if (type == 0 && (!st->codec->extradata || st->codec->codec_id == AV_CODEC_ID_AAC || | |
966 | st->codec->codec_id == AV_CODEC_ID_H264)) { | |
967 | AVDictionaryEntry *t; | |
968 | ||
969 | if (st->codec->extradata) { | |
970 | if ((ret = flv_queue_extradata(flv, s->pb, stream_type, size)) < 0) | |
971 | return ret; | |
972 | ret = AVERROR(EAGAIN); | |
973 | goto leave; | |
974 | } | |
975 | if ((ret = flv_get_extradata(s, st, size)) < 0) | |
976 | return ret; | |
977 | ||
978 | /* Workaround for buggy Omnia A/XE encoder */ | |
979 | t = av_dict_get(s->metadata, "Encoder", NULL, 0); | |
980 | if (st->codec->codec_id == AV_CODEC_ID_AAC && t && !strcmp(t->value, "Omnia A/XE")) | |
981 | st->codec->extradata_size = 2; | |
982 | ||
983 | if (st->codec->codec_id == AV_CODEC_ID_AAC && 0) { | |
984 | MPEG4AudioConfig cfg; | |
985 | ||
986 | if (avpriv_mpeg4audio_get_config(&cfg, st->codec->extradata, | |
987 | st->codec->extradata_size * 8, 1) >= 0) { | |
988 | st->codec->channels = cfg.channels; | |
989 | st->codec->channel_layout = 0; | |
990 | if (cfg.ext_sample_rate) | |
991 | st->codec->sample_rate = cfg.ext_sample_rate; | |
992 | else | |
993 | st->codec->sample_rate = cfg.sample_rate; | |
994 | av_dlog(s, "mp4a config channels %d sample rate %d\n", | |
995 | st->codec->channels, st->codec->sample_rate); | |
996 | } | |
997 | } | |
998 | ||
999 | ret = AVERROR(EAGAIN); | |
1000 | goto leave; | |
1001 | } | |
1002 | } | |
1003 | ||
1004 | /* skip empty data packets */ | |
1005 | if (!size) { | |
1006 | ret = AVERROR(EAGAIN); | |
1007 | goto leave; | |
1008 | } | |
1009 | ||
1010 | ret = av_get_packet(s->pb, pkt, size); | |
1011 | if (ret < 0) | |
1012 | return ret; | |
1013 | pkt->dts = dts; | |
1014 | pkt->pts = pts == AV_NOPTS_VALUE ? dts : pts; | |
1015 | pkt->stream_index = st->index; | |
1016 | if (flv->new_extradata[stream_type]) { | |
1017 | uint8_t *side = av_packet_new_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, | |
1018 | flv->new_extradata_size[stream_type]); | |
1019 | if (side) { | |
1020 | memcpy(side, flv->new_extradata[stream_type], | |
1021 | flv->new_extradata_size[stream_type]); | |
1022 | av_freep(&flv->new_extradata[stream_type]); | |
1023 | flv->new_extradata_size[stream_type] = 0; | |
1024 | } | |
1025 | } | |
1026 | if (stream_type == FLV_STREAM_TYPE_AUDIO && | |
1027 | (sample_rate != flv->last_sample_rate || | |
1028 | channels != flv->last_channels)) { | |
1029 | flv->last_sample_rate = sample_rate; | |
1030 | flv->last_channels = channels; | |
1031 | ff_add_param_change(pkt, channels, 0, sample_rate, 0, 0); | |
1032 | } | |
1033 | ||
1034 | if ( stream_type == FLV_STREAM_TYPE_AUDIO || | |
1035 | ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY) || | |
1036 | stream_type == FLV_STREAM_TYPE_DATA) | |
1037 | pkt->flags |= AV_PKT_FLAG_KEY; | |
1038 | ||
1039 | leave: | |
1040 | avio_skip(s->pb, 4); | |
1041 | return ret; | |
1042 | } | |
1043 | ||
1044 | static int flv_read_seek(AVFormatContext *s, int stream_index, | |
1045 | int64_t ts, int flags) | |
1046 | { | |
1047 | FLVContext *flv = s->priv_data; | |
1048 | flv->validate_count = 0; | |
1049 | return avio_seek_time(s->pb, stream_index, ts, flags); | |
1050 | } | |
1051 | ||
1052 | #define OFFSET(x) offsetof(FLVContext, x) | |
1053 | #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM | |
1054 | static const AVOption options[] = { | |
1055 | { "flv_metadata", "Allocate streams according to the onMetaData array", OFFSET(trust_metadata), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VD }, | |
1056 | { NULL } | |
1057 | }; | |
1058 | ||
1059 | static const AVClass flv_class = { | |
1060 | .class_name = "flvdec", | |
1061 | .item_name = av_default_item_name, | |
1062 | .option = options, | |
1063 | .version = LIBAVUTIL_VERSION_INT, | |
1064 | }; | |
1065 | ||
1066 | AVInputFormat ff_flv_demuxer = { | |
1067 | .name = "flv", | |
1068 | .long_name = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"), | |
1069 | .priv_data_size = sizeof(FLVContext), | |
1070 | .read_probe = flv_probe, | |
1071 | .read_header = flv_read_header, | |
1072 | .read_packet = flv_read_packet, | |
1073 | .read_seek = flv_read_seek, | |
1074 | .read_close = flv_read_close, | |
1075 | .extensions = "flv", | |
1076 | .priv_class = &flv_class, | |
1077 | }; | |
1078 | ||
1079 | static const AVClass live_flv_class = { | |
1080 | .class_name = "live_flvdec", | |
1081 | .item_name = av_default_item_name, | |
1082 | .option = options, | |
1083 | .version = LIBAVUTIL_VERSION_INT, | |
1084 | }; | |
1085 | ||
1086 | AVInputFormat ff_live_flv_demuxer = { | |
1087 | .name = "live_flv", | |
1088 | .long_name = NULL_IF_CONFIG_SMALL("live RTMP FLV (Flash Video)"), | |
1089 | .priv_data_size = sizeof(FLVContext), | |
1090 | .read_probe = live_flv_probe, | |
1091 | .read_header = flv_read_header, | |
1092 | .read_packet = flv_read_packet, | |
1093 | .read_seek = flv_read_seek, | |
1094 | .read_close = flv_read_close, | |
1095 | .extensions = "flv", | |
1096 | .priv_class = &live_flv_class, | |
1097 | .flags = AVFMT_TS_DISCONT | |
1098 | }; |