ac3enc: doxygen update.
[libav.git] / libavformat / flvenc.c
CommitLineData
d4f5d74a 1/*
7fbde343 2 * FLV muxer
2912e87a 3 * Copyright (c) 2003 The Libav Project
d4f5d74a 4 *
2912e87a 5 * This file is part of Libav.
b78e7197 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
d4f5d74a
GM
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
d4f5d74a 11 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
d4f5d74a
GM
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
2912e87a 18 * License along with Libav; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
d4f5d74a 20 */
ee8aecd2
MR
21
22#include "libavutil/intfloat_readwrite.h"
d4f5d74a 23#include "avformat.h"
6cac3a3b 24#include "flv.h"
80b39e1c 25#include "internal.h"
f23496b5 26#include "avc.h"
16f82508 27#include "metadata.h"
d2d67e42 28#include "libavutil/dict.h"
d4f5d74a 29
068f2a22
MN
30#undef NDEBUG
31#include <assert.h>
32
7caf0cc6 33static const AVCodecTag flv_video_codec_ids[] = {
148c9bdb
AH
34 {CODEC_ID_FLV1, FLV_CODECID_H263 },
35 {CODEC_ID_FLASHSV, FLV_CODECID_SCREEN},
1b88277b 36 {CODEC_ID_FLASHSV2, FLV_CODECID_SCREEN2},
148c9bdb 37 {CODEC_ID_VP6F, FLV_CODECID_VP6 },
09d8c0ae 38 {CODEC_ID_VP6, FLV_CODECID_VP6 },
f23496b5 39 {CODEC_ID_H264, FLV_CODECID_H264 },
148c9bdb
AH
40 {CODEC_ID_NONE, 0}
41};
42
7caf0cc6 43static const AVCodecTag flv_audio_codec_ids[] = {
148c9bdb 44 {CODEC_ID_MP3, FLV_CODECID_MP3 >> FLV_AUDIO_CODECID_OFFSET},
8e9efe43 45 {CODEC_ID_PCM_U8, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET},
44de39f9 46 {CODEC_ID_PCM_S16BE, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET},
148c9bdb
AH
47 {CODEC_ID_PCM_S16LE, FLV_CODECID_PCM_LE >> FLV_AUDIO_CODECID_OFFSET},
48 {CODEC_ID_ADPCM_SWF, FLV_CODECID_ADPCM >> FLV_AUDIO_CODECID_OFFSET},
f23496b5 49 {CODEC_ID_AAC, FLV_CODECID_AAC >> FLV_AUDIO_CODECID_OFFSET},
b7d1cd02 50 {CODEC_ID_NELLYMOSER, FLV_CODECID_NELLYMOSER >> FLV_AUDIO_CODECID_OFFSET},
046c4001 51 {CODEC_ID_SPEEX, FLV_CODECID_SPEEX >> FLV_AUDIO_CODECID_OFFSET},
148c9bdb
AH
52 {CODEC_ID_NONE, 0}
53};
54
d4f5d74a 55typedef struct FLVContext {
11a8e425 56 int reserved;
bc5c918e
DB
57 int64_t duration_offset;
58 int64_t filesize_offset;
634b8cfa 59 int64_t duration;
d4f5d74a
GM
60} FLVContext;
61
ef74e397
JR
62typedef struct FLVStreamContext {
63 int delay; ///< first dts delay for each stream (needed for AVC & Speex)
64 int64_t last_ts; ///< last timestamp for each stream
65} FLVStreamContext;
66
37cdf93d 67static int get_audio_flags(AVCodecContext *enc){
dd1c8f3e 68 int flags = (enc->bits_per_coded_sample == 16) ? FLV_SAMPLESSIZE_16BIT : FLV_SAMPLESSIZE_8BIT;
37cdf93d 69
f23496b5
BC
70 if (enc->codec_id == CODEC_ID_AAC) // specs force these parameters
71 return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ | FLV_SAMPLESSIZE_16BIT | FLV_STEREO;
046c4001
JR
72 else if (enc->codec_id == CODEC_ID_SPEEX) {
73 if (enc->sample_rate != 16000) {
74 av_log(enc, AV_LOG_ERROR, "flv only supports wideband (16kHz) Speex audio\n");
75 return -1;
76 }
77 if (enc->channels != 1) {
78 av_log(enc, AV_LOG_ERROR, "flv only supports mono Speex audio\n");
79 return -1;
80 }
046c4001
JR
81 return FLV_CODECID_SPEEX | FLV_SAMPLERATE_11025HZ | FLV_SAMPLESSIZE_16BIT;
82 } else {
37cdf93d
MN
83 switch (enc->sample_rate) {
84 case 44100:
6cac3a3b 85 flags |= FLV_SAMPLERATE_44100HZ;
37cdf93d
MN
86 break;
87 case 22050:
6cac3a3b 88 flags |= FLV_SAMPLERATE_22050HZ;
37cdf93d
MN
89 break;
90 case 11025:
6cac3a3b 91 flags |= FLV_SAMPLERATE_11025HZ;
37cdf93d
MN
92 break;
93 case 8000: //nellymoser only
94 case 5512: //not mp3
4838727e 95 if(enc->codec_id != CODEC_ID_MP3){
ec627278
MN
96 flags |= FLV_SAMPLERATE_SPECIAL;
97 break;
4838727e 98 }
37cdf93d 99 default:
755bfeab 100 av_log(enc, AV_LOG_ERROR, "flv does not support that sample rate, choose from (44100, 22050, 11025).\n");
37cdf93d
MN
101 return -1;
102 }
f23496b5 103 }
37cdf93d
MN
104
105 if (enc->channels > 1) {
6cac3a3b 106 flags |= FLV_STEREO;
37cdf93d 107 }
115329f1 108
37cdf93d
MN
109 switch(enc->codec_id){
110 case CODEC_ID_MP3:
6cac3a3b 111 flags |= FLV_CODECID_MP3 | FLV_SAMPLESSIZE_16BIT;
37cdf93d 112 break;
8e9efe43 113 case CODEC_ID_PCM_U8:
44de39f9 114 flags |= FLV_CODECID_PCM | FLV_SAMPLESSIZE_8BIT;
bb270c08 115 break;
923bd441 116 case CODEC_ID_PCM_S16BE:
44de39f9 117 flags |= FLV_CODECID_PCM | FLV_SAMPLESSIZE_16BIT;
bb270c08 118 break;
923bd441 119 case CODEC_ID_PCM_S16LE:
6cac3a3b 120 flags |= FLV_CODECID_PCM_LE | FLV_SAMPLESSIZE_16BIT;
bb270c08 121 break;
2fde8aae 122 case CODEC_ID_ADPCM_SWF:
e9509536 123 flags |= FLV_CODECID_ADPCM | FLV_SAMPLESSIZE_16BIT;
bb270c08 124 break;
b7d1cd02 125 case CODEC_ID_NELLYMOSER:
8ddd280d
AW
126 if (enc->sample_rate == 8000) {
127 flags |= FLV_CODECID_NELLYMOSER_8KHZ_MONO | FLV_SAMPLESSIZE_16BIT;
128 } else {
129 flags |= FLV_CODECID_NELLYMOSER | FLV_SAMPLESSIZE_16BIT;
130 }
b7d1cd02 131 break;
37cdf93d
MN
132 case 0:
133 flags |= enc->codec_tag<<4;
134 break;
135 default:
a254c574 136 av_log(enc, AV_LOG_ERROR, "codec not compatible with flv\n");
37cdf93d
MN
137 return -1;
138 }
115329f1 139
37cdf93d
MN
140 return flags;
141}
142
ae628ec1 143static void put_amf_string(AVIOContext *pb, const char *str)
fd0fb306
MN
144{
145 size_t len = strlen(str);
77eb5504
AK
146 avio_wb16(pb, len);
147 avio_write(pb, str, len);
fd0fb306
MN
148}
149
ae628ec1 150static void put_avc_eos_tag(AVIOContext *pb, unsigned ts) {
77eb5504
AK
151 avio_w8(pb, FLV_TAG_TYPE_VIDEO);
152 avio_wb24(pb, 5); /* Tag Data Size */
153 avio_wb24(pb, ts); /* lower 24 bits of timestamp in ms*/
154 avio_w8(pb, (ts >> 24) & 0x7F); /* MSB of ts in ms*/
155 avio_wb24(pb, 0); /* StreamId = 0 */
156 avio_w8(pb, 23); /* ub[4] FrameType = 1, ub[4] CodecId = 7 */
157 avio_w8(pb, 2); /* AVC end of sequence */
158 avio_wb24(pb, 0); /* Always 0 for AVC EOS. */
159 avio_wb32(pb, 16); /* Size of FLV tag */
df4f1d51
TF
160}
161
ae628ec1 162static void put_amf_double(AVIOContext *pb, double d)
fd0fb306 163{
77eb5504
AK
164 avio_w8(pb, AMF_DATA_TYPE_NUMBER);
165 avio_wb64(pb, av_dbl2int(d));
fd0fb306
MN
166}
167
ae628ec1 168static void put_amf_bool(AVIOContext *pb, int b) {
77eb5504
AK
169 avio_w8(pb, AMF_DATA_TYPE_BOOL);
170 avio_w8(pb, !!b);
148c9bdb
AH
171}
172
d4f5d74a
GM
173static int flv_write_header(AVFormatContext *s)
174{
ae628ec1 175 AVIOContext *pb = s->pb;
d4f5d74a 176 FLVContext *flv = s->priv_data;
5366f15d 177 AVCodecContext *audio_enc = NULL, *video_enc = NULL;
cad0c375 178 int i, metadata_count = 0;
fd0fb306 179 double framerate = 0.0;
cad0c375 180 int64_t metadata_size_pos, data_size, metadata_count_pos;
d2d67e42 181 AVDictionaryEntry *tag = NULL;
d4f5d74a 182
11a8e425 183 for(i=0; i<s->nb_streams; i++){
01f4895c 184 AVCodecContext *enc = s->streams[i]->codec;
ef74e397 185 FLVStreamContext *sc;
72415b2a 186 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
fd0fb306
MN
187 if (s->streams[i]->r_frame_rate.den && s->streams[i]->r_frame_rate.num) {
188 framerate = av_q2d(s->streams[i]->r_frame_rate);
189 } else {
190 framerate = 1/av_q2d(s->streams[i]->codec->time_base);
191 }
5366f15d
BC
192 video_enc = enc;
193 if(enc->codec_tag == 0) {
148c9bdb
AH
194 av_log(enc, AV_LOG_ERROR, "video codec not compatible with flv\n");
195 return -1;
196 }
fd0fb306 197 } else {
5366f15d 198 audio_enc = enc;
c45388b1
MN
199 if(get_audio_flags(enc)<0)
200 return -1;
fd0fb306 201 }
254629b1 202 av_set_pts_info(s->streams[i], 32, 1, 1000); /* 32 bit pts in ms */
ef74e397
JR
203
204 sc = av_mallocz(sizeof(FLVStreamContext));
205 if (!sc)
206 return AVERROR(ENOMEM);
207 s->streams[i]->priv_data = sc;
208 sc->last_ts = -1;
c45388b1 209 }
bbc413f9 210 avio_write(pb, "FLV", 3);
77eb5504
AK
211 avio_w8(pb,1);
212 avio_w8(pb, FLV_HEADER_FLAG_HASAUDIO * !!audio_enc
5366f15d 213 + FLV_HEADER_FLAG_HASVIDEO * !!video_enc);
77eb5504
AK
214 avio_wb32(pb,9);
215 avio_wb32(pb,0);
c45388b1
MN
216
217 for(i=0; i<s->nb_streams; i++){
218 if(s->streams[i]->codec->codec_tag == 5){
77eb5504
AK
219 avio_w8(pb,8); // message type
220 avio_wb24(pb,0); // include flags
221 avio_wb24(pb,0); // time stamp
222 avio_wb32(pb,0); // reserved
223 avio_wb32(pb,11); // size
11a8e425
MN
224 flv->reserved=5;
225 }
226 }
d4f5d74a 227
fd0fb306 228 /* write meta_tag */
77eb5504 229 avio_w8(pb, 18); // tag type META
a2704c97 230 metadata_size_pos= avio_tell(pb);
77eb5504
AK
231 avio_wb24(pb, 0); // size of data part (sum of all parts below)
232 avio_wb24(pb, 0); // time stamp
233 avio_wb32(pb, 0); // reserved
fd0fb306
MN
234
235 /* now data of data_size size */
236
237 /* first event name as a string */
77eb5504 238 avio_w8(pb, AMF_DATA_TYPE_STRING);
fd0fb306
MN
239 put_amf_string(pb, "onMetaData"); // 12 bytes
240
241 /* mixed array (hash) with size and string/type/data tuples */
77eb5504 242 avio_w8(pb, AMF_DATA_TYPE_MIXEDARRAY);
cad0c375
MS
243 metadata_count_pos = avio_tell(pb);
244 metadata_count = 5*!!video_enc + 5*!!audio_enc + 2; // +2 for duration and file size
245 avio_wb32(pb, metadata_count);
fd0fb306 246
634b8cfa 247 put_amf_string(pb, "duration");
a2704c97 248 flv->duration_offset= avio_tell(pb);
c5e1e982 249 put_amf_double(pb, s->duration / AV_TIME_BASE); // fill in the guessed duration, it'll be corrected later if incorrect
fd0fb306 250
5366f15d 251 if(video_enc){
fd0fb306 252 put_amf_string(pb, "width");
5366f15d 253 put_amf_double(pb, video_enc->width);
fd0fb306
MN
254
255 put_amf_string(pb, "height");
5366f15d 256 put_amf_double(pb, video_enc->height);
fd0fb306
MN
257
258 put_amf_string(pb, "videodatarate");
426a6f34 259 put_amf_double(pb, video_enc->bit_rate / 1024.0);
fd0fb306
MN
260
261 put_amf_string(pb, "framerate");
262 put_amf_double(pb, framerate);
148c9bdb
AH
263
264 put_amf_string(pb, "videocodecid");
5366f15d 265 put_amf_double(pb, video_enc->codec_tag);
fd0fb306
MN
266 }
267
5366f15d 268 if(audio_enc){
426a6f34
SK
269 put_amf_string(pb, "audiodatarate");
270 put_amf_double(pb, audio_enc->bit_rate / 1024.0);
271
fd0fb306 272 put_amf_string(pb, "audiosamplerate");
5366f15d 273 put_amf_double(pb, audio_enc->sample_rate);
148c9bdb
AH
274
275 put_amf_string(pb, "audiosamplesize");
8e9efe43 276 put_amf_double(pb, audio_enc->codec_id == CODEC_ID_PCM_U8 ? 8 : 16);
148c9bdb
AH
277
278 put_amf_string(pb, "stereo");
5366f15d 279 put_amf_bool(pb, audio_enc->channels == 2);
148c9bdb
AH
280
281 put_amf_string(pb, "audiocodecid");
5366f15d 282 put_amf_double(pb, audio_enc->codec_tag);
fd0fb306
MN
283 }
284
d2d67e42 285 while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
16f82508 286 put_amf_string(pb, tag->key);
77eb5504 287 avio_w8(pb, AMF_DATA_TYPE_STRING);
16f82508 288 put_amf_string(pb, tag->value);
cad0c375 289 metadata_count++;
16f82508
TT
290 }
291
634b8cfa 292 put_amf_string(pb, "filesize");
a2704c97 293 flv->filesize_offset= avio_tell(pb);
634b8cfa 294 put_amf_double(pb, 0); // delayed write
fd0fb306
MN
295
296 put_amf_string(pb, "");
77eb5504 297 avio_w8(pb, AMF_END_OF_OBJECT);
fd0fb306
MN
298
299 /* write total size of tag */
a2704c97 300 data_size= avio_tell(pb) - metadata_size_pos - 10;
cad0c375
MS
301
302 avio_seek(pb, metadata_count_pos, SEEK_SET);
303 avio_wb32(pb, metadata_count);
304
6b4aa5da 305 avio_seek(pb, metadata_size_pos, SEEK_SET);
77eb5504 306 avio_wb24(pb, data_size);
45a8a02a 307 avio_skip(pb, data_size + 10 - 3);
77eb5504 308 avio_wb32(pb, data_size + 11);
fd0fb306 309
f23496b5
BC
310 for (i = 0; i < s->nb_streams; i++) {
311 AVCodecContext *enc = s->streams[i]->codec;
312 if (enc->codec_id == CODEC_ID_AAC || enc->codec_id == CODEC_ID_H264) {
bc5c918e 313 int64_t pos;
77eb5504 314 avio_w8(pb, enc->codec_type == AVMEDIA_TYPE_VIDEO ?
f23496b5 315 FLV_TAG_TYPE_VIDEO : FLV_TAG_TYPE_AUDIO);
77eb5504
AK
316 avio_wb24(pb, 0); // size patched later
317 avio_wb24(pb, 0); // ts
318 avio_w8(pb, 0); // ts ext
319 avio_wb24(pb, 0); // streamid
a2704c97 320 pos = avio_tell(pb);
f23496b5 321 if (enc->codec_id == CODEC_ID_AAC) {
77eb5504
AK
322 avio_w8(pb, get_audio_flags(enc));
323 avio_w8(pb, 0); // AAC sequence header
324 avio_write(pb, enc->extradata, enc->extradata_size);
f23496b5 325 } else {
77eb5504
AK
326 avio_w8(pb, enc->codec_tag | FLV_FRAME_KEY); // flags
327 avio_w8(pb, 0); // AVC sequence header
328 avio_wb24(pb, 0); // composition time
f23496b5
BC
329 ff_isom_write_avcc(pb, enc->extradata, enc->extradata_size);
330 }
a2704c97 331 data_size = avio_tell(pb) - pos;
6b4aa5da 332 avio_seek(pb, -data_size - 10, SEEK_CUR);
77eb5504 333 avio_wb24(pb, data_size);
45a8a02a 334 avio_skip(pb, data_size + 10 - 3);
77eb5504 335 avio_wb32(pb, data_size + 11); // previous tag size
f23496b5
BC
336 }
337 }
338
d4f5d74a
GM
339 return 0;
340}
341
d4f5d74a
GM
342static int flv_write_trailer(AVFormatContext *s)
343{
14b32253 344 int64_t file_size;
14b32253 345
ae628ec1 346 AVIOContext *pb = s->pb;
d4f5d74a 347 FLVContext *flv = s->priv_data;
df4f1d51
TF
348 int i;
349
350 /* Add EOS tag */
351 for (i = 0; i < s->nb_streams; i++) {
352 AVCodecContext *enc = s->streams[i]->codec;
ef74e397 353 FLVStreamContext *sc = s->streams[i]->priv_data;
b9f9e59a 354 if (enc->codec_type == AVMEDIA_TYPE_VIDEO &&
df4f1d51 355 enc->codec_id == CODEC_ID_H264) {
ef74e397 356 put_avc_eos_tag(pb, sc->last_ts);
df4f1d51
TF
357 }
358 }
d4f5d74a 359
a2704c97 360 file_size = avio_tell(pb);
634b8cfa
BC
361
362 /* update informations */
6b4aa5da 363 avio_seek(pb, flv->duration_offset, SEEK_SET);
634b8cfa 364 put_amf_double(pb, flv->duration / (double)1000);
6b4aa5da 365 avio_seek(pb, flv->filesize_offset, SEEK_SET);
634b8cfa
BC
366 put_amf_double(pb, file_size);
367
6b4aa5da 368 avio_seek(pb, file_size, SEEK_SET);
d4f5d74a
GM
369 return 0;
370}
371
e928649b 372static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
d4f5d74a 373{
ae628ec1 374 AVIOContext *pb = s->pb;
01f4895c 375 AVCodecContext *enc = s->streams[pkt->stream_index]->codec;
d4f5d74a 376 FLVContext *flv = s->priv_data;
ef74e397 377 FLVStreamContext *sc = s->streams[pkt->stream_index]->priv_data;
f23496b5 378 unsigned ts;
e928649b 379 int size= pkt->size;
71e685b0 380 uint8_t *data= NULL;
f683dbdc 381 int flags, flags_size;
d4f5d74a 382
949b1a13 383// av_log(s, AV_LOG_DEBUG, "type:%d pts: %"PRId64" size:%d\n", enc->codec_type, timestamp, size);
115329f1 384
f23496b5
BC
385 if(enc->codec_id == CODEC_ID_VP6 || enc->codec_id == CODEC_ID_VP6F ||
386 enc->codec_id == CODEC_ID_AAC)
f683dbdc 387 flags_size= 2;
f23496b5
BC
388 else if(enc->codec_id == CODEC_ID_H264)
389 flags_size= 5;
f683dbdc
MN
390 else
391 flags_size= 1;
392
72415b2a 393 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
77eb5504 394 avio_w8(pb, FLV_TAG_TYPE_VIDEO);
09d8c0ae 395
bb85077f 396 flags = enc->codec_tag;
09d8c0ae
BL
397 if(flags == 0) {
398 av_log(enc, AV_LOG_ERROR, "video codec %X not compatible with flv\n",enc->codec_id);
399 return -1;
400 }
401
cc947f04 402 flags |= pkt->flags & AV_PKT_FLAG_KEY ? FLV_FRAME_KEY : FLV_FRAME_INTER;
75293f05 403 } else {
72415b2a 404 assert(enc->codec_type == AVMEDIA_TYPE_AUDIO);
37cdf93d 405 flags = get_audio_flags(enc);
115329f1 406
068f2a22 407 assert(size);
068f2a22 408
77eb5504 409 avio_w8(pb, FLV_TAG_TYPE_AUDIO);
75293f05
MN
410 }
411
7d637efa 412 if (enc->codec_id == CODEC_ID_H264) {
71e685b0
BC
413 /* check if extradata looks like mp4 formated */
414 if (enc->extradata_size > 0 && *(uint8_t*)enc->extradata != 1) {
415 if (ff_avc_parse_nal_units_buf(pkt->data, &data, &size) < 0)
416 return -1;
417 }
f23496b5 418 }
ef74e397
JR
419 if (!sc->delay && pkt->dts < 0)
420 sc->delay = -pkt->dts;
f23496b5 421
ef74e397 422 ts = pkt->dts + sc->delay; // add delay to force positive dts
4ee247a2
JR
423
424 /* check Speex packet duration */
ef74e397 425 if (enc->codec_id == CODEC_ID_SPEEX && ts - sc->last_ts > 160) {
4ee247a2
JR
426 av_log(s, AV_LOG_WARNING, "Warning: Speex stream has more than "
427 "8 frames per packet. Adobe Flash "
428 "Player cannot handle this!\n");
df4f1d51 429 }
4ee247a2 430
ef74e397
JR
431 if (sc->last_ts < ts)
432 sc->last_ts = ts;
4ee247a2 433
77eb5504
AK
434 avio_wb24(pb,size + flags_size);
435 avio_wb24(pb,ts);
436 avio_w8(pb,(ts >> 24) & 0x7F); // timestamps are 32bits _signed_
437 avio_wb24(pb,flv->reserved);
438 avio_w8(pb,flags);
09d8c0ae 439 if (enc->codec_id == CODEC_ID_VP6)
77eb5504 440 avio_w8(pb,0);
09d8c0ae 441 if (enc->codec_id == CODEC_ID_VP6F)
77eb5504 442 avio_w8(pb, enc->extradata_size ? enc->extradata[0] : 0);
f23496b5 443 else if (enc->codec_id == CODEC_ID_AAC)
77eb5504 444 avio_w8(pb,1); // AAC raw
f23496b5 445 else if (enc->codec_id == CODEC_ID_H264) {
77eb5504
AK
446 avio_w8(pb,1); // AVC NALU
447 avio_wb24(pb,pkt->pts - pkt->dts);
f23496b5 448 }
71e685b0 449
77eb5504 450 avio_write(pb, data ? data : pkt->data, size);
71e685b0 451
77eb5504 452 avio_wb32(pb,size+flags_size+11); // previous tag size
ef74e397 453 flv->duration = FFMAX(flv->duration, pkt->pts + sc->delay + pkt->duration);
115329f1 454
b7f2fdde 455 avio_flush(pb);
71e685b0
BC
456
457 av_free(data);
458
0e28e9ca 459 return pb->error;
d4f5d74a
GM
460}
461
c6610a21 462AVOutputFormat ff_flv_muxer = {
dfc2c4d9
AK
463 .name = "flv",
464 .long_name = NULL_IF_CONFIG_SMALL("FLV format"),
465 .mime_type = "video/x-flv",
466 .extensions = "flv",
467 .priv_data_size = sizeof(FLVContext),
b250f9c6 468#if CONFIG_LIBMP3LAME
dfc2c4d9 469 .audio_codec = CODEC_ID_MP3,
6ebe07fb 470#else // CONFIG_LIBMP3LAME
dfc2c4d9 471 .audio_codec = CODEC_ID_ADPCM_SWF,
6ebe07fb 472#endif // CONFIG_LIBMP3LAME
dfc2c4d9
AK
473 .video_codec = CODEC_ID_FLV1,
474 .write_header = flv_write_header,
475 .write_packet = flv_write_packet,
476 .write_trailer = flv_write_trailer,
c1854592 477 .codec_tag= (const AVCodecTag* const []){flv_video_codec_ids, flv_audio_codec_ids, 0},
e458dd0b 478 .flags= AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,
d4f5d74a 479};