Undefine DEBUG_SEEK.
[libav.git] / libavformat / utils.c
CommitLineData
de6d9b64
FB
1/*
2 * Various utilities for ffmpeg system
19720f15 3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
de6d9b64 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
19720f15
FB
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.
de6d9b64 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
de6d9b64 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19720f15
FB
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
de6d9b64 16 *
19720f15 17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
de6d9b64 20 */
8be1c656 21#include "avformat.h"
4eb72c6b 22#include "opt.h"
75e61b0e 23#include "avstring.h"
45da8124 24#include "riff.h"
82e4ac2c
RP
25#include <sys/time.h>
26#include <time.h>
c5510dd6 27
b754978a
MN
28#undef NDEBUG
29#include <assert.h>
30
e36bdf8b
DK
31/**
32 * @file libavformat/utils.c
33 * Various utility functions for using ffmpeg library.
34 */
35
f3a30e3a
LB
36static void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den);
37static void av_frac_add(AVFrac *f, int64_t incr);
f3a30e3a 38
e36bdf8b 39/** head of registered input format linked list. */
8b69867f 40AVInputFormat *first_iformat = NULL;
e36bdf8b 41/** head of registered output format linked list. */
8b69867f 42AVOutputFormat *first_oformat = NULL;
de6d9b64 43
b9a281db 44void av_register_input_format(AVInputFormat *format)
de6d9b64 45{
b9a281db
FB
46 AVInputFormat **p;
47 p = &first_iformat;
48 while (*p != NULL) p = &(*p)->next;
49 *p = format;
50 format->next = NULL;
51}
52
53void av_register_output_format(AVOutputFormat *format)
54{
55 AVOutputFormat **p;
56 p = &first_oformat;
de6d9b64
FB
57 while (*p != NULL) p = &(*p)->next;
58 *p = format;
59 format->next = NULL;
60}
61
5b25dfa7 62int match_ext(const char *filename, const char *extensions)
de6d9b64
FB
63{
64 const char *ext, *p;
65 char ext1[32], *q;
66
293ed23f
MN
67 if(!filename)
68 return 0;
115329f1 69
de6d9b64
FB
70 ext = strrchr(filename, '.');
71 if (ext) {
72 ext++;
73 p = extensions;
74 for(;;) {
75 q = ext1;
115329f1 76 while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
de6d9b64
FB
77 *q++ = *p++;
78 *q = '\0';
115329f1 79 if (!strcasecmp(ext1, ext))
de6d9b64 80 return 1;
115329f1 81 if (*p == '\0')
de6d9b64
FB
82 break;
83 p++;
84 }
85 }
86 return 0;
87}
88
115329f1 89AVOutputFormat *guess_format(const char *short_name, const char *filename,
b9a281db 90 const char *mime_type)
de6d9b64 91{
b9a281db 92 AVOutputFormat *fmt, *fmt_found;
de6d9b64
FB
93 int score_max, score;
94
87a0a681 95 /* specific test for image sequences */
ff70e601 96#ifdef CONFIG_IMAGE2_MUXER
115329f1 97 if (!short_name && filename &&
5c07cf53 98 av_filename_number_test(filename) &&
5b6d5596
MN
99 av_guess_image2_codec(filename) != CODEC_ID_NONE) {
100 return guess_format("image2", NULL, NULL);
101 }
ff70e601 102#endif
de6d9b64
FB
103 /* find the proper file type */
104 fmt_found = NULL;
105 score_max = 0;
b9a281db 106 fmt = first_oformat;
de6d9b64
FB
107 while (fmt != NULL) {
108 score = 0;
109 if (fmt->name && short_name && !strcmp(fmt->name, short_name))
110 score += 100;
111 if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
112 score += 10;
115329f1 113 if (filename && fmt->extensions &&
de6d9b64
FB
114 match_ext(filename, fmt->extensions)) {
115 score += 5;
116 }
117 if (score > score_max) {
118 score_max = score;
119 fmt_found = fmt;
120 }
121 fmt = fmt->next;
122 }
123 return fmt_found;
115329f1 124}
de6d9b64 125
115329f1 126AVOutputFormat *guess_stream_format(const char *short_name, const char *filename,
c5510dd6
PG
127 const char *mime_type)
128{
129 AVOutputFormat *fmt = guess_format(short_name, filename, mime_type);
130
131 if (fmt) {
132 AVOutputFormat *stream_fmt;
133 char stream_format_name[64];
134
135 snprintf(stream_format_name, sizeof(stream_format_name), "%s_stream", fmt->name);
136 stream_fmt = guess_format(stream_format_name, NULL, NULL);
137
138 if (stream_fmt)
139 fmt = stream_fmt;
140 }
141
142 return fmt;
143}
144
115329f1 145enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
5b6d5596
MN
146 const char *filename, const char *mime_type, enum CodecType type){
147 if(type == CODEC_TYPE_VIDEO){
148 enum CodecID codec_id= CODEC_ID_NONE;
149
ff70e601 150#ifdef CONFIG_IMAGE2_MUXER
ae214ac3 151 if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
5b6d5596
MN
152 codec_id= av_guess_image2_codec(filename);
153 }
ff70e601 154#endif
5b6d5596
MN
155 if(codec_id == CODEC_ID_NONE)
156 codec_id= fmt->video_codec;
157 return codec_id;
158 }else if(type == CODEC_TYPE_AUDIO)
159 return fmt->audio_codec;
160 else
161 return CODEC_ID_NONE;
162}
163
b9a281db
FB
164AVInputFormat *av_find_input_format(const char *short_name)
165{
166 AVInputFormat *fmt;
167 for(fmt = first_iformat; fmt != NULL; fmt = fmt->next) {
168 if (!strcmp(fmt->name, short_name))
169 return fmt;
170 }
171 return NULL;
172}
173
de6d9b64
FB
174/* memory handling */
175
90ad92b3 176void av_destruct_packet(AVPacket *pkt)
6fa5a56c
FB
177{
178 av_free(pkt->data);
179 pkt->data = NULL; pkt->size = 0;
180}
181
659596f0
RP
182void av_init_packet(AVPacket *pkt)
183{
184 pkt->pts = AV_NOPTS_VALUE;
185 pkt->dts = AV_NOPTS_VALUE;
186 pkt->pos = -1;
187 pkt->duration = 0;
188 pkt->flags = 0;
189 pkt->stream_index = 0;
190 pkt->destruct= av_destruct_packet_nofree;
191}
192
de6d9b64
FB
193int av_new_packet(AVPacket *pkt, int size)
194{
55bdd34d 195 uint8_t *data;
568e18b1 196 if((unsigned)size > (unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE)
769e10f0 197 return AVERROR(ENOMEM);
568e18b1 198 data = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
6fa5a56c 199 if (!data)
769e10f0 200 return AVERROR(ENOMEM);
6fa5a56c 201 memset(data + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
8cd5be98 202
6fa5a56c 203 av_init_packet(pkt);
115329f1 204 pkt->data = data;
6fa5a56c
FB
205 pkt->size = size;
206 pkt->destruct = av_destruct_packet;
de6d9b64
FB
207 return 0;
208}
209
2692067a
MN
210int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size)
211{
212 int ret= av_new_packet(pkt, size);
213
214 if(ret<0)
215 return ret;
216
217 pkt->pos= url_ftell(s);
218
219 ret= get_buffer(s, pkt->data, size);
220 if(ret<=0)
221 av_free_packet(pkt);
222 else
223 pkt->size= ret;
224
225 return ret;
226}
227
fb2758c8
FB
228int av_dup_packet(AVPacket *pkt)
229{
230 if (pkt->destruct != av_destruct_packet) {
231 uint8_t *data;
8a56ac7b
FB
232 /* we duplicate the packet and don't forget to put the padding
233 again */
568e18b1 234 if((unsigned)pkt->size > (unsigned)pkt->size + FF_INPUT_BUFFER_PADDING_SIZE)
769e10f0 235 return AVERROR(ENOMEM);
8a56ac7b 236 data = av_malloc(pkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
fb2758c8 237 if (!data) {
769e10f0 238 return AVERROR(ENOMEM);
fb2758c8
FB
239 }
240 memcpy(data, pkt->data, pkt->size);
8a56ac7b 241 memset(data + pkt->size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
fb2758c8
FB
242 pkt->data = data;
243 pkt->destruct = av_destruct_packet;
244 }
245 return 0;
246}
247
5c07cf53 248int av_filename_number_test(const char *filename)
b9a281db
FB
249{
250 char buf[1024];
5c07cf53 251 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
b9a281db
FB
252}
253
79750486 254static AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
b9a281db
FB
255{
256 AVInputFormat *fmt1, *fmt;
79750486 257 int score;
b9a281db
FB
258
259 fmt = NULL;
b9a281db 260 for(fmt1 = first_iformat; fmt1 != NULL; fmt1 = fmt1->next) {
b8e705ec 261 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
b9a281db
FB
262 continue;
263 score = 0;
a8dbe951
PG
264 if (fmt1->read_probe) {
265 score = fmt1->read_probe(pd);
266 } else if (fmt1->extensions) {
b9a281db
FB
267 if (match_ext(pd->filename, fmt1->extensions)) {
268 score = 50;
269 }
115329f1 270 }
79750486
MN
271 if (score > *score_max) {
272 *score_max = score;
b9a281db
FB
273 fmt = fmt1;
274 }
275 }
276 return fmt;
277}
278
79750486
MN
279AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
280 int score=0;
281 return av_probe_input_format2(pd, is_opened, &score);
282}
283
b9a281db
FB
284/************************************************************/
285/* input media file */
96baaa6a 286
da24c5e3 287/**
e36bdf8b 288 * Open a media file from an IO stream. 'fmt' must be specified.
da24c5e3 289 */
43465395 290static const char* format_to_name(void* ptr)
bc874dae 291{
43465395 292 AVFormatContext* fc = (AVFormatContext*) ptr;
bc874dae
MB
293 if(fc->iformat) return fc->iformat->name;
294 else if(fc->oformat) return fc->oformat->name;
295 else return "NULL";
296}
297
66acccf0 298#define OFFSET(x) offsetof(AVFormatContext,x)
755bfeab 299#define DEFAULT 0 //should be NAN but it does not work as it is not a constant in glibc as required by ANSI/ISO C
4eb72c6b
NS
300//these names are too long to be readable
301#define E AV_OPT_FLAG_ENCODING_PARAM
302#define D AV_OPT_FLAG_DECODING_PARAM
303
304static const AVOption options[]={
8c3dd5dc 305{"probesize", NULL, OFFSET(probesize), FF_OPT_TYPE_INT, 32000, 32, INT_MAX, D}, /* 32000 from mpegts.c: 1.0 second at 24Mbit/s */
09a45576 306{"muxrate", "set mux rate", OFFSET(mux_rate), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, E},
4ff8fcef 307{"packetsize", "set packet size", OFFSET(packet_size), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, E},
18de0b81 308{"fflags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, D|E, "fflags"},
2c00106c
MN
309{"ignidx", "ignore index", 0, FF_OPT_TYPE_CONST, AVFMT_FLAG_IGNIDX, INT_MIN, INT_MAX, D, "fflags"},
310{"genpts", "generate pts", 0, FF_OPT_TYPE_CONST, AVFMT_FLAG_GENPTS, INT_MIN, INT_MAX, D, "fflags"},
8c3dd5dc 311{"track", " set the track number", OFFSET(track), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, E},
ec1b10f4 312{"year", "set the year", OFFSET(year), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, E},
e19fbbec 313{"analyzeduration", "how many microseconds are analyzed to estimate duration", OFFSET(max_analyze_duration), FF_OPT_TYPE_INT, 3*AV_TIME_BASE, 0, INT_MAX, D},
4eb72c6b
NS
314{NULL},
315};
316
5e89b50b
PI
317#undef E
318#undef D
319#undef DEFAULT
320
4eb72c6b
NS
321static const AVClass av_format_context_class = { "AVFormatContext", format_to_name, options };
322
702dfe01
BC
323static void avformat_get_context_defaults(AVFormatContext *s)
324{
4eb72c6b 325 memset(s, 0, sizeof(AVFormatContext));
9e6c9470 326
73a8ceaa
PI
327 s->av_class = &av_format_context_class;
328
329 av_opt_set_defaults(s);
4eb72c6b 330}
bc874dae
MB
331
332AVFormatContext *av_alloc_format_context(void)
333{
334 AVFormatContext *ic;
5894991f 335 ic = av_malloc(sizeof(AVFormatContext));
bc874dae 336 if (!ic) return ic;
4eb72c6b 337 avformat_get_context_defaults(ic);
43465395 338 ic->av_class = &av_format_context_class;
bc874dae
MB
339 return ic;
340}
341
115329f1
DB
342int av_open_input_stream(AVFormatContext **ic_ptr,
343 ByteIOContext *pb, const char *filename,
da24c5e3
FB
344 AVInputFormat *fmt, AVFormatParameters *ap)
345{
346 int err;
347 AVFormatContext *ic;
c04c3282
MN
348 AVFormatParameters default_ap;
349
350 if(!ap){
351 ap=&default_ap;
352 memset(ap, 0, sizeof(default_ap));
353 }
da24c5e3 354
4eb72c6b
NS
355 if(!ap->prealloced_context)
356 ic = av_alloc_format_context();
357 else
358 ic = *ic_ptr;
da24c5e3 359 if (!ic) {
769e10f0 360 err = AVERROR(ENOMEM);
da24c5e3
FB
361 goto fail;
362 }
363 ic->iformat = fmt;
364 if (pb)
365 ic->pb = *pb;
366 ic->duration = AV_NOPTS_VALUE;
367 ic->start_time = AV_NOPTS_VALUE;
75e61b0e 368 av_strlcpy(ic->filename, filename, sizeof(ic->filename));
da24c5e3
FB
369
370 /* allocate private data */
371 if (fmt->priv_data_size > 0) {
372 ic->priv_data = av_mallocz(fmt->priv_data_size);
373 if (!ic->priv_data) {
769e10f0 374 err = AVERROR(ENOMEM);
da24c5e3
FB
375 goto fail;
376 }
377 } else {
378 ic->priv_data = NULL;
379 }
380
da24c5e3
FB
381 err = ic->iformat->read_header(ic, ap);
382 if (err < 0)
383 goto fail;
fb2758c8 384
faf7cbf1 385 if (pb && !ic->data_offset)
fb2758c8
FB
386 ic->data_offset = url_ftell(&ic->pb);
387
da24c5e3
FB
388 *ic_ptr = ic;
389 return 0;
390 fail:
391 if (ic) {
392 av_freep(&ic->priv_data);
393 }
394 av_free(ic);
395 *ic_ptr = NULL;
396 return err;
397}
398
e36bdf8b 399/** Size of probe buffer, for guessing file type from file contents. */
a877eedc 400#define PROBE_BUF_MIN 2048
329b1e75 401#define PROBE_BUF_MAX (1<<20)
b9a281db 402
115329f1 403int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
b9a281db
FB
404 AVInputFormat *fmt,
405 int buf_size,
406 AVFormatParameters *ap)
de6d9b64 407{
a877eedc 408 int err, must_open_file, file_opened, probe_size;
b9a281db 409 AVProbeData probe_data, *pd = &probe_data;
da24c5e3 410 ByteIOContext pb1, *pb = &pb1;
115329f1 411
da24c5e3
FB
412 file_opened = 0;
413 pd->filename = "";
414 if (filename)
415 pd->filename = filename;
a877eedc 416 pd->buf = NULL;
b9a281db
FB
417 pd->buf_size = 0;
418
419 if (!fmt) {
420 /* guess format if no file can be opened */
a25e098d 421 fmt = av_probe_input_format(pd, 0);
de6d9b64 422 }
de6d9b64 423
b6892136
FB
424 /* do not open file if the format does not need it. XXX: specific
425 hack needed to handle RTSP/TCP */
426 must_open_file = 1;
da24c5e3 427 if (fmt && (fmt->flags & AVFMT_NOFILE)) {
b6892136 428 must_open_file = 0;
90b5b51e 429 pb= NULL; //FIXME this or memset(pb, 0, sizeof(ByteIOContext)); otherwise it is uninitialized
b6892136
FB
430 }
431
432 if (!fmt || must_open_file) {
87a0a681 433 /* if no file needed do not try to open one */
0ba0c8de 434 if ((err=url_fopen(pb, filename, URL_RDONLY)) < 0) {
96baaa6a 435 goto fail;
b9a281db 436 }
da24c5e3 437 file_opened = 1;
96baaa6a 438 if (buf_size > 0) {
da24c5e3 439 url_setbufsize(pb, buf_size);
96baaa6a 440 }
a877eedc
MN
441
442 for(probe_size= PROBE_BUF_MIN; probe_size<=PROBE_BUF_MAX && !fmt; probe_size<<=1){
79750486 443 int score= probe_size < PROBE_BUF_MAX ? AVPROBE_SCORE_MAX/4 : 0;
5b25dfa7 444 /* read probe data */
87e87886 445 pd->buf= av_realloc(pd->buf, probe_size + AVPROBE_PADDING_SIZE);
a877eedc 446 pd->buf_size = get_buffer(pb, pd->buf, probe_size);
9be51815 447 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
497244a8 448 if (url_fseek(pb, 0, SEEK_SET) < 0) {
53e2f9ca
MN
449 url_fclose(pb);
450 if (url_fopen(pb, filename, URL_RDONLY) < 0) {
5e43b17e 451 file_opened = 0;
6f3e0b21 452 err = AVERROR(EIO);
53e2f9ca
MN
453 goto fail;
454 }
455 }
a877eedc 456 /* guess file format */
79750486 457 fmt = av_probe_input_format2(pd, 1, &score);
5b25dfa7 458 }
a877eedc 459 av_freep(&pd->buf);
b9a281db
FB
460 }
461
462 /* if still no format found, error */
463 if (!fmt) {
464 err = AVERROR_NOFMT;
da24c5e3 465 goto fail;
de6d9b64 466 }
115329f1 467
67d06418 468 /* XXX: suppress this hack for redirectors */
e7047005 469#ifdef CONFIG_REDIR_DEMUXER
6369638b 470 if (!strcmp(fmt->name, "redir")) {
7241a6bb 471 int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
da24c5e3
FB
472 err = redir_open(ic_ptr, pb);
473 url_fclose(pb);
67d06418
FB
474 return err;
475 }
9b2e001f 476#endif
67d06418 477
87a0a681 478 /* check filename in case of an image number is expected */
da24c5e3 479 if (fmt->flags & AVFMT_NEEDNUMBER) {
5c07cf53 480 if (!av_filename_number_test(filename)) {
87a0a681 481 err = AVERROR_NUMEXPECTED;
da24c5e3 482 goto fail;
87a0a681
FB
483 }
484 }
da24c5e3
FB
485 err = av_open_input_stream(ic_ptr, pb, filename, fmt, ap);
486 if (err)
487 goto fail;
b9a281db 488 return 0;
de6d9b64 489 fail:
a877eedc 490 av_freep(&pd->buf);
da24c5e3
FB
491 if (file_opened)
492 url_fclose(pb);
b9a281db
FB
493 *ic_ptr = NULL;
494 return err;
115329f1 495
de6d9b64
FB
496}
497
da24c5e3
FB
498/*******************************************************/
499
de6d9b64
FB
500int av_read_packet(AVFormatContext *s, AVPacket *pkt)
501{
b237eb80 502 av_init_packet(pkt);
fb2758c8
FB
503 return s->iformat->read_packet(s, pkt);
504}
505
506/**********************************************************/
507
e36bdf8b
DK
508/**
509 * Get the number of samples of an audio frame. Return (-1) if error.
510 */
fb2758c8
FB
511static int get_audio_frame_size(AVCodecContext *enc, int size)
512{
513 int frame_size;
514
515 if (enc->frame_size <= 1) {
ac3e1834
BC
516 int bits_per_sample = av_get_bits_per_sample(enc->codec_id);
517
518 if (bits_per_sample) {
fb2758c8
FB
519 if (enc->channels == 0)
520 return -1;
f1b163e0 521 frame_size = (size << 3) / (bits_per_sample * enc->channels);
ac3e1834 522 } else {
fb2758c8
FB
523 /* used for example by ADPCM codecs */
524 if (enc->bit_rate == 0)
525 return -1;
526 frame_size = (size * 8 * enc->sample_rate) / enc->bit_rate;
fb2758c8
FB
527 }
528 } else {
529 frame_size = enc->frame_size;
530 }
531 return frame_size;
532}
533
534
e36bdf8b
DK
535/**
536 * Return the frame duration in seconds, return 0 if not available.
537 */
115329f1 538static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
fb2758c8
FB
539 AVCodecParserContext *pc, AVPacket *pkt)
540{
541 int frame_size;
542
543 *pnum = 0;
544 *pden = 0;
01f4895c 545 switch(st->codec->codec_type) {
fb2758c8 546 case CODEC_TYPE_VIDEO:
1677155d 547 if(st->time_base.num*1000LL > st->time_base.den){
c0df9d75
MN
548 *pnum = st->time_base.num;
549 *pden = st->time_base.den;
01f4895c
MN
550 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
551 *pnum = st->codec->time_base.num;
552 *pden = st->codec->time_base.den;
327c4076
MN
553 if (pc && pc->repeat_pict) {
554 *pden *= 2;
555 *pnum = (*pnum) * (2 + pc->repeat_pict);
556 }
fb2758c8
FB
557 }
558 break;
559 case CODEC_TYPE_AUDIO:
01f4895c 560 frame_size = get_audio_frame_size(st->codec, pkt->size);
fb2758c8
FB
561 if (frame_size < 0)
562 break;
563 *pnum = frame_size;
01f4895c 564 *pden = st->codec->sample_rate;
fb2758c8
FB
565 break;
566 default:
567 break;
568 }
569}
570
5ba7c3d7
MN
571static int is_intra_only(AVCodecContext *enc){
572 if(enc->codec_type == CODEC_TYPE_AUDIO){
573 return 1;
574 }else if(enc->codec_type == CODEC_TYPE_VIDEO){
575 switch(enc->codec_id){
576 case CODEC_ID_MJPEG:
577 case CODEC_ID_MJPEGB:
578 case CODEC_ID_LJPEG:
579 case CODEC_ID_RAWVIDEO:
580 case CODEC_ID_DVVIDEO:
581 case CODEC_ID_HUFFYUV:
f37b9768 582 case CODEC_ID_FFVHUFF:
5ba7c3d7
MN
583 case CODEC_ID_ASV1:
584 case CODEC_ID_ASV2:
585 case CODEC_ID_VCR1:
586 return 1;
587 default: break;
588 }
589 }
590 return 0;
591}
592
9fcbcca6
NB
593static void update_initial_timestamps(AVFormatContext *s, int stream_index,
594 int64_t dts, int64_t pts)
595{
82583548
MN
596 AVStream *st= s->streams[stream_index];
597 AVPacketList *pktl= s->packet_buffer;
598
599 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE)
600 return;
601
602 st->first_dts= dts - st->cur_dts;
603 st->cur_dts= dts;
604
605 for(; pktl; pktl= pktl->next){
606 if(pktl->pkt.stream_index != stream_index)
607 continue;
608 //FIXME think more about this check
609 if(pktl->pkt.pts != AV_NOPTS_VALUE && pktl->pkt.pts == pktl->pkt.dts)
610 pktl->pkt.pts += st->first_dts;
611
612 if(pktl->pkt.dts != AV_NOPTS_VALUE)
613 pktl->pkt.dts += st->first_dts;
48a59dfe
MN
614
615 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
616 st->start_time= pktl->pkt.pts;
82583548 617 }
9fcbcca6
NB
618 if (st->start_time == AV_NOPTS_VALUE)
619 st->start_time = pts;
82583548
MN
620}
621
115329f1 622static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
fb2758c8
FB
623 AVCodecParserContext *pc, AVPacket *pkt)
624{
d9e1efb7 625 int num, den, presentation_delayed, delay, i;
a74008a4 626 int64_t offset;
115329f1 627
10a7571b
MN
628 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && pkt->dts > pkt->pts && st->pts_wrap_bits<63
629 /*&& pkt->dts-(1LL<<st->pts_wrap_bits) < pkt->pts*/){
630 pkt->dts -= 1LL<<st->pts_wrap_bits;
631 }
632
fb2758c8 633 if (pkt->duration == 0) {
3c895fc0 634 compute_frame_duration(&num, &den, st, pc, pkt);
fb2758c8 635 if (den && num) {
77405fc8 636 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num);
fb2758c8
FB
637 }
638 }
639
a74008a4
JP
640 /* correct timestamps with byte offset if demuxers only have timestamps on packet boundaries */
641 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
642 /* this will estimate bitrate based on this frame's duration and size */
643 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
644 if(pkt->pts != AV_NOPTS_VALUE)
645 pkt->pts += offset;
646 if(pkt->dts != AV_NOPTS_VALUE)
647 pkt->dts += offset;
648 }
649
01f4895c 650 if(is_intra_only(st->codec))
5ba7c3d7
MN
651 pkt->flags |= PKT_FLAG_KEY;
652
fb2758c8 653 /* do we have a video B frame ? */
befe3b05 654 delay= st->codec->has_b_frames;
fb2758c8 655 presentation_delayed = 0;
7e4baa66
MN
656 /* XXX: need has_b_frame, but cannot get it if the codec is
657 not initialized */
658 if (delay &&
659 pc && pc->pict_type != FF_B_TYPE)
660 presentation_delayed = 1;
755bfeab 661 /* This may be redundant, but it should not hurt. */
7e4baa66
MN
662 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
663 presentation_delayed = 1;
115329f1 664
e928649b 665 if(st->cur_dts == AV_NOPTS_VALUE){
82583548 666 st->cur_dts = 0; //FIXME maybe set it to 0 during init
e928649b 667 }
fb2758c8 668
949b1a13 669// av_log(NULL, AV_LOG_DEBUG, "IN delayed:%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64" st:%d pc:%p\n", presentation_delayed, pkt->pts, pkt->dts, st->cur_dts, pkt->stream_index, pc);
fb2758c8 670 /* interpolate PTS and DTS if they are not present */
7e4baa66
MN
671 if(delay <=1){
672 if (presentation_delayed) {
673 /* DTS = decompression time stamp */
674 /* PTS = presentation time stamp */
675 if (pkt->dts == AV_NOPTS_VALUE)
676 pkt->dts = st->last_IP_pts;
9fcbcca6 677 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
7e4baa66
MN
678 if (pkt->dts == AV_NOPTS_VALUE)
679 pkt->dts = st->cur_dts;
680
681 /* this is tricky: the dts must be incremented by the duration
682 of the frame we are displaying, i.e. the last I or P frame */
683 if (st->last_IP_duration == 0)
684 st->last_IP_duration = pkt->duration;
685 st->cur_dts = pkt->dts + st->last_IP_duration;
686 st->last_IP_duration = pkt->duration;
687 st->last_IP_pts= pkt->pts;
688 /* cannot compute PTS if not present (we can compute it only
689 by knowing the futur */
028d6f3e 690 } else if(pkt->pts != AV_NOPTS_VALUE || pkt->dts != AV_NOPTS_VALUE || pkt->duration){
7e4baa66
MN
691 if(pkt->pts != AV_NOPTS_VALUE && pkt->duration){
692 int64_t old_diff= FFABS(st->cur_dts - pkt->duration - pkt->pts);
693 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
694 if(old_diff < new_diff && old_diff < (pkt->duration>>3)){
695 pkt->pts += pkt->duration;
696 // av_log(NULL, AV_LOG_DEBUG, "id:%d old:%"PRId64" new:%"PRId64" dur:%d cur:%"PRId64" size:%d\n", pkt->stream_index, old_diff, new_diff, pkt->duration, st->cur_dts, pkt->size);
697 }
90bb394d 698 }
115329f1 699
7e4baa66
MN
700 /* presentation is not delayed : PTS and DTS are the same */
701 if(pkt->pts == AV_NOPTS_VALUE)
702 pkt->pts = pkt->dts;
9fcbcca6 703 update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
7e4baa66
MN
704 if(pkt->pts == AV_NOPTS_VALUE)
705 pkt->pts = st->cur_dts;
706 pkt->dts = pkt->pts;
707 st->cur_dts = pkt->pts + pkt->duration;
708 }
fb2758c8 709 }
d9e1efb7
MN
710
711 if(pkt->pts != AV_NOPTS_VALUE){
712 st->pts_buffer[0]= pkt->pts;
713 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
714 st->pts_buffer[i]= (i-delay-1) * pkt->duration;
715 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
716 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
717 if(pkt->dts == AV_NOPTS_VALUE)
718 pkt->dts= st->pts_buffer[0];
82583548 719 if(delay>1){
9fcbcca6 720 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
82583548 721 }
d9e1efb7
MN
722 if(pkt->dts > st->cur_dts)
723 st->cur_dts = pkt->dts;
724 }
725
726// av_log(NULL, AV_LOG_ERROR, "OUTdelayed:%d/%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64"\n", presentation_delayed, delay, pkt->pts, pkt->dts, st->cur_dts);
115329f1 727
fb2758c8
FB
728 /* update flags */
729 if (pc) {
730 pkt->flags = 0;
731 /* key frame computation */
fb2758c8
FB
732 if (pc->pict_type == FF_I_TYPE)
733 pkt->flags |= PKT_FLAG_KEY;
fb2758c8 734 }
fb2758c8
FB
735}
736
63dd1377 737void av_destruct_packet_nofree(AVPacket *pkt)
fb2758c8
FB
738{
739 pkt->data = NULL; pkt->size = 0;
740}
741
742static int av_read_frame_internal(AVFormatContext *s, AVPacket *pkt)
743{
744 AVStream *st;
37353960 745 int len, ret, i;
fb2758c8 746
b237eb80
MN
747 av_init_packet(pkt);
748
fb2758c8
FB
749 for(;;) {
750 /* select current input stream component */
751 st = s->cur_st;
752 if (st) {
90ad92b3 753 if (!st->need_parsing || !st->parser) {
fb2758c8
FB
754 /* no parsing needed: we just output the packet as is */
755 /* raw data support */
756 *pkt = s->cur_pkt;
757 compute_pkt_fields(s, st, NULL, pkt);
758 s->cur_st = NULL;
434cab9e 759 break;
f3356e9c 760 } else if (s->cur_len > 0 && st->discard < AVDISCARD_ALL) {
115329f1 761 len = av_parser_parse(st->parser, st->codec, &pkt->data, &pkt->size,
6ec87caa
FB
762 s->cur_ptr, s->cur_len,
763 s->cur_pkt.pts, s->cur_pkt.dts);
764 s->cur_pkt.pts = AV_NOPTS_VALUE;
765 s->cur_pkt.dts = AV_NOPTS_VALUE;
fb2758c8
FB
766 /* increment read pointer */
767 s->cur_ptr += len;
768 s->cur_len -= len;
115329f1 769
fb2758c8
FB
770 /* return packet if any */
771 if (pkt->size) {
37353960 772 got_packet:
711737af 773 pkt->pos = s->cur_pkt.pos; // Isn't quite accurate but close.
fb2758c8
FB
774 pkt->duration = 0;
775 pkt->stream_index = st->index;
6ec87caa
FB
776 pkt->pts = st->parser->pts;
777 pkt->dts = st->parser->dts;
fb2758c8
FB
778 pkt->destruct = av_destruct_packet_nofree;
779 compute_pkt_fields(s, st, st->parser, pkt);
e9b78eeb
MN
780
781 if((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & PKT_FLAG_KEY){
782 av_add_index_entry(st, st->parser->frame_offset, pkt->dts,
783 0, 0, AVINDEX_KEYFRAME);
784 }
785
434cab9e 786 break;
fb2758c8
FB
787 }
788 } else {
bcbecff1 789 /* free packet */
115329f1 790 av_free_packet(&s->cur_pkt);
fb2758c8
FB
791 s->cur_st = NULL;
792 }
793 } else {
fb2758c8
FB
794 /* read next packet */
795 ret = av_read_packet(s, &s->cur_pkt);
37353960 796 if (ret < 0) {
8fa36ae0 797 if (ret == AVERROR(EAGAIN))
37353960
FB
798 return ret;
799 /* return the last frames, if any */
800 for(i = 0; i < s->nb_streams; i++) {
801 st = s->streams[i];
90ad92b3 802 if (st->parser && st->need_parsing) {
115329f1
DB
803 av_parser_parse(st->parser, st->codec,
804 &pkt->data, &pkt->size,
805 NULL, 0,
6ec87caa 806 AV_NOPTS_VALUE, AV_NOPTS_VALUE);
37353960
FB
807 if (pkt->size)
808 goto got_packet;
809 }
810 }
811 /* no more packets: really terminates parsing */
fb2758c8 812 return ret;
37353960 813 }
115329f1 814
9ee91c2f 815 st = s->streams[s->cur_pkt.stream_index];
434cab9e 816 if(st->codec->debug & FF_DEBUG_PTS)
ccd3228e 817 av_log(s, AV_LOG_DEBUG, "av_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
434cab9e
MN
818 s->cur_pkt.stream_index,
819 s->cur_pkt.pts,
820 s->cur_pkt.dts,
821 s->cur_pkt.size);
fb2758c8 822
fb2758c8
FB
823 s->cur_st = st;
824 s->cur_ptr = s->cur_pkt.data;
825 s->cur_len = s->cur_pkt.size;
826 if (st->need_parsing && !st->parser) {
01f4895c 827 st->parser = av_parser_init(st->codec->codec_id);
fb2758c8
FB
828 if (!st->parser) {
829 /* no parser available : just output the raw packets */
57004ff1
AJ
830 st->need_parsing = AVSTREAM_PARSE_NONE;
831 }else if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
7cbaa7ba 832 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
fb2758c8 833 }
e9b78eeb
MN
834 if(st->parser && (s->iformat->flags & AVFMT_GENERIC_INDEX)){
835 st->parser->last_frame_offset=
836 st->parser->cur_offset= s->cur_pkt.pos;
837 }
fb2758c8
FB
838 }
839 }
840 }
434cab9e 841 if(st->codec->debug & FF_DEBUG_PTS)
ccd3228e 842 av_log(s, AV_LOG_DEBUG, "av_read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
434cab9e
MN
843 pkt->stream_index,
844 pkt->pts,
845 pkt->dts,
846 pkt->size);
847
848 return 0;
fb2758c8
FB
849}
850
02b15cc8
MN
851static AVPacket *add_to_pktbuf(AVFormatContext *s, AVPacket *pkt){
852 AVPacketList *pktl= s->packet_buffer;
853 AVPacketList **plast_pktl= &s->packet_buffer;
854
855 while(*plast_pktl) plast_pktl= &(*plast_pktl)->next; //FIXME maybe maintain pointer to the last?
856
857 pktl = av_mallocz(sizeof(AVPacketList));
858 if (!pktl)
859 return NULL;
860
861 /* add the packet in the buffered packet list */
862 *plast_pktl = pktl;
863 pktl->pkt= *pkt;
864 return &pktl->pkt;
865}
866
fb2758c8
FB
867int av_read_frame(AVFormatContext *s, AVPacket *pkt)
868{
de6d9b64 869 AVPacketList *pktl;
30bc6613
MN
870 int eof=0;
871 const int genpts= s->flags & AVFMT_FLAG_GENPTS;
872
873 for(;;){
874 pktl = s->packet_buffer;
875 if (pktl) {
876 AVPacket *next_pkt= &pktl->pkt;
30bc6613
MN
877
878 if(genpts && next_pkt->dts != AV_NOPTS_VALUE){
879 while(pktl && next_pkt->pts == AV_NOPTS_VALUE){
115329f1 880 if( pktl->pkt.stream_index == next_pkt->stream_index
30bc6613
MN
881 && next_pkt->dts < pktl->pkt.dts
882 && pktl->pkt.pts != pktl->pkt.dts //not b frame
883 /*&& pktl->pkt.dts != AV_NOPTS_VALUE*/){
884 next_pkt->pts= pktl->pkt.dts;
885 }
886 pktl= pktl->next;
887 }
888 pktl = s->packet_buffer;
889 }
115329f1
DB
890
891 if( next_pkt->pts != AV_NOPTS_VALUE
892 || next_pkt->dts == AV_NOPTS_VALUE
30bc6613
MN
893 || !genpts || eof){
894 /* read packet from packet buffer, if there is data */
895 *pkt = *next_pkt;
896 s->packet_buffer = pktl->next;
897 av_free(pktl);
898 return 0;
899 }
900 }
901 if(genpts){
30bc6613
MN
902 int ret= av_read_frame_internal(s, pkt);
903 if(ret<0){
8fa36ae0 904 if(pktl && ret != AVERROR(EAGAIN)){
30bc6613
MN
905 eof=1;
906 continue;
907 }else
908 return ret;
909 }
115329f1 910
02b15cc8 911 if(av_dup_packet(add_to_pktbuf(s, pkt)) < 0)
769e10f0 912 return AVERROR(ENOMEM);
30bc6613
MN
913 }else{
914 assert(!s->packet_buffer);
915 return av_read_frame_internal(s, pkt);
916 }
fb2758c8
FB
917 }
918}
919
920/* XXX: suppress the packet queue */
921static void flush_packet_queue(AVFormatContext *s)
922{
923 AVPacketList *pktl;
924
925 for(;;) {
926 pktl = s->packet_buffer;
115329f1 927 if (!pktl)
fb2758c8
FB
928 break;
929 s->packet_buffer = pktl->next;
930 av_free_packet(&pktl->pkt);
931 av_free(pktl);
b9a281db
FB
932 }
933}
934
da24c5e3 935/*******************************************************/
fb2758c8
FB
936/* seek support */
937
b754978a
MN
938int av_find_default_stream_index(AVFormatContext *s)
939{
940 int i;
941 AVStream *st;
942
943 if (s->nb_streams <= 0)
944 return -1;
945 for(i = 0; i < s->nb_streams; i++) {
946 st = s->streams[i];
01f4895c 947 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
b754978a
MN
948 return i;
949 }
950 }
951 return 0;
952}
953
e36bdf8b
DK
954/**
955 * Flush the frame reader.
956 */
fb2758c8
FB
957static void av_read_frame_flush(AVFormatContext *s)
958{
959 AVStream *st;
960 int i;
961
962 flush_packet_queue(s);
963
964 /* free previous packet */
965 if (s->cur_st) {
966 if (s->cur_st->parser)
967 av_free_packet(&s->cur_pkt);
968 s->cur_st = NULL;
969 }
970 /* fail safe */
971 s->cur_ptr = NULL;
972 s->cur_len = 0;
115329f1 973
fb2758c8
FB
974 /* for each stream, reset read state */
975 for(i = 0; i < s->nb_streams; i++) {
976 st = s->streams[i];
115329f1 977
fb2758c8
FB
978 if (st->parser) {
979 av_parser_close(st->parser);
980 st->parser = NULL;
981 }
77405fc8 982 st->last_IP_pts = AV_NOPTS_VALUE;
a843d1ff 983 st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
fb2758c8
FB
984 }
985}
986
22ffac70 987void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp){
8bcb147f
MN
988 int i;
989
990 for(i = 0; i < s->nb_streams; i++) {
1a1dc611 991 AVStream *st = s->streams[i];
8bcb147f 992
115329f1 993 st->cur_dts = av_rescale(timestamp,
1a1dc611
NK
994 st->time_base.den * (int64_t)ref_st->time_base.num,
995 st->time_base.num * (int64_t)ref_st->time_base.den);
8bcb147f
MN
996 }
997}
998
3e9245a9 999int av_add_index_entry(AVStream *st,
30a43f2d 1000 int64_t pos, int64_t timestamp, int size, int distance, int flags)
fb2758c8
FB
1001{
1002 AVIndexEntry *entries, *ie;
b754978a 1003 int index;
115329f1 1004
568e18b1
MN
1005 if((unsigned)st->nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1006 return -1;
115329f1 1007
fb2758c8
FB
1008 entries = av_fast_realloc(st->index_entries,
1009 &st->index_entries_allocated_size,
115329f1 1010 (st->nb_index_entries + 1) *
fb2758c8 1011 sizeof(AVIndexEntry));
568e18b1
MN
1012 if(!entries)
1013 return -1;
1014
b754978a
MN
1015 st->index_entries= entries;
1016
27a5fe5f 1017 index= av_index_search_timestamp(st, timestamp, AVSEEK_FLAG_ANY);
b754978a 1018
3ba1438d 1019 if(index<0){
3e9245a9
MN
1020 index= st->nb_index_entries++;
1021 ie= &entries[index];
3ba1438d
MN
1022 assert(index==0 || ie[-1].timestamp < timestamp);
1023 }else{
1024 ie= &entries[index];
1025 if(ie->timestamp != timestamp){
528c2c73
MN
1026 if(ie->timestamp <= timestamp)
1027 return -1;
3ba1438d
MN
1028 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(st->nb_index_entries - index));
1029 st->nb_index_entries++;
755bfeab 1030 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
3ba1438d 1031 distance= ie->min_distance;
3e9245a9 1032 }
3ba1438d 1033
b754978a
MN
1034 ie->pos = pos;
1035 ie->timestamp = timestamp;
3e9245a9 1036 ie->min_distance= distance;
30a43f2d 1037 ie->size= size;
b754978a 1038 ie->flags = flags;
115329f1 1039
3e9245a9 1040 return index;
fb2758c8
FB
1041}
1042
dc56fc38 1043int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
27a5fe5f 1044 int flags)
fb2758c8 1045{
b754978a
MN
1046 AVIndexEntry *entries= st->index_entries;
1047 int nb_entries= st->nb_index_entries;
fb2758c8
FB
1048 int a, b, m;
1049 int64_t timestamp;
1050
3ba1438d
MN
1051 a = - 1;
1052 b = nb_entries;
b754978a 1053
3ba1438d
MN
1054 while (b - a > 1) {
1055 m = (a + b) >> 1;
fb2758c8 1056 timestamp = entries[m].timestamp;
3ba1438d
MN
1057 if(timestamp >= wanted_timestamp)
1058 b = m;
1059 if(timestamp <= wanted_timestamp)
b754978a 1060 a = m;
fb2758c8 1061 }
27a5fe5f 1062 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
115329f1 1063
27a5fe5f
MN
1064 if(!(flags & AVSEEK_FLAG_ANY)){
1065 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1066 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1067 }
1068 }
3ba1438d 1069
115329f1 1070 if(m == nb_entries)
3ba1438d
MN
1071 return -1;
1072 return m;
fb2758c8
FB
1073}
1074
c7be2585 1075//#define DEBUG_SEEK
8d14a25c 1076
3ba1438d 1077int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
8d14a25c
MN
1078 AVInputFormat *avif= s->iformat;
1079 int64_t pos_min, pos_max, pos, pos_limit;
1080 int64_t ts_min, ts_max, ts;
89ddd2a9 1081 int index;
8d14a25c
MN
1082 AVStream *st;
1083
cdd5034f
MN
1084 if (stream_index < 0)
1085 return -1;
115329f1 1086
8d14a25c 1087#ifdef DEBUG_SEEK
4733abcb 1088 av_log(s, AV_LOG_DEBUG, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
8d14a25c
MN
1089#endif
1090
1091 ts_max=
1092 ts_min= AV_NOPTS_VALUE;
90b5b51e 1093 pos_limit= -1; //gcc falsely says it may be uninitialized
8d14a25c
MN
1094
1095 st= s->streams[stream_index];
1096 if(st->index_entries){
1097 AVIndexEntry *e;
1098
27a5fe5f 1099 index= av_index_search_timestamp(st, target_ts, flags | AVSEEK_FLAG_BACKWARD); //FIXME whole func must be checked for non keyframe entries in index case, especially read_timestamp()
3ba1438d 1100 index= FFMAX(index, 0);
8d14a25c
MN
1101 e= &st->index_entries[index];
1102
1103 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1104 pos_min= e->pos;
1105 ts_min= e->timestamp;
1106#ifdef DEBUG_SEEK
115329f1 1107 av_log(s, AV_LOG_DEBUG, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
8d14a25c
MN
1108 pos_min,ts_min);
1109#endif
1110 }else{
1111 assert(index==0);
1112 }
115329f1
DB
1113
1114 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
27a5fe5f
MN
1115 assert(index < st->nb_index_entries);
1116 if(index >= 0){
8d14a25c
MN
1117 e= &st->index_entries[index];
1118 assert(e->timestamp >= target_ts);
1119 pos_max= e->pos;
1120 ts_max= e->timestamp;
1121 pos_limit= pos_max - e->min_distance;
1122#ifdef DEBUG_SEEK
115329f1 1123 av_log(s, AV_LOG_DEBUG, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
8d14a25c
MN
1124 pos_max,pos_limit, ts_max);
1125#endif
1126 }
1127 }
1128
89ddd2a9
MN
1129 pos= av_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1130 if(pos<0)
1131 return -1;
1132
1133 /* do the seek */
1134 url_fseek(&s->pb, pos, SEEK_SET);
1135
1136 av_update_cur_dts(s, st, ts);
1137
1138 return 0;
1139}
1140
89ddd2a9
MN
1141int64_t av_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts, int64_t pos_min, int64_t pos_max, int64_t pos_limit, int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret, int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t )){
1142 int64_t pos, ts;
1143 int64_t start_pos, filesize;
1144 int no_change;
1145
1146#ifdef DEBUG_SEEK
1147 av_log(s, AV_LOG_DEBUG, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
1148#endif
1149
8d14a25c
MN
1150 if(ts_min == AV_NOPTS_VALUE){
1151 pos_min = s->data_offset;
89ddd2a9 1152 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
8d14a25c
MN
1153 if (ts_min == AV_NOPTS_VALUE)
1154 return -1;
1155 }
1156
1157 if(ts_max == AV_NOPTS_VALUE){
1158 int step= 1024;
6fd93ce2
KA
1159 filesize = url_fsize(&s->pb);
1160 pos_max = filesize - 1;
8d14a25c
MN
1161 do{
1162 pos_max -= step;
89ddd2a9 1163 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
8d14a25c
MN
1164 step += step;
1165 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1166 if (ts_max == AV_NOPTS_VALUE)
1167 return -1;
115329f1 1168
8d14a25c
MN
1169 for(;;){
1170 int64_t tmp_pos= pos_max + 1;
89ddd2a9 1171 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
8d14a25c
MN
1172 if(tmp_ts == AV_NOPTS_VALUE)
1173 break;
1174 ts_max= tmp_ts;
1175 pos_max= tmp_pos;
6fd93ce2
KA
1176 if(tmp_pos >= filesize)
1177 break;
8d14a25c
MN
1178 }
1179 pos_limit= pos_max;
1180 }
1181
53f7c43f
MN
1182 if(ts_min > ts_max){
1183 return -1;
1184 }else if(ts_min == ts_max){
1185 pos_limit= pos_min;
1186 }
1187
8d14a25c
MN
1188 no_change=0;
1189 while (pos_min < pos_limit) {
1190#ifdef DEBUG_SEEK
115329f1 1191 av_log(s, AV_LOG_DEBUG, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
8d14a25c
MN
1192 pos_min, pos_max,
1193 ts_min, ts_max);
1194#endif
1195 assert(pos_limit <= pos_max);
1196
1197 if(no_change==0){
1198 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1199 // interpolate position (better than dichotomy)
3ba1438d
MN
1200 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1201 + pos_min - approximate_keyframe_distance;
8d14a25c
MN
1202 }else if(no_change==1){
1203 // bisection, if interpolation failed to change min or max pos last time
1204 pos = (pos_min + pos_limit)>>1;
1205 }else{
1206 // linear search if bisection failed, can only happen if there are very few or no keframes between min/max
1207 pos=pos_min;
1208 }
1209 if(pos <= pos_min)
1210 pos= pos_min + 1;
1211 else if(pos > pos_limit)
1212 pos= pos_limit;
1213 start_pos= pos;
1214
89ddd2a9 1215 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
8d14a25c
MN
1216 if(pos == pos_max)
1217 no_change++;
1218 else
1219 no_change=0;
1220#ifdef DEBUG_SEEK
4733abcb 1221av_log(s, AV_LOG_DEBUG, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n", pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts, pos_limit, start_pos, no_change);
8d14a25c 1222#endif
db2a0e22
MN
1223 if(ts == AV_NOPTS_VALUE){
1224 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1225 return -1;
1226 }
8d14a25c 1227 assert(ts != AV_NOPTS_VALUE);
3ba1438d 1228 if (target_ts <= ts) {
8d14a25c
MN
1229 pos_limit = start_pos - 1;
1230 pos_max = pos;
1231 ts_max = ts;
3ba1438d
MN
1232 }
1233 if (target_ts >= ts) {
8d14a25c
MN
1234 pos_min = pos;
1235 ts_min = ts;
8d14a25c
MN
1236 }
1237 }
115329f1 1238
3ba1438d
MN
1239 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1240 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
8d14a25c
MN
1241#ifdef DEBUG_SEEK
1242 pos_min = pos;
89ddd2a9 1243 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
8d14a25c 1244 pos_min++;
89ddd2a9 1245 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
115329f1 1246 av_log(s, AV_LOG_DEBUG, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
8d14a25c
MN
1247 pos, ts_min, target_ts, ts_max);
1248#endif
89ddd2a9
MN
1249 *ts_ret= ts;
1250 return pos;
8d14a25c
MN
1251}
1252
3ba1438d 1253static int av_seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
3ba1438d
MN
1254 int64_t pos_min, pos_max;
1255#if 0
1256 AVStream *st;
1257
1258 if (stream_index < 0)
1259 return -1;
1260
1261 st= s->streams[stream_index];
1262#endif
1263
1264 pos_min = s->data_offset;
a965c478 1265 pos_max = url_fsize(&s->pb) - 1;
3ba1438d
MN
1266
1267 if (pos < pos_min) pos= pos_min;
1268 else if(pos > pos_max) pos= pos_max;
1269
1270 url_fseek(&s->pb, pos, SEEK_SET);
1271
1272#if 0
8bcb147f 1273 av_update_cur_dts(s, st, ts);
3ba1438d
MN
1274#endif
1275 return 0;
1276}
1277
115329f1 1278static int av_seek_frame_generic(AVFormatContext *s,
3ba1438d 1279 int stream_index, int64_t timestamp, int flags)
fb2758c8 1280{
8bcb147f 1281 int index;
fb2758c8
FB
1282 AVStream *st;
1283 AVIndexEntry *ie;
1284
fb2758c8 1285 st = s->streams[stream_index];
e9b78eeb 1286
27a5fe5f 1287 index = av_index_search_timestamp(st, timestamp, flags);
e9b78eeb 1288
b5a3541d 1289 if(index < 0 || index==st->nb_index_entries-1){
e9b78eeb
MN
1290 int i;
1291 AVPacket pkt;
1292
1293 if(st->index_entries && st->nb_index_entries){
1294 ie= &st->index_entries[st->nb_index_entries-1];
1295 url_fseek(&s->pb, ie->pos, SEEK_SET);
1296 av_update_cur_dts(s, st, ie->timestamp);
1297 }else
1298 url_fseek(&s->pb, 0, SEEK_SET);
1299
1300 for(i=0;; i++) {
1301 int ret = av_read_frame(s, &pkt);
1302 if(ret<0)
1303 break;
1304 av_free_packet(&pkt);
1305 if(stream_index == pkt.stream_index){
1306 if((pkt.flags & PKT_FLAG_KEY) && pkt.dts > timestamp)
1307 break;
1308 }
1309 }
1310 index = av_index_search_timestamp(st, timestamp, flags);
1311 }
fb2758c8
FB
1312 if (index < 0)
1313 return -1;
1314
fb2758c8 1315 av_read_frame_flush(s);
e9b78eeb
MN
1316 if (s->iformat->read_seek){
1317 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1318 return 0;
1319 }
1320 ie = &st->index_entries[index];
fb2758c8 1321 url_fseek(&s->pb, ie->pos, SEEK_SET);
3ba1438d 1322
8bcb147f 1323 av_update_cur_dts(s, st, ie->timestamp);
cdd5034f 1324
fb2758c8
FB
1325 return 0;
1326}
1327
3ba1438d 1328int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
fb2758c8
FB
1329{
1330 int ret;
cdd5034f 1331 AVStream *st;
115329f1 1332
fb2758c8 1333 av_read_frame_flush(s);
115329f1 1334
3ba1438d
MN
1335 if(flags & AVSEEK_FLAG_BYTE)
1336 return av_seek_frame_byte(s, stream_index, timestamp, flags);
115329f1 1337
cdd5034f
MN
1338 if(stream_index < 0){
1339 stream_index= av_find_default_stream_index(s);
1340 if(stream_index < 0)
1341 return -1;
115329f1 1342
3ba1438d 1343 st= s->streams[stream_index];
eb497825 1344 /* timestamp for default must be expressed in AV_TIME_BASE units */
3ba1438d 1345 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
cdd5034f
MN
1346 }
1347 st= s->streams[stream_index];
1348
fb2758c8
FB
1349 /* first, we try the format specific seek */
1350 if (s->iformat->read_seek)
3ba1438d 1351 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
fb2758c8
FB
1352 else
1353 ret = -1;
1354 if (ret >= 0) {
1355 return 0;
1356 }
8d14a25c
MN
1357
1358 if(s->iformat->read_timestamp)
3ba1438d 1359 return av_seek_frame_binary(s, stream_index, timestamp, flags);
8d14a25c 1360 else
3ba1438d 1361 return av_seek_frame_generic(s, stream_index, timestamp, flags);
fb2758c8
FB
1362}
1363
1364/*******************************************************/
12f996ed 1365
e36bdf8b 1366/**
c1e8b678 1367 * Returns TRUE if the stream has accurate duration in any stream.
e36bdf8b 1368 *
c1e8b678 1369 * @return TRUE if the stream has accurate duration for at least one component.
e36bdf8b 1370 */
c1e8b678 1371static int av_has_duration(AVFormatContext *ic)
12f996ed
FB
1372{
1373 int i;
1374 AVStream *st;
1375
1376 for(i = 0;i < ic->nb_streams; i++) {
1377 st = ic->streams[i];
c1e8b678 1378 if (st->duration != AV_NOPTS_VALUE)
12f996ed
FB
1379 return 1;
1380 }
1381 return 0;
1382}
1383
e36bdf8b
DK
1384/**
1385 * Estimate the stream timings from the one of each components.
1386 *
1387 * Also computes the global bitrate if possible.
1388 */
12f996ed
FB
1389static void av_update_stream_timings(AVFormatContext *ic)
1390{
c0df9d75 1391 int64_t start_time, start_time1, end_time, end_time1;
c1e8b678 1392 int64_t duration, duration1;
12f996ed
FB
1393 int i;
1394 AVStream *st;
1395
f27a7268
MR
1396 start_time = INT64_MAX;
1397 end_time = INT64_MIN;
c1e8b678 1398 duration = INT64_MIN;
12f996ed
FB
1399 for(i = 0;i < ic->nb_streams; i++) {
1400 st = ic->streams[i];
1401 if (st->start_time != AV_NOPTS_VALUE) {
c0df9d75
MN
1402 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
1403 if (start_time1 < start_time)
1404 start_time = start_time1;
12f996ed 1405 if (st->duration != AV_NOPTS_VALUE) {
c0df9d75
MN
1406 end_time1 = start_time1
1407 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
12f996ed
FB
1408 if (end_time1 > end_time)
1409 end_time = end_time1;
1410 }
1411 }
c1e8b678
NB
1412 if (st->duration != AV_NOPTS_VALUE) {
1413 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1414 if (duration1 > duration)
1415 duration = duration1;
1416 }
12f996ed 1417 }
f27a7268 1418 if (start_time != INT64_MAX) {
12f996ed 1419 ic->start_time = start_time;
f27a7268 1420 if (end_time != INT64_MIN) {
c1e8b678
NB
1421 if (end_time - start_time > duration)
1422 duration = end_time - start_time;
1423 }
1424 }
1425 if (duration != INT64_MIN) {
1426 ic->duration = duration;
1427 if (ic->file_size > 0) {
1428 /* compute the bit rate */
1429 ic->bit_rate = (double)ic->file_size * 8.0 * AV_TIME_BASE /
1430 (double)ic->duration;
12f996ed
FB
1431 }
1432 }
12f996ed
FB
1433}
1434
1435static void fill_all_stream_timings(AVFormatContext *ic)
1436{
1437 int i;
1438 AVStream *st;
1439
1440 av_update_stream_timings(ic);
1441 for(i = 0;i < ic->nb_streams; i++) {
1442 st = ic->streams[i];
1443 if (st->start_time == AV_NOPTS_VALUE) {
c0df9d75
MN
1444 if(ic->start_time != AV_NOPTS_VALUE)
1445 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
1446 if(ic->duration != AV_NOPTS_VALUE)
1447 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
12f996ed
FB
1448 }
1449 }
1450}
1451
1452static void av_estimate_timings_from_bit_rate(AVFormatContext *ic)
1453{
1454 int64_t filesize, duration;
1455 int bit_rate, i;
1456 AVStream *st;
1457
1458 /* if bit_rate is already set, we believe it */
1459 if (ic->bit_rate == 0) {
1460 bit_rate = 0;
1461 for(i=0;i<ic->nb_streams;i++) {
1462 st = ic->streams[i];
01f4895c 1463 bit_rate += st->codec->bit_rate;
12f996ed
FB
1464 }
1465 ic->bit_rate = bit_rate;
1466 }
1467
1468 /* if duration is already set, we believe it */
115329f1
DB
1469 if (ic->duration == AV_NOPTS_VALUE &&
1470 ic->bit_rate != 0 &&
12f996ed
FB
1471 ic->file_size != 0) {
1472 filesize = ic->file_size;
1473 if (filesize > 0) {
12f996ed
FB
1474 for(i = 0; i < ic->nb_streams; i++) {
1475 st = ic->streams[i];
c0df9d75 1476 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
9f32041d 1477 if (st->duration == AV_NOPTS_VALUE)
12f996ed 1478 st->duration = duration;
12f996ed
FB
1479 }
1480 }
1481 }
1482}
1483
12f996ed
FB
1484#define DURATION_MAX_READ_SIZE 250000
1485
1486/* only usable for MPEG-PS streams */
9ecf7fad 1487static void av_estimate_timings_from_pts(AVFormatContext *ic, offset_t old_offset)
12f996ed
FB
1488{
1489 AVPacket pkt1, *pkt = &pkt1;
1490 AVStream *st;
1491 int read_size, i, ret;
bf4e3bd2 1492 int64_t end_time;
12f996ed 1493 int64_t filesize, offset, duration;
115329f1 1494
578688fa
LA
1495 /* free previous packet */
1496 if (ic->cur_st && ic->cur_st->parser)
1497 av_free_packet(&ic->cur_pkt);
1498 ic->cur_st = NULL;
1499
1500 /* flush packet queue */
1501 flush_packet_queue(ic);
1502
1503 for(i=0;i<ic->nb_streams;i++) {
1504 st = ic->streams[i];
1505 if (st->parser) {
1506 av_parser_close(st->parser);
1507 st->parser= NULL;
1508 }
1509 }
115329f1 1510
12f996ed
FB
1511 /* we read the first packets to get the first PTS (not fully
1512 accurate, but it is enough now) */
1513 url_fseek(&ic->pb, 0, SEEK_SET);
1514 read_size = 0;
1515 for(;;) {
1516 if (read_size >= DURATION_MAX_READ_SIZE)
1517 break;
1518 /* if all info is available, we can stop */
1519 for(i = 0;i < ic->nb_streams; i++) {
1520 st = ic->streams[i];
1521 if (st->start_time == AV_NOPTS_VALUE)
1522 break;
1523 }
1524 if (i == ic->nb_streams)
1525 break;
1526
1527 ret = av_read_packet(ic, pkt);
1528 if (ret != 0)
1529 break;
1530 read_size += pkt->size;
1531 st = ic->streams[pkt->stream_index];
1532 if (pkt->pts != AV_NOPTS_VALUE) {
1533 if (st->start_time == AV_NOPTS_VALUE)
c0df9d75 1534 st->start_time = pkt->pts;
0a5f92a1
MN
1535 }
1536 av_free_packet(pkt);
1537 }
12f996ed 1538
12f996ed
FB
1539 /* estimate the end time (duration) */
1540 /* XXX: may need to support wrapping */
1541 filesize = ic->file_size;
1542 offset = filesize - DURATION_MAX_READ_SIZE;
1543 if (offset < 0)
1544 offset = 0;
1545
12f996ed
FB
1546 url_fseek(&ic->pb, offset, SEEK_SET);
1547 read_size = 0;
1548 for(;;) {
1549 if (read_size >= DURATION_MAX_READ_SIZE)
1550 break;
115329f1 1551
12f996ed
FB
1552 ret = av_read_packet(ic, pkt);
1553 if (ret != 0)
1554 break;
1555 read_size += pkt->size;
1556 st = ic->streams[pkt->stream_index];
bf494092
NB
1557 if (pkt->pts != AV_NOPTS_VALUE &&
1558 st->start_time != AV_NOPTS_VALUE) {
c0df9d75 1559 end_time = pkt->pts;
12f996ed
FB
1560 duration = end_time - st->start_time;
1561 if (duration > 0) {
1562 if (st->duration == AV_NOPTS_VALUE ||
1563 st->duration < duration)
1564 st->duration = duration;
1565 }
1566 }
1567 av_free_packet(pkt);
1568 }
115329f1 1569
c0df9d75 1570 fill_all_stream_timings(ic);
12f996ed 1571
9ecf7fad 1572 url_fseek(&ic->pb, old_offset, SEEK_SET);
df886e7e
MN
1573 for(i=0; i<ic->nb_streams; i++){
1574 st= ic->streams[i];
1575 st->cur_dts= st->first_dts;
cc5297e8 1576 st->last_IP_pts = AV_NOPTS_VALUE;
df886e7e 1577 }
12f996ed
FB
1578}
1579
9ecf7fad 1580static void av_estimate_timings(AVFormatContext *ic, offset_t old_offset)
12f996ed 1581{
12f996ed
FB
1582 int64_t file_size;
1583
1584 /* get the file size, if possible */
1585 if (ic->iformat->flags & AVFMT_NOFILE) {
1586 file_size = 0;
1587 } else {
a965c478 1588 file_size = url_fsize(&ic->pb);
12f996ed
FB
1589 if (file_size < 0)
1590 file_size = 0;
1591 }
1592 ic->file_size = file_size;
1593
ff70e601
MR
1594 if ((!strcmp(ic->iformat->name, "mpeg") ||
1595 !strcmp(ic->iformat->name, "mpegts")) &&
1596 file_size && !ic->pb.is_streamed) {
12f996ed 1597 /* get accurate estimate from the PTSes */
9ecf7fad 1598 av_estimate_timings_from_pts(ic, old_offset);
c1e8b678 1599 } else if (av_has_duration(ic)) {
12f996ed
FB
1600 /* at least one components has timings - we use them for all
1601 the components */
1602 fill_all_stream_timings(ic);
1603 } else {
1604 /* less precise: use bit rate info */
1605 av_estimate_timings_from_bit_rate(ic);
1606 }
1607 av_update_stream_timings(ic);
1608
1609#if 0
1610 {
1611 int i;
1612 AVStream *st;
1613 for(i = 0;i < ic->nb_streams; i++) {
1614 st = ic->streams[i];
115329f1
DB
1615 printf("%d: start_time: %0.3f duration: %0.3f\n",
1616 i, (double)st->start_time / AV_TIME_BASE,
12f996ed
FB
1617 (double)st->duration / AV_TIME_BASE);
1618 }
115329f1
DB
1619 printf("stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
1620 (double)ic->start_time / AV_TIME_BASE,
12f996ed
FB
1621 (double)ic->duration / AV_TIME_BASE,
1622 ic->bit_rate / 1000);
1623 }
1624#endif
1625}
1626
b9a281db
FB
1627static int has_codec_parameters(AVCodecContext *enc)
1628{
1629 int val;
1630 switch(enc->codec_type) {
1631 case CODEC_TYPE_AUDIO:
1632 val = enc->sample_rate;
1633 break;
1634 case CODEC_TYPE_VIDEO:
644a9262 1635 val = enc->width && enc->pix_fmt != PIX_FMT_NONE;
b9a281db
FB
1636 break;
1637 default:
1638 val = 1;
1639 break;
1640 }
3303926c 1641 return (enc->codec_id != CODEC_ID_NONE && val != 0);
b9a281db
FB
1642}
1643
fb2758c8
FB
1644static int try_decode_frame(AVStream *st, const uint8_t *data, int size)
1645{
1646 int16_t *samples;
1647 AVCodec *codec;
3fdb6af9 1648 int got_picture, data_size, ret=0;
fb2758c8 1649 AVFrame picture;
115329f1 1650
01f4895c
MN
1651 if(!st->codec->codec){
1652 codec = avcodec_find_decoder(st->codec->codec_id);
fb2758c8
FB
1653 if (!codec)
1654 return -1;
01f4895c 1655 ret = avcodec_open(st->codec, codec);
fb2758c8
FB
1656 if (ret < 0)
1657 return ret;
43c0040a 1658 }
644a9262 1659
01f4895c
MN
1660 if(!has_codec_parameters(st->codec)){
1661 switch(st->codec->codec_type) {
fb2758c8 1662 case CODEC_TYPE_VIDEO:
115329f1 1663 ret = avcodec_decode_video(st->codec, &picture,
fb2758c8
FB
1664 &got_picture, (uint8_t *)data, size);
1665 break;
1666 case CODEC_TYPE_AUDIO:
3fdb6af9
BC
1667 data_size = FFMAX(size, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1668 samples = av_malloc(data_size);
fb2758c8
FB
1669 if (!samples)
1670 goto fail;
3fdb6af9
BC
1671 ret = avcodec_decode_audio2(st->codec, samples,
1672 &data_size, (uint8_t *)data, size);
fb2758c8
FB
1673 av_free(samples);
1674 break;
1675 default:
1676 break;
1677 }
644a9262 1678 }
fb2758c8 1679 fail:
fb2758c8
FB
1680 return ret;
1681}
1682
6fea687e
JD
1683static int set_codec_from_probe_data(AVStream *st, AVProbeData *pd, int score)
1684{
1685 AVInputFormat *fmt;
1686 fmt = av_probe_input_format2(pd, 1, &score);
1687
1688 if (fmt) {
1689 if (strncmp(fmt->name, "mp3", 3) == 0)
1690 st->codec->codec_id = CODEC_ID_MP3;
1691 else if (strncmp(fmt->name, "ac3", 3) == 0)
1692 st->codec->codec_id = CODEC_ID_AC3;
1693 }
efd5fc53 1694 return !!fmt;
6fea687e
JD
1695}
1696
45da8124
AJ
1697unsigned int codec_get_tag(const AVCodecTag *tags, int id)
1698{
1699 while (tags->id != CODEC_ID_NONE) {
1700 if (tags->id == id)
1701 return tags->tag;
1702 tags++;
1703 }
1704 return 0;
1705}
1706
1707enum CodecID codec_get_id(const AVCodecTag *tags, unsigned int tag)
1708{
41415d28
MN
1709 int i;
1710 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
1711 if(tag == tags[i].tag)
1712 return tags[i].id;
1713 }
1714 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
1715 if( toupper((tag >> 0)&0xFF) == toupper((tags[i].tag >> 0)&0xFF)
1716 && toupper((tag >> 8)&0xFF) == toupper((tags[i].tag >> 8)&0xFF)
1717 && toupper((tag >>16)&0xFF) == toupper((tags[i].tag >>16)&0xFF)
1718 && toupper((tag >>24)&0xFF) == toupper((tags[i].tag >>24)&0xFF))
1719 return tags[i].id;
45da8124
AJ
1720 }
1721 return CODEC_ID_NONE;
1722}
1723
1724unsigned int av_codec_get_tag(const AVCodecTag *tags[4], enum CodecID id)
1725{
1726 int i;
1727 for(i=0; tags && tags[i]; i++){
1728 int tag= codec_get_tag(tags[i], id);
1729 if(tag) return tag;
1730 }
1731 return 0;
1732}
1733
1734enum CodecID av_codec_get_id(const AVCodecTag *tags[4], unsigned int tag)
1735{
1736 int i;
1737 for(i=0; tags && tags[i]; i++){
1738 enum CodecID id= codec_get_id(tags[i], tag);
1739 if(id!=CODEC_ID_NONE) return id;
1740 }
1741 return CODEC_ID_NONE;
1742}
1743
fb2758c8
FB
1744/* absolute maximum size we read until we abort */
1745#define MAX_READ_SIZE 5000000
1746
fd97f6a2 1747#define MAX_STD_TIMEBASES (60*12+5)
4d43cbcc
MN
1748static int get_std_framerate(int i){
1749 if(i<60*12) return i*1001;
fd97f6a2 1750 else return ((int[]){24,30,60,12,15})[i-60*12]*1000*12;
4d43cbcc
MN
1751}
1752
b9a281db
FB
1753int av_find_stream_info(AVFormatContext *ic)
1754{
9f75260e 1755 int i, count, ret, read_size, j;
b9a281db 1756 AVStream *st;
fb2758c8 1757 AVPacket pkt1, *pkt;
15bc38e5 1758 int64_t last_dts[MAX_STREAMS];
3c150d16 1759 int duration_count[MAX_STREAMS]={0};
0cbff027 1760 double (*duration_error)[MAX_STD_TIMEBASES];
9ecf7fad 1761 offset_t old_offset = url_ftell(&ic->pb);
ea486ab3
BC
1762 int64_t codec_info_duration[MAX_STREAMS]={0};
1763 int codec_info_nb_frames[MAX_STREAMS]={0};
6fea687e
JD
1764 AVProbeData probe_data[MAX_STREAMS];
1765 int codec_identified[MAX_STREAMS]={0};
b9a281db 1766
0cbff027 1767 duration_error = av_mallocz(MAX_STREAMS * sizeof(*duration_error));
769e10f0 1768 if (!duration_error) return AVERROR(ENOMEM);
0cbff027 1769
c0df9d75
MN
1770 for(i=0;i<ic->nb_streams;i++) {
1771 st = ic->streams[i];
01f4895c 1772 if(st->codec->codec_type == CODEC_TYPE_VIDEO){
c0df9d75
MN
1773/* if(!st->time_base.num)
1774 st->time_base= */
01f4895c
MN
1775 if(!st->codec->time_base.num)
1776 st->codec->time_base= st->time_base;
c0df9d75 1777 }
90ad92b3
MN
1778 //only for the split stuff
1779 if (!st->parser) {
01f4895c 1780 st->parser = av_parser_init(st->codec->codec_id);
57004ff1 1781 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
7cbaa7ba
MN
1782 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1783 }
90ad92b3 1784 }
c0df9d75
MN
1785 }
1786
15bc38e5
MN
1787 for(i=0;i<MAX_STREAMS;i++){
1788 last_dts[i]= AV_NOPTS_VALUE;
15bc38e5 1789 }
115329f1 1790
6fea687e 1791 memset(probe_data, 0, sizeof(probe_data));
b9a281db
FB
1792 count = 0;
1793 read_size = 0;
b9a281db
FB
1794 for(;;) {
1795 /* check if one codec still needs to be handled */
1796 for(i=0;i<ic->nb_streams;i++) {
1797 st = ic->streams[i];
01f4895c 1798 if (!has_codec_parameters(st->codec))
b9a281db 1799 break;
3e76d1b5 1800 /* variable fps and no guess at the real fps */
6cc65ab3 1801 if( (st->codec->time_base.den >= 101LL*st->codec->time_base.num || st->codec->codec_id == CODEC_ID_MPEG2VIDEO)
01f4895c 1802 && duration_count[i]<20 && st->codec->codec_type == CODEC_TYPE_VIDEO)
3e76d1b5 1803 break;
01f4895c 1804 if(st->parser && st->parser->parser->split && !st->codec->extradata)
90ad92b3 1805 break;
82583548
MN
1806 if(st->first_dts == AV_NOPTS_VALUE)
1807 break;
b9a281db
FB
1808 }
1809 if (i == ic->nb_streams) {
1810 /* NOTE: if the format has no header, then we need to read
1811 some packets to get most of the streams, so we cannot
1812 stop here */
fb2758c8 1813 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
b9a281db
FB
1814 /* if we found the info for all the codecs, we can stop */
1815 ret = count;
1816 break;
1817 }
5fb83c38 1818 }
35eab0c0
MN
1819 /* we did not get all the codec info, but we read too much data */
1820 if (read_size >= MAX_READ_SIZE) {
1821 ret = count;
1822 break;
1823 }
b9a281db 1824
fb2758c8
FB
1825 /* NOTE: a new stream can be added there if no header in file
1826 (AVFMTCTX_NOHEADER) */
1827 ret = av_read_frame_internal(ic, &pkt1);
1828 if (ret < 0) {
1829 /* EOF or error */
1830 ret = -1; /* we could not have all the codec parameters before EOF */
e19456e3
MN
1831 for(i=0;i<ic->nb_streams;i++) {
1832 st = ic->streams[i];
305ee50f
MN
1833 if (!has_codec_parameters(st->codec)){
1834 char buf[256];
1835 avcodec_string(buf, sizeof(buf), st->codec, 0);
1836 av_log(ic, AV_LOG_INFO, "Could not find codec parameters (%s)\n", buf);
344a18c3
MR
1837 } else {
1838 ret = 0;
305ee50f 1839 }
e19456e3 1840 }
fb2758c8
FB
1841 break;
1842 }
1843
02b15cc8
MN
1844 pkt= add_to_pktbuf(ic, &pkt1);
1845 if(av_dup_packet(pkt) < 0)
1846 return AVERROR(ENOMEM);
b9a281db 1847
fb2758c8 1848 read_size += pkt->size;
b9a281db
FB
1849
1850 st = ic->streams[pkt->stream_index];
ea486ab3
BC
1851 if(codec_info_nb_frames[st->index]>1)
1852 codec_info_duration[st->index] += pkt->duration;
fb2758c8 1853 if (pkt->duration != 0)
ea486ab3 1854 codec_info_nb_frames[st->index]++;
fb2758c8 1855
cefe0607 1856 {
3c150d16
MN
1857 int index= pkt->stream_index;
1858 int64_t last= last_dts[index];
1859 int64_t duration= pkt->dts - last;
1860
1861 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && duration>0){
4d43cbcc
MN
1862 double dur= duration * av_q2d(st->time_base);
1863
1864// if(st->codec->codec_type == CODEC_TYPE_VIDEO)
1865// av_log(NULL, AV_LOG_ERROR, "%f\n", dur);
1694118b 1866 if(duration_count[index] < 2)
0cbff027 1867 memset(duration_error, 0, MAX_STREAMS * sizeof(*duration_error));
69c262d1
MN
1868 for(i=1; i<MAX_STD_TIMEBASES; i++){
1869 int framerate= get_std_framerate(i);
1870 int ticks= lrintf(dur*framerate/(1001*12));
1871 double error= dur - ticks*1001*12/(double)framerate;
1872 duration_error[index][i] += error*error;
1873 }
4d43cbcc 1874 duration_count[index]++;
15bc38e5 1875 }
fd97f6a2
MN
1876 if(last == AV_NOPTS_VALUE || duration_count[index]<=1)
1877 last_dts[pkt->stream_index]= pkt->dts;
6fea687e
JD
1878
1879 if (st->codec->codec_id == CODEC_ID_NONE) {
1880 AVProbeData *pd = &(probe_data[st->index]);
9be51815 1881 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
6fea687e
JD
1882 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
1883 pd->buf_size += pkt->size;
9be51815 1884 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
6fea687e 1885 }
15bc38e5 1886 }
01f4895c
MN
1887 if(st->parser && st->parser->parser->split && !st->codec->extradata){
1888 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
90ad92b3 1889 if(i){
01f4895c 1890 st->codec->extradata_size= i;
62c52121 1891 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
01f4895c 1892 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
62c52121 1893 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
90ad92b3
MN
1894 }
1895 }
115329f1 1896
fb2758c8
FB
1897 /* if still no information, we try to open the codec and to
1898 decompress the frame. We try to avoid that in most cases as
1899 it takes longer and uses more memory. For MPEG4, we need to
1900 decompress for Quicktime. */
01f4895c
MN
1901 if (!has_codec_parameters(st->codec) /*&&
1902 (st->codec->codec_id == CODEC_ID_FLV1 ||
1903 st->codec->codec_id == CODEC_ID_H264 ||
1904 st->codec->codec_id == CODEC_ID_H263 ||
1905 st->codec->codec_id == CODEC_ID_H261 ||
1906 st->codec->codec_id == CODEC_ID_VORBIS ||
1907 st->codec->codec_id == CODEC_ID_MJPEG ||
1908 st->codec->codec_id == CODEC_ID_PNG ||
1909 st->codec->codec_id == CODEC_ID_PAM ||
1910 st->codec->codec_id == CODEC_ID_PGM ||
1911 st->codec->codec_id == CODEC_ID_PGMYUV ||
1912 st->codec->codec_id == CODEC_ID_PBM ||
1913 st->codec->codec_id == CODEC_ID_PPM ||
1914 st->codec->codec_id == CODEC_ID_SHORTEN ||
1915 (st->codec->codec_id == CODEC_ID_MPEG4 && !st->need_parsing))*/)
fb2758c8 1916 try_decode_frame(st, pkt->data, pkt->size);
115329f1 1917
b3fc0925 1918 if (st->time_base.den > 0 && av_rescale_q(codec_info_duration[st->index], st->time_base, AV_TIME_BASE_Q) >= ic->max_analyze_duration) {
fb2758c8 1919 break;
b9a281db
FB
1920 }
1921 count++;
1922 }
1923
43c0040a
MN
1924 // close codecs which where opened in try_decode_frame()
1925 for(i=0;i<ic->nb_streams;i++) {
1926 st = ic->streams[i];
01f4895c
MN
1927 if(st->codec->codec)
1928 avcodec_close(st->codec);
43c0040a 1929 }
b9a281db
FB
1930 for(i=0;i<ic->nb_streams;i++) {
1931 st = ic->streams[i];
01f4895c
MN
1932 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1933 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_sample)
1934 st->codec->codec_tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
15bc38e5 1935
1694118b 1936 if(duration_count[i]
4d43cbcc 1937 && (st->codec->time_base.num*101LL <= st->codec->time_base.den || st->codec->codec_id == CODEC_ID_MPEG2VIDEO) /*&&
730ba406 1938 //FIXME we should not special case mpeg2, but this needs testing with non mpeg2 ...
4d43cbcc
MN
1939 st->time_base.num*duration_sum[i]/duration_count[i]*101LL > st->time_base.den*/){
1940 double best_error= 2*av_q2d(st->time_base);
1941 best_error= best_error*best_error*duration_count[i]*1000*12*30;
1942
1943 for(j=1; j<MAX_STD_TIMEBASES; j++){
1944 double error= duration_error[i][j] * get_std_framerate(j);
1945// if(st->codec->codec_type == CODEC_TYPE_VIDEO)
1946// av_log(NULL, AV_LOG_ERROR, "%f %f\n", get_std_framerate(j) / 12.0/1001, error);
9f75260e
MN
1947 if(error < best_error){
1948 best_error= error;
4d43cbcc 1949 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, get_std_framerate(j), 12*1001, INT_MAX);
9f75260e 1950 }
3c150d16 1951 }
15bc38e5
MN
1952 }
1953
c0df9d75 1954 if (!st->r_frame_rate.num){
5523d5f4
MN
1955 if( st->codec->time_base.den * (int64_t)st->time_base.num
1956 <= st->codec->time_base.num * (int64_t)st->time_base.den){
1957 st->r_frame_rate.num = st->codec->time_base.den;
1958 st->r_frame_rate.den = st->codec->time_base.num;
1959 }else{
1960 st->r_frame_rate.num = st->time_base.den;
1961 st->r_frame_rate.den = st->time_base.num;
1962 }
14bea432 1963 }
a185f52a 1964 }else if(st->codec->codec_type == CODEC_TYPE_AUDIO) {
19ecf882 1965 if (st->codec->codec_id == CODEC_ID_NONE && probe_data[st->index].buf_size > 0) {
e0c850a8 1966 codec_identified[st->index] = set_codec_from_probe_data(st, &(probe_data[st->index]), 1);
6fea687e 1967 if (codec_identified[st->index]) {
57004ff1 1968 st->need_parsing = AVSTREAM_PARSE_FULL;
6fea687e
JD
1969 }
1970 }
a185f52a
MN
1971 if(!st->codec->bits_per_sample)
1972 st->codec->bits_per_sample= av_get_bits_per_sample(st->codec->codec_id);
b9a281db 1973 }
de6d9b64 1974 }
b9a281db 1975
9ecf7fad 1976 av_estimate_timings(ic, old_offset);
6fea687e
JD
1977
1978 for(i=0;i<ic->nb_streams;i++) {
1979 st = ic->streams[i];
c7385375
MN
1980 if (codec_identified[st->index])
1981 break;
1982 }
1983 //FIXME this is a mess
1984 if(i!=ic->nb_streams){
1985 av_read_frame_flush(ic);
1986 for(i=0;i<ic->nb_streams;i++) {
1987 st = ic->streams[i];
1988 if (codec_identified[st->index]) {
1989 av_seek_frame(ic, st->index, 0.0, 0);
1990 }
1991 st->cur_dts= st->first_dts;
6fea687e 1992 }
c7385375 1993 url_fseek(&ic->pb, ic->data_offset, SEEK_SET);
6fea687e
JD
1994 }
1995
e928649b
MN
1996#if 0
1997 /* correct DTS for b frame streams with no timestamps */
1998 for(i=0;i<ic->nb_streams;i++) {
1999 st = ic->streams[i];
01f4895c 2000 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
e928649b
MN
2001 if(b-frames){
2002 ppktl = &ic->packet_buffer;
2003 while(ppkt1){
2004 if(ppkt1->stream_index != i)
2005 continue;
2006 if(ppkt1->pkt->dts < 0)
2007 break;
2008 if(ppkt1->pkt->pts != AV_NOPTS_VALUE)
2009 break;
2010 ppkt1->pkt->dts -= delta;
2011 ppkt1= ppkt1->next;
2012 }
2013 if(ppkt1)
2014 continue;
2015 st->cur_dts -= delta;
2016 }
2017 }
2018 }
2019#endif
0cbff027
KA
2020
2021 av_free(duration_error);
6fea687e
JD
2022 for(i=0;i<MAX_STREAMS;i++){
2023 av_freep(&(probe_data[i].buf));
2024 }
0cbff027 2025
b9a281db 2026 return ret;
de6d9b64
FB
2027}
2028
fb2758c8
FB
2029/*******************************************************/
2030
fb2758c8
FB
2031int av_read_play(AVFormatContext *s)
2032{
2033 if (!s->iformat->read_play)
85565db0 2034 return AVERROR(ENOSYS);
fb2758c8
FB
2035 return s->iformat->read_play(s);
2036}
2037
fb2758c8
FB
2038int av_read_pause(AVFormatContext *s)
2039{
2040 if (!s->iformat->read_pause)
85565db0 2041 return AVERROR(ENOSYS);
fb2758c8
FB
2042 return s->iformat->read_pause(s);
2043}
2044
de6d9b64
FB
2045void av_close_input_file(AVFormatContext *s)
2046{
b6892136 2047 int i, must_open_file;
da24c5e3 2048 AVStream *st;
de6d9b64 2049
fb2758c8
FB
2050 /* free previous packet */
2051 if (s->cur_st && s->cur_st->parser)
115329f1 2052 av_free_packet(&s->cur_pkt);
fb2758c8 2053
b9a281db
FB
2054 if (s->iformat->read_close)
2055 s->iformat->read_close(s);
de6d9b64 2056 for(i=0;i<s->nb_streams;i++) {
da24c5e3
FB
2057 /* free all data in a stream component */
2058 st = s->streams[i];
fb2758c8
FB
2059 if (st->parser) {
2060 av_parser_close(st->parser);
de6d9b64 2061 }
fb2758c8 2062 av_free(st->index_entries);
a5e9102b 2063 av_free(st->codec->extradata);
01f4895c 2064 av_free(st->codec);
fb2758c8 2065 av_free(st);
de6d9b64 2066 }
15afa396
NS
2067 for(i=s->nb_programs-1; i>=0; i--) {
2068 av_freep(&s->programs[i]->provider_name);
2069 av_freep(&s->programs[i]->name);
2070 av_freep(&s->programs[i]);
2071 }
fb2758c8 2072 flush_packet_queue(s);
b6892136 2073 must_open_file = 1;
da24c5e3 2074 if (s->iformat->flags & AVFMT_NOFILE) {
b6892136
FB
2075 must_open_file = 0;
2076 }
2077 if (must_open_file) {
96baaa6a
FB
2078 url_fclose(&s->pb);
2079 }
a8dbe951 2080 av_freep(&s->priv_data);
1ea4f593 2081 av_free(s);
de6d9b64
FB
2082}
2083
b9a281db
FB
2084AVStream *av_new_stream(AVFormatContext *s, int id)
2085{
2086 AVStream *st;
504ee036 2087 int i;
b9a281db
FB
2088
2089 if (s->nb_streams >= MAX_STREAMS)
2090 return NULL;
2091
2092 st = av_mallocz(sizeof(AVStream));
2093 if (!st)
2094 return NULL;
115329f1 2095
01f4895c 2096 st->codec= avcodec_alloc_context();
48091512
FB
2097 if (s->iformat) {
2098 /* no default bitrate if decoding */
01f4895c 2099 st->codec->bit_rate = 0;
48091512 2100 }
b9a281db
FB
2101 st->index = s->nb_streams;
2102 st->id = id;
12f996ed
FB
2103 st->start_time = AV_NOPTS_VALUE;
2104 st->duration = AV_NOPTS_VALUE;
e928649b 2105 st->cur_dts = AV_NOPTS_VALUE;
82583548 2106 st->first_dts = AV_NOPTS_VALUE;
9ee91c2f
MN
2107
2108 /* default pts settings is MPEG like */
2109 av_set_pts_info(st, 33, 1, 90000);
77405fc8 2110 st->last_IP_pts = AV_NOPTS_VALUE;
504ee036
MN
2111 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2112 st->pts_buffer[i]= AV_NOPTS_VALUE;
9ee91c2f 2113
b9a281db
FB
2114 s->streams[s->nb_streams++] = st;
2115 return st;
2116}
2117
15afa396
NS
2118AVProgram *av_new_program(AVFormatContext *ac, int id)
2119{
2120 AVProgram *program=NULL;
2121 int i;
2122
2123#ifdef DEBUG_SI
2124 av_log(ac, AV_LOG_DEBUG, "new_program: id=0x%04x\n", id);
2125#endif
2126
2127 for(i=0; i<ac->nb_programs; i++)
2128 if(ac->programs[i]->id == id)
2129 program = ac->programs[i];
2130
2131 if(!program){
2132 program = av_mallocz(sizeof(AVProgram));
2133 if (!program)
2134 return NULL;
2135 dynarray_add(&ac->programs, &ac->nb_programs, program);
2136 program->discard = AVDISCARD_NONE;
2137 }
2138 program->id = id;
2139
2140 return program;
2141}
2142
2143void av_set_program_name(AVProgram *program, char *provider_name, char *name)
2144{
2145 assert(!provider_name == !name);
2146 if(name){
2147 av_free(program->provider_name);
2148 av_free(program-> name);
2149 program->provider_name = av_strdup(provider_name);
2150 program-> name = av_strdup( name);
2151 }
2152}
2153
2154
b9a281db
FB
2155/************************************************************/
2156/* output media file */
de6d9b64 2157
87a0a681
FB
2158int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
2159{
2160 int ret;
115329f1 2161
98486a6b
RS
2162 if (s->oformat->priv_data_size > 0) {
2163 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2164 if (!s->priv_data)
769e10f0 2165 return AVERROR(ENOMEM);
98486a6b
RS
2166 } else
2167 s->priv_data = NULL;
115329f1 2168
87a0a681
FB
2169 if (s->oformat->set_parameters) {
2170 ret = s->oformat->set_parameters(s, ap);
2171 if (ret < 0)
2172 return ret;
2173 }
2174 return 0;
2175}
2176
b9a281db
FB
2177int av_write_header(AVFormatContext *s)
2178{
1e51d801
FB
2179 int ret, i;
2180 AVStream *st;
2181
9450118b
MN
2182 // some sanity checks
2183 for(i=0;i<s->nb_streams;i++) {
2184 st = s->streams[i];
2185
2186 switch (st->codec->codec_type) {
2187 case CODEC_TYPE_AUDIO:
2188 if(st->codec->sample_rate<=0){
2189 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
2190 return -1;
2191 }
2192 break;
2193 case CODEC_TYPE_VIDEO:
2194 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
2195 av_log(s, AV_LOG_ERROR, "time base not set\n");
2196 return -1;
2197 }
2198 if(st->codec->width<=0 || st->codec->height<=0){
2199 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
2200 return -1;
2201 }
2202 break;
2203 }
5ecfa9f5
MN
2204
2205 if(s->oformat->codec_tag){
2206 if(st->codec->codec_tag){
2207 //FIXME
2208 //check that tag + id is in the table
2209 //if neither is in the table -> ok
2210 //if tag is in the table with another id -> FAIL
2211 //if id is in the table with another tag -> FAIL unless strict < ?
2212 }else
2213 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
2214 }
9450118b
MN
2215 }
2216
8fae2df5 2217 if (!s->priv_data && s->oformat->priv_data_size > 0) {
c6efa4b5
BC
2218 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2219 if (!s->priv_data)
769e10f0 2220 return AVERROR(ENOMEM);
8fae2df5 2221 }
c6efa4b5 2222
31e11451
MN
2223 if(s->oformat->write_header){
2224 ret = s->oformat->write_header(s);
2225 if (ret < 0)
2226 return ret;
2227 }
1e51d801
FB
2228
2229 /* init PTS generation */
2230 for(i=0;i<s->nb_streams;i++) {
f0ff20a1 2231 int64_t den = AV_NOPTS_VALUE;
1e51d801
FB
2232 st = s->streams[i];
2233
01f4895c 2234 switch (st->codec->codec_type) {
1e51d801 2235 case CODEC_TYPE_AUDIO:
f0ff20a1 2236 den = (int64_t)st->time_base.num * st->codec->sample_rate;
1e51d801
FB
2237 break;
2238 case CODEC_TYPE_VIDEO:
f0ff20a1 2239 den = (int64_t)st->time_base.num * st->codec->time_base.den;
1e51d801
FB
2240 break;
2241 default:
2242 break;
2243 }
f0ff20a1
WG
2244 if (den != AV_NOPTS_VALUE) {
2245 if (den <= 0)
2246 return AVERROR_INVALIDDATA;
2247 av_frac_init(&st->pts, 0, 0, den);
2248 }
1e51d801
FB
2249 }
2250 return 0;
b9a281db
FB
2251}
2252
3c895fc0 2253//FIXME merge with compute_pkt_fields
5edea431 2254static int compute_pkt_fields2(AVStream *st, AVPacket *pkt){
504ee036
MN
2255 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
2256 int num, den, frame_size, i;
b0c7f5a9 2257
949b1a13 2258// av_log(st->codec, AV_LOG_DEBUG, "av_write_frame: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n", pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
115329f1 2259
e928649b
MN
2260/* if(pkt->pts == AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE)
2261 return -1;*/
115329f1 2262
e928649b 2263 /* duration field */
3c895fc0
MN
2264 if (pkt->duration == 0) {
2265 compute_frame_duration(&num, &den, st, NULL, pkt);
2266 if (den && num) {
2267 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num);
2268 }
2269 }
e928649b
MN
2270
2271 //XXX/FIXME this is a temporary hack until all encoders output pts
504ee036 2272 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
e928649b
MN
2273 pkt->dts=
2274// pkt->pts= st->cur_dts;
2275 pkt->pts= st->pts.val;
2276 }
2277
115329f1 2278 //calculate dts from pts
e928649b 2279 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE){
504ee036
MN
2280 st->pts_buffer[0]= pkt->pts;
2281 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
2282 st->pts_buffer[i]= (i-delay-1) * pkt->duration;
2283 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1345f4ed 2284 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
504ee036
MN
2285
2286 pkt->dts= st->pts_buffer[0];
e928649b 2287 }
115329f1 2288
5edea431 2289 if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && st->cur_dts >= pkt->dts){
578688fa 2290 av_log(NULL, AV_LOG_ERROR, "error, non monotone timestamps %"PRId64" >= %"PRId64"\n", st->cur_dts, pkt->dts);
5edea431
MN
2291 return -1;
2292 }
2293 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
578688fa 2294 av_log(NULL, AV_LOG_ERROR, "error, pts < dts\n");
5edea431
MN
2295 return -1;
2296 }
2297
949b1a13 2298// av_log(NULL, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
e928649b
MN
2299 st->cur_dts= pkt->dts;
2300 st->pts.val= pkt->dts;
2301
1e51d801 2302 /* update pts */
01f4895c 2303 switch (st->codec->codec_type) {
1e51d801 2304 case CODEC_TYPE_AUDIO:
01f4895c 2305 frame_size = get_audio_frame_size(st->codec, pkt->size);
6d8f985e 2306
b0c7f5a9 2307 /* HACK/FIXME, we skip the initial 0-size packets as they are most likely equal to the encoder delay,
6d8f985e 2308 but it would be better if we had the real timestamps from the encoder */
e928649b 2309 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
9ee91c2f 2310 av_frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
7feb950a 2311 }
1e51d801
FB
2312 break;
2313 case CODEC_TYPE_VIDEO:
01f4895c 2314 av_frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
1e51d801
FB
2315 break;
2316 default:
2317 break;
2318 }
5edea431 2319 return 0;
3c895fc0
MN
2320}
2321
2322static void truncate_ts(AVStream *st, AVPacket *pkt){
2323 int64_t pts_mask = (2LL << (st->pts_wrap_bits-1)) - 1;
115329f1 2324
e0c91bc2
MN
2325// if(pkt->dts < 0)
2326// pkt->dts= 0; //this happens for low_delay=0 and b frames, FIXME, needs further invstigation about what we should do here
115329f1 2327
68a432cf 2328 if (pkt->pts != AV_NOPTS_VALUE)
8533284d 2329 pkt->pts &= pts_mask;
68a432cf 2330 if (pkt->dts != AV_NOPTS_VALUE)
8533284d 2331 pkt->dts &= pts_mask;
3c895fc0
MN
2332}
2333
3c895fc0
MN
2334int av_write_frame(AVFormatContext *s, AVPacket *pkt)
2335{
576ae256
MN
2336 int ret;
2337
5edea431 2338 ret=compute_pkt_fields2(s->streams[pkt->stream_index], pkt);
494bbf58 2339 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
5edea431 2340 return ret;
115329f1 2341
3c895fc0
MN
2342 truncate_ts(s->streams[pkt->stream_index], pkt);
2343
576ae256
MN
2344 ret= s->oformat->write_packet(s, pkt);
2345 if(!ret)
2346 ret= url_ferror(&s->pb);
2347 return ret;
3c895fc0
MN
2348}
2349
f21c0b4c 2350int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
fe2d6fe2
MN
2351 AVPacketList *pktl, **next_point, *this_pktl;
2352 int stream_count=0;
2353 int streams[MAX_STREAMS];
2354
2355 if(pkt){
2356 AVStream *st= s->streams[ pkt->stream_index];
2357
2577897d 2358// assert(pkt->destruct != av_destruct_packet); //FIXME
fe2d6fe2
MN
2359
2360 this_pktl = av_mallocz(sizeof(AVPacketList));
2361 this_pktl->pkt= *pkt;
2577897d
MN
2362 if(pkt->destruct == av_destruct_packet)
2363 pkt->destruct= NULL; // non shared -> must keep original from being freed
2364 else
2365 av_dup_packet(&this_pktl->pkt); //shared -> must dup
fe2d6fe2
MN
2366
2367 next_point = &s->packet_buffer;
2368 while(*next_point){
2369 AVStream *st2= s->streams[ (*next_point)->pkt.stream_index];
2370 int64_t left= st2->time_base.num * (int64_t)st ->time_base.den;
2371 int64_t right= st ->time_base.num * (int64_t)st2->time_base.den;
2372 if((*next_point)->pkt.dts * left > pkt->dts * right) //FIXME this can overflow
2373 break;
2374 next_point= &(*next_point)->next;
2375 }
2376 this_pktl->next= *next_point;
2377 *next_point= this_pktl;
2378 }
115329f1 2379
fe2d6fe2
MN
2380 memset(streams, 0, sizeof(streams));
2381 pktl= s->packet_buffer;
2382 while(pktl){
949b1a13 2383//av_log(s, AV_LOG_DEBUG, "show st:%d dts:%"PRId64"\n", pktl->pkt.stream_index, pktl->pkt.dts);
fe2d6fe2
MN
2384 if(streams[ pktl->pkt.stream_index ] == 0)
2385 stream_count++;
2386 streams[ pktl->pkt.stream_index ]++;
2387 pktl= pktl->next;
2388 }
115329f1 2389
fe2d6fe2
MN
2390 if(s->nb_streams == stream_count || (flush && stream_count)){
2391 pktl= s->packet_buffer;
2392 *out= pktl->pkt;
115329f1
DB
2393
2394 s->packet_buffer= pktl->next;
fe2d6fe2
MN
2395 av_freep(&pktl);
2396 return 1;
2397 }else{
2398 av_init_packet(out);
2399 return 0;
2400 }
2401}
2402
2403/**
2404 * Interleaves a AVPacket correctly so it can be muxed.
2405 * @param out the interleaved packet will be output here
2406 * @param in the input packet
2407 * @param flush 1 if no further packets are available as input and all
2408 * remaining packets should be output
115329f1 2409 * @return 1 if a packet was output, 0 if no packet could be output,
fe2d6fe2
MN
2410 * < 0 if an error occured
2411 */
2412static int av_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
2413 if(s->oformat->interleave_packet)
2414 return s->oformat->interleave_packet(s, out, in, flush);
2415 else
2416 return av_interleave_packet_per_dts(s, out, in, flush);
2417}
2418
3c895fc0 2419int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
3c895fc0
MN
2420 AVStream *st= s->streams[ pkt->stream_index];
2421
6f824977 2422 //FIXME/XXX/HACK drop zero sized packets
01f4895c 2423 if(st->codec->codec_type == CODEC_TYPE_AUDIO && pkt->size==0)
6f824977 2424 return 0;
3ce16b30 2425
949b1a13 2426//av_log(NULL, AV_LOG_DEBUG, "av_interleaved_write_frame %d %"PRId64" %"PRId64"\n", pkt->size, pkt->dts, pkt->pts);
494bbf58 2427 if(compute_pkt_fields2(st, pkt) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3ce16b30 2428 return -1;
115329f1 2429
3c895fc0
MN
2430 if(pkt->dts == AV_NOPTS_VALUE)
2431 return -1;
3c895fc0 2432
fe2d6fe2
MN
2433 for(;;){
2434 AVPacket opkt;
2435 int ret= av_interleave_packet(s, &opkt, pkt, 0);
2436 if(ret<=0) //FIXME cleanup needed for ret<0 ?
2437 return ret;
115329f1 2438
fe2d6fe2
MN
2439 truncate_ts(s->streams[opkt.stream_index], &opkt);
2440 ret= s->oformat->write_packet(s, &opkt);
115329f1 2441
fe2d6fe2
MN
2442 av_free_packet(&opkt);
2443 pkt= NULL;
115329f1 2444
3c895fc0
MN
2445 if(ret<0)
2446 return ret;
576ae256
MN
2447 if(url_ferror(&s->pb))
2448 return url_ferror(&s->pb);
3c895fc0 2449 }
b9a281db
FB
2450}
2451
b9a281db
FB
2452int av_write_trailer(AVFormatContext *s)
2453{
c40a3a42 2454 int ret, i;
115329f1 2455
fe2d6fe2
MN
2456 for(;;){
2457 AVPacket pkt;
2458 ret= av_interleave_packet(s, &pkt, NULL, 1);
2459 if(ret<0) //FIXME cleanup needed for ret<0 ?
c40a3a42 2460 goto fail;
fe2d6fe2
MN
2461 if(!ret)
2462 break;
115329f1 2463
fe2d6fe2
MN
2464 truncate_ts(s->streams[pkt.stream_index], &pkt);
2465 ret= s->oformat->write_packet(s, &pkt);
115329f1 2466
fe2d6fe2 2467 av_free_packet(&pkt);
115329f1 2468
3c895fc0 2469 if(ret<0)
c40a3a42 2470 goto fail;
576ae256
MN
2471 if(url_ferror(&s->pb))
2472 goto fail;
3c895fc0
MN
2473 }
2474
31e11451
MN
2475 if(s->oformat->write_trailer)
2476 ret = s->oformat->write_trailer(s);
c40a3a42 2477fail:
576ae256
MN
2478 if(ret == 0)
2479 ret=url_ferror(&s->pb);
c40a3a42
MN
2480 for(i=0;i<s->nb_streams;i++)
2481 av_freep(&s->streams[i]->priv_data);
b9a281db
FB
2482 av_freep(&s->priv_data);
2483 return ret;
de6d9b64
FB
2484}
2485
2486/* "user interface" functions */
2487
2488void dump_format(AVFormatContext *ic,
115329f1 2489 int index,
de6d9b64
FB
2490 const char *url,
2491 int is_output)
2492{
b9a281db 2493 int i, flags;
de6d9b64
FB
2494 char buf[256];
2495
115329f1 2496 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
de6d9b64 2497 is_output ? "Output" : "Input",
115329f1
DB
2498 index,
2499 is_output ? ic->oformat->name : ic->iformat->name,
de6d9b64 2500 is_output ? "to" : "from", url);
12f996ed 2501 if (!is_output) {
2143116d 2502 av_log(NULL, AV_LOG_INFO, " Duration: ");
12f996ed
FB
2503 if (ic->duration != AV_NOPTS_VALUE) {
2504 int hours, mins, secs, us;
2505 secs = ic->duration / AV_TIME_BASE;
2506 us = ic->duration % AV_TIME_BASE;
2507 mins = secs / 60;
2508 secs %= 60;
2509 hours = mins / 60;
2510 mins %= 60;
115329f1 2511 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%01d", hours, mins, secs,
12f996ed
FB
2512 (10 * us) / AV_TIME_BASE);
2513 } else {
2143116d 2514 av_log(NULL, AV_LOG_INFO, "N/A");
12f996ed 2515 }
d0f3f159
WG
2516 if (ic->start_time != AV_NOPTS_VALUE) {
2517 int secs, us;
2143116d 2518 av_log(NULL, AV_LOG_INFO, ", start: ");
d0f3f159
WG
2519 secs = ic->start_time / AV_TIME_BASE;
2520 us = ic->start_time % AV_TIME_BASE;
2143116d 2521 av_log(NULL, AV_LOG_INFO, "%d.%06d",
d0f3f159
WG
2522 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
2523 }
2143116d 2524 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
12f996ed 2525 if (ic->bit_rate) {
2143116d 2526 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
12f996ed 2527 } else {
2143116d 2528 av_log(NULL, AV_LOG_INFO, "N/A");
12f996ed 2529 }
2143116d 2530 av_log(NULL, AV_LOG_INFO, "\n");
12f996ed 2531 }
de6d9b64
FB
2532 for(i=0;i<ic->nb_streams;i++) {
2533 AVStream *st = ic->streams[i];
21189011 2534 int g= ff_gcd(st->time_base.num, st->time_base.den);
01f4895c 2535 avcodec_string(buf, sizeof(buf), st->codec, is_output);
2143116d 2536 av_log(NULL, AV_LOG_INFO, " Stream #%d.%d", index, i);
b9a281db
FB
2537 /* the pid is an important information, so we display it */
2538 /* XXX: add a generic system */
2539 if (is_output)
2540 flags = ic->oformat->flags;
2541 else
2542 flags = ic->iformat->flags;
2543 if (flags & AVFMT_SHOW_IDS) {
2143116d 2544 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
b9a281db 2545 }
c6ec28b1
MN
2546 if (strlen(st->language) > 0) {
2547 av_log(NULL, AV_LOG_INFO, "(%s)", st->language);
2548 }
21189011 2549 av_log(NULL, AV_LOG_DEBUG, ", %d/%d", st->time_base.num/g, st->time_base.den/g);
47dd81c7 2550 av_log(NULL, AV_LOG_INFO, ": %s", buf);
21189011 2551 if(st->codec->codec_type == CODEC_TYPE_VIDEO){
780eb1c9
MN
2552 if(st->r_frame_rate.den && st->r_frame_rate.num)
2553 av_log(NULL, AV_LOG_INFO, ", %5.2f fps(r)", av_q2d(st->r_frame_rate));
2554/* else if(st->time_base.den && st->time_base.num)
2555 av_log(NULL, AV_LOG_INFO, ", %5.2f fps(m)", 1/av_q2d(st->time_base));*/
2556 else
2557 av_log(NULL, AV_LOG_INFO, ", %5.2f fps(c)", 1/av_q2d(st->codec->time_base));
21189011 2558 }
47dd81c7 2559 av_log(NULL, AV_LOG_INFO, "\n");
de6d9b64
FB
2560 }
2561}
2562
de6d9b64
FB
2563int parse_image_size(int *width_ptr, int *height_ptr, const char *str)
2564{
26ef3220 2565 return av_parse_video_frame_size(width_ptr, height_ptr, str);
de6d9b64
FB
2566}
2567
26ef3220 2568int parse_frame_rate(int *frame_rate_num, int *frame_rate_den, const char *arg)
445f1b83 2569{
26ef3220
SS
2570 AVRational frame_rate;
2571 int ret = av_parse_video_frame_rate(&frame_rate, arg);
2572 *frame_rate_num= frame_rate.num;
2573 *frame_rate_den= frame_rate.den;
2574 return ret;
445f1b83
RS
2575}
2576
82e4ac2c
RP
2577/**
2578 * gets the current time in micro seconds.
2579 */
2580int64_t av_gettime(void)
2581{
2582 struct timeval tv;
2583 gettimeofday(&tv,NULL);
2584 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
2585}
2586
0c1a9eda 2587int64_t parse_date(const char *datestr, int duration)
de6d9b64
FB
2588{
2589 const char *p;
0c1a9eda 2590 int64_t t;
2dbceb9f 2591 struct tm dt;
c5510dd6
PG
2592 int i;
2593 static const char *date_fmt[] = {
2594 "%Y-%m-%d",
2595 "%Y%m%d",
2596 };
2597 static const char *time_fmt[] = {
2598 "%H:%M:%S",
2599 "%H%M%S",
2600 };
2601 const char *q;
916c80e9 2602 int is_utc, len;
c5510dd6 2603 char lastch;
a6a92a9a 2604 int negative = 0;
6d8f985e
MN
2605
2606#undef time
c5510dd6
PG
2607 time_t now = time(0);
2608
916c80e9
FB
2609 len = strlen(datestr);
2610 if (len > 0)
2611 lastch = datestr[len - 1];
2612 else
2613 lastch = '\0';
c5510dd6 2614 is_utc = (lastch == 'z' || lastch == 'Z');
2dbceb9f
PG
2615
2616 memset(&dt, 0, sizeof(dt));
de6d9b64
FB
2617
2618 p = datestr;
916c80e9 2619 q = NULL;
de6d9b64 2620 if (!duration) {
a8f70d72 2621 /* parse the year-month-day part */
c5510dd6 2622 for (i = 0; i < sizeof(date_fmt) / sizeof(date_fmt[0]); i++) {
f71869a4 2623 q = small_strptime(p, date_fmt[i], &dt);
c5510dd6
PG
2624 if (q) {
2625 break;
2626 }
2627 }
2628
a8f70d72
SS
2629 /* if the year-month-day part is missing, then take the
2630 * current year-month-day time */
c5510dd6
PG
2631 if (!q) {
2632 if (is_utc) {
2633 dt = *gmtime(&now);
2634 } else {
2635 dt = *localtime(&now);
2636 }
2637 dt.tm_hour = dt.tm_min = dt.tm_sec = 0;
de6d9b64 2638 } else {
c5510dd6 2639 p = q;
de6d9b64 2640 }
c5510dd6
PG
2641
2642 if (*p == 'T' || *p == 't' || *p == ' ')
2643 p++;
c5510dd6 2644
a8f70d72 2645 /* parse the hour-minute-second part */
916c80e9 2646 for (i = 0; i < sizeof(time_fmt) / sizeof(time_fmt[0]); i++) {
f71869a4 2647 q = small_strptime(p, time_fmt[i], &dt);
916c80e9
FB
2648 if (q) {
2649 break;
2650 }
2651 }
2652 } else {
a8f70d72 2653 /* parse datestr as a duration */
bb270c08
DB
2654 if (p[0] == '-') {
2655 negative = 1;
2656 ++p;
2657 }
a8f70d72 2658 /* parse datestr as HH:MM:SS */
f71869a4 2659 q = small_strptime(p, time_fmt[0], &dt);
916c80e9 2660 if (!q) {
a8f70d72 2661 /* parse datestr as S+ */
916c80e9 2662 dt.tm_sec = strtol(p, (char **)&q, 10);
f9436161
SS
2663 if (q == p)
2664 /* the parsing didn't succeed */
2665 return INT64_MIN;
916c80e9
FB
2666 dt.tm_min = 0;
2667 dt.tm_hour = 0;
c5510dd6
PG
2668 }
2669 }
2670
2671 /* Now we have all the fields that we can get */
2672 if (!q) {
f9436161 2673 return INT64_MIN;
de6d9b64 2674 }
2dbceb9f
PG
2675
2676 if (duration) {
c5510dd6 2677 t = dt.tm_hour * 3600 + dt.tm_min * 60 + dt.tm_sec;
2dbceb9f 2678 } else {
c5510dd6
PG
2679 dt.tm_isdst = -1; /* unknown */
2680 if (is_utc) {
2681 t = mktimegm(&dt);
2682 } else {
2683 t = mktime(&dt);
2684 }
de6d9b64 2685 }
2dbceb9f 2686
c5510dd6
PG
2687 t *= 1000000;
2688
a8f70d72 2689 /* parse the .m... part */
c5510dd6 2690 if (*q == '.') {
de6d9b64 2691 int val, n;
c5510dd6
PG
2692 q++;
2693 for (val = 0, n = 100000; n >= 1; n /= 10, q++) {
115329f1 2694 if (!isdigit(*q))
c5510dd6
PG
2695 break;
2696 val += n * (*q - '0');
de6d9b64
FB
2697 }
2698 t += val;
2699 }
a6a92a9a 2700 return negative ? -t : t;
de6d9b64
FB
2701}
2702
de6d9b64
FB
2703int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
2704{
2705 const char *p;
2706 char tag[128], *q;
2707
2708 p = info;
2709 if (*p == '?')
2710 p++;
2711 for(;;) {
2712 q = tag;
2713 while (*p != '\0' && *p != '=' && *p != '&') {
2714 if ((q - tag) < sizeof(tag) - 1)
2715 *q++ = *p;
2716 p++;
2717 }
2718 *q = '\0';
2719 q = arg;
2720 if (*p == '=') {
2721 p++;
2722 while (*p != '&' && *p != '\0') {
2dbceb9f
PG
2723 if ((q - arg) < arg_size - 1) {
2724 if (*p == '+')
2725 *q++ = ' ';
2726 else
2727 *q++ = *p;
2728 }
de6d9b64
FB
2729 p++;
2730 }
2731 *q = '\0';
2732 }
115329f1 2733 if (!strcmp(tag, tag1))
de6d9b64
FB
2734 return 1;
2735 if (*p != '&')
2736 break;
8d1335ea 2737 p++;
de6d9b64
FB
2738 }
2739 return 0;
2740}
2741
5c07cf53
MB
2742int av_get_frame_filename(char *buf, int buf_size,
2743 const char *path, int number)
9150f42e
FB
2744{
2745 const char *p;
0bf92f79
PI
2746 char *q, buf1[20], c;
2747 int nd, len, percentd_found;
9150f42e
FB
2748
2749 q = buf;
2750 p = path;
2751 percentd_found = 0;
2752 for(;;) {
2753 c = *p++;
2754 if (c == '\0')
2755 break;
2756 if (c == '%') {
c9646fda
PG
2757 do {
2758 nd = 0;
2759 while (isdigit(*p)) {
2760 nd = nd * 10 + *p++ - '0';
2761 }
2762 c = *p++;
c9646fda
PG
2763 } while (isdigit(c));
2764
9150f42e
FB
2765 switch(c) {
2766 case '%':
2767 goto addchar;
2768 case 'd':
2769 if (percentd_found)
2770 goto fail;
2771 percentd_found = 1;
2772 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
2773 len = strlen(buf1);
2774 if ((q - buf + len) > buf_size - 1)
2775 goto fail;
2776 memcpy(q, buf1, len);
2777 q += len;
2778 break;
2779 default:
2780 goto fail;
2781 }
2782 } else {
2783 addchar:
2784 if ((q - buf) < buf_size - 1)
2785 *q++ = c;
2786 }
2787 }
2788 if (!percentd_found)
2789 goto fail;
2790 *q = '\0';
2791 return 0;
2792 fail:
2793 *q = '\0';
2794 return -1;
2795}
2796
750f0e1f 2797static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
b9a281db
FB
2798{
2799 int len, i, j, c;
750f0e1f 2800#define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
b9a281db
FB
2801
2802 for(i=0;i<size;i+=16) {
2803 len = size - i;
2804 if (len > 16)
2805 len = 16;
750f0e1f 2806 PRINT("%08x ", i);
b9a281db
FB
2807 for(j=0;j<16;j++) {
2808 if (j < len)
750f0e1f 2809 PRINT(" %02x", buf[i+j]);
b9a281db 2810 else
750f0e1f 2811 PRINT(" ");
b9a281db 2812 }
750f0e1f 2813 PRINT(" ");
b9a281db
FB
2814 for(j=0;j<len;j++) {
2815 c = buf[i+j];
2816 if (c < ' ' || c > '~')
2817 c = '.';
750f0e1f 2818 PRINT("%c", c);
b9a281db 2819 }
750f0e1f 2820 PRINT("\n");
b9a281db 2821 }
750f0e1f
PI
2822#undef PRINT
2823}
2824
2825void av_hex_dump(FILE *f, uint8_t *buf, int size)
2826{
2827 hex_dump_internal(NULL, f, 0, buf, size);
2828}
2829
2830void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
2831{
2832 hex_dump_internal(avcl, NULL, level, buf, size);
b9a281db
FB
2833}
2834
c0df9d75 2835 //FIXME needs to know the time_base
750f0e1f 2836static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload)
fb2758c8 2837{
750f0e1f
PI
2838#define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
2839 PRINT("stream #%d:\n", pkt->stream_index);
2840 PRINT(" keyframe=%d\n", ((pkt->flags & PKT_FLAG_KEY) != 0));
2841 PRINT(" duration=%0.3f\n", (double)pkt->duration / AV_TIME_BASE);
37353960 2842 /* DTS is _always_ valid after av_read_frame() */
750f0e1f 2843 PRINT(" dts=");
37353960 2844 if (pkt->dts == AV_NOPTS_VALUE)
750f0e1f 2845 PRINT("N/A");
37353960 2846 else
750f0e1f 2847 PRINT("%0.3f", (double)pkt->dts / AV_TIME_BASE);
fb2758c8 2848 /* PTS may be not known if B frames are present */
750f0e1f 2849 PRINT(" pts=");
fb2758c8 2850 if (pkt->pts == AV_NOPTS_VALUE)
750f0e1f 2851 PRINT("N/A");
fb2758c8 2852 else
750f0e1f
PI
2853 PRINT("%0.3f", (double)pkt->pts / AV_TIME_BASE);
2854 PRINT("\n");
2855 PRINT(" size=%d\n", pkt->size);
2856#undef PRINT
fb2758c8
FB
2857 if (dump_payload)
2858 av_hex_dump(f, pkt->data, pkt->size);
2859}
2860
750f0e1f
PI
2861void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
2862{
2863 pkt_dump_internal(NULL, f, 0, pkt, dump_payload);
2864}
2865
2866void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
2867{
2868 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload);
2869}
2870
a9a721da 2871void url_split(char *proto, int proto_size,
6ba5cbc6 2872 char *authorization, int authorization_size,
a9a721da
FB
2873 char *hostname, int hostname_size,
2874 int *port_ptr,
2875 char *path, int path_size,
2876 const char *url)
2877{
f8f88a42 2878 const char *p, *ls, *at, *col, *brk;
7e1e297e
RB
2879
2880 if (port_ptr) *port_ptr = -1;
2881 if (proto_size > 0) proto[0] = 0;
2882 if (authorization_size > 0) authorization[0] = 0;
2883 if (hostname_size > 0) hostname[0] = 0;
2884 if (path_size > 0) path[0] = 0;
2885
2886 /* parse protocol */
2887 if ((p = strchr(url, ':'))) {
2888 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
2889 p++; /* skip ':' */
2890 if (*p == '/') p++;
2891 if (*p == '/') p++;
a9a721da 2892 } else {
7e1e297e
RB
2893 /* no protocol means plain filename */
2894 av_strlcpy(path, url, path_size);
2895 return;
2896 }
6ba5cbc6 2897
7e1e297e
RB
2898 /* separate path from hostname */
2899 if ((ls = strchr(p, '/')))
2900 av_strlcpy(path, ls, path_size);
2901 else
2902 ls = &p[strlen(p)]; // XXX
2903
2904 /* the rest is hostname, use that to parse auth/port */
2905 if (ls != p) {
2906 /* authorization (user[:pass]@hostname) */
2907 if ((at = strchr(p, '@')) && at < ls) {
2908 av_strlcpy(authorization, p,
2909 FFMIN(authorization_size, at + 1 - p));
2910 p = at + 1; /* skip '@' */
a9a721da 2911 }
7e1e297e 2912
f8f88a42
RB
2913 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
2914 /* [host]:port */
2915 av_strlcpy(hostname, p + 1,
2916 FFMIN(hostname_size, brk - p));
2917 if (brk[1] == ':' && port_ptr)
2918 *port_ptr = atoi(brk + 2);
2919 } else if ((col = strchr(p, ':')) && col < ls) {
2920 av_strlcpy(hostname, p,
2921 FFMIN(col + 1 - p, hostname_size));
2922 if (port_ptr) *port_ptr = atoi(col + 1);
2923 } else
2924 av_strlcpy(hostname, p,
2925 FFMIN(ls + 1 - p, hostname_size));
a9a721da 2926 }
a9a721da
FB
2927}
2928
9ee91c2f 2929void av_set_pts_info(AVStream *s, int pts_wrap_bits,
916c80e9
FB
2930 int pts_num, int pts_den)
2931{
2932 s->pts_wrap_bits = pts_wrap_bits;
9ee91c2f
MN
2933 s->time_base.num = pts_num;
2934 s->time_base.den = pts_den;
916c80e9
FB
2935}
2936
2937/* fraction handling */
2938
2939/**
e36bdf8b
DK
2940 * f = val + (num / den) + 0.5.
2941 *
2942 * 'num' is normalized so that it is such as 0 <= num < den.
916c80e9
FB
2943 *
2944 * @param f fractional number
2945 * @param val integer value
2946 * @param num must be >= 0
115329f1 2947 * @param den must be >= 1
916c80e9 2948 */
f3a30e3a 2949static void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den)
916c80e9
FB
2950{
2951 num += (den >> 1);
2952 if (num >= den) {
2953 val += num / den;
2954 num = num % den;
2955 }
2956 f->val = val;
2957 f->num = num;
2958 f->den = den;
2959}
2960
e36bdf8b 2961/**
e36bdf8b 2962 * Fractionnal addition to f: f = f + (incr / f->den).
916c80e9
FB
2963 *
2964 * @param f fractional number
2965 * @param incr increment, can be positive or negative
2966 */
f3a30e3a 2967static void av_frac_add(AVFrac *f, int64_t incr)
916c80e9 2968{
0c1a9eda 2969 int64_t num, den;
916c80e9
FB
2970
2971 num = f->num + incr;
2972 den = f->den;
2973 if (num < 0) {
2974 f->val += num / den;
2975 num = num % den;
2976 if (num < 0) {
2977 num += den;
2978 f->val--;
2979 }
2980 } else if (num >= den) {
2981 f->val += num / den;
2982 num = num % den;
2983 }
2984 f->num = num;
2985}