2 * muxing functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "avio_internal.h"
25 #include "libavcodec/internal.h"
26 #include "libavcodec/bytestream.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/dict.h"
29 #include "libavutil/pixdesc.h"
30 #include "libavutil/timestamp.h"
33 #include "libavutil/avassert.h"
34 #include "libavutil/avstring.h"
35 #include "libavutil/internal.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/time.h"
40 #include "audiointerleave.h"
52 * muxing functions for use within libavformat
55 /* fraction handling */
58 * f = val + (num / den) + 0.5.
60 * 'num' is normalized so that it is such as 0 <= num < den.
62 * @param f fractional number
63 * @param val integer value
64 * @param num must be >= 0
65 * @param den must be >= 1
67 static void frac_init(AVFrac
*f
, int64_t val
, int64_t num
, int64_t den
)
80 * Fractional addition to f: f = f + (incr / f->den).
82 * @param f fractional number
83 * @param incr increment, can be positive or negative
85 static void frac_add(AVFrac
*f
, int64_t incr
)
98 } else if (num
>= den
) {
105 AVRational
ff_choose_timebase(AVFormatContext
*s
, AVStream
*st
, int min_precision
)
112 for (j
=2; j
<14; j
+= 1+(j
>2))
113 while (q
.den
/ q
.num
< min_precision
&& q
.num
% j
== 0)
115 while (q
.den
/ q
.num
< min_precision
&& q
.den
< (1<<24))
121 int avformat_alloc_output_context2(AVFormatContext
**avctx
, AVOutputFormat
*oformat
,
122 const char *format
, const char *filename
)
124 AVFormatContext
*s
= avformat_alloc_context();
133 oformat
= av_guess_format(format
, NULL
, NULL
);
135 av_log(s
, AV_LOG_ERROR
, "Requested output format '%s' is not a suitable output format\n", format
);
136 ret
= AVERROR(EINVAL
);
140 oformat
= av_guess_format(NULL
, filename
, NULL
);
142 ret
= AVERROR(EINVAL
);
143 av_log(s
, AV_LOG_ERROR
, "Unable to find a suitable output format for '%s'\n",
150 s
->oformat
= oformat
;
151 if (s
->oformat
->priv_data_size
> 0) {
152 s
->priv_data
= av_mallocz(s
->oformat
->priv_data_size
);
155 if (s
->oformat
->priv_class
) {
156 *(const AVClass
**)s
->priv_data
= s
->oformat
->priv_class
;
157 av_opt_set_defaults(s
->priv_data
);
163 av_strlcpy(s
->filename
, filename
, sizeof(s
->filename
));
167 av_log(s
, AV_LOG_ERROR
, "Out of memory\n");
168 ret
= AVERROR(ENOMEM
);
170 avformat_free_context(s
);
174 #if FF_API_ALLOC_OUTPUT_CONTEXT
175 AVFormatContext
*avformat_alloc_output_context(const char *format
,
176 AVOutputFormat
*oformat
, const char *filename
)
178 AVFormatContext
*avctx
;
179 int ret
= avformat_alloc_output_context2(&avctx
, oformat
, format
, filename
);
180 return ret
< 0 ? NULL
: avctx
;
184 static int validate_codec_tag(AVFormatContext
*s
, AVStream
*st
)
186 const AVCodecTag
*avctag
;
188 enum AVCodecID id
= AV_CODEC_ID_NONE
;
192 * Check that tag + id is in the table
193 * If neither is in the table -> OK
194 * If tag is in the table with another id -> FAIL
195 * If id is in the table with another tag -> FAIL unless strict < normal
197 for (n
= 0; s
->oformat
->codec_tag
[n
]; n
++) {
198 avctag
= s
->oformat
->codec_tag
[n
];
199 while (avctag
->id
!= AV_CODEC_ID_NONE
) {
200 if (avpriv_toupper4(avctag
->tag
) == avpriv_toupper4(st
->codec
->codec_tag
)) {
202 if (id
== st
->codec
->codec_id
)
205 if (avctag
->id
== st
->codec
->codec_id
)
210 if (id
!= AV_CODEC_ID_NONE
)
212 if (tag
>= 0 && (st
->codec
->strict_std_compliance
>= FF_COMPLIANCE_NORMAL
))
218 static int init_muxer(AVFormatContext
*s
, AVDictionary
**options
)
222 AVDictionary
*tmp
= NULL
;
223 AVCodecContext
*codec
= NULL
;
224 AVOutputFormat
*of
= s
->oformat
;
225 AVDictionaryEntry
*e
;
228 av_dict_copy(&tmp
, *options
, 0);
230 if ((ret
= av_opt_set_dict(s
, &tmp
)) < 0)
232 if (s
->priv_data
&& s
->oformat
->priv_class
&& *(const AVClass
**)s
->priv_data
==s
->oformat
->priv_class
&&
233 (ret
= av_opt_set_dict2(s
->priv_data
, &tmp
, AV_OPT_SEARCH_CHILDREN
)) < 0)
236 #if FF_API_LAVF_BITEXACT
237 if (s
->nb_streams
&& s
->streams
[0]->codec
->flags
& CODEC_FLAG_BITEXACT
)
238 s
->flags
|= AVFMT_FLAG_BITEXACT
;
241 // some sanity checks
242 if (s
->nb_streams
== 0 && !(of
->flags
& AVFMT_NOSTREAMS
)) {
243 av_log(s
, AV_LOG_ERROR
, "No streams to mux were specified\n");
244 ret
= AVERROR(EINVAL
);
248 for (i
= 0; i
< s
->nb_streams
; i
++) {
252 #if FF_API_LAVF_CODEC_TB
253 FF_DISABLE_DEPRECATION_WARNINGS
254 if (!st
->time_base
.num
&& codec
->time_base
.num
) {
255 av_log(s
, AV_LOG_WARNING
, "Using AVStream.codec.time_base as a "
256 "timebase hint to the muxer is deprecated. Set "
257 "AVStream.time_base instead.\n");
258 avpriv_set_pts_info(st
, 64, codec
->time_base
.num
, codec
->time_base
.den
);
260 FF_ENABLE_DEPRECATION_WARNINGS
263 if (!st
->time_base
.num
) {
264 /* fall back on the default timebase values */
265 if (codec
->codec_type
== AVMEDIA_TYPE_AUDIO
&& codec
->sample_rate
)
266 avpriv_set_pts_info(st
, 64, 1, codec
->sample_rate
);
268 avpriv_set_pts_info(st
, 33, 1, 90000);
271 switch (codec
->codec_type
) {
272 case AVMEDIA_TYPE_AUDIO
:
273 if (codec
->sample_rate
<= 0) {
274 av_log(s
, AV_LOG_ERROR
, "sample rate not set\n");
275 ret
= AVERROR(EINVAL
);
278 if (!codec
->block_align
)
279 codec
->block_align
= codec
->channels
*
280 av_get_bits_per_sample(codec
->codec_id
) >> 3;
282 case AVMEDIA_TYPE_VIDEO
:
283 if ((codec
->width
<= 0 || codec
->height
<= 0) &&
284 !(of
->flags
& AVFMT_NODIMENSIONS
)) {
285 av_log(s
, AV_LOG_ERROR
, "dimensions not set\n");
286 ret
= AVERROR(EINVAL
);
289 if (av_cmp_q(st
->sample_aspect_ratio
, codec
->sample_aspect_ratio
)
290 && FFABS(av_q2d(st
->sample_aspect_ratio
) - av_q2d(codec
->sample_aspect_ratio
)) > 0.004*av_q2d(st
->sample_aspect_ratio
)
292 if (st
->sample_aspect_ratio
.num
!= 0 &&
293 st
->sample_aspect_ratio
.den
!= 0 &&
294 codec
->sample_aspect_ratio
.num
!= 0 &&
295 codec
->sample_aspect_ratio
.den
!= 0) {
296 av_log(s
, AV_LOG_ERROR
, "Aspect ratio mismatch between muxer "
297 "(%d/%d) and encoder layer (%d/%d)\n",
298 st
->sample_aspect_ratio
.num
, st
->sample_aspect_ratio
.den
,
299 codec
->sample_aspect_ratio
.num
,
300 codec
->sample_aspect_ratio
.den
);
301 ret
= AVERROR(EINVAL
);
309 if ( codec
->codec_tag
310 && codec
->codec_id
== AV_CODEC_ID_RAWVIDEO
311 && ( av_codec_get_tag(of
->codec_tag
, codec
->codec_id
) == 0
312 || av_codec_get_tag(of
->codec_tag
, codec
->codec_id
) == MKTAG('r', 'a', 'w', ' '))
313 && !validate_codec_tag(s
, st
)) {
314 // the current rawvideo encoding system ends up setting
315 // the wrong codec_tag for avi/mov, we override it here
316 codec
->codec_tag
= 0;
318 if (codec
->codec_tag
) {
319 if (!validate_codec_tag(s
, st
)) {
320 char tagbuf
[32], tagbuf2
[32];
321 av_get_codec_tag_string(tagbuf
, sizeof(tagbuf
), codec
->codec_tag
);
322 av_get_codec_tag_string(tagbuf2
, sizeof(tagbuf2
), av_codec_get_tag(s
->oformat
->codec_tag
, codec
->codec_id
));
323 av_log(s
, AV_LOG_ERROR
,
324 "Tag %s/0x%08x incompatible with output codec id '%d' (%s)\n",
325 tagbuf
, codec
->codec_tag
, codec
->codec_id
, tagbuf2
);
326 ret
= AVERROR_INVALIDDATA
;
330 codec
->codec_tag
= av_codec_get_tag(of
->codec_tag
, codec
->codec_id
);
333 if (of
->flags
& AVFMT_GLOBALHEADER
&&
334 !(codec
->flags
& CODEC_FLAG_GLOBAL_HEADER
))
335 av_log(s
, AV_LOG_WARNING
,
336 "Codec for stream %d does not use global headers "
337 "but container format requires global headers\n", i
);
339 if (codec
->codec_type
!= AVMEDIA_TYPE_ATTACHMENT
)
340 s
->internal
->nb_interleaved_streams
++;
343 if (!s
->priv_data
&& of
->priv_data_size
> 0) {
344 s
->priv_data
= av_mallocz(of
->priv_data_size
);
346 ret
= AVERROR(ENOMEM
);
349 if (of
->priv_class
) {
350 *(const AVClass
**)s
->priv_data
= of
->priv_class
;
351 av_opt_set_defaults(s
->priv_data
);
352 if ((ret
= av_opt_set_dict2(s
->priv_data
, &tmp
, AV_OPT_SEARCH_CHILDREN
)) < 0)
357 /* set muxer identification string */
358 if (!(s
->flags
& AVFMT_FLAG_BITEXACT
)) {
359 av_dict_set(&s
->metadata
, "encoder", LIBAVFORMAT_IDENT
, 0);
361 av_dict_set(&s
->metadata
, "encoder", NULL
, 0);
364 for (e
= NULL
; e
= av_dict_get(s
->metadata
, "encoder-", e
, AV_DICT_IGNORE_SUFFIX
); ) {
365 av_dict_set(&s
->metadata
, e
->key
, NULL
, 0);
369 av_dict_free(options
);
380 static int init_pts(AVFormatContext
*s
)
385 /* init PTS generation */
386 for (i
= 0; i
< s
->nb_streams
; i
++) {
387 int64_t den
= AV_NOPTS_VALUE
;
390 switch (st
->codec
->codec_type
) {
391 case AVMEDIA_TYPE_AUDIO
:
392 den
= (int64_t)st
->time_base
.num
* st
->codec
->sample_rate
;
394 case AVMEDIA_TYPE_VIDEO
:
395 den
= (int64_t)st
->time_base
.num
* st
->codec
->time_base
.den
;
400 if (den
!= AV_NOPTS_VALUE
) {
402 return AVERROR_INVALIDDATA
;
404 frac_init(&st
->pts
, 0, 0, den
);
411 int avformat_write_header(AVFormatContext
*s
, AVDictionary
**options
)
415 if (ret
= init_muxer(s
, options
))
418 if (s
->oformat
->write_header
) {
419 ret
= s
->oformat
->write_header(s
);
420 if (ret
>= 0 && s
->pb
&& s
->pb
->error
< 0)
424 if (s
->flush_packets
&& s
->pb
&& s
->pb
->error
>= 0 && s
->flags
& AVFMT_FLAG_FLUSH_PACKETS
)
428 if ((ret
= init_pts(s
)) < 0)
431 if (s
->avoid_negative_ts
< 0) {
432 if (s
->oformat
->flags
& (AVFMT_TS_NEGATIVE
| AVFMT_NOTIMESTAMPS
)) {
433 s
->avoid_negative_ts
= 0;
435 s
->avoid_negative_ts
= 1;
441 #define AV_PKT_FLAG_UNCODED_FRAME 0x2000
443 /* Note: using sizeof(AVFrame) from outside lavu is unsafe in general, but
444 it is only being used internally to this file as a consistency check.
445 The value is chosen to be very unlikely to appear on its own and to cause
446 immediate failure if used anywhere as a real size. */
447 #define UNCODED_FRAME_PACKET_SIZE (INT_MIN / 3 * 2 + (int)sizeof(AVFrame))
450 //FIXME merge with compute_pkt_fields
451 static int compute_pkt_fields2(AVFormatContext
*s
, AVStream
*st
, AVPacket
*pkt
)
453 int delay
= FFMAX(st
->codec
->has_b_frames
, st
->codec
->max_b_frames
> 0);
457 av_dlog(s
, "compute_pkt_fields2: pts:%s dts:%s cur_dts:%s b:%d size:%d st:%d\n",
458 av_ts2str(pkt
->pts
), av_ts2str(pkt
->dts
), av_ts2str(st
->cur_dts
), delay
, pkt
->size
, pkt
->stream_index
);
460 if (pkt
->duration
< 0 && st
->codec
->codec_type
!= AVMEDIA_TYPE_SUBTITLE
) {
461 av_log(s
, AV_LOG_WARNING
, "Packet with invalid duration %d in stream %d\n",
462 pkt
->duration
, pkt
->stream_index
);
467 if (pkt
->duration
== 0) {
468 ff_compute_frame_duration(&num
, &den
, st
, NULL
, pkt
);
470 pkt
->duration
= av_rescale(1, num
* (int64_t)st
->time_base
.den
* st
->codec
->ticks_per_frame
, den
* (int64_t)st
->time_base
.num
);
474 if (pkt
->pts
== AV_NOPTS_VALUE
&& pkt
->dts
!= AV_NOPTS_VALUE
&& delay
== 0)
477 //XXX/FIXME this is a temporary hack until all encoders output pts
478 if ((pkt
->pts
== 0 || pkt
->pts
== AV_NOPTS_VALUE
) && pkt
->dts
== AV_NOPTS_VALUE
&& !delay
) {
481 av_log(s
, AV_LOG_WARNING
, "Encoder did not produce proper pts, making some up.\n");
485 // pkt->pts= st->cur_dts;
486 pkt
->pts
= st
->pts
.val
;
489 //calculate dts from pts
490 if (pkt
->pts
!= AV_NOPTS_VALUE
&& pkt
->dts
== AV_NOPTS_VALUE
&& delay
<= MAX_REORDER_DELAY
) {
491 st
->pts_buffer
[0] = pkt
->pts
;
492 for (i
= 1; i
< delay
+ 1 && st
->pts_buffer
[i
] == AV_NOPTS_VALUE
; i
++)
493 st
->pts_buffer
[i
] = pkt
->pts
+ (i
- delay
- 1) * pkt
->duration
;
494 for (i
= 0; i
<delay
&& st
->pts_buffer
[i
] > st
->pts_buffer
[i
+ 1]; i
++)
495 FFSWAP(int64_t, st
->pts_buffer
[i
], st
->pts_buffer
[i
+ 1]);
497 pkt
->dts
= st
->pts_buffer
[0];
500 if (st
->cur_dts
&& st
->cur_dts
!= AV_NOPTS_VALUE
&&
501 ((!(s
->oformat
->flags
& AVFMT_TS_NONSTRICT
) &&
502 st
->cur_dts
>= pkt
->dts
) || st
->cur_dts
> pkt
->dts
)) {
503 av_log(s
, AV_LOG_ERROR
,
504 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %s >= %s\n",
505 st
->index
, av_ts2str(st
->cur_dts
), av_ts2str(pkt
->dts
));
506 return AVERROR(EINVAL
);
508 if (pkt
->dts
!= AV_NOPTS_VALUE
&& pkt
->pts
!= AV_NOPTS_VALUE
&& pkt
->pts
< pkt
->dts
) {
509 av_log(s
, AV_LOG_ERROR
, "pts (%s) < dts (%s) in stream %d\n",
510 av_ts2str(pkt
->pts
), av_ts2str(pkt
->dts
), st
->index
);
511 return AVERROR(EINVAL
);
514 av_dlog(s
, "av_write_frame: pts2:%s dts2:%s\n",
515 av_ts2str(pkt
->pts
), av_ts2str(pkt
->dts
));
516 st
->cur_dts
= pkt
->dts
;
517 st
->pts
.val
= pkt
->dts
;
520 switch (st
->codec
->codec_type
) {
521 case AVMEDIA_TYPE_AUDIO
:
522 frame_size
= (pkt
->flags
& AV_PKT_FLAG_UNCODED_FRAME
) ?
523 ((AVFrame
*)pkt
->data
)->nb_samples
:
524 av_get_audio_frame_duration(st
->codec
, pkt
->size
);
526 /* HACK/FIXME, we skip the initial 0 size packets as they are most
527 * likely equal to the encoder delay, but it would be better if we
528 * had the real timestamps from the encoder */
529 if (frame_size
>= 0 && (pkt
->size
|| st
->pts
.num
!= st
->pts
.den
>> 1 || st
->pts
.val
)) {
530 frac_add(&st
->pts
, (int64_t)st
->time_base
.den
* frame_size
);
533 case AVMEDIA_TYPE_VIDEO
:
534 frac_add(&st
->pts
, (int64_t)st
->time_base
.den
* st
->codec
->time_base
.num
);
541 * Make timestamps non negative, move side data from payload to internal struct, call muxer, and restore
544 * FIXME: this function should NEVER get undefined pts/dts beside when the
545 * AVFMT_NOTIMESTAMPS is set.
546 * Those additional safety checks should be dropped once the correct checks
547 * are set in the callers.
549 static int write_packet(AVFormatContext
*s
, AVPacket
*pkt
)
553 if (s
->output_ts_offset
) {
554 AVStream
*st
= s
->streams
[pkt
->stream_index
];
555 int64_t offset
= av_rescale_q(s
->output_ts_offset
, AV_TIME_BASE_Q
, st
->time_base
);
557 if (pkt
->dts
!= AV_NOPTS_VALUE
)
559 if (pkt
->pts
!= AV_NOPTS_VALUE
)
563 if (s
->avoid_negative_ts
> 0) {
564 AVStream
*st
= s
->streams
[pkt
->stream_index
];
565 int64_t offset
= st
->mux_ts_offset
;
567 if ((pkt
->dts
< 0 || s
->avoid_negative_ts
== 2) && pkt
->dts
!= AV_NOPTS_VALUE
&& !s
->offset
) {
568 s
->offset
= -pkt
->dts
;
569 s
->offset_timebase
= st
->time_base
;
572 if (s
->offset
&& !offset
) {
573 offset
= st
->mux_ts_offset
=
574 av_rescale_q_rnd(s
->offset
,
580 if (pkt
->dts
!= AV_NOPTS_VALUE
)
582 if (pkt
->pts
!= AV_NOPTS_VALUE
)
585 av_assert2(pkt
->dts
== AV_NOPTS_VALUE
|| pkt
->dts
>= 0);
588 did_split
= av_packet_split_side_data(pkt
);
589 if ((pkt
->flags
& AV_PKT_FLAG_UNCODED_FRAME
)) {
590 AVFrame
*frame
= (AVFrame
*)pkt
->data
;
591 av_assert0(pkt
->size
== UNCODED_FRAME_PACKET_SIZE
);
592 ret
= s
->oformat
->write_uncoded_frame(s
, pkt
->stream_index
, &frame
, 0);
593 av_frame_free(&frame
);
595 ret
= s
->oformat
->write_packet(s
, pkt
);
598 if (s
->flush_packets
&& s
->pb
&& ret
>= 0 && s
->flags
& AVFMT_FLAG_FLUSH_PACKETS
)
602 av_packet_merge_side_data(pkt
);
607 static int check_packet(AVFormatContext
*s
, AVPacket
*pkt
)
612 if (pkt
->stream_index
< 0 || pkt
->stream_index
>= s
->nb_streams
) {
613 av_log(s
, AV_LOG_ERROR
, "Invalid packet stream index: %d\n",
615 return AVERROR(EINVAL
);
618 if (s
->streams
[pkt
->stream_index
]->codec
->codec_type
== AVMEDIA_TYPE_ATTACHMENT
) {
619 av_log(s
, AV_LOG_ERROR
, "Received a packet for an attachment stream.\n");
620 return AVERROR(EINVAL
);
626 int av_write_frame(AVFormatContext
*s
, AVPacket
*pkt
)
630 ret
= check_packet(s
, pkt
);
635 if (s
->oformat
->flags
& AVFMT_ALLOW_FLUSH
) {
636 ret
= s
->oformat
->write_packet(s
, NULL
);
637 if (s
->flush_packets
&& s
->pb
&& s
->pb
->error
>= 0 && s
->flags
& AVFMT_FLAG_FLUSH_PACKETS
)
639 if (ret
>= 0 && s
->pb
&& s
->pb
->error
< 0)
646 ret
= compute_pkt_fields2(s
, s
->streams
[pkt
->stream_index
], pkt
);
648 if (ret
< 0 && !(s
->oformat
->flags
& AVFMT_NOTIMESTAMPS
))
651 ret
= write_packet(s
, pkt
);
652 if (ret
>= 0 && s
->pb
&& s
->pb
->error
< 0)
656 s
->streams
[pkt
->stream_index
]->nb_frames
++;
660 #define CHUNK_START 0x1000
662 int ff_interleave_add_packet(AVFormatContext
*s
, AVPacket
*pkt
,
663 int (*compare
)(AVFormatContext
*, AVPacket
*, AVPacket
*))
666 AVPacketList
**next_point
, *this_pktl
;
667 AVStream
*st
= s
->streams
[pkt
->stream_index
];
668 int chunked
= s
->max_chunk_size
|| s
->max_chunk_duration
;
670 this_pktl
= av_mallocz(sizeof(AVPacketList
));
672 return AVERROR(ENOMEM
);
673 this_pktl
->pkt
= *pkt
;
674 #if FF_API_DESTRUCT_PACKET
675 FF_DISABLE_DEPRECATION_WARNINGS
676 pkt
->destruct
= NULL
; // do not free original but only the copy
677 FF_ENABLE_DEPRECATION_WARNINGS
680 pkt
->side_data
= NULL
;
681 pkt
->side_data_elems
= 0;
682 if ((pkt
->flags
& AV_PKT_FLAG_UNCODED_FRAME
)) {
683 av_assert0(pkt
->size
== UNCODED_FRAME_PACKET_SIZE
);
684 av_assert0(((AVFrame
*)pkt
->data
)->buf
);
686 // Duplicate the packet if it uses non-allocated memory
687 if ((ret
= av_dup_packet(&this_pktl
->pkt
)) < 0) {
693 if (s
->streams
[pkt
->stream_index
]->last_in_packet_buffer
) {
694 next_point
= &(st
->last_in_packet_buffer
->next
);
696 next_point
= &s
->packet_buffer
;
700 uint64_t max
= av_rescale_q_rnd(s
->max_chunk_duration
, AV_TIME_BASE_Q
, st
->time_base
, AV_ROUND_UP
);
701 st
->interleaver_chunk_size
+= pkt
->size
;
702 st
->interleaver_chunk_duration
+= pkt
->duration
;
703 if ( (s
->max_chunk_size
&& st
->interleaver_chunk_size
> s
->max_chunk_size
)
704 || (max
&& st
->interleaver_chunk_duration
> max
)) {
705 st
->interleaver_chunk_size
= 0;
706 this_pktl
->pkt
.flags
|= CHUNK_START
;
707 if (max
&& st
->interleaver_chunk_duration
> max
) {
708 int64_t syncoffset
= (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
)*max
/2;
709 int64_t syncto
= av_rescale(pkt
->dts
+ syncoffset
, 1, max
)*max
- syncoffset
;
711 st
->interleaver_chunk_duration
+= (pkt
->dts
- syncto
)/8 - max
;
713 st
->interleaver_chunk_duration
= 0;
717 if (chunked
&& !(this_pktl
->pkt
.flags
& CHUNK_START
))
720 if (compare(s
, &s
->packet_buffer_end
->pkt
, pkt
)) {
722 && ((chunked
&& !((*next_point
)->pkt
.flags
&CHUNK_START
))
723 || !compare(s
, &(*next_point
)->pkt
, pkt
)))
724 next_point
= &(*next_point
)->next
;
728 next_point
= &(s
->packet_buffer_end
->next
);
731 av_assert1(!*next_point
);
733 s
->packet_buffer_end
= this_pktl
;
736 this_pktl
->next
= *next_point
;
738 s
->streams
[pkt
->stream_index
]->last_in_packet_buffer
=
739 *next_point
= this_pktl
;
744 static int interleave_compare_dts(AVFormatContext
*s
, AVPacket
*next
,
747 AVStream
*st
= s
->streams
[pkt
->stream_index
];
748 AVStream
*st2
= s
->streams
[next
->stream_index
];
749 int comp
= av_compare_ts(next
->dts
, st2
->time_base
, pkt
->dts
,
751 if (s
->audio_preload
&& ((st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
) != (st2
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
))) {
752 int64_t ts
= av_rescale_q(pkt
->dts
, st
->time_base
, AV_TIME_BASE_Q
) - s
->audio_preload
*(st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
);
753 int64_t ts2
= av_rescale_q(next
->dts
, st2
->time_base
, AV_TIME_BASE_Q
) - s
->audio_preload
*(st2
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
);
755 ts
= ( pkt
->dts
* st
->time_base
.num
*AV_TIME_BASE
- s
->audio_preload
*(int64_t)(st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
)* st
->time_base
.den
)*st2
->time_base
.den
756 -( next
->dts
*st2
->time_base
.num
*AV_TIME_BASE
- s
->audio_preload
*(int64_t)(st2
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
)*st2
->time_base
.den
)* st
->time_base
.den
;
759 comp
= (ts
>ts2
) - (ts
<ts2
);
763 return pkt
->stream_index
< next
->stream_index
;
767 int ff_interleave_packet_per_dts(AVFormatContext
*s
, AVPacket
*out
,
768 AVPacket
*pkt
, int flush
)
771 int stream_count
= 0;
772 int noninterleaved_count
= 0;
776 if ((ret
= ff_interleave_add_packet(s
, pkt
, interleave_compare_dts
)) < 0)
780 for (i
= 0; i
< s
->nb_streams
; i
++) {
781 if (s
->streams
[i
]->last_in_packet_buffer
) {
783 } else if (s
->streams
[i
]->codec
->codec_type
!= AVMEDIA_TYPE_ATTACHMENT
&&
784 s
->streams
[i
]->codec
->codec_id
!= AV_CODEC_ID_VP8
&&
785 s
->streams
[i
]->codec
->codec_id
!= AV_CODEC_ID_VP9
) {
786 ++noninterleaved_count
;
790 if (s
->internal
->nb_interleaved_streams
== stream_count
)
793 if (s
->max_interleave_delta
> 0 &&
796 s
->internal
->nb_interleaved_streams
== stream_count
+noninterleaved_count
798 AVPacket
*top_pkt
= &s
->packet_buffer
->pkt
;
799 int64_t delta_dts
= INT64_MIN
;
800 int64_t top_dts
= av_rescale_q(top_pkt
->dts
,
801 s
->streams
[top_pkt
->stream_index
]->time_base
,
804 for (i
= 0; i
< s
->nb_streams
; i
++) {
806 const AVPacketList
*last
= s
->streams
[i
]->last_in_packet_buffer
;
811 last_dts
= av_rescale_q(last
->pkt
.dts
,
812 s
->streams
[i
]->time_base
,
814 delta_dts
= FFMAX(delta_dts
, last_dts
- top_dts
);
817 if (delta_dts
> s
->max_interleave_delta
) {
818 av_log(s
, AV_LOG_DEBUG
,
819 "Delay between the first packet and last packet in the "
820 "muxing queue is %"PRId64
" > %"PRId64
": forcing output\n",
821 delta_dts
, s
->max_interleave_delta
);
826 if (stream_count
&& flush
) {
828 pktl
= s
->packet_buffer
;
830 st
= s
->streams
[out
->stream_index
];
832 s
->packet_buffer
= pktl
->next
;
833 if (!s
->packet_buffer
)
834 s
->packet_buffer_end
= NULL
;
836 if (st
->last_in_packet_buffer
== pktl
)
837 st
->last_in_packet_buffer
= NULL
;
848 * Interleave an AVPacket correctly so it can be muxed.
849 * @param out the interleaved packet will be output here
850 * @param in the input packet
851 * @param flush 1 if no further packets are available as input and all
852 * remaining packets should be output
853 * @return 1 if a packet was output, 0 if no packet could be output,
854 * < 0 if an error occurred
856 static int interleave_packet(AVFormatContext
*s
, AVPacket
*out
, AVPacket
*in
, int flush
)
858 if (s
->oformat
->interleave_packet
) {
859 int ret
= s
->oformat
->interleave_packet(s
, out
, in
, flush
);
864 return ff_interleave_packet_per_dts(s
, out
, in
, flush
);
867 int av_interleaved_write_frame(AVFormatContext
*s
, AVPacket
*pkt
)
871 ret
= check_packet(s
, pkt
);
876 AVStream
*st
= s
->streams
[pkt
->stream_index
];
878 av_dlog(s
, "av_interleaved_write_frame size:%d dts:%s pts:%s\n",
879 pkt
->size
, av_ts2str(pkt
->dts
), av_ts2str(pkt
->pts
));
880 if ((ret
= compute_pkt_fields2(s
, st
, pkt
)) < 0 && !(s
->oformat
->flags
& AVFMT_NOTIMESTAMPS
))
883 if (pkt
->dts
== AV_NOPTS_VALUE
&& !(s
->oformat
->flags
& AVFMT_NOTIMESTAMPS
)) {
884 ret
= AVERROR(EINVAL
);
888 av_dlog(s
, "av_interleaved_write_frame FLUSH\n");
894 int ret
= interleave_packet(s
, &opkt
, pkt
, flush
);
896 memset(pkt
, 0, sizeof(*pkt
));
900 if (ret
<= 0) //FIXME cleanup needed for ret<0 ?
903 ret
= write_packet(s
, &opkt
);
905 s
->streams
[opkt
.stream_index
]->nb_frames
++;
907 av_free_packet(&opkt
);
911 if(s
->pb
&& s
->pb
->error
)
915 av_packet_unref(pkt
);
919 int av_write_trailer(AVFormatContext
*s
)
925 ret
= interleave_packet(s
, &pkt
, NULL
, 1);
926 if (ret
< 0) //FIXME cleanup needed for ret<0 ?
931 ret
= write_packet(s
, &pkt
);
933 s
->streams
[pkt
.stream_index
]->nb_frames
++;
935 av_free_packet(&pkt
);
939 if(s
->pb
&& s
->pb
->error
)
943 if (s
->oformat
->write_trailer
)
944 ret
= s
->oformat
->write_trailer(s
);
950 ret
= s
->pb
? s
->pb
->error
: 0;
951 for (i
= 0; i
< s
->nb_streams
; i
++) {
952 av_freep(&s
->streams
[i
]->priv_data
);
953 av_freep(&s
->streams
[i
]->index_entries
);
955 if (s
->oformat
->priv_class
)
956 av_opt_free(s
->priv_data
);
957 av_freep(&s
->priv_data
);
961 int av_get_output_timestamp(struct AVFormatContext
*s
, int stream
,
962 int64_t *dts
, int64_t *wall
)
964 if (!s
->oformat
|| !s
->oformat
->get_output_timestamp
)
965 return AVERROR(ENOSYS
);
966 s
->oformat
->get_output_timestamp(s
, stream
, dts
, wall
);
970 int ff_write_chained(AVFormatContext
*dst
, int dst_stream
, AVPacket
*pkt
,
971 AVFormatContext
*src
, int interleave
)
977 local_pkt
.stream_index
= dst_stream
;
978 if (pkt
->pts
!= AV_NOPTS_VALUE
)
979 local_pkt
.pts
= av_rescale_q(pkt
->pts
,
980 src
->streams
[pkt
->stream_index
]->time_base
,
981 dst
->streams
[dst_stream
]->time_base
);
982 if (pkt
->dts
!= AV_NOPTS_VALUE
)
983 local_pkt
.dts
= av_rescale_q(pkt
->dts
,
984 src
->streams
[pkt
->stream_index
]->time_base
,
985 dst
->streams
[dst_stream
]->time_base
);
987 local_pkt
.duration
= av_rescale_q(pkt
->duration
,
988 src
->streams
[pkt
->stream_index
]->time_base
,
989 dst
->streams
[dst_stream
]->time_base
);
991 if (interleave
) ret
= av_interleaved_write_frame(dst
, &local_pkt
);
992 else ret
= av_write_frame(dst
, &local_pkt
);
993 pkt
->buf
= local_pkt
.buf
;
994 pkt
->destruct
= local_pkt
.destruct
;
998 static int av_write_uncoded_frame_internal(AVFormatContext
*s
, int stream_index
,
999 AVFrame
*frame
, int interleaved
)
1001 AVPacket pkt
, *pktp
;
1003 av_assert0(s
->oformat
);
1004 if (!s
->oformat
->write_uncoded_frame
)
1005 return AVERROR(ENOSYS
);
1011 av_init_packet(&pkt
);
1012 pkt
.data
= (void *)frame
;
1013 pkt
.size
= UNCODED_FRAME_PACKET_SIZE
;
1015 pkt
.dts
= frame
->pts
;
1016 pkt
.duration
= av_frame_get_pkt_duration(frame
);
1017 pkt
.stream_index
= stream_index
;
1018 pkt
.flags
|= AV_PKT_FLAG_UNCODED_FRAME
;
1021 return interleaved
? av_interleaved_write_frame(s
, pktp
) :
1022 av_write_frame(s
, pktp
);
1025 int av_write_uncoded_frame(AVFormatContext
*s
, int stream_index
,
1028 return av_write_uncoded_frame_internal(s
, stream_index
, frame
, 0);
1031 int av_interleaved_write_uncoded_frame(AVFormatContext
*s
, int stream_index
,
1034 return av_write_uncoded_frame_internal(s
, stream_index
, frame
, 1);
1037 int av_write_uncoded_frame_query(AVFormatContext
*s
, int stream_index
)
1039 av_assert0(s
->oformat
);
1040 if (!s
->oformat
->write_uncoded_frame
)
1041 return AVERROR(ENOSYS
);
1042 return s
->oformat
->write_uncoded_frame(s
, stream_index
, NULL
,
1043 AV_WRITE_UNCODED_FRAME_QUERY
);