LCOV - code coverage report
Current view: top level - libavformat - mux.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 517 750 68.9 %
Date: 2018-05-20 11:54:08 Functions: 25 30 83.3 %

          Line data    Source code
       1             : /*
       2             :  * muxing functions for use within FFmpeg
       3             :  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       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.
      11             :  *
      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.
      16             :  *
      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
      20             :  */
      21             : 
      22             : #include "avformat.h"
      23             : #include "avio_internal.h"
      24             : #include "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"
      31             : #include "metadata.h"
      32             : #include "id3v2.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"
      39             : #include "riff.h"
      40             : #include "audiointerleave.h"
      41             : #include "url.h"
      42             : #include <stdarg.h>
      43             : #if CONFIG_NETWORK
      44             : #include "network.h"
      45             : #endif
      46             : 
      47             : /**
      48             :  * @file
      49             :  * muxing functions for use within libavformat
      50             :  */
      51             : 
      52             : /* fraction handling */
      53             : 
      54             : /**
      55             :  * f = val + (num / den) + 0.5.
      56             :  *
      57             :  * 'num' is normalized so that it is such as 0 <= num < den.
      58             :  *
      59             :  * @param f fractional number
      60             :  * @param val integer value
      61             :  * @param num must be >= 0
      62             :  * @param den must be >= 1
      63             :  */
      64        5782 : static void frac_init(FFFrac *f, int64_t val, int64_t num, int64_t den)
      65             : {
      66        5782 :     num += (den >> 1);
      67        5782 :     if (num >= den) {
      68           0 :         val += num / den;
      69           0 :         num  = num % den;
      70             :     }
      71        5782 :     f->val = val;
      72        5782 :     f->num = num;
      73        5782 :     f->den = den;
      74        5782 : }
      75             : 
      76             : /**
      77             :  * Fractional addition to f: f = f + (incr / f->den).
      78             :  *
      79             :  * @param f fractional number
      80             :  * @param incr increment, can be positive or negative
      81             :  */
      82      423536 : static void frac_add(FFFrac *f, int64_t incr)
      83             : {
      84             :     int64_t num, den;
      85             : 
      86      423536 :     num = f->num + incr;
      87      423536 :     den = f->den;
      88      423536 :     if (num < 0) {
      89           0 :         f->val += num / den;
      90           0 :         num     = num % den;
      91           0 :         if (num < 0) {
      92           0 :             num += den;
      93           0 :             f->val--;
      94             :         }
      95      423536 :     } else if (num >= den) {
      96      397488 :         f->val += num / den;
      97      397488 :         num     = num % den;
      98             :     }
      99      423536 :     f->num = num;
     100      423536 : }
     101             : 
     102        1918 : AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precision)
     103             : {
     104             :     AVRational q;
     105             :     int j;
     106             : 
     107        1918 :     q = st->time_base;
     108             : 
     109       15344 :     for (j=2; j<14; j+= 1+(j>2))
     110       26971 :         while (q.den / q.num < min_precision && q.num % j == 0)
     111         119 :             q.num /= j;
     112       24903 :     while (q.den / q.num < min_precision && q.den < (1<<24))
     113       21067 :         q.den <<= 1;
     114             : 
     115        1918 :     return q;
     116             : }
     117             : 
     118          10 : enum AVChromaLocation ff_choose_chroma_location(AVFormatContext *s, AVStream *st)
     119             : {
     120          10 :     AVCodecParameters *par = st->codecpar;
     121          10 :     const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(par->format);
     122             : 
     123          10 :     if (par->chroma_location != AVCHROMA_LOC_UNSPECIFIED)
     124           5 :         return par->chroma_location;
     125             : 
     126           5 :     if (pix_desc) {
     127           5 :         if (pix_desc->log2_chroma_h == 0) {
     128           2 :             return AVCHROMA_LOC_TOPLEFT;
     129           3 :         } else if (pix_desc->log2_chroma_w == 1 && pix_desc->log2_chroma_h == 1) {
     130           3 :             if (par->field_order == AV_FIELD_UNKNOWN || par->field_order == AV_FIELD_PROGRESSIVE) {
     131           3 :                 switch (par->codec_id) {
     132           0 :                 case AV_CODEC_ID_MJPEG:
     133           0 :                 case AV_CODEC_ID_MPEG1VIDEO: return AVCHROMA_LOC_CENTER;
     134             :                 }
     135             :             }
     136           3 :             if (par->field_order == AV_FIELD_UNKNOWN || par->field_order != AV_FIELD_PROGRESSIVE) {
     137           0 :                 switch (par->codec_id) {
     138           0 :                 case AV_CODEC_ID_MPEG2VIDEO: return AVCHROMA_LOC_LEFT;
     139             :                 }
     140             :             }
     141             :         }
     142             :     }
     143             : 
     144           3 :     return AVCHROMA_LOC_UNSPECIFIED;
     145             : 
     146             : }
     147             : 
     148        5642 : int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat,
     149             :                                    const char *format, const char *filename)
     150             : {
     151        5642 :     AVFormatContext *s = avformat_alloc_context();
     152        5642 :     int ret = 0;
     153             : 
     154        5642 :     *avctx = NULL;
     155        5642 :     if (!s)
     156           0 :         goto nomem;
     157             : 
     158        5642 :     if (!oformat) {
     159        5622 :         if (format) {
     160        5463 :             oformat = av_guess_format(format, NULL, NULL);
     161        5463 :             if (!oformat) {
     162           0 :                 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
     163           0 :                 ret = AVERROR(EINVAL);
     164           0 :                 goto error;
     165             :             }
     166             :         } else {
     167         159 :             oformat = av_guess_format(NULL, filename, NULL);
     168         159 :             if (!oformat) {
     169           0 :                 ret = AVERROR(EINVAL);
     170           0 :                 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
     171             :                        filename);
     172           0 :                 goto error;
     173             :             }
     174             :         }
     175             :     }
     176             : 
     177        5642 :     s->oformat = oformat;
     178        5642 :     if (s->oformat->priv_data_size > 0) {
     179        3512 :         s->priv_data = av_mallocz(s->oformat->priv_data_size);
     180        3512 :         if (!s->priv_data)
     181           0 :             goto nomem;
     182        3512 :         if (s->oformat->priv_class) {
     183        3286 :             *(const AVClass**)s->priv_data= s->oformat->priv_class;
     184        3286 :             av_opt_set_defaults(s->priv_data);
     185             :         }
     186             :     } else
     187        2130 :         s->priv_data = NULL;
     188             : 
     189        5642 :     if (filename) {
     190             : #if FF_API_FORMAT_FILENAME
     191             : FF_DISABLE_DEPRECATION_WARNINGS
     192        5628 :         av_strlcpy(s->filename, filename, sizeof(s->filename));
     193             : FF_ENABLE_DEPRECATION_WARNINGS
     194             : #endif
     195        5628 :         if (!(s->url = av_strdup(filename)))
     196           0 :             goto nomem;
     197             : 
     198             :     }
     199        5642 :     *avctx = s;
     200        5642 :     return 0;
     201           0 : nomem:
     202           0 :     av_log(s, AV_LOG_ERROR, "Out of memory\n");
     203           0 :     ret = AVERROR(ENOMEM);
     204           0 : error:
     205           0 :     avformat_free_context(s);
     206           0 :     return ret;
     207             : }
     208             : 
     209        1869 : static int validate_codec_tag(AVFormatContext *s, AVStream *st)
     210             : {
     211             :     const AVCodecTag *avctag;
     212             :     int n;
     213        1869 :     enum AVCodecID id = AV_CODEC_ID_NONE;
     214        1869 :     int64_t tag  = -1;
     215             : 
     216             :     /**
     217             :      * Check that tag + id is in the table
     218             :      * If neither is in the table -> OK
     219             :      * If tag is in the table with another id -> FAIL
     220             :      * If id is in the table with another tag -> FAIL unless strict < normal
     221             :      */
     222        2559 :     for (n = 0; s->oformat->codec_tag[n]; n++) {
     223        2530 :         avctag = s->oformat->codec_tag[n];
     224      203804 :         while (avctag->id != AV_CODEC_ID_NONE) {
     225      200584 :             if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codecpar->codec_tag)) {
     226        1840 :                 id = avctag->id;
     227        1840 :                 if (id == st->codecpar->codec_id)
     228        1840 :                     return 1;
     229             :             }
     230      198744 :             if (avctag->id == st->codecpar->codec_id)
     231      137231 :                 tag = avctag->tag;
     232      198744 :             avctag++;
     233             :         }
     234             :     }
     235          29 :     if (id != AV_CODEC_ID_NONE)
     236           0 :         return 0;
     237          29 :     if (tag >= 0 && (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
     238          25 :         return 0;
     239           4 :     return 1;
     240             : }
     241             : 
     242             : 
     243        5716 : static int init_muxer(AVFormatContext *s, AVDictionary **options)
     244             : {
     245        5716 :     int ret = 0, i;
     246             :     AVStream *st;
     247        5716 :     AVDictionary *tmp = NULL;
     248        5716 :     AVCodecParameters *par = NULL;
     249        5716 :     AVOutputFormat *of = s->oformat;
     250             :     const AVCodecDescriptor *desc;
     251             :     AVDictionaryEntry *e;
     252             : 
     253        5716 :     if (options)
     254        5716 :         av_dict_copy(&tmp, *options, 0);
     255             : 
     256        5716 :     if ((ret = av_opt_set_dict(s, &tmp)) < 0)
     257           0 :         goto fail;
     258        9002 :     if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
     259        3286 :         (ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
     260           0 :         goto fail;
     261             : 
     262             : #if FF_API_FORMAT_FILENAME
     263             : FF_DISABLE_DEPRECATION_WARNINGS
     264        5716 :     if (!s->url && !(s->url = av_strdup(s->filename))) {
     265             : FF_ENABLE_DEPRECATION_WARNINGS
     266             : #else
     267             :     if (!s->url && !(s->url = av_strdup(""))) {
     268             : #endif
     269           0 :         ret = AVERROR(ENOMEM);
     270           0 :         goto fail;
     271             :     }
     272             : 
     273             : #if FF_API_LAVF_AVCTX
     274             : FF_DISABLE_DEPRECATION_WARNINGS
     275        5716 :     if (s->nb_streams && s->streams[0]->codec->flags & AV_CODEC_FLAG_BITEXACT) {
     276        4639 :         if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
     277          12 :             av_log(s, AV_LOG_WARNING,
     278             :                    "The AVFormatContext is not in set to bitexact mode, only "
     279             :                    "the AVCodecContext. If this is not intended, set "
     280             :                    "AVFormatContext.flags |= AVFMT_FLAG_BITEXACT.\n");
     281             :         }
     282             :     }
     283             : FF_ENABLE_DEPRECATION_WARNINGS
     284             : #endif
     285             : 
     286             :     // some sanity checks
     287        5716 :     if (s->nb_streams == 0 && !(of->flags & AVFMT_NOSTREAMS)) {
     288           0 :         av_log(s, AV_LOG_ERROR, "No streams to mux were specified\n");
     289           0 :         ret = AVERROR(EINVAL);
     290           0 :         goto fail;
     291             :     }
     292             : 
     293       11598 :     for (i = 0; i < s->nb_streams; i++) {
     294        5882 :         st  = s->streams[i];
     295        5882 :         par = st->codecpar;
     296             : 
     297             : #if FF_API_LAVF_AVCTX
     298             : FF_DISABLE_DEPRECATION_WARNINGS
     299        5935 :         if (st->codecpar->codec_type == AVMEDIA_TYPE_UNKNOWN &&
     300          53 :             st->codec->codec_type    != AVMEDIA_TYPE_UNKNOWN) {
     301           0 :             av_log(s, AV_LOG_WARNING, "Using AVStream.codec to pass codec "
     302             :                    "parameters to muxers is deprecated, use AVStream.codecpar "
     303             :                    "instead.\n");
     304           0 :             ret = avcodec_parameters_from_context(st->codecpar, st->codec);
     305           0 :             if (ret < 0)
     306           0 :                 goto fail;
     307             :         }
     308             : FF_ENABLE_DEPRECATION_WARNINGS
     309             : #endif
     310             : 
     311        5882 :         if (!st->time_base.num) {
     312             :             /* fall back on the default timebase values */
     313           5 :             if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->sample_rate)
     314           0 :                 avpriv_set_pts_info(st, 64, 1, par->sample_rate);
     315             :             else
     316           5 :                 avpriv_set_pts_info(st, 33, 1, 90000);
     317             :         }
     318             : 
     319        5882 :         switch (par->codec_type) {
     320        1202 :         case AVMEDIA_TYPE_AUDIO:
     321        1202 :             if (par->sample_rate <= 0) {
     322           0 :                 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
     323           0 :                 ret = AVERROR(EINVAL);
     324           0 :                 goto fail;
     325             :             }
     326        1202 :             if (!par->block_align)
     327         579 :                 par->block_align = par->channels *
     328         386 :                                    av_get_bits_per_sample(par->codec_id) >> 3;
     329        1202 :             break;
     330        4580 :         case AVMEDIA_TYPE_VIDEO:
     331        4580 :             if ((par->width <= 0 || par->height <= 0) &&
     332           0 :                 !(of->flags & AVFMT_NODIMENSIONS)) {
     333           0 :                 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
     334           0 :                 ret = AVERROR(EINVAL);
     335           0 :                 goto fail;
     336             :             }
     337        4580 :             if (av_cmp_q(st->sample_aspect_ratio, par->sample_aspect_ratio)
     338           0 :                 && fabs(av_q2d(st->sample_aspect_ratio) - av_q2d(par->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
     339             :             ) {
     340           0 :                 if (st->sample_aspect_ratio.num != 0 &&
     341           0 :                     st->sample_aspect_ratio.den != 0 &&
     342           0 :                     par->sample_aspect_ratio.num != 0 &&
     343           0 :                     par->sample_aspect_ratio.den != 0) {
     344           0 :                     av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
     345             :                            "(%d/%d) and encoder layer (%d/%d)\n",
     346             :                            st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
     347             :                            par->sample_aspect_ratio.num,
     348             :                            par->sample_aspect_ratio.den);
     349           0 :                     ret = AVERROR(EINVAL);
     350           0 :                     goto fail;
     351             :                 }
     352             :             }
     353        4580 :             break;
     354             :         }
     355             : 
     356        5882 :         desc = avcodec_descriptor_get(par->codec_id);
     357        5882 :         if (desc && desc->props & AV_CODEC_PROP_REORDER)
     358         251 :             st->internal->reorder = 1;
     359             : 
     360        5882 :         if (of->codec_tag) {
     361        2937 :             if (   par->codec_tag
     362        1865 :                 && par->codec_id == AV_CODEC_ID_RAWVIDEO
     363        1826 :                 && (   av_codec_get_tag(of->codec_tag, par->codec_id) == 0
     364        1809 :                     || av_codec_get_tag(of->codec_tag, par->codec_id) == MKTAG('r', 'a', 'w', ' '))
     365          29 :                 && !validate_codec_tag(s, st)) {
     366             :                 // the current rawvideo encoding system ends up setting
     367             :                 // the wrong codec_tag for avi/mov, we override it here
     368          25 :                 par->codec_tag = 0;
     369             :             }
     370        2937 :             if (par->codec_tag) {
     371        1840 :                 if (!validate_codec_tag(s, st)) {
     372           0 :                     const uint32_t otag = av_codec_get_tag(s->oformat->codec_tag, par->codec_id);
     373           0 :                     av_log(s, AV_LOG_ERROR,
     374             :                            "Tag %s incompatible with output codec id '%d' (%s)\n",
     375           0 :                            av_fourcc2str(par->codec_tag), par->codec_id, av_fourcc2str(otag));
     376           0 :                     ret = AVERROR_INVALIDDATA;
     377           0 :                     goto fail;
     378             :                 }
     379             :             } else
     380        1097 :                 par->codec_tag = av_codec_get_tag(of->codec_tag, par->codec_id);
     381             :         }
     382             : 
     383        5882 :         if (par->codec_type != AVMEDIA_TYPE_ATTACHMENT)
     384        5881 :             s->internal->nb_interleaved_streams++;
     385             :     }
     386             : 
     387        5716 :     if (!s->priv_data && of->priv_data_size > 0) {
     388          74 :         s->priv_data = av_mallocz(of->priv_data_size);
     389          74 :         if (!s->priv_data) {
     390           0 :             ret = AVERROR(ENOMEM);
     391           0 :             goto fail;
     392             :         }
     393          74 :         if (of->priv_class) {
     394          74 :             *(const AVClass **)s->priv_data = of->priv_class;
     395          74 :             av_opt_set_defaults(s->priv_data);
     396          74 :             if ((ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
     397           0 :                 goto fail;
     398             :         }
     399             :     }
     400             : 
     401             :     /* set muxer identification string */
     402        5716 :     if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
     403         945 :         av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
     404             :     } else {
     405        4771 :         av_dict_set(&s->metadata, "encoder", NULL, 0);
     406             :     }
     407             : 
     408       11435 :     for (e = NULL; e = av_dict_get(s->metadata, "encoder-", e, AV_DICT_IGNORE_SUFFIX); ) {
     409           3 :         av_dict_set(&s->metadata, e->key, NULL, 0);
     410             :     }
     411             : 
     412        5716 :     if (options) {
     413        5716 :          av_dict_free(options);
     414        5716 :          *options = tmp;
     415             :     }
     416             : 
     417        5716 :     if (s->oformat->init) {
     418         475 :         if ((ret = s->oformat->init(s)) < 0) {
     419           0 :             if (s->oformat->deinit)
     420           0 :                 s->oformat->deinit(s);
     421           0 :             return ret;
     422             :         }
     423         475 :         return ret == 0;
     424             :     }
     425             : 
     426        5241 :     return 0;
     427             : 
     428           0 : fail:
     429           0 :     av_dict_free(&tmp);
     430           0 :     return ret;
     431             : }
     432             : 
     433        5716 : static int init_pts(AVFormatContext *s)
     434             : {
     435             :     int i;
     436             :     AVStream *st;
     437             : 
     438             :     /* init PTS generation */
     439       11598 :     for (i = 0; i < s->nb_streams; i++) {
     440        5882 :         int64_t den = AV_NOPTS_VALUE;
     441        5882 :         st = s->streams[i];
     442             : 
     443        5882 :         switch (st->codecpar->codec_type) {
     444        1202 :         case AVMEDIA_TYPE_AUDIO:
     445        1202 :             den = (int64_t)st->time_base.num * st->codecpar->sample_rate;
     446        1202 :             break;
     447        4580 :         case AVMEDIA_TYPE_VIDEO:
     448        4580 :             den = (int64_t)st->time_base.num * st->time_base.den;
     449        4580 :             break;
     450         100 :         default:
     451         100 :             break;
     452             :         }
     453             : 
     454        5882 :         if (!st->internal->priv_pts)
     455        5837 :             st->internal->priv_pts = av_mallocz(sizeof(*st->internal->priv_pts));
     456        5882 :         if (!st->internal->priv_pts)
     457           0 :             return AVERROR(ENOMEM);
     458             : 
     459        5882 :         if (den != AV_NOPTS_VALUE) {
     460        5782 :             if (den <= 0)
     461           0 :                 return AVERROR_INVALIDDATA;
     462             : 
     463        5782 :             frac_init(st->internal->priv_pts, 0, 0, den);
     464             :         }
     465             :     }
     466             : 
     467        5716 :     if (s->avoid_negative_ts < 0) {
     468             :         av_assert2(s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO);
     469        3706 :         if (s->oformat->flags & (AVFMT_TS_NEGATIVE | AVFMT_NOTIMESTAMPS)) {
     470        2846 :             s->avoid_negative_ts = 0;
     471             :         } else
     472         860 :             s->avoid_negative_ts = AVFMT_AVOID_NEG_TS_MAKE_NON_NEGATIVE;
     473             :     }
     474             : 
     475        5716 :     return 0;
     476             : }
     477             : 
     478      426374 : static void flush_if_needed(AVFormatContext *s)
     479             : {
     480      426374 :     if (s->pb && s->pb->error >= 0) {
     481      426274 :         if (s->flush_packets == 1 || s->flags & AVFMT_FLAG_FLUSH_PACKETS)
     482           0 :             avio_flush(s->pb);
     483      426274 :         else if (s->flush_packets && !(s->oformat->flags & AVFMT_NOFILE))
     484      426274 :             avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
     485             :     }
     486      426374 : }
     487             : 
     488        5716 : int avformat_init_output(AVFormatContext *s, AVDictionary **options)
     489             : {
     490        5716 :     int ret = 0;
     491             : 
     492        5716 :     if ((ret = init_muxer(s, options)) < 0)
     493           0 :         return ret;
     494             : 
     495        5716 :     s->internal->initialized = 1;
     496        5716 :     s->internal->streams_initialized = ret;
     497             : 
     498        5716 :     if (s->oformat->init && ret) {
     499         211 :         if ((ret = init_pts(s)) < 0)
     500           0 :             return ret;
     501             : 
     502         211 :         return AVSTREAM_INIT_IN_INIT_OUTPUT;
     503             :     }
     504             : 
     505        5505 :     return AVSTREAM_INIT_IN_WRITE_HEADER;
     506             : }
     507             : 
     508        5716 : int avformat_write_header(AVFormatContext *s, AVDictionary **options)
     509             : {
     510        5716 :     int ret = 0;
     511        5716 :     int already_initialized = s->internal->initialized;
     512        5716 :     int streams_already_initialized = s->internal->streams_initialized;
     513             : 
     514        5716 :     if (!already_initialized)
     515        5711 :         if ((ret = avformat_init_output(s, options)) < 0)
     516           0 :             return ret;
     517             : 
     518        5716 :     if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
     519        5618 :         avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_HEADER);
     520        5716 :     if (s->oformat->write_header) {
     521        4951 :         ret = s->oformat->write_header(s);
     522        4951 :         if (ret >= 0 && s->pb && s->pb->error < 0)
     523           0 :             ret = s->pb->error;
     524        4951 :         if (ret < 0)
     525           0 :             goto fail;
     526        4951 :         flush_if_needed(s);
     527             :     }
     528        5716 :     if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
     529        5618 :         avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_UNKNOWN);
     530             : 
     531        5716 :     if (!s->internal->streams_initialized) {
     532        5505 :         if ((ret = init_pts(s)) < 0)
     533           0 :             goto fail;
     534             :     }
     535             : 
     536        5716 :     return streams_already_initialized;
     537             : 
     538           0 : fail:
     539           0 :     if (s->oformat->deinit)
     540           0 :         s->oformat->deinit(s);
     541           0 :     return ret;
     542             : }
     543             : 
     544             : #define AV_PKT_FLAG_UNCODED_FRAME 0x2000
     545             : 
     546             : /* Note: using sizeof(AVFrame) from outside lavu is unsafe in general, but
     547             :    it is only being used internally to this file as a consistency check.
     548             :    The value is chosen to be very unlikely to appear on its own and to cause
     549             :    immediate failure if used anywhere as a real size. */
     550             : #define UNCODED_FRAME_PACKET_SIZE (INT_MIN / 3 * 2 + (int)sizeof(AVFrame))
     551             : 
     552             : 
     553             : #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
     554             : FF_DISABLE_DEPRECATION_WARNINGS
     555             : //FIXME merge with compute_pkt_fields
     556      424877 : static int compute_muxer_pkt_fields(AVFormatContext *s, AVStream *st, AVPacket *pkt)
     557             : {
     558      424877 :     int delay = FFMAX(st->codecpar->video_delay, st->internal->avctx->max_b_frames > 0);
     559             :     int num, den, i;
     560             :     int frame_size;
     561             : 
     562      826120 :     if (!s->internal->missing_ts_warning &&
     563      565242 :         !(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
     564      327998 :         (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC) || (st->disposition & AV_DISPOSITION_TIMED_THUMBNAILS)) &&
     565      327675 :         (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE)) {
     566         321 :         av_log(s, AV_LOG_WARNING,
     567             :                "Timestamps are unset in a packet for stream %d. "
     568             :                "This is deprecated and will stop working in the future. "
     569             :                "Fix your code to set the timestamps properly\n", st->index);
     570         321 :         s->internal->missing_ts_warning = 1;
     571             :     }
     572             : 
     573      424877 :     if (s->debug & FF_FDEBUG_TS)
     574           0 :         av_log(s, AV_LOG_TRACE, "compute_muxer_pkt_fields: pts:%s dts:%s cur_dts:%s b:%d size:%d st:%d\n",
     575           0 :             av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), delay, pkt->size, pkt->stream_index);
     576             : 
     577      424877 :     if (pkt->duration < 0 && st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) {
     578           1 :         av_log(s, AV_LOG_WARNING, "Packet with invalid duration %"PRId64" in stream %d\n",
     579             :                pkt->duration, pkt->stream_index);
     580           1 :         pkt->duration = 0;
     581             :     }
     582             : 
     583             :     /* duration field */
     584      424877 :     if (pkt->duration == 0) {
     585       88706 :         ff_compute_frame_duration(s, &num, &den, st, NULL, pkt);
     586       88706 :         if (den && num) {
     587       87659 :             pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
     588             :         }
     589             :     }
     590             : 
     591      424877 :     if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay == 0)
     592        2153 :         pkt->pts = pkt->dts;
     593             : 
     594             :     //XXX/FIXME this is a temporary hack until all encoders output pts
     595      424877 :     if ((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay) {
     596             :         static int warned;
     597       23328 :         if (!warned) {
     598         311 :             av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
     599         311 :             warned = 1;
     600             :         }
     601       23328 :         pkt->dts =
     602             : //        pkt->pts= st->cur_dts;
     603       23328 :             pkt->pts = st->internal->priv_pts->val;
     604             :     }
     605             : 
     606             :     //calculate dts from pts
     607      424877 :     if (pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
     608           0 :         st->pts_buffer[0] = pkt->pts;
     609           0 :         for (i = 1; i < delay + 1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
     610           0 :             st->pts_buffer[i] = pkt->pts + (i - delay - 1) * pkt->duration;
     611           0 :         for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
     612           0 :             FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
     613             : 
     614           0 :         pkt->dts = st->pts_buffer[0];
     615             :     }
     616             : 
     617      840068 :     if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE &&
     618      695712 :         ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) &&
     619      561031 :           st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE &&
     620      561012 :           st->codecpar->codec_type != AVMEDIA_TYPE_DATA &&
     621      695618 :           st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)) {
     622         225 :         av_log(s, AV_LOG_ERROR,
     623             :                "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %s >= %s\n",
     624         150 :                st->index, av_ts2str(st->cur_dts), av_ts2str(pkt->dts));
     625          75 :         return AVERROR(EINVAL);
     626             :     }
     627      424802 :     if (pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts) {
     628           0 :         av_log(s, AV_LOG_ERROR,
     629             :                "pts (%s) < dts (%s) in stream %d\n",
     630           0 :                av_ts2str(pkt->pts), av_ts2str(pkt->dts),
     631             :                st->index);
     632           0 :         return AVERROR(EINVAL);
     633             :     }
     634             : 
     635      424802 :     if (s->debug & FF_FDEBUG_TS)
     636           0 :         av_log(s, AV_LOG_TRACE, "av_write_frame: pts2:%s dts2:%s\n",
     637           0 :             av_ts2str(pkt->pts), av_ts2str(pkt->dts));
     638             : 
     639      424802 :     st->cur_dts = pkt->dts;
     640      424802 :     st->internal->priv_pts->val = pkt->dts;
     641             : 
     642             :     /* update pts */
     643      424802 :     switch (st->codecpar->codec_type) {
     644      316654 :     case AVMEDIA_TYPE_AUDIO:
     645      633308 :         frame_size = (pkt->flags & AV_PKT_FLAG_UNCODED_FRAME) ?
     646      633308 :                      ((AVFrame *)pkt->data)->nb_samples :
     647      316654 :                      av_get_audio_frame_duration(st->codec, pkt->size);
     648             : 
     649             :         /* HACK/FIXME, we skip the initial 0 size packets as they are most
     650             :          * likely equal to the encoder delay, but it would be better if we
     651             :          * had the real timestamps from the encoder */
     652      316654 :         if (frame_size >= 0 && (pkt->size || st->internal->priv_pts->num != st->internal->priv_pts->den >> 1 || st->internal->priv_pts->val)) {
     653      316654 :             frac_add(st->internal->priv_pts, (int64_t)st->time_base.den * frame_size);
     654             :         }
     655      316654 :         break;
     656      106882 :     case AVMEDIA_TYPE_VIDEO:
     657      106882 :         frac_add(st->internal->priv_pts, (int64_t)st->time_base.den * st->time_base.num);
     658      106882 :         break;
     659             :     }
     660      424802 :     return 0;
     661             : }
     662             : FF_ENABLE_DEPRECATION_WARNINGS
     663             : #endif
     664             : 
     665             : /**
     666             :  * Make timestamps non negative, move side data from payload to internal struct, call muxer, and restore
     667             :  * sidedata.
     668             :  *
     669             :  * FIXME: this function should NEVER get undefined pts/dts beside when the
     670             :  * AVFMT_NOTIMESTAMPS is set.
     671             :  * Those additional safety checks should be dropped once the correct checks
     672             :  * are set in the callers.
     673             :  */
     674      424584 : static int write_packet(AVFormatContext *s, AVPacket *pkt)
     675             : {
     676             :     int ret;
     677             :     int64_t pts_backup, dts_backup;
     678             : 
     679      424584 :     pts_backup = pkt->pts;
     680      424584 :     dts_backup = pkt->dts;
     681             : 
     682             :     // If the timestamp offsetting below is adjusted, adjust
     683             :     // ff_interleaved_peek similarly.
     684      424584 :     if (s->output_ts_offset) {
     685           0 :         AVStream *st = s->streams[pkt->stream_index];
     686           0 :         int64_t offset = av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, st->time_base);
     687             : 
     688           0 :         if (pkt->dts != AV_NOPTS_VALUE)
     689           0 :             pkt->dts += offset;
     690           0 :         if (pkt->pts != AV_NOPTS_VALUE)
     691           0 :             pkt->pts += offset;
     692             :     }
     693             : 
     694      424584 :     if (s->avoid_negative_ts > 0) {
     695       97449 :         AVStream *st = s->streams[pkt->stream_index];
     696       97449 :         int64_t offset = st->mux_ts_offset;
     697       97449 :         int64_t ts = s->internal->avoid_negative_ts_use_pts ? pkt->pts : pkt->dts;
     698             : 
     699       97449 :         if (s->internal->offset == AV_NOPTS_VALUE && ts != AV_NOPTS_VALUE &&
     700       90319 :             (ts < 0 || s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO)) {
     701          56 :             s->internal->offset = -ts;
     702          56 :             s->internal->offset_timebase = st->time_base;
     703             :         }
     704             : 
     705       97449 :         if (s->internal->offset != AV_NOPTS_VALUE && !offset) {
     706        1023 :             offset = st->mux_ts_offset =
     707        1023 :                 av_rescale_q_rnd(s->internal->offset,
     708        1023 :                                  s->internal->offset_timebase,
     709             :                                  st->time_base,
     710             :                                  AV_ROUND_UP);
     711             :         }
     712             : 
     713       97449 :         if (pkt->dts != AV_NOPTS_VALUE)
     714       97449 :             pkt->dts += offset;
     715       97449 :         if (pkt->pts != AV_NOPTS_VALUE)
     716       97358 :             pkt->pts += offset;
     717             : 
     718       97449 :         if (s->internal->avoid_negative_ts_use_pts) {
     719         327 :             if (pkt->pts != AV_NOPTS_VALUE && pkt->pts < 0) {
     720           0 :                 av_log(s, AV_LOG_WARNING, "failed to avoid negative "
     721             :                     "pts %s in stream %d.\n"
     722             :                     "Try -avoid_negative_ts 1 as a possible workaround.\n",
     723           0 :                     av_ts2str(pkt->pts),
     724             :                     pkt->stream_index
     725             :                 );
     726             :             }
     727             :         } else {
     728             :             av_assert2(pkt->dts == AV_NOPTS_VALUE || pkt->dts >= 0 || s->max_interleave_delta > 0);
     729       97122 :             if (pkt->dts != AV_NOPTS_VALUE && pkt->dts < 0) {
     730           0 :                 av_log(s, AV_LOG_WARNING,
     731             :                     "Packets poorly interleaved, failed to avoid negative "
     732             :                     "timestamp %s in stream %d.\n"
     733             :                     "Try -max_interleave_delta 0 as a possible workaround.\n",
     734           0 :                     av_ts2str(pkt->dts),
     735             :                     pkt->stream_index
     736             :                 );
     737             :             }
     738             :         }
     739             :     }
     740             : 
     741      424584 :     if ((pkt->flags & AV_PKT_FLAG_UNCODED_FRAME)) {
     742           0 :         AVFrame *frame = (AVFrame *)pkt->data;
     743           0 :         av_assert0(pkt->size == UNCODED_FRAME_PACKET_SIZE);
     744           0 :         ret = s->oformat->write_uncoded_frame(s, pkt->stream_index, &frame, 0);
     745           0 :         av_frame_free(&frame);
     746             :     } else {
     747      424584 :         ret = s->oformat->write_packet(s, pkt);
     748             :     }
     749             : 
     750      424584 :     if (s->pb && ret >= 0) {
     751      421375 :         flush_if_needed(s);
     752      421375 :         if (s->pb->error < 0)
     753           0 :             ret = s->pb->error;
     754             :     }
     755             : 
     756      424584 :     if (ret < 0) {
     757          45 :         pkt->pts = pts_backup;
     758          45 :         pkt->dts = dts_backup;
     759             :     }
     760             : 
     761      424584 :     return ret;
     762             : }
     763             : 
     764      424925 : static int check_packet(AVFormatContext *s, AVPacket *pkt)
     765             : {
     766      424925 :     if (!pkt)
     767          48 :         return 0;
     768             : 
     769      424877 :     if (pkt->stream_index < 0 || pkt->stream_index >= s->nb_streams) {
     770           0 :         av_log(s, AV_LOG_ERROR, "Invalid packet stream index: %d\n",
     771             :                pkt->stream_index);
     772           0 :         return AVERROR(EINVAL);
     773             :     }
     774             : 
     775      424877 :     if (s->streams[pkt->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
     776           0 :         av_log(s, AV_LOG_ERROR, "Received a packet for an attachment stream.\n");
     777           0 :         return AVERROR(EINVAL);
     778             :     }
     779             : 
     780      424877 :     return 0;
     781             : }
     782             : 
     783      424925 : static int prepare_input_packet(AVFormatContext *s, AVPacket *pkt)
     784             : {
     785             :     int ret;
     786             : 
     787      424925 :     ret = check_packet(s, pkt);
     788      424925 :     if (ret < 0)
     789           0 :         return ret;
     790             : 
     791             : #if !FF_API_COMPUTE_PKT_FIELDS2 || !FF_API_LAVF_AVCTX
     792             :     /* sanitize the timestamps */
     793             :     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
     794             :         AVStream *st = s->streams[pkt->stream_index];
     795             : 
     796             :         /* when there is no reordering (so dts is equal to pts), but
     797             :          * only one of them is set, set the other as well */
     798             :         if (!st->internal->reorder) {
     799             :             if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE)
     800             :                 pkt->pts = pkt->dts;
     801             :             if (pkt->dts == AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
     802             :                 pkt->dts = pkt->pts;
     803             :         }
     804             : 
     805             :         /* check that the timestamps are set */
     806             :         if (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE) {
     807             :             av_log(s, AV_LOG_ERROR,
     808             :                    "Timestamps are unset in a packet for stream %d\n", st->index);
     809             :             return AVERROR(EINVAL);
     810             :         }
     811             : 
     812             :         /* check that the dts are increasing (or at least non-decreasing,
     813             :          * if the format allows it */
     814             :         if (st->cur_dts != AV_NOPTS_VALUE &&
     815             :             ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) && st->cur_dts >= pkt->dts) ||
     816             :              st->cur_dts > pkt->dts)) {
     817             :             av_log(s, AV_LOG_ERROR,
     818             :                    "Application provided invalid, non monotonically increasing "
     819             :                    "dts to muxer in stream %d: %" PRId64 " >= %" PRId64 "\n",
     820             :                    st->index, st->cur_dts, pkt->dts);
     821             :             return AVERROR(EINVAL);
     822             :         }
     823             : 
     824             :         if (pkt->pts < pkt->dts) {
     825             :             av_log(s, AV_LOG_ERROR, "pts %" PRId64 " < dts %" PRId64 " in stream %d\n",
     826             :                    pkt->pts, pkt->dts, st->index);
     827             :             return AVERROR(EINVAL);
     828             :         }
     829             :     }
     830             : #endif
     831             : 
     832      424925 :     return 0;
     833             : }
     834             : 
     835      424877 : static int do_packet_auto_bsf(AVFormatContext *s, AVPacket *pkt) {
     836      424877 :     AVStream *st = s->streams[pkt->stream_index];
     837             :     int i, ret;
     838             : 
     839      424877 :     if (!(s->flags & AVFMT_FLAG_AUTO_BSF))
     840        5939 :         return 1;
     841             : 
     842      418938 :     if (s->oformat->check_bitstream) {
     843       17026 :         if (!st->internal->bitstream_checked) {
     844         212 :             if ((ret = s->oformat->check_bitstream(s, pkt)) < 0)
     845           0 :                 return ret;
     846         212 :             else if (ret == 1)
     847         212 :                 st->internal->bitstream_checked = 1;
     848             :         }
     849             :     }
     850             : 
     851      419518 :     for (i = 0; i < st->internal->nb_bsfcs; i++) {
     852         580 :         AVBSFContext *ctx = st->internal->bsfcs[i];
     853             :         // TODO: when any bitstream filter requires flushing at EOF, we'll need to
     854             :         // flush each stream's BSF chain on write_trailer.
     855         580 :         if ((ret = av_bsf_send_packet(ctx, pkt)) < 0) {
     856           0 :             av_log(ctx, AV_LOG_ERROR,
     857             :                     "Failed to send packet to filter %s for stream %d\n",
     858           0 :                     ctx->filter->name, pkt->stream_index);
     859           0 :             return ret;
     860             :         }
     861             :         // TODO: when any automatically-added bitstream filter is generating multiple
     862             :         // output packets for a single input one, we'll need to call this in a loop
     863             :         // and write each output packet.
     864         580 :         if ((ret = av_bsf_receive_packet(ctx, pkt)) < 0) {
     865           0 :             if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
     866           0 :                 return 0;
     867           0 :             av_log(ctx, AV_LOG_ERROR,
     868             :                     "Failed to send packet to filter %s for stream %d\n",
     869           0 :                     ctx->filter->name, pkt->stream_index);
     870           0 :             if (s->error_recognition & AV_EF_EXPLODE)
     871           0 :                 return ret;
     872           0 :             return 0;
     873             :         }
     874             :     }
     875      418938 :     return 1;
     876             : }
     877             : 
     878        7273 : int av_write_frame(AVFormatContext *s, AVPacket *pkt)
     879             : {
     880             :     int ret;
     881             : 
     882        7273 :     ret = prepare_input_packet(s, pkt);
     883        7273 :     if (ret < 0)
     884           0 :         return ret;
     885             : 
     886        7273 :     if (!pkt) {
     887          48 :         if (s->oformat->flags & AVFMT_ALLOW_FLUSH) {
     888          48 :             ret = s->oformat->write_packet(s, NULL);
     889          48 :             flush_if_needed(s);
     890          48 :             if (ret >= 0 && s->pb && s->pb->error < 0)
     891           0 :                 ret = s->pb->error;
     892          48 :             return ret;
     893             :         }
     894           0 :         return 1;
     895             :     }
     896             : 
     897        7225 :     ret = do_packet_auto_bsf(s, pkt);
     898        7225 :     if (ret <= 0)
     899           0 :         return ret;
     900             : 
     901             : #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
     902        7225 :     ret = compute_muxer_pkt_fields(s, s->streams[pkt->stream_index], pkt);
     903             : 
     904        7225 :     if (ret < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
     905           0 :         return ret;
     906             : #endif
     907             : 
     908        7225 :     ret = write_packet(s, pkt);
     909        7225 :     if (ret >= 0 && s->pb && s->pb->error < 0)
     910           0 :         ret = s->pb->error;
     911             : 
     912        7225 :     if (ret >= 0)
     913        7180 :         s->streams[pkt->stream_index]->nb_frames++;
     914        7225 :     return ret;
     915             : }
     916             : 
     917             : #define CHUNK_START 0x1000
     918             : 
     919      417372 : int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
     920             :                              int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
     921             : {
     922             :     int ret;
     923             :     AVPacketList **next_point, *this_pktl;
     924      417372 :     AVStream *st   = s->streams[pkt->stream_index];
     925      417372 :     int chunked    = s->max_chunk_size || s->max_chunk_duration;
     926             : 
     927      417372 :     this_pktl      = av_mallocz(sizeof(AVPacketList));
     928      417372 :     if (!this_pktl)
     929           0 :         return AVERROR(ENOMEM);
     930      417372 :     if ((pkt->flags & AV_PKT_FLAG_UNCODED_FRAME)) {
     931           0 :         av_assert0(pkt->size == UNCODED_FRAME_PACKET_SIZE);
     932           0 :         av_assert0(((AVFrame *)pkt->data)->buf);
     933           0 :         this_pktl->pkt = *pkt;
     934           0 :         pkt->buf = NULL;
     935           0 :         pkt->side_data = NULL;
     936           0 :         pkt->side_data_elems = 0;
     937             :     } else {
     938      417372 :         if ((ret = av_packet_ref(&this_pktl->pkt, pkt)) < 0) {
     939           0 :             av_free(this_pktl);
     940           0 :             return ret;
     941             :         }
     942             :     }
     943             : 
     944      417372 :     if (s->streams[pkt->stream_index]->last_in_packet_buffer) {
     945        5507 :         next_point = &(st->last_in_packet_buffer->next);
     946             :     } else {
     947      411865 :         next_point = &s->internal->packet_buffer;
     948             :     }
     949             : 
     950      417372 :     if (chunked) {
     951           0 :         uint64_t max= av_rescale_q_rnd(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base, AV_ROUND_UP);
     952           0 :         st->interleaver_chunk_size     += pkt->size;
     953           0 :         st->interleaver_chunk_duration += pkt->duration;
     954           0 :         if (   (s->max_chunk_size && st->interleaver_chunk_size > s->max_chunk_size)
     955           0 :             || (max && st->interleaver_chunk_duration           > max)) {
     956           0 :             st->interleaver_chunk_size      = 0;
     957           0 :             this_pktl->pkt.flags |= CHUNK_START;
     958           0 :             if (max && st->interleaver_chunk_duration > max) {
     959           0 :                 int64_t syncoffset = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)*max/2;
     960           0 :                 int64_t syncto = av_rescale(pkt->dts + syncoffset, 1, max)*max - syncoffset;
     961             : 
     962           0 :                 st->interleaver_chunk_duration += (pkt->dts - syncto)/8 - max;
     963             :             } else
     964           0 :                 st->interleaver_chunk_duration = 0;
     965             :         }
     966             :     }
     967      417372 :     if (*next_point) {
     968        7698 :         if (chunked && !(this_pktl->pkt.flags & CHUNK_START))
     969           0 :             goto next_non_null;
     970             : 
     971        7698 :         if (compare(s, &s->internal->packet_buffer_end->pkt, pkt)) {
     972        9356 :             while (   *next_point
     973        6420 :                    && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
     974        6420 :                        || !compare(s, &(*next_point)->pkt, pkt)))
     975        3484 :                 next_point = &(*next_point)->next;
     976        2936 :             if (*next_point)
     977        2936 :                 goto next_non_null;
     978             :         } else {
     979        4762 :             next_point = &(s->internal->packet_buffer_end->next);
     980             :         }
     981             :     }
     982             :     av_assert1(!*next_point);
     983             : 
     984      414436 :     s->internal->packet_buffer_end = this_pktl;
     985      417372 : next_non_null:
     986             : 
     987      417372 :     this_pktl->next = *next_point;
     988             : 
     989      834744 :     s->streams[pkt->stream_index]->last_in_packet_buffer =
     990      834744 :         *next_point                                      = this_pktl;
     991             : 
     992      417372 :     av_packet_unref(pkt);
     993             : 
     994      417372 :     return 0;
     995             : }
     996             : 
     997       13539 : static int interleave_compare_dts(AVFormatContext *s, AVPacket *next,
     998             :                                   AVPacket *pkt)
     999             : {
    1000       13539 :     AVStream *st  = s->streams[pkt->stream_index];
    1001       13539 :     AVStream *st2 = s->streams[next->stream_index];
    1002       13539 :     int comp      = av_compare_ts(next->dts, st2->time_base, pkt->dts,
    1003             :                                   st->time_base);
    1004       13539 :     if (s->audio_preload && ((st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) != (st2->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))) {
    1005           0 :         int64_t ts = av_rescale_q(pkt ->dts, st ->time_base, AV_TIME_BASE_Q) - s->audio_preload*(st ->codecpar->codec_type == AVMEDIA_TYPE_AUDIO);
    1006           0 :         int64_t ts2= av_rescale_q(next->dts, st2->time_base, AV_TIME_BASE_Q) - s->audio_preload*(st2->codecpar->codec_type == AVMEDIA_TYPE_AUDIO);
    1007           0 :         if (ts == ts2) {
    1008           0 :             ts= ( pkt ->dts* st->time_base.num*AV_TIME_BASE - s->audio_preload*(int64_t)(st ->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)* st->time_base.den)*st2->time_base.den
    1009           0 :                -( next->dts*st2->time_base.num*AV_TIME_BASE - s->audio_preload*(int64_t)(st2->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)*st2->time_base.den)* st->time_base.den;
    1010           0 :             ts2=0;
    1011             :         }
    1012           0 :         comp= (ts>ts2) - (ts<ts2);
    1013             :     }
    1014             : 
    1015       13539 :     if (comp == 0)
    1016        1145 :         return pkt->stream_index < next->stream_index;
    1017       12394 :     return comp > 0;
    1018             : }
    1019             : 
    1020      839742 : int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
    1021             :                                  AVPacket *pkt, int flush)
    1022             : {
    1023             :     AVPacketList *pktl;
    1024      839742 :     int stream_count = 0;
    1025      839742 :     int noninterleaved_count = 0;
    1026             :     int i, ret;
    1027      839742 :     int eof = flush;
    1028             : 
    1029      839742 :     if (pkt) {
    1030      416868 :         if ((ret = ff_interleave_add_packet(s, pkt, interleave_compare_dts)) < 0)
    1031           0 :             return ret;
    1032             :     }
    1033             : 
    1034     1705925 :     for (i = 0; i < s->nb_streams; i++) {
    1035      866183 :         if (s->streams[i]->last_in_packet_buffer) {
    1036      442419 :             ++stream_count;
    1037      847399 :         } else if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT &&
    1038      846707 :                    s->streams[i]->codecpar->codec_id != AV_CODEC_ID_VP8 &&
    1039      423072 :                    s->streams[i]->codecpar->codec_id != AV_CODEC_ID_VP9) {
    1040      422822 :             ++noninterleaved_count;
    1041             :         }
    1042             :     }
    1043             : 
    1044      839742 :     if (s->internal->nb_interleaved_streams == stream_count)
    1045      416324 :         flush = 1;
    1046             : 
    1047     1678533 :     if (s->max_interleave_delta > 0 &&
    1048     1268287 :         s->internal->packet_buffer &&
    1049       13037 :         !flush &&
    1050       13037 :         s->internal->nb_interleaved_streams == stream_count+noninterleaved_count
    1051             :     ) {
    1052       12680 :         AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
    1053       12680 :         int64_t delta_dts = INT64_MIN;
    1054       12680 :         int64_t top_dts = av_rescale_q(top_pkt->dts,
    1055       12680 :                                        s->streams[top_pkt->stream_index]->time_base,
    1056       12680 :                                        AV_TIME_BASE_Q);
    1057             : 
    1058       38163 :         for (i = 0; i < s->nb_streams; i++) {
    1059             :             int64_t last_dts;
    1060       25483 :             const AVPacketList *last = s->streams[i]->last_in_packet_buffer;
    1061             : 
    1062       25483 :             if (!last)
    1063       12777 :                 continue;
    1064             : 
    1065       12706 :             last_dts = av_rescale_q(last->pkt.dts,
    1066       12706 :                                     s->streams[i]->time_base,
    1067       12706 :                                     AV_TIME_BASE_Q);
    1068       12706 :             delta_dts = FFMAX(delta_dts, last_dts - top_dts);
    1069             :         }
    1070             : 
    1071       12680 :         if (delta_dts > s->max_interleave_delta) {
    1072          21 :             av_log(s, AV_LOG_DEBUG,
    1073             :                    "Delay between the first packet and last packet in the "
    1074             :                    "muxing queue is %"PRId64" > %"PRId64": forcing output\n",
    1075             :                    delta_dts, s->max_interleave_delta);
    1076          21 :             flush = 1;
    1077             :         }
    1078             :     }
    1079             : 
    1080      839742 :     if (s->internal->packet_buffer &&
    1081         667 :         eof &&
    1082         667 :         (s->flags & AVFMT_FLAG_SHORTEST) &&
    1083           0 :         s->internal->shortest_end == AV_NOPTS_VALUE) {
    1084           0 :         AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
    1085             : 
    1086           0 :         s->internal->shortest_end = av_rescale_q(top_pkt->dts,
    1087           0 :                                        s->streams[top_pkt->stream_index]->time_base,
    1088           0 :                                        AV_TIME_BASE_Q);
    1089             :     }
    1090             : 
    1091      839742 :     if (s->internal->shortest_end != AV_NOPTS_VALUE) {
    1092           0 :         while (s->internal->packet_buffer) {
    1093           0 :             AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
    1094             :             AVStream *st;
    1095           0 :             int64_t top_dts = av_rescale_q(top_pkt->dts,
    1096           0 :                                         s->streams[top_pkt->stream_index]->time_base,
    1097           0 :                                         AV_TIME_BASE_Q);
    1098             : 
    1099           0 :             if (s->internal->shortest_end + 1 >= top_dts)
    1100           0 :                 break;
    1101             : 
    1102           0 :             pktl = s->internal->packet_buffer;
    1103           0 :             st   = s->streams[pktl->pkt.stream_index];
    1104             : 
    1105           0 :             s->internal->packet_buffer = pktl->next;
    1106           0 :             if (!s->internal->packet_buffer)
    1107           0 :                 s->internal->packet_buffer_end = NULL;
    1108             : 
    1109           0 :             if (st->last_in_packet_buffer == pktl)
    1110           0 :                 st->last_in_packet_buffer = NULL;
    1111             : 
    1112           0 :             av_packet_unref(&pktl->pkt);
    1113           0 :             av_freep(&pktl);
    1114           0 :             flush = 0;
    1115             :         }
    1116             :     }
    1117             : 
    1118      839742 :     if (stream_count && flush) {
    1119             :         AVStream *st;
    1120      416954 :         pktl = s->internal->packet_buffer;
    1121      416954 :         *out = pktl->pkt;
    1122      416954 :         st   = s->streams[out->stream_index];
    1123             : 
    1124      416954 :         s->internal->packet_buffer = pktl->next;
    1125      416954 :         if (!s->internal->packet_buffer)
    1126      404115 :             s->internal->packet_buffer_end = NULL;
    1127             : 
    1128      416954 :         if (st->last_in_packet_buffer == pktl)
    1129      411626 :             st->last_in_packet_buffer = NULL;
    1130      416954 :         av_freep(&pktl);
    1131             : 
    1132      416954 :         return 1;
    1133             :     } else {
    1134      422788 :         av_init_packet(out);
    1135      422788 :         return 0;
    1136             :     }
    1137             : }
    1138             : 
    1139         136 : int ff_interleaved_peek(AVFormatContext *s, int stream,
    1140             :                         AVPacket *pkt, int add_offset)
    1141             : {
    1142         136 :     AVPacketList *pktl = s->internal->packet_buffer;
    1143         288 :     while (pktl) {
    1144          21 :         if (pktl->pkt.stream_index == stream) {
    1145           5 :             *pkt = pktl->pkt;
    1146           5 :             if (add_offset) {
    1147           5 :                 AVStream *st = s->streams[pkt->stream_index];
    1148           5 :                 int64_t offset = st->mux_ts_offset;
    1149             : 
    1150           5 :                 if (s->output_ts_offset)
    1151           0 :                     offset += av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, st->time_base);
    1152             : 
    1153           5 :                 if (pkt->dts != AV_NOPTS_VALUE)
    1154           5 :                     pkt->dts += offset;
    1155           5 :                 if (pkt->pts != AV_NOPTS_VALUE)
    1156           5 :                     pkt->pts += offset;
    1157             :             }
    1158           5 :             return 0;
    1159             :         }
    1160          16 :         pktl = pktl->next;
    1161             :     }
    1162         131 :     return AVERROR(ENOENT);
    1163             : }
    1164             : 
    1165             : /**
    1166             :  * Interleave an AVPacket correctly so it can be muxed.
    1167             :  * @param out the interleaved packet will be output here
    1168             :  * @param in the input packet
    1169             :  * @param flush 1 if no further packets are available as input and all
    1170             :  *              remaining packets should be output
    1171             :  * @return 1 if a packet was output, 0 if no packet could be output,
    1172             :  *         < 0 if an error occurred
    1173             :  */
    1174      840727 : static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush)
    1175             : {
    1176      840727 :     if (s->oformat->interleave_packet) {
    1177        1289 :         int ret = s->oformat->interleave_packet(s, out, in, flush);
    1178        1289 :         if (in)
    1179         784 :             av_packet_unref(in);
    1180        1289 :         return ret;
    1181             :     } else
    1182      839438 :         return ff_interleave_packet_per_dts(s, out, in, flush);
    1183             : }
    1184             : 
    1185      417652 : int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
    1186             : {
    1187      417652 :     int ret, flush = 0;
    1188             : 
    1189      417652 :     ret = prepare_input_packet(s, pkt);
    1190      417652 :     if (ret < 0)
    1191           0 :         goto fail;
    1192             : 
    1193      417652 :     if (pkt) {
    1194      417652 :         AVStream *st = s->streams[pkt->stream_index];
    1195             : 
    1196      417652 :         ret = do_packet_auto_bsf(s, pkt);
    1197      417652 :         if (ret == 0)
    1198           0 :             return 0;
    1199      417652 :         else if (ret < 0)
    1200           0 :             goto fail;
    1201             : 
    1202      417652 :         if (s->debug & FF_FDEBUG_TS)
    1203           0 :             av_log(s, AV_LOG_TRACE, "av_interleaved_write_frame size:%d dts:%s pts:%s\n",
    1204           0 :                 pkt->size, av_ts2str(pkt->dts), av_ts2str(pkt->pts));
    1205             : 
    1206             : #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
    1207      417652 :         if ((ret = compute_muxer_pkt_fields(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
    1208           0 :             goto fail;
    1209             : #endif
    1210             : 
    1211      417652 :         if (pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
    1212           0 :             ret = AVERROR(EINVAL);
    1213           0 :             goto fail;
    1214             :         }
    1215             :     } else {
    1216           0 :         av_log(s, AV_LOG_TRACE, "av_interleaved_write_frame FLUSH\n");
    1217           0 :         flush = 1;
    1218             :     }
    1219             : 
    1220      416676 :     for (;; ) {
    1221             :         AVPacket opkt;
    1222      834328 :         int ret = interleave_packet(s, &opkt, pkt, flush);
    1223      834328 :         if (pkt) {
    1224      417652 :             memset(pkt, 0, sizeof(*pkt));
    1225      417652 :             av_init_packet(pkt);
    1226      417652 :             pkt = NULL;
    1227             :         }
    1228      834328 :         if (ret <= 0) //FIXME cleanup needed for ret<0 ?
    1229      835304 :             return ret;
    1230             : 
    1231      416676 :         ret = write_packet(s, &opkt);
    1232      416676 :         if (ret >= 0)
    1233      416676 :             s->streams[opkt.stream_index]->nb_frames++;
    1234             : 
    1235      416676 :         av_packet_unref(&opkt);
    1236             : 
    1237      416676 :         if (ret < 0)
    1238           0 :             return ret;
    1239      416676 :         if(s->pb && s->pb->error)
    1240           0 :             return s->pb->error;
    1241             :     }
    1242           0 : fail:
    1243           0 :     av_packet_unref(pkt);
    1244           0 :     return ret;
    1245             : }
    1246             : 
    1247        6399 : int av_write_trailer(AVFormatContext *s)
    1248             : {
    1249             :     int ret, i;
    1250             : 
    1251         683 :     for (;; ) {
    1252             :         AVPacket pkt;
    1253        6399 :         ret = interleave_packet(s, &pkt, NULL, 1);
    1254        6399 :         if (ret < 0)
    1255           0 :             goto fail;
    1256        6399 :         if (!ret)
    1257        5716 :             break;
    1258             : 
    1259         683 :         ret = write_packet(s, &pkt);
    1260         683 :         if (ret >= 0)
    1261         683 :             s->streams[pkt.stream_index]->nb_frames++;
    1262             : 
    1263         683 :         av_packet_unref(&pkt);
    1264             : 
    1265         683 :         if (ret < 0)
    1266           0 :             goto fail;
    1267         683 :         if(s->pb && s->pb->error)
    1268           0 :             goto fail;
    1269             :     }
    1270             : 
    1271        5716 : fail:
    1272        5716 :     if (s->oformat->write_trailer) {
    1273        3538 :         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
    1274        3477 :             avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_TRAILER);
    1275        3538 :         if (ret >= 0) {
    1276        3538 :         ret = s->oformat->write_trailer(s);
    1277             :         } else {
    1278           0 :             s->oformat->write_trailer(s);
    1279             :         }
    1280             :     }
    1281             : 
    1282        5716 :     if (s->oformat->deinit)
    1283        2157 :         s->oformat->deinit(s);
    1284             : 
    1285       11432 :     s->internal->initialized =
    1286       11432 :     s->internal->streams_initialized = 0;
    1287             : 
    1288        5716 :     if (s->pb)
    1289        5618 :        avio_flush(s->pb);
    1290        5716 :     if (ret == 0)
    1291        5716 :        ret = s->pb ? s->pb->error : 0;
    1292       11598 :     for (i = 0; i < s->nb_streams; i++) {
    1293        5882 :         av_freep(&s->streams[i]->priv_data);
    1294        5882 :         av_freep(&s->streams[i]->index_entries);
    1295             :     }
    1296        5716 :     if (s->oformat->priv_class)
    1297        3360 :         av_opt_free(s->priv_data);
    1298        5716 :     av_freep(&s->priv_data);
    1299        5716 :     return ret;
    1300             : }
    1301             : 
    1302           0 : int av_get_output_timestamp(struct AVFormatContext *s, int stream,
    1303             :                             int64_t *dts, int64_t *wall)
    1304             : {
    1305           0 :     if (!s->oformat || !s->oformat->get_output_timestamp)
    1306           0 :         return AVERROR(ENOSYS);
    1307           0 :     s->oformat->get_output_timestamp(s, stream, dts, wall);
    1308           0 :     return 0;
    1309             : }
    1310             : 
    1311        2561 : int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
    1312             :                      AVFormatContext *src, int interleave)
    1313             : {
    1314             :     AVPacket local_pkt;
    1315             :     int ret;
    1316             : 
    1317        2561 :     local_pkt = *pkt;
    1318        2561 :     local_pkt.stream_index = dst_stream;
    1319        2561 :     if (pkt->pts != AV_NOPTS_VALUE)
    1320        2561 :         local_pkt.pts = av_rescale_q(pkt->pts,
    1321        2561 :                                      src->streams[pkt->stream_index]->time_base,
    1322        2561 :                                      dst->streams[dst_stream]->time_base);
    1323        2561 :     if (pkt->dts != AV_NOPTS_VALUE)
    1324        2561 :         local_pkt.dts = av_rescale_q(pkt->dts,
    1325        2561 :                                      src->streams[pkt->stream_index]->time_base,
    1326        2561 :                                      dst->streams[dst_stream]->time_base);
    1327        2561 :     if (pkt->duration)
    1328        2561 :         local_pkt.duration = av_rescale_q(pkt->duration,
    1329        2561 :                                           src->streams[pkt->stream_index]->time_base,
    1330        2561 :                                           dst->streams[dst_stream]->time_base);
    1331             : 
    1332        2561 :     if (interleave) ret = av_interleaved_write_frame(dst, &local_pkt);
    1333        2561 :     else            ret = av_write_frame(dst, &local_pkt);
    1334        2561 :     pkt->buf = local_pkt.buf;
    1335        2561 :     pkt->side_data       = local_pkt.side_data;
    1336        2561 :     pkt->side_data_elems = local_pkt.side_data_elems;
    1337        2561 :     return ret;
    1338             : }
    1339             : 
    1340           0 : static int av_write_uncoded_frame_internal(AVFormatContext *s, int stream_index,
    1341             :                                            AVFrame *frame, int interleaved)
    1342             : {
    1343             :     AVPacket pkt, *pktp;
    1344             : 
    1345           0 :     av_assert0(s->oformat);
    1346           0 :     if (!s->oformat->write_uncoded_frame)
    1347           0 :         return AVERROR(ENOSYS);
    1348             : 
    1349           0 :     if (!frame) {
    1350           0 :         pktp = NULL;
    1351             :     } else {
    1352           0 :         pktp = &pkt;
    1353           0 :         av_init_packet(&pkt);
    1354           0 :         pkt.data = (void *)frame;
    1355           0 :         pkt.size         = UNCODED_FRAME_PACKET_SIZE;
    1356           0 :         pkt.pts          =
    1357           0 :         pkt.dts          = frame->pts;
    1358           0 :         pkt.duration     = frame->pkt_duration;
    1359           0 :         pkt.stream_index = stream_index;
    1360           0 :         pkt.flags |= AV_PKT_FLAG_UNCODED_FRAME;
    1361             :     }
    1362             : 
    1363           0 :     return interleaved ? av_interleaved_write_frame(s, pktp) :
    1364             :                          av_write_frame(s, pktp);
    1365             : }
    1366             : 
    1367           0 : int av_write_uncoded_frame(AVFormatContext *s, int stream_index,
    1368             :                            AVFrame *frame)
    1369             : {
    1370           0 :     return av_write_uncoded_frame_internal(s, stream_index, frame, 0);
    1371             : }
    1372             : 
    1373           0 : int av_interleaved_write_uncoded_frame(AVFormatContext *s, int stream_index,
    1374             :                                        AVFrame *frame)
    1375             : {
    1376           0 :     return av_write_uncoded_frame_internal(s, stream_index, frame, 1);
    1377             : }
    1378             : 
    1379           0 : int av_write_uncoded_frame_query(AVFormatContext *s, int stream_index)
    1380             : {
    1381           0 :     av_assert0(s->oformat);
    1382           0 :     if (!s->oformat->write_uncoded_frame)
    1383           0 :         return AVERROR(ENOSYS);
    1384           0 :     return s->oformat->write_uncoded_frame(s, stream_index, NULL,
    1385             :                                            AV_WRITE_UNCODED_FRAME_QUERY);
    1386             : }

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