| /* |
| * muxing functions for use within FFmpeg |
| * Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "avformat.h" |
| #include "avio_internal.h" |
| #include "internal.h" |
| #include "libavcodec/internal.h" |
| #include "libavcodec/bytestream.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/dict.h" |
| #include "libavutil/pixdesc.h" |
| #include "libavutil/timestamp.h" |
| #include "metadata.h" |
| #include "id3v2.h" |
| #include "libavutil/avassert.h" |
| #include "libavutil/avstring.h" |
| #include "libavutil/internal.h" |
| #include "libavutil/mathematics.h" |
| #include "libavutil/parseutils.h" |
| #include "libavutil/time.h" |
| #include "riff.h" |
| #include "audiointerleave.h" |
| #include "url.h" |
| #include <stdarg.h> |
| #if CONFIG_NETWORK |
| #include "network.h" |
| #endif |
| |
| #undef NDEBUG |
| #include <assert.h> |
| |
| /** |
| * @file |
| * muxing functions for use within libavformat |
| */ |
| |
| /* fraction handling */ |
| |
| /** |
| * f = val + (num / den) + 0.5. |
| * |
| * 'num' is normalized so that it is such as 0 <= num < den. |
| * |
| * @param f fractional number |
| * @param val integer value |
| * @param num must be >= 0 |
| * @param den must be >= 1 |
| */ |
| static void frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den) |
| { |
| num += (den >> 1); |
| if (num >= den) { |
| val += num / den; |
| num = num % den; |
| } |
| f->val = val; |
| f->num = num; |
| f->den = den; |
| } |
| |
| /** |
| * Fractional addition to f: f = f + (incr / f->den). |
| * |
| * @param f fractional number |
| * @param incr increment, can be positive or negative |
| */ |
| static void frac_add(AVFrac *f, int64_t incr) |
| { |
| int64_t num, den; |
| |
| num = f->num + incr; |
| den = f->den; |
| if (num < 0) { |
| f->val += num / den; |
| num = num % den; |
| if (num < 0) { |
| num += den; |
| f->val--; |
| } |
| } else if (num >= den) { |
| f->val += num / den; |
| num = num % den; |
| } |
| f->num = num; |
| } |
| |
| AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precision) |
| { |
| AVRational q; |
| int j; |
| |
| q = st->time_base; |
| |
| for (j=2; j<14; j+= 1+(j>2)) |
| while (q.den / q.num < min_precision && q.num % j == 0) |
| q.num /= j; |
| while (q.den / q.num < min_precision && q.den < (1<<24)) |
| q.den <<= 1; |
| |
| return q; |
| } |
| |
| int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat, |
| const char *format, const char *filename) |
| { |
| AVFormatContext *s = avformat_alloc_context(); |
| int ret = 0; |
| |
| *avctx = NULL; |
| if (!s) |
| goto nomem; |
| |
| if (!oformat) { |
| if (format) { |
| oformat = av_guess_format(format, NULL, NULL); |
| if (!oformat) { |
| av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format); |
| ret = AVERROR(EINVAL); |
| goto error; |
| } |
| } else { |
| oformat = av_guess_format(NULL, filename, NULL); |
| if (!oformat) { |
| ret = AVERROR(EINVAL); |
| av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n", |
| filename); |
| goto error; |
| } |
| } |
| } |
| |
| s->oformat = oformat; |
| if (s->oformat->priv_data_size > 0) { |
| s->priv_data = av_mallocz(s->oformat->priv_data_size); |
| if (!s->priv_data) |
| goto nomem; |
| if (s->oformat->priv_class) { |
| *(const AVClass**)s->priv_data= s->oformat->priv_class; |
| av_opt_set_defaults(s->priv_data); |
| } |
| } else |
| s->priv_data = NULL; |
| |
| if (filename) |
| av_strlcpy(s->filename, filename, sizeof(s->filename)); |
| *avctx = s; |
| return 0; |
| nomem: |
| av_log(s, AV_LOG_ERROR, "Out of memory\n"); |
| ret = AVERROR(ENOMEM); |
| error: |
| avformat_free_context(s); |
| return ret; |
| } |
| |
| #if FF_API_ALLOC_OUTPUT_CONTEXT |
| AVFormatContext *avformat_alloc_output_context(const char *format, |
| AVOutputFormat *oformat, const char *filename) |
| { |
| AVFormatContext *avctx; |
| int ret = avformat_alloc_output_context2(&avctx, oformat, format, filename); |
| return ret < 0 ? NULL : avctx; |
| } |
| #endif |
| |
| static int validate_codec_tag(AVFormatContext *s, AVStream *st) |
| { |
| const AVCodecTag *avctag; |
| int n; |
| enum AVCodecID id = AV_CODEC_ID_NONE; |
| int64_t tag = -1; |
| |
| /** |
| * Check that tag + id is in the table |
| * If neither is in the table -> OK |
| * If tag is in the table with another id -> FAIL |
| * If id is in the table with another tag -> FAIL unless strict < normal |
| */ |
| for (n = 0; s->oformat->codec_tag[n]; n++) { |
| avctag = s->oformat->codec_tag[n]; |
| while (avctag->id != AV_CODEC_ID_NONE) { |
| if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codec->codec_tag)) { |
| id = avctag->id; |
| if (id == st->codec->codec_id) |
| return 1; |
| } |
| if (avctag->id == st->codec->codec_id) |
| tag = avctag->tag; |
| avctag++; |
| } |
| } |
| if (id != AV_CODEC_ID_NONE) |
| return 0; |
| if (tag >= 0 && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL)) |
| return 0; |
| return 1; |
| } |
| |
| |
| static int init_muxer(AVFormatContext *s, AVDictionary **options) |
| { |
| int ret = 0, i; |
| AVStream *st; |
| AVDictionary *tmp = NULL; |
| AVCodecContext *codec = NULL; |
| AVOutputFormat *of = s->oformat; |
| AVDictionaryEntry *e; |
| |
| if (options) |
| av_dict_copy(&tmp, *options, 0); |
| |
| if ((ret = av_opt_set_dict(s, &tmp)) < 0) |
| goto fail; |
| if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class && |
| (ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0) |
| goto fail; |
| |
| #if FF_API_LAVF_BITEXACT |
| if (s->nb_streams && s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT) |
| s->flags |= AVFMT_FLAG_BITEXACT; |
| #endif |
| |
| // some sanity checks |
| if (s->nb_streams == 0 && !(of->flags & AVFMT_NOSTREAMS)) { |
| av_log(s, AV_LOG_ERROR, "No streams to mux were specified\n"); |
| ret = AVERROR(EINVAL); |
| goto fail; |
| } |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| st = s->streams[i]; |
| codec = st->codec; |
| |
| #if FF_API_LAVF_CODEC_TB |
| FF_DISABLE_DEPRECATION_WARNINGS |
| if (!st->time_base.num && codec->time_base.num) { |
| av_log(s, AV_LOG_WARNING, "Using AVStream.codec.time_base as a " |
| "timebase hint to the muxer is deprecated. Set " |
| "AVStream.time_base instead.\n"); |
| avpriv_set_pts_info(st, 64, codec->time_base.num, codec->time_base.den); |
| } |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| |
| if (!st->time_base.num) { |
| /* fall back on the default timebase values */ |
| if (codec->codec_type == AVMEDIA_TYPE_AUDIO && codec->sample_rate) |
| avpriv_set_pts_info(st, 64, 1, codec->sample_rate); |
| else |
| avpriv_set_pts_info(st, 33, 1, 90000); |
| } |
| |
| switch (codec->codec_type) { |
| case AVMEDIA_TYPE_AUDIO: |
| if (codec->sample_rate <= 0) { |
| av_log(s, AV_LOG_ERROR, "sample rate not set\n"); |
| ret = AVERROR(EINVAL); |
| goto fail; |
| } |
| if (!codec->block_align) |
| codec->block_align = codec->channels * |
| av_get_bits_per_sample(codec->codec_id) >> 3; |
| break; |
| case AVMEDIA_TYPE_VIDEO: |
| if ((codec->width <= 0 || codec->height <= 0) && |
| !(of->flags & AVFMT_NODIMENSIONS)) { |
| av_log(s, AV_LOG_ERROR, "dimensions not set\n"); |
| ret = AVERROR(EINVAL); |
| goto fail; |
| } |
| if (av_cmp_q(st->sample_aspect_ratio, codec->sample_aspect_ratio) |
| && FFABS(av_q2d(st->sample_aspect_ratio) - av_q2d(codec->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio) |
| ) { |
| if (st->sample_aspect_ratio.num != 0 && |
| st->sample_aspect_ratio.den != 0 && |
| codec->sample_aspect_ratio.num != 0 && |
| codec->sample_aspect_ratio.den != 0) { |
| av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer " |
| "(%d/%d) and encoder layer (%d/%d)\n", |
| st->sample_aspect_ratio.num, st->sample_aspect_ratio.den, |
| codec->sample_aspect_ratio.num, |
| codec->sample_aspect_ratio.den); |
| ret = AVERROR(EINVAL); |
| goto fail; |
| } |
| } |
| break; |
| } |
| |
| if (of->codec_tag) { |
| if ( codec->codec_tag |
| && codec->codec_id == AV_CODEC_ID_RAWVIDEO |
| && ( av_codec_get_tag(of->codec_tag, codec->codec_id) == 0 |
| || av_codec_get_tag(of->codec_tag, codec->codec_id) == MKTAG('r', 'a', 'w', ' ')) |
| && !validate_codec_tag(s, st)) { |
| // the current rawvideo encoding system ends up setting |
| // the wrong codec_tag for avi/mov, we override it here |
| codec->codec_tag = 0; |
| } |
| if (codec->codec_tag) { |
| if (!validate_codec_tag(s, st)) { |
| char tagbuf[32], tagbuf2[32]; |
| av_get_codec_tag_string(tagbuf, sizeof(tagbuf), codec->codec_tag); |
| av_get_codec_tag_string(tagbuf2, sizeof(tagbuf2), av_codec_get_tag(s->oformat->codec_tag, codec->codec_id)); |
| av_log(s, AV_LOG_ERROR, |
| "Tag %s/0x%08x incompatible with output codec id '%d' (%s)\n", |
| tagbuf, codec->codec_tag, codec->codec_id, tagbuf2); |
| ret = AVERROR_INVALIDDATA; |
| goto fail; |
| } |
| } else |
| codec->codec_tag = av_codec_get_tag(of->codec_tag, codec->codec_id); |
| } |
| |
| if (of->flags & AVFMT_GLOBALHEADER && |
| !(codec->flags & CODEC_FLAG_GLOBAL_HEADER)) |
| av_log(s, AV_LOG_WARNING, |
| "Codec for stream %d does not use global headers " |
| "but container format requires global headers\n", i); |
| |
| if (codec->codec_type != AVMEDIA_TYPE_ATTACHMENT) |
| s->internal->nb_interleaved_streams++; |
| } |
| |
| if (!s->priv_data && of->priv_data_size > 0) { |
| s->priv_data = av_mallocz(of->priv_data_size); |
| if (!s->priv_data) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| if (of->priv_class) { |
| *(const AVClass **)s->priv_data = of->priv_class; |
| av_opt_set_defaults(s->priv_data); |
| if ((ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0) |
| goto fail; |
| } |
| } |
| |
| /* set muxer identification string */ |
| if (!(s->flags & AVFMT_FLAG_BITEXACT)) { |
| av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0); |
| } else { |
| av_dict_set(&s->metadata, "encoder", NULL, 0); |
| } |
| |
| for (e = NULL; e = av_dict_get(s->metadata, "encoder-", e, AV_DICT_IGNORE_SUFFIX); ) { |
| av_dict_set(&s->metadata, e->key, NULL, 0); |
| } |
| |
| if (options) { |
| av_dict_free(options); |
| *options = tmp; |
| } |
| |
| return 0; |
| |
| fail: |
| av_dict_free(&tmp); |
| return ret; |
| } |
| |
| static int init_pts(AVFormatContext *s) |
| { |
| int i; |
| AVStream *st; |
| |
| /* init PTS generation */ |
| for (i = 0; i < s->nb_streams; i++) { |
| int64_t den = AV_NOPTS_VALUE; |
| st = s->streams[i]; |
| |
| switch (st->codec->codec_type) { |
| case AVMEDIA_TYPE_AUDIO: |
| den = (int64_t)st->time_base.num * st->codec->sample_rate; |
| break; |
| case AVMEDIA_TYPE_VIDEO: |
| den = (int64_t)st->time_base.num * st->codec->time_base.den; |
| break; |
| default: |
| break; |
| } |
| if (den != AV_NOPTS_VALUE) { |
| if (den <= 0) |
| return AVERROR_INVALIDDATA; |
| |
| #if FF_API_LAVF_FRAC |
| FF_DISABLE_DEPRECATION_WARNINGS |
| frac_init(&st->pts, 0, 0, den); |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| } |
| } |
| |
| return 0; |
| } |
| |
| int avformat_write_header(AVFormatContext *s, AVDictionary **options) |
| { |
| int ret = 0; |
| |
| if (ret = init_muxer(s, options)) |
| return ret; |
| |
| if (s->oformat->write_header) { |
| ret = s->oformat->write_header(s); |
| if (ret >= 0 && s->pb && s->pb->error < 0) |
| ret = s->pb->error; |
| if (ret < 0) |
| return ret; |
| if (s->flush_packets && s->pb && s->pb->error >= 0 && s->flags & AVFMT_FLAG_FLUSH_PACKETS) |
| avio_flush(s->pb); |
| } |
| |
| if ((ret = init_pts(s)) < 0) |
| return ret; |
| |
| if (s->avoid_negative_ts < 0) { |
| if (s->oformat->flags & (AVFMT_TS_NEGATIVE | AVFMT_NOTIMESTAMPS)) { |
| s->avoid_negative_ts = 0; |
| } else |
| s->avoid_negative_ts = 1; |
| } |
| |
| return 0; |
| } |
| |
| #define AV_PKT_FLAG_UNCODED_FRAME 0x2000 |
| |
| /* Note: using sizeof(AVFrame) from outside lavu is unsafe in general, but |
| it is only being used internally to this file as a consistency check. |
| The value is chosen to be very unlikely to appear on its own and to cause |
| immediate failure if used anywhere as a real size. */ |
| #define UNCODED_FRAME_PACKET_SIZE (INT_MIN / 3 * 2 + (int)sizeof(AVFrame)) |
| |
| |
| //FIXME merge with compute_pkt_fields |
| static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt) |
| { |
| int delay = FFMAX(st->codec->has_b_frames, st->codec->max_b_frames > 0); |
| int num, den, i; |
| int frame_size; |
| |
| av_dlog(s, "compute_pkt_fields2: pts:%s dts:%s cur_dts:%s b:%d size:%d st:%d\n", |
| av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), delay, pkt->size, pkt->stream_index); |
| |
| if (pkt->duration < 0 && st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) { |
| av_log(s, AV_LOG_WARNING, "Packet with invalid duration %d in stream %d\n", |
| pkt->duration, pkt->stream_index); |
| pkt->duration = 0; |
| } |
| |
| /* duration field */ |
| if (pkt->duration == 0) { |
| ff_compute_frame_duration(&num, &den, st, NULL, pkt); |
| if (den && num) { |
| pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num); |
| } |
| } |
| |
| if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay == 0) |
| pkt->pts = pkt->dts; |
| |
| //XXX/FIXME this is a temporary hack until all encoders output pts |
| if ((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay) { |
| static int warned; |
| if (!warned) { |
| av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n"); |
| warned = 1; |
| } |
| #if FF_API_LAVF_FRAC |
| FF_DISABLE_DEPRECATION_WARNINGS |
| pkt->dts = |
| // pkt->pts= st->cur_dts; |
| pkt->pts = st->pts.val; |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| } |
| |
| //calculate dts from pts |
| if (pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) { |
| st->pts_buffer[0] = pkt->pts; |
| for (i = 1; i < delay + 1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++) |
| st->pts_buffer[i] = pkt->pts + (i - delay - 1) * pkt->duration; |
| for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++) |
| FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]); |
| |
| pkt->dts = st->pts_buffer[0]; |
| } |
| |
| if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && |
| ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) && |
| st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)) { |
| av_log(s, AV_LOG_ERROR, |
| "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %s >= %s\n", |
| st->index, av_ts2str(st->cur_dts), av_ts2str(pkt->dts)); |
| return AVERROR(EINVAL); |
| } |
| if (pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts) { |
| av_log(s, AV_LOG_ERROR, "pts (%s) < dts (%s) in stream %d\n", |
| av_ts2str(pkt->pts), av_ts2str(pkt->dts), st->index); |
| return AVERROR(EINVAL); |
| } |
| |
| av_dlog(s, "av_write_frame: pts2:%s dts2:%s\n", |
| av_ts2str(pkt->pts), av_ts2str(pkt->dts)); |
| st->cur_dts = pkt->dts; |
| #if FF_API_LAVF_FRAC |
| FF_DISABLE_DEPRECATION_WARNINGS |
| st->pts.val = pkt->dts; |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| |
| /* update pts */ |
| switch (st->codec->codec_type) { |
| case AVMEDIA_TYPE_AUDIO: |
| frame_size = (pkt->flags & AV_PKT_FLAG_UNCODED_FRAME) ? |
| ((AVFrame *)pkt->data)->nb_samples : |
| av_get_audio_frame_duration(st->codec, pkt->size); |
| |
| /* HACK/FIXME, we skip the initial 0 size packets as they are most |
| * likely equal to the encoder delay, but it would be better if we |
| * had the real timestamps from the encoder */ |
| #if FF_API_LAVF_FRAC |
| FF_DISABLE_DEPRECATION_WARNINGS |
| if (frame_size >= 0 && (pkt->size || st->pts.num != st->pts.den >> 1 || st->pts.val)) { |
| frac_add(&st->pts, (int64_t)st->time_base.den * frame_size); |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| } |
| break; |
| case AVMEDIA_TYPE_VIDEO: |
| #if FF_API_LAVF_FRAC |
| FF_DISABLE_DEPRECATION_WARNINGS |
| frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num); |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| break; |
| } |
| return 0; |
| } |
| |
| /** |
| * Make timestamps non negative, move side data from payload to internal struct, call muxer, and restore |
| * sidedata. |
| * |
| * FIXME: this function should NEVER get undefined pts/dts beside when the |
| * AVFMT_NOTIMESTAMPS is set. |
| * Those additional safety checks should be dropped once the correct checks |
| * are set in the callers. |
| */ |
| static int write_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| int ret, did_split; |
| |
| if (s->output_ts_offset) { |
| AVStream *st = s->streams[pkt->stream_index]; |
| int64_t offset = av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, st->time_base); |
| |
| if (pkt->dts != AV_NOPTS_VALUE) |
| pkt->dts += offset; |
| if (pkt->pts != AV_NOPTS_VALUE) |
| pkt->pts += offset; |
| } |
| |
| if (s->avoid_negative_ts > 0) { |
| AVStream *st = s->streams[pkt->stream_index]; |
| int64_t offset = st->mux_ts_offset; |
| |
| if ((pkt->dts < 0 || s->avoid_negative_ts == 2) && pkt->dts != AV_NOPTS_VALUE && !s->offset) { |
| s->offset = -pkt->dts; |
| s->offset_timebase = st->time_base; |
| } |
| |
| if (s->offset && !offset) { |
| offset = st->mux_ts_offset = |
| av_rescale_q_rnd(s->offset, |
| s->offset_timebase, |
| st->time_base, |
| AV_ROUND_UP); |
| } |
| |
| if (pkt->dts != AV_NOPTS_VALUE) |
| pkt->dts += offset; |
| if (pkt->pts != AV_NOPTS_VALUE) |
| pkt->pts += offset; |
| |
| av_assert2(pkt->dts == AV_NOPTS_VALUE || pkt->dts >= 0); |
| } |
| |
| did_split = av_packet_split_side_data(pkt); |
| if ((pkt->flags & AV_PKT_FLAG_UNCODED_FRAME)) { |
| AVFrame *frame = (AVFrame *)pkt->data; |
| av_assert0(pkt->size == UNCODED_FRAME_PACKET_SIZE); |
| ret = s->oformat->write_uncoded_frame(s, pkt->stream_index, &frame, 0); |
| av_frame_free(&frame); |
| } else { |
| ret = s->oformat->write_packet(s, pkt); |
| } |
| |
| if (s->flush_packets && s->pb && ret >= 0 && s->flags & AVFMT_FLAG_FLUSH_PACKETS) |
| avio_flush(s->pb); |
| |
| if (did_split) |
| av_packet_merge_side_data(pkt); |
| |
| return ret; |
| } |
| |
| static int check_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| if (!pkt) |
| return 0; |
| |
| if (pkt->stream_index < 0 || pkt->stream_index >= s->nb_streams) { |
| av_log(s, AV_LOG_ERROR, "Invalid packet stream index: %d\n", |
| pkt->stream_index); |
| return AVERROR(EINVAL); |
| } |
| |
| if (s->streams[pkt->stream_index]->codec->codec_type == AVMEDIA_TYPE_ATTACHMENT) { |
| av_log(s, AV_LOG_ERROR, "Received a packet for an attachment stream.\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| return 0; |
| } |
| |
| int av_write_frame(AVFormatContext *s, AVPacket *pkt) |
| { |
| int ret; |
| |
| ret = check_packet(s, pkt); |
| if (ret < 0) |
| return ret; |
| |
| if (!pkt) { |
| if (s->oformat->flags & AVFMT_ALLOW_FLUSH) { |
| ret = s->oformat->write_packet(s, NULL); |
| if (s->flush_packets && s->pb && s->pb->error >= 0 && s->flags & AVFMT_FLAG_FLUSH_PACKETS) |
| avio_flush(s->pb); |
| if (ret >= 0 && s->pb && s->pb->error < 0) |
| ret = s->pb->error; |
| return ret; |
| } |
| return 1; |
| } |
| |
| ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt); |
| |
| if (ret < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS)) |
| return ret; |
| |
| ret = write_packet(s, pkt); |
| if (ret >= 0 && s->pb && s->pb->error < 0) |
| ret = s->pb->error; |
| |
| if (ret >= 0) |
| s->streams[pkt->stream_index]->nb_frames++; |
| return ret; |
| } |
| |
| #define CHUNK_START 0x1000 |
| |
| int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt, |
| int (*compare)(AVFormatContext *, AVPacket *, AVPacket *)) |
| { |
| int ret; |
| AVPacketList **next_point, *this_pktl; |
| AVStream *st = s->streams[pkt->stream_index]; |
| int chunked = s->max_chunk_size || s->max_chunk_duration; |
| |
| this_pktl = av_mallocz(sizeof(AVPacketList)); |
| if (!this_pktl) |
| return AVERROR(ENOMEM); |
| this_pktl->pkt = *pkt; |
| #if FF_API_DESTRUCT_PACKET |
| FF_DISABLE_DEPRECATION_WARNINGS |
| pkt->destruct = NULL; // do not free original but only the copy |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| pkt->buf = NULL; |
| pkt->side_data = NULL; |
| pkt->side_data_elems = 0; |
| if ((pkt->flags & AV_PKT_FLAG_UNCODED_FRAME)) { |
| av_assert0(pkt->size == UNCODED_FRAME_PACKET_SIZE); |
| av_assert0(((AVFrame *)pkt->data)->buf); |
| } else { |
| // Duplicate the packet if it uses non-allocated memory |
| if ((ret = av_dup_packet(&this_pktl->pkt)) < 0) { |
| av_free(this_pktl); |
| return ret; |
| } |
| } |
| |
| if (s->streams[pkt->stream_index]->last_in_packet_buffer) { |
| next_point = &(st->last_in_packet_buffer->next); |
| } else { |
| next_point = &s->packet_buffer; |
| } |
| |
| if (chunked) { |
| uint64_t max= av_rescale_q_rnd(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base, AV_ROUND_UP); |
| st->interleaver_chunk_size += pkt->size; |
| st->interleaver_chunk_duration += pkt->duration; |
| if ( (s->max_chunk_size && st->interleaver_chunk_size > s->max_chunk_size) |
| || (max && st->interleaver_chunk_duration > max)) { |
| st->interleaver_chunk_size = 0; |
| this_pktl->pkt.flags |= CHUNK_START; |
| if (max && st->interleaver_chunk_duration > max) { |
| int64_t syncoffset = (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)*max/2; |
| int64_t syncto = av_rescale(pkt->dts + syncoffset, 1, max)*max - syncoffset; |
| |
| st->interleaver_chunk_duration += (pkt->dts - syncto)/8 - max; |
| } else |
| st->interleaver_chunk_duration = 0; |
| } |
| } |
| if (*next_point) { |
| if (chunked && !(this_pktl->pkt.flags & CHUNK_START)) |
| goto next_non_null; |
| |
| if (compare(s, &s->packet_buffer_end->pkt, pkt)) { |
| while ( *next_point |
| && ((chunked && !((*next_point)->pkt.flags&CHUNK_START)) |
| || !compare(s, &(*next_point)->pkt, pkt))) |
| next_point = &(*next_point)->next; |
| if (*next_point) |
| goto next_non_null; |
| } else { |
| next_point = &(s->packet_buffer_end->next); |
| } |
| } |
| av_assert1(!*next_point); |
| |
| s->packet_buffer_end = this_pktl; |
| next_non_null: |
| |
| this_pktl->next = *next_point; |
| |
| s->streams[pkt->stream_index]->last_in_packet_buffer = |
| *next_point = this_pktl; |
| |
| return 0; |
| } |
| |
| static int interleave_compare_dts(AVFormatContext *s, AVPacket *next, |
| AVPacket *pkt) |
| { |
| AVStream *st = s->streams[pkt->stream_index]; |
| AVStream *st2 = s->streams[next->stream_index]; |
| int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts, |
| st->time_base); |
| if (s->audio_preload && ((st->codec->codec_type == AVMEDIA_TYPE_AUDIO) != (st2->codec->codec_type == AVMEDIA_TYPE_AUDIO))) { |
| 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); |
| 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); |
| if (ts == ts2) { |
| 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 |
| -( 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; |
| ts2=0; |
| } |
| comp= (ts>ts2) - (ts<ts2); |
| } |
| |
| if (comp == 0) |
| return pkt->stream_index < next->stream_index; |
| return comp > 0; |
| } |
| |
| int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, |
| AVPacket *pkt, int flush) |
| { |
| AVPacketList *pktl; |
| int stream_count = 0; |
| int noninterleaved_count = 0; |
| int i, ret; |
| |
| if (pkt) { |
| if ((ret = ff_interleave_add_packet(s, pkt, interleave_compare_dts)) < 0) |
| return ret; |
| } |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| if (s->streams[i]->last_in_packet_buffer) { |
| ++stream_count; |
| } else if (s->streams[i]->codec->codec_type != AVMEDIA_TYPE_ATTACHMENT && |
| s->streams[i]->codec->codec_id != AV_CODEC_ID_VP8 && |
| s->streams[i]->codec->codec_id != AV_CODEC_ID_VP9) { |
| ++noninterleaved_count; |
| } |
| } |
| |
| if (s->internal->nb_interleaved_streams == stream_count) |
| flush = 1; |
| |
| if (s->max_interleave_delta > 0 && |
| s->packet_buffer && |
| !flush && |
| s->internal->nb_interleaved_streams == stream_count+noninterleaved_count |
| ) { |
| AVPacket *top_pkt = &s->packet_buffer->pkt; |
| int64_t delta_dts = INT64_MIN; |
| int64_t top_dts = av_rescale_q(top_pkt->dts, |
| s->streams[top_pkt->stream_index]->time_base, |
| AV_TIME_BASE_Q); |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| int64_t last_dts; |
| const AVPacketList *last = s->streams[i]->last_in_packet_buffer; |
| |
| if (!last) |
| continue; |
| |
| last_dts = av_rescale_q(last->pkt.dts, |
| s->streams[i]->time_base, |
| AV_TIME_BASE_Q); |
| delta_dts = FFMAX(delta_dts, last_dts - top_dts); |
| } |
| |
| if (delta_dts > s->max_interleave_delta) { |
| av_log(s, AV_LOG_DEBUG, |
| "Delay between the first packet and last packet in the " |
| "muxing queue is %"PRId64" > %"PRId64": forcing output\n", |
| delta_dts, s->max_interleave_delta); |
| flush = 1; |
| } |
| } |
| |
| if (stream_count && flush) { |
| AVStream *st; |
| pktl = s->packet_buffer; |
| *out = pktl->pkt; |
| st = s->streams[out->stream_index]; |
| |
| s->packet_buffer = pktl->next; |
| if (!s->packet_buffer) |
| s->packet_buffer_end = NULL; |
| |
| if (st->last_in_packet_buffer == pktl) |
| st->last_in_packet_buffer = NULL; |
| av_freep(&pktl); |
| |
| return 1; |
| } else { |
| av_init_packet(out); |
| return 0; |
| } |
| } |
| |
| /** |
| * Interleave an AVPacket correctly so it can be muxed. |
| * @param out the interleaved packet will be output here |
| * @param in the input packet |
| * @param flush 1 if no further packets are available as input and all |
| * remaining packets should be output |
| * @return 1 if a packet was output, 0 if no packet could be output, |
| * < 0 if an error occurred |
| */ |
| static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush) |
| { |
| if (s->oformat->interleave_packet) { |
| int ret = s->oformat->interleave_packet(s, out, in, flush); |
| if (in) |
| av_free_packet(in); |
| return ret; |
| } else |
| return ff_interleave_packet_per_dts(s, out, in, flush); |
| } |
| |
| int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt) |
| { |
| int ret, flush = 0; |
| |
| ret = check_packet(s, pkt); |
| if (ret < 0) |
| goto fail; |
| |
| if (pkt) { |
| AVStream *st = s->streams[pkt->stream_index]; |
| |
| av_dlog(s, "av_interleaved_write_frame size:%d dts:%s pts:%s\n", |
| pkt->size, av_ts2str(pkt->dts), av_ts2str(pkt->pts)); |
| if ((ret = compute_pkt_fields2(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS)) |
| goto fail; |
| |
| if (pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS)) { |
| ret = AVERROR(EINVAL); |
| goto fail; |
| } |
| } else { |
| av_dlog(s, "av_interleaved_write_frame FLUSH\n"); |
| flush = 1; |
| } |
| |
| for (;; ) { |
| AVPacket opkt; |
| int ret = interleave_packet(s, &opkt, pkt, flush); |
| if (pkt) { |
| memset(pkt, 0, sizeof(*pkt)); |
| av_init_packet(pkt); |
| pkt = NULL; |
| } |
| if (ret <= 0) //FIXME cleanup needed for ret<0 ? |
| return ret; |
| |
| ret = write_packet(s, &opkt); |
| if (ret >= 0) |
| s->streams[opkt.stream_index]->nb_frames++; |
| |
| av_free_packet(&opkt); |
| |
| if (ret < 0) |
| return ret; |
| if(s->pb && s->pb->error) |
| return s->pb->error; |
| } |
| fail: |
| av_packet_unref(pkt); |
| return ret; |
| } |
| |
| int av_write_trailer(AVFormatContext *s) |
| { |
| int ret, i; |
| |
| for (;; ) { |
| AVPacket pkt; |
| ret = interleave_packet(s, &pkt, NULL, 1); |
| if (ret < 0) //FIXME cleanup needed for ret<0 ? |
| goto fail; |
| if (!ret) |
| break; |
| |
| ret = write_packet(s, &pkt); |
| if (ret >= 0) |
| s->streams[pkt.stream_index]->nb_frames++; |
| |
| av_free_packet(&pkt); |
| |
| if (ret < 0) |
| goto fail; |
| if(s->pb && s->pb->error) |
| goto fail; |
| } |
| |
| if (s->oformat->write_trailer) |
| ret = s->oformat->write_trailer(s); |
| |
| fail: |
| if (s->pb) |
| avio_flush(s->pb); |
| if (ret == 0) |
| ret = s->pb ? s->pb->error : 0; |
| for (i = 0; i < s->nb_streams; i++) { |
| av_freep(&s->streams[i]->priv_data); |
| av_freep(&s->streams[i]->index_entries); |
| } |
| if (s->oformat->priv_class) |
| av_opt_free(s->priv_data); |
| av_freep(&s->priv_data); |
| return ret; |
| } |
| |
| int av_get_output_timestamp(struct AVFormatContext *s, int stream, |
| int64_t *dts, int64_t *wall) |
| { |
| if (!s->oformat || !s->oformat->get_output_timestamp) |
| return AVERROR(ENOSYS); |
| s->oformat->get_output_timestamp(s, stream, dts, wall); |
| return 0; |
| } |
| |
| int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt, |
| AVFormatContext *src, int interleave) |
| { |
| AVPacket local_pkt; |
| int ret; |
| |
| local_pkt = *pkt; |
| local_pkt.stream_index = dst_stream; |
| if (pkt->pts != AV_NOPTS_VALUE) |
| local_pkt.pts = av_rescale_q(pkt->pts, |
| src->streams[pkt->stream_index]->time_base, |
| dst->streams[dst_stream]->time_base); |
| if (pkt->dts != AV_NOPTS_VALUE) |
| local_pkt.dts = av_rescale_q(pkt->dts, |
| src->streams[pkt->stream_index]->time_base, |
| dst->streams[dst_stream]->time_base); |
| if (pkt->duration) |
| local_pkt.duration = av_rescale_q(pkt->duration, |
| src->streams[pkt->stream_index]->time_base, |
| dst->streams[dst_stream]->time_base); |
| |
| if (interleave) ret = av_interleaved_write_frame(dst, &local_pkt); |
| else ret = av_write_frame(dst, &local_pkt); |
| pkt->buf = local_pkt.buf; |
| #if FF_API_DESTRUCT_PACKET |
| FF_DISABLE_DEPRECATION_WARNINGS |
| pkt->destruct = local_pkt.destruct; |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| return ret; |
| } |
| |
| static int av_write_uncoded_frame_internal(AVFormatContext *s, int stream_index, |
| AVFrame *frame, int interleaved) |
| { |
| AVPacket pkt, *pktp; |
| |
| av_assert0(s->oformat); |
| if (!s->oformat->write_uncoded_frame) |
| return AVERROR(ENOSYS); |
| |
| if (!frame) { |
| pktp = NULL; |
| } else { |
| pktp = &pkt; |
| av_init_packet(&pkt); |
| pkt.data = (void *)frame; |
| pkt.size = UNCODED_FRAME_PACKET_SIZE; |
| pkt.pts = |
| pkt.dts = frame->pts; |
| pkt.duration = av_frame_get_pkt_duration(frame); |
| pkt.stream_index = stream_index; |
| pkt.flags |= AV_PKT_FLAG_UNCODED_FRAME; |
| } |
| |
| return interleaved ? av_interleaved_write_frame(s, pktp) : |
| av_write_frame(s, pktp); |
| } |
| |
| int av_write_uncoded_frame(AVFormatContext *s, int stream_index, |
| AVFrame *frame) |
| { |
| return av_write_uncoded_frame_internal(s, stream_index, frame, 0); |
| } |
| |
| int av_interleaved_write_uncoded_frame(AVFormatContext *s, int stream_index, |
| AVFrame *frame) |
| { |
| return av_write_uncoded_frame_internal(s, stream_index, frame, 1); |
| } |
| |
| int av_write_uncoded_frame_query(AVFormatContext *s, int stream_index) |
| { |
| av_assert0(s->oformat); |
| if (!s->oformat->write_uncoded_frame) |
| return AVERROR(ENOSYS); |
| return s->oformat->write_uncoded_frame(s, stream_index, NULL, |
| AV_WRITE_UNCODED_FRAME_QUERY); |
| } |
