mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-12-05 10:48:25 -05:00
5856 lines
201 KiB
C
Executable File
5856 lines
201 KiB
C
Executable File
/*
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* various utility functions for use within FFmpeg
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/dict.h"
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#include "libavutil/internal.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/opt.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/pixfmt.h"
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#include "libavutil/thread.h"
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#include "libavutil/time.h"
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#include "libavutil/timestamp.h"
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#include "libavcodec/bytestream.h"
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#include "libavcodec/internal.h"
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#include "libavcodec/raw.h"
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#include "avformat.h"
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#include "avio_internal.h"
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#include "id3v2.h"
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#include "internal.h"
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#if CONFIG_NETWORK
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#include "network.h"
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#endif
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#include "url.h"
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#include "libavutil/ffversion.h"
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const char av_format_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
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static AVMutex avformat_mutex = AV_MUTEX_INITIALIZER;
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/**
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* @file
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* various utility functions for use within FFmpeg
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*/
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unsigned avformat_version(void)
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{
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av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
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return LIBAVFORMAT_VERSION_INT;
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}
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const char *avformat_configuration(void)
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{
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return FFMPEG_CONFIGURATION;
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}
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const char *avformat_license(void)
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{
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#define LICENSE_PREFIX "libavformat license: "
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return &LICENSE_PREFIX FFMPEG_LICENSE[sizeof(LICENSE_PREFIX) - 1];
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}
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int ff_lock_avformat(void)
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{
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return ff_mutex_lock(&avformat_mutex) ? -1 : 0;
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}
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int ff_unlock_avformat(void)
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{
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return ff_mutex_unlock(&avformat_mutex) ? -1 : 0;
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}
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#define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
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static int is_relative(int64_t ts) {
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return ts > (RELATIVE_TS_BASE - (1LL<<48));
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}
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/**
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* Wrap a given time stamp, if there is an indication for an overflow
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*
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* @param st stream
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* @param timestamp the time stamp to wrap
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* @return resulting time stamp
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*/
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static int64_t wrap_timestamp(const AVStream *st, int64_t timestamp)
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{
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if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
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st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
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if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
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timestamp < st->pts_wrap_reference)
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return timestamp + (1ULL << st->pts_wrap_bits);
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else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
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timestamp >= st->pts_wrap_reference)
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return timestamp - (1ULL << st->pts_wrap_bits);
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}
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return timestamp;
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}
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#if FF_API_FORMAT_GET_SET
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MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
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#if FF_API_LAVF_FFSERVER
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FF_DISABLE_DEPRECATION_WARNINGS
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MAKE_ACCESSORS(AVStream, stream, char *, recommended_encoder_configuration)
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
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MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
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MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
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MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
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MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
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MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
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MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)
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#if FF_API_OLD_OPEN_CALLBACKS
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FF_DISABLE_DEPRECATION_WARNINGS
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MAKE_ACCESSORS(AVFormatContext, format, AVOpenCallback, open_cb)
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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#endif
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int64_t av_stream_get_end_pts(const AVStream *st)
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{
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if (st->internal->priv_pts) {
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return st->internal->priv_pts->val;
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} else
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return AV_NOPTS_VALUE;
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}
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struct AVCodecParserContext *av_stream_get_parser(const AVStream *st)
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{
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return st->parser;
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}
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void av_format_inject_global_side_data(AVFormatContext *s)
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{
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int i;
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s->internal->inject_global_side_data = 1;
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for (i = 0; i < s->nb_streams; i++) {
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AVStream *st = s->streams[i];
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st->inject_global_side_data = 1;
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}
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}
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int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
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{
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av_assert0(!dst->codec_whitelist &&
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!dst->format_whitelist &&
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!dst->protocol_whitelist &&
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!dst->protocol_blacklist);
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dst-> codec_whitelist = av_strdup(src->codec_whitelist);
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dst->format_whitelist = av_strdup(src->format_whitelist);
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dst->protocol_whitelist = av_strdup(src->protocol_whitelist);
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dst->protocol_blacklist = av_strdup(src->protocol_blacklist);
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if ( (src-> codec_whitelist && !dst-> codec_whitelist)
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|| (src-> format_whitelist && !dst-> format_whitelist)
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|| (src->protocol_whitelist && !dst->protocol_whitelist)
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|| (src->protocol_blacklist && !dst->protocol_blacklist)) {
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av_log(dst, AV_LOG_ERROR, "Failed to duplicate black/whitelist\n");
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return AVERROR(ENOMEM);
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}
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return 0;
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}
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static const AVCodec *find_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
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{
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#if FF_API_LAVF_AVCTX
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FF_DISABLE_DEPRECATION_WARNINGS
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if (st->codec->codec)
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return st->codec->codec;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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switch (st->codecpar->codec_type) {
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case AVMEDIA_TYPE_VIDEO:
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if (s->video_codec) return s->video_codec;
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break;
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case AVMEDIA_TYPE_AUDIO:
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if (s->audio_codec) return s->audio_codec;
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break;
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case AVMEDIA_TYPE_SUBTITLE:
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if (s->subtitle_codec) return s->subtitle_codec;
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break;
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}
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return avcodec_find_decoder(codec_id);
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}
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static const AVCodec *find_probe_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
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{
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const AVCodec *codec;
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#if CONFIG_H264_DECODER
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/* Other parts of the code assume this decoder to be used for h264,
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* so force it if possible. */
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if (codec_id == AV_CODEC_ID_H264)
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return avcodec_find_decoder_by_name("h264");
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#endif
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codec = find_decoder(s, st, codec_id);
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if (!codec)
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return NULL;
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if (codec->capabilities & AV_CODEC_CAP_AVOID_PROBING) {
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const AVCodec *probe_codec = NULL;
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void *iter = NULL;
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while ((probe_codec = av_codec_iterate(&iter))) {
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if (probe_codec->id == codec->id &&
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av_codec_is_decoder(probe_codec) &&
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!(probe_codec->capabilities & (AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_EXPERIMENTAL))) {
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return probe_codec;
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}
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}
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}
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return codec;
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}
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#if FF_API_FORMAT_GET_SET
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int av_format_get_probe_score(const AVFormatContext *s)
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{
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return s->probe_score;
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}
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#endif
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/* an arbitrarily chosen "sane" max packet size -- 50M */
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#define SANE_CHUNK_SIZE (50000000)
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int ffio_limit(AVIOContext *s, int size)
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{
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if (s->maxsize>= 0) {
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int64_t remaining= s->maxsize - avio_tell(s);
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if (remaining < size) {
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int64_t newsize = avio_size(s);
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if (!s->maxsize || s->maxsize<newsize)
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s->maxsize = newsize - !newsize;
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remaining= s->maxsize - avio_tell(s);
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remaining= FFMAX(remaining, 0);
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}
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if (s->maxsize>= 0 && remaining+1 < size) {
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av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
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size = remaining+1;
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}
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}
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return size;
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}
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/* Read the data in sane-sized chunks and append to pkt.
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* Return the number of bytes read or an error. */
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static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
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{
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int orig_size = pkt->size;
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int ret;
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do {
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int prev_size = pkt->size;
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int read_size;
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/* When the caller requests a lot of data, limit it to the amount
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* left in file or SANE_CHUNK_SIZE when it is not known. */
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read_size = size;
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if (read_size > SANE_CHUNK_SIZE/10) {
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read_size = ffio_limit(s, read_size);
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// If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
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if (s->maxsize < 0)
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read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
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}
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ret = av_grow_packet(pkt, read_size);
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if (ret < 0)
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break;
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ret = avio_read(s, pkt->data + prev_size, read_size);
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if (ret != read_size) {
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av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
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break;
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}
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size -= read_size;
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} while (size > 0);
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if (size > 0)
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pkt->flags |= AV_PKT_FLAG_CORRUPT;
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if (!pkt->size)
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av_packet_unref(pkt);
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return pkt->size > orig_size ? pkt->size - orig_size : ret;
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}
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int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
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{
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av_init_packet(pkt);
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pkt->data = NULL;
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pkt->size = 0;
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pkt->pos = avio_tell(s);
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return append_packet_chunked(s, pkt, size);
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}
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int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
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{
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if (!pkt->size)
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return av_get_packet(s, pkt, size);
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return append_packet_chunked(s, pkt, size);
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}
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int av_filename_number_test(const char *filename)
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{
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char buf[1024];
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return filename &&
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(av_get_frame_filename(buf, sizeof(buf), filename, 1) >= 0);
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}
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static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st,
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AVProbeData *pd)
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{
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static const struct {
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const char *name;
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enum AVCodecID id;
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enum AVMediaType type;
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} fmt_id_type[] = {
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{ "aac", AV_CODEC_ID_AAC, AVMEDIA_TYPE_AUDIO },
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{ "ac3", AV_CODEC_ID_AC3, AVMEDIA_TYPE_AUDIO },
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{ "aptx", AV_CODEC_ID_APTX, AVMEDIA_TYPE_AUDIO },
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{ "dts", AV_CODEC_ID_DTS, AVMEDIA_TYPE_AUDIO },
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{ "dvbsub", AV_CODEC_ID_DVB_SUBTITLE,AVMEDIA_TYPE_SUBTITLE },
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{ "dvbtxt", AV_CODEC_ID_DVB_TELETEXT,AVMEDIA_TYPE_SUBTITLE },
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{ "eac3", AV_CODEC_ID_EAC3, AVMEDIA_TYPE_AUDIO },
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{ "h264", AV_CODEC_ID_H264, AVMEDIA_TYPE_VIDEO },
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{ "hevc", AV_CODEC_ID_HEVC, AVMEDIA_TYPE_VIDEO },
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{ "loas", AV_CODEC_ID_AAC_LATM, AVMEDIA_TYPE_AUDIO },
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{ "m4v", AV_CODEC_ID_MPEG4, AVMEDIA_TYPE_VIDEO },
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{ "mjpeg_2000",AV_CODEC_ID_JPEG2000, AVMEDIA_TYPE_VIDEO },
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{ "mp3", AV_CODEC_ID_MP3, AVMEDIA_TYPE_AUDIO },
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{ "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
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{ "truehd", AV_CODEC_ID_TRUEHD, AVMEDIA_TYPE_AUDIO },
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{ 0 }
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};
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int score;
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const AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
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if (fmt) {
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int i;
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av_log(s, AV_LOG_DEBUG,
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"Probe with size=%d, packets=%d detected %s with score=%d\n",
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pd->buf_size, s->max_probe_packets - st->probe_packets,
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fmt->name, score);
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for (i = 0; fmt_id_type[i].name; i++) {
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if (!strcmp(fmt->name, fmt_id_type[i].name)) {
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if (fmt_id_type[i].type != AVMEDIA_TYPE_AUDIO &&
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st->codecpar->sample_rate)
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continue;
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if (st->request_probe > score &&
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st->codecpar->codec_id != fmt_id_type[i].id)
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continue;
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st->codecpar->codec_id = fmt_id_type[i].id;
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st->codecpar->codec_type = fmt_id_type[i].type;
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st->internal->need_context_update = 1;
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#if FF_API_LAVF_AVCTX
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FF_DISABLE_DEPRECATION_WARNINGS
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st->codec->codec_type = st->codecpar->codec_type;
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st->codec->codec_id = st->codecpar->codec_id;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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return score;
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}
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}
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}
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return 0;
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}
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/************************************************************/
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/* input media file */
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int av_demuxer_open(AVFormatContext *ic) {
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int err;
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if (ic->format_whitelist && av_match_list(ic->iformat->name, ic->format_whitelist, ',') <= 0) {
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av_log(ic, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", ic->format_whitelist);
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return AVERROR(EINVAL);
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}
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if (ic->iformat->read_header) {
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err = ic->iformat->read_header(ic);
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if (err < 0)
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return err;
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}
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if (ic->pb && !ic->internal->data_offset)
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ic->internal->data_offset = avio_tell(ic->pb);
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return 0;
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}
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/* Open input file and probe the format if necessary. */
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static int init_input(AVFormatContext *s, const char *filename,
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AVDictionary **options)
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{
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int ret;
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AVProbeData pd = { filename, NULL, 0 };
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int score = AVPROBE_SCORE_RETRY;
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if (s->pb) {
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s->flags |= AVFMT_FLAG_CUSTOM_IO;
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if (!s->iformat)
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return av_probe_input_buffer2(s->pb, &s->iformat, filename,
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s, 0, s->format_probesize);
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else if (s->iformat->flags & AVFMT_NOFILE)
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av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
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"will be ignored with AVFMT_NOFILE format.\n");
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return 0;
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}
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|
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if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
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(!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
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return score;
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|
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if ((ret = s->io_open(s, &s->pb, filename, AVIO_FLAG_READ | s->avio_flags, options)) < 0)
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return ret;
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|
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if (s->iformat)
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return 0;
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return av_probe_input_buffer2(s->pb, &s->iformat, filename,
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s, 0, s->format_probesize);
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}
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|
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int ff_packet_list_put(AVPacketList **packet_buffer,
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AVPacketList **plast_pktl,
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AVPacket *pkt, int flags)
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{
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AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
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int ret;
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if (!pktl)
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return AVERROR(ENOMEM);
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|
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if (flags & FF_PACKETLIST_FLAG_REF_PACKET) {
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if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
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av_free(pktl);
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return ret;
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}
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} else {
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ret = av_packet_make_refcounted(pkt);
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if (ret < 0) {
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av_free(pktl);
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return ret;
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}
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av_packet_move_ref(&pktl->pkt, pkt);
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}
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if (*packet_buffer)
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(*plast_pktl)->next = pktl;
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else
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*packet_buffer = pktl;
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/* Add the packet in the buffered packet list. */
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*plast_pktl = pktl;
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return 0;
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}
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|
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int avformat_queue_attached_pictures(AVFormatContext *s)
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{
|
|
int i, ret;
|
|
for (i = 0; i < s->nb_streams; i++)
|
|
if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
|
|
s->streams[i]->discard < AVDISCARD_ALL) {
|
|
if (s->streams[i]->attached_pic.size <= 0) {
|
|
av_log(s, AV_LOG_WARNING,
|
|
"Attached picture on stream %d has invalid size, "
|
|
"ignoring\n", i);
|
|
continue;
|
|
}
|
|
|
|
ret = ff_packet_list_put(&s->internal->raw_packet_buffer,
|
|
&s->internal->raw_packet_buffer_end,
|
|
&s->streams[i]->attached_pic,
|
|
FF_PACKETLIST_FLAG_REF_PACKET);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int update_stream_avctx(AVFormatContext *s)
|
|
{
|
|
int i, ret;
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
|
|
if (!st->internal->need_context_update)
|
|
continue;
|
|
|
|
/* close parser, because it depends on the codec */
|
|
if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
|
|
av_parser_close(st->parser);
|
|
st->parser = NULL;
|
|
}
|
|
|
|
/* update internal codec context, for the parser */
|
|
ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
#if FF_API_LAVF_AVCTX
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
/* update deprecated public codec context */
|
|
ret = avcodec_parameters_to_context(st->codec, st->codecpar);
|
|
if (ret < 0)
|
|
return ret;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
st->internal->need_context_update = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
int avformat_open_input(AVFormatContext **ps, const char *filename,
|
|
ff_const59 AVInputFormat *fmt, AVDictionary **options)
|
|
{
|
|
AVFormatContext *s = *ps;
|
|
int i, ret = 0;
|
|
AVDictionary *tmp = NULL;
|
|
ID3v2ExtraMeta *id3v2_extra_meta = NULL;
|
|
|
|
if (!s && !(s = avformat_alloc_context()))
|
|
return AVERROR(ENOMEM);
|
|
if (!s->av_class) {
|
|
av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (fmt)
|
|
s->iformat = fmt;
|
|
|
|
if (options)
|
|
av_dict_copy(&tmp, *options, 0);
|
|
|
|
if (s->pb) // must be before any goto fail
|
|
s->flags |= AVFMT_FLAG_CUSTOM_IO;
|
|
|
|
if ((ret = av_opt_set_dict(s, &tmp)) < 0)
|
|
goto fail;
|
|
|
|
if (!(s->url = av_strdup(filename ? filename : ""))) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
|
|
#if FF_API_FORMAT_FILENAME
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
if ((ret = init_input(s, filename, &tmp)) < 0)
|
|
goto fail;
|
|
s->probe_score = ret;
|
|
|
|
if (!s->protocol_whitelist && s->pb && s->pb->protocol_whitelist) {
|
|
s->protocol_whitelist = av_strdup(s->pb->protocol_whitelist);
|
|
if (!s->protocol_whitelist) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if (!s->protocol_blacklist && s->pb && s->pb->protocol_blacklist) {
|
|
s->protocol_blacklist = av_strdup(s->pb->protocol_blacklist);
|
|
if (!s->protocol_blacklist) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
|
|
av_log(s, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", s->format_whitelist);
|
|
ret = AVERROR(EINVAL);
|
|
goto fail;
|
|
}
|
|
|
|
avio_skip(s->pb, s->skip_initial_bytes);
|
|
|
|
/* Check filename in case an image number is expected. */
|
|
if (s->iformat->flags & AVFMT_NEEDNUMBER) {
|
|
if (!av_filename_number_test(filename)) {
|
|
ret = AVERROR(EINVAL);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
s->duration = s->start_time = AV_NOPTS_VALUE;
|
|
|
|
/* Allocate private data. */
|
|
if (s->iformat->priv_data_size > 0) {
|
|
if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
if (s->iformat->priv_class) {
|
|
*(const AVClass **) s->priv_data = s->iformat->priv_class;
|
|
av_opt_set_defaults(s->priv_data);
|
|
if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
/* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
|
|
if (s->pb)
|
|
ff_id3v2_read_dict(s->pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
|
|
|
|
|
|
if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
|
|
if ((ret = s->iformat->read_header(s)) < 0)
|
|
goto fail;
|
|
|
|
if (!s->metadata) {
|
|
s->metadata = s->internal->id3v2_meta;
|
|
s->internal->id3v2_meta = NULL;
|
|
} else if (s->internal->id3v2_meta) {
|
|
av_log(s, AV_LOG_WARNING, "Discarding ID3 tags because more suitable tags were found.\n");
|
|
av_dict_free(&s->internal->id3v2_meta);
|
|
}
|
|
|
|
if (id3v2_extra_meta) {
|
|
if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
|
|
!strcmp(s->iformat->name, "tta") || !strcmp(s->iformat->name, "wav")) {
|
|
if ((ret = ff_id3v2_parse_apic(s, id3v2_extra_meta)) < 0)
|
|
goto close;
|
|
if ((ret = ff_id3v2_parse_chapters(s, id3v2_extra_meta)) < 0)
|
|
goto close;
|
|
if ((ret = ff_id3v2_parse_priv(s, id3v2_extra_meta)) < 0)
|
|
goto close;
|
|
} else
|
|
av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
|
|
}
|
|
ff_id3v2_free_extra_meta(&id3v2_extra_meta);
|
|
|
|
if ((ret = avformat_queue_attached_pictures(s)) < 0)
|
|
goto close;
|
|
|
|
if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
|
|
s->internal->data_offset = avio_tell(s->pb);
|
|
|
|
s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
|
|
|
|
update_stream_avctx(s);
|
|
|
|
for (i = 0; i < s->nb_streams; i++)
|
|
s->streams[i]->internal->orig_codec_id = s->streams[i]->codecpar->codec_id;
|
|
|
|
if (options) {
|
|
av_dict_free(options);
|
|
*options = tmp;
|
|
}
|
|
*ps = s;
|
|
return 0;
|
|
|
|
close:
|
|
if (s->iformat->read_close)
|
|
s->iformat->read_close(s);
|
|
fail:
|
|
ff_id3v2_free_extra_meta(&id3v2_extra_meta);
|
|
av_dict_free(&tmp);
|
|
if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
|
|
avio_closep(&s->pb);
|
|
avformat_free_context(s);
|
|
*ps = NULL;
|
|
return ret;
|
|
}
|
|
|
|
/*******************************************************/
|
|
|
|
static void force_codec_ids(AVFormatContext *s, AVStream *st)
|
|
{
|
|
switch (st->codecpar->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
if (s->video_codec_id)
|
|
st->codecpar->codec_id = s->video_codec_id;
|
|
break;
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
if (s->audio_codec_id)
|
|
st->codecpar->codec_id = s->audio_codec_id;
|
|
break;
|
|
case AVMEDIA_TYPE_SUBTITLE:
|
|
if (s->subtitle_codec_id)
|
|
st->codecpar->codec_id = s->subtitle_codec_id;
|
|
break;
|
|
case AVMEDIA_TYPE_DATA:
|
|
if (s->data_codec_id)
|
|
st->codecpar->codec_id = s->data_codec_id;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
|
|
{
|
|
if (st->request_probe>0) {
|
|
AVProbeData *pd = &st->probe_data;
|
|
int end;
|
|
av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
|
|
--st->probe_packets;
|
|
|
|
if (pkt) {
|
|
uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
|
|
if (!new_buf) {
|
|
av_log(s, AV_LOG_WARNING,
|
|
"Failed to reallocate probe buffer for stream %d\n",
|
|
st->index);
|
|
goto no_packet;
|
|
}
|
|
pd->buf = new_buf;
|
|
memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
|
|
pd->buf_size += pkt->size;
|
|
memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
|
|
} else {
|
|
no_packet:
|
|
st->probe_packets = 0;
|
|
if (!pd->buf_size) {
|
|
av_log(s, AV_LOG_WARNING,
|
|
"nothing to probe for stream %d\n", st->index);
|
|
}
|
|
}
|
|
|
|
end= s->internal->raw_packet_buffer_remaining_size <= 0
|
|
|| st->probe_packets<= 0;
|
|
|
|
if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
|
|
int score = set_codec_from_probe_data(s, st, pd);
|
|
if ( (st->codecpar->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
|
|
|| end) {
|
|
pd->buf_size = 0;
|
|
av_freep(&pd->buf);
|
|
st->request_probe = -1;
|
|
if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
|
|
av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
|
|
} else
|
|
av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
|
|
}
|
|
force_codec_ids(s, st);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
|
|
{
|
|
int64_t ref = pkt->dts;
|
|
int i, pts_wrap_behavior;
|
|
int64_t pts_wrap_reference;
|
|
AVProgram *first_program;
|
|
|
|
if (ref == AV_NOPTS_VALUE)
|
|
ref = pkt->pts;
|
|
if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
|
|
return 0;
|
|
ref &= (1LL << st->pts_wrap_bits)-1;
|
|
|
|
// reference time stamp should be 60 s before first time stamp
|
|
pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
|
|
// if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
|
|
pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
|
|
(ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
|
|
AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
|
|
|
|
first_program = av_find_program_from_stream(s, NULL, stream_index);
|
|
|
|
if (!first_program) {
|
|
int default_stream_index = av_find_default_stream_index(s);
|
|
if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
if (av_find_program_from_stream(s, NULL, i))
|
|
continue;
|
|
s->streams[i]->pts_wrap_reference = pts_wrap_reference;
|
|
s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
|
|
}
|
|
}
|
|
else {
|
|
st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
|
|
st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
|
|
}
|
|
}
|
|
else {
|
|
AVProgram *program = first_program;
|
|
while (program) {
|
|
if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
|
|
pts_wrap_reference = program->pts_wrap_reference;
|
|
pts_wrap_behavior = program->pts_wrap_behavior;
|
|
break;
|
|
}
|
|
program = av_find_program_from_stream(s, program, stream_index);
|
|
}
|
|
|
|
// update every program with differing pts_wrap_reference
|
|
program = first_program;
|
|
while (program) {
|
|
if (program->pts_wrap_reference != pts_wrap_reference) {
|
|
for (i = 0; i<program->nb_stream_indexes; i++) {
|
|
s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
|
|
s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
|
|
}
|
|
|
|
program->pts_wrap_reference = pts_wrap_reference;
|
|
program->pts_wrap_behavior = pts_wrap_behavior;
|
|
}
|
|
program = av_find_program_from_stream(s, program, stream_index);
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
int ret, i, err;
|
|
AVStream *st;
|
|
|
|
pkt->data = NULL;
|
|
pkt->size = 0;
|
|
av_init_packet(pkt);
|
|
|
|
for (;;) {
|
|
AVPacketList *pktl = s->internal->raw_packet_buffer;
|
|
const AVPacket *pkt1;
|
|
|
|
if (pktl) {
|
|
st = s->streams[pktl->pkt.stream_index];
|
|
if (s->internal->raw_packet_buffer_remaining_size <= 0)
|
|
if ((err = probe_codec(s, st, NULL)) < 0)
|
|
return err;
|
|
if (st->request_probe <= 0) {
|
|
ff_packet_list_get(&s->internal->raw_packet_buffer,
|
|
&s->internal->raw_packet_buffer_end, pkt);
|
|
s->internal->raw_packet_buffer_remaining_size += pkt->size;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
ret = s->iformat->read_packet(s, pkt);
|
|
if (ret < 0) {
|
|
av_packet_unref(pkt);
|
|
|
|
/* Some demuxers return FFERROR_REDO when they consume
|
|
data and discard it (ignored streams, junk, extradata).
|
|
We must re-call the demuxer to get the real packet. */
|
|
if (ret == FFERROR_REDO)
|
|
continue;
|
|
if (!pktl || ret == AVERROR(EAGAIN))
|
|
return ret;
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
st = s->streams[i];
|
|
if (st->probe_packets || st->request_probe > 0)
|
|
if ((err = probe_codec(s, st, NULL)) < 0)
|
|
return err;
|
|
av_assert0(st->request_probe <= 0);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
err = av_packet_make_refcounted(pkt);
|
|
if (err < 0) {
|
|
av_packet_unref(pkt);
|
|
return err;
|
|
}
|
|
|
|
if (pkt->flags & AV_PKT_FLAG_CORRUPT) {
|
|
av_log(s, AV_LOG_WARNING,
|
|
"Packet corrupt (stream = %d, dts = %s)",
|
|
pkt->stream_index, av_ts2str(pkt->dts));
|
|
if (s->flags & AVFMT_FLAG_DISCARD_CORRUPT) {
|
|
av_log(s, AV_LOG_WARNING, ", dropping it.\n");
|
|
av_packet_unref(pkt);
|
|
continue;
|
|
}
|
|
av_log(s, AV_LOG_WARNING, ".\n");
|
|
}
|
|
|
|
av_assert0(pkt->stream_index < (unsigned)s->nb_streams &&
|
|
"Invalid stream index.\n");
|
|
|
|
st = s->streams[pkt->stream_index];
|
|
|
|
if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
|
|
// correct first time stamps to negative values
|
|
if (!is_relative(st->first_dts))
|
|
st->first_dts = wrap_timestamp(st, st->first_dts);
|
|
if (!is_relative(st->start_time))
|
|
st->start_time = wrap_timestamp(st, st->start_time);
|
|
if (!is_relative(st->cur_dts))
|
|
st->cur_dts = wrap_timestamp(st, st->cur_dts);
|
|
}
|
|
|
|
pkt->dts = wrap_timestamp(st, pkt->dts);
|
|
pkt->pts = wrap_timestamp(st, pkt->pts);
|
|
|
|
force_codec_ids(s, st);
|
|
|
|
/* TODO: audio: time filter; video: frame reordering (pts != dts) */
|
|
if (s->use_wallclock_as_timestamps)
|
|
pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
|
|
|
|
if (!pktl && st->request_probe <= 0)
|
|
return ret;
|
|
|
|
err = ff_packet_list_put(&s->internal->raw_packet_buffer,
|
|
&s->internal->raw_packet_buffer_end,
|
|
pkt, 0);
|
|
if (err < 0) {
|
|
av_packet_unref(pkt);
|
|
return err;
|
|
}
|
|
pkt1 = &s->internal->raw_packet_buffer_end->pkt;
|
|
s->internal->raw_packet_buffer_remaining_size -= pkt1->size;
|
|
|
|
if ((err = probe_codec(s, st, pkt1)) < 0)
|
|
return err;
|
|
}
|
|
}
|
|
|
|
|
|
/**********************************************************/
|
|
|
|
static int determinable_frame_size(AVCodecContext *avctx)
|
|
{
|
|
switch(avctx->codec_id) {
|
|
case AV_CODEC_ID_MP1:
|
|
case AV_CODEC_ID_MP2:
|
|
case AV_CODEC_ID_MP3:
|
|
case AV_CODEC_ID_CODEC2:
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Return the frame duration in seconds. Return 0 if not available.
|
|
*/
|
|
void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
|
|
AVCodecParserContext *pc, AVPacket *pkt)
|
|
{
|
|
AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
|
|
av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
|
|
int frame_size, sample_rate;
|
|
|
|
#if FF_API_LAVF_AVCTX
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
|
|
codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
*pnum = 0;
|
|
*pden = 0;
|
|
switch (st->codecpar->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
if (st->r_frame_rate.num && !pc && s->iformat) {
|
|
*pnum = st->r_frame_rate.den;
|
|
*pden = st->r_frame_rate.num;
|
|
} else if (st->time_base.num * 1000LL > st->time_base.den) {
|
|
*pnum = st->time_base.num;
|
|
*pden = st->time_base.den;
|
|
} else if (codec_framerate.den * 1000LL > codec_framerate.num) {
|
|
av_assert0(st->internal->avctx->ticks_per_frame);
|
|
av_reduce(pnum, pden,
|
|
codec_framerate.den,
|
|
codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
|
|
INT_MAX);
|
|
|
|
if (pc && pc->repeat_pict) {
|
|
av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
|
|
av_reduce(pnum, pden,
|
|
(*pnum) * (1LL + pc->repeat_pict),
|
|
(*pden),
|
|
INT_MAX);
|
|
}
|
|
/* If this codec can be interlaced or progressive then we need
|
|
* a parser to compute duration of a packet. Thus if we have
|
|
* no parser in such case leave duration undefined. */
|
|
if (st->internal->avctx->ticks_per_frame > 1 && !pc)
|
|
*pnum = *pden = 0;
|
|
}
|
|
break;
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
if (st->internal->avctx_inited) {
|
|
frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
|
|
sample_rate = st->internal->avctx->sample_rate;
|
|
} else {
|
|
frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
|
|
sample_rate = st->codecpar->sample_rate;
|
|
}
|
|
if (frame_size <= 0 || sample_rate <= 0)
|
|
break;
|
|
*pnum = frame_size;
|
|
*pden = sample_rate;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
int ff_is_intra_only(enum AVCodecID id)
|
|
{
|
|
const AVCodecDescriptor *d = avcodec_descriptor_get(id);
|
|
if (!d)
|
|
return 0;
|
|
if ((d->type == AVMEDIA_TYPE_VIDEO || d->type == AVMEDIA_TYPE_AUDIO) &&
|
|
!(d->props & AV_CODEC_PROP_INTRA_ONLY))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
static int has_decode_delay_been_guessed(AVStream *st)
|
|
{
|
|
if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
|
|
if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
|
|
return 1;
|
|
#if CONFIG_H264_DECODER
|
|
if (st->internal->avctx->has_b_frames &&
|
|
avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
|
|
return 1;
|
|
#endif
|
|
if (st->internal->avctx->has_b_frames<3)
|
|
return st->nb_decoded_frames >= 7;
|
|
else if (st->internal->avctx->has_b_frames<4)
|
|
return st->nb_decoded_frames >= 18;
|
|
else
|
|
return st->nb_decoded_frames >= 20;
|
|
}
|
|
|
|
static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
|
|
{
|
|
if (pktl->next)
|
|
return pktl->next;
|
|
if (pktl == s->internal->packet_buffer_end)
|
|
return s->internal->parse_queue;
|
|
return NULL;
|
|
}
|
|
|
|
static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
|
|
int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
|
|
st->codecpar->codec_id != AV_CODEC_ID_HEVC;
|
|
|
|
if(!onein_oneout) {
|
|
int delay = st->internal->avctx->has_b_frames;
|
|
int i;
|
|
|
|
if (dts == AV_NOPTS_VALUE) {
|
|
int64_t best_score = INT64_MAX;
|
|
for (i = 0; i<delay; i++) {
|
|
if (st->pts_reorder_error_count[i]) {
|
|
int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
|
|
if (score < best_score) {
|
|
best_score = score;
|
|
dts = pts_buffer[i];
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
for (i = 0; i<delay; i++) {
|
|
if (pts_buffer[i] != AV_NOPTS_VALUE) {
|
|
int64_t diff = FFABS(pts_buffer[i] - dts)
|
|
+ (uint64_t)st->pts_reorder_error[i];
|
|
diff = FFMAX(diff, st->pts_reorder_error[i]);
|
|
st->pts_reorder_error[i] = diff;
|
|
st->pts_reorder_error_count[i]++;
|
|
if (st->pts_reorder_error_count[i] > 250) {
|
|
st->pts_reorder_error[i] >>= 1;
|
|
st->pts_reorder_error_count[i] >>= 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (dts == AV_NOPTS_VALUE)
|
|
dts = pts_buffer[0];
|
|
|
|
return dts;
|
|
}
|
|
|
|
/**
|
|
* Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
|
|
* of the packets in a window.
|
|
*/
|
|
static void update_dts_from_pts(AVFormatContext *s, int stream_index,
|
|
AVPacketList *pkt_buffer)
|
|
{
|
|
AVStream *st = s->streams[stream_index];
|
|
int delay = st->internal->avctx->has_b_frames;
|
|
int i;
|
|
|
|
int64_t pts_buffer[MAX_REORDER_DELAY+1];
|
|
|
|
for (i = 0; i<MAX_REORDER_DELAY+1; i++)
|
|
pts_buffer[i] = AV_NOPTS_VALUE;
|
|
|
|
for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
|
|
if (pkt_buffer->pkt.stream_index != stream_index)
|
|
continue;
|
|
|
|
if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
|
|
pts_buffer[0] = pkt_buffer->pkt.pts;
|
|
for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
|
|
FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
|
|
|
|
pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void update_initial_timestamps(AVFormatContext *s, int stream_index,
|
|
int64_t dts, int64_t pts, AVPacket *pkt)
|
|
{
|
|
AVStream *st = s->streams[stream_index];
|
|
AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
|
|
AVPacketList *pktl_it;
|
|
|
|
uint64_t shift;
|
|
|
|
if (st->first_dts != AV_NOPTS_VALUE ||
|
|
dts == AV_NOPTS_VALUE ||
|
|
st->cur_dts == AV_NOPTS_VALUE ||
|
|
st->cur_dts < INT_MIN + RELATIVE_TS_BASE ||
|
|
is_relative(dts))
|
|
return;
|
|
|
|
st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
|
|
st->cur_dts = dts;
|
|
shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
|
|
|
|
if (is_relative(pts))
|
|
pts += shift;
|
|
|
|
for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
|
|
if (pktl_it->pkt.stream_index != stream_index)
|
|
continue;
|
|
if (is_relative(pktl_it->pkt.pts))
|
|
pktl_it->pkt.pts += shift;
|
|
|
|
if (is_relative(pktl_it->pkt.dts))
|
|
pktl_it->pkt.dts += shift;
|
|
|
|
if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
|
|
st->start_time = pktl_it->pkt.pts;
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
|
|
st->start_time = av_sat_add64(st->start_time, av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base));
|
|
}
|
|
}
|
|
|
|
if (has_decode_delay_been_guessed(st)) {
|
|
update_dts_from_pts(s, stream_index, pktl);
|
|
}
|
|
|
|
if (st->start_time == AV_NOPTS_VALUE) {
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || !(pkt->flags & AV_PKT_FLAG_DISCARD)) {
|
|
st->start_time = pts;
|
|
}
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
|
|
st->start_time = av_sat_add64(st->start_time, av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base));
|
|
}
|
|
}
|
|
|
|
static void update_initial_durations(AVFormatContext *s, AVStream *st,
|
|
int stream_index, int64_t duration)
|
|
{
|
|
AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
|
|
int64_t cur_dts = RELATIVE_TS_BASE;
|
|
|
|
if (st->first_dts != AV_NOPTS_VALUE) {
|
|
if (st->update_initial_durations_done)
|
|
return;
|
|
st->update_initial_durations_done = 1;
|
|
cur_dts = st->first_dts;
|
|
for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
|
|
if (pktl->pkt.stream_index == stream_index) {
|
|
if (pktl->pkt.pts != pktl->pkt.dts ||
|
|
pktl->pkt.dts != AV_NOPTS_VALUE ||
|
|
pktl->pkt.duration)
|
|
break;
|
|
cur_dts -= duration;
|
|
}
|
|
}
|
|
if (pktl && pktl->pkt.dts != st->first_dts) {
|
|
av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
|
|
av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
|
|
return;
|
|
}
|
|
if (!pktl) {
|
|
av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
|
|
return;
|
|
}
|
|
pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
|
|
st->first_dts = cur_dts;
|
|
} else if (st->cur_dts != RELATIVE_TS_BASE)
|
|
return;
|
|
|
|
for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
|
|
if (pktl->pkt.stream_index != stream_index)
|
|
continue;
|
|
if ((pktl->pkt.pts == pktl->pkt.dts ||
|
|
pktl->pkt.pts == AV_NOPTS_VALUE) &&
|
|
(pktl->pkt.dts == AV_NOPTS_VALUE ||
|
|
pktl->pkt.dts == st->first_dts ||
|
|
pktl->pkt.dts == RELATIVE_TS_BASE) &&
|
|
!pktl->pkt.duration) {
|
|
pktl->pkt.dts = cur_dts;
|
|
if (!st->internal->avctx->has_b_frames)
|
|
pktl->pkt.pts = cur_dts;
|
|
// if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
|
|
pktl->pkt.duration = duration;
|
|
} else
|
|
break;
|
|
cur_dts = pktl->pkt.dts + pktl->pkt.duration;
|
|
}
|
|
if (!pktl)
|
|
st->cur_dts = cur_dts;
|
|
}
|
|
|
|
static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
|
|
AVCodecParserContext *pc, AVPacket *pkt,
|
|
int64_t next_dts, int64_t next_pts)
|
|
{
|
|
int num, den, presentation_delayed, delay, i;
|
|
int64_t offset;
|
|
AVRational duration;
|
|
int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
|
|
st->codecpar->codec_id != AV_CODEC_ID_HEVC;
|
|
|
|
if (s->flags & AVFMT_FLAG_NOFILLIN)
|
|
return;
|
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
|
|
if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
|
|
if (st->last_dts_for_order_check <= pkt->dts) {
|
|
st->dts_ordered++;
|
|
} else {
|
|
av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
|
|
"DTS %"PRIi64" < %"PRIi64" out of order\n",
|
|
pkt->dts,
|
|
st->last_dts_for_order_check);
|
|
st->dts_misordered++;
|
|
}
|
|
if (st->dts_ordered + st->dts_misordered > 250) {
|
|
st->dts_ordered >>= 1;
|
|
st->dts_misordered >>= 1;
|
|
}
|
|
}
|
|
|
|
st->last_dts_for_order_check = pkt->dts;
|
|
if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
|
|
pkt->dts = AV_NOPTS_VALUE;
|
|
}
|
|
|
|
if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
|
|
pkt->dts = AV_NOPTS_VALUE;
|
|
|
|
if (pc && pc->pict_type == AV_PICTURE_TYPE_B
|
|
&& !st->internal->avctx->has_b_frames)
|
|
//FIXME Set low_delay = 0 when has_b_frames = 1
|
|
st->internal->avctx->has_b_frames = 1;
|
|
|
|
/* do we have a video B-frame ? */
|
|
delay = st->internal->avctx->has_b_frames;
|
|
presentation_delayed = 0;
|
|
|
|
/* XXX: need has_b_frame, but cannot get it if the codec is
|
|
* not initialized */
|
|
if (delay &&
|
|
pc && pc->pict_type != AV_PICTURE_TYPE_B)
|
|
presentation_delayed = 1;
|
|
|
|
if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
|
|
st->pts_wrap_bits < 63 &&
|
|
pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
|
|
if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
|
|
pkt->dts -= 1LL << st->pts_wrap_bits;
|
|
} else
|
|
pkt->pts += 1LL << st->pts_wrap_bits;
|
|
}
|
|
|
|
/* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
|
|
* We take the conservative approach and discard both.
|
|
* Note: If this is misbehaving for an H.264 file, then possibly
|
|
* presentation_delayed is not set correctly. */
|
|
if (delay == 1 && pkt->dts == pkt->pts &&
|
|
pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
|
|
av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
|
|
if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
|
|
&& strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
|
|
pkt->dts = AV_NOPTS_VALUE;
|
|
}
|
|
|
|
duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
|
|
if (pkt->duration <= 0) {
|
|
ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
|
|
if (den && num) {
|
|
duration = (AVRational) {num, den};
|
|
pkt->duration = av_rescale_rnd(1,
|
|
num * (int64_t) st->time_base.den,
|
|
den * (int64_t) st->time_base.num,
|
|
AV_ROUND_DOWN);
|
|
}
|
|
}
|
|
|
|
if (pkt->duration > 0 && (s->internal->packet_buffer || s->internal->parse_queue))
|
|
update_initial_durations(s, st, pkt->stream_index, pkt->duration);
|
|
|
|
/* Correct timestamps with byte offset if demuxers only have timestamps
|
|
* on packet boundaries */
|
|
if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
|
|
/* this will estimate bitrate based on this frame's duration and size */
|
|
offset = av_rescale(pc->offset, pkt->duration, pkt->size);
|
|
if (pkt->pts != AV_NOPTS_VALUE)
|
|
pkt->pts += offset;
|
|
if (pkt->dts != AV_NOPTS_VALUE)
|
|
pkt->dts += offset;
|
|
}
|
|
|
|
/* This may be redundant, but it should not hurt. */
|
|
if (pkt->dts != AV_NOPTS_VALUE &&
|
|
pkt->pts != AV_NOPTS_VALUE &&
|
|
pkt->pts > pkt->dts)
|
|
presentation_delayed = 1;
|
|
|
|
if (s->debug & FF_FDEBUG_TS)
|
|
av_log(s, AV_LOG_DEBUG,
|
|
"IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
|
|
presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
|
|
pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
|
|
|
|
/* Interpolate PTS and DTS if they are not present. We skip H264
|
|
* currently because delay and has_b_frames are not reliably set. */
|
|
if ((delay == 0 || (delay == 1 && pc)) &&
|
|
onein_oneout) {
|
|
if (presentation_delayed) {
|
|
/* DTS = decompression timestamp */
|
|
/* PTS = presentation timestamp */
|
|
if (pkt->dts == AV_NOPTS_VALUE)
|
|
pkt->dts = st->last_IP_pts;
|
|
update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
|
|
if (pkt->dts == AV_NOPTS_VALUE)
|
|
pkt->dts = st->cur_dts;
|
|
|
|
/* This is tricky: the dts must be incremented by the duration
|
|
* of the frame we are displaying, i.e. the last I- or P-frame. */
|
|
if (st->last_IP_duration == 0 && (uint64_t)pkt->duration <= INT32_MAX)
|
|
st->last_IP_duration = pkt->duration;
|
|
if (pkt->dts != AV_NOPTS_VALUE)
|
|
st->cur_dts = av_sat_add64(pkt->dts, st->last_IP_duration);
|
|
if (pkt->dts != AV_NOPTS_VALUE &&
|
|
pkt->pts == AV_NOPTS_VALUE &&
|
|
st->last_IP_duration > 0 &&
|
|
((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
|
|
next_dts != next_pts &&
|
|
next_pts != AV_NOPTS_VALUE)
|
|
pkt->pts = next_dts;
|
|
|
|
if ((uint64_t)pkt->duration <= INT32_MAX)
|
|
st->last_IP_duration = pkt->duration;
|
|
st->last_IP_pts = pkt->pts;
|
|
/* Cannot compute PTS if not present (we can compute it only
|
|
* by knowing the future. */
|
|
} else if (pkt->pts != AV_NOPTS_VALUE ||
|
|
pkt->dts != AV_NOPTS_VALUE ||
|
|
pkt->duration > 0 ) {
|
|
|
|
/* presentation is not delayed : PTS and DTS are the same */
|
|
if (pkt->pts == AV_NOPTS_VALUE)
|
|
pkt->pts = pkt->dts;
|
|
update_initial_timestamps(s, pkt->stream_index, pkt->pts,
|
|
pkt->pts, pkt);
|
|
if (pkt->pts == AV_NOPTS_VALUE)
|
|
pkt->pts = st->cur_dts;
|
|
pkt->dts = pkt->pts;
|
|
if (pkt->pts != AV_NOPTS_VALUE && duration.num >= 0)
|
|
st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
|
|
}
|
|
}
|
|
|
|
if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
|
|
st->pts_buffer[0] = pkt->pts;
|
|
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]);
|
|
|
|
if(has_decode_delay_been_guessed(st))
|
|
pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
|
|
}
|
|
// We skipped it above so we try here.
|
|
if (!onein_oneout)
|
|
// This should happen on the first packet
|
|
update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
|
|
if (pkt->dts > st->cur_dts)
|
|
st->cur_dts = pkt->dts;
|
|
|
|
if (s->debug & FF_FDEBUG_TS)
|
|
av_log(s, AV_LOG_DEBUG, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s st:%d (%d)\n",
|
|
presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), st->index, st->id);
|
|
|
|
/* update flags */
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA || ff_is_intra_only(st->codecpar->codec_id))
|
|
pkt->flags |= AV_PKT_FLAG_KEY;
|
|
#if FF_API_CONVERGENCE_DURATION
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
if (pc)
|
|
pkt->convergence_duration = pc->convergence_duration;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
}
|
|
|
|
void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
|
|
{
|
|
AVPacketList *tmp = *pkt_buf;
|
|
|
|
while (tmp) {
|
|
AVPacketList *pktl = tmp;
|
|
tmp = pktl->next;
|
|
av_packet_unref(&pktl->pkt);
|
|
av_freep(&pktl);
|
|
}
|
|
*pkt_buf = NULL;
|
|
*pkt_buf_end = NULL;
|
|
}
|
|
|
|
/**
|
|
* Parse a packet, add all split parts to parse_queue.
|
|
*
|
|
* @param pkt Packet to parse; must not be NULL.
|
|
* @param flush Indicates whether to flush. If set, pkt must be blank.
|
|
*/
|
|
static int parse_packet(AVFormatContext *s, AVPacket *pkt,
|
|
int stream_index, int flush)
|
|
{
|
|
AVPacket out_pkt;
|
|
AVStream *st = s->streams[stream_index];
|
|
uint8_t *data = pkt->data;
|
|
int size = pkt->size;
|
|
int ret = 0, got_output = flush;
|
|
|
|
if (size || flush) {
|
|
av_init_packet(&out_pkt);
|
|
} else if (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
|
|
// preserve 0-size sync packets
|
|
compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
|
|
}
|
|
|
|
while (size > 0 || (flush && got_output)) {
|
|
int len;
|
|
int64_t next_pts = pkt->pts;
|
|
int64_t next_dts = pkt->dts;
|
|
|
|
len = av_parser_parse2(st->parser, st->internal->avctx,
|
|
&out_pkt.data, &out_pkt.size, data, size,
|
|
pkt->pts, pkt->dts, pkt->pos);
|
|
|
|
pkt->pts = pkt->dts = AV_NOPTS_VALUE;
|
|
pkt->pos = -1;
|
|
/* increment read pointer */
|
|
data += len;
|
|
size -= len;
|
|
|
|
got_output = !!out_pkt.size;
|
|
|
|
if (!out_pkt.size)
|
|
continue;
|
|
|
|
if (pkt->buf && out_pkt.data == pkt->data) {
|
|
/* reference pkt->buf only when out_pkt.data is guaranteed to point
|
|
* to data in it and not in the parser's internal buffer. */
|
|
/* XXX: Ensure this is the case with all parsers when st->parser->flags
|
|
* is PARSER_FLAG_COMPLETE_FRAMES and check for that instead? */
|
|
out_pkt.buf = av_buffer_ref(pkt->buf);
|
|
if (!out_pkt.buf) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
} else {
|
|
ret = av_packet_make_refcounted(&out_pkt);
|
|
if (ret < 0)
|
|
goto fail;
|
|
}
|
|
|
|
if (pkt->side_data) {
|
|
out_pkt.side_data = pkt->side_data;
|
|
out_pkt.side_data_elems = pkt->side_data_elems;
|
|
pkt->side_data = NULL;
|
|
pkt->side_data_elems = 0;
|
|
}
|
|
|
|
/* set the duration */
|
|
out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
if (st->internal->avctx->sample_rate > 0) {
|
|
out_pkt.duration =
|
|
av_rescale_q_rnd(st->parser->duration,
|
|
(AVRational) { 1, st->internal->avctx->sample_rate },
|
|
st->time_base,
|
|
AV_ROUND_DOWN);
|
|
}
|
|
}
|
|
|
|
out_pkt.stream_index = st->index;
|
|
out_pkt.pts = st->parser->pts;
|
|
out_pkt.dts = st->parser->dts;
|
|
out_pkt.pos = st->parser->pos;
|
|
out_pkt.flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
|
|
|
|
if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
|
|
out_pkt.pos = st->parser->frame_offset;
|
|
|
|
if (st->parser->key_frame == 1 ||
|
|
(st->parser->key_frame == -1 &&
|
|
st->parser->pict_type == AV_PICTURE_TYPE_I))
|
|
out_pkt.flags |= AV_PKT_FLAG_KEY;
|
|
|
|
if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
|
|
out_pkt.flags |= AV_PKT_FLAG_KEY;
|
|
|
|
compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
|
|
|
|
ret = ff_packet_list_put(&s->internal->parse_queue,
|
|
&s->internal->parse_queue_end,
|
|
&out_pkt, 0);
|
|
if (ret < 0) {
|
|
av_packet_unref(&out_pkt);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
/* end of the stream => close and free the parser */
|
|
if (flush) {
|
|
av_parser_close(st->parser);
|
|
st->parser = NULL;
|
|
}
|
|
|
|
fail:
|
|
av_packet_unref(pkt);
|
|
return ret;
|
|
}
|
|
|
|
int ff_packet_list_get(AVPacketList **pkt_buffer,
|
|
AVPacketList **pkt_buffer_end,
|
|
AVPacket *pkt)
|
|
{
|
|
AVPacketList *pktl;
|
|
av_assert0(*pkt_buffer);
|
|
pktl = *pkt_buffer;
|
|
*pkt = pktl->pkt;
|
|
*pkt_buffer = pktl->next;
|
|
if (!pktl->next)
|
|
*pkt_buffer_end = NULL;
|
|
av_freep(&pktl);
|
|
return 0;
|
|
}
|
|
|
|
static int64_t ts_to_samples(AVStream *st, int64_t ts)
|
|
{
|
|
return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
|
|
}
|
|
|
|
static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
int ret, i, got_packet = 0;
|
|
AVDictionary *metadata = NULL;
|
|
|
|
while (!got_packet && !s->internal->parse_queue) {
|
|
AVStream *st;
|
|
|
|
/* read next packet */
|
|
ret = ff_read_packet(s, pkt);
|
|
if (ret < 0) {
|
|
if (ret == AVERROR(EAGAIN))
|
|
return ret;
|
|
/* flush the parsers */
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
st = s->streams[i];
|
|
if (st->parser && st->need_parsing)
|
|
parse_packet(s, pkt, st->index, 1);
|
|
}
|
|
/* all remaining packets are now in parse_queue =>
|
|
* really terminate parsing */
|
|
break;
|
|
}
|
|
ret = 0;
|
|
st = s->streams[pkt->stream_index];
|
|
|
|
/* update context if required */
|
|
if (st->internal->need_context_update) {
|
|
if (avcodec_is_open(st->internal->avctx)) {
|
|
av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
|
|
avcodec_close(st->internal->avctx);
|
|
st->info->found_decoder = 0;
|
|
}
|
|
|
|
/* close parser, because it depends on the codec */
|
|
if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
|
|
av_parser_close(st->parser);
|
|
st->parser = NULL;
|
|
}
|
|
|
|
ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
|
|
if (ret < 0) {
|
|
av_packet_unref(pkt);
|
|
return ret;
|
|
}
|
|
|
|
#if FF_API_LAVF_AVCTX
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
/* update deprecated public codec context */
|
|
ret = avcodec_parameters_to_context(st->codec, st->codecpar);
|
|
if (ret < 0) {
|
|
av_packet_unref(pkt);
|
|
return ret;
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
st->internal->need_context_update = 0;
|
|
}
|
|
|
|
if (pkt->pts != AV_NOPTS_VALUE &&
|
|
pkt->dts != AV_NOPTS_VALUE &&
|
|
pkt->pts < pkt->dts) {
|
|
av_log(s, AV_LOG_WARNING,
|
|
"Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
|
|
pkt->stream_index,
|
|
av_ts2str(pkt->pts),
|
|
av_ts2str(pkt->dts),
|
|
pkt->size);
|
|
}
|
|
if (s->debug & FF_FDEBUG_TS)
|
|
av_log(s, AV_LOG_DEBUG,
|
|
"ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
|
|
pkt->stream_index,
|
|
av_ts2str(pkt->pts),
|
|
av_ts2str(pkt->dts),
|
|
pkt->size, pkt->duration, pkt->flags);
|
|
|
|
if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
|
|
st->parser = av_parser_init(st->codecpar->codec_id);
|
|
if (!st->parser) {
|
|
av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
|
|
"%s, packets or times may be invalid.\n",
|
|
avcodec_get_name(st->codecpar->codec_id));
|
|
/* no parser available: just output the raw packets */
|
|
st->need_parsing = AVSTREAM_PARSE_NONE;
|
|
} else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
|
|
st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
|
|
else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
|
|
st->parser->flags |= PARSER_FLAG_ONCE;
|
|
else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
|
|
st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
|
|
}
|
|
|
|
if (!st->need_parsing || !st->parser) {
|
|
/* no parsing needed: we just output the packet as is */
|
|
compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
|
|
if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
|
|
(pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
|
|
ff_reduce_index(s, st->index);
|
|
av_add_index_entry(st, pkt->pos, pkt->dts,
|
|
0, 0, AVINDEX_KEYFRAME);
|
|
}
|
|
got_packet = 1;
|
|
} else if (st->discard < AVDISCARD_ALL) {
|
|
if ((ret = parse_packet(s, pkt, pkt->stream_index, 0)) < 0)
|
|
return ret;
|
|
st->codecpar->sample_rate = st->internal->avctx->sample_rate;
|
|
st->codecpar->bit_rate = st->internal->avctx->bit_rate;
|
|
st->codecpar->channels = st->internal->avctx->channels;
|
|
st->codecpar->channel_layout = st->internal->avctx->channel_layout;
|
|
st->codecpar->codec_id = st->internal->avctx->codec_id;
|
|
} else {
|
|
/* free packet */
|
|
av_packet_unref(pkt);
|
|
}
|
|
if (pkt->flags & AV_PKT_FLAG_KEY)
|
|
st->skip_to_keyframe = 0;
|
|
if (st->skip_to_keyframe) {
|
|
av_packet_unref(pkt);
|
|
got_packet = 0;
|
|
}
|
|
}
|
|
|
|
if (!got_packet && s->internal->parse_queue)
|
|
ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
|
|
|
|
if (ret >= 0) {
|
|
AVStream *st = s->streams[pkt->stream_index];
|
|
int discard_padding = 0;
|
|
if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
|
|
int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
|
|
int64_t sample = ts_to_samples(st, pts);
|
|
int duration = ts_to_samples(st, pkt->duration);
|
|
int64_t end_sample = sample + duration;
|
|
if (duration > 0 && end_sample >= st->first_discard_sample &&
|
|
sample < st->last_discard_sample)
|
|
discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
|
|
}
|
|
if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
|
|
st->skip_samples = st->start_skip_samples;
|
|
if (st->skip_samples || discard_padding) {
|
|
uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
|
|
if (p) {
|
|
AV_WL32(p, st->skip_samples);
|
|
AV_WL32(p + 4, discard_padding);
|
|
av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
|
|
}
|
|
st->skip_samples = 0;
|
|
}
|
|
|
|
if (st->inject_global_side_data) {
|
|
for (i = 0; i < st->nb_side_data; i++) {
|
|
AVPacketSideData *src_sd = &st->side_data[i];
|
|
uint8_t *dst_data;
|
|
|
|
if (av_packet_get_side_data(pkt, src_sd->type, NULL))
|
|
continue;
|
|
|
|
dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
|
|
if (!dst_data) {
|
|
av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
|
|
continue;
|
|
}
|
|
|
|
memcpy(dst_data, src_sd->data, src_sd->size);
|
|
}
|
|
st->inject_global_side_data = 0;
|
|
}
|
|
}
|
|
|
|
av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
|
|
if (metadata) {
|
|
s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
|
|
av_dict_copy(&s->metadata, metadata, 0);
|
|
av_dict_free(&metadata);
|
|
av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
|
|
}
|
|
|
|
#if FF_API_LAVF_AVCTX
|
|
update_stream_avctx(s);
|
|
#endif
|
|
|
|
if (s->debug & FF_FDEBUG_TS)
|
|
av_log(s, AV_LOG_DEBUG,
|
|
"read_frame_internal stream=%d, pts=%s, dts=%s, "
|
|
"size=%d, duration=%"PRId64", flags=%d\n",
|
|
pkt->stream_index,
|
|
av_ts2str(pkt->pts),
|
|
av_ts2str(pkt->dts),
|
|
pkt->size, pkt->duration, pkt->flags);
|
|
|
|
/* A demuxer might have returned EOF because of an IO error, let's
|
|
* propagate this back to the user. */
|
|
if (ret == AVERROR_EOF && s->pb && s->pb->error < 0 && s->pb->error != AVERROR(EAGAIN))
|
|
ret = s->pb->error;
|
|
|
|
return ret;
|
|
}
|
|
|
|
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
const int genpts = s->flags & AVFMT_FLAG_GENPTS;
|
|
int eof = 0;
|
|
int ret;
|
|
AVStream *st;
|
|
|
|
if (!genpts) {
|
|
ret = s->internal->packet_buffer
|
|
? ff_packet_list_get(&s->internal->packet_buffer,
|
|
&s->internal->packet_buffer_end, pkt)
|
|
: read_frame_internal(s, pkt);
|
|
if (ret < 0)
|
|
return ret;
|
|
goto return_packet;
|
|
}
|
|
|
|
for (;;) {
|
|
AVPacketList *pktl = s->internal->packet_buffer;
|
|
|
|
if (pktl) {
|
|
AVPacket *next_pkt = &pktl->pkt;
|
|
|
|
if (next_pkt->dts != AV_NOPTS_VALUE) {
|
|
int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
|
|
// last dts seen for this stream. if any of packets following
|
|
// current one had no dts, we will set this to AV_NOPTS_VALUE.
|
|
int64_t last_dts = next_pkt->dts;
|
|
av_assert2(wrap_bits <= 64);
|
|
while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
|
|
if (pktl->pkt.stream_index == next_pkt->stream_index &&
|
|
av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
|
|
if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
|
|
// not B-frame
|
|
next_pkt->pts = pktl->pkt.dts;
|
|
}
|
|
if (last_dts != AV_NOPTS_VALUE) {
|
|
// Once last dts was set to AV_NOPTS_VALUE, we don't change it.
|
|
last_dts = pktl->pkt.dts;
|
|
}
|
|
}
|
|
pktl = pktl->next;
|
|
}
|
|
if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
|
|
// Fixing the last reference frame had none pts issue (For MXF etc).
|
|
// We only do this when
|
|
// 1. eof.
|
|
// 2. we are not able to resolve a pts value for current packet.
|
|
// 3. the packets for this stream at the end of the files had valid dts.
|
|
next_pkt->pts = last_dts + next_pkt->duration;
|
|
}
|
|
pktl = s->internal->packet_buffer;
|
|
}
|
|
|
|
/* read packet from packet buffer, if there is data */
|
|
st = s->streams[next_pkt->stream_index];
|
|
if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
|
|
next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
|
|
ret = ff_packet_list_get(&s->internal->packet_buffer,
|
|
&s->internal->packet_buffer_end, pkt);
|
|
goto return_packet;
|
|
}
|
|
}
|
|
|
|
ret = read_frame_internal(s, pkt);
|
|
if (ret < 0) {
|
|
if (pktl && ret != AVERROR(EAGAIN)) {
|
|
eof = 1;
|
|
continue;
|
|
} else
|
|
return ret;
|
|
}
|
|
|
|
ret = ff_packet_list_put(&s->internal->packet_buffer,
|
|
&s->internal->packet_buffer_end,
|
|
pkt, 0);
|
|
if (ret < 0) {
|
|
av_packet_unref(pkt);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return_packet:
|
|
|
|
st = s->streams[pkt->stream_index];
|
|
if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
|
|
ff_reduce_index(s, st->index);
|
|
av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
|
|
}
|
|
|
|
if (is_relative(pkt->dts))
|
|
pkt->dts -= RELATIVE_TS_BASE;
|
|
if (is_relative(pkt->pts))
|
|
pkt->pts -= RELATIVE_TS_BASE;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* XXX: suppress the packet queue */
|
|
static void flush_packet_queue(AVFormatContext *s)
|
|
{
|
|
if (!s->internal)
|
|
return;
|
|
ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
|
|
ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
|
|
ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
|
|
|
|
s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
|
|
}
|
|
|
|
/*******************************************************/
|
|
/* seek support */
|
|
|
|
int av_find_default_stream_index(AVFormatContext *s)
|
|
{
|
|
int i;
|
|
AVStream *st;
|
|
int best_stream = 0;
|
|
int best_score = INT_MIN;
|
|
|
|
if (s->nb_streams <= 0)
|
|
return -1;
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
int score = 0;
|
|
st = s->streams[i];
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
|
|
score -= 400;
|
|
if (st->codecpar->width && st->codecpar->height)
|
|
score += 50;
|
|
score+= 25;
|
|
}
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
if (st->codecpar->sample_rate)
|
|
score += 50;
|
|
}
|
|
if (st->codec_info_nb_frames)
|
|
score += 12;
|
|
|
|
if (st->discard != AVDISCARD_ALL)
|
|
score += 200;
|
|
|
|
if (score > best_score) {
|
|
best_score = score;
|
|
best_stream = i;
|
|
}
|
|
}
|
|
return best_stream;
|
|
}
|
|
|
|
/** Flush the frame reader. */
|
|
void ff_read_frame_flush(AVFormatContext *s)
|
|
{
|
|
AVStream *st;
|
|
int i, j;
|
|
|
|
flush_packet_queue(s);
|
|
|
|
/* Reset read state for each stream. */
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
st = s->streams[i];
|
|
|
|
if (st->parser) {
|
|
av_parser_close(st->parser);
|
|
st->parser = NULL;
|
|
}
|
|
st->last_IP_pts = AV_NOPTS_VALUE;
|
|
st->last_dts_for_order_check = AV_NOPTS_VALUE;
|
|
if (st->first_dts == AV_NOPTS_VALUE)
|
|
st->cur_dts = RELATIVE_TS_BASE;
|
|
else
|
|
/* We set the current DTS to an unspecified origin. */
|
|
st->cur_dts = AV_NOPTS_VALUE;
|
|
|
|
st->probe_packets = s->max_probe_packets;
|
|
|
|
for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
|
|
st->pts_buffer[j] = AV_NOPTS_VALUE;
|
|
|
|
if (s->internal->inject_global_side_data)
|
|
st->inject_global_side_data = 1;
|
|
|
|
st->skip_samples = 0;
|
|
}
|
|
}
|
|
|
|
void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
|
|
st->cur_dts =
|
|
av_rescale(timestamp,
|
|
st->time_base.den * (int64_t) ref_st->time_base.num,
|
|
st->time_base.num * (int64_t) ref_st->time_base.den);
|
|
}
|
|
}
|
|
|
|
void ff_reduce_index(AVFormatContext *s, int stream_index)
|
|
{
|
|
AVStream *st = s->streams[stream_index];
|
|
unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
|
|
|
|
if ((unsigned) st->nb_index_entries >= max_entries) {
|
|
int i;
|
|
for (i = 0; 2 * i < st->nb_index_entries; i++)
|
|
st->index_entries[i] = st->index_entries[2 * i];
|
|
st->nb_index_entries = i;
|
|
}
|
|
}
|
|
|
|
int ff_add_index_entry(AVIndexEntry **index_entries,
|
|
int *nb_index_entries,
|
|
unsigned int *index_entries_allocated_size,
|
|
int64_t pos, int64_t timestamp,
|
|
int size, int distance, int flags)
|
|
{
|
|
AVIndexEntry *entries, *ie;
|
|
int index;
|
|
|
|
if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
|
|
return -1;
|
|
|
|
if (timestamp == AV_NOPTS_VALUE)
|
|
return AVERROR(EINVAL);
|
|
|
|
if (size < 0 || size > 0x3FFFFFFF)
|
|
return AVERROR(EINVAL);
|
|
|
|
if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
|
|
timestamp -= RELATIVE_TS_BASE;
|
|
|
|
entries = av_fast_realloc(*index_entries,
|
|
index_entries_allocated_size,
|
|
(*nb_index_entries + 1) *
|
|
sizeof(AVIndexEntry));
|
|
if (!entries)
|
|
return -1;
|
|
|
|
*index_entries = entries;
|
|
|
|
index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
|
|
timestamp, AVSEEK_FLAG_ANY);
|
|
|
|
if (index < 0) {
|
|
index = (*nb_index_entries)++;
|
|
ie = &entries[index];
|
|
av_assert0(index == 0 || ie[-1].timestamp < timestamp);
|
|
} else {
|
|
ie = &entries[index];
|
|
if (ie->timestamp != timestamp) {
|
|
if (ie->timestamp <= timestamp)
|
|
return -1;
|
|
memmove(entries + index + 1, entries + index,
|
|
sizeof(AVIndexEntry) * (*nb_index_entries - index));
|
|
(*nb_index_entries)++;
|
|
} else if (ie->pos == pos && distance < ie->min_distance)
|
|
// do not reduce the distance
|
|
distance = ie->min_distance;
|
|
}
|
|
|
|
ie->pos = pos;
|
|
ie->timestamp = timestamp;
|
|
ie->min_distance = distance;
|
|
ie->size = size;
|
|
ie->flags = flags;
|
|
|
|
return index;
|
|
}
|
|
|
|
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
|
|
int size, int distance, int flags)
|
|
{
|
|
timestamp = wrap_timestamp(st, timestamp);
|
|
return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
|
|
&st->index_entries_allocated_size, pos,
|
|
timestamp, size, distance, flags);
|
|
}
|
|
|
|
int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
|
|
int64_t wanted_timestamp, int flags)
|
|
{
|
|
int a, b, m;
|
|
int64_t timestamp;
|
|
|
|
a = -1;
|
|
b = nb_entries;
|
|
|
|
// Optimize appending index entries at the end.
|
|
if (b && entries[b - 1].timestamp < wanted_timestamp)
|
|
a = b - 1;
|
|
|
|
while (b - a > 1) {
|
|
m = (a + b) >> 1;
|
|
|
|
// Search for the next non-discarded packet.
|
|
while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
|
|
m++;
|
|
if (m == b && entries[m].timestamp >= wanted_timestamp) {
|
|
m = b - 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
timestamp = entries[m].timestamp;
|
|
if (timestamp >= wanted_timestamp)
|
|
b = m;
|
|
if (timestamp <= wanted_timestamp)
|
|
a = m;
|
|
}
|
|
m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
|
|
|
|
if (!(flags & AVSEEK_FLAG_ANY))
|
|
while (m >= 0 && m < nb_entries &&
|
|
!(entries[m].flags & AVINDEX_KEYFRAME))
|
|
m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
|
|
|
|
if (m == nb_entries)
|
|
return -1;
|
|
return m;
|
|
}
|
|
|
|
void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
|
|
{
|
|
int ist1, ist2;
|
|
int64_t pos_delta = 0;
|
|
int64_t skip = 0;
|
|
//We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
|
|
const char *proto = avio_find_protocol_name(s->url);
|
|
|
|
av_assert0(time_tolerance >= 0);
|
|
|
|
if (!proto) {
|
|
av_log(s, AV_LOG_INFO,
|
|
"Protocol name not provided, cannot determine if input is local or "
|
|
"a network protocol, buffers and access patterns cannot be configured "
|
|
"optimally without knowing the protocol\n");
|
|
}
|
|
|
|
if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
|
|
return;
|
|
|
|
for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
|
|
AVStream *st1 = s->streams[ist1];
|
|
for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
|
|
AVStream *st2 = s->streams[ist2];
|
|
int i1, i2;
|
|
|
|
if (ist1 == ist2)
|
|
continue;
|
|
|
|
for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
|
|
AVIndexEntry *e1 = &st1->index_entries[i1];
|
|
int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
|
|
|
|
skip = FFMAX(skip, e1->size);
|
|
for (; i2 < st2->nb_index_entries; i2++) {
|
|
AVIndexEntry *e2 = &st2->index_entries[i2];
|
|
int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
|
|
if (e2_pts < e1_pts || e2_pts - (uint64_t)e1_pts < time_tolerance)
|
|
continue;
|
|
pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pos_delta *= 2;
|
|
/* XXX This could be adjusted depending on protocol*/
|
|
if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
|
|
av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
|
|
|
|
/* realloc the buffer and the original data will be retained */
|
|
if (ffio_realloc_buf(s->pb, pos_delta)) {
|
|
av_log(s, AV_LOG_ERROR, "Realloc buffer fail.\n");
|
|
return;
|
|
}
|
|
|
|
s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
|
|
}
|
|
|
|
if (skip < (1<<23)) {
|
|
s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
|
|
}
|
|
}
|
|
|
|
int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
|
|
{
|
|
return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
|
|
wanted_timestamp, flags);
|
|
}
|
|
|
|
static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
|
|
int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
|
|
{
|
|
int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
|
|
if (stream_index >= 0)
|
|
ts = wrap_timestamp(s->streams[stream_index], ts);
|
|
return ts;
|
|
}
|
|
|
|
int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
|
|
int64_t target_ts, int flags)
|
|
{
|
|
const AVInputFormat *avif = s->iformat;
|
|
int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
|
|
int64_t ts_min, ts_max, ts;
|
|
int index;
|
|
int64_t ret;
|
|
AVStream *st;
|
|
|
|
if (stream_index < 0)
|
|
return -1;
|
|
|
|
av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
|
|
|
|
ts_max =
|
|
ts_min = AV_NOPTS_VALUE;
|
|
pos_limit = -1; // GCC falsely says it may be uninitialized.
|
|
|
|
st = s->streams[stream_index];
|
|
if (st->index_entries) {
|
|
AVIndexEntry *e;
|
|
|
|
/* FIXME: Whole function must be checked for non-keyframe entries in
|
|
* index case, especially read_timestamp(). */
|
|
index = av_index_search_timestamp(st, target_ts,
|
|
flags | AVSEEK_FLAG_BACKWARD);
|
|
index = FFMAX(index, 0);
|
|
e = &st->index_entries[index];
|
|
|
|
if (e->timestamp <= target_ts || e->pos == e->min_distance) {
|
|
pos_min = e->pos;
|
|
ts_min = e->timestamp;
|
|
av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
|
|
pos_min, av_ts2str(ts_min));
|
|
} else {
|
|
av_assert1(index == 0);
|
|
}
|
|
|
|
index = av_index_search_timestamp(st, target_ts,
|
|
flags & ~AVSEEK_FLAG_BACKWARD);
|
|
av_assert0(index < st->nb_index_entries);
|
|
if (index >= 0) {
|
|
e = &st->index_entries[index];
|
|
av_assert1(e->timestamp >= target_ts);
|
|
pos_max = e->pos;
|
|
ts_max = e->timestamp;
|
|
pos_limit = pos_max - e->min_distance;
|
|
av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
|
|
" dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
|
|
}
|
|
}
|
|
|
|
pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
|
|
ts_min, ts_max, flags, &ts, avif->read_timestamp);
|
|
if (pos < 0)
|
|
return -1;
|
|
|
|
/* do the seek */
|
|
if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
|
|
return ret;
|
|
|
|
ff_read_frame_flush(s);
|
|
ff_update_cur_dts(s, st, ts);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
|
|
int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
|
|
{
|
|
int64_t step = 1024;
|
|
int64_t limit, ts_max;
|
|
int64_t filesize = avio_size(s->pb);
|
|
int64_t pos_max = filesize - 1;
|
|
do {
|
|
limit = pos_max;
|
|
pos_max = FFMAX(0, (pos_max) - step);
|
|
ts_max = ff_read_timestamp(s, stream_index,
|
|
&pos_max, limit, read_timestamp);
|
|
step += step;
|
|
} while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
|
|
if (ts_max == AV_NOPTS_VALUE)
|
|
return -1;
|
|
|
|
for (;;) {
|
|
int64_t tmp_pos = pos_max + 1;
|
|
int64_t tmp_ts = ff_read_timestamp(s, stream_index,
|
|
&tmp_pos, INT64_MAX, read_timestamp);
|
|
if (tmp_ts == AV_NOPTS_VALUE)
|
|
break;
|
|
av_assert0(tmp_pos > pos_max);
|
|
ts_max = tmp_ts;
|
|
pos_max = tmp_pos;
|
|
if (tmp_pos >= filesize)
|
|
break;
|
|
}
|
|
|
|
if (ts)
|
|
*ts = ts_max;
|
|
if (pos)
|
|
*pos = pos_max;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
|
|
int64_t pos_min, int64_t pos_max, int64_t pos_limit,
|
|
int64_t ts_min, int64_t ts_max,
|
|
int flags, int64_t *ts_ret,
|
|
int64_t (*read_timestamp)(struct AVFormatContext *, int,
|
|
int64_t *, int64_t))
|
|
{
|
|
int64_t pos, ts;
|
|
int64_t start_pos;
|
|
int no_change;
|
|
int ret;
|
|
|
|
av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
|
|
|
|
if (ts_min == AV_NOPTS_VALUE) {
|
|
pos_min = s->internal->data_offset;
|
|
ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
|
|
if (ts_min == AV_NOPTS_VALUE)
|
|
return -1;
|
|
}
|
|
|
|
if (ts_min >= target_ts) {
|
|
*ts_ret = ts_min;
|
|
return pos_min;
|
|
}
|
|
|
|
if (ts_max == AV_NOPTS_VALUE) {
|
|
if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
|
|
return ret;
|
|
pos_limit = pos_max;
|
|
}
|
|
|
|
if (ts_max <= target_ts) {
|
|
*ts_ret = ts_max;
|
|
return pos_max;
|
|
}
|
|
|
|
av_assert0(ts_min < ts_max);
|
|
|
|
no_change = 0;
|
|
while (pos_min < pos_limit) {
|
|
av_log(s, AV_LOG_TRACE,
|
|
"pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
|
|
pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
|
|
av_assert0(pos_limit <= pos_max);
|
|
|
|
if (no_change == 0) {
|
|
int64_t approximate_keyframe_distance = pos_max - pos_limit;
|
|
// interpolate position (better than dichotomy)
|
|
pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
|
|
ts_max - ts_min) +
|
|
pos_min - approximate_keyframe_distance;
|
|
} else if (no_change == 1) {
|
|
// bisection if interpolation did not change min / max pos last time
|
|
pos = (pos_min + pos_limit) >> 1;
|
|
} else {
|
|
/* linear search if bisection failed, can only happen if there
|
|
* are very few or no keyframes between min/max */
|
|
pos = pos_min;
|
|
}
|
|
if (pos <= pos_min)
|
|
pos = pos_min + 1;
|
|
else if (pos > pos_limit)
|
|
pos = pos_limit;
|
|
start_pos = pos;
|
|
|
|
// May pass pos_limit instead of -1.
|
|
ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
|
|
if (pos == pos_max)
|
|
no_change++;
|
|
else
|
|
no_change = 0;
|
|
av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
|
|
" target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
|
|
pos_min, pos, pos_max,
|
|
av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
|
|
pos_limit, start_pos, no_change);
|
|
if (ts == AV_NOPTS_VALUE) {
|
|
av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
|
|
return -1;
|
|
}
|
|
if (target_ts <= ts) {
|
|
pos_limit = start_pos - 1;
|
|
pos_max = pos;
|
|
ts_max = ts;
|
|
}
|
|
if (target_ts >= ts) {
|
|
pos_min = pos;
|
|
ts_min = ts;
|
|
}
|
|
}
|
|
|
|
pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
|
|
ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
|
|
#if 0
|
|
pos_min = pos;
|
|
ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
|
|
pos_min++;
|
|
ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
|
|
av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
|
|
pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
|
|
#endif
|
|
*ts_ret = ts;
|
|
return pos;
|
|
}
|
|
|
|
static int seek_frame_byte(AVFormatContext *s, int stream_index,
|
|
int64_t pos, int flags)
|
|
{
|
|
int64_t pos_min, pos_max;
|
|
|
|
pos_min = s->internal->data_offset;
|
|
pos_max = avio_size(s->pb) - 1;
|
|
|
|
if (pos < pos_min)
|
|
pos = pos_min;
|
|
else if (pos > pos_max)
|
|
pos = pos_max;
|
|
|
|
avio_seek(s->pb, pos, SEEK_SET);
|
|
|
|
s->io_repositioned = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int seek_frame_generic(AVFormatContext *s, int stream_index,
|
|
int64_t timestamp, int flags)
|
|
{
|
|
int index;
|
|
int64_t ret;
|
|
AVStream *st;
|
|
AVIndexEntry *ie;
|
|
|
|
st = s->streams[stream_index];
|
|
|
|
index = av_index_search_timestamp(st, timestamp, flags);
|
|
|
|
if (index < 0 && st->nb_index_entries &&
|
|
timestamp < st->index_entries[0].timestamp)
|
|
return -1;
|
|
|
|
if (index < 0 || index == st->nb_index_entries - 1) {
|
|
AVPacket pkt;
|
|
int nonkey = 0;
|
|
|
|
if (st->nb_index_entries) {
|
|
av_assert0(st->index_entries);
|
|
ie = &st->index_entries[st->nb_index_entries - 1];
|
|
if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
|
|
return ret;
|
|
ff_update_cur_dts(s, st, ie->timestamp);
|
|
} else {
|
|
if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
|
|
return ret;
|
|
}
|
|
for (;;) {
|
|
int read_status;
|
|
do {
|
|
read_status = av_read_frame(s, &pkt);
|
|
} while (read_status == AVERROR(EAGAIN));
|
|
if (read_status < 0)
|
|
break;
|
|
if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
|
|
if (pkt.flags & AV_PKT_FLAG_KEY) {
|
|
av_packet_unref(&pkt);
|
|
break;
|
|
}
|
|
if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
|
|
av_log(s, AV_LOG_ERROR,"seek_frame_generic failed as this stream seems to contain no keyframes after the target timestamp, %d non keyframes found\n", nonkey);
|
|
av_packet_unref(&pkt);
|
|
break;
|
|
}
|
|
}
|
|
av_packet_unref(&pkt);
|
|
}
|
|
index = av_index_search_timestamp(st, timestamp, flags);
|
|
}
|
|
if (index < 0)
|
|
return -1;
|
|
|
|
ff_read_frame_flush(s);
|
|
if (s->iformat->read_seek)
|
|
if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
|
|
return 0;
|
|
ie = &st->index_entries[index];
|
|
if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
|
|
return ret;
|
|
ff_update_cur_dts(s, st, ie->timestamp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int seek_frame_internal(AVFormatContext *s, int stream_index,
|
|
int64_t timestamp, int flags)
|
|
{
|
|
int ret;
|
|
AVStream *st;
|
|
|
|
if (flags & AVSEEK_FLAG_BYTE) {
|
|
if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
|
|
return -1;
|
|
ff_read_frame_flush(s);
|
|
return seek_frame_byte(s, stream_index, timestamp, flags);
|
|
}
|
|
|
|
if (stream_index < 0) {
|
|
stream_index = av_find_default_stream_index(s);
|
|
if (stream_index < 0)
|
|
return -1;
|
|
|
|
st = s->streams[stream_index];
|
|
/* timestamp for default must be expressed in AV_TIME_BASE units */
|
|
timestamp = av_rescale(timestamp, st->time_base.den,
|
|
AV_TIME_BASE * (int64_t) st->time_base.num);
|
|
}
|
|
|
|
/* first, we try the format specific seek */
|
|
if (s->iformat->read_seek) {
|
|
ff_read_frame_flush(s);
|
|
ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
|
|
} else
|
|
ret = -1;
|
|
if (ret >= 0)
|
|
return 0;
|
|
|
|
if (s->iformat->read_timestamp &&
|
|
!(s->iformat->flags & AVFMT_NOBINSEARCH)) {
|
|
ff_read_frame_flush(s);
|
|
return ff_seek_frame_binary(s, stream_index, timestamp, flags);
|
|
} else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
|
|
ff_read_frame_flush(s);
|
|
return seek_frame_generic(s, stream_index, timestamp, flags);
|
|
} else
|
|
return -1;
|
|
}
|
|
|
|
int av_seek_frame(AVFormatContext *s, int stream_index,
|
|
int64_t timestamp, int flags)
|
|
{
|
|
int ret;
|
|
|
|
if (s->iformat->read_seek2 && !s->iformat->read_seek) {
|
|
int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
|
|
if ((flags & AVSEEK_FLAG_BACKWARD))
|
|
max_ts = timestamp;
|
|
else
|
|
min_ts = timestamp;
|
|
return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
|
|
flags & ~AVSEEK_FLAG_BACKWARD);
|
|
}
|
|
|
|
ret = seek_frame_internal(s, stream_index, timestamp, flags);
|
|
|
|
if (ret >= 0)
|
|
ret = avformat_queue_attached_pictures(s);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
|
|
int64_t ts, int64_t max_ts, int flags)
|
|
{
|
|
if (min_ts > ts || max_ts < ts)
|
|
return -1;
|
|
if (stream_index < -1 || stream_index >= (int)s->nb_streams)
|
|
return AVERROR(EINVAL);
|
|
|
|
if (s->seek2any>0)
|
|
flags |= AVSEEK_FLAG_ANY;
|
|
flags &= ~AVSEEK_FLAG_BACKWARD;
|
|
|
|
if (s->iformat->read_seek2) {
|
|
int ret;
|
|
ff_read_frame_flush(s);
|
|
|
|
if (stream_index == -1 && s->nb_streams == 1) {
|
|
AVRational time_base = s->streams[0]->time_base;
|
|
ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
|
|
min_ts = av_rescale_rnd(min_ts, time_base.den,
|
|
time_base.num * (int64_t)AV_TIME_BASE,
|
|
AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
|
|
max_ts = av_rescale_rnd(max_ts, time_base.den,
|
|
time_base.num * (int64_t)AV_TIME_BASE,
|
|
AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
|
|
stream_index = 0;
|
|
}
|
|
|
|
ret = s->iformat->read_seek2(s, stream_index, min_ts,
|
|
ts, max_ts, flags);
|
|
|
|
if (ret >= 0)
|
|
ret = avformat_queue_attached_pictures(s);
|
|
return ret;
|
|
}
|
|
|
|
if (s->iformat->read_timestamp) {
|
|
// try to seek via read_timestamp()
|
|
}
|
|
|
|
// Fall back on old API if new is not implemented but old is.
|
|
// Note the old API has somewhat different semantics.
|
|
if (s->iformat->read_seek || 1) {
|
|
int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
|
|
int ret = av_seek_frame(s, stream_index, ts, flags | dir);
|
|
if (ret<0 && ts != min_ts && max_ts != ts) {
|
|
ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
|
|
if (ret >= 0)
|
|
ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
// try some generic seek like seek_frame_generic() but with new ts semantics
|
|
return -1; //unreachable
|
|
}
|
|
|
|
int avformat_flush(AVFormatContext *s)
|
|
{
|
|
ff_read_frame_flush(s);
|
|
return 0;
|
|
}
|
|
|
|
/*******************************************************/
|
|
|
|
/**
|
|
* Return TRUE if the stream has accurate duration in any stream.
|
|
*
|
|
* @return TRUE if the stream has accurate duration for at least one component.
|
|
*/
|
|
static int has_duration(AVFormatContext *ic)
|
|
{
|
|
int i;
|
|
AVStream *st;
|
|
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
if (st->duration != AV_NOPTS_VALUE)
|
|
return 1;
|
|
}
|
|
if (ic->duration != AV_NOPTS_VALUE)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Estimate the stream timings from the one of each components.
|
|
*
|
|
* Also computes the global bitrate if possible.
|
|
*/
|
|
static void update_stream_timings(AVFormatContext *ic)
|
|
{
|
|
int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
|
|
int64_t duration, duration1, duration_text, filesize;
|
|
int i;
|
|
AVProgram *p;
|
|
|
|
start_time = INT64_MAX;
|
|
start_time_text = INT64_MAX;
|
|
end_time = INT64_MIN;
|
|
end_time_text = INT64_MIN;
|
|
duration = INT64_MIN;
|
|
duration_text = INT64_MIN;
|
|
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
AVStream *st = ic->streams[i];
|
|
int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
|
|
st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
|
|
if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
|
|
start_time1 = av_rescale_q(st->start_time, st->time_base,
|
|
AV_TIME_BASE_Q);
|
|
if (is_text)
|
|
start_time_text = FFMIN(start_time_text, start_time1);
|
|
else
|
|
start_time = FFMIN(start_time, start_time1);
|
|
end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
|
|
AV_TIME_BASE_Q,
|
|
AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
|
|
if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
|
|
end_time1 += start_time1;
|
|
if (is_text)
|
|
end_time_text = FFMAX(end_time_text, end_time1);
|
|
else
|
|
end_time = FFMAX(end_time, end_time1);
|
|
}
|
|
for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
|
|
if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
|
|
p->start_time = start_time1;
|
|
if (p->end_time < end_time1)
|
|
p->end_time = end_time1;
|
|
}
|
|
}
|
|
if (st->duration != AV_NOPTS_VALUE) {
|
|
duration1 = av_rescale_q(st->duration, st->time_base,
|
|
AV_TIME_BASE_Q);
|
|
if (is_text)
|
|
duration_text = FFMAX(duration_text, duration1);
|
|
else
|
|
duration = FFMAX(duration, duration1);
|
|
}
|
|
}
|
|
if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
|
|
start_time = start_time_text;
|
|
else if (start_time > start_time_text)
|
|
av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
|
|
|
|
if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
|
|
end_time = end_time_text;
|
|
else if (end_time < end_time_text)
|
|
av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
|
|
|
|
if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
|
|
duration = duration_text;
|
|
else if (duration < duration_text)
|
|
av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream duration %f\n", duration_text / (float)AV_TIME_BASE);
|
|
|
|
if (start_time != INT64_MAX) {
|
|
ic->start_time = start_time;
|
|
if (end_time != INT64_MIN) {
|
|
if (ic->nb_programs > 1) {
|
|
for (i = 0; i < ic->nb_programs; i++) {
|
|
p = ic->programs[i];
|
|
if (p->start_time != AV_NOPTS_VALUE &&
|
|
p->end_time > p->start_time &&
|
|
p->end_time - (uint64_t)p->start_time <= INT64_MAX)
|
|
duration = FFMAX(duration, p->end_time - p->start_time);
|
|
}
|
|
} else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
|
|
duration = FFMAX(duration, end_time - start_time);
|
|
}
|
|
}
|
|
}
|
|
if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
|
|
ic->duration = duration;
|
|
}
|
|
if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
|
|
/* compute the bitrate */
|
|
double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
|
|
(double) ic->duration;
|
|
if (bitrate >= 0 && bitrate <= INT64_MAX)
|
|
ic->bit_rate = bitrate;
|
|
}
|
|
}
|
|
|
|
static void fill_all_stream_timings(AVFormatContext *ic)
|
|
{
|
|
int i;
|
|
AVStream *st;
|
|
|
|
update_stream_timings(ic);
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
if (st->start_time == AV_NOPTS_VALUE) {
|
|
if (ic->start_time != AV_NOPTS_VALUE)
|
|
st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
|
|
st->time_base);
|
|
if (ic->duration != AV_NOPTS_VALUE)
|
|
st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
|
|
st->time_base);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void estimate_timings_from_bit_rate(AVFormatContext *ic)
|
|
{
|
|
int64_t filesize, duration;
|
|
int i, show_warning = 0;
|
|
AVStream *st;
|
|
|
|
/* if bit_rate is already set, we believe it */
|
|
if (ic->bit_rate <= 0) {
|
|
int64_t bit_rate = 0;
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
|
|
st->codecpar->bit_rate = st->internal->avctx->bit_rate;
|
|
if (st->codecpar->bit_rate > 0) {
|
|
if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
|
|
bit_rate = 0;
|
|
break;
|
|
}
|
|
bit_rate += st->codecpar->bit_rate;
|
|
} else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
|
|
// If we have a videostream with packets but without a bitrate
|
|
// then consider the sum not known
|
|
bit_rate = 0;
|
|
break;
|
|
}
|
|
}
|
|
ic->bit_rate = bit_rate;
|
|
}
|
|
|
|
/* if duration is already set, we believe it */
|
|
if (ic->duration == AV_NOPTS_VALUE &&
|
|
ic->bit_rate != 0) {
|
|
filesize = ic->pb ? avio_size(ic->pb) : 0;
|
|
if (filesize > ic->internal->data_offset) {
|
|
filesize -= ic->internal->data_offset;
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
if ( st->time_base.num <= INT64_MAX / ic->bit_rate
|
|
&& st->duration == AV_NOPTS_VALUE) {
|
|
duration = av_rescale(filesize, 8LL * st->time_base.den,
|
|
ic->bit_rate *
|
|
(int64_t) st->time_base.num);
|
|
st->duration = duration;
|
|
show_warning = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (show_warning)
|
|
av_log(ic, AV_LOG_WARNING,
|
|
"Estimating duration from bitrate, this may be inaccurate\n");
|
|
}
|
|
|
|
#define DURATION_MAX_READ_SIZE 250000LL
|
|
#define DURATION_MAX_RETRY 6
|
|
|
|
/* only usable for MPEG-PS streams */
|
|
static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
|
|
{
|
|
AVPacket pkt1, *pkt = &pkt1;
|
|
AVStream *st;
|
|
int num, den, read_size, i, ret;
|
|
int found_duration = 0;
|
|
int is_end;
|
|
int64_t filesize, offset, duration;
|
|
int retry = 0;
|
|
|
|
/* flush packet queue */
|
|
flush_packet_queue(ic);
|
|
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
if (st->start_time == AV_NOPTS_VALUE &&
|
|
st->first_dts == AV_NOPTS_VALUE &&
|
|
st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
|
|
av_log(ic, AV_LOG_WARNING,
|
|
"start time for stream %d is not set in estimate_timings_from_pts\n", i);
|
|
|
|
if (st->parser) {
|
|
av_parser_close(st->parser);
|
|
st->parser = NULL;
|
|
}
|
|
}
|
|
|
|
if (ic->skip_estimate_duration_from_pts) {
|
|
av_log(ic, AV_LOG_INFO, "Skipping duration calculation in estimate_timings_from_pts\n");
|
|
goto skip_duration_calc;
|
|
}
|
|
|
|
av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
|
|
/* estimate the end time (duration) */
|
|
/* XXX: may need to support wrapping */
|
|
filesize = ic->pb ? avio_size(ic->pb) : 0;
|
|
do {
|
|
is_end = found_duration;
|
|
offset = filesize - (DURATION_MAX_READ_SIZE << retry);
|
|
if (offset < 0)
|
|
offset = 0;
|
|
|
|
avio_seek(ic->pb, offset, SEEK_SET);
|
|
read_size = 0;
|
|
for (;;) {
|
|
if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
|
|
break;
|
|
|
|
do {
|
|
ret = ff_read_packet(ic, pkt);
|
|
} while (ret == AVERROR(EAGAIN));
|
|
if (ret != 0)
|
|
break;
|
|
read_size += pkt->size;
|
|
st = ic->streams[pkt->stream_index];
|
|
if (pkt->pts != AV_NOPTS_VALUE &&
|
|
(st->start_time != AV_NOPTS_VALUE ||
|
|
st->first_dts != AV_NOPTS_VALUE)) {
|
|
if (pkt->duration == 0) {
|
|
ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
|
|
if (den && num) {
|
|
pkt->duration = av_rescale_rnd(1,
|
|
num * (int64_t) st->time_base.den,
|
|
den * (int64_t) st->time_base.num,
|
|
AV_ROUND_DOWN);
|
|
}
|
|
}
|
|
duration = pkt->pts + pkt->duration;
|
|
found_duration = 1;
|
|
if (st->start_time != AV_NOPTS_VALUE)
|
|
duration -= st->start_time;
|
|
else
|
|
duration -= st->first_dts;
|
|
if (duration > 0) {
|
|
if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
|
|
(st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
|
|
st->duration = duration;
|
|
st->info->last_duration = duration;
|
|
}
|
|
}
|
|
av_packet_unref(pkt);
|
|
}
|
|
|
|
/* check if all audio/video streams have valid duration */
|
|
if (!is_end) {
|
|
is_end = 1;
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
switch (st->codecpar->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
if (st->duration == AV_NOPTS_VALUE)
|
|
is_end = 0;
|
|
}
|
|
}
|
|
}
|
|
} while (!is_end &&
|
|
offset &&
|
|
++retry <= DURATION_MAX_RETRY);
|
|
|
|
av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
|
|
|
|
/* warn about audio/video streams which duration could not be estimated */
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
if (st->duration == AV_NOPTS_VALUE) {
|
|
switch (st->codecpar->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
|
|
av_log(ic, AV_LOG_WARNING, "stream %d : no PTS found at end of file, duration not set\n", i);
|
|
} else
|
|
av_log(ic, AV_LOG_WARNING, "stream %d : no TS found at start of file, duration not set\n", i);
|
|
}
|
|
}
|
|
}
|
|
skip_duration_calc:
|
|
fill_all_stream_timings(ic);
|
|
|
|
avio_seek(ic->pb, old_offset, SEEK_SET);
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
int j;
|
|
|
|
st = ic->streams[i];
|
|
st->cur_dts = st->first_dts;
|
|
st->last_IP_pts = AV_NOPTS_VALUE;
|
|
st->last_dts_for_order_check = AV_NOPTS_VALUE;
|
|
for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
|
|
st->pts_buffer[j] = AV_NOPTS_VALUE;
|
|
}
|
|
}
|
|
|
|
/* 1:1 map to AVDurationEstimationMethod */
|
|
static const char *duration_name[] = {
|
|
[AVFMT_DURATION_FROM_PTS] = "pts",
|
|
[AVFMT_DURATION_FROM_STREAM] = "stream",
|
|
[AVFMT_DURATION_FROM_BITRATE] = "bit rate",
|
|
};
|
|
|
|
static const char *duration_estimate_name(enum AVDurationEstimationMethod method)
|
|
{
|
|
return duration_name[method];
|
|
}
|
|
|
|
static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
|
|
{
|
|
int64_t file_size;
|
|
|
|
/* get the file size, if possible */
|
|
if (ic->iformat->flags & AVFMT_NOFILE) {
|
|
file_size = 0;
|
|
} else {
|
|
file_size = avio_size(ic->pb);
|
|
file_size = FFMAX(0, file_size);
|
|
}
|
|
|
|
if ((!strcmp(ic->iformat->name, "mpeg") ||
|
|
!strcmp(ic->iformat->name, "mpegts")) &&
|
|
file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
|
|
/* get accurate estimate from the PTSes */
|
|
estimate_timings_from_pts(ic, old_offset);
|
|
ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
|
|
} else if (has_duration(ic)) {
|
|
/* at least one component has timings - we use them for all
|
|
* the components */
|
|
fill_all_stream_timings(ic);
|
|
/* nut demuxer estimate the duration from PTS */
|
|
if(!strcmp(ic->iformat->name, "nut"))
|
|
ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
|
|
else
|
|
ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
|
|
} else {
|
|
/* less precise: use bitrate info */
|
|
estimate_timings_from_bit_rate(ic);
|
|
ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
|
|
}
|
|
update_stream_timings(ic);
|
|
|
|
{
|
|
int i;
|
|
AVStream av_unused *st;
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
if (st->time_base.den)
|
|
av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %s duration: %s\n", i,
|
|
av_ts2timestr(st->start_time, &st->time_base),
|
|
av_ts2timestr(st->duration, &st->time_base));
|
|
}
|
|
av_log(ic, AV_LOG_TRACE,
|
|
"format: start_time: %s duration: %s (estimate from %s) bitrate=%"PRId64" kb/s\n",
|
|
av_ts2timestr(ic->start_time, &AV_TIME_BASE_Q),
|
|
av_ts2timestr(ic->duration, &AV_TIME_BASE_Q),
|
|
duration_estimate_name(ic->duration_estimation_method),
|
|
(int64_t)ic->bit_rate / 1000);
|
|
}
|
|
}
|
|
|
|
static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
|
|
{
|
|
AVCodecContext *avctx = st->internal->avctx;
|
|
|
|
#define FAIL(errmsg) do { \
|
|
if (errmsg_ptr) \
|
|
*errmsg_ptr = errmsg; \
|
|
return 0; \
|
|
} while (0)
|
|
|
|
if ( avctx->codec_id == AV_CODEC_ID_NONE
|
|
&& avctx->codec_type != AVMEDIA_TYPE_DATA)
|
|
FAIL("unknown codec");
|
|
switch (avctx->codec_type) {
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
if (!avctx->frame_size && determinable_frame_size(avctx))
|
|
FAIL("unspecified frame size");
|
|
if (st->info->found_decoder >= 0 &&
|
|
avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
|
|
FAIL("unspecified sample format");
|
|
if (!avctx->sample_rate)
|
|
FAIL("unspecified sample rate");
|
|
if (!avctx->channels)
|
|
FAIL("unspecified number of channels");
|
|
if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
|
|
FAIL("no decodable DTS frames");
|
|
break;
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
if (!avctx->width)
|
|
FAIL("unspecified size");
|
|
if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
|
|
FAIL("unspecified pixel format");
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
|
|
if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
|
|
FAIL("no frame in rv30/40 and no sar");
|
|
break;
|
|
case AVMEDIA_TYPE_SUBTITLE:
|
|
if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
|
|
FAIL("unspecified size");
|
|
break;
|
|
case AVMEDIA_TYPE_DATA:
|
|
if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* returns 1 or 0 if or if not decoded data was returned, or a negative error */
|
|
static int try_decode_frame(AVFormatContext *s, AVStream *st,
|
|
const AVPacket *avpkt, AVDictionary **options)
|
|
{
|
|
AVCodecContext *avctx = st->internal->avctx;
|
|
const AVCodec *codec;
|
|
int got_picture = 1, ret = 0;
|
|
AVFrame *frame = av_frame_alloc();
|
|
AVSubtitle subtitle;
|
|
AVPacket pkt = *avpkt;
|
|
int do_skip_frame = 0;
|
|
enum AVDiscard skip_frame;
|
|
|
|
if (!frame)
|
|
return AVERROR(ENOMEM);
|
|
|
|
if (!avcodec_is_open(avctx) &&
|
|
st->info->found_decoder <= 0 &&
|
|
(st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
|
|
AVDictionary *thread_opt = NULL;
|
|
|
|
codec = find_probe_decoder(s, st, st->codecpar->codec_id);
|
|
|
|
if (!codec) {
|
|
st->info->found_decoder = -st->codecpar->codec_id;
|
|
ret = -1;
|
|
goto fail;
|
|
}
|
|
|
|
/* Force thread count to 1 since the H.264 decoder will not extract
|
|
* SPS and PPS to extradata during multi-threaded decoding. */
|
|
av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
|
|
if (s->codec_whitelist)
|
|
av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
|
|
ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
|
|
if (!options)
|
|
av_dict_free(&thread_opt);
|
|
if (ret < 0) {
|
|
st->info->found_decoder = -avctx->codec_id;
|
|
goto fail;
|
|
}
|
|
st->info->found_decoder = 1;
|
|
} else if (!st->info->found_decoder)
|
|
st->info->found_decoder = 1;
|
|
|
|
if (st->info->found_decoder < 0) {
|
|
ret = -1;
|
|
goto fail;
|
|
}
|
|
|
|
if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
|
|
do_skip_frame = 1;
|
|
skip_frame = avctx->skip_frame;
|
|
avctx->skip_frame = AVDISCARD_ALL;
|
|
}
|
|
|
|
while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
|
|
ret >= 0 &&
|
|
(!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
|
|
(!st->codec_info_nb_frames &&
|
|
(avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
|
|
got_picture = 0;
|
|
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
|
|
avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
ret = avcodec_send_packet(avctx, &pkt);
|
|
if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
|
|
break;
|
|
if (ret >= 0)
|
|
pkt.size = 0;
|
|
ret = avcodec_receive_frame(avctx, frame);
|
|
if (ret >= 0)
|
|
got_picture = 1;
|
|
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
|
|
ret = 0;
|
|
} else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
|
|
ret = avcodec_decode_subtitle2(avctx, &subtitle,
|
|
&got_picture, &pkt);
|
|
if (got_picture)
|
|
avsubtitle_free(&subtitle);
|
|
if (ret >= 0)
|
|
pkt.size = 0;
|
|
}
|
|
if (ret >= 0) {
|
|
if (got_picture)
|
|
st->nb_decoded_frames++;
|
|
ret = got_picture;
|
|
}
|
|
}
|
|
|
|
if (!pkt.data && !got_picture)
|
|
ret = -1;
|
|
|
|
fail:
|
|
if (do_skip_frame) {
|
|
avctx->skip_frame = skip_frame;
|
|
}
|
|
|
|
av_frame_free(&frame);
|
|
return ret;
|
|
}
|
|
|
|
unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
|
|
{
|
|
while (tags->id != AV_CODEC_ID_NONE) {
|
|
if (tags->id == id)
|
|
return tags->tag;
|
|
tags++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
|
|
{
|
|
int i;
|
|
for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
|
|
if (tag == tags[i].tag)
|
|
return tags[i].id;
|
|
for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
|
|
if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
|
|
return tags[i].id;
|
|
return AV_CODEC_ID_NONE;
|
|
}
|
|
|
|
enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
|
|
{
|
|
if (bps <= 0 || bps > 64)
|
|
return AV_CODEC_ID_NONE;
|
|
|
|
if (flt) {
|
|
switch (bps) {
|
|
case 32:
|
|
return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
|
|
case 64:
|
|
return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
|
|
default:
|
|
return AV_CODEC_ID_NONE;
|
|
}
|
|
} else {
|
|
bps += 7;
|
|
bps >>= 3;
|
|
if (sflags & (1 << (bps - 1))) {
|
|
switch (bps) {
|
|
case 1:
|
|
return AV_CODEC_ID_PCM_S8;
|
|
case 2:
|
|
return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
|
|
case 3:
|
|
return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
|
|
case 4:
|
|
return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
|
|
case 8:
|
|
return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
|
|
default:
|
|
return AV_CODEC_ID_NONE;
|
|
}
|
|
} else {
|
|
switch (bps) {
|
|
case 1:
|
|
return AV_CODEC_ID_PCM_U8;
|
|
case 2:
|
|
return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
|
|
case 3:
|
|
return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
|
|
case 4:
|
|
return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
|
|
default:
|
|
return AV_CODEC_ID_NONE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
|
|
{
|
|
unsigned int tag;
|
|
if (!av_codec_get_tag2(tags, id, &tag))
|
|
return 0;
|
|
return tag;
|
|
}
|
|
|
|
int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
|
|
unsigned int *tag)
|
|
{
|
|
int i;
|
|
for (i = 0; tags && tags[i]; i++) {
|
|
const AVCodecTag *codec_tags = tags[i];
|
|
while (codec_tags->id != AV_CODEC_ID_NONE) {
|
|
if (codec_tags->id == id) {
|
|
*tag = codec_tags->tag;
|
|
return 1;
|
|
}
|
|
codec_tags++;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
|
|
{
|
|
int i;
|
|
for (i = 0; tags && tags[i]; i++) {
|
|
enum AVCodecID id = ff_codec_get_id(tags[i], tag);
|
|
if (id != AV_CODEC_ID_NONE)
|
|
return id;
|
|
}
|
|
return AV_CODEC_ID_NONE;
|
|
}
|
|
|
|
static void compute_chapters_end(AVFormatContext *s)
|
|
{
|
|
unsigned int i, j;
|
|
int64_t max_time = 0;
|
|
|
|
if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
|
|
max_time = s->duration +
|
|
((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
|
|
|
|
for (i = 0; i < s->nb_chapters; i++)
|
|
if (s->chapters[i]->end == AV_NOPTS_VALUE) {
|
|
AVChapter *ch = s->chapters[i];
|
|
int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
|
|
ch->time_base)
|
|
: INT64_MAX;
|
|
|
|
for (j = 0; j < s->nb_chapters; j++) {
|
|
AVChapter *ch1 = s->chapters[j];
|
|
int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
|
|
ch->time_base);
|
|
if (j != i && next_start > ch->start && next_start < end)
|
|
end = next_start;
|
|
}
|
|
ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
|
|
}
|
|
}
|
|
|
|
static int get_std_framerate(int i)
|
|
{
|
|
if (i < 30*12)
|
|
return (i + 1) * 1001;
|
|
i -= 30*12;
|
|
|
|
if (i < 30)
|
|
return (i + 31) * 1001 * 12;
|
|
i -= 30;
|
|
|
|
if (i < 3)
|
|
return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
|
|
|
|
i -= 3;
|
|
|
|
return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
|
|
}
|
|
|
|
/* Is the time base unreliable?
|
|
* This is a heuristic to balance between quick acceptance of the values in
|
|
* the headers vs. some extra checks.
|
|
* Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
|
|
* MPEG-2 commonly misuses field repeat flags to store different framerates.
|
|
* And there are "variable" fps files this needs to detect as well. */
|
|
static int tb_unreliable(AVCodecContext *c)
|
|
{
|
|
if (c->time_base.den >= 101LL * c->time_base.num ||
|
|
c->time_base.den < 5LL * c->time_base.num ||
|
|
// c->codec_tag == AV_RL32("DIVX") ||
|
|
// c->codec_tag == AV_RL32("XVID") ||
|
|
c->codec_tag == AV_RL32("mp4v") ||
|
|
c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
|
|
c->codec_id == AV_CODEC_ID_GIF ||
|
|
c->codec_id == AV_CODEC_ID_HEVC ||
|
|
c->codec_id == AV_CODEC_ID_H264)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
int ff_alloc_extradata(AVCodecParameters *par, int size)
|
|
{
|
|
av_freep(&par->extradata);
|
|
par->extradata_size = 0;
|
|
|
|
if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
|
|
return AVERROR(EINVAL);
|
|
|
|
par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!par->extradata)
|
|
return AVERROR(ENOMEM);
|
|
|
|
memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
|
|
par->extradata_size = size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
|
|
{
|
|
int ret = ff_alloc_extradata(par, size);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = avio_read(pb, par->extradata, size);
|
|
if (ret != size) {
|
|
av_freep(&par->extradata);
|
|
par->extradata_size = 0;
|
|
av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
|
|
return ret < 0 ? ret : AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
|
|
{
|
|
int i, j;
|
|
int64_t last = st->info->last_dts;
|
|
|
|
if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
|
|
&& ts - (uint64_t)last < INT64_MAX) {
|
|
double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
|
|
int64_t duration = ts - last;
|
|
|
|
if (!st->info->duration_error)
|
|
st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
|
|
if (!st->info->duration_error)
|
|
return AVERROR(ENOMEM);
|
|
|
|
// if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
|
|
// av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
|
|
for (i = 0; i<MAX_STD_TIMEBASES; i++) {
|
|
if (st->info->duration_error[0][1][i] < 1e10) {
|
|
int framerate = get_std_framerate(i);
|
|
double sdts = dts*framerate/(1001*12);
|
|
for (j= 0; j<2; j++) {
|
|
int64_t ticks = llrint(sdts+j*0.5);
|
|
double error= sdts - ticks + j*0.5;
|
|
st->info->duration_error[j][0][i] += error;
|
|
st->info->duration_error[j][1][i] += error*error;
|
|
}
|
|
}
|
|
}
|
|
if (st->info->rfps_duration_sum <= INT64_MAX - duration) {
|
|
st->info->duration_count++;
|
|
st->info->rfps_duration_sum += duration;
|
|
}
|
|
|
|
if (st->info->duration_count % 10 == 0) {
|
|
int n = st->info->duration_count;
|
|
for (i = 0; i<MAX_STD_TIMEBASES; i++) {
|
|
if (st->info->duration_error[0][1][i] < 1e10) {
|
|
double a0 = st->info->duration_error[0][0][i] / n;
|
|
double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
|
|
double a1 = st->info->duration_error[1][0][i] / n;
|
|
double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
|
|
if (error0 > 0.04 && error1 > 0.04) {
|
|
st->info->duration_error[0][1][i] = 2e10;
|
|
st->info->duration_error[1][1][i] = 2e10;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// ignore the first 4 values, they might have some random jitter
|
|
if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
|
|
st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
|
|
}
|
|
if (ts != AV_NOPTS_VALUE)
|
|
st->info->last_dts = ts;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ff_rfps_calculate(AVFormatContext *ic)
|
|
{
|
|
int i, j;
|
|
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
AVStream *st = ic->streams[i];
|
|
|
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
|
|
continue;
|
|
// the check for tb_unreliable() is not completely correct, since this is not about handling
|
|
// an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
|
|
// ipmovie.c produces.
|
|
if (tb_unreliable(st->internal->avctx) && st->info->duration_count > 15 && st->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num)
|
|
av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * st->info->duration_gcd, INT_MAX);
|
|
if (st->info->duration_count>1 && !st->r_frame_rate.num
|
|
&& tb_unreliable(st->internal->avctx)) {
|
|
int num = 0;
|
|
double best_error= 0.01;
|
|
AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
|
|
|
|
for (j= 0; j<MAX_STD_TIMEBASES; j++) {
|
|
int k;
|
|
|
|
if (st->info->codec_info_duration &&
|
|
st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
|
|
continue;
|
|
if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
|
|
continue;
|
|
|
|
if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
|
|
continue;
|
|
|
|
for (k= 0; k<2; k++) {
|
|
int n = st->info->duration_count;
|
|
double a= st->info->duration_error[k][0][j] / n;
|
|
double error= st->info->duration_error[k][1][j]/n - a*a;
|
|
|
|
if (error < best_error && best_error> 0.000000001) {
|
|
best_error= error;
|
|
num = get_std_framerate(j);
|
|
}
|
|
if (error < 0.02)
|
|
av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
|
|
}
|
|
}
|
|
// do not increase frame rate by more than 1 % in order to match a standard rate.
|
|
if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
|
|
av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
|
|
}
|
|
if ( !st->avg_frame_rate.num
|
|
&& st->r_frame_rate.num && st->info->rfps_duration_sum
|
|
&& st->info->codec_info_duration <= 0
|
|
&& st->info->duration_count > 2
|
|
&& fabs(1.0 / (av_q2d(st->r_frame_rate) * av_q2d(st->time_base)) - st->info->rfps_duration_sum / (double)st->info->duration_count) <= 1.0
|
|
) {
|
|
av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
|
|
st->avg_frame_rate = st->r_frame_rate;
|
|
}
|
|
|
|
av_freep(&st->info->duration_error);
|
|
st->info->last_dts = AV_NOPTS_VALUE;
|
|
st->info->duration_count = 0;
|
|
st->info->rfps_duration_sum = 0;
|
|
}
|
|
}
|
|
|
|
static int extract_extradata_check(AVStream *st)
|
|
{
|
|
const AVBitStreamFilter *f;
|
|
|
|
f = av_bsf_get_by_name("extract_extradata");
|
|
if (!f)
|
|
return 0;
|
|
|
|
if (f->codec_ids) {
|
|
const enum AVCodecID *ids;
|
|
for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
|
|
if (*ids == st->codecpar->codec_id)
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int extract_extradata_init(AVStream *st)
|
|
{
|
|
AVStreamInternal *sti = st->internal;
|
|
const AVBitStreamFilter *f;
|
|
int ret;
|
|
|
|
f = av_bsf_get_by_name("extract_extradata");
|
|
if (!f)
|
|
goto finish;
|
|
|
|
/* check that the codec id is supported */
|
|
ret = extract_extradata_check(st);
|
|
if (!ret)
|
|
goto finish;
|
|
|
|
sti->extract_extradata.pkt = av_packet_alloc();
|
|
if (!sti->extract_extradata.pkt)
|
|
return AVERROR(ENOMEM);
|
|
|
|
ret = av_bsf_alloc(f, &sti->extract_extradata.bsf);
|
|
if (ret < 0)
|
|
goto fail;
|
|
|
|
ret = avcodec_parameters_copy(sti->extract_extradata.bsf->par_in,
|
|
st->codecpar);
|
|
if (ret < 0)
|
|
goto fail;
|
|
|
|
sti->extract_extradata.bsf->time_base_in = st->time_base;
|
|
|
|
ret = av_bsf_init(sti->extract_extradata.bsf);
|
|
if (ret < 0)
|
|
goto fail;
|
|
|
|
finish:
|
|
sti->extract_extradata.inited = 1;
|
|
|
|
return 0;
|
|
fail:
|
|
av_bsf_free(&sti->extract_extradata.bsf);
|
|
av_packet_free(&sti->extract_extradata.pkt);
|
|
return ret;
|
|
}
|
|
|
|
static int extract_extradata(AVStream *st, const AVPacket *pkt)
|
|
{
|
|
AVStreamInternal *sti = st->internal;
|
|
AVPacket *pkt_ref;
|
|
int ret;
|
|
|
|
if (!sti->extract_extradata.inited) {
|
|
ret = extract_extradata_init(st);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (sti->extract_extradata.inited && !sti->extract_extradata.bsf)
|
|
return 0;
|
|
|
|
pkt_ref = sti->extract_extradata.pkt;
|
|
ret = av_packet_ref(pkt_ref, pkt);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = av_bsf_send_packet(sti->extract_extradata.bsf, pkt_ref);
|
|
if (ret < 0) {
|
|
av_packet_unref(pkt_ref);
|
|
return ret;
|
|
}
|
|
|
|
while (ret >= 0 && !sti->avctx->extradata) {
|
|
int extradata_size;
|
|
uint8_t *extradata;
|
|
|
|
ret = av_bsf_receive_packet(sti->extract_extradata.bsf, pkt_ref);
|
|
if (ret < 0) {
|
|
if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
|
|
return ret;
|
|
continue;
|
|
}
|
|
|
|
extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
|
|
&extradata_size);
|
|
|
|
if (extradata) {
|
|
av_assert0(!sti->avctx->extradata);
|
|
if ((unsigned)extradata_size < FF_MAX_EXTRADATA_SIZE)
|
|
sti->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!sti->avctx->extradata) {
|
|
av_packet_unref(pkt_ref);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
memcpy(sti->avctx->extradata, extradata, extradata_size);
|
|
sti->avctx->extradata_size = extradata_size;
|
|
}
|
|
av_packet_unref(pkt_ref);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int add_coded_side_data(AVStream *st, AVCodecContext *avctx)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < avctx->nb_coded_side_data; i++) {
|
|
const AVPacketSideData *sd_src = &avctx->coded_side_data[i];
|
|
uint8_t *dst_data;
|
|
dst_data = av_stream_new_side_data(st, sd_src->type, sd_src->size);
|
|
if (!dst_data)
|
|
return AVERROR(ENOMEM);
|
|
memcpy(dst_data, sd_src->data, sd_src->size);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
|
|
{
|
|
int i, count = 0, ret = 0, j;
|
|
int64_t read_size;
|
|
AVStream *st;
|
|
AVCodecContext *avctx;
|
|
AVPacket pkt1;
|
|
int64_t old_offset = avio_tell(ic->pb);
|
|
// new streams might appear, no options for those
|
|
int orig_nb_streams = ic->nb_streams;
|
|
int flush_codecs;
|
|
int64_t max_analyze_duration = ic->max_analyze_duration;
|
|
int64_t max_stream_analyze_duration;
|
|
int64_t max_subtitle_analyze_duration;
|
|
int64_t probesize = ic->probesize;
|
|
int eof_reached = 0;
|
|
int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
|
|
|
|
flush_codecs = probesize > 0;
|
|
|
|
av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
|
|
|
|
max_stream_analyze_duration = max_analyze_duration;
|
|
max_subtitle_analyze_duration = max_analyze_duration;
|
|
if (!max_analyze_duration) {
|
|
max_stream_analyze_duration =
|
|
max_analyze_duration = 5*AV_TIME_BASE;
|
|
max_subtitle_analyze_duration = 30*AV_TIME_BASE;
|
|
if (!strcmp(ic->iformat->name, "flv"))
|
|
max_stream_analyze_duration = 90*AV_TIME_BASE;
|
|
if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
|
|
max_stream_analyze_duration = 7*AV_TIME_BASE;
|
|
}
|
|
|
|
if (ic->pb)
|
|
av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
|
|
avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
|
|
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
const AVCodec *codec;
|
|
AVDictionary *thread_opt = NULL;
|
|
st = ic->streams[i];
|
|
avctx = st->internal->avctx;
|
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
|
|
st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
|
|
/* if (!st->time_base.num)
|
|
st->time_base = */
|
|
if (!avctx->time_base.num)
|
|
avctx->time_base = st->time_base;
|
|
}
|
|
|
|
/* check if the caller has overridden the codec id */
|
|
#if FF_API_LAVF_AVCTX
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
if (st->codec->codec_id != st->internal->orig_codec_id) {
|
|
st->codecpar->codec_id = st->codec->codec_id;
|
|
st->codecpar->codec_type = st->codec->codec_type;
|
|
st->internal->orig_codec_id = st->codec->codec_id;
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
// only for the split stuff
|
|
if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
|
|
st->parser = av_parser_init(st->codecpar->codec_id);
|
|
if (st->parser) {
|
|
if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
|
|
st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
|
|
} else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
|
|
st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
|
|
}
|
|
} else if (st->need_parsing) {
|
|
av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
|
|
"%s, packets or times may be invalid.\n",
|
|
avcodec_get_name(st->codecpar->codec_id));
|
|
}
|
|
}
|
|
|
|
if (st->codecpar->codec_id != st->internal->orig_codec_id)
|
|
st->internal->orig_codec_id = st->codecpar->codec_id;
|
|
|
|
ret = avcodec_parameters_to_context(avctx, st->codecpar);
|
|
if (ret < 0)
|
|
goto find_stream_info_err;
|
|
if (st->request_probe <= 0)
|
|
st->internal->avctx_inited = 1;
|
|
|
|
codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
|
|
|
|
/* Force thread count to 1 since the H.264 decoder will not extract
|
|
* SPS and PPS to extradata during multi-threaded decoding. */
|
|
av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
|
|
|
|
if (ic->codec_whitelist)
|
|
av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
|
|
|
|
/* Ensure that subtitle_header is properly set. */
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
|
|
&& codec && !avctx->codec) {
|
|
if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
|
|
av_log(ic, AV_LOG_WARNING,
|
|
"Failed to open codec in %s\n",__FUNCTION__);
|
|
}
|
|
|
|
// Try to just open decoders, in case this is enough to get parameters.
|
|
if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
|
|
if (codec && !avctx->codec)
|
|
if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
|
|
av_log(ic, AV_LOG_WARNING,
|
|
"Failed to open codec in %s\n",__FUNCTION__);
|
|
}
|
|
if (!options)
|
|
av_dict_free(&thread_opt);
|
|
}
|
|
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
#if FF_API_R_FRAME_RATE
|
|
ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
|
|
#endif
|
|
ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
|
|
ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
|
|
}
|
|
|
|
read_size = 0;
|
|
for (;;) {
|
|
const AVPacket *pkt;
|
|
int analyzed_all_streams;
|
|
if (ff_check_interrupt(&ic->interrupt_callback)) {
|
|
ret = AVERROR_EXIT;
|
|
av_log(ic, AV_LOG_DEBUG, "interrupted\n");
|
|
break;
|
|
}
|
|
|
|
/* check if one codec still needs to be handled */
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
int fps_analyze_framecount = 20;
|
|
int count;
|
|
|
|
st = ic->streams[i];
|
|
if (!has_codec_parameters(st, NULL))
|
|
break;
|
|
/* If the timebase is coarse (like the usual millisecond precision
|
|
* of mkv), we need to analyze more frames to reliably arrive at
|
|
* the correct fps. */
|
|
if (av_q2d(st->time_base) > 0.0005)
|
|
fps_analyze_framecount *= 2;
|
|
if (!tb_unreliable(st->internal->avctx))
|
|
fps_analyze_framecount = 0;
|
|
if (ic->fps_probe_size >= 0)
|
|
fps_analyze_framecount = ic->fps_probe_size;
|
|
if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
|
|
fps_analyze_framecount = 0;
|
|
/* variable fps and no guess at the real fps */
|
|
count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
|
|
st->info->codec_info_duration_fields/2 :
|
|
st->info->duration_count;
|
|
if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
|
|
st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
if (count < fps_analyze_framecount)
|
|
break;
|
|
}
|
|
// Look at the first 3 frames if there is evidence of frame delay
|
|
// but the decoder delay is not set.
|
|
if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
|
|
break;
|
|
if (!st->internal->avctx->extradata &&
|
|
(!st->internal->extract_extradata.inited ||
|
|
st->internal->extract_extradata.bsf) &&
|
|
extract_extradata_check(st))
|
|
break;
|
|
if (st->first_dts == AV_NOPTS_VALUE &&
|
|
!(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
|
|
st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
|
|
(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
|
|
st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
|
|
break;
|
|
}
|
|
analyzed_all_streams = 0;
|
|
if (!missing_streams || !*missing_streams)
|
|
if (i == ic->nb_streams) {
|
|
analyzed_all_streams = 1;
|
|
/* NOTE: If the format has no header, then we need to read some
|
|
* packets to get most of the streams, so we cannot stop here. */
|
|
if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
|
|
/* If we found the info for all the codecs, we can stop. */
|
|
ret = count;
|
|
av_log(ic, AV_LOG_DEBUG, "All info found\n");
|
|
flush_codecs = 0;
|
|
break;
|
|
}
|
|
}
|
|
/* We did not get all the codec info, but we read too much data. */
|
|
if (read_size >= probesize) {
|
|
ret = count;
|
|
av_log(ic, AV_LOG_DEBUG,
|
|
"Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
|
|
for (i = 0; i < ic->nb_streams; i++)
|
|
if (!ic->streams[i]->r_frame_rate.num &&
|
|
ic->streams[i]->info->duration_count <= 1 &&
|
|
ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
|
|
strcmp(ic->iformat->name, "image2"))
|
|
av_log(ic, AV_LOG_WARNING,
|
|
"Stream #%d: not enough frames to estimate rate; "
|
|
"consider increasing probesize\n", i);
|
|
break;
|
|
}
|
|
|
|
/* NOTE: A new stream can be added there if no header in file
|
|
* (AVFMTCTX_NOHEADER). */
|
|
ret = read_frame_internal(ic, &pkt1);
|
|
if (ret == AVERROR(EAGAIN))
|
|
continue;
|
|
|
|
if (ret < 0) {
|
|
/* EOF or error*/
|
|
eof_reached = 1;
|
|
break;
|
|
}
|
|
|
|
if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
|
|
ret = ff_packet_list_put(&ic->internal->packet_buffer,
|
|
&ic->internal->packet_buffer_end,
|
|
&pkt1, 0);
|
|
if (ret < 0)
|
|
goto unref_then_goto_end;
|
|
|
|
pkt = &ic->internal->packet_buffer_end->pkt;
|
|
} else {
|
|
pkt = &pkt1;
|
|
}
|
|
|
|
st = ic->streams[pkt->stream_index];
|
|
if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
|
|
read_size += pkt->size;
|
|
|
|
avctx = st->internal->avctx;
|
|
if (!st->internal->avctx_inited) {
|
|
ret = avcodec_parameters_to_context(avctx, st->codecpar);
|
|
if (ret < 0)
|
|
goto unref_then_goto_end;
|
|
st->internal->avctx_inited = 1;
|
|
}
|
|
|
|
if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
|
|
/* check for non-increasing dts */
|
|
if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
|
|
st->info->fps_last_dts >= pkt->dts) {
|
|
av_log(ic, AV_LOG_DEBUG,
|
|
"Non-increasing DTS in stream %d: packet %d with DTS "
|
|
"%"PRId64", packet %d with DTS %"PRId64"\n",
|
|
st->index, st->info->fps_last_dts_idx,
|
|
st->info->fps_last_dts, st->codec_info_nb_frames,
|
|
pkt->dts);
|
|
st->info->fps_first_dts =
|
|
st->info->fps_last_dts = AV_NOPTS_VALUE;
|
|
}
|
|
/* Check for a discontinuity in dts. If the difference in dts
|
|
* is more than 1000 times the average packet duration in the
|
|
* sequence, we treat it as a discontinuity. */
|
|
if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
|
|
st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
|
|
(pkt->dts - (uint64_t)st->info->fps_last_dts) / 1000 >
|
|
(st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
|
|
(st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
|
|
av_log(ic, AV_LOG_WARNING,
|
|
"DTS discontinuity in stream %d: packet %d with DTS "
|
|
"%"PRId64", packet %d with DTS %"PRId64"\n",
|
|
st->index, st->info->fps_last_dts_idx,
|
|
st->info->fps_last_dts, st->codec_info_nb_frames,
|
|
pkt->dts);
|
|
st->info->fps_first_dts =
|
|
st->info->fps_last_dts = AV_NOPTS_VALUE;
|
|
}
|
|
|
|
/* update stored dts values */
|
|
if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
|
|
st->info->fps_first_dts = pkt->dts;
|
|
st->info->fps_first_dts_idx = st->codec_info_nb_frames;
|
|
}
|
|
st->info->fps_last_dts = pkt->dts;
|
|
st->info->fps_last_dts_idx = st->codec_info_nb_frames;
|
|
}
|
|
if (st->codec_info_nb_frames>1) {
|
|
int64_t t = 0;
|
|
int64_t limit;
|
|
|
|
if (st->time_base.den > 0)
|
|
t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
|
|
if (st->avg_frame_rate.num > 0)
|
|
t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
|
|
|
|
if ( t == 0
|
|
&& st->codec_info_nb_frames>30
|
|
&& st->info->fps_first_dts != AV_NOPTS_VALUE
|
|
&& st->info->fps_last_dts != AV_NOPTS_VALUE)
|
|
t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
|
|
|
|
if (analyzed_all_streams) limit = max_analyze_duration;
|
|
else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
|
|
else limit = max_stream_analyze_duration;
|
|
|
|
if (t >= limit) {
|
|
av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
|
|
limit,
|
|
t, pkt->stream_index);
|
|
if (ic->flags & AVFMT_FLAG_NOBUFFER)
|
|
av_packet_unref(&pkt1);
|
|
break;
|
|
}
|
|
if (pkt->duration) {
|
|
if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
|
|
st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
|
|
} else
|
|
st->info->codec_info_duration += pkt->duration;
|
|
st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
|
|
}
|
|
}
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
#if FF_API_R_FRAME_RATE
|
|
ff_rfps_add_frame(ic, st, pkt->dts);
|
|
#endif
|
|
if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
|
|
st->info->frame_delay_evidence = 1;
|
|
}
|
|
if (!st->internal->avctx->extradata) {
|
|
ret = extract_extradata(st, pkt);
|
|
if (ret < 0)
|
|
goto unref_then_goto_end;
|
|
}
|
|
|
|
/* If still no information, we try to open the codec and to
|
|
* decompress the frame. We try to avoid that in most cases as
|
|
* it takes longer and uses more memory. For MPEG-4, we need to
|
|
* decompress for QuickTime.
|
|
*
|
|
* If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
|
|
* least one frame of codec data, this makes sure the codec initializes
|
|
* the channel configuration and does not only trust the values from
|
|
* the container. */
|
|
try_decode_frame(ic, st, pkt,
|
|
(options && i < orig_nb_streams) ? &options[i] : NULL);
|
|
|
|
if (ic->flags & AVFMT_FLAG_NOBUFFER)
|
|
av_packet_unref(&pkt1);
|
|
|
|
st->codec_info_nb_frames++;
|
|
count++;
|
|
}
|
|
|
|
if (eof_reached) {
|
|
int stream_index;
|
|
for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
|
|
st = ic->streams[stream_index];
|
|
avctx = st->internal->avctx;
|
|
if (!has_codec_parameters(st, NULL)) {
|
|
const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
|
|
if (codec && !avctx->codec) {
|
|
AVDictionary *opts = NULL;
|
|
if (ic->codec_whitelist)
|
|
av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
|
|
if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
|
|
av_log(ic, AV_LOG_WARNING,
|
|
"Failed to open codec in %s\n",__FUNCTION__);
|
|
av_dict_free(&opts);
|
|
}
|
|
}
|
|
|
|
// EOF already reached while reading the stream above.
|
|
// So continue with reoordering DTS with whatever delay we have.
|
|
if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
|
|
update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (flush_codecs) {
|
|
AVPacket empty_pkt = { 0 };
|
|
int err = 0;
|
|
av_init_packet(&empty_pkt);
|
|
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
|
|
st = ic->streams[i];
|
|
|
|
/* flush the decoders */
|
|
if (st->info->found_decoder == 1) {
|
|
do {
|
|
err = try_decode_frame(ic, st, &empty_pkt,
|
|
(options && i < orig_nb_streams)
|
|
? &options[i] : NULL);
|
|
} while (err > 0 && !has_codec_parameters(st, NULL));
|
|
|
|
if (err < 0) {
|
|
av_log(ic, AV_LOG_INFO,
|
|
"decoding for stream %d failed\n", st->index);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ff_rfps_calculate(ic);
|
|
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
avctx = st->internal->avctx;
|
|
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
|
|
uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
|
|
if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
|
|
avctx->codec_tag= tag;
|
|
}
|
|
|
|
/* estimate average framerate if not set by demuxer */
|
|
if (st->info->codec_info_duration_fields &&
|
|
!st->avg_frame_rate.num &&
|
|
st->info->codec_info_duration) {
|
|
int best_fps = 0;
|
|
double best_error = 0.01;
|
|
AVRational codec_frame_rate = avctx->framerate;
|
|
|
|
if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
|
|
st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
|
|
st->info->codec_info_duration < 0)
|
|
continue;
|
|
av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
|
|
st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
|
|
st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
|
|
|
|
/* Round guessed framerate to a "standard" framerate if it's
|
|
* within 1% of the original estimate. */
|
|
for (j = 0; j < MAX_STD_TIMEBASES; j++) {
|
|
AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
|
|
double error = fabs(av_q2d(st->avg_frame_rate) /
|
|
av_q2d(std_fps) - 1);
|
|
|
|
if (error < best_error) {
|
|
best_error = error;
|
|
best_fps = std_fps.num;
|
|
}
|
|
|
|
if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
|
|
error = fabs(av_q2d(codec_frame_rate) /
|
|
av_q2d(std_fps) - 1);
|
|
if (error < best_error) {
|
|
best_error = error;
|
|
best_fps = std_fps.num;
|
|
}
|
|
}
|
|
}
|
|
if (best_fps)
|
|
av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
|
|
best_fps, 12 * 1001, INT_MAX);
|
|
}
|
|
|
|
if (!st->r_frame_rate.num) {
|
|
if ( avctx->time_base.den * (int64_t) st->time_base.num
|
|
<= avctx->time_base.num * avctx->ticks_per_frame * (uint64_t) st->time_base.den) {
|
|
av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
|
|
avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
|
|
} else {
|
|
st->r_frame_rate.num = st->time_base.den;
|
|
st->r_frame_rate.den = st->time_base.num;
|
|
}
|
|
}
|
|
if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
|
|
AVRational hw_ratio = { avctx->height, avctx->width };
|
|
st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
|
|
hw_ratio);
|
|
}
|
|
} else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
if (!avctx->bits_per_coded_sample)
|
|
avctx->bits_per_coded_sample =
|
|
av_get_bits_per_sample(avctx->codec_id);
|
|
// set stream disposition based on audio service type
|
|
switch (avctx->audio_service_type) {
|
|
case AV_AUDIO_SERVICE_TYPE_EFFECTS:
|
|
st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
|
|
break;
|
|
case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
|
|
st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
|
|
break;
|
|
case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
|
|
st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
|
|
break;
|
|
case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
|
|
st->disposition = AV_DISPOSITION_COMMENT;
|
|
break;
|
|
case AV_AUDIO_SERVICE_TYPE_KARAOKE:
|
|
st->disposition = AV_DISPOSITION_KARAOKE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (probesize)
|
|
estimate_timings(ic, old_offset);
|
|
|
|
av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
|
|
|
|
if (ret >= 0 && ic->nb_streams)
|
|
/* We could not have all the codec parameters before EOF. */
|
|
ret = -1;
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
const char *errmsg;
|
|
st = ic->streams[i];
|
|
|
|
/* if no packet was ever seen, update context now for has_codec_parameters */
|
|
if (!st->internal->avctx_inited) {
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
|
|
st->codecpar->format == AV_SAMPLE_FMT_NONE)
|
|
st->codecpar->format = st->internal->avctx->sample_fmt;
|
|
ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
|
|
if (ret < 0)
|
|
goto find_stream_info_err;
|
|
}
|
|
if (!has_codec_parameters(st, &errmsg)) {
|
|
char buf[256];
|
|
avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
|
|
av_log(ic, AV_LOG_WARNING,
|
|
"Could not find codec parameters for stream %d (%s): %s\n"
|
|
"Consider increasing the value for the 'analyzeduration' (%"PRId64") and 'probesize' (%"PRId64") options\n",
|
|
i, buf, errmsg, ic->max_analyze_duration, ic->probesize);
|
|
} else {
|
|
ret = 0;
|
|
}
|
|
}
|
|
|
|
compute_chapters_end(ic);
|
|
|
|
/* update the stream parameters from the internal codec contexts */
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
|
|
if (st->internal->avctx_inited) {
|
|
int orig_w = st->codecpar->width;
|
|
int orig_h = st->codecpar->height;
|
|
ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
|
|
if (ret < 0)
|
|
goto find_stream_info_err;
|
|
ret = add_coded_side_data(st, st->internal->avctx);
|
|
if (ret < 0)
|
|
goto find_stream_info_err;
|
|
#if FF_API_LOWRES
|
|
// The decoder might reduce the video size by the lowres factor.
|
|
if (st->internal->avctx->lowres && orig_w) {
|
|
st->codecpar->width = orig_w;
|
|
st->codecpar->height = orig_h;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#if FF_API_LAVF_AVCTX
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
ret = avcodec_parameters_to_context(st->codec, st->codecpar);
|
|
if (ret < 0)
|
|
goto find_stream_info_err;
|
|
|
|
#if FF_API_LOWRES
|
|
// The old API (AVStream.codec) "requires" the resolution to be adjusted
|
|
// by the lowres factor.
|
|
if (st->internal->avctx->lowres && st->internal->avctx->width) {
|
|
st->codec->lowres = st->internal->avctx->lowres;
|
|
st->codec->width = st->internal->avctx->width;
|
|
st->codec->height = st->internal->avctx->height;
|
|
}
|
|
#endif
|
|
|
|
if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
|
|
st->codec->time_base = st->internal->avctx->time_base;
|
|
st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
|
|
}
|
|
st->codec->framerate = st->avg_frame_rate;
|
|
|
|
if (st->internal->avctx->subtitle_header) {
|
|
st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
|
|
if (!st->codec->subtitle_header)
|
|
goto find_stream_info_err;
|
|
st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
|
|
memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
|
|
st->codec->subtitle_header_size);
|
|
}
|
|
|
|
// Fields unavailable in AVCodecParameters
|
|
st->codec->coded_width = st->internal->avctx->coded_width;
|
|
st->codec->coded_height = st->internal->avctx->coded_height;
|
|
st->codec->properties = st->internal->avctx->properties;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
st->internal->avctx_inited = 0;
|
|
}
|
|
|
|
find_stream_info_err:
|
|
for (i = 0; i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
if (st->info)
|
|
av_freep(&st->info->duration_error);
|
|
avcodec_close(ic->streams[i]->internal->avctx);
|
|
av_freep(&ic->streams[i]->info);
|
|
av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
|
|
av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
|
|
}
|
|
if (ic->pb)
|
|
av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
|
|
avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
|
|
return ret;
|
|
|
|
unref_then_goto_end:
|
|
av_packet_unref(&pkt1);
|
|
goto find_stream_info_err;
|
|
}
|
|
|
|
AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
|
|
{
|
|
int i, j;
|
|
|
|
for (i = 0; i < ic->nb_programs; i++) {
|
|
if (ic->programs[i] == last) {
|
|
last = NULL;
|
|
} else {
|
|
if (!last)
|
|
for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
|
|
if (ic->programs[i]->stream_index[j] == s)
|
|
return ic->programs[i];
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
|
|
int wanted_stream_nb, int related_stream,
|
|
AVCodec **decoder_ret, int flags)
|
|
{
|
|
int i, nb_streams = ic->nb_streams;
|
|
int ret = AVERROR_STREAM_NOT_FOUND;
|
|
int best_count = -1, best_multiframe = -1, best_disposition = -1;
|
|
int count, multiframe, disposition;
|
|
int64_t best_bitrate = -1;
|
|
int64_t bitrate;
|
|
unsigned *program = NULL;
|
|
const AVCodec *decoder = NULL, *best_decoder = NULL;
|
|
|
|
if (related_stream >= 0 && wanted_stream_nb < 0) {
|
|
AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
|
|
if (p) {
|
|
program = p->stream_index;
|
|
nb_streams = p->nb_stream_indexes;
|
|
}
|
|
}
|
|
for (i = 0; i < nb_streams; i++) {
|
|
int real_stream_index = program ? program[i] : i;
|
|
AVStream *st = ic->streams[real_stream_index];
|
|
AVCodecParameters *par = st->codecpar;
|
|
if (par->codec_type != type)
|
|
continue;
|
|
if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
|
|
continue;
|
|
if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
|
|
continue;
|
|
if (decoder_ret) {
|
|
decoder = find_decoder(ic, st, par->codec_id);
|
|
if (!decoder) {
|
|
if (ret < 0)
|
|
ret = AVERROR_DECODER_NOT_FOUND;
|
|
continue;
|
|
}
|
|
}
|
|
disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
|
|
+ !! (st->disposition & AV_DISPOSITION_DEFAULT);
|
|
count = st->codec_info_nb_frames;
|
|
bitrate = par->bit_rate;
|
|
multiframe = FFMIN(5, count);
|
|
if ((best_disposition > disposition) ||
|
|
(best_disposition == disposition && best_multiframe > multiframe) ||
|
|
(best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
|
|
(best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
|
|
continue;
|
|
best_disposition = disposition;
|
|
best_count = count;
|
|
best_bitrate = bitrate;
|
|
best_multiframe = multiframe;
|
|
ret = real_stream_index;
|
|
best_decoder = decoder;
|
|
if (program && i == nb_streams - 1 && ret < 0) {
|
|
program = NULL;
|
|
nb_streams = ic->nb_streams;
|
|
/* no related stream found, try again with everything */
|
|
i = 0;
|
|
}
|
|
}
|
|
if (decoder_ret)
|
|
*decoder_ret = (AVCodec*)best_decoder;
|
|
return ret;
|
|
}
|
|
|
|
/*******************************************************/
|
|
|
|
int av_read_play(AVFormatContext *s)
|
|
{
|
|
if (s->iformat->read_play)
|
|
return s->iformat->read_play(s);
|
|
if (s->pb)
|
|
return avio_pause(s->pb, 0);
|
|
return AVERROR(ENOSYS);
|
|
}
|
|
|
|
int av_read_pause(AVFormatContext *s)
|
|
{
|
|
if (s->iformat->read_pause)
|
|
return s->iformat->read_pause(s);
|
|
if (s->pb)
|
|
return avio_pause(s->pb, 1);
|
|
return AVERROR(ENOSYS);
|
|
}
|
|
|
|
int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
|
|
{
|
|
int ret, i;
|
|
|
|
dst->id = src->id;
|
|
dst->time_base = src->time_base;
|
|
dst->nb_frames = src->nb_frames;
|
|
dst->disposition = src->disposition;
|
|
dst->sample_aspect_ratio = src->sample_aspect_ratio;
|
|
dst->avg_frame_rate = src->avg_frame_rate;
|
|
dst->r_frame_rate = src->r_frame_rate;
|
|
|
|
av_dict_free(&dst->metadata);
|
|
ret = av_dict_copy(&dst->metadata, src->metadata, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Free existing side data*/
|
|
for (i = 0; i < dst->nb_side_data; i++)
|
|
av_free(dst->side_data[i].data);
|
|
av_freep(&dst->side_data);
|
|
dst->nb_side_data = 0;
|
|
|
|
/* Copy side data if present */
|
|
if (src->nb_side_data) {
|
|
dst->side_data = av_mallocz_array(src->nb_side_data,
|
|
sizeof(AVPacketSideData));
|
|
if (!dst->side_data)
|
|
return AVERROR(ENOMEM);
|
|
dst->nb_side_data = src->nb_side_data;
|
|
|
|
for (i = 0; i < src->nb_side_data; i++) {
|
|
uint8_t *data = av_memdup(src->side_data[i].data,
|
|
src->side_data[i].size);
|
|
if (!data)
|
|
return AVERROR(ENOMEM);
|
|
dst->side_data[i].type = src->side_data[i].type;
|
|
dst->side_data[i].size = src->side_data[i].size;
|
|
dst->side_data[i].data = data;
|
|
}
|
|
}
|
|
|
|
#if FF_API_LAVF_FFSERVER
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
av_freep(&dst->recommended_encoder_configuration);
|
|
if (src->recommended_encoder_configuration) {
|
|
const char *conf_str = src->recommended_encoder_configuration;
|
|
dst->recommended_encoder_configuration = av_strdup(conf_str);
|
|
if (!dst->recommended_encoder_configuration)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void free_stream(AVStream **pst)
|
|
{
|
|
AVStream *st = *pst;
|
|
int i;
|
|
|
|
if (!st)
|
|
return;
|
|
|
|
for (i = 0; i < st->nb_side_data; i++)
|
|
av_freep(&st->side_data[i].data);
|
|
av_freep(&st->side_data);
|
|
|
|
if (st->parser)
|
|
av_parser_close(st->parser);
|
|
|
|
if (st->attached_pic.data)
|
|
av_packet_unref(&st->attached_pic);
|
|
|
|
if (st->internal) {
|
|
avcodec_free_context(&st->internal->avctx);
|
|
av_bsf_free(&st->internal->bsfc);
|
|
av_freep(&st->internal->priv_pts);
|
|
av_bsf_free(&st->internal->extract_extradata.bsf);
|
|
av_packet_free(&st->internal->extract_extradata.pkt);
|
|
}
|
|
av_freep(&st->internal);
|
|
|
|
av_dict_free(&st->metadata);
|
|
avcodec_parameters_free(&st->codecpar);
|
|
av_freep(&st->probe_data.buf);
|
|
av_freep(&st->index_entries);
|
|
#if FF_API_LAVF_AVCTX
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
avcodec_free_context(&st->codec);
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
av_freep(&st->priv_data);
|
|
if (st->info)
|
|
av_freep(&st->info->duration_error);
|
|
av_freep(&st->info);
|
|
#if FF_API_LAVF_FFSERVER
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
av_freep(&st->recommended_encoder_configuration);
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
av_freep(pst);
|
|
}
|
|
|
|
void ff_free_stream(AVFormatContext *s, AVStream *st)
|
|
{
|
|
av_assert0(s->nb_streams>0);
|
|
av_assert0(s->streams[ s->nb_streams - 1 ] == st);
|
|
|
|
free_stream(&s->streams[ --s->nb_streams ]);
|
|
}
|
|
|
|
void avformat_free_context(AVFormatContext *s)
|
|
{
|
|
int i;
|
|
|
|
if (!s)
|
|
return;
|
|
|
|
if (s->oformat && s->oformat->deinit && s->internal->initialized)
|
|
s->oformat->deinit(s);
|
|
|
|
av_opt_free(s);
|
|
if (s->iformat && s->iformat->priv_class && s->priv_data)
|
|
av_opt_free(s->priv_data);
|
|
if (s->oformat && s->oformat->priv_class && s->priv_data)
|
|
av_opt_free(s->priv_data);
|
|
|
|
for (i = 0; i < s->nb_streams; i++)
|
|
free_stream(&s->streams[i]);
|
|
s->nb_streams = 0;
|
|
|
|
for (i = 0; i < s->nb_programs; i++) {
|
|
av_dict_free(&s->programs[i]->metadata);
|
|
av_freep(&s->programs[i]->stream_index);
|
|
av_freep(&s->programs[i]);
|
|
}
|
|
s->nb_programs = 0;
|
|
|
|
av_freep(&s->programs);
|
|
av_freep(&s->priv_data);
|
|
while (s->nb_chapters--) {
|
|
av_dict_free(&s->chapters[s->nb_chapters]->metadata);
|
|
av_freep(&s->chapters[s->nb_chapters]);
|
|
}
|
|
av_freep(&s->chapters);
|
|
av_dict_free(&s->metadata);
|
|
av_dict_free(&s->internal->id3v2_meta);
|
|
av_freep(&s->streams);
|
|
flush_packet_queue(s);
|
|
av_freep(&s->internal);
|
|
av_freep(&s->url);
|
|
av_free(s);
|
|
}
|
|
|
|
void avformat_close_input(AVFormatContext **ps)
|
|
{
|
|
AVFormatContext *s;
|
|
AVIOContext *pb;
|
|
|
|
if (!ps || !*ps)
|
|
return;
|
|
|
|
s = *ps;
|
|
pb = s->pb;
|
|
|
|
if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
|
|
(s->flags & AVFMT_FLAG_CUSTOM_IO))
|
|
pb = NULL;
|
|
|
|
flush_packet_queue(s);
|
|
|
|
if (s->iformat)
|
|
if (s->iformat->read_close)
|
|
s->iformat->read_close(s);
|
|
|
|
avformat_free_context(s);
|
|
|
|
*ps = NULL;
|
|
|
|
avio_close(pb);
|
|
}
|
|
|
|
AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
|
|
{
|
|
AVStream *st;
|
|
int i;
|
|
AVStream **streams;
|
|
|
|
if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
|
|
if (s->max_streams < INT_MAX/sizeof(*streams))
|
|
av_log(s, AV_LOG_ERROR, "Number of streams exceeds max_streams parameter (%d), see the documentation if you wish to increase it\n", s->max_streams);
|
|
return NULL;
|
|
}
|
|
streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
|
|
if (!streams)
|
|
return NULL;
|
|
s->streams = streams;
|
|
|
|
st = av_mallocz(sizeof(AVStream));
|
|
if (!st)
|
|
return NULL;
|
|
if (!(st->info = av_mallocz(sizeof(*st->info)))) {
|
|
av_free(st);
|
|
return NULL;
|
|
}
|
|
st->info->last_dts = AV_NOPTS_VALUE;
|
|
|
|
#if FF_API_LAVF_AVCTX
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
st->codec = avcodec_alloc_context3(c);
|
|
if (!st->codec) {
|
|
av_free(st->info);
|
|
av_free(st);
|
|
return NULL;
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
st->internal = av_mallocz(sizeof(*st->internal));
|
|
if (!st->internal)
|
|
goto fail;
|
|
|
|
st->codecpar = avcodec_parameters_alloc();
|
|
if (!st->codecpar)
|
|
goto fail;
|
|
|
|
st->internal->avctx = avcodec_alloc_context3(NULL);
|
|
if (!st->internal->avctx)
|
|
goto fail;
|
|
|
|
if (s->iformat) {
|
|
#if FF_API_LAVF_AVCTX
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
/* no default bitrate if decoding */
|
|
st->codec->bit_rate = 0;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
/* default pts setting is MPEG-like */
|
|
avpriv_set_pts_info(st, 33, 1, 90000);
|
|
/* we set the current DTS to 0 so that formats without any timestamps
|
|
* but durations get some timestamps, formats with some unknown
|
|
* timestamps have their first few packets buffered and the
|
|
* timestamps corrected before they are returned to the user */
|
|
st->cur_dts = RELATIVE_TS_BASE;
|
|
} else {
|
|
st->cur_dts = AV_NOPTS_VALUE;
|
|
}
|
|
|
|
st->index = s->nb_streams;
|
|
st->start_time = AV_NOPTS_VALUE;
|
|
st->duration = AV_NOPTS_VALUE;
|
|
st->first_dts = AV_NOPTS_VALUE;
|
|
st->probe_packets = s->max_probe_packets;
|
|
st->pts_wrap_reference = AV_NOPTS_VALUE;
|
|
st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
|
|
|
|
st->last_IP_pts = AV_NOPTS_VALUE;
|
|
st->last_dts_for_order_check = AV_NOPTS_VALUE;
|
|
for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
|
|
st->pts_buffer[i] = AV_NOPTS_VALUE;
|
|
|
|
st->sample_aspect_ratio = (AVRational) { 0, 1 };
|
|
|
|
#if FF_API_R_FRAME_RATE
|
|
st->info->last_dts = AV_NOPTS_VALUE;
|
|
#endif
|
|
st->info->fps_first_dts = AV_NOPTS_VALUE;
|
|
st->info->fps_last_dts = AV_NOPTS_VALUE;
|
|
|
|
st->inject_global_side_data = s->internal->inject_global_side_data;
|
|
|
|
st->internal->need_context_update = 1;
|
|
|
|
s->streams[s->nb_streams++] = st;
|
|
return st;
|
|
fail:
|
|
free_stream(&st);
|
|
return NULL;
|
|
}
|
|
|
|
AVProgram *av_new_program(AVFormatContext *ac, int id)
|
|
{
|
|
AVProgram *program = NULL;
|
|
int i;
|
|
|
|
av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
|
|
|
|
for (i = 0; i < ac->nb_programs; i++)
|
|
if (ac->programs[i]->id == id)
|
|
program = ac->programs[i];
|
|
|
|
if (!program) {
|
|
program = av_mallocz(sizeof(AVProgram));
|
|
if (!program)
|
|
return NULL;
|
|
dynarray_add(&ac->programs, &ac->nb_programs, program);
|
|
program->discard = AVDISCARD_NONE;
|
|
program->pmt_version = -1;
|
|
}
|
|
program->id = id;
|
|
program->pts_wrap_reference = AV_NOPTS_VALUE;
|
|
program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
|
|
|
|
program->start_time =
|
|
program->end_time = AV_NOPTS_VALUE;
|
|
|
|
return program;
|
|
}
|
|
|
|
AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
|
|
int64_t start, int64_t end, const char *title)
|
|
{
|
|
AVChapter *chapter = NULL;
|
|
int i;
|
|
|
|
if (end != AV_NOPTS_VALUE && start > end) {
|
|
av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
|
|
return NULL;
|
|
}
|
|
|
|
for (i = 0; i < s->nb_chapters; i++)
|
|
if (s->chapters[i]->id == id)
|
|
chapter = s->chapters[i];
|
|
|
|
if (!chapter) {
|
|
chapter = av_mallocz(sizeof(AVChapter));
|
|
if (!chapter)
|
|
return NULL;
|
|
dynarray_add(&s->chapters, &s->nb_chapters, chapter);
|
|
}
|
|
av_dict_set(&chapter->metadata, "title", title, 0);
|
|
chapter->id = id;
|
|
chapter->time_base = time_base;
|
|
chapter->start = start;
|
|
chapter->end = end;
|
|
|
|
return chapter;
|
|
}
|
|
|
|
void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
|
|
{
|
|
int i, j;
|
|
AVProgram *program = NULL;
|
|
void *tmp;
|
|
|
|
if (idx >= ac->nb_streams) {
|
|
av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < ac->nb_programs; i++) {
|
|
if (ac->programs[i]->id != progid)
|
|
continue;
|
|
program = ac->programs[i];
|
|
for (j = 0; j < program->nb_stream_indexes; j++)
|
|
if (program->stream_index[j] == idx)
|
|
return;
|
|
|
|
tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
|
|
if (!tmp)
|
|
return;
|
|
program->stream_index = tmp;
|
|
program->stream_index[program->nb_stream_indexes++] = idx;
|
|
return;
|
|
}
|
|
}
|
|
|
|
uint64_t ff_ntp_time(void)
|
|
{
|
|
return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
|
|
}
|
|
|
|
uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
|
|
{
|
|
uint64_t ntp_ts, frac_part, sec;
|
|
uint32_t usec;
|
|
|
|
//current ntp time in seconds and micro seconds
|
|
sec = ntp_time_us / 1000000;
|
|
usec = ntp_time_us % 1000000;
|
|
|
|
//encoding in ntp timestamp format
|
|
frac_part = usec * 0xFFFFFFFFULL;
|
|
frac_part /= 1000000;
|
|
|
|
if (sec > 0xFFFFFFFFULL)
|
|
av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
|
|
|
|
ntp_ts = sec << 32;
|
|
ntp_ts |= frac_part;
|
|
|
|
return ntp_ts;
|
|
}
|
|
|
|
int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
|
|
{
|
|
const char *p;
|
|
char *q, buf1[20], c;
|
|
int nd, len, percentd_found;
|
|
|
|
q = buf;
|
|
p = path;
|
|
percentd_found = 0;
|
|
for (;;) {
|
|
c = *p++;
|
|
if (c == '\0')
|
|
break;
|
|
if (c == '%') {
|
|
do {
|
|
nd = 0;
|
|
while (av_isdigit(*p))
|
|
nd = nd * 10 + *p++ - '0';
|
|
c = *p++;
|
|
} while (av_isdigit(c));
|
|
|
|
switch (c) {
|
|
case '%':
|
|
goto addchar;
|
|
case 'd':
|
|
if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
|
|
goto fail;
|
|
percentd_found = 1;
|
|
if (number < 0)
|
|
nd += 1;
|
|
snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
|
|
len = strlen(buf1);
|
|
if ((q - buf + len) > buf_size - 1)
|
|
goto fail;
|
|
memcpy(q, buf1, len);
|
|
q += len;
|
|
break;
|
|
default:
|
|
goto fail;
|
|
}
|
|
} else {
|
|
addchar:
|
|
if ((q - buf) < buf_size - 1)
|
|
*q++ = c;
|
|
}
|
|
}
|
|
if (!percentd_found)
|
|
goto fail;
|
|
*q = '\0';
|
|
return 0;
|
|
fail:
|
|
*q = '\0';
|
|
return -1;
|
|
}
|
|
|
|
int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
|
|
{
|
|
return av_get_frame_filename2(buf, buf_size, path, number, 0);
|
|
}
|
|
|
|
void av_url_split(char *proto, int proto_size,
|
|
char *authorization, int authorization_size,
|
|
char *hostname, int hostname_size,
|
|
int *port_ptr, char *path, int path_size, const char *url)
|
|
{
|
|
const char *p, *ls, *at, *at2, *col, *brk;
|
|
|
|
if (port_ptr)
|
|
*port_ptr = -1;
|
|
if (proto_size > 0)
|
|
proto[0] = 0;
|
|
if (authorization_size > 0)
|
|
authorization[0] = 0;
|
|
if (hostname_size > 0)
|
|
hostname[0] = 0;
|
|
if (path_size > 0)
|
|
path[0] = 0;
|
|
|
|
/* parse protocol */
|
|
if ((p = strchr(url, ':'))) {
|
|
av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
|
|
p++; /* skip ':' */
|
|
if (*p == '/')
|
|
p++;
|
|
if (*p == '/')
|
|
p++;
|
|
} else {
|
|
/* no protocol means plain filename */
|
|
av_strlcpy(path, url, path_size);
|
|
return;
|
|
}
|
|
|
|
/* separate path from hostname */
|
|
ls = p + strcspn(p, "/?#");
|
|
av_strlcpy(path, ls, path_size);
|
|
|
|
/* the rest is hostname, use that to parse auth/port */
|
|
if (ls != p) {
|
|
/* authorization (user[:pass]@hostname) */
|
|
at2 = p;
|
|
while ((at = strchr(p, '@')) && at < ls) {
|
|
av_strlcpy(authorization, at2,
|
|
FFMIN(authorization_size, at + 1 - at2));
|
|
p = at + 1; /* skip '@' */
|
|
}
|
|
|
|
if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
|
|
/* [host]:port */
|
|
av_strlcpy(hostname, p + 1,
|
|
FFMIN(hostname_size, brk - p));
|
|
if (brk[1] == ':' && port_ptr)
|
|
*port_ptr = atoi(brk + 2);
|
|
} else if ((col = strchr(p, ':')) && col < ls) {
|
|
av_strlcpy(hostname, p,
|
|
FFMIN(col + 1 - p, hostname_size));
|
|
if (port_ptr)
|
|
*port_ptr = atoi(col + 1);
|
|
} else
|
|
av_strlcpy(hostname, p,
|
|
FFMIN(ls + 1 - p, hostname_size));
|
|
}
|
|
}
|
|
|
|
int ff_mkdir_p(const char *path)
|
|
{
|
|
int ret = 0;
|
|
char *temp = av_strdup(path);
|
|
char *pos = temp;
|
|
char tmp_ch = '\0';
|
|
|
|
if (!path || !temp) {
|
|
return -1;
|
|
}
|
|
|
|
if (!av_strncasecmp(temp, "/", 1) || !av_strncasecmp(temp, "\\", 1)) {
|
|
pos++;
|
|
} else if (!av_strncasecmp(temp, "./", 2) || !av_strncasecmp(temp, ".\\", 2)) {
|
|
pos += 2;
|
|
}
|
|
|
|
for ( ; *pos != '\0'; ++pos) {
|
|
if (*pos == '/' || *pos == '\\') {
|
|
tmp_ch = *pos;
|
|
*pos = '\0';
|
|
ret = mkdir(temp, 0755);
|
|
*pos = tmp_ch;
|
|
}
|
|
}
|
|
|
|
if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
|
|
ret = mkdir(temp, 0755);
|
|
}
|
|
|
|
av_free(temp);
|
|
return ret;
|
|
}
|
|
|
|
char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
|
|
{
|
|
int i;
|
|
static const char hex_table_uc[16] = { '0', '1', '2', '3',
|
|
'4', '5', '6', '7',
|
|
'8', '9', 'A', 'B',
|
|
'C', 'D', 'E', 'F' };
|
|
static const char hex_table_lc[16] = { '0', '1', '2', '3',
|
|
'4', '5', '6', '7',
|
|
'8', '9', 'a', 'b',
|
|
'c', 'd', 'e', 'f' };
|
|
const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
|
|
|
|
for (i = 0; i < s; i++) {
|
|
buff[i * 2] = hex_table[src[i] >> 4];
|
|
buff[i * 2 + 1] = hex_table[src[i] & 0xF];
|
|
}
|
|
|
|
return buff;
|
|
}
|
|
|
|
int ff_hex_to_data(uint8_t *data, const char *p)
|
|
{
|
|
int c, len, v;
|
|
|
|
len = 0;
|
|
v = 1;
|
|
for (;;) {
|
|
p += strspn(p, SPACE_CHARS);
|
|
if (*p == '\0')
|
|
break;
|
|
c = av_toupper((unsigned char) *p++);
|
|
if (c >= '0' && c <= '9')
|
|
c = c - '0';
|
|
else if (c >= 'A' && c <= 'F')
|
|
c = c - 'A' + 10;
|
|
else
|
|
break;
|
|
v = (v << 4) | c;
|
|
if (v & 0x100) {
|
|
if (data)
|
|
data[len] = v;
|
|
len++;
|
|
v = 1;
|
|
}
|
|
}
|
|
return len;
|
|
}
|
|
|
|
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
|
|
unsigned int pts_num, unsigned int pts_den)
|
|
{
|
|
AVRational new_tb;
|
|
if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
|
|
if (new_tb.num != pts_num)
|
|
av_log(NULL, AV_LOG_DEBUG,
|
|
"st:%d removing common factor %d from timebase\n",
|
|
s->index, pts_num / new_tb.num);
|
|
} else
|
|
av_log(NULL, AV_LOG_WARNING,
|
|
"st:%d has too large timebase, reducing\n", s->index);
|
|
|
|
if (new_tb.num <= 0 || new_tb.den <= 0) {
|
|
av_log(NULL, AV_LOG_ERROR,
|
|
"Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
|
|
new_tb.num, new_tb.den,
|
|
s->index);
|
|
return;
|
|
}
|
|
s->time_base = new_tb;
|
|
#if FF_API_LAVF_AVCTX
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
s->codec->pkt_timebase = new_tb;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
s->internal->avctx->pkt_timebase = new_tb;
|
|
s->pts_wrap_bits = pts_wrap_bits;
|
|
}
|
|
|
|
void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
|
|
void *context)
|
|
{
|
|
const char *ptr = str;
|
|
|
|
/* Parse key=value pairs. */
|
|
for (;;) {
|
|
const char *key;
|
|
char *dest = NULL, *dest_end;
|
|
int key_len, dest_len = 0;
|
|
|
|
/* Skip whitespace and potential commas. */
|
|
while (*ptr && (av_isspace(*ptr) || *ptr == ','))
|
|
ptr++;
|
|
if (!*ptr)
|
|
break;
|
|
|
|
key = ptr;
|
|
|
|
if (!(ptr = strchr(key, '=')))
|
|
break;
|
|
ptr++;
|
|
key_len = ptr - key;
|
|
|
|
callback_get_buf(context, key, key_len, &dest, &dest_len);
|
|
dest_end = dest + dest_len - 1;
|
|
|
|
if (*ptr == '\"') {
|
|
ptr++;
|
|
while (*ptr && *ptr != '\"') {
|
|
if (*ptr == '\\') {
|
|
if (!ptr[1])
|
|
break;
|
|
if (dest && dest < dest_end)
|
|
*dest++ = ptr[1];
|
|
ptr += 2;
|
|
} else {
|
|
if (dest && dest < dest_end)
|
|
*dest++ = *ptr;
|
|
ptr++;
|
|
}
|
|
}
|
|
if (*ptr == '\"')
|
|
ptr++;
|
|
} else {
|
|
for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
|
|
if (dest && dest < dest_end)
|
|
*dest++ = *ptr;
|
|
}
|
|
if (dest)
|
|
*dest = 0;
|
|
}
|
|
}
|
|
|
|
int ff_find_stream_index(AVFormatContext *s, int id)
|
|
{
|
|
int i;
|
|
for (i = 0; i < s->nb_streams; i++)
|
|
if (s->streams[i]->id == id)
|
|
return i;
|
|
return -1;
|
|
}
|
|
|
|
int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
|
|
int std_compliance)
|
|
{
|
|
if (ofmt) {
|
|
unsigned int codec_tag;
|
|
if (ofmt->query_codec)
|
|
return ofmt->query_codec(codec_id, std_compliance);
|
|
else if (ofmt->codec_tag)
|
|
return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
|
|
else if (codec_id == ofmt->video_codec ||
|
|
codec_id == ofmt->audio_codec ||
|
|
codec_id == ofmt->subtitle_codec ||
|
|
codec_id == ofmt->data_codec)
|
|
return 1;
|
|
}
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
int avformat_network_init(void)
|
|
{
|
|
#if CONFIG_NETWORK
|
|
int ret;
|
|
if ((ret = ff_network_init()) < 0)
|
|
return ret;
|
|
if ((ret = ff_tls_init()) < 0)
|
|
return ret;
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
int avformat_network_deinit(void)
|
|
{
|
|
#if CONFIG_NETWORK
|
|
ff_network_close();
|
|
ff_tls_deinit();
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
int ff_add_param_change(AVPacket *pkt, int32_t channels,
|
|
uint64_t channel_layout, int32_t sample_rate,
|
|
int32_t width, int32_t height)
|
|
{
|
|
uint32_t flags = 0;
|
|
int size = 4;
|
|
uint8_t *data;
|
|
if (!pkt)
|
|
return AVERROR(EINVAL);
|
|
if (channels) {
|
|
size += 4;
|
|
flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
|
|
}
|
|
if (channel_layout) {
|
|
size += 8;
|
|
flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
|
|
}
|
|
if (sample_rate) {
|
|
size += 4;
|
|
flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
|
|
}
|
|
if (width || height) {
|
|
size += 8;
|
|
flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
|
|
}
|
|
data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
|
|
if (!data)
|
|
return AVERROR(ENOMEM);
|
|
bytestream_put_le32(&data, flags);
|
|
if (channels)
|
|
bytestream_put_le32(&data, channels);
|
|
if (channel_layout)
|
|
bytestream_put_le64(&data, channel_layout);
|
|
if (sample_rate)
|
|
bytestream_put_le32(&data, sample_rate);
|
|
if (width || height) {
|
|
bytestream_put_le32(&data, width);
|
|
bytestream_put_le32(&data, height);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
|
|
{
|
|
AVRational undef = {0, 1};
|
|
AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
|
|
AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
|
|
AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
|
|
|
|
av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
|
|
stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
|
|
if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
|
|
stream_sample_aspect_ratio = undef;
|
|
|
|
av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
|
|
frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
|
|
if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
|
|
frame_sample_aspect_ratio = undef;
|
|
|
|
if (stream_sample_aspect_ratio.num)
|
|
return stream_sample_aspect_ratio;
|
|
else
|
|
return frame_sample_aspect_ratio;
|
|
}
|
|
|
|
AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
|
|
{
|
|
AVRational fr = st->r_frame_rate;
|
|
AVRational codec_fr = st->internal->avctx->framerate;
|
|
AVRational avg_fr = st->avg_frame_rate;
|
|
|
|
if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
|
|
av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
|
|
fr = avg_fr;
|
|
}
|
|
|
|
|
|
if (st->internal->avctx->ticks_per_frame > 1) {
|
|
if ( codec_fr.num > 0 && codec_fr.den > 0 &&
|
|
(fr.num == 0 || av_q2d(codec_fr) < av_q2d(fr)*0.7 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1))
|
|
fr = codec_fr;
|
|
}
|
|
|
|
return fr;
|
|
}
|
|
|
|
/**
|
|
* Matches a stream specifier (but ignores requested index).
|
|
*
|
|
* @param indexptr set to point to the requested stream index if there is one
|
|
*
|
|
* @return <0 on error
|
|
* 0 if st is NOT a matching stream
|
|
* >0 if st is a matching stream
|
|
*/
|
|
static int match_stream_specifier(AVFormatContext *s, AVStream *st,
|
|
const char *spec, const char **indexptr, AVProgram **p)
|
|
{
|
|
int match = 1; /* Stores if the specifier matches so far. */
|
|
while (*spec) {
|
|
if (*spec <= '9' && *spec >= '0') { /* opt:index */
|
|
if (indexptr)
|
|
*indexptr = spec;
|
|
return match;
|
|
} else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
|
|
*spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
|
|
enum AVMediaType type;
|
|
int nopic = 0;
|
|
|
|
switch (*spec++) {
|
|
case 'v': type = AVMEDIA_TYPE_VIDEO; break;
|
|
case 'a': type = AVMEDIA_TYPE_AUDIO; break;
|
|
case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
|
|
case 'd': type = AVMEDIA_TYPE_DATA; break;
|
|
case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
|
|
case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
|
|
default: av_assert0(0);
|
|
}
|
|
if (*spec && *spec++ != ':') /* If we are not at the end, then another specifier must follow. */
|
|
return AVERROR(EINVAL);
|
|
|
|
#if FF_API_LAVF_AVCTX
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
if (type != st->codecpar->codec_type
|
|
&& (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
|
|
match = 0;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#else
|
|
if (type != st->codecpar->codec_type)
|
|
match = 0;
|
|
#endif
|
|
if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
|
|
match = 0;
|
|
} else if (*spec == 'p' && *(spec + 1) == ':') {
|
|
int prog_id, i, j;
|
|
int found = 0;
|
|
char *endptr;
|
|
spec += 2;
|
|
prog_id = strtol(spec, &endptr, 0);
|
|
/* Disallow empty id and make sure that if we are not at the end, then another specifier must follow. */
|
|
if (spec == endptr || (*endptr && *endptr++ != ':'))
|
|
return AVERROR(EINVAL);
|
|
spec = endptr;
|
|
if (match) {
|
|
for (i = 0; i < s->nb_programs; i++) {
|
|
if (s->programs[i]->id != prog_id)
|
|
continue;
|
|
|
|
for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
|
|
if (st->index == s->programs[i]->stream_index[j]) {
|
|
found = 1;
|
|
if (p)
|
|
*p = s->programs[i];
|
|
i = s->nb_programs;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (!found)
|
|
match = 0;
|
|
} else if (*spec == '#' ||
|
|
(*spec == 'i' && *(spec + 1) == ':')) {
|
|
int stream_id;
|
|
char *endptr;
|
|
spec += 1 + (*spec == 'i');
|
|
stream_id = strtol(spec, &endptr, 0);
|
|
if (spec == endptr || *endptr) /* Disallow empty id and make sure we are at the end. */
|
|
return AVERROR(EINVAL);
|
|
return match && (stream_id == st->id);
|
|
} else if (*spec == 'm' && *(spec + 1) == ':') {
|
|
AVDictionaryEntry *tag;
|
|
char *key, *val;
|
|
int ret;
|
|
|
|
if (match) {
|
|
spec += 2;
|
|
val = strchr(spec, ':');
|
|
|
|
key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
|
|
if (!key)
|
|
return AVERROR(ENOMEM);
|
|
|
|
tag = av_dict_get(st->metadata, key, NULL, 0);
|
|
if (tag) {
|
|
if (!val || !strcmp(tag->value, val + 1))
|
|
ret = 1;
|
|
else
|
|
ret = 0;
|
|
} else
|
|
ret = 0;
|
|
|
|
av_freep(&key);
|
|
}
|
|
return match && ret;
|
|
} else if (*spec == 'u' && *(spec + 1) == '\0') {
|
|
AVCodecParameters *par = st->codecpar;
|
|
#if FF_API_LAVF_AVCTX
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
AVCodecContext *codec = st->codec;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
int val;
|
|
switch (par->codec_type) {
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
val = par->sample_rate && par->channels;
|
|
#if FF_API_LAVF_AVCTX
|
|
val = val || (codec->sample_rate && codec->channels);
|
|
#endif
|
|
if (par->format == AV_SAMPLE_FMT_NONE
|
|
#if FF_API_LAVF_AVCTX
|
|
&& codec->sample_fmt == AV_SAMPLE_FMT_NONE
|
|
#endif
|
|
)
|
|
return 0;
|
|
break;
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
val = par->width && par->height;
|
|
#if FF_API_LAVF_AVCTX
|
|
val = val || (codec->width && codec->height);
|
|
#endif
|
|
if (par->format == AV_PIX_FMT_NONE
|
|
#if FF_API_LAVF_AVCTX
|
|
&& codec->pix_fmt == AV_PIX_FMT_NONE
|
|
#endif
|
|
)
|
|
return 0;
|
|
break;
|
|
case AVMEDIA_TYPE_UNKNOWN:
|
|
val = 0;
|
|
break;
|
|
default:
|
|
val = 1;
|
|
break;
|
|
}
|
|
#if FF_API_LAVF_AVCTX
|
|
return match && ((par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0);
|
|
#else
|
|
return match && (par->codec_id != AV_CODEC_ID_NONE && val != 0);
|
|
#endif
|
|
} else {
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
|
|
return match;
|
|
}
|
|
|
|
|
|
int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
|
|
const char *spec)
|
|
{
|
|
int ret, index;
|
|
char *endptr;
|
|
const char *indexptr = NULL;
|
|
AVProgram *p = NULL;
|
|
int nb_streams;
|
|
|
|
ret = match_stream_specifier(s, st, spec, &indexptr, &p);
|
|
if (ret < 0)
|
|
goto error;
|
|
|
|
if (!indexptr)
|
|
return ret;
|
|
|
|
index = strtol(indexptr, &endptr, 0);
|
|
if (*endptr) { /* We can't have anything after the requested index. */
|
|
ret = AVERROR(EINVAL);
|
|
goto error;
|
|
}
|
|
|
|
/* This is not really needed but saves us a loop for simple stream index specifiers. */
|
|
if (spec == indexptr)
|
|
return (index == st->index);
|
|
|
|
/* If we requested a matching stream index, we have to ensure st is that. */
|
|
nb_streams = p ? p->nb_stream_indexes : s->nb_streams;
|
|
for (int i = 0; i < nb_streams && index >= 0; i++) {
|
|
AVStream *candidate = p ? s->streams[p->stream_index[i]] : s->streams[i];
|
|
ret = match_stream_specifier(s, candidate, spec, NULL, NULL);
|
|
if (ret < 0)
|
|
goto error;
|
|
if (ret > 0 && index-- == 0 && st == candidate)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
|
|
error:
|
|
if (ret == AVERROR(EINVAL))
|
|
av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
|
|
return ret;
|
|
}
|
|
|
|
int ff_generate_avci_extradata(AVStream *st)
|
|
{
|
|
static const uint8_t avci100_1080p_extradata[] = {
|
|
// SPS
|
|
0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
|
|
0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
|
|
0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
|
|
0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
|
|
0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
|
|
0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
|
|
0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
|
|
0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
|
|
0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// PPS
|
|
0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
|
|
0xd0
|
|
};
|
|
static const uint8_t avci100_1080i_extradata[] = {
|
|
// SPS
|
|
0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
|
|
0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
|
|
0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
|
|
0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
|
|
0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
|
|
0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
|
|
0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
|
|
0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
|
|
0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
|
|
0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
|
|
0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
|
|
// PPS
|
|
0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
|
|
0xd0
|
|
};
|
|
static const uint8_t avci50_1080p_extradata[] = {
|
|
// SPS
|
|
0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
|
|
0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
|
|
0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
|
|
0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
|
|
0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
|
|
0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
|
|
0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
|
|
0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
|
|
0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
|
|
// PPS
|
|
0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
|
|
0x11
|
|
};
|
|
static const uint8_t avci50_1080i_extradata[] = {
|
|
// SPS
|
|
0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
|
|
0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
|
|
0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
|
|
0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
|
|
0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
|
|
0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
|
|
0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
|
|
0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
|
|
0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
|
|
0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
|
|
0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
|
|
// PPS
|
|
0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
|
|
0x11
|
|
};
|
|
static const uint8_t avci100_720p_extradata[] = {
|
|
// SPS
|
|
0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
|
|
0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
|
|
0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
|
|
0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
|
|
0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
|
|
0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
|
|
0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
|
|
0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
|
|
0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
|
|
0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// PPS
|
|
0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
|
|
0x11
|
|
};
|
|
static const uint8_t avci50_720p_extradata[] = {
|
|
// SPS
|
|
0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
|
|
0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
|
|
0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
|
|
0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
|
|
0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
|
|
0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
|
|
0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
|
|
0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
|
|
0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// PPS
|
|
0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
|
|
0x11
|
|
};
|
|
|
|
const uint8_t *data = NULL;
|
|
int ret, size = 0;
|
|
|
|
if (st->codecpar->width == 1920) {
|
|
if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
|
|
data = avci100_1080p_extradata;
|
|
size = sizeof(avci100_1080p_extradata);
|
|
} else {
|
|
data = avci100_1080i_extradata;
|
|
size = sizeof(avci100_1080i_extradata);
|
|
}
|
|
} else if (st->codecpar->width == 1440) {
|
|
if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
|
|
data = avci50_1080p_extradata;
|
|
size = sizeof(avci50_1080p_extradata);
|
|
} else {
|
|
data = avci50_1080i_extradata;
|
|
size = sizeof(avci50_1080i_extradata);
|
|
}
|
|
} else if (st->codecpar->width == 1280) {
|
|
data = avci100_720p_extradata;
|
|
size = sizeof(avci100_720p_extradata);
|
|
} else if (st->codecpar->width == 960) {
|
|
data = avci50_720p_extradata;
|
|
size = sizeof(avci50_720p_extradata);
|
|
}
|
|
|
|
if (!size)
|
|
return 0;
|
|
|
|
if ((ret = ff_alloc_extradata(st->codecpar, size)) < 0)
|
|
return ret;
|
|
memcpy(st->codecpar->extradata, data, size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
uint8_t *av_stream_get_side_data(const AVStream *st,
|
|
enum AVPacketSideDataType type, int *size)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < st->nb_side_data; i++) {
|
|
if (st->side_data[i].type == type) {
|
|
if (size)
|
|
*size = st->side_data[i].size;
|
|
return st->side_data[i].data;
|
|
}
|
|
}
|
|
if (size)
|
|
*size = 0;
|
|
return NULL;
|
|
}
|
|
|
|
int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
|
|
uint8_t *data, size_t size)
|
|
{
|
|
AVPacketSideData *sd, *tmp;
|
|
int i;
|
|
|
|
for (i = 0; i < st->nb_side_data; i++) {
|
|
sd = &st->side_data[i];
|
|
|
|
if (sd->type == type) {
|
|
av_freep(&sd->data);
|
|
sd->data = data;
|
|
sd->size = size;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
|
|
return AVERROR(ERANGE);
|
|
|
|
tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
|
|
if (!tmp) {
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
st->side_data = tmp;
|
|
st->nb_side_data++;
|
|
|
|
sd = &st->side_data[st->nb_side_data - 1];
|
|
sd->type = type;
|
|
sd->data = data;
|
|
sd->size = size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
|
|
int size)
|
|
{
|
|
int ret;
|
|
uint8_t *data = av_malloc(size);
|
|
|
|
if (!data)
|
|
return NULL;
|
|
|
|
ret = av_stream_add_side_data(st, type, data, size);
|
|
if (ret < 0) {
|
|
av_freep(&data);
|
|
return NULL;
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
|
|
{
|
|
int ret;
|
|
const AVBitStreamFilter *bsf;
|
|
AVBSFContext *bsfc;
|
|
|
|
av_assert0(!st->internal->bsfc);
|
|
|
|
if (!(bsf = av_bsf_get_by_name(name))) {
|
|
av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
|
|
return AVERROR_BSF_NOT_FOUND;
|
|
}
|
|
|
|
if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
|
|
return ret;
|
|
|
|
bsfc->time_base_in = st->time_base;
|
|
if ((ret = avcodec_parameters_copy(bsfc->par_in, st->codecpar)) < 0) {
|
|
av_bsf_free(&bsfc);
|
|
return ret;
|
|
}
|
|
|
|
if (args && bsfc->filter->priv_class) {
|
|
const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
|
|
const char * shorthand[2] = {NULL};
|
|
|
|
if (opt)
|
|
shorthand[0] = opt->name;
|
|
|
|
if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
|
|
av_bsf_free(&bsfc);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if ((ret = av_bsf_init(bsfc)) < 0) {
|
|
av_bsf_free(&bsfc);
|
|
return ret;
|
|
}
|
|
|
|
st->internal->bsfc = bsfc;
|
|
|
|
av_log(NULL, AV_LOG_VERBOSE,
|
|
"Automatically inserted bitstream filter '%s'; args='%s'\n",
|
|
name, args ? args : "");
|
|
return 1;
|
|
}
|
|
|
|
#if FF_API_OLD_BSF
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
|
|
AVBitStreamFilterContext *bsfc)
|
|
{
|
|
int ret = 0;
|
|
while (bsfc) {
|
|
AVPacket new_pkt = *pkt;
|
|
int a = av_bitstream_filter_filter(bsfc, codec, NULL,
|
|
&new_pkt.data, &new_pkt.size,
|
|
pkt->data, pkt->size,
|
|
pkt->flags & AV_PKT_FLAG_KEY);
|
|
if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
|
|
av_packet_unref(pkt);
|
|
memset(pkt, 0, sizeof(*pkt));
|
|
return 0;
|
|
}
|
|
if(a == 0 && new_pkt.data != pkt->data) {
|
|
uint8_t *t = av_malloc(new_pkt.size + AV_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
|
|
if (t) {
|
|
memcpy(t, new_pkt.data, new_pkt.size);
|
|
memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
|
|
new_pkt.data = t;
|
|
new_pkt.buf = NULL;
|
|
a = 1;
|
|
} else {
|
|
a = AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
if (a > 0) {
|
|
new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
|
|
av_buffer_default_free, NULL, 0);
|
|
if (new_pkt.buf) {
|
|
pkt->side_data = NULL;
|
|
pkt->side_data_elems = 0;
|
|
av_packet_unref(pkt);
|
|
} else {
|
|
av_freep(&new_pkt.data);
|
|
a = AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
if (a < 0) {
|
|
av_log(codec, AV_LOG_ERROR,
|
|
"Failed to open bitstream filter %s for stream %d with codec %s",
|
|
bsfc->filter->name, pkt->stream_index,
|
|
codec->codec ? codec->codec->name : "copy");
|
|
ret = a;
|
|
break;
|
|
}
|
|
*pkt = new_pkt;
|
|
|
|
bsfc = bsfc->next;
|
|
}
|
|
return ret;
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
|
|
int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
|
|
{
|
|
if (!s->oformat)
|
|
return AVERROR(EINVAL);
|
|
|
|
if (!(s->oformat->flags & AVFMT_NOFILE))
|
|
return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
|
|
return 0;
|
|
}
|
|
|
|
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
|
|
{
|
|
if (*pb)
|
|
s->io_close(s, *pb);
|
|
*pb = NULL;
|
|
}
|
|
|
|
int ff_is_http_proto(char *filename) {
|
|
const char *proto = avio_find_protocol_name(filename);
|
|
return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
|
|
}
|
|
|
|
int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
|
|
{
|
|
AVDictionaryEntry *entry;
|
|
int64_t parsed_timestamp;
|
|
int ret;
|
|
if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
|
|
if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
|
|
*timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
|
|
return 1;
|
|
} else {
|
|
av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
|
|
return ret;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ff_standardize_creation_time(AVFormatContext *s)
|
|
{
|
|
int64_t timestamp;
|
|
int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
|
|
if (ret == 1)
|
|
return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
|
|
return ret;
|
|
}
|
|
|
|
int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
|
|
{
|
|
uint8_t *side_data;
|
|
int size;
|
|
|
|
side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
|
|
if (side_data) {
|
|
if (size != AVPALETTE_SIZE) {
|
|
av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
memcpy(palette, side_data, AVPALETTE_SIZE);
|
|
return 1;
|
|
}
|
|
|
|
if (ret == CONTAINS_PAL) {
|
|
int i;
|
|
for (i = 0; i < AVPALETTE_COUNT; i++)
|
|
palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
|
|
{
|
|
int ret;
|
|
char *str;
|
|
|
|
ret = av_bprint_finalize(buf, &str);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (!av_bprint_is_complete(buf)) {
|
|
av_free(str);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
par->extradata = str;
|
|
/* Note: the string is NUL terminated (so extradata can be read as a
|
|
* string), but the ending character is not accounted in the size (in
|
|
* binary formats you are likely not supposed to mux that character). When
|
|
* extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
|
|
* zeros. */
|
|
par->extradata_size = buf->len;
|
|
return 0;
|
|
}
|
|
|
|
int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
|
|
AVStream *ost, const AVStream *ist,
|
|
enum AVTimebaseSource copy_tb)
|
|
{
|
|
//TODO: use [io]st->internal->avctx
|
|
const AVCodecContext *dec_ctx = ist->codec;
|
|
AVCodecContext *enc_ctx = ost->codec;
|
|
|
|
enc_ctx->time_base = ist->time_base;
|
|
/*
|
|
* Avi is a special case here because it supports variable fps but
|
|
* having the fps and timebase differe significantly adds quite some
|
|
* overhead
|
|
*/
|
|
if (!strcmp(ofmt->name, "avi")) {
|
|
#if FF_API_R_FRAME_RATE
|
|
if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
|
|
&& av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
|
|
&& 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
|
|
&& 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
|
|
&& av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
|
|
|| copy_tb == AVFMT_TBCF_R_FRAMERATE) {
|
|
enc_ctx->time_base.num = ist->r_frame_rate.den;
|
|
enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
|
|
enc_ctx->ticks_per_frame = 2;
|
|
} else
|
|
#endif
|
|
if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
|
|
&& av_q2d(ist->time_base) < 1.0/500
|
|
|| copy_tb == AVFMT_TBCF_DECODER) {
|
|
enc_ctx->time_base = dec_ctx->time_base;
|
|
enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
|
|
enc_ctx->time_base.den *= 2;
|
|
enc_ctx->ticks_per_frame = 2;
|
|
}
|
|
} else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
|
|
&& !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
|
|
if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
|
|
&& av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
|
|
&& av_q2d(ist->time_base) < 1.0/500
|
|
|| copy_tb == AVFMT_TBCF_DECODER) {
|
|
enc_ctx->time_base = dec_ctx->time_base;
|
|
enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
|
|
}
|
|
}
|
|
|
|
if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
|
|
&& dec_ctx->time_base.num < dec_ctx->time_base.den
|
|
&& dec_ctx->time_base.num > 0
|
|
&& 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
|
|
enc_ctx->time_base = dec_ctx->time_base;
|
|
}
|
|
|
|
if (ost->avg_frame_rate.num)
|
|
enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
|
|
|
|
av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
|
|
enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVRational av_stream_get_codec_timebase(const AVStream *st)
|
|
{
|
|
// See avformat_transfer_internal_stream_timing_info() TODO.
|
|
#if FF_API_LAVF_AVCTX
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
return st->codec->time_base;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#else
|
|
return st->internal->avctx->time_base;
|
|
#endif
|
|
}
|
|
|
|
void ff_format_set_url(AVFormatContext *s, char *url)
|
|
{
|
|
av_assert0(url);
|
|
av_freep(&s->url);
|
|
s->url = url;
|
|
#if FF_API_FORMAT_FILENAME
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
av_strlcpy(s->filename, url, sizeof(s->filename));
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
}
|