d4db7c334b
I have no idea why I added a separate header, I think there is no good reason for it. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
4227 lines
145 KiB
C
4227 lines
145 KiB
C
/*
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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 "avformat.h"
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#include "avio_internal.h"
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#include "internal.h"
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#include "libavcodec/internal.h"
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#include "libavcodec/raw.h"
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#include "libavcodec/bytestream.h"
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#include "libavutil/avassert.h"
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#include "libavutil/opt.h"
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#include "libavutil/dict.h"
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#include "libavutil/internal.h"
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#include "libavutil/pixdesc.h"
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#include "metadata.h"
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#include "id3v2.h"
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#include "libavutil/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/time.h"
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#include "libavutil/timestamp.h"
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#include "riff.h"
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#include "audiointerleave.h"
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#include "url.h"
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#include <stdarg.h>
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#if CONFIG_NETWORK
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#include "network.h"
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#endif
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#undef NDEBUG
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#include <assert.h>
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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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#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(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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MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
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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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/*
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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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*/
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static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
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{
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int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
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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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/*
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* When the caller requests a lot of data, limit it to the amount left
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* in file or SANE_CHUNK_SIZE when it is not known
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*/
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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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pkt->pos = orig_pos;
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if (!pkt->size)
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av_free_packet(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 && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
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}
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AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
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{
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AVProbeData lpd = *pd;
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AVInputFormat *fmt1 = NULL, *fmt;
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int score, nodat = 0, score_max=0;
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const static uint8_t zerobuffer[AVPROBE_PADDING_SIZE];
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if (!lpd.buf)
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lpd.buf = zerobuffer;
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if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
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int id3len = ff_id3v2_tag_len(lpd.buf);
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if (lpd.buf_size > id3len + 16) {
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lpd.buf += id3len;
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lpd.buf_size -= id3len;
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}else
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nodat = 1;
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}
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fmt = NULL;
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while ((fmt1 = av_iformat_next(fmt1))) {
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if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
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continue;
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score = 0;
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if (fmt1->read_probe) {
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score = fmt1->read_probe(&lpd);
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if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
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score = FFMAX(score, nodat ? AVPROBE_SCORE_EXTENSION / 2 - 1 : 1);
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} else if (fmt1->extensions) {
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if (av_match_ext(lpd.filename, fmt1->extensions)) {
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score = AVPROBE_SCORE_EXTENSION;
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}
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}
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if (score > score_max) {
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score_max = score;
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fmt = fmt1;
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}else if (score == score_max)
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fmt = NULL;
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}
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if(nodat)
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score_max = FFMIN(AVPROBE_SCORE_EXTENSION / 2 - 1, score_max);
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*score_ret= score_max;
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return fmt;
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}
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AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
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{
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int score_ret;
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AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
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if(score_ret > *score_max){
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*score_max= score_ret;
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return fmt;
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}else
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return NULL;
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}
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AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
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int score=0;
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return av_probe_input_format2(pd, is_opened, &score);
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}
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static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
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{
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static const struct {
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const char *name; enum AVCodecID id; 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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{ "dts" , AV_CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
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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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{ "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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{ "mp3" , AV_CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
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{ "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
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{ 0 }
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};
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int score;
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AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
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if (fmt && st->request_probe <= score) {
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int i;
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av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
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pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, 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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st->codec->codec_id = fmt_id_type[i].id;
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st->codec->codec_type = fmt_id_type[i].type;
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break;
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}
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}
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}
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return score;
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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->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->data_offset)
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ic->data_offset = avio_tell(ic->pb);
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return 0;
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}
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/** size of probe buffer, for guessing file type from file contents */
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#define PROBE_BUF_MIN 2048
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#define PROBE_BUF_MAX (1<<20)
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int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
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const char *filename, void *logctx,
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unsigned int offset, unsigned int max_probe_size)
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{
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AVProbeData pd = { filename ? filename : "", NULL, -offset };
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unsigned char *buf = NULL;
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uint8_t *mime_type;
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int ret = 0, probe_size, buf_offset = 0;
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if (!max_probe_size) {
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max_probe_size = PROBE_BUF_MAX;
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} else if (max_probe_size > PROBE_BUF_MAX) {
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max_probe_size = PROBE_BUF_MAX;
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} else if (max_probe_size < PROBE_BUF_MIN) {
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av_log(logctx, AV_LOG_ERROR,
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"Specified probe size value %u cannot be < %u\n", max_probe_size, PROBE_BUF_MIN);
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return AVERROR(EINVAL);
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}
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if (offset >= max_probe_size) {
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return AVERROR(EINVAL);
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}
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if (!*fmt && pb->av_class && av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type) >= 0 && mime_type) {
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if (!av_strcasecmp(mime_type, "audio/aacp")) {
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*fmt = av_find_input_format("aac");
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}
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av_freep(&mime_type);
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}
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for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
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probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
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int score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
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void *buftmp;
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if (probe_size < offset) {
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continue;
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}
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/* read probe data */
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buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
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if(!buftmp){
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av_free(buf);
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return AVERROR(ENOMEM);
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}
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buf=buftmp;
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if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
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/* fail if error was not end of file, otherwise, lower score */
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if (ret != AVERROR_EOF) {
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av_free(buf);
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return ret;
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}
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score = 0;
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ret = 0; /* error was end of file, nothing read */
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}
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pd.buf_size = buf_offset += ret;
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pd.buf = &buf[offset];
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memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
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/* guess file format */
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*fmt = av_probe_input_format2(&pd, 1, &score);
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if(*fmt){
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if(score <= AVPROBE_SCORE_RETRY){ //this can only be true in the last iteration
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av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
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}else
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av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
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}
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}
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if (!*fmt) {
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av_free(buf);
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return AVERROR_INVALIDDATA;
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}
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|
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/* rewind. reuse probe buffer to avoid seeking */
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ret = ffio_rewind_with_probe_data(pb, &buf, pd.buf_size);
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return ret;
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}
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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, 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_buffer(s->pb, &s->iformat, filename, s, 0, s->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 0;
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|
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if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
|
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&s->interrupt_callback, options)) < 0)
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return ret;
|
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if (s->iformat)
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return 0;
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return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
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}
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|
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static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
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AVPacketList **plast_pktl){
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AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
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if (!pktl)
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return NULL;
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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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|
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/* add the packet in the buffered packet list */
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*plast_pktl = pktl;
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pktl->pkt= *pkt;
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return &pktl->pkt;
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}
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int avformat_queue_attached_pictures(AVFormatContext *s)
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{
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int i;
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for (i = 0; i < s->nb_streams; i++)
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if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
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s->streams[i]->discard < AVDISCARD_ALL) {
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AVPacket copy = s->streams[i]->attached_pic;
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copy.buf = av_buffer_ref(copy.buf);
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if (!copy.buf)
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return AVERROR(ENOMEM);
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add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
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}
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return 0;
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}
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|
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int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
|
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{
|
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AVFormatContext *s = *ps;
|
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int ret = 0;
|
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AVDictionary *tmp = NULL;
|
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ID3v2ExtraMeta *id3v2_extra_meta = NULL;
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if (!s && !(s = avformat_alloc_context()))
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return AVERROR(ENOMEM);
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if (!s->av_class){
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av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
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return AVERROR(EINVAL);
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}
|
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if (fmt)
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s->iformat = fmt;
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|
|
if (options)
|
|
av_dict_copy(&tmp, *options, 0);
|
|
|
|
if ((ret = av_opt_set_dict(s, &tmp)) < 0)
|
|
goto fail;
|
|
|
|
if ((ret = init_input(s, filename, &tmp)) < 0)
|
|
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;
|
|
av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
|
|
|
|
/* 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(s, 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 (id3v2_extra_meta) {
|
|
if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
|
|
!strcmp(s->iformat->name, "tta")) {
|
|
if((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
|
|
goto fail;
|
|
} 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 fail;
|
|
|
|
if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
|
|
s->data_offset = avio_tell(s->pb);
|
|
|
|
s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
|
|
|
|
if (options) {
|
|
av_dict_free(options);
|
|
*options = tmp;
|
|
}
|
|
*ps = s;
|
|
return 0;
|
|
|
|
fail:
|
|
ff_id3v2_free_extra_meta(&id3v2_extra_meta);
|
|
av_dict_free(&tmp);
|
|
if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
|
|
avio_close(s->pb);
|
|
avformat_free_context(s);
|
|
*ps = NULL;
|
|
return ret;
|
|
}
|
|
|
|
/*******************************************************/
|
|
|
|
static void force_codec_ids(AVFormatContext *s, AVStream *st)
|
|
{
|
|
switch(st->codec->codec_type){
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
|
|
break;
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
|
|
break;
|
|
case AVMEDIA_TYPE_SUBTITLE:
|
|
if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void 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)
|
|
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->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->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_RETRY)
|
|
|| end){
|
|
pd->buf_size=0;
|
|
av_freep(&pd->buf);
|
|
st->request_probe= -1;
|
|
if(st->codec->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);
|
|
}
|
|
}
|
|
}
|
|
|
|
int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
int ret, i;
|
|
AVStream *st;
|
|
|
|
for(;;){
|
|
AVPacketList *pktl = s->raw_packet_buffer;
|
|
|
|
if (pktl) {
|
|
*pkt = pktl->pkt;
|
|
st = s->streams[pkt->stream_index];
|
|
if (s->raw_packet_buffer_remaining_size <= 0)
|
|
probe_codec(s, st, NULL);
|
|
if(st->request_probe <= 0){
|
|
s->raw_packet_buffer = pktl->next;
|
|
s->raw_packet_buffer_remaining_size += pkt->size;
|
|
av_free(pktl);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
pkt->data = NULL;
|
|
pkt->size = 0;
|
|
av_init_packet(pkt);
|
|
ret= s->iformat->read_packet(s, pkt);
|
|
if (ret < 0) {
|
|
if (!pktl || ret == AVERROR(EAGAIN))
|
|
return ret;
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
st = s->streams[i];
|
|
if (st->probe_packets) {
|
|
probe_codec(s, st, NULL);
|
|
}
|
|
av_assert0(st->request_probe <= 0);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
|
|
(pkt->flags & AV_PKT_FLAG_CORRUPT)) {
|
|
av_log(s, AV_LOG_WARNING,
|
|
"Dropped corrupted packet (stream = %d)\n",
|
|
pkt->stream_index);
|
|
av_free_packet(pkt);
|
|
continue;
|
|
}
|
|
|
|
if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
|
|
av_packet_merge_side_data(pkt);
|
|
|
|
if(pkt->stream_index >= (unsigned)s->nb_streams){
|
|
av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
|
|
continue;
|
|
}
|
|
|
|
st= s->streams[pkt->stream_index];
|
|
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;
|
|
|
|
add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
|
|
s->raw_packet_buffer_remaining_size -= pkt->size;
|
|
|
|
probe_codec(s, st, pkt);
|
|
}
|
|
}
|
|
|
|
#if FF_API_READ_PACKET
|
|
int av_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
return ff_read_packet(s, pkt);
|
|
}
|
|
#endif
|
|
|
|
|
|
/**********************************************************/
|
|
|
|
static int determinable_frame_size(AVCodecContext *avctx)
|
|
{
|
|
if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
|
|
avctx->codec_id == AV_CODEC_ID_MP1 ||
|
|
avctx->codec_id == AV_CODEC_ID_MP2 ||
|
|
avctx->codec_id == AV_CODEC_ID_MP3/* ||
|
|
avctx->codec_id == AV_CODEC_ID_CELT*/)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Get the number of samples of an audio frame. Return -1 on error.
|
|
*/
|
|
int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
|
|
{
|
|
int frame_size;
|
|
|
|
/* give frame_size priority if demuxing */
|
|
if (!mux && enc->frame_size > 1)
|
|
return enc->frame_size;
|
|
|
|
if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
|
|
return frame_size;
|
|
|
|
/* Fall back on using frame_size if muxing. */
|
|
if (enc->frame_size > 1)
|
|
return enc->frame_size;
|
|
|
|
//For WMA we currently have no other means to calculate duration thus we
|
|
//do it here by assuming CBR, which is true for all known cases.
|
|
if(!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
|
|
if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
|
|
return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return the frame duration in seconds. Return 0 if not available.
|
|
*/
|
|
void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
|
|
AVCodecParserContext *pc, AVPacket *pkt)
|
|
{
|
|
int frame_size;
|
|
|
|
*pnum = 0;
|
|
*pden = 0;
|
|
switch(st->codec->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
if (st->r_frame_rate.num && !pc) {
|
|
*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(st->codec->time_base.num*1000LL > st->codec->time_base.den){
|
|
*pnum = st->codec->time_base.num;
|
|
*pden = st->codec->time_base.den;
|
|
if (pc && pc->repeat_pict) {
|
|
if (*pnum > INT_MAX / (1 + pc->repeat_pict))
|
|
*pden /= 1 + pc->repeat_pict;
|
|
else
|
|
*pnum *= 1 + pc->repeat_pict;
|
|
}
|
|
//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->codec->ticks_per_frame>1 && !pc){
|
|
*pnum = *pden = 0;
|
|
}
|
|
}
|
|
break;
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0);
|
|
if (frame_size <= 0 || st->codec->sample_rate <= 0)
|
|
break;
|
|
*pnum = frame_size;
|
|
*pden = st->codec->sample_rate;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int is_intra_only(AVCodecContext *enc){
|
|
const AVCodecDescriptor *desc;
|
|
|
|
if(enc->codec_type != AVMEDIA_TYPE_VIDEO)
|
|
return 1;
|
|
|
|
desc = av_codec_get_codec_descriptor(enc);
|
|
if (!desc) {
|
|
desc = avcodec_descriptor_get(enc->codec_id);
|
|
av_codec_set_codec_descriptor(enc, desc);
|
|
}
|
|
if (desc)
|
|
return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
|
|
return 0;
|
|
}
|
|
|
|
static int has_decode_delay_been_guessed(AVStream *st)
|
|
{
|
|
if(st->codec->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->codec->has_b_frames &&
|
|
avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
|
|
return 1;
|
|
#endif
|
|
if(st->codec->has_b_frames<3)
|
|
return st->nb_decoded_frames >= 7;
|
|
else if(st->codec->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->parse_queue_end)
|
|
return s->packet_buffer;
|
|
return NULL;
|
|
}
|
|
|
|
static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index)
|
|
{
|
|
if (s->correct_ts_overflow && st->pts_wrap_bits < 63 &&
|
|
st->pts_wrap_reference == AV_NOPTS_VALUE && st->first_dts != AV_NOPTS_VALUE) {
|
|
int i;
|
|
|
|
// reference time stamp should be 60 s before first time stamp
|
|
int64_t pts_wrap_reference = st->first_dts - 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
|
|
int pts_wrap_behavior = (st->first_dts < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) ||
|
|
(st->first_dts < (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;
|
|
|
|
AVProgram *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++) {
|
|
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;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
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->parse_queue ? s->parse_queue : s->packet_buffer;
|
|
int64_t pts_buffer[MAX_REORDER_DELAY+1];
|
|
int64_t shift;
|
|
int i, delay;
|
|
|
|
if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
|
|
return;
|
|
|
|
delay = st->codec->has_b_frames;
|
|
st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
|
|
st->cur_dts= dts;
|
|
shift = st->first_dts - RELATIVE_TS_BASE;
|
|
|
|
for (i=0; i<MAX_REORDER_DELAY+1; i++)
|
|
pts_buffer[i] = AV_NOPTS_VALUE;
|
|
|
|
if (is_relative(pts))
|
|
pts += shift;
|
|
|
|
for(; pktl; pktl= get_next_pkt(s, st, pktl)){
|
|
if(pktl->pkt.stream_index != stream_index)
|
|
continue;
|
|
if(is_relative(pktl->pkt.pts))
|
|
pktl->pkt.pts += shift;
|
|
|
|
if(is_relative(pktl->pkt.dts))
|
|
pktl->pkt.dts += shift;
|
|
|
|
if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
|
|
st->start_time= pktl->pkt.pts;
|
|
|
|
if(pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
|
|
pts_buffer[0]= pktl->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]);
|
|
if(pktl->pkt.dts == AV_NOPTS_VALUE)
|
|
pktl->pkt.dts= pts_buffer[0];
|
|
}
|
|
}
|
|
|
|
if (update_wrap_reference(s, st, stream_index) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
|
|
// correct first time stamps to negative values
|
|
st->first_dts = wrap_timestamp(st, st->first_dts);
|
|
st->cur_dts = wrap_timestamp(st, st->cur_dts);
|
|
pkt->dts = wrap_timestamp(st, pkt->dts);
|
|
pkt->pts = wrap_timestamp(st, pkt->pts);
|
|
pts = wrap_timestamp(st, pts);
|
|
}
|
|
|
|
if (st->start_time == AV_NOPTS_VALUE)
|
|
st->start_time = pts;
|
|
}
|
|
|
|
static void update_initial_durations(AVFormatContext *s, AVStream *st,
|
|
int stream_index, int duration)
|
|
{
|
|
AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
|
|
int64_t cur_dts= RELATIVE_TS_BASE;
|
|
|
|
if(st->first_dts != AV_NOPTS_VALUE){
|
|
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 in the queue\n", av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts));
|
|
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->parse_queue ? s->parse_queue : s->packet_buffer;
|
|
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.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
|
|
&& !pktl->pkt.duration){
|
|
pktl->pkt.dts= cur_dts;
|
|
if(!st->codec->has_b_frames)
|
|
pktl->pkt.pts= cur_dts;
|
|
// if (st->codec->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)
|
|
{
|
|
int num, den, presentation_delayed, delay, i;
|
|
int64_t offset;
|
|
|
|
if (s->flags & AVFMT_FLAG_NOFILLIN)
|
|
return;
|
|
|
|
if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
|
|
pkt->dts= AV_NOPTS_VALUE;
|
|
|
|
if (st->codec->codec_id != AV_CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
|
|
//FIXME Set low_delay = 0 when has_b_frames = 1
|
|
st->codec->has_b_frames = 1;
|
|
|
|
/* do we have a video B-frame ? */
|
|
delay= st->codec->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 mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
|
|
// we take the conservative approach and discard both
|
|
// Note, if this is misbehaving for a 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")) // otherwise we discard correct timestamps for vc1-wmapro.ism
|
|
pkt->dts= AV_NOPTS_VALUE;
|
|
}
|
|
|
|
if (pkt->duration == 0) {
|
|
ff_compute_frame_duration(&num, &den, st, pc, 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);
|
|
}
|
|
}
|
|
if(pkt->duration != 0 && (s->packet_buffer || s->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;
|
|
}
|
|
|
|
if (pc && pc->dts_sync_point >= 0) {
|
|
// we have synchronization info from the parser
|
|
int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
|
|
if (den > 0) {
|
|
int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
|
|
if (pkt->dts != AV_NOPTS_VALUE) {
|
|
// got DTS from the stream, update reference timestamp
|
|
st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
|
|
pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
|
|
} else if (st->reference_dts != AV_NOPTS_VALUE) {
|
|
// compute DTS based on reference timestamp
|
|
pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
|
|
pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
|
|
}
|
|
if (pc->dts_sync_point > 0)
|
|
st->reference_dts = pkt->dts; // new reference
|
|
}
|
|
}
|
|
|
|
/* 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;
|
|
|
|
av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
|
|
presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
|
|
/* 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)) && st->codec->codec_id != AV_CODEC_ID_H264){
|
|
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)
|
|
st->last_IP_duration = pkt->duration;
|
|
if(pkt->dts != AV_NOPTS_VALUE)
|
|
st->cur_dts = pkt->dts + st->last_IP_duration;
|
|
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 ) {
|
|
int duration = pkt->duration;
|
|
|
|
/* 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)
|
|
st->cur_dts = pkt->pts + duration;
|
|
}
|
|
}
|
|
|
|
if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
|
|
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(pkt->dts == AV_NOPTS_VALUE)
|
|
pkt->dts= st->pts_buffer[0];
|
|
}
|
|
if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here
|
|
update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet
|
|
}
|
|
if(pkt->dts > st->cur_dts)
|
|
st->cur_dts = pkt->dts;
|
|
|
|
av_dlog(NULL, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
|
|
presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
|
|
|
|
/* update flags */
|
|
if (is_intra_only(st->codec))
|
|
pkt->flags |= AV_PKT_FLAG_KEY;
|
|
if (pc)
|
|
pkt->convergence_duration = pc->convergence_duration;
|
|
}
|
|
|
|
static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
|
|
{
|
|
while (*pkt_buf) {
|
|
AVPacketList *pktl = *pkt_buf;
|
|
*pkt_buf = pktl->next;
|
|
av_free_packet(&pktl->pkt);
|
|
av_freep(&pktl);
|
|
}
|
|
*pkt_buf_end = NULL;
|
|
}
|
|
|
|
/**
|
|
* Parse a packet, add all split parts to parse_queue
|
|
*
|
|
* @param pkt packet to parse, NULL when flushing the parser at end of stream
|
|
*/
|
|
static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
|
|
{
|
|
AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
|
|
AVStream *st = s->streams[stream_index];
|
|
uint8_t *data = pkt ? pkt->data : NULL;
|
|
int size = pkt ? pkt->size : 0;
|
|
int ret = 0, got_output = 0;
|
|
|
|
if (!pkt) {
|
|
av_init_packet(&flush_pkt);
|
|
pkt = &flush_pkt;
|
|
got_output = 1;
|
|
} else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
|
|
// preserve 0-size sync packets
|
|
compute_pkt_fields(s, st, st->parser, pkt);
|
|
}
|
|
|
|
while (size > 0 || (pkt == &flush_pkt && got_output)) {
|
|
int len;
|
|
|
|
av_init_packet(&out_pkt);
|
|
len = av_parser_parse2(st->parser, st->codec,
|
|
&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->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 = 0;
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
if (st->codec->sample_rate > 0) {
|
|
out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
|
|
(AVRational){ 1, st->codec->sample_rate },
|
|
st->time_base,
|
|
AV_ROUND_DOWN);
|
|
}
|
|
} else if (st->codec->time_base.num != 0 &&
|
|
st->codec->time_base.den != 0) {
|
|
out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
|
|
st->codec->time_base,
|
|
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;
|
|
|
|
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);
|
|
|
|
if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
|
|
out_pkt.buf = pkt->buf;
|
|
pkt->buf = NULL;
|
|
#if FF_API_DESTRUCT_PACKET
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
out_pkt.destruct = pkt->destruct;
|
|
pkt->destruct = NULL;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
}
|
|
if ((ret = av_dup_packet(&out_pkt)) < 0)
|
|
goto fail;
|
|
|
|
if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
|
|
av_free_packet(&out_pkt);
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
|
|
/* end of the stream => close and free the parser */
|
|
if (pkt == &flush_pkt) {
|
|
av_parser_close(st->parser);
|
|
st->parser = NULL;
|
|
}
|
|
|
|
fail:
|
|
av_free_packet(pkt);
|
|
return ret;
|
|
}
|
|
|
|
static int read_from_packet_buffer(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 int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
int ret = 0, i, got_packet = 0;
|
|
|
|
av_init_packet(pkt);
|
|
|
|
while (!got_packet && !s->parse_queue) {
|
|
AVStream *st;
|
|
AVPacket cur_pkt;
|
|
|
|
/* read next packet */
|
|
ret = ff_read_packet(s, &cur_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, NULL, st->index);
|
|
}
|
|
/* all remaining packets are now in parse_queue =>
|
|
* really terminate parsing */
|
|
break;
|
|
}
|
|
ret = 0;
|
|
st = s->streams[cur_pkt.stream_index];
|
|
|
|
if (cur_pkt.pts != AV_NOPTS_VALUE &&
|
|
cur_pkt.dts != AV_NOPTS_VALUE &&
|
|
cur_pkt.pts < cur_pkt.dts) {
|
|
av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
|
|
cur_pkt.stream_index,
|
|
av_ts2str(cur_pkt.pts),
|
|
av_ts2str(cur_pkt.dts),
|
|
cur_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=%d, flags=%d\n",
|
|
cur_pkt.stream_index,
|
|
av_ts2str(cur_pkt.pts),
|
|
av_ts2str(cur_pkt.dts),
|
|
cur_pkt.size,
|
|
cur_pkt.duration,
|
|
cur_pkt.flags);
|
|
|
|
if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
|
|
st->parser = av_parser_init(st->codec->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->codec->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 */
|
|
*pkt = cur_pkt;
|
|
compute_pkt_fields(s, st, NULL, pkt);
|
|
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, &cur_pkt, cur_pkt.stream_index)) < 0)
|
|
return ret;
|
|
} else {
|
|
/* free packet */
|
|
av_free_packet(&cur_pkt);
|
|
}
|
|
if (pkt->flags & AV_PKT_FLAG_KEY)
|
|
st->skip_to_keyframe = 0;
|
|
if (st->skip_to_keyframe) {
|
|
av_free_packet(&cur_pkt);
|
|
if (got_packet) {
|
|
*pkt = cur_pkt;
|
|
}
|
|
got_packet = 0;
|
|
}
|
|
}
|
|
|
|
if (!got_packet && s->parse_queue)
|
|
ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
|
|
|
|
if(s->debug & FF_FDEBUG_TS)
|
|
av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
|
|
pkt->stream_index,
|
|
av_ts2str(pkt->pts),
|
|
av_ts2str(pkt->dts),
|
|
pkt->size,
|
|
pkt->duration,
|
|
pkt->flags);
|
|
|
|
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->packet_buffer ?
|
|
read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) :
|
|
read_frame_internal(s, pkt);
|
|
if (ret < 0)
|
|
return ret;
|
|
goto return_packet;
|
|
}
|
|
|
|
for (;;) {
|
|
AVPacketList *pktl = s->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;
|
|
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, 2LL << (wrap_bits - 1)) < 0)) {
|
|
if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (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->packet_buffer;
|
|
}
|
|
|
|
/* read packet from packet buffer, if there is data */
|
|
if (!(next_pkt->pts == AV_NOPTS_VALUE &&
|
|
next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
|
|
ret = read_from_packet_buffer(&s->packet_buffer,
|
|
&s->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;
|
|
}
|
|
|
|
if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
|
|
&s->packet_buffer_end)) < 0)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
return_packet:
|
|
|
|
st = s->streams[pkt->stream_index];
|
|
if (st->skip_samples) {
|
|
uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
|
|
AV_WL32(p, st->skip_samples);
|
|
av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples);
|
|
st->skip_samples = 0;
|
|
}
|
|
|
|
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)
|
|
{
|
|
free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
|
|
free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
|
|
free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
|
|
|
|
s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
|
|
}
|
|
|
|
/*******************************************************/
|
|
/* seek support */
|
|
|
|
int av_find_default_stream_index(AVFormatContext *s)
|
|
{
|
|
int first_audio_index = -1;
|
|
int i;
|
|
AVStream *st;
|
|
|
|
if (s->nb_streams <= 0)
|
|
return -1;
|
|
for(i = 0; i < s->nb_streams; i++) {
|
|
st = s->streams[i];
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
|
|
!(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
|
|
return i;
|
|
}
|
|
if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
|
|
first_audio_index = i;
|
|
}
|
|
return first_audio_index >= 0 ? first_audio_index : 0;
|
|
}
|
|
|
|
/**
|
|
* Flush the frame reader.
|
|
*/
|
|
void ff_read_frame_flush(AVFormatContext *s)
|
|
{
|
|
AVStream *st;
|
|
int i, j;
|
|
|
|
flush_packet_queue(s);
|
|
|
|
/* for each stream, reset read state */
|
|
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;
|
|
if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
|
|
else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
|
|
st->reference_dts = AV_NOPTS_VALUE;
|
|
|
|
st->probe_packets = MAX_PROBE_PACKETS;
|
|
|
|
for(j=0; j<MAX_REORDER_DELAY+1; j++)
|
|
st->pts_buffer[j]= AV_NOPTS_VALUE;
|
|
}
|
|
}
|
|
|
|
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 (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;
|
|
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;
|
|
}
|
|
|
|
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)
|
|
{
|
|
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_dlog(s, "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;
|
|
|
|
index= av_index_search_timestamp(st, target_ts, flags | AVSEEK_FLAG_BACKWARD); //FIXME whole func must be checked for non-keyframe entries in index case, especially read_timestamp()
|
|
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_dlog(s, "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_dlog(s, "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;
|
|
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_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
|
|
|
|
if(ts_min == AV_NOPTS_VALUE){
|
|
pos_min = s->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;
|
|
}
|
|
|
|
if(ts_min > ts_max){
|
|
return -1;
|
|
}else if(ts_min == ts_max){
|
|
pos_limit= pos_min;
|
|
}
|
|
|
|
no_change=0;
|
|
while (pos_min < pos_limit) {
|
|
av_dlog(s, "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));
|
|
assert(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 failed to change min or 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;
|
|
|
|
ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
|
|
if(pos == pos_max)
|
|
no_change++;
|
|
else
|
|
no_change=0;
|
|
av_dlog(s, "%"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;
|
|
}
|
|
assert(ts != AV_NOPTS_VALUE);
|
|
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_dlog(s, "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->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->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;
|
|
av_free_packet(&pkt);
|
|
if(stream_index == pkt.stream_index && pkt.dts > timestamp){
|
|
if(pkt.flags & AV_PKT_FLAG_KEY)
|
|
break;
|
|
if(nonkey++ > 1000 && st->codec->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);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
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);
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
/*******************************************************/
|
|
|
|
/**
|
|
* 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;
|
|
int64_t duration, duration1, filesize;
|
|
int i;
|
|
AVStream *st;
|
|
AVProgram *p;
|
|
|
|
start_time = INT64_MAX;
|
|
start_time_text = INT64_MAX;
|
|
end_time = INT64_MIN;
|
|
duration = INT64_MIN;
|
|
for(i = 0;i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
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 (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
|
|
if (start_time1 < start_time_text)
|
|
start_time_text = start_time1;
|
|
} else
|
|
start_time = FFMIN(start_time, start_time1);
|
|
end_time1 = AV_NOPTS_VALUE;
|
|
if (st->duration != AV_NOPTS_VALUE) {
|
|
end_time1 = start_time1
|
|
+ av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
|
|
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);
|
|
duration = FFMAX(duration, duration1);
|
|
}
|
|
}
|
|
if (start_time == INT64_MAX || (start_time > start_time_text && start_time - 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 (start_time != INT64_MAX) {
|
|
ic->start_time = start_time;
|
|
if (end_time != INT64_MIN) {
|
|
if (ic->nb_programs) {
|
|
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)
|
|
duration = FFMAX(duration, p->end_time - p->start_time);
|
|
}
|
|
} else
|
|
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 != AV_NOPTS_VALUE) {
|
|
/* compute the bitrate */
|
|
double bitrate = (double)filesize * 8.0 * AV_TIME_BASE /
|
|
(double)ic->duration;
|
|
if (bitrate >= 0 && bitrate <= INT_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 bit_rate, i, show_warning = 0;
|
|
AVStream *st;
|
|
|
|
/* if bit_rate is already set, we believe it */
|
|
if (ic->bit_rate <= 0) {
|
|
bit_rate = 0;
|
|
for(i=0;i<ic->nb_streams;i++) {
|
|
st = ic->streams[i];
|
|
if (st->codec->bit_rate > 0)
|
|
bit_rate += st->codec->bit_rate;
|
|
}
|
|
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 > 0) {
|
|
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(8*filesize, 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 4
|
|
|
|
/* 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 read_size, i, ret;
|
|
int64_t end_time;
|
|
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)
|
|
av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
|
|
|
|
if (st->parser) {
|
|
av_parser_close(st->parser);
|
|
st->parser= NULL;
|
|
}
|
|
}
|
|
|
|
/* estimate the end time (duration) */
|
|
/* XXX: may need to support wrapping */
|
|
filesize = ic->pb ? avio_size(ic->pb) : 0;
|
|
end_time = AV_NOPTS_VALUE;
|
|
do{
|
|
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)) {
|
|
duration = end_time = pkt->pts;
|
|
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_free_packet(pkt);
|
|
}
|
|
}while( end_time==AV_NOPTS_VALUE
|
|
&& filesize > (DURATION_MAX_READ_SIZE<<retry)
|
|
&& ++retry <= DURATION_MAX_RETRY);
|
|
|
|
fill_all_stream_timings(ic);
|
|
|
|
avio_seek(ic->pb, old_offset, SEEK_SET);
|
|
for (i=0; i<ic->nb_streams; i++) {
|
|
st= ic->streams[i];
|
|
st->cur_dts= st->first_dts;
|
|
st->last_IP_pts = AV_NOPTS_VALUE;
|
|
st->reference_dts = AV_NOPTS_VALUE;
|
|
}
|
|
}
|
|
|
|
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) {
|
|
/* 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);
|
|
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];
|
|
av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
|
|
(double) st->start_time / AV_TIME_BASE,
|
|
(double) st->duration / AV_TIME_BASE);
|
|
}
|
|
av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
|
|
(double) ic->start_time / AV_TIME_BASE,
|
|
(double) ic->duration / AV_TIME_BASE,
|
|
ic->bit_rate / 1000);
|
|
}
|
|
}
|
|
|
|
static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
|
|
{
|
|
AVCodecContext *avctx = st->codec;
|
|
|
|
#define FAIL(errmsg) do { \
|
|
if (errmsg_ptr) \
|
|
*errmsg_ptr = errmsg; \
|
|
return 0; \
|
|
} while (0)
|
|
|
|
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->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
|
|
if (!st->sample_aspect_ratio.num && !st->codec->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;
|
|
}
|
|
|
|
if (avctx->codec_id == AV_CODEC_ID_NONE)
|
|
FAIL("unknown codec");
|
|
return 1;
|
|
}
|
|
|
|
/* returns 1 or 0 if or if not decoded data was returned, or a negative error */
|
|
static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
|
|
{
|
|
const AVCodec *codec;
|
|
int got_picture = 1, ret = 0;
|
|
AVFrame *frame = avcodec_alloc_frame();
|
|
AVSubtitle subtitle;
|
|
AVPacket pkt = *avpkt;
|
|
|
|
if (!frame)
|
|
return AVERROR(ENOMEM);
|
|
|
|
if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
|
|
AVDictionary *thread_opt = NULL;
|
|
|
|
codec = st->codec->codec ? st->codec->codec :
|
|
avcodec_find_decoder(st->codec->codec_id);
|
|
|
|
if (!codec) {
|
|
st->info->found_decoder = -1;
|
|
ret = -1;
|
|
goto fail;
|
|
}
|
|
|
|
/* force thread count to 1 since the h264 decoder will not extract SPS
|
|
* and PPS to extradata during multi-threaded decoding */
|
|
av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
|
|
ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
|
|
if (!options)
|
|
av_dict_free(&thread_opt);
|
|
if (ret < 0) {
|
|
st->info->found_decoder = -1;
|
|
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;
|
|
}
|
|
|
|
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 && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
|
|
got_picture = 0;
|
|
avcodec_get_frame_defaults(frame);
|
|
switch(st->codec->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
ret = avcodec_decode_video2(st->codec, frame,
|
|
&got_picture, &pkt);
|
|
break;
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
|
|
break;
|
|
case AVMEDIA_TYPE_SUBTITLE:
|
|
ret = avcodec_decode_subtitle2(st->codec, &subtitle,
|
|
&got_picture, &pkt);
|
|
ret = pkt.size;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (ret >= 0) {
|
|
if (got_picture)
|
|
st->nb_decoded_frames++;
|
|
pkt.data += ret;
|
|
pkt.size -= ret;
|
|
ret = got_picture;
|
|
}
|
|
}
|
|
|
|
if(!pkt.data && !got_picture)
|
|
ret = -1;
|
|
|
|
fail:
|
|
avcodec_free_frame(&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 (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;
|
|
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 = 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) ? ch->start : end;
|
|
}
|
|
}
|
|
|
|
static int get_std_framerate(int i){
|
|
if(i<60*12) return (i+1)*1001;
|
|
else return ((const int[]){24,30,60,12,15,48})[i-60*12]*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 >= 101L*c->time_base.num
|
|
|| c->time_base.den < 5L*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_H264
|
|
)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
#if FF_API_FORMAT_PARAMETERS
|
|
int av_find_stream_info(AVFormatContext *ic)
|
|
{
|
|
return avformat_find_stream_info(ic, NULL);
|
|
}
|
|
#endif
|
|
|
|
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
|
|
{
|
|
int i, count, ret = 0, j;
|
|
int64_t read_size;
|
|
AVStream *st;
|
|
AVPacket pkt1, *pkt;
|
|
int64_t old_offset = avio_tell(ic->pb);
|
|
int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
|
|
int flush_codecs = ic->probesize > 0;
|
|
|
|
if(ic->pb)
|
|
av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
|
|
|
|
for(i=0;i<ic->nb_streams;i++) {
|
|
const AVCodec *codec;
|
|
AVDictionary *thread_opt = NULL;
|
|
st = ic->streams[i];
|
|
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
|
|
st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
|
|
/* if(!st->time_base.num)
|
|
st->time_base= */
|
|
if(!st->codec->time_base.num)
|
|
st->codec->time_base= st->time_base;
|
|
}
|
|
//only for the split stuff
|
|
if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
|
|
st->parser = av_parser_init(st->codec->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->codec->codec_id));
|
|
}
|
|
}
|
|
codec = st->codec->codec ? st->codec->codec :
|
|
avcodec_find_decoder(st->codec->codec_id);
|
|
|
|
/* force thread count to 1 since the h264 decoder will not extract SPS
|
|
* and PPS to extradata during multi-threaded decoding */
|
|
av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
|
|
|
|
/* Ensure that subtitle_header is properly set. */
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
|
|
&& codec && !st->codec->codec)
|
|
avcodec_open2(st->codec, codec, options ? &options[i]
|
|
: &thread_opt);
|
|
|
|
//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 && !st->codec->codec)
|
|
avcodec_open2(st->codec, codec, options ? &options[i]
|
|
: &thread_opt);
|
|
}
|
|
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;
|
|
}
|
|
|
|
count = 0;
|
|
read_size = 0;
|
|
for(;;) {
|
|
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;
|
|
|
|
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 (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 */
|
|
if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
|
|
&& st->info->duration_count < fps_analyze_framecount
|
|
&& st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
|
|
break;
|
|
if(st->parser && st->parser->parser->split && !st->codec->extradata)
|
|
break;
|
|
if (st->first_dts == AV_NOPTS_VALUE &&
|
|
(st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
|
|
st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
|
|
break;
|
|
}
|
|
if (i == ic->nb_streams) {
|
|
/* 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 >= ic->probesize) {
|
|
ret = count;
|
|
av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
|
|
for (i = 0; i < ic->nb_streams; i++)
|
|
if (!ic->streams[i]->r_frame_rate.num &&
|
|
ic->streams[i]->info->duration_count <= 1)
|
|
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*/
|
|
break;
|
|
}
|
|
|
|
if (ic->flags & AVFMT_FLAG_NOBUFFER)
|
|
free_packet_buffer(&ic->packet_buffer, &ic->packet_buffer_end);
|
|
{
|
|
pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
|
|
&ic->packet_buffer_end);
|
|
if (!pkt) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto find_stream_info_err;
|
|
}
|
|
if ((ret = av_dup_packet(pkt)) < 0)
|
|
goto find_stream_info_err;
|
|
}
|
|
|
|
read_size += pkt->size;
|
|
|
|
st = ic->streams[pkt->stream_index];
|
|
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 - st->info->fps_last_dts) / 1000 >
|
|
(st->info->fps_last_dts - 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;
|
|
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 (t >= ic->max_analyze_duration) {
|
|
av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
|
|
break;
|
|
}
|
|
if (pkt->duration) {
|
|
st->info->codec_info_duration += pkt->duration;
|
|
st->info->codec_info_duration_fields += st->parser && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
|
|
}
|
|
}
|
|
#if FF_API_R_FRAME_RATE
|
|
{
|
|
int64_t last = st->info->last_dts;
|
|
|
|
if( pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last
|
|
&& pkt->dts - (uint64_t)last < INT64_MAX){
|
|
double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
|
|
int64_t duration= pkt->dts - 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++) {
|
|
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;
|
|
}
|
|
}
|
|
st->info->duration_count++;
|
|
// ignore the first 4 values, they might have some random jitter
|
|
if (st->info->duration_count > 3 && is_relative(pkt->dts) == is_relative(last))
|
|
st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
|
|
}
|
|
if (pkt->dts != AV_NOPTS_VALUE)
|
|
st->info->last_dts = pkt->dts;
|
|
}
|
|
#endif
|
|
if(st->parser && st->parser->parser->split && !st->codec->extradata){
|
|
int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
|
|
if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
|
|
st->codec->extradata_size= i;
|
|
st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!st->codec->extradata)
|
|
return AVERROR(ENOMEM);
|
|
memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
|
|
memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
|
|
}
|
|
}
|
|
|
|
/* 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 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(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
|
|
|
|
st->codec_info_nb_frames++;
|
|
count++;
|
|
}
|
|
|
|
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(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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// close codecs which were opened in try_decode_frame()
|
|
for(i=0;i<ic->nb_streams;i++) {
|
|
st = ic->streams[i];
|
|
avcodec_close(st->codec);
|
|
}
|
|
for(i=0;i<ic->nb_streams;i++) {
|
|
st = ic->streams[i];
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
|
|
uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
|
|
if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
|
|
st->codec->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;
|
|
|
|
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)
|
|
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 = 1; 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 (best_fps) {
|
|
av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
|
|
best_fps, 12*1001, INT_MAX);
|
|
}
|
|
}
|
|
// the check for tb_unreliable() is not completely correct, since this is not about handling
|
|
// a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
|
|
// ipmovie.c produces.
|
|
if (tb_unreliable(st->codec) && 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->codec)) {
|
|
int num = 0;
|
|
double best_error= 0.01;
|
|
|
|
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*12.0)/get_std_framerate(j))
|
|
continue;
|
|
if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/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(NULL, 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 && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
|
|
av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
|
|
}
|
|
|
|
if (!st->r_frame_rate.num){
|
|
if( st->codec->time_base.den * (int64_t)st->time_base.num
|
|
<= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
|
|
st->r_frame_rate.num = st->codec->time_base.den;
|
|
st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
|
|
}else{
|
|
st->r_frame_rate.num = st->time_base.den;
|
|
st->r_frame_rate.den = st->time_base.num;
|
|
}
|
|
}
|
|
}else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
if(!st->codec->bits_per_coded_sample)
|
|
st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
|
|
// set stream disposition based on audio service type
|
|
switch (st->codec->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(ic->probesize)
|
|
estimate_timings(ic, old_offset);
|
|
|
|
if (ret >= 0 && ic->nb_streams)
|
|
ret = -1; /* we could not have all the codec parameters before EOF */
|
|
for(i=0;i<ic->nb_streams;i++) {
|
|
const char *errmsg;
|
|
st = ic->streams[i];
|
|
if (!has_codec_parameters(st, &errmsg)) {
|
|
char buf[256];
|
|
avcodec_string(buf, sizeof(buf), st->codec, 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' and 'probesize' options\n",
|
|
i, buf, errmsg);
|
|
} else {
|
|
ret = 0;
|
|
}
|
|
}
|
|
|
|
compute_chapters_end(ic);
|
|
|
|
find_stream_info_err:
|
|
for (i=0; i < ic->nb_streams; i++) {
|
|
st = ic->streams[i];
|
|
if (ic->streams[i]->codec && ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
|
|
ic->streams[i]->codec->thread_count = 0;
|
|
if (st->info)
|
|
av_freep(&st->info->duration_error);
|
|
av_freep(&ic->streams[i]->info);
|
|
}
|
|
if(ic->pb)
|
|
av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
|
|
return ret;
|
|
}
|
|
|
|
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, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
|
|
unsigned *program = NULL;
|
|
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];
|
|
AVCodecContext *avctx = st->codec;
|
|
if (avctx->codec_type != type)
|
|
continue;
|
|
if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
|
|
continue;
|
|
if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
|
|
continue;
|
|
if (decoder_ret) {
|
|
decoder = avcodec_find_decoder(st->codec->codec_id);
|
|
if (!decoder) {
|
|
if (ret < 0)
|
|
ret = AVERROR_DECODER_NOT_FOUND;
|
|
continue;
|
|
}
|
|
}
|
|
count = st->codec_info_nb_frames;
|
|
bitrate = avctx->bit_rate;
|
|
multiframe = FFMIN(5, count);
|
|
if ((best_multiframe > multiframe) ||
|
|
(best_multiframe == multiframe && best_bitrate > bitrate) ||
|
|
(best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
|
|
continue;
|
|
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;
|
|
i = 0; /* no related stream found, try again with everything */
|
|
}
|
|
}
|
|
if (decoder_ret)
|
|
*decoder_ret = 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);
|
|
}
|
|
|
|
void ff_free_stream(AVFormatContext *s, AVStream *st){
|
|
av_assert0(s->nb_streams>0);
|
|
av_assert0(s->streams[ s->nb_streams-1 ] == st);
|
|
|
|
if (st->parser) {
|
|
av_parser_close(st->parser);
|
|
}
|
|
if (st->attached_pic.data)
|
|
av_free_packet(&st->attached_pic);
|
|
av_dict_free(&st->metadata);
|
|
av_freep(&st->probe_data.buf);
|
|
av_freep(&st->index_entries);
|
|
av_freep(&st->codec->extradata);
|
|
av_freep(&st->codec->subtitle_header);
|
|
av_freep(&st->codec);
|
|
av_freep(&st->priv_data);
|
|
if (st->info)
|
|
av_freep(&st->info->duration_error);
|
|
av_freep(&st->info);
|
|
av_freep(&s->streams[ --s->nb_streams ]);
|
|
}
|
|
|
|
void avformat_free_context(AVFormatContext *s)
|
|
{
|
|
int i;
|
|
|
|
if (!s)
|
|
return;
|
|
|
|
av_opt_free(s);
|
|
if (s->iformat && s->iformat->priv_class && s->priv_data)
|
|
av_opt_free(s->priv_data);
|
|
|
|
for(i=s->nb_streams-1; i>=0; i--) {
|
|
ff_free_stream(s, s->streams[i]);
|
|
}
|
|
for(i=s->nb_programs-1; i>=0; i--) {
|
|
av_dict_free(&s->programs[i]->metadata);
|
|
av_freep(&s->programs[i]->stream_index);
|
|
av_freep(&s->programs[i]);
|
|
}
|
|
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_freep(&s->streams);
|
|
av_free(s);
|
|
}
|
|
|
|
#if FF_API_CLOSE_INPUT_FILE
|
|
void av_close_input_file(AVFormatContext *s)
|
|
{
|
|
avformat_close_input(&s);
|
|
}
|
|
#endif
|
|
|
|
void avformat_close_input(AVFormatContext **ps)
|
|
{
|
|
AVFormatContext *s = *ps;
|
|
AVIOContext *pb = s->pb;
|
|
|
|
if ((s->iformat && 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);
|
|
}
|
|
|
|
#if FF_API_NEW_STREAM
|
|
AVStream *av_new_stream(AVFormatContext *s, int id)
|
|
{
|
|
AVStream *st = avformat_new_stream(s, NULL);
|
|
if (st)
|
|
st->id = id;
|
|
return st;
|
|
}
|
|
#endif
|
|
|
|
AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
|
|
{
|
|
AVStream *st;
|
|
int i;
|
|
AVStream **streams;
|
|
|
|
if (s->nb_streams >= INT_MAX/sizeof(*streams))
|
|
return NULL;
|
|
streams = av_realloc(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;
|
|
|
|
st->codec = avcodec_alloc_context3(c);
|
|
if (s->iformat) {
|
|
/* no default bitrate if decoding */
|
|
st->codec->bit_rate = 0;
|
|
}
|
|
st->index = s->nb_streams;
|
|
st->start_time = AV_NOPTS_VALUE;
|
|
st->duration = AV_NOPTS_VALUE;
|
|
/* 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 = s->iformat ? RELATIVE_TS_BASE : 0;
|
|
st->first_dts = AV_NOPTS_VALUE;
|
|
st->probe_packets = MAX_PROBE_PACKETS;
|
|
st->pts_wrap_reference = AV_NOPTS_VALUE;
|
|
st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
|
|
|
|
/* default pts setting is MPEG-like */
|
|
avpriv_set_pts_info(st, 33, 1, 90000);
|
|
st->last_IP_pts = AV_NOPTS_VALUE;
|
|
for(i=0; i<MAX_REORDER_DELAY+1; i++)
|
|
st->pts_buffer[i]= AV_NOPTS_VALUE;
|
|
st->reference_dts = 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;
|
|
|
|
s->streams[s->nb_streams++] = st;
|
|
return st;
|
|
}
|
|
|
|
AVProgram *av_new_program(AVFormatContext *ac, int id)
|
|
{
|
|
AVProgram *program=NULL;
|
|
int i;
|
|
|
|
av_dlog(ac, "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->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;
|
|
|
|
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 ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int 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(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
|
|
if(!tmp)
|
|
return;
|
|
program->stream_index = tmp;
|
|
program->stream_index[program->nb_stream_indexes++] = idx;
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void print_fps(double d, const char *postfix){
|
|
uint64_t v= lrintf(d*100);
|
|
if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
|
|
else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
|
|
else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
|
|
}
|
|
|
|
static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
|
|
{
|
|
if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
|
|
AVDictionaryEntry *tag=NULL;
|
|
|
|
av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
|
|
while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
|
|
if(strcmp("language", tag->key)){
|
|
const char *p = tag->value;
|
|
av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
|
|
while(*p) {
|
|
char tmp[256];
|
|
size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
|
|
av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
|
|
av_log(ctx, AV_LOG_INFO, "%s", tmp);
|
|
p += len;
|
|
if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
|
|
if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
|
|
if (*p) p++;
|
|
}
|
|
av_log(ctx, AV_LOG_INFO, "\n");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* "user interface" functions */
|
|
static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
|
|
{
|
|
char buf[256];
|
|
int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
|
|
AVStream *st = ic->streams[i];
|
|
int g = av_gcd(st->time_base.num, st->time_base.den);
|
|
AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
|
|
avcodec_string(buf, sizeof(buf), st->codec, is_output);
|
|
av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
|
|
/* the pid is an important information, so we display it */
|
|
/* XXX: add a generic system */
|
|
if (flags & AVFMT_SHOW_IDS)
|
|
av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
|
|
if (lang)
|
|
av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
|
|
av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
|
|
av_log(NULL, AV_LOG_INFO, ": %s", buf);
|
|
if (st->sample_aspect_ratio.num && // default
|
|
av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
|
|
AVRational display_aspect_ratio;
|
|
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
|
|
st->codec->width*st->sample_aspect_ratio.num,
|
|
st->codec->height*st->sample_aspect_ratio.den,
|
|
1024*1024);
|
|
av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
|
|
st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
|
|
display_aspect_ratio.num, display_aspect_ratio.den);
|
|
}
|
|
if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
|
|
if(st->avg_frame_rate.den && st->avg_frame_rate.num)
|
|
print_fps(av_q2d(st->avg_frame_rate), "fps");
|
|
#if FF_API_R_FRAME_RATE
|
|
if(st->r_frame_rate.den && st->r_frame_rate.num)
|
|
print_fps(av_q2d(st->r_frame_rate), "tbr");
|
|
#endif
|
|
if(st->time_base.den && st->time_base.num)
|
|
print_fps(1/av_q2d(st->time_base), "tbn");
|
|
if(st->codec->time_base.den && st->codec->time_base.num)
|
|
print_fps(1/av_q2d(st->codec->time_base), "tbc");
|
|
}
|
|
if (st->disposition & AV_DISPOSITION_DEFAULT)
|
|
av_log(NULL, AV_LOG_INFO, " (default)");
|
|
if (st->disposition & AV_DISPOSITION_DUB)
|
|
av_log(NULL, AV_LOG_INFO, " (dub)");
|
|
if (st->disposition & AV_DISPOSITION_ORIGINAL)
|
|
av_log(NULL, AV_LOG_INFO, " (original)");
|
|
if (st->disposition & AV_DISPOSITION_COMMENT)
|
|
av_log(NULL, AV_LOG_INFO, " (comment)");
|
|
if (st->disposition & AV_DISPOSITION_LYRICS)
|
|
av_log(NULL, AV_LOG_INFO, " (lyrics)");
|
|
if (st->disposition & AV_DISPOSITION_KARAOKE)
|
|
av_log(NULL, AV_LOG_INFO, " (karaoke)");
|
|
if (st->disposition & AV_DISPOSITION_FORCED)
|
|
av_log(NULL, AV_LOG_INFO, " (forced)");
|
|
if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
|
|
av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
|
|
if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
|
|
av_log(NULL, AV_LOG_INFO, " (visual impaired)");
|
|
if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
|
|
av_log(NULL, AV_LOG_INFO, " (clean effects)");
|
|
av_log(NULL, AV_LOG_INFO, "\n");
|
|
dump_metadata(NULL, st->metadata, " ");
|
|
}
|
|
|
|
void av_dump_format(AVFormatContext *ic,
|
|
int index,
|
|
const char *url,
|
|
int is_output)
|
|
{
|
|
int i;
|
|
uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
|
|
if (ic->nb_streams && !printed)
|
|
return;
|
|
|
|
av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
|
|
is_output ? "Output" : "Input",
|
|
index,
|
|
is_output ? ic->oformat->name : ic->iformat->name,
|
|
is_output ? "to" : "from", url);
|
|
dump_metadata(NULL, ic->metadata, " ");
|
|
if (!is_output) {
|
|
av_log(NULL, AV_LOG_INFO, " Duration: ");
|
|
if (ic->duration != AV_NOPTS_VALUE) {
|
|
int hours, mins, secs, us;
|
|
int64_t duration = ic->duration + 5000;
|
|
secs = duration / AV_TIME_BASE;
|
|
us = duration % AV_TIME_BASE;
|
|
mins = secs / 60;
|
|
secs %= 60;
|
|
hours = mins / 60;
|
|
mins %= 60;
|
|
av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
|
|
(100 * us) / AV_TIME_BASE);
|
|
} else {
|
|
av_log(NULL, AV_LOG_INFO, "N/A");
|
|
}
|
|
if (ic->start_time != AV_NOPTS_VALUE) {
|
|
int secs, us;
|
|
av_log(NULL, AV_LOG_INFO, ", start: ");
|
|
secs = ic->start_time / AV_TIME_BASE;
|
|
us = abs(ic->start_time % AV_TIME_BASE);
|
|
av_log(NULL, AV_LOG_INFO, "%d.%06d",
|
|
secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
|
|
}
|
|
av_log(NULL, AV_LOG_INFO, ", bitrate: ");
|
|
if (ic->bit_rate) {
|
|
av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
|
|
} else {
|
|
av_log(NULL, AV_LOG_INFO, "N/A");
|
|
}
|
|
av_log(NULL, AV_LOG_INFO, "\n");
|
|
}
|
|
for (i = 0; i < ic->nb_chapters; i++) {
|
|
AVChapter *ch = ic->chapters[i];
|
|
av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
|
|
av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
|
|
av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
|
|
|
|
dump_metadata(NULL, ch->metadata, " ");
|
|
}
|
|
if(ic->nb_programs) {
|
|
int j, k, total = 0;
|
|
for(j=0; j<ic->nb_programs; j++) {
|
|
AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
|
|
"name", NULL, 0);
|
|
av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
|
|
name ? name->value : "");
|
|
dump_metadata(NULL, ic->programs[j]->metadata, " ");
|
|
for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
|
|
dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
|
|
printed[ic->programs[j]->stream_index[k]] = 1;
|
|
}
|
|
total += ic->programs[j]->nb_stream_indexes;
|
|
}
|
|
if (total < ic->nb_streams)
|
|
av_log(NULL, AV_LOG_INFO, " No Program\n");
|
|
}
|
|
for(i=0;i<ic->nb_streams;i++)
|
|
if (!printed[i])
|
|
dump_stream_format(ic, i, index, is_output);
|
|
|
|
av_free(printed);
|
|
}
|
|
|
|
uint64_t ff_ntp_time(void)
|
|
{
|
|
return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
|
|
}
|
|
|
|
int av_get_frame_filename(char *buf, int buf_size,
|
|
const char *path, int number)
|
|
{
|
|
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 (percentd_found)
|
|
goto fail;
|
|
percentd_found = 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;
|
|
}
|
|
|
|
static void hex_dump_internal(void *avcl, FILE *f, int level,
|
|
const uint8_t *buf, int size)
|
|
{
|
|
int len, i, j, c;
|
|
#define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
|
|
|
|
for(i=0;i<size;i+=16) {
|
|
len = size - i;
|
|
if (len > 16)
|
|
len = 16;
|
|
PRINT("%08x ", i);
|
|
for(j=0;j<16;j++) {
|
|
if (j < len)
|
|
PRINT(" %02x", buf[i+j]);
|
|
else
|
|
PRINT(" ");
|
|
}
|
|
PRINT(" ");
|
|
for(j=0;j<len;j++) {
|
|
c = buf[i+j];
|
|
if (c < ' ' || c > '~')
|
|
c = '.';
|
|
PRINT("%c", c);
|
|
}
|
|
PRINT("\n");
|
|
}
|
|
#undef PRINT
|
|
}
|
|
|
|
void av_hex_dump(FILE *f, const uint8_t *buf, int size)
|
|
{
|
|
hex_dump_internal(NULL, f, 0, buf, size);
|
|
}
|
|
|
|
void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
|
|
{
|
|
hex_dump_internal(avcl, NULL, level, buf, size);
|
|
}
|
|
|
|
static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
|
|
{
|
|
#define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
|
|
PRINT("stream #%d:\n", pkt->stream_index);
|
|
PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
|
|
PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
|
|
/* DTS is _always_ valid after av_read_frame() */
|
|
PRINT(" dts=");
|
|
if (pkt->dts == AV_NOPTS_VALUE)
|
|
PRINT("N/A");
|
|
else
|
|
PRINT("%0.3f", pkt->dts * av_q2d(time_base));
|
|
/* PTS may not be known if B-frames are present. */
|
|
PRINT(" pts=");
|
|
if (pkt->pts == AV_NOPTS_VALUE)
|
|
PRINT("N/A");
|
|
else
|
|
PRINT("%0.3f", pkt->pts * av_q2d(time_base));
|
|
PRINT("\n");
|
|
PRINT(" size=%d\n", pkt->size);
|
|
#undef PRINT
|
|
if (dump_payload)
|
|
av_hex_dump(f, pkt->data, pkt->size);
|
|
}
|
|
|
|
#if FF_API_PKT_DUMP
|
|
void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
|
|
{
|
|
AVRational tb = { 1, AV_TIME_BASE };
|
|
pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
|
|
}
|
|
#endif
|
|
|
|
void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
|
|
{
|
|
pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
|
|
}
|
|
|
|
#if FF_API_PKT_DUMP
|
|
void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
|
|
{
|
|
AVRational tb = { 1, AV_TIME_BASE };
|
|
pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
|
|
}
|
|
#endif
|
|
|
|
void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
|
|
AVStream *st)
|
|
{
|
|
pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
|
|
}
|
|
|
|
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, *ls2, *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 = strchr(p, '/');
|
|
ls2 = strchr(p, '?');
|
|
if(!ls)
|
|
ls = ls2;
|
|
else if (ls && ls2)
|
|
ls = FFMIN(ls, ls2);
|
|
if(ls)
|
|
av_strlcpy(path, ls, path_size);
|
|
else
|
|
ls = &p[strlen(p)]; // XXX
|
|
|
|
/* 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));
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
#if FF_API_SET_PTS_INFO
|
|
void av_set_pts_info(AVStream *s, int pts_wrap_bits,
|
|
unsigned int pts_num, unsigned int pts_den)
|
|
{
|
|
avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
|
|
}
|
|
#endif
|
|
|
|
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;
|
|
av_codec_set_pkt_timebase(s->codec, 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;
|
|
}
|
|
|
|
int64_t ff_iso8601_to_unix_time(const char *datestr)
|
|
{
|
|
struct tm time1 = {0}, time2 = {0};
|
|
char *ret1, *ret2;
|
|
ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
|
|
ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
|
|
if (ret2 && !ret1)
|
|
return av_timegm(&time2);
|
|
else
|
|
return av_timegm(&time1);
|
|
}
|
|
|
|
int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
|
|
{
|
|
if (ofmt) {
|
|
if (ofmt->query_codec)
|
|
return ofmt->query_codec(codec_id, std_compliance);
|
|
else if (ofmt->codec_tag)
|
|
return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
|
|
else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
|
|
codec_id == ofmt->subtitle_codec)
|
|
return 1;
|
|
}
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
int avformat_network_init(void)
|
|
{
|
|
#if CONFIG_NETWORK
|
|
int ret;
|
|
ff_network_inited_globally = 1;
|
|
if ((ret = ff_network_init()) < 0)
|
|
return ret;
|
|
ff_tls_init();
|
|
#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->codec ? stream->codec->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;
|
|
|
|
if (st->codec->ticks_per_frame > 1) {
|
|
AVRational codec_fr = av_inv_q(st->codec->time_base);
|
|
AVRational avg_fr = st->avg_frame_rate;
|
|
codec_fr.den *= st->codec->ticks_per_frame;
|
|
if ( codec_fr.num > 0 && codec_fr.den > 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;
|
|
}
|
|
|
|
int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
|
|
const char *spec)
|
|
{
|
|
if (*spec <= '9' && *spec >= '0') /* opt:index */
|
|
return strtol(spec, NULL, 0) == st->index;
|
|
else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
|
|
*spec == 't') { /* opt:[vasdt] */
|
|
enum AVMediaType type;
|
|
|
|
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;
|
|
default: av_assert0(0);
|
|
}
|
|
if (type != st->codec->codec_type)
|
|
return 0;
|
|
if (*spec++ == ':') { /* possibly followed by :index */
|
|
int i, index = strtol(spec, NULL, 0);
|
|
for (i = 0; i < s->nb_streams; i++)
|
|
if (s->streams[i]->codec->codec_type == type && index-- == 0)
|
|
return i == st->index;
|
|
return 0;
|
|
}
|
|
return 1;
|
|
} else if (*spec == 'p' && *(spec + 1) == ':') {
|
|
int prog_id, i, j;
|
|
char *endptr;
|
|
spec += 2;
|
|
prog_id = strtol(spec, &endptr, 0);
|
|
for (i = 0; i < s->nb_programs; i++) {
|
|
if (s->programs[i]->id != prog_id)
|
|
continue;
|
|
|
|
if (*endptr++ == ':') {
|
|
int stream_idx = strtol(endptr, NULL, 0);
|
|
return stream_idx >= 0 &&
|
|
stream_idx < s->programs[i]->nb_stream_indexes &&
|
|
st->index == s->programs[i]->stream_index[stream_idx];
|
|
}
|
|
|
|
for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
|
|
if (st->index == s->programs[i]->stream_index[j])
|
|
return 1;
|
|
}
|
|
return 0;
|
|
} else if (*spec == '#') {
|
|
int sid;
|
|
char *endptr;
|
|
sid = strtol(spec + 1, &endptr, 0);
|
|
if (!*endptr)
|
|
return st->id == sid;
|
|
} else if (!*spec) /* empty specifier, matches everything */
|
|
return 1;
|
|
|
|
av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
void 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, 0x00,
|
|
// PPS
|
|
0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
|
|
0xd0
|
|
};
|
|
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
|
|
};
|
|
int size = 0;
|
|
const uint8_t *data = 0;
|
|
if (st->codec->width == 1920) {
|
|
if (st->codec->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->codec->width == 1440) {
|
|
data = avci50_1080i_extradata;
|
|
size = sizeof(avci50_1080i_extradata);
|
|
} else if (st->codec->width == 1280) {
|
|
data = avci100_720p_extradata;
|
|
size = sizeof(avci100_720p_extradata);
|
|
}
|
|
if (!size)
|
|
return;
|
|
av_freep(&st->codec->extradata);
|
|
st->codec->extradata_size = 0;
|
|
st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!st->codec->extradata)
|
|
return;
|
|
memcpy(st->codec->extradata, data, size);
|
|
st->codec->extradata_size = size;
|
|
}
|