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some sanity checks on what is muxed, invalid timestamps in mpeg are very common and lead to strange errors in the mpeg muxer otherwise

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Originally committed as revision 3752 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-12-14 16:19:26 +00:00
parent 7984bbe2ce
commit 5edea431d0
1 changed files with 16 additions and 3 deletions
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19
libavformat/utils.c
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@ -2034,7 +2034,7 @@ int av_write_header(AVFormatContext *s)
}
//FIXME merge with compute_pkt_fields
static void compute_pkt_fields2(AVStream *st, AVPacket *pkt){
static int compute_pkt_fields2(AVStream *st, AVPacket *pkt){
int b_frames = FFMAX(st->codec.has_b_frames, st->codec.max_b_frames);
int num, den, frame_size;
@ -2079,6 +2079,15 @@ static void compute_pkt_fields2(AVStream *st, AVPacket *pkt){
pkt->dts= pkt->pts;
}
if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && st->cur_dts >= pkt->dts){
av_log(NULL, AV_LOG_ERROR, "error, non monotone timestamps %Ld >= %Ld\n", st->cur_dts, pkt->dts);
return -1;
}
if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
av_log(NULL, AV_LOG_ERROR, "error, pts < dts\n");
return -1;
}
// av_log(NULL, AV_LOG_DEBUG, "av_write_frame: pts2:%lld dts2:%lld\n", pkt->pts, pkt->dts);
st->cur_dts= pkt->dts;
st->pts.val= pkt->dts;
@ -2100,6 +2109,7 @@ static void compute_pkt_fields2(AVStream *st, AVPacket *pkt){
default:
break;
}
return 0;
}
static void truncate_ts(AVStream *st, AVPacket *pkt){
@ -2124,7 +2134,9 @@ int av_write_frame(AVFormatContext *s, AVPacket *pkt)
{
int ret;
compute_pkt_fields2(s->streams[pkt->stream_index], pkt);
ret=compute_pkt_fields2(s->streams[pkt->stream_index], pkt);
if(ret<0)
return ret;
truncate_ts(s->streams[pkt->stream_index], pkt);
@ -2219,7 +2231,8 @@ static int av_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in,
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
AVStream *st= s->streams[ pkt->stream_index];
compute_pkt_fields2(st, pkt);
if(compute_pkt_fields2(st, pkt) < 0)
return -1;
//FIXME/XXX/HACK drop zero sized packets
if(st->codec.codec_type == CODEC_TYPE_AUDIO && pkt->size==0)