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asfdec: subtract the preroll value and thus output 0 based timestamps

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Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Vladimir Pantelic 2011-03-17 14:56:14 +01:00 committed by Mans Rullgard
parent f1f60f5252
commit de11ee906e
2 changed files with 2 additions and 3 deletions
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3
libavformat/asfdec.c
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@ -236,6 +236,7 @@ static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
if (!asf_st)
return AVERROR(ENOMEM);
st->priv_data = asf_st;
st->start_time = 0;
start_time = asf->hdr.preroll;
asf_st->stream_language_index = 128; // invalid stream index means no language info
@ -960,7 +961,7 @@ static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pk
/* new packet */
av_new_packet(&asf_st->pkt, asf->packet_obj_size);
asf_st->seq = asf->packet_seq;
asf_st->pkt.dts = asf->packet_frag_timestamp;
asf_st->pkt.dts = asf->packet_frag_timestamp - asf->hdr.preroll;
asf_st->pkt.stream_index = asf->stream_index;
asf_st->pkt.pos =
asf_st->packet_pos= asf->packet_pos;

2
libavformat/avformat.h
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@ -534,8 +534,6 @@ typedef struct AVStream {
* Only set this if you are absolutely 100% sure that the value you set
* it to really is the pts of the first frame.
* This may be undefined (AV_NOPTS_VALUE).
* @note The ASF header does NOT contain a correct start_time the ASF
* demuxer must NOT set this.
*/
int64_t start_time;