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nutdec: Implement duration parsing for indexed nuts

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-05-02 18:44:22 +02:00
parent 60ab448042
commit fd68371b07
8 changed files with 45 additions and 45 deletions
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8
libavformat/nutdec.c
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@ -601,6 +601,7 @@ static int find_and_decode_index(NUTContext *nut)
int i, j, syncpoint_count;
int64_t filesize = avio_size(bc);
int64_t *syncpoints;
uint64_t max_pts;
int8_t *has_keyframe;
int ret = -1;
@ -620,7 +621,12 @@ static int find_and_decode_index(NUTContext *nut)
end = get_packetheader(nut, bc, 1, INDEX_STARTCODE);
end += avio_tell(bc);
ffio_read_varlen(bc); // max_pts
max_pts = ffio_read_varlen(bc);
s->duration = av_rescale_q(max_pts / nut->time_base_count,
nut->time_base[max_pts % nut->time_base_count],
AV_TIME_BASE_Q);
s->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
GET_V(syncpoint_count, tmp < INT_MAX / 8 && tmp > 0);
syncpoints = av_malloc(sizeof(int64_t) * syncpoint_count);
has_keyframe = av_malloc(sizeof(int8_t) * (syncpoint_count + 1));