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avformat/srtdec: Write duration into packet from srt demuxer. 

The current demuxer does not bother to write packet durations,
which makes it impossible to remux into a new format.

Signed-off-by: Philip Langdale <philipl@overt.org>
This commit is contained in:
Philip Langdale 2012-06-02 16:15:38 -07:00
parent 18175ca9b2
commit 7b24be557f
1 changed files with 13 additions and 6 deletions
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19
libavformat/srtdec.c
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@ -51,16 +51,23 @@ static int srt_read_header(AVFormatContext *s)
return 0;
}
static int64_t get_pts(const char *buf)
static int64_t get_pts(const char *buf, int *duration)
{
int i, v, hour, min, sec, hsec;
int i, hour, min, sec, hsec;
int he, me, se, mse;
for (i=0; i<2; i++) {
if (sscanf(buf, "%d:%2d:%2d%*1[,.]%3d --> %*d:%*2d:%*2d%*1[,.]%3d",
&hour, &min, &sec, &hsec, &v) == 5) {
int64_t start, end;
if (sscanf(buf, "%d:%2d:%2d%*1[,.]%3d --> %d:%2d:%2d%*1[,.]%3d",
&hour, &min, &sec, &hsec, &he, &me, &se, &mse) == 8) {
min += 60*hour;
sec += 60*min;
return sec*1000+hsec;
start = sec*1000+hsec;
me += 60*he;
se += 60*me;
end = se*1000+mse;
*duration = end - start;
return start;
}
buf += strcspn(buf, "\n") + 1;
}
@ -87,7 +94,7 @@ static int srt_read_packet(AVFormatContext *s, AVPacket *pkt)
memcpy(pkt->data, buffer, pkt->size);
pkt->flags |= AV_PKT_FLAG_KEY;
pkt->pos = pos;
pkt->pts = pkt->dts = get_pts(pkt->data);
pkt->pts = pkt->dts = get_pts(pkt->data, &(pkt->duration));
}
return res;
}