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demux_lavf: remove subtitle seeking special-case

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It used not to work - but now it apparently does. Not sure when that got
fixed in FFmpeg, but there's no longer a reason to keep this hack.

This also gets rid of the check for the read_seek2 field, which is not
part of the public API.
This commit is contained in:
wm4 2016-07-24 18:41:55 +02:00
parent 99d9921f39
commit d60db967bd
1 changed files with 7 additions and 22 deletions
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29
demux/demux_lavf.c
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@ -953,30 +953,15 @@ static void demux_seek_lavf(demuxer_t *demuxer, double seek_pts, int flags)
seek_pts_av = seek_pts * AV_TIME_BASE;
}
int r;
if (!priv->avfc->iformat->read_seek2) {
// Normal seeking.
int r = av_seek_frame(priv->avfc, -1, seek_pts_av, avsflags);
if (r < 0 && (avsflags & AVSEEK_FLAG_BACKWARD)) {
// When seeking before the beginning of the file, and seeking fails,
// try again without the backwards flag to make it seek to the
// beginning.
avsflags &= ~AVSEEK_FLAG_BACKWARD;
r = av_seek_frame(priv->avfc, -1, seek_pts_av, avsflags);
if (r < 0 && (avsflags & AVSEEK_FLAG_BACKWARD)) {
// When seeking before the beginning of the file, and seeking fails,
// try again without the backwards flag to make it seek to the
// beginning.
avsflags &= ~AVSEEK_FLAG_BACKWARD;
r = av_seek_frame(priv->avfc, -1, seek_pts_av, avsflags);
}
} else {
// av_seek_frame() won't work. Use "new" seeking API. We don't use this
// API by default, because there are some major issues.
// Set max_ts==ts, so that demuxing starts from an earlier position in
// the worst case.
r = avformat_seek_file(priv->avfc, -1, INT64_MIN,
seek_pts_av, seek_pts_av, avsflags);
// Similar issue as in the normal seeking codepath.
if (r < 0) {
r = avformat_seek_file(priv->avfc, -1, INT64_MIN,
seek_pts_av, INT64_MAX, avsflags);
}
}
if (r < 0) {
char buf[180];
av_strerror(r, buf, sizeof(buf));