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dvd: flush buffers properly on seek

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Suggested by tholin on github issue #882.

This is not entirely clean, but the fields we're accessing might be
considered internal to libavformat. On the other hand, existence of the
fields is guaranteed by the ABI, and nothing in the libavformat doxygen
suggestes they're not allowed to be accessed.

CC: @mpv-player/stable
This commit is contained in:
wm4 2014-07-05 16:58:48 +02:00
parent 338004bcfc
commit 0cc3594623
1 changed files with 4 additions and 3 deletions
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7
demux/demux_lavf.c
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@ -983,11 +983,12 @@ redo:
* call the new API instead of relying on av_seek_frame() to do this
* for us.
*/
stream_drop_buffers(demuxer->stream);
avio_flush(priv->avfc->pb);
av_seek_frame(priv->avfc, 0, stream_tell(demuxer->stream),
AVSEEK_FLAG_BYTE);
avio_flush(priv->avfc->pb);
// avio_flush() is designed for write-only streams, and does the wrong
// thing when reading. Flush it manually instead.
priv->avfc->pb->buf_ptr = priv->avfc->pb->buf_end;
stream_drop_buffers(demuxer->stream);
return DEMUXER_CTRL_OK;
default:
return DEMUXER_CTRL_NOTIMPL;