From 32d885926dc6326865cd14bbe3e849f4d47f0db5 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 14 Mar 2009 15:51:46 +0000 Subject: [PATCH] add avformat_seek_file() Originally committed as revision 17956 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/utils.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/libavformat/utils.c b/libavformat/utils.c index 43de101e39..9f7bc48d5e 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -1584,6 +1584,28 @@ int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int f return av_seek_frame_generic(s, stream_index, timestamp, flags); } +int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags) +{ + if(min_ts > ts || max_ts < ts) + return -1; + + av_read_frame_flush(s); + + if (s->iformat->read_seek2) + return s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags); + + if(s->iformat->read_timestamp){ + //try to seek via read_timestamp() + } + + //Fallback to old API if new is not implemented but old is + //Note the old has somewat different sematics + if(s->iformat->read_seek || 1) + return av_seek_frame(s, stream_index, ts, ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0); + + // try some generic seek like av_seek_frame_generic() but with new ts semantics +} + /*******************************************************/ /**