Module: libav Branch: master Commit: 69fa23961ededd725c68b188493cf2653d70f4fd
Author: Vladimir Pantelic <[email protected]> Committer: Reinhard Tartler <[email protected]> Date: Tue May 17 17:30:05 2011 +0200 asfdec: do not fall back to binary/generic search asf_read_seek() inside the asf demuxer already does the right thing, it tries the index and if that fails it uses binary search. If binary search is called from outside of asfdec.c it will fail because the asf code cannot clean up after itself. Therefore introduce AVFMT_NOBINSEARCH that prevents the seek code to fallback to binary search and AVFMT_NOGENSEARCH that prevents the seek code to fallback to generic search. --- libavformat/asfdec.c | 1 + libavformat/avformat.h | 2 ++ libavformat/utils.c | 6 ++++-- 3 files changed, 7 insertions(+), 2 deletions(-) diff --git a/libavformat/asfdec.c b/libavformat/asfdec.c index f0c746a..e9a3995 100644 --- a/libavformat/asfdec.c +++ b/libavformat/asfdec.c @@ -1299,4 +1299,5 @@ AVInputFormat ff_asf_demuxer = { asf_read_close, asf_read_seek, asf_read_pts, + .flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH, }; diff --git a/libavformat/avformat.h b/libavformat/avformat.h index 7327562..aca246d 100644 --- a/libavformat/avformat.h +++ b/libavformat/avformat.h @@ -258,6 +258,8 @@ typedef struct AVFormatParameters { #define AVFMT_VARIABLE_FPS 0x0400 /**< Format allows variable fps. */ #define AVFMT_NODIMENSIONS 0x0800 /**< Format does not need width/height */ #define AVFMT_NOSTREAMS 0x1000 /**< Format does not require any streams */ +#define AVFMT_NOBINSEARCH 0x2000 /**< Format does not allow to fallback to binary search via read_timestamp */ +#define AVFMT_NOGENSEARCH 0x4000 /**< Format does not allow to fallback to generic search */ typedef struct AVOutputFormat { const char *name; diff --git a/libavformat/utils.c b/libavformat/utils.c index 67aa76a..ad22601 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -1713,10 +1713,12 @@ int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int f return 0; } - if(s->iformat->read_timestamp) + if(s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) return av_seek_frame_binary(s, stream_index, timestamp, flags); - else + else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) return av_seek_frame_generic(s, stream_index, timestamp, flags); + else + return -1; } int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags) _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
