[FFmpeg-cvslog] has_decode_delay_been_guessed: tighten up the heuristic.

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Mon Jul  2 23:23:33 2012 +0200| [a08efa2e3640ef0445032022c0b392376c58bd99] | committer: Michael Niedermayer

has_decode_delay_been_guessed: tighten up the heuristic.

This adds the minimum delay needed with the current decoder to
recognize the reorder buffer size for the reference bitstreams.

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a08efa2e3640ef0445032022c0b392376c58bd99
---

 libavformat/utils.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 67616af..70f8d46 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2292,7 +2292,10 @@ static int has_decode_delay_been_guessed(AVStream *st)
 #endif
     if(st->codec->has_b_frames<3)
         return st->info->nb_decoded_frames >= 6;
-    return st->info->nb_decoded_frames >= 20;
+    else if(st->codec->has_b_frames<4)
+        return st->info->nb_decoded_frames >= 18;
+    else
+        return st->info->nb_decoded_frames >= 20;
 }
 
 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */