[FFmpeg-cvslog] Detect NI-avi at playtime like mplayer.

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Wed Aug  3 17:44:50 2011 +0200| [46eaaad8dd12eb6c962bc0f1d528afff933dc872] | committer: Michael Niedermayer

Detect NI-avi at playtime like mplayer.
Fixes Ticket333

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=46eaaad8dd12eb6c962bc0f1d528afff933dc872
---

 libavformat/avidec.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/libavformat/avidec.c b/libavformat/avidec.c
index 2814b89..5dac749 100644
--- a/libavformat/avidec.c
+++ b/libavformat/avidec.c
@@ -73,6 +73,7 @@ typedef struct {
     int odml_depth;
     int use_odml;
 #define MAX_ODML_DEPTH 1000
+    int64_t dts_max;
 } AVIContext;
 
 
@@ -1168,6 +1169,16 @@ resync:
         }
         ast->seek_pos= 0;
 
+        if(!avi->non_interleaved && st->nb_index_entries>1){
+            int64_t dts= av_rescale_q(pkt->dts, st->time_base, AV_TIME_BASE_Q);
+
+            if(avi->dts_max - dts > 2*AV_TIME_BASE){
+                avi->non_interleaved= 1;
+                av_log(s, AV_LOG_INFO, "Switching to NI mode, due to poor interleaving\n");
+            }else if(avi->dts_max < dts)
+                avi->dts_max = dts;
+        }
+
         return size;
     }
 
@@ -1407,6 +1418,7 @@ static int avi_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp
     /* do the seek */
     avio_seek(s->pb, pos_min, SEEK_SET);
     avi->stream_index= -1;
+    avi->dts_max= INT_MIN;
     return 0;
 }