[gegl] ff-load: reduce amount of heuristics for delay in frame seeking

[Øyvind Kolås <ok src gnome org>]

commit c5cf3f037a5549120f991e766923c9c9e0959935
Author: Øyvind Kolås <pippin gimp org>
Date:   Wed Nov 25 16:46:40 2015 +0100

    ff-load: reduce amount of heuristics for delay in frame seeking

 operations/external/ff-load.c |   27 +++++++++++----------------
 1 files changed, 11 insertions(+), 16 deletions(-)
---
diff --git a/operations/external/ff-load.c b/operations/external/ff-load.c
index eda71d7..c62993d 100644
--- a/operations/external/ff-load.c
+++ b/operations/external/ff-load.c
@@ -539,25 +539,20 @@ prepare (GeglOperation *operation)
         fprintf (stdout, "duration: %02i:%02i:%02i\n", h, m, s);
       }
 #endif
-    }
 
-  /* is there a way to compute this from internals
-   */
-  if (!strcmp (o->video_codec, "mpeg1video"))
-    p->codec_delay = 1;
-  else if (!strcmp (o->video_codec, "mpeg4"))
-    p->codec_delay = 2;
-  else if (!strcmp (o->video_codec, "vp9"))
-    p->codec_delay = 2;
-  else if (!strcmp (o->video_codec, "theora"))
-    p->codec_delay = 2;
-  else if (!strcmp (o->video_codec, "h264"))
-    p->codec_delay = 0;
-  else
+    p->codec_delay = p->video_stream->codec->delay;
+  
+    if (!strcmp (o->video_codec, "mpeg1video"))
+      p->codec_delay = 1;
+    else if (!strcmp (o->video_codec, "h264"))
     {
-      p->codec_delay = 0;
-      fprintf (stderr, "[assuming no codec_delay for: %s]", o->video_codec);
+      if (strstr (p->video_fcontext->filename, ".mp4") ||
+          strstr (p->video_fcontext->filename, ".MP4"))    /* XXX: too hacky, isn't there an avformat thing 
to use? */
+        p->codec_delay = 3;
+      else
+        p->codec_delay = 0;
     }
+  }
 }
 
 static GeglRectangle