[FFmpeg-cvslog] vp56:Fix error recovery code on size changes in vp5/6 decoder

[Laurent Aimar]

ffmpeg | branch: release/0.8 | Laurent Aimar <fenrir at videolan.org> | Sat Sep 24 16:16:40 2011 +0200| [be22dc60f55bb99dcb0a90ad2e8773612a63a288] | committer: Michael Niedermayer

vp56:Fix error recovery code on size changes in vp5/6 decoder

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit 1aad9cd9d26adcca1d398a4cb3d67f89a6fa8967)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=be22dc60f55bb99dcb0a90ad2e8773612a63a288
---

 libavcodec/vp56.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/libavcodec/vp56.c b/libavcodec/vp56.c
index 30f3efb..5b787b6 100644
--- a/libavcodec/vp56.c
+++ b/libavcodec/vp56.c
@@ -465,6 +465,7 @@ static int vp56_size_changed(AVCodecContext *avctx)
     s->mb_height = (avctx->coded_height+15) / 16;
 
     if (s->mb_width > 1000 || s->mb_height > 1000) {
+        avcodec_set_dimensions(avctx, 0, 0);
         av_log(avctx, AV_LOG_ERROR, "picture too big\n");
         return -1;
     }
@@ -519,8 +520,10 @@ int ff_vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
                 if (s->frames[i].data[0])
                     avctx->release_buffer(avctx, &s->frames[i]);
             }
-            if (is_alpha)
+            if (is_alpha) {
+                avcodec_set_dimensions(avctx, 0, 0);
                 return -1;
+            }
         }
 
         if (!is_alpha) {