[libav-commits] mpegvideo: check ff_find_unused_picture() return value for errors

[Janne Grunau]

Module: libav
Branch: master
Commit: 01fc5d6609e31539684785295d6c10b84d70b215

Author:    Janne Grunau <janne-li...@jannau.net>
Committer: Janne Grunau <janne-li...@jannau.net>
Date:      Sat Sep  8 15:56:52 2012 +0200

mpegvideo: check ff_find_unused_picture() return value for errors

---

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

diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 4682ab1..f9f5c52 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -1341,6 +1341,10 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext 
*avctx)
             pic = s->current_picture_ptr;
         } else {
             i   = ff_find_unused_picture(s, 0);
+            if (i < 0) {
+                av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
+                return i;
+            }
             pic = &s->picture[i];
         }
 
@@ -1404,6 +1408,10 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext 
*avctx)
 
             /* Allocate a dummy frame */
             i = ff_find_unused_picture(s, 0);
+            if (i < 0) {
+                av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
+                return i;
+            }
             s->last_picture_ptr = &s->picture[i];
             if (ff_alloc_picture(s, s->last_picture_ptr, 0) < 0) {
                 s->last_picture_ptr = NULL;
@@ -1418,6 +1426,10 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext 
*avctx)
             s->pict_type == AV_PICTURE_TYPE_B) {
             /* Allocate a dummy frame */
             i = ff_find_unused_picture(s, 0);
+            if (i < 0) {
+                av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
+                return i;
+            }
             s->next_picture_ptr = &s->picture[i];
             if (ff_alloc_picture(s, s->next_picture_ptr, 0) < 0) {
                 s->next_picture_ptr = NULL;

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