Merge commit 'ded9931d165544c342795a1b66e4777b6e7daeb0' into release/1.1

* commit 'ded9931d165544c342795a1b66e4777b6e7daeb0':
  rv10: check size of s->mb_width * s->mb_height

Merged-by: Michael Niedermayer <michaelni@gmx.at>

3 files changed, 12 insertions, 4 deletions

diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index 5b980310c4..66beb63692 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -910,7 +910,7 @@ int ff_h261_get_picture_format(int width, int height);
 
 
 /* rv10.c */
-void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number);
+int ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number);
 int ff_rv_decode_dc(MpegEncContext *s, int n);
 void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number);
 
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 1e4c58d9ce..90350a7a65 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -3447,8 +3447,11 @@ static int encode_picture(MpegEncContext *s, int picture_number)
             ff_msmpeg4_encode_picture_header(s, picture_number);
         else if (CONFIG_MPEG4_ENCODER && s->h263_pred)
             ff_mpeg4_encode_picture_header(s, picture_number);
-        else if (CONFIG_RV10_ENCODER && s->codec_id == AV_CODEC_ID_RV10)
-            ff_rv10_encode_picture_header(s, picture_number);
+        else if (CONFIG_RV10_ENCODER && s->codec_id == AV_CODEC_ID_RV10) {
+            ret = ff_rv10_encode_picture_header(s, picture_number);
+            if (ret < 0)
+                return ret;
+        }
         else if (CONFIG_RV20_ENCODER && s->codec_id == AV_CODEC_ID_RV20)
             ff_rv20_encode_picture_header(s, picture_number);
         else if (CONFIG_FLV_ENCODER && s->codec_id == AV_CODEC_ID_FLV1)
diff --git a/libavcodec/rv10enc.c b/libavcodec/rv10enc.c
index c4c5c53850..3bf44fb9b5 100644
--- a/libavcodec/rv10enc.c
+++ b/libavcodec/rv10enc.c
@@ -28,7 +28,7 @@
 #include "mpegvideo.h"
 #include "put_bits.h"
 
-void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number)
+int ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number)
 {
     int full_frame= 0;
 
@@ -48,12 +48,17 @@ void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number)
     /* if multiple packets per frame are sent, the position at which
        to display the macroblocks is coded here */
     if(!full_frame){
+        if (s->mb_width * s->mb_height >= (1U << 12)) {
+            av_log_missing_feature(s->avctx, "Encoding frames with 4096 macroblocks or more", 0);
+            return AVERROR(ENOSYS);
+        }
         put_bits(&s->pb, 6, 0); /* mb_x */
         put_bits(&s->pb, 6, 0); /* mb_y */
         put_bits(&s->pb, 12, s->mb_width * s->mb_height);
     }
 
     put_bits(&s->pb, 3, 0);     /* ignored */
+    return 0;
 }
 
 FF_MPV_GENERIC_CLASS(rv10)