use coded_width and coded_height instead of width and height

Originally committed as revision 6769 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/vp56.c

@@ -462,16 +462,16 @@ static int vp56_size_changed(AVCodecContext *avctx, vp56_context_t *s)
     int stride = s->frames[VP56_FRAME_CURRENT].linesize[0];
     int i;
 
-    s->plane_width[0] = s->avctx->width;
-    s->plane_width[1] = s->plane_width[2] = s->avctx->width/2;
-    s->plane_height[0] = s->avctx->height;
-    s->plane_height[1] = s->plane_height[2] = s->avctx->height/2;
+    s->plane_width[0] = s->avctx->coded_width;
+    s->plane_width[1] = s->plane_width[2] = s->avctx->coded_width/2;
+    s->plane_height[0] = s->avctx->coded_height;
+    s->plane_height[1] = s->plane_height[2] = s->avctx->coded_height/2;
 
     for (i=0; i<3; i++)
         s->stride[i] = s->flip * s->frames[VP56_FRAME_CURRENT].linesize[i];
 
-    s->mb_width = (s->avctx->width+15) / 16;
-    s->mb_height = (s->avctx->height+15) / 16;
+    s->mb_width = (s->avctx->coded_width+15) / 16;
+    s->mb_height = (s->avctx->coded_height+15) / 16;
 
     if (s->mb_width > 1000 || s->mb_height > 1000) {
         av_log(avctx, AV_LOG_ERROR, "picture too big\n");