svq1 mv array size fix

Originally committed as revision 3361 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/svq1.c

@@ -1108,10 +1108,10 @@ static void svq1_encode_plane(SVQ1Context *s, int plane, unsigned char *src_plan
         s->m.me_method= s->avctx->me_method;
         
         if(!s->motion_val8[plane]){
-            s->motion_val8 [plane]= av_mallocz(s->m.b8_stride*block_height*2*2*sizeof(int16_t));
-            s->motion_val16[plane]= av_mallocz(s->m.mb_stride*block_height*2*sizeof(int16_t));
+            s->motion_val8 [plane]= av_mallocz((s->m.b8_stride*block_height*2 + 2)*2*sizeof(int16_t));
+            s->motion_val16[plane]= av_mallocz((s->m.mb_stride*(block_height + 2) + 1)*2*sizeof(int16_t));
         }
-        
+
         s->m.mb_type= s->mb_type;
         
         //dummies, to avoid segfaults
@@ -1120,8 +1120,8 @@ static void svq1_encode_plane(SVQ1Context *s, int plane, unsigned char *src_plan
         s->m.current_picture.mc_mb_var= (uint16_t*)s->dummy;
         s->m.current_picture.mb_type= s->dummy;
         
-        s->m.current_picture.motion_val[0]= s->motion_val8[plane];
-        s->m.p_mv_table= s->motion_val16[plane];
+        s->m.current_picture.motion_val[0]= s->motion_val8[plane] + 2;
+        s->m.p_mv_table= s->motion_val16[plane] + s->m.mb_stride + 1;
         s->m.dsp= s->dsp; //move
         ff_init_me(&s->m);
     

tests/ffmpeg.regression.ref

@@ -107,10 +107,10 @@ stddev:  8.08 PSNR:29.97 bytes:7602176
 2653690 ./data/a-ffv1.avi
 799d3db687f6cdd7a837ec156efc171f *./data/out.yuv
 stddev:  0.00 PSNR:99.99 bytes:7602176
-9ebbef45611d99d4134c1dac04c88378 *./data/a-svq1.mov
-1384015 ./data/a-svq1.mov
-f14dcf0f15be154c1384086c3d0e8a13 *./data/out.yuv
-stddev: 10.98 PSNR:27.30 bytes:7602176
+c672f70e2176a897b1ba816749574751 *./data/a-svq1.mov
+1384019 ./data/a-svq1.mov
+ccc201054669e94717022bb4f2aea4ce *./data/out.yuv
+stddev: 10.99 PSNR:27.30 bytes:7602176
 21f8ff9f1daacd9133683bb4ea0f50a4 *./data/a-mp2.mp2
 95712 ./data/a-mp2.mp2
 624d9789f3ac193bbae4af3bd8cb02b7 *./data/out.wav