swscale: remove VOF/VOFW.

libswscale/swscale_internal.h

@@ -35,14 +35,6 @@
 
 #define MAX_FILTER_SIZE 256
 
-#if ARCH_X86
-#define VOFW 5120
-#else
-#define VOFW 2048 // faster on PPC and not tested on others
-#endif
-
-#define VOF  (VOFW*2)
-
 #if HAVE_BIGENDIAN
 #define ALT32_CORR (-1)
 #else

libswscale/utils.c

@@ -749,6 +749,7 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter)
     int srcH= c->srcH;
     int dstW= c->dstW;
     int dstH= c->dstH;
+    int dst_stride = FFALIGN(dstW * sizeof(int16_t), 16), dst_stride_px = dst_stride >> 1;
     int flags, cpu_flags;
     enum PixelFormat srcFormat= c->srcFormat;
     enum PixelFormat dstFormat= c->dstFormat;
@@ -996,26 +997,24 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter)
     //Note we need at least one pixel more at the end because of the MMX code (just in case someone wanna replace the 4000/8000)
     /* align at 16 bytes for AltiVec */
     for (i=0; i<c->vLumBufSize; i++) {
-        FF_ALLOCZ_OR_GOTO(c, c->lumPixBuf[i+c->vLumBufSize], VOF+1, fail);
+        FF_ALLOCZ_OR_GOTO(c, c->lumPixBuf[i+c->vLumBufSize], dst_stride+1, fail);
         c->lumPixBuf[i] = c->lumPixBuf[i+c->vLumBufSize];
     }
-    c->uv_off = VOFW;
+    c->uv_off = dst_stride_px;
     for (i=0; i<c->vChrBufSize; i++) {
-        FF_ALLOC_OR_GOTO(c, c->chrUPixBuf[i+c->vChrBufSize], VOF*2+1, fail);
+        FF_ALLOC_OR_GOTO(c, c->chrUPixBuf[i+c->vChrBufSize], dst_stride*2+1, fail);
         c->chrUPixBuf[i] = c->chrUPixBuf[i+c->vChrBufSize];
-        c->chrVPixBuf[i] = c->chrVPixBuf[i+c->vChrBufSize] = c->chrUPixBuf[i] + VOFW;
+        c->chrVPixBuf[i] = c->chrVPixBuf[i+c->vChrBufSize] = c->chrUPixBuf[i] + dst_stride_px;
     }
     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf)
         for (i=0; i<c->vLumBufSize; i++) {
-            FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf[i+c->vLumBufSize], VOF+1, fail);
+            FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf[i+c->vLumBufSize], dst_stride+1, fail);
             c->alpPixBuf[i] = c->alpPixBuf[i+c->vLumBufSize];
         }
 
     //try to avoid drawing green stuff between the right end and the stride end
     for (i=0; i<c->vChrBufSize; i++)
-        memset(c->chrUPixBuf[i], 64, VOF*2+1);
-
-    assert(2*VOFW == VOF);
+        memset(c->chrUPixBuf[i], 64, dst_stride*2+1);
 
     assert(c->chrDstH <= dstH);