Merge remote-tracking branch 'qatar/master'

[ffmpeg] / libavcodec / h264pred_template.c

diff --git a/libavcodec/h264pred_template.c b/libavcodec/h264pred_template.c
index 1c1fe0bc31c3963e97ee954740dc34c77143c65e..3cd4463d76b46b68f4e3a5d3c3f63af4df54023a 100644 (file)
--- a/libavcodec/h264pred_template.c
+++ b/libavcodec/h264pred_template.c
@@ -2,20 +2,20 @@
  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
  * Copyright (c) 2003-2011 Michael Niedermayer <michaelni@gmx.at>
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -30,7 +30,7 @@
 
 static void FUNCC(pred4x4_vertical)(uint8_t *_src, const uint8_t *topright, int _stride){
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     const pixel4 a= AV_RN4PA(src-stride);
 
     AV_WN4PA(src+0*stride, a);
@@ -41,7 +41,7 @@ static void FUNCC(pred4x4_vertical)(uint8_t *_src, const uint8_t *topright, int
 
 static void FUNCC(pred4x4_horizontal)(uint8_t *_src, const uint8_t *topright, int _stride){
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     AV_WN4PA(src+0*stride, PIXEL_SPLAT_X4(src[-1+0*stride]));
     AV_WN4PA(src+1*stride, PIXEL_SPLAT_X4(src[-1+1*stride]));
     AV_WN4PA(src+2*stride, PIXEL_SPLAT_X4(src[-1+2*stride]));
@@ -50,7 +50,7 @@ static void FUNCC(pred4x4_horizontal)(uint8_t *_src, const uint8_t *topright, in
 
 static void FUNCC(pred4x4_dc)(uint8_t *_src, const uint8_t *topright, int _stride){
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     const int dc= (  src[-stride] + src[1-stride] + src[2-stride] + src[3-stride]
                    + src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 4) >>3;
     const pixel4 a = PIXEL_SPLAT_X4(dc);
@@ -63,7 +63,7 @@ static void FUNCC(pred4x4_dc)(uint8_t *_src, const uint8_t *topright, int _strid
 
 static void FUNCC(pred4x4_left_dc)(uint8_t *_src, const uint8_t *topright, int _stride){
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     const int dc= (  src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 2) >>2;
     const pixel4 a = PIXEL_SPLAT_X4(dc);
 
@@ -75,7 +75,7 @@ static void FUNCC(pred4x4_left_dc)(uint8_t *_src, const uint8_t *topright, int _
 
 static void FUNCC(pred4x4_top_dc)(uint8_t *_src, const uint8_t *topright, int _stride){
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     const int dc= (  src[-stride] + src[1-stride] + src[2-stride] + src[3-stride] + 2) >>2;
     const pixel4 a = PIXEL_SPLAT_X4(dc);
 
@@ -87,7 +87,7 @@ static void FUNCC(pred4x4_top_dc)(uint8_t *_src, const uint8_t *topright, int _s
 
 static void FUNCC(pred4x4_128_dc)(uint8_t *_src, const uint8_t *topright, int _stride){
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     const pixel4 a = PIXEL_SPLAT_X4(1<<(BIT_DEPTH-1));
 
     AV_WN4PA(src+0*stride, a);
@@ -98,7 +98,7 @@ static void FUNCC(pred4x4_128_dc)(uint8_t *_src, const uint8_t *topright, int _s
 
 static void FUNCC(pred4x4_127_dc)(uint8_t *_src, const uint8_t *topright, int _stride){
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     const pixel4 a = PIXEL_SPLAT_X4((1<<(BIT_DEPTH-1))-1);
 
     AV_WN4PA(src+0*stride, a);
@@ -109,7 +109,7 @@ static void FUNCC(pred4x4_127_dc)(uint8_t *_src, const uint8_t *topright, int _s
 
 static void FUNCC(pred4x4_129_dc)(uint8_t *_src, const uint8_t *topright, int _stride){
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     const pixel4 a = PIXEL_SPLAT_X4((1<<(BIT_DEPTH-1))+1);
 
     AV_WN4PA(src+0*stride, a);
@@ -145,7 +145,7 @@ static void FUNCC(pred4x4_129_dc)(uint8_t *_src, const uint8_t *topright, int _s
 
 static void FUNCC(pred4x4_down_right)(uint8_t *_src, const uint8_t *topright, int _stride){
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     const int lt= src[-1-1*stride];
     LOAD_TOP_EDGE
     LOAD_LEFT_EDGE
@@ -171,7 +171,7 @@ static void FUNCC(pred4x4_down_right)(uint8_t *_src, const uint8_t *topright, in
 static void FUNCC(pred4x4_down_left)(uint8_t *_src, const uint8_t *_topright, int _stride){
     pixel *src = (pixel*)_src;
     const pixel *topright = (const pixel*)_topright;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     LOAD_TOP_EDGE
     LOAD_TOP_RIGHT_EDGE
 //    LOAD_LEFT_EDGE
@@ -196,7 +196,7 @@ static void FUNCC(pred4x4_down_left)(uint8_t *_src, const uint8_t *_topright, in
 
 static void FUNCC(pred4x4_vertical_right)(uint8_t *_src, const uint8_t *topright, int _stride){
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     const int lt= src[-1-1*stride];
     LOAD_TOP_EDGE
     LOAD_LEFT_EDGE
@@ -222,7 +222,7 @@ static void FUNCC(pred4x4_vertical_right)(uint8_t *_src, const uint8_t *topright
 static void FUNCC(pred4x4_vertical_left)(uint8_t *_src, const uint8_t *_topright, int _stride){
     pixel *src = (pixel*)_src;
     const pixel *topright = (const pixel*)_topright;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     LOAD_TOP_EDGE
     LOAD_TOP_RIGHT_EDGE
 
@@ -246,7 +246,7 @@ static void FUNCC(pred4x4_vertical_left)(uint8_t *_src, const uint8_t *_topright
 
 static void FUNCC(pred4x4_horizontal_up)(uint8_t *_src, const uint8_t *topright, int _stride){
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     LOAD_LEFT_EDGE
 
     src[0+0*stride]=(l0 + l1 + 1)>>1;
@@ -269,7 +269,7 @@ static void FUNCC(pred4x4_horizontal_up)(uint8_t *_src, const uint8_t *topright,
 
 static void FUNCC(pred4x4_horizontal_down)(uint8_t *_src, const uint8_t *topright, int _stride){
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     const int lt= src[-1-1*stride];
     LOAD_TOP_EDGE
     LOAD_LEFT_EDGE
@@ -295,7 +295,7 @@ static void FUNCC(pred4x4_horizontal_down)(uint8_t *_src, const uint8_t *toprigh
 static void FUNCC(pred16x16_vertical)(uint8_t *_src, int _stride){
     int i;
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     const pixel4 a = AV_RN4PA(((pixel4*)(src-stride))+0);
     const pixel4 b = AV_RN4PA(((pixel4*)(src-stride))+1);
     const pixel4 c = AV_RN4PA(((pixel4*)(src-stride))+2);
@@ -312,7 +312,7 @@ static void FUNCC(pred16x16_vertical)(uint8_t *_src, int _stride){
 static void FUNCC(pred16x16_horizontal)(uint8_t *_src, int stride){
     int i;
     pixel *src = (pixel*)_src;
-    stride /= sizeof(pixel);
+    stride >>= sizeof(pixel)-1;
 
     for(i=0; i<16; i++){
         const pixel4 a = PIXEL_SPLAT_X4(src[-1+i*stride]);
@@ -337,7 +337,7 @@ static void FUNCC(pred16x16_dc)(uint8_t *_src, int stride){
     int i, dc=0;
     pixel *src = (pixel*)_src;
     pixel4 dcsplat;
-    stride /= sizeof(pixel);
+    stride >>= sizeof(pixel)-1;
 
     for(i=0;i<16; i++){
         dc+= src[-1+i*stride];
@@ -355,7 +355,7 @@ static void FUNCC(pred16x16_left_dc)(uint8_t *_src, int stride){
     int i, dc=0;
     pixel *src = (pixel*)_src;
     pixel4 dcsplat;
-    stride /= sizeof(pixel);
+    stride >>= sizeof(pixel)-1;
 
     for(i=0;i<16; i++){
         dc+= src[-1+i*stride];
@@ -369,7 +369,7 @@ static void FUNCC(pred16x16_top_dc)(uint8_t *_src, int stride){
     int i, dc=0;
     pixel *src = (pixel*)_src;
     pixel4 dcsplat;
-    stride /= sizeof(pixel);
+    stride >>= sizeof(pixel)-1;
 
     for(i=0;i<16; i++){
         dc+= src[i-stride];
@@ -383,7 +383,7 @@ static void FUNCC(pred16x16_top_dc)(uint8_t *_src, int stride){
 static void FUNCC(pred16x16_##n##_dc)(uint8_t *_src, int stride){\
     int i;\
     pixel *src = (pixel*)_src;\
-    stride /= sizeof(pixel);\
+    stride >>= sizeof(pixel)-1;\
     PREDICT_16x16_DC(PIXEL_SPLAT_X4(v));\
 }
 
@@ -391,12 +391,12 @@ PRED16x16_X(127, (1<<(BIT_DEPTH-1))-1);
 PRED16x16_X(128, (1<<(BIT_DEPTH-1))+0);
 PRED16x16_X(129, (1<<(BIT_DEPTH-1))+1);
 
-static inline void FUNCC(pred16x16_plane_compat)(uint8_t *_src, int _stride, const int svq3, const int rv40){
+static inline void FUNCC(pred16x16_plane_compat)(uint8_t *p_src, int p_stride, const int svq3, const int rv40){
   int i, j, k;
   int a;
   INIT_CLIP
-  pixel *src = (pixel*)_src;
-  int stride = _stride/sizeof(pixel);
+  pixel *src = (pixel*)p_src;
+  int stride = p_stride>>(sizeof(pixel)-1);
   const pixel * const src0 = src +7-stride;
   const pixel *       src1 = src +8*stride-1;
   const pixel *       src2 = src1-2*stride;    // == src+6*stride-1;
@@ -443,7 +443,7 @@ static void FUNCC(pred16x16_plane)(uint8_t *src, int stride){
 static void FUNCC(pred8x8_vertical)(uint8_t *_src, int _stride){
     int i;
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     const pixel4 a= AV_RN4PA(((pixel4*)(src-stride))+0);
     const pixel4 b= AV_RN4PA(((pixel4*)(src-stride))+1);
 
@@ -456,7 +456,7 @@ static void FUNCC(pred8x8_vertical)(uint8_t *_src, int _stride){
 static void FUNCC(pred8x8_horizontal)(uint8_t *_src, int stride){
     int i;
     pixel *src = (pixel*)_src;
-    stride /= sizeof(pixel);
+    stride >>= sizeof(pixel)-1;
 
     for(i=0; i<8; i++){
         const pixel4 a = PIXEL_SPLAT_X4(src[-1+i*stride]);
@@ -470,7 +470,7 @@ static void FUNCC(pred8x8_##n##_dc)(uint8_t *_src, int stride){\
     int i;\
     const pixel4 a = PIXEL_SPLAT_X4(v);\
     pixel *src = (pixel*)_src;\
-    stride /= sizeof(pixel);\
+    stride >>= sizeof(pixel)-1;\
     for(i=0; i<8; i++){\
         AV_WN4PA(((pixel4*)(src+i*stride))+0, a);\
         AV_WN4PA(((pixel4*)(src+i*stride))+1, a);\
@@ -486,7 +486,7 @@ static void FUNCC(pred8x8_left_dc)(uint8_t *_src, int stride){
     int dc0, dc2;
     pixel4 dc0splat, dc2splat;
     pixel *src = (pixel*)_src;
-    stride /= sizeof(pixel);
+    stride >>= sizeof(pixel)-1;
 
     dc0=dc2=0;
     for(i=0;i<4; i++){
@@ -511,7 +511,7 @@ static void FUNCC(pred8x8_top_dc)(uint8_t *_src, int stride){
     int dc0, dc1;
     pixel4 dc0splat, dc1splat;
     pixel *src = (pixel*)_src;
-    stride /= sizeof(pixel);
+    stride >>= sizeof(pixel)-1;
 
     dc0=dc1=0;
     for(i=0;i<4; i++){
@@ -536,7 +536,7 @@ static void FUNCC(pred8x8_dc)(uint8_t *_src, int stride){
     int dc0, dc1, dc2;
     pixel4 dc0splat, dc1splat, dc2splat, dc3splat;
     pixel *src = (pixel*)_src;
-    stride /= sizeof(pixel);
+    stride >>= sizeof(pixel)-1;
 
     dc0=dc1=dc2=0;
     for(i=0;i<4; i++){
@@ -587,7 +587,7 @@ static void FUNCC(pred8x8_plane)(uint8_t *_src, int _stride){
   int a;
   INIT_CLIP
   pixel *src = (pixel*)_src;
-  int stride = _stride/sizeof(pixel);
+  int stride = _stride>>(sizeof(pixel)-1);
   const pixel * const src0 = src +3-stride;
   const pixel *       src1 = src +4*stride-1;
   const pixel *       src2 = src1-2*stride;    // == src+2*stride-1;
@@ -658,32 +658,32 @@ static void FUNCC(pred8x8_plane)(uint8_t *_src, int _stride){
 static void FUNCC(pred8x8l_128_dc)(uint8_t *_src, int has_topleft, int has_topright, int _stride)
 {
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
 
     PREDICT_8x8_DC(PIXEL_SPLAT_X4(1<<(BIT_DEPTH-1)));
 }
 static void FUNCC(pred8x8l_left_dc)(uint8_t *_src, int has_topleft, int has_topright, int _stride)
 {
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
 
     PREDICT_8x8_LOAD_LEFT;
     const pixel4 dc = PIXEL_SPLAT_X4((l0+l1+l2+l3+l4+l5+l6+l7+4) >> 3);
     PREDICT_8x8_DC(dc);
 }
-static void FUNCC(pred8x8l_top_dc)(uint8_t *_src, int has_topleft, int has_topright, int _stride)
+static void FUNCC(pred8x8l_top_dc)(uint8_t *p_src, int has_topleft, int has_topright, int p_stride)
 {
-    pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    pixel *src = (pixel*)p_src;
+    int stride = p_stride>>(sizeof(pixel)-1);
 
     PREDICT_8x8_LOAD_TOP;
     const pixel4 dc = PIXEL_SPLAT_X4((t0+t1+t2+t3+t4+t5+t6+t7+4) >> 3);
     PREDICT_8x8_DC(dc);
 }
-static void FUNCC(pred8x8l_dc)(uint8_t *_src, int has_topleft, int has_topright, int _stride)
+static void FUNCC(pred8x8l_dc)(uint8_t *p_src, int has_topleft, int has_topright, int p_stride)
 {
-    pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    pixel *src = (pixel*)p_src;
+    int stride = p_stride>>(sizeof(pixel)-1);
 
     PREDICT_8x8_LOAD_LEFT;
     PREDICT_8x8_LOAD_TOP;
@@ -691,10 +691,10 @@ static void FUNCC(pred8x8l_dc)(uint8_t *_src, int has_topleft, int has_topright,
                                      +t0+t1+t2+t3+t4+t5+t6+t7+8) >> 4);
     PREDICT_8x8_DC(dc);
 }
-static void FUNCC(pred8x8l_horizontal)(uint8_t *_src, int has_topleft, int has_topright, int _stride)
+static void FUNCC(pred8x8l_horizontal)(uint8_t *p_src, int has_topleft, int has_topright, int p_stride)
 {
-    pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    pixel *src = (pixel*)p_src;
+    int stride = p_stride>>(sizeof(pixel)-1);
     pixel4 a;
 
     PREDICT_8x8_LOAD_LEFT;
@@ -708,7 +708,7 @@ static void FUNCC(pred8x8l_vertical)(uint8_t *_src, int has_topleft, int has_top
 {
     int y;
     pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    int stride = _stride>>(sizeof(pixel)-1);
     pixel4 a, b;
 
     PREDICT_8x8_LOAD_TOP;
@@ -727,10 +727,10 @@ static void FUNCC(pred8x8l_vertical)(uint8_t *_src, int has_topleft, int has_top
         AV_WN4PA(((pixel4*)(src+y*stride))+1, b);
     }
 }
-static void FUNCC(pred8x8l_down_left)(uint8_t *_src, int has_topleft, int has_topright, int _stride)
+static void FUNCC(pred8x8l_down_left)(uint8_t *p_src, int has_topleft, int has_topright, int p_stride)
 {
-    pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    pixel *src = (pixel*)p_src;
+    int stride = p_stride>>(sizeof(pixel)-1);
     PREDICT_8x8_LOAD_TOP;
     PREDICT_8x8_LOAD_TOPRIGHT;
     SRC(0,0)= (t0 + 2*t1 + t2 + 2) >> 2;
@@ -749,10 +749,10 @@ static void FUNCC(pred8x8l_down_left)(uint8_t *_src, int has_topleft, int has_to
     SRC(6,7)=SRC(7,6)= (t13 + 2*t14 + t15 + 2) >> 2;
     SRC(7,7)= (t14 + 3*t15 + 2) >> 2;
 }
-static void FUNCC(pred8x8l_down_right)(uint8_t *_src, int has_topleft, int has_topright, int _stride)
+static void FUNCC(pred8x8l_down_right)(uint8_t *p_src, int has_topleft, int has_topright, int p_stride)
 {
-    pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    pixel *src = (pixel*)p_src;
+    int stride = p_stride>>(sizeof(pixel)-1);
     PREDICT_8x8_LOAD_TOP;
     PREDICT_8x8_LOAD_LEFT;
     PREDICT_8x8_LOAD_TOPLEFT;
@@ -772,10 +772,10 @@ static void FUNCC(pred8x8l_down_right)(uint8_t *_src, int has_topleft, int has_t
     SRC(6,0)=SRC(7,1)= (t4 + 2*t5 + t6 + 2) >> 2;
     SRC(7,0)= (t5 + 2*t6 + t7 + 2) >> 2;
 }
-static void FUNCC(pred8x8l_vertical_right)(uint8_t *_src, int has_topleft, int has_topright, int _stride)
+static void FUNCC(pred8x8l_vertical_right)(uint8_t *p_src, int has_topleft, int has_topright, int p_stride)
 {
-    pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    pixel *src = (pixel*)p_src;
+    int stride = p_stride>>(sizeof(pixel)-1);
     PREDICT_8x8_LOAD_TOP;
     PREDICT_8x8_LOAD_LEFT;
     PREDICT_8x8_LOAD_TOPLEFT;
@@ -802,10 +802,10 @@ static void FUNCC(pred8x8l_vertical_right)(uint8_t *_src, int has_topleft, int h
     SRC(7,1)= (t5 + 2*t6 + t7 + 2) >> 2;
     SRC(7,0)= (t6 + t7 + 1) >> 1;
 }
-static void FUNCC(pred8x8l_horizontal_down)(uint8_t *_src, int has_topleft, int has_topright, int _stride)
+static void FUNCC(pred8x8l_horizontal_down)(uint8_t *p_src, int has_topleft, int has_topright, int p_stride)
 {
-    pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    pixel *src = (pixel*)p_src;
+    int stride = p_stride>>(sizeof(pixel)-1);
     PREDICT_8x8_LOAD_TOP;
     PREDICT_8x8_LOAD_LEFT;
     PREDICT_8x8_LOAD_TOPLEFT;
@@ -832,10 +832,10 @@ static void FUNCC(pred8x8l_horizontal_down)(uint8_t *_src, int has_topleft, int
     SRC(6,0)= (t5 + 2*t4 + t3 + 2) >> 2;
     SRC(7,0)= (t6 + 2*t5 + t4 + 2) >> 2;
 }
-static void FUNCC(pred8x8l_vertical_left)(uint8_t *_src, int has_topleft, int has_topright, int _stride)
+static void FUNCC(pred8x8l_vertical_left)(uint8_t *p_src, int has_topleft, int has_topright, int p_stride)
 {
-    pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    pixel *src = (pixel*)p_src;
+    int stride = p_stride>>(sizeof(pixel)-1);
     PREDICT_8x8_LOAD_TOP;
     PREDICT_8x8_LOAD_TOPRIGHT;
     SRC(0,0)= (t0 + t1 + 1) >> 1;
@@ -861,10 +861,10 @@ static void FUNCC(pred8x8l_vertical_left)(uint8_t *_src, int has_topleft, int ha
     SRC(7,6)= (t10 + t11 + 1) >> 1;
     SRC(7,7)= (t10 + 2*t11 + t12 + 2) >> 2;
 }
-static void FUNCC(pred8x8l_horizontal_up)(uint8_t *_src, int has_topleft, int has_topright, int _stride)
+static void FUNCC(pred8x8l_horizontal_up)(uint8_t *p_src, int has_topleft, int has_topright, int p_stride)
 {
-    pixel *src = (pixel*)_src;
-    int stride = _stride/sizeof(pixel);
+    pixel *src = (pixel*)p_src;
+    int stride = p_stride>>(sizeof(pixel)-1);
     PREDICT_8x8_LOAD_LEFT;
     SRC(0,0)= (l0 + l1 + 1) >> 1;
     SRC(1,0)= (l0 + 2*l1 + l2 + 2) >> 2;
@@ -895,11 +895,11 @@ static void FUNCC(pred8x8l_horizontal_up)(uint8_t *_src, int has_topleft, int ha
 #undef PL
 #undef SRC
 
-static void FUNCC(pred4x4_vertical_add)(uint8_t *_pix, const DCTELEM *_block, int stride){
+static void FUNCC(pred4x4_vertical_add)(uint8_t *p_pix, const DCTELEM *p_block, int stride){
     int i;
-    pixel *pix = (pixel*)_pix;
-    const dctcoef *block = (const dctcoef*)_block;
-    stride /= sizeof(pixel);
+    pixel *pix = (pixel*)p_pix;
+    const dctcoef *block = (const dctcoef*)p_block;
+    stride >>= sizeof(pixel)-1;
     pix -= stride;
     for(i=0; i<4; i++){
         pixel v = pix[0];
@@ -912,11 +912,11 @@ static void FUNCC(pred4x4_vertical_add)(uint8_t *_pix, const DCTELEM *_block, in
     }
 }
 
-static void FUNCC(pred4x4_horizontal_add)(uint8_t *_pix, const DCTELEM *_block, int stride){
+static void FUNCC(pred4x4_horizontal_add)(uint8_t *p_pix, const DCTELEM *p_block, int stride){
     int i;
-    pixel *pix = (pixel*)_pix;
-    const dctcoef *block = (const dctcoef*)_block;
-    stride /= sizeof(pixel);
+    pixel *pix = (pixel*)p_pix;
+    const dctcoef *block = (const dctcoef*)p_block;
+    stride >>= sizeof(pixel)-1;
     for(i=0; i<4; i++){
         pixel v = pix[-1];
         pix[0]= v += block[0];
@@ -928,11 +928,11 @@ static void FUNCC(pred4x4_horizontal_add)(uint8_t *_pix, const DCTELEM *_block,
     }
 }
 
-static void FUNCC(pred8x8l_vertical_add)(uint8_t *_pix, const DCTELEM *_block, int stride){
+static void FUNCC(pred8x8l_vertical_add)(uint8_t *p_pix, const DCTELEM *p_block, int stride){
     int i;
-    pixel *pix = (pixel*)_pix;
-    const dctcoef *block = (const dctcoef*)_block;
-    stride /= sizeof(pixel);
+    pixel *pix = (pixel*)p_pix;
+    const dctcoef *block = (const dctcoef*)p_block;
+    stride >>= sizeof(pixel)-1;
     pix -= stride;
     for(i=0; i<8; i++){
         pixel v = pix[0];
@@ -949,11 +949,11 @@ static void FUNCC(pred8x8l_vertical_add)(uint8_t *_pix, const DCTELEM *_block, i
     }
 }
 
-static void FUNCC(pred8x8l_horizontal_add)(uint8_t *_pix, const DCTELEM *_block, int stride){
+static void FUNCC(pred8x8l_horizontal_add)(uint8_t *p_pix, const DCTELEM *p_block, int stride){
     int i;
-    pixel *pix = (pixel*)_pix;
-    const dctcoef *block = (const dctcoef*)_block;
-    stride /= sizeof(pixel);
+    pixel *pix = (pixel*)p_pix;
+    const dctcoef *block = (const dctcoef*)p_block;
+    stride >>= sizeof(pixel)-1;
     for(i=0; i<8; i++){
         pixel v = pix[-1];
         pix[0]= v += block[0];