swscale: K&R formatting cosmetics for PowerPC code (part I/II)

1 files changed, 88 insertions, 85 deletions

diff --git a/libswscale/ppc/yuv2yuv_altivec.c b/libswscale/ppc/yuv2yuv_altivec.c
index 4cd02ffe1d..45d766bd02 100644
--- a/libswscale/ppc/yuv2yuv_altivec.c
+++ b/libswscale/ppc/yuv2yuv_altivec.c
@@ -22,55 +22,57 @@
  */
 
 #include <inttypes.h>
+
 #include "config.h"
 #include "libswscale/swscale.h"
 #include "libswscale/swscale_internal.h"
 #include "libavutil/cpu.h"
 
-static int yv12toyuy2_unscaled_altivec(SwsContext *c, const uint8_t* src[],
+static int yv12toyuy2_unscaled_altivec(SwsContext *c, const uint8_t *src[],
                                        int srcStride[], int srcSliceY,
-                                       int srcSliceH, uint8_t* dstParam[],
+                                       int srcSliceH, uint8_t *dstParam[],
                                        int dstStride_a[])
 {
-    uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY;
-    // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
-    const uint8_t *ysrc = src[0];
-    const uint8_t *usrc = src[1];
-    const uint8_t *vsrc = src[2];
-    const int width = c->srcW;
-    const int height = srcSliceH;
-    const int lumStride = srcStride[0];
+    uint8_t *dst = dstParam[0] + dstStride_a[0] * srcSliceY;
+    // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH,
+    //            srcStride[0], srcStride[1], dstStride[0]);
+    const uint8_t *ysrc   = src[0];
+    const uint8_t *usrc   = src[1];
+    const uint8_t *vsrc   = src[2];
+    const int width       = c->srcW;
+    const int height      = srcSliceH;
+    const int lumStride   = srcStride[0];
     const int chromStride = srcStride[1];
-    const int dstStride = dstStride_a[0];
+    const int dstStride   = dstStride_a[0];
     const vector unsigned char yperm = vec_lvsl(0, ysrc);
-    const int vertLumPerChroma = 2;
+    const int vertLumPerChroma       = 2;
     register unsigned int y;
 
     /* This code assumes:
+     *
+     * 1) dst is 16 bytes-aligned
+     * 2) dstStride is a multiple of 16
+     * 3) width is a multiple of 16
+     * 4) lum & chrom stride are multiples of 8
+     */
 
-    1) dst is 16 bytes-aligned
-    2) dstStride is a multiple of 16
-    3) width is a multiple of 16
-    4) lum & chrom stride are multiples of 8
-    */
-
-    for (y=0; y<height; y++) {
+    for (y = 0; y < height; y++) {
         int i;
-        for (i = 0; i < width - 31; i+= 32) {
-            const unsigned int j = i >> 1;
-            vector unsigned char v_yA = vec_ld(i, ysrc);
-            vector unsigned char v_yB = vec_ld(i + 16, ysrc);
-            vector unsigned char v_yC = vec_ld(i + 32, ysrc);
-            vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm);
-            vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm);
-            vector unsigned char v_uA = vec_ld(j, usrc);
-            vector unsigned char v_uB = vec_ld(j + 16, usrc);
-            vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
-            vector unsigned char v_vA = vec_ld(j, vsrc);
-            vector unsigned char v_vB = vec_ld(j + 16, vsrc);
-            vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
-            vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
-            vector unsigned char v_uv_b = vec_mergel(v_u, v_v);
+        for (i = 0; i < width - 31; i += 32) {
+            const unsigned int j          = i >> 1;
+            vector unsigned char v_yA     = vec_ld(i, ysrc);
+            vector unsigned char v_yB     = vec_ld(i + 16, ysrc);
+            vector unsigned char v_yC     = vec_ld(i + 32, ysrc);
+            vector unsigned char v_y1     = vec_perm(v_yA, v_yB, yperm);
+            vector unsigned char v_y2     = vec_perm(v_yB, v_yC, yperm);
+            vector unsigned char v_uA     = vec_ld(j, usrc);
+            vector unsigned char v_uB     = vec_ld(j + 16, usrc);
+            vector unsigned char v_u      = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
+            vector unsigned char v_vA     = vec_ld(j, vsrc);
+            vector unsigned char v_vB     = vec_ld(j + 16, vsrc);
+            vector unsigned char v_v      = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
+            vector unsigned char v_uv_a   = vec_mergeh(v_u, v_v);
+            vector unsigned char v_uv_b   = vec_mergel(v_u, v_v);
             vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
             vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
             vector unsigned char v_yuy2_2 = vec_mergeh(v_y2, v_uv_b);
@@ -81,71 +83,72 @@ static int yv12toyuy2_unscaled_altivec(SwsContext *c, const uint8_t* src[],
             vec_st(v_yuy2_3, (i << 1) + 48, dst);
         }
         if (i < width) {
-            const unsigned int j = i >> 1;
-            vector unsigned char v_y1 = vec_ld(i, ysrc);
-            vector unsigned char v_u = vec_ld(j, usrc);
-            vector unsigned char v_v = vec_ld(j, vsrc);
-            vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
+            const unsigned int j          = i >> 1;
+            vector unsigned char v_y1     = vec_ld(i, ysrc);
+            vector unsigned char v_u      = vec_ld(j, usrc);
+            vector unsigned char v_v      = vec_ld(j, vsrc);
+            vector unsigned char v_uv_a   = vec_mergeh(v_u, v_v);
             vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
             vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
             vec_st(v_yuy2_0, (i << 1), dst);
             vec_st(v_yuy2_1, (i << 1) + 16, dst);
         }
-        if ((y&(vertLumPerChroma-1)) == vertLumPerChroma-1) {
+        if ((y & (vertLumPerChroma - 1)) == vertLumPerChroma - 1) {
             usrc += chromStride;
             vsrc += chromStride;
         }
         ysrc += lumStride;
-        dst += dstStride;
+        dst  += dstStride;
     }
 
     return srcSliceH;
 }
 
-static int yv12touyvy_unscaled_altivec(SwsContext *c, const uint8_t* src[],
+static int yv12touyvy_unscaled_altivec(SwsContext *c, const uint8_t *src[],
                                        int srcStride[], int srcSliceY,
-                                       int srcSliceH, uint8_t* dstParam[],
+                                       int srcSliceH, uint8_t *dstParam[],
                                        int dstStride_a[])
 {
-    uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY;
-    // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
-    const uint8_t *ysrc = src[0];
-    const uint8_t *usrc = src[1];
-    const uint8_t *vsrc = src[2];
-    const int width = c->srcW;
-    const int height = srcSliceH;
-    const int lumStride = srcStride[0];
-    const int chromStride = srcStride[1];
-    const int dstStride = dstStride_a[0];
-    const int vertLumPerChroma = 2;
+    uint8_t *dst = dstParam[0] + dstStride_a[0] * srcSliceY;
+    // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH,
+    //            srcStride[0], srcStride[1], dstStride[0]);
+    const uint8_t *ysrc              = src[0];
+    const uint8_t *usrc              = src[1];
+    const uint8_t *vsrc              = src[2];
+    const int width                  = c->srcW;
+    const int height                 = srcSliceH;
+    const int lumStride              = srcStride[0];
+    const int chromStride            = srcStride[1];
+    const int dstStride              = dstStride_a[0];
+    const int vertLumPerChroma       = 2;
     const vector unsigned char yperm = vec_lvsl(0, ysrc);
     register unsigned int y;
 
     /* This code assumes:
+     *
+     * 1) dst is 16 bytes-aligned
+     * 2) dstStride is a multiple of 16
+     * 3) width is a multiple of 16
+     * 4) lum & chrom stride are multiples of 8
+     */
 
-    1) dst is 16 bytes-aligned
-    2) dstStride is a multiple of 16
-    3) width is a multiple of 16
-    4) lum & chrom stride are multiples of 8
-    */
-
-    for (y=0; y<height; y++) {
+    for (y = 0; y < height; y++) {
         int i;
-        for (i = 0; i < width - 31; i+= 32) {
-            const unsigned int j = i >> 1;
-            vector unsigned char v_yA = vec_ld(i, ysrc);
-            vector unsigned char v_yB = vec_ld(i + 16, ysrc);
-            vector unsigned char v_yC = vec_ld(i + 32, ysrc);
-            vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm);
-            vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm);
-            vector unsigned char v_uA = vec_ld(j, usrc);
-            vector unsigned char v_uB = vec_ld(j + 16, usrc);
-            vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
-            vector unsigned char v_vA = vec_ld(j, vsrc);
-            vector unsigned char v_vB = vec_ld(j + 16, vsrc);
-            vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
-            vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
-            vector unsigned char v_uv_b = vec_mergel(v_u, v_v);
+        for (i = 0; i < width - 31; i += 32) {
+            const unsigned int j          = i >> 1;
+            vector unsigned char v_yA     = vec_ld(i, ysrc);
+            vector unsigned char v_yB     = vec_ld(i + 16, ysrc);
+            vector unsigned char v_yC     = vec_ld(i + 32, ysrc);
+            vector unsigned char v_y1     = vec_perm(v_yA, v_yB, yperm);
+            vector unsigned char v_y2     = vec_perm(v_yB, v_yC, yperm);
+            vector unsigned char v_uA     = vec_ld(j, usrc);
+            vector unsigned char v_uB     = vec_ld(j + 16, usrc);
+            vector unsigned char v_u      = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
+            vector unsigned char v_vA     = vec_ld(j, vsrc);
+            vector unsigned char v_vB     = vec_ld(j + 16, vsrc);
+            vector unsigned char v_v      = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
+            vector unsigned char v_uv_a   = vec_mergeh(v_u, v_v);
+            vector unsigned char v_uv_b   = vec_mergel(v_u, v_v);
             vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
             vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
             vector unsigned char v_uyvy_2 = vec_mergeh(v_uv_b, v_y2);
@@ -156,22 +159,22 @@ static int yv12touyvy_unscaled_altivec(SwsContext *c, const uint8_t* src[],
             vec_st(v_uyvy_3, (i << 1) + 48, dst);
         }
         if (i < width) {
-            const unsigned int j = i >> 1;
-            vector unsigned char v_y1 = vec_ld(i, ysrc);
-            vector unsigned char v_u = vec_ld(j, usrc);
-            vector unsigned char v_v = vec_ld(j, vsrc);
-            vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
+            const unsigned int j          = i >> 1;
+            vector unsigned char v_y1     = vec_ld(i, ysrc);
+            vector unsigned char v_u      = vec_ld(j, usrc);
+            vector unsigned char v_v      = vec_ld(j, vsrc);
+            vector unsigned char v_uv_a   = vec_mergeh(v_u, v_v);
             vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
             vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
             vec_st(v_uyvy_0, (i << 1), dst);
             vec_st(v_uyvy_1, (i << 1) + 16, dst);
         }
-        if ((y&(vertLumPerChroma-1)) == vertLumPerChroma-1) {
+        if ((y & (vertLumPerChroma - 1)) == vertLumPerChroma - 1) {
             usrc += chromStride;
             vsrc += chromStride;
         }
         ysrc += lumStride;
-        dst += dstStride;
+        dst  += dstStride;
     }
     return srcSliceH;
 }
@@ -184,8 +187,8 @@ void ff_swscale_get_unscaled_altivec(SwsContext *c)
 
         // unscaled YV12 -> packed YUV, we want speed
         if (dstFormat == PIX_FMT_YUYV422)
-            c->swScale= yv12toyuy2_unscaled_altivec;
+            c->swScale = yv12toyuy2_unscaled_altivec;
         else if (dstFormat == PIX_FMT_UYVY422)
-            c->swScale= yv12touyvy_unscaled_altivec;
+            c->swScale = yv12touyvy_unscaled_altivec;
     }
 }