swscale: K&R formatting cosmetics for code examples

1 files changed, 91 insertions, 95 deletions

diff --git a/libswscale/swscale-test.c b/libswscale/swscale-test.c
index b5cf1d202e..7ea01a6b68 100644
--- a/libswscale/swscale-test.c
+++ b/libswscale/swscale-test.c
@@ -35,33 +35,32 @@
 
 /* HACK Duplicated from swscale_internal.h.
  * Should be removed when a cleaner pixel format system exists. */
-#define isGray(x)       (           \
-           (x)==PIX_FMT_GRAY8       \
-        || (x)==PIX_FMT_GRAY16BE    \
-        || (x)==PIX_FMT_GRAY16LE    \
-    )
-#define hasChroma(x)   (!(          \
-            isGray(x)               \
-        || (x)==PIX_FMT_MONOBLACK   \
-        || (x)==PIX_FMT_MONOWHITE   \
-    ))
-#define isALPHA(x)      (           \
-           (x)==PIX_FMT_BGR32       \
-        || (x)==PIX_FMT_BGR32_1     \
-        || (x)==PIX_FMT_RGB32       \
-        || (x)==PIX_FMT_RGB32_1     \
-        || (x)==PIX_FMT_YUVA420P    \
-    )
-
-static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h)
+#define isGray(x)                      \
+    ((x) == PIX_FMT_GRAY8       ||     \
+     (x) == PIX_FMT_Y400A       ||     \
+     (x) == PIX_FMT_GRAY16BE    ||     \
+     (x) == PIX_FMT_GRAY16LE)
+#define hasChroma(x)                   \
+    (!(isGray(x)                ||     \
+       (x) == PIX_FMT_MONOBLACK ||     \
+       (x) == PIX_FMT_MONOWHITE))
+#define isALPHA(x)                     \
+    ((x) == PIX_FMT_BGR32   ||         \
+     (x) == PIX_FMT_BGR32_1 ||         \
+     (x) == PIX_FMT_RGB32   ||         \
+     (x) == PIX_FMT_RGB32_1 ||         \
+     (x) == PIX_FMT_YUVA420P)
+
+static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1,
+                       int stride2, int w, int h)
 {
-    int x,y;
-    uint64_t ssd=0;
+    int x, y;
+    uint64_t ssd = 0;
 
-    for (y=0; y<h; y++) {
-        for (x=0; x<w; x++) {
-            int d= src1[x + y*stride1] - src2[x + y*stride2];
-            ssd+= d*d;
+    for (y = 0; y < h; y++) {
+        for (x = 0; x < w; x++) {
+            int d = src1[x + y * stride1] - src2[x + y * stride2];
+            ssd += d * d;
         }
     }
     return ssd;
@@ -86,14 +85,14 @@ static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
     static int cur_srcW, cur_srcH;
     static uint8_t *src[4];
     static int srcStride[4];
-    uint8_t *dst[4] = {0};
-    uint8_t *out[4] = {0};
+    uint8_t *dst[4] = { 0 };
+    uint8_t *out[4] = { 0 };
     int dstStride[4];
     int i;
-    uint64_t ssdY, ssdU=0, ssdV=0, ssdA=0;
+    uint64_t ssdY, ssdU = 0, ssdV = 0, ssdA = 0;
     struct SwsContext *dstContext = NULL, *outContext = NULL;
     uint32_t crc = 0;
-    int res = 0;
+    int res      = 0;
 
     if (cur_srcFormat != srcFormat || cur_srcW != srcW || cur_srcH != srcH) {
         struct SwsContext *srcContext = NULL;
@@ -105,11 +104,10 @@ static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
         av_image_fill_linesizes(srcStride, srcFormat, srcW);
         for (p = 0; p < 4; p++) {
             if (srcStride[p])
-                src[p] = av_mallocz(srcStride[p]*srcH+16);
+                src[p] = av_mallocz(srcStride[p] * srcH + 16);
             if (srcStride[p] && !src[p]) {
                 perror("Malloc");
                 res = -1;
-
                 goto end;
             }
         }
@@ -120,19 +118,18 @@ static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
                     av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name,
                     av_pix_fmt_descriptors[srcFormat].name);
             res = -1;
-
             goto end;
         }
         sws_scale(srcContext, ref, refStride, 0, h, src, srcStride);
         sws_freeContext(srcContext);
 
         cur_srcFormat = srcFormat;
-        cur_srcW = srcW;
-        cur_srcH = srcH;
+        cur_srcW      = srcW;
+        cur_srcH      = srcH;
     }
 
     av_image_fill_linesizes(dstStride, dstFormat, dstW);
-    for (i=0; i<4; i++) {
+    for (i = 0; i < 4; i++) {
         /* Image buffers passed into libswscale can be allocated any way you
          * prefer, as long as they're aligned enough for the architecture, and
          * they're freed appropriately (such as using av_free for buffers
@@ -140,7 +137,7 @@ static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
         /* An extra 16 bytes is being allocated because some scalers may write
          * out of bounds. */
         if (dstStride[i])
-            dst[i]= av_mallocz(dstStride[i]*dstH+16);
+            dst[i] = av_mallocz(dstStride[i] * dstH + 16);
         if (dstStride[i] && !dst[i]) {
             perror("Malloc");
             res = -1;
@@ -149,13 +146,13 @@ static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
         }
     }
 
-    dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL);
+    dstContext = sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat,
+                                flags, NULL, NULL, NULL);
     if (!dstContext) {
         fprintf(stderr, "Failed to get %s ---> %s\n",
                 av_pix_fmt_descriptors[srcFormat].name,
                 av_pix_fmt_descriptors[dstFormat].name);
         res = -1;
-
         goto end;
     }
 
@@ -167,9 +164,9 @@ static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
 
     sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
 
-    for (i = 0; i < 4 && dstStride[i]; i++) {
-        crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i], dstStride[i] * dstH);
-    }
+    for (i = 0; i < 4 && dstStride[i]; i++)
+        crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i],
+                     dstStride[i] * dstH);
 
     if (r && crc == r->crc) {
         ssdY = r->ssdY;
@@ -177,60 +174,59 @@ static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
         ssdV = r->ssdV;
         ssdA = r->ssdA;
     } else {
-        for (i=0; i<4; i++) {
+        for (i = 0; i < 4; i++) {
             if (refStride[i])
-                out[i]= av_mallocz(refStride[i]*h);
+                out[i] = av_mallocz(refStride[i] * h);
             if (refStride[i] && !out[i]) {
                 perror("Malloc");
                 res = -1;
-
                 goto end;
             }
         }
-        outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
+        outContext = sws_getContext(dstW, dstH, dstFormat, w, h,
+                                    PIX_FMT_YUVA420P, SWS_BILINEAR,
+                                    NULL, NULL, NULL);
         if (!outContext) {
             fprintf(stderr, "Failed to get %s ---> %s\n",
                     av_pix_fmt_descriptors[dstFormat].name,
                     av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name);
             res = -1;
-
             goto end;
         }
         sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
 
-        ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
+        ssdY = getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
         if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
             //FIXME check that output is really gray
-            ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
-            ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
+            ssdU = getSSD(ref[1], out[1], refStride[1], refStride[1],
+                          (w + 1) >> 1, (h + 1) >> 1);
+            ssdV = getSSD(ref[2], out[2], refStride[2], refStride[2],
+                          (w + 1) >> 1, (h + 1) >> 1);
         }
         if (isALPHA(srcFormat) && isALPHA(dstFormat))
-            ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
+            ssdA = getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
 
-        ssdY/= w*h;
-        ssdU/= w*h/4;
-        ssdV/= w*h/4;
-        ssdA/= w*h;
+        ssdY /= w * h;
+        ssdU /= w * h / 4;
+        ssdV /= w * h / 4;
+        ssdA /= w * h;
 
         sws_freeContext(outContext);
 
-        for (i=0; i<4; i++) {
+        for (i = 0; i < 4; i++)
             if (refStride[i])
                 av_free(out[i]);
-        }
     }
 
-    printf(" CRC=%08x SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"\n",
+    printf(" CRC=%08x SSD=%5"PRId64 ",%5"PRId64 ",%5"PRId64 ",%5"PRId64 "\n",
            crc, ssdY, ssdU, ssdV, ssdA);
 
 end:
-
     sws_freeContext(dstContext);
 
-    for (i=0; i<4; i++) {
+    for (i = 0; i < 4; i++)
         if (dstStride[i])
             av_free(dst[i]);
-    }
 
     return res;
 }
@@ -239,18 +235,18 @@ static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
                      enum PixelFormat srcFormat_in,
                      enum PixelFormat dstFormat_in)
 {
-    const int flags[] = { SWS_FAST_BILINEAR,
-                          SWS_BILINEAR, SWS_BICUBIC,
-                          SWS_X       , SWS_POINT  , SWS_AREA, 0 };
-    const int srcW = w;
-    const int srcH = h;
-    const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 };
-    const int dstH[] = { srcH - srcH/3, srcH, srcH + srcH/3, 0 };
+    const int flags[] = { SWS_FAST_BILINEAR, SWS_BILINEAR, SWS_BICUBIC,
+                          SWS_X, SWS_POINT, SWS_AREA, 0 };
+    const int srcW   = w;
+    const int srcH   = h;
+    const int dstW[] = { srcW - srcW / 3, srcW, srcW + srcW / 3, 0 };
+    const int dstH[] = { srcH - srcH / 3, srcH, srcH + srcH / 3, 0 };
     enum PixelFormat srcFormat, dstFormat;
 
     for (srcFormat = srcFormat_in != PIX_FMT_NONE ? srcFormat_in : 0;
          srcFormat < PIX_FMT_NB; srcFormat++) {
-        if (!sws_isSupportedInput(srcFormat) || !sws_isSupportedOutput(srcFormat))
+        if (!sws_isSupportedInput(srcFormat) ||
+            !sws_isSupportedOutput(srcFormat))
             continue;
 
         for (dstFormat = dstFormat_in != PIX_FMT_NONE ? dstFormat_in : 0;
@@ -258,7 +254,8 @@ static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
             int i, j, k;
             int res = 0;
 
-            if (!sws_isSupportedInput(dstFormat) || !sws_isSupportedOutput(dstFormat))
+            if (!sws_isSupportedInput(dstFormat) ||
+                !sws_isSupportedOutput(dstFormat))
                 continue;
 
             printf("%s -> %s\n",
@@ -266,14 +263,13 @@ static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
                    av_pix_fmt_descriptors[dstFormat].name);
             fflush(stdout);
 
-            for (k = 0; flags[k] && !res; k++) {
+            for (k = 0; flags[k] && !res; k++)
                 for (i = 0; dstW[i] && !res; i++)
                     for (j = 0; dstH[j] && !res; j++)
                         res = doTest(ref, refStride, w, h,
                                      srcFormat, dstFormat,
                                      srcW, srcH, dstW[i], dstH[j], flags[k],
                                      NULL);
-            }
             if (dstFormat_in != PIX_FMT_NONE)
                 break;
         }
@@ -299,13 +295,14 @@ static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
         int flags;
         int ret;
 
-        ret = sscanf(buf, " %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
-                          " SSD=%"PRId64", %"PRId64", %"PRId64", %"PRId64"\n",
-                          srcStr, &srcW, &srcH, dstStr, &dstW, &dstH,
-                          &flags, &r.crc, &r.ssdY, &r.ssdU, &r.ssdV, &r.ssdA);
+        ret = sscanf(buf,
+                     " %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
+                     " SSD=%"PRId64 ", %"PRId64 ", %"PRId64 ", %"PRId64 "\n",
+                     srcStr, &srcW, &srcH, dstStr, &dstW, &dstH,
+                     &flags, &r.crc, &r.ssdY, &r.ssdU, &r.ssdV, &r.ssdA);
         if (ret != 12) {
             srcStr[0] = dstStr[0] = 0;
-            ret = sscanf(buf, "%12s -> %12s\n", srcStr, dstStr);
+            ret       = sscanf(buf, "%12s -> %12s\n", srcStr, dstStr);
         }
 
         srcFormat = av_get_pix_fmt(srcStr);
@@ -339,12 +336,12 @@ int main(int argc, char **argv)
 {
     enum PixelFormat srcFormat = PIX_FMT_NONE;
     enum PixelFormat dstFormat = PIX_FMT_NONE;
-    uint8_t *rgb_data = av_malloc (W*H*4);
-    uint8_t *rgb_src[3]= {rgb_data, NULL, NULL};
-    int rgb_stride[3]={4*W, 0, 0};
-    uint8_t *data = av_malloc (4*W*H);
-    uint8_t *src[4]= {data, data+W*H, data+W*H*2, data+W*H*3};
-    int stride[4]={W, W, W, W};
+    uint8_t *rgb_data   = av_malloc(W * H * 4);
+    uint8_t *rgb_src[3] = { rgb_data, NULL, NULL };
+    int rgb_stride[3]   = { 4 * W, 0, 0 };
+    uint8_t *data       = av_malloc(4 * W * H);
+    uint8_t *src[4]     = { data, data + W * H, data + W * H * 2, data + W * H * 3 };
+    int stride[4]       = { W, W, W, W };
     int x, y;
     struct SwsContext *sws;
     AVLFG rand;
@@ -354,41 +351,40 @@ int main(int argc, char **argv)
     if (!rgb_data || !data)
         return -1;
 
-    sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
+    sws = sws_getContext(W / 12, H / 12, PIX_FMT_RGB32, W, H,
+                         PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
 
     av_lfg_init(&rand, 1);
 
-    for (y=0; y<H; y++) {
-        for (x=0; x<W*4; x++) {
-            rgb_data[ x + y*4*W]= av_lfg_get(&rand);
-        }
-    }
+    for (y = 0; y < H; y++)
+        for (x = 0; x < W * 4; x++)
+            rgb_data[ x + y * 4 * W] = av_lfg_get(&rand);
     sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
     sws_freeContext(sws);
     av_free(rgb_data);
 
     for (i = 1; i < argc; i += 2) {
-        if (argv[i][0] != '-' || i+1 == argc)
+        if (argv[i][0] != '-' || i + 1 == argc)
             goto bad_option;
         if (!strcmp(argv[i], "-ref")) {
-            FILE *fp = fopen(argv[i+1], "r");
+            FILE *fp = fopen(argv[i + 1], "r");
             if (!fp) {
-                fprintf(stderr, "could not open '%s'\n", argv[i+1]);
+                fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
                 goto error;
             }
             res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
             fclose(fp);
             goto end;
         } else if (!strcmp(argv[i], "-src")) {
-            srcFormat = av_get_pix_fmt(argv[i+1]);
+            srcFormat = av_get_pix_fmt(argv[i + 1]);
             if (srcFormat == PIX_FMT_NONE) {
-                fprintf(stderr, "invalid pixel format %s\n", argv[i+1]);
+                fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
                 return -1;
             }
         } else if (!strcmp(argv[i], "-dst")) {
-            dstFormat = av_get_pix_fmt(argv[i+1]);
+            dstFormat = av_get_pix_fmt(argv[i + 1]);
             if (dstFormat == PIX_FMT_NONE) {
-                fprintf(stderr, "invalid pixel format %s\n", argv[i+1]);
+                fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
                 return -1;
             }
         } else {