From f628559d9a600159576faff9735e069479c9d361 Mon Sep 17 00:00:00 2001
From: Diego Biurrun <diego@biurrun.de>
Date: Mon, 9 May 2011 11:45:13 +0200
Subject: rotozoom: K&R coding style cosmetics

---
 tests/rotozoom.c | 207 ++++++++++++++++++++++++++++---------------------------
 1 file changed, 106 insertions(+), 101 deletions(-)

(limited to 'tests/rotozoom.c')

diff --git a/tests/rotozoom.c b/tests/rotozoom.c
index 505072c4f9..03e9afb86f 100644
--- a/tests/rotozoom.c
+++ b/tests/rotozoom.c
@@ -24,47 +24,52 @@
 #include <stdio.h>
 #include <inttypes.h>
 
-#define FIXP (1<<16)
-#define MY_PI 205887 //(M_PI*FIX)
+#define FIXP (1 << 16)
+#define MY_PI 205887 //(M_PI * FIX)
 
-static int64_t int_pow(int64_t a, int p){
-    int64_t v= FIXP;
+static int64_t int_pow(int64_t a, int p)
+{
+    int64_t v = FIXP;
 
-    for(; p; p--){
-        v*= a;
-        v/= FIXP;
+    for (; p; p--) {
+        v *= a;
+        v /= FIXP;
     }
 
     return v;
 }
 
-static int64_t int_sin(int64_t a){
-    if(a<0) a= MY_PI-a; // 0..inf
-    a %= 2*MY_PI;       // 0..2PI
+static int64_t int_sin(int64_t a)
+{
+    if (a < 0)
+        a = MY_PI - a;  // 0..inf
+    a %= 2 * MY_PI;     // 0..2PI
 
-    if(a>=MY_PI*3/2) a -= 2*MY_PI;  // -PI/2 .. 3PI/2
-    if(a>=MY_PI/2  ) a = MY_PI - a; // -PI/2 ..  PI/2
+    if (a >= MY_PI * 3 / 2)
+        a -= 2 * MY_PI; // -PI / 2 .. 3PI / 2
+    if (a >= MY_PI /2)
+        a = MY_PI - a;  // -PI / 2 ..  PI / 2
 
-    return a - int_pow(a, 3)/6 + int_pow(a, 5)/120 - int_pow(a, 7)/5040;
+    return a - int_pow(a, 3) / 6 + int_pow(a, 5) / 120 - int_pow(a, 7) / 5040;
 }
 
 #define SCALEBITS 8
 #define ONE_HALF  (1 << (SCALEBITS - 1))
-#define FIX(x)    ((int) ((x) * (1L<<SCALEBITS) + 0.5))
+#define FIX(x)    ((int) ((x) * (1L << SCALEBITS) + 0.5))
 typedef unsigned char UINT8;
 
 static void rgb24_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
-                              UINT8 *src, int width, int height)
+                             UINT8 *src, int width, int height)
 {
     int wrap, wrap3, x, y;
     int r, g, b, r1, g1, b1;
     UINT8 *p;
 
-    wrap = width;
+    wrap  = width;
     wrap3 = width * 3;
     p = src;
-    for(y=0;y<height;y+=2) {
-        for(x=0;x<width;x+=2) {
+    for (y = 0; y < height; y += 2) {
+        for (x = 0; x < width; x += 2) {
             r = p[0];
             g = p[1];
             b = p[2];
@@ -81,7 +86,7 @@ static void rgb24_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
             b1 += b;
             lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g +
                       FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
-            p += wrap3;
+            p   += wrap3;
             lum += wrap;
 
             r = p[0];
@@ -104,14 +109,14 @@ static void rgb24_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
             cb[0] = ((- FIX(0.16874) * r1 - FIX(0.33126) * g1 +
                       FIX(0.50000) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
             cr[0] = ((FIX(0.50000) * r1 - FIX(0.41869) * g1 -
-                     FIX(0.08131) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
+                      FIX(0.08131) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
 
             cb++;
             cr++;
-            p += -wrap3 + 2 * 3;
-            lum += -wrap + 2;
+            p   += -wrap3 + 2 * 3;
+            lum += -wrap  + 2;
         }
-        p += wrap3;
+        p   += wrap3;
         lum += wrap;
     }
 }
@@ -119,7 +124,7 @@ static void rgb24_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
 /* cif format */
 #define DEFAULT_WIDTH   352
 #define DEFAULT_HEIGHT  288
-#define DEFAULT_NB_PICT 50
+#define DEFAULT_NB_PICT  50
 
 static void pgmyuv_save(const char *filename, int w, int h,
                         unsigned char *rgb_tab)
@@ -130,19 +135,19 @@ static void pgmyuv_save(const char *filename, int w, int h,
     unsigned char *lum_tab, *cb_tab, *cr_tab;
 
     lum_tab = malloc(w * h);
-    cb_tab = malloc((w * h) / 4);
-    cr_tab = malloc((w * h) / 4);
+    cb_tab  = malloc((w * h) / 4);
+    cr_tab  = malloc((w * h) / 4);
 
     rgb24_to_yuv420p(lum_tab, cb_tab, cr_tab, rgb_tab, w, h);
 
-    f = fopen(filename,"wb");
+    f = fopen(filename, "wb");
     fprintf(f, "P5\n%d %d\n%d\n", w, (h * 3) / 2, 255);
     fwrite(lum_tab, 1, w * h, f);
     h2 = h / 2;
     w2 = w / 2;
     cb = cb_tab;
     cr = cr_tab;
-    for(i=0;i<h2;i++) {
+    for (i = 0; i < h2; i++) {
         fwrite(cb, 1, w2, f);
         fwrite(cr, 1, w2, f);
         cb += w2;
@@ -172,96 +177,96 @@ static void put_pixel(int x, int y, int r, int g, int b)
     p[2] = b;
 }
 
-unsigned char tab_r[256*256];
-unsigned char tab_g[256*256];
-unsigned char tab_b[256*256];
+unsigned char tab_r[256 * 256];
+unsigned char tab_g[256 * 256];
+unsigned char tab_b[256 * 256];
 
 int h_cos [360];
 int h_sin [360];
 
-static int ipol(uint8_t *src, int x, int y){
-    int int_x= x>>16;
-    int int_y= y>>16;
-    int frac_x= x&0xFFFF;
-    int frac_y= y&0xFFFF;
-    int s00= src[ ( int_x   &255) + 256*( int_y   &255) ];
-    int s01= src[ ((int_x+1)&255) + 256*( int_y   &255) ];
-    int s10= src[ ( int_x   &255) + 256*((int_y+1)&255) ];
-    int s11= src[ ((int_x+1)&255) + 256*((int_y+1)&255) ];
-    int s0= (((1<<16) - frac_x)*s00 + frac_x*s01)>>8;
-    int s1= (((1<<16) - frac_x)*s10 + frac_x*s11)>>8;
-
-    return (((1<<16) - frac_y)*s0 + frac_y*s1)>>24;
+static int ipol(uint8_t *src, int x, int y)
+{
+    int int_x  = x >> 16;
+    int int_y  = y >> 16;
+    int frac_x = x & 0xFFFF;
+    int frac_y = y & 0xFFFF;
+    int s00    = src[( int_x      & 255) + 256 * ( int_y      & 255)];
+    int s01    = src[((int_x + 1) & 255) + 256 * ( int_y      & 255)];
+    int s10    = src[( int_x      & 255) + 256 * ((int_y + 1) & 255)];
+    int s11    = src[((int_x + 1) & 255) + 256 * ((int_y + 1) & 255)];
+    int s0     = (((1 << 16) - frac_x) * s00 + frac_x * s01) >> 8;
+    int s1     = (((1 << 16) - frac_x) * s10 + frac_x * s11) >> 8;
+
+    return (((1 << 16) - frac_y) * s0 + frac_y * s1) >> 24;
 }
 
 static void gen_image(int num, int w, int h)
 {
-  const int c = h_cos [num % 360];
-  const int s = h_sin [num % 360];
-
-  const int xi = -(w/2) * c;
-  const int yi =  (w/2) * s;
+    const int c = h_cos [num % 360];
+    const int s = h_sin [num % 360];
 
-  const int xj = -(h/2) * s;
-  const int yj = -(h/2) * c;
-  int i,j;
+    const int xi = -(w / 2) * c;
+    const int yi =  (w / 2) * s;
 
-  int x,y;
-  int xprime = xj;
-  int yprime = yj;
+    const int xj = -(h / 2) * s;
+    const int yj = -(h / 2) * c;
+    int i, j;
 
+    int x, y;
+    int xprime = xj;
+    int yprime = yj;
 
-  for (j=0;j<h;j++) {
+    for (j = 0; j < h; j++) {
+        x = xprime + xi + FIXP * w / 2;
+        xprime += s;
 
-    x = xprime + xi + FIXP*w/2;
-    xprime += s;
+        y = yprime + yi + FIXP * h / 2;
+        yprime += c;
 
-    y = yprime + yi + FIXP*h/2;
-    yprime += c;
-
-    for ( i=0 ; i<w ; i++ ) {
-      x += c;
-      y -= s;
-      put_pixel(i, j, ipol(tab_r, x, y), ipol(tab_g, x, y), ipol(tab_b, x, y));
+        for (i = 0; i < w; i++ ) {
+            x += c;
+            y -= s;
+            put_pixel(i, j, ipol(tab_r, x, y), ipol(tab_g, x, y), ipol(tab_b, x, y));
+        }
     }
-  }
 }
 
 #define W 256
 #define H 256
 
-static void init_demo(const char *filename) {
-  int i,j;
-  int h;
-  int radian;
-  char line[3 * W];
-
-  FILE *fichier;
-
-  fichier = fopen(filename,"rb");
-  if (!fichier) {
-      perror(filename);
-      exit(1);
-  }
-
-  fread(line, 1, 15, fichier);
-  for (i=0;i<H;i++) {
-    fread(line,1,3*W,fichier);
-    for (j=0;j<W;j++) {
-          tab_r[W*i+j] = line[3*j    ];
-          tab_g[W*i+j] = line[3*j + 1];
-          tab_b[W*i+j] = line[3*j + 2];
+static void init_demo(const char *filename)
+{
+    int i, j;
+    int h;
+    int radian;
+    char line[3 * W];
+
+    FILE *fichier;
+
+    fichier = fopen(filename, "rb");
+    if (!fichier) {
+        perror(filename);
+        exit(1);
+    }
+
+    fread(line, 1, 15, fichier);
+    for (i = 0; i < H; i++) {
+        fread(line, 1, 3 * W, fichier);
+        for (j = 0; j < W; j++) {
+            tab_r[W * i + j] = line[3 * j    ];
+            tab_g[W * i + j] = line[3 * j + 1];
+            tab_b[W * i + j] = line[3 * j + 2];
+        }
+    }
+    fclose(fichier);
+
+    /* tables sin/cos */
+    for (i = 0; i < 360; i++) {
+        radian = 2 * i * MY_PI / 360;
+        h      = 2 * FIXP + int_sin (radian);
+        h_cos[i] = (h * int_sin(radian + MY_PI / 2)) / 2 / FIXP;
+        h_sin[i] = (h * int_sin(radian)            ) / 2 / FIXP;
     }
-  }
-  fclose(fichier);
-
-  /* tables sin/cos */
-  for (i=0;i<360;i++) {
-    radian = 2*i*MY_PI/360;
-    h = 2*FIXP + int_sin (radian);
-    h_cos[i] = ( h * int_sin (radian + MY_PI/2) )/2/FIXP;
-    h_sin[i] = ( h * int_sin (radian          ) )/2/FIXP;
-  }
 }
 
 int main(int argc, char **argv)
@@ -279,13 +284,13 @@ int main(int argc, char **argv)
     h = DEFAULT_HEIGHT;
 
     rgb_tab = malloc(w * h * 3);
-    wrap = w * 3;
-    width = w;
-    height = h;
+    wrap    = w * 3;
+    width   = w;
+    height  = h;
 
     init_demo(argv[2]);
 
-    for(i=0;i<DEFAULT_NB_PICT;i++) {
+    for (i = 0; i < DEFAULT_NB_PICT; i++) {
         snprintf(buf, sizeof(buf), "%s%02d.pgm", argv[1], i);
         gen_image(i, w, h);
         pgmyuv_save(buf, w, h, rgb_tab);
-- 
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