diff options
Diffstat (limited to 'tests/rotozoom.c')
-rw-r--r-- | tests/rotozoom.c | 113 |
1 files changed, 58 insertions, 55 deletions
diff --git a/tests/rotozoom.c b/tests/rotozoom.c index 1a4505729a..4406290de1 100644 --- a/tests/rotozoom.c +++ b/tests/rotozoom.c @@ -25,7 +25,7 @@ #include <inttypes.h> #define FIXP (1 << 16) -#define MY_PI 205887 //(M_PI * FIX) +#define MY_PI 205887 // (M_PI * FIX) static int64_t int_pow(int64_t a, int p) { @@ -47,7 +47,7 @@ static int64_t int_sin(int64_t a) if (a >= MY_PI * 3 / 2) a -= 2 * MY_PI; // -PI / 2 .. 3PI / 2 - if (a >= MY_PI /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; @@ -67,49 +67,49 @@ static void rgb24_to_yuv420p(unsigned char *lum, unsigned char *cb, wrap = width; wrap3 = width * 3; - p = src; + p = src; for (y = 0; y < height; y += 2) { for (x = 0; x < width; x += 2) { - r = p[0]; - g = p[1]; - b = p[2]; - r1 = r; - g1 = g; - b1 = b; - lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g + - FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; - r = p[3]; - g = p[4]; - b = p[5]; - r1 += r; - g1 += g; - b1 += b; - lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g + - FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; - p += wrap3; - lum += wrap; - - r = p[0]; - g = p[1]; - b = p[2]; - r1 += r; - g1 += g; - b1 += b; - lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g + - FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; - r = p[3]; - g = p[4]; - b = p[5]; - r1 += r; - g1 += g; - b1 += b; - lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g + - FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; - - 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; + r = p[0]; + g = p[1]; + b = p[2]; + r1 = r; + g1 = g; + b1 = b; + lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g + + FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; + r = p[3]; + g = p[4]; + b = p[5]; + r1 += r; + g1 += g; + b1 += b; + lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g + + FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; + p += wrap3; + lum += wrap; + + r = p[0]; + g = p[1]; + b = p[2]; + r1 += r; + g1 += g; + b1 += b; + lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g + + FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; + r = p[3]; + g = p[4]; + b = p[5]; + r1 += r; + g1 += g; + b1 += b; + lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g + + FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; + + 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; cb++; cr++; @@ -171,7 +171,7 @@ static void put_pixel(int x, int y, int r, int g, int b) y < 0 || y >= height) return; - p = rgb_tab + y * wrap + x * 3; + p = rgb_tab + y * wrap + x * 3; p[0] = r; p[1] = g; p[2] = b; @@ -181,8 +181,8 @@ 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]; +int h_cos[360]; +int h_sin[360]; static int ipol(uint8_t *src, int x, int y) { @@ -202,8 +202,8 @@ static int ipol(uint8_t *src, int x, int y) 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 c = h_cos[num % 360]; + const int s = h_sin[num % 360]; const int xi = -(w / 2) * c; const int yi = (w / 2) * s; @@ -217,16 +217,19 @@ static void gen_image(int num, int w, int h) int yprime = yj; for (j = 0; j < h; j++) { - x = xprime + xi + FIXP * w / 2; + x = xprime + xi + FIXP * w / 2; xprime += s; - y = yprime + yi + FIXP * h / 2; + y = yprime + yi + FIXP * h / 2; yprime += c; - for (i = 0; i < w; i++ ) { + 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)); + put_pixel(i, j, + ipol(tab_r, x, y), + ipol(tab_g, x, y), + ipol(tab_b, x, y)); } } } @@ -264,13 +267,13 @@ static int init_demo(const char *filename) /* tables sin/cos */ for (i = 0; i < 360; i++) { - radian = 2 * i * MY_PI / 360; - h = 2 * FIXP + int_sin (radian); + 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; } - return 0; + return 0; } int main(int argc, char **argv) |