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-rw-r--r--ext/tarkin/yuv.c308
1 files changed, 157 insertions, 151 deletions
diff --git a/ext/tarkin/yuv.c b/ext/tarkin/yuv.c
index 32c563f4..d781a3c8 100644
--- a/ext/tarkin/yuv.c
+++ b/ext/tarkin/yuv.c
@@ -8,221 +8,227 @@
/*#define TARKIN_YUV_LXY*/
-static inline
-uint8_t CLAMP(int16_t x)
+static inline uint8_t
+CLAMP (int16_t x)
{
- return ((x > 255) ? 255 : (x < 0) ? 0 : x);
+ return ((x > 255) ? 255 : (x < 0) ? 0 : x);
}
-void rgb24_to_yuv (uint8_t *rgb, Wavelet3DBuf *yuv [], uint32_t frame)
+void
+rgb24_to_yuv (uint8_t * rgb, Wavelet3DBuf * yuv[], uint32_t frame)
{
- int count = yuv[0]->width * yuv[0]->height;
- int16_t *y = yuv[0]->data + frame * count;
- int16_t *u = yuv[1]->data + frame * count;
- int16_t *v = yuv[2]->data + frame * count;
- int i;
+ int count = yuv[0]->width * yuv[0]->height;
+ int16_t *y = yuv[0]->data + frame * count;
+ int16_t *u = yuv[1]->data + frame * count;
+ int16_t *v = yuv[2]->data + frame * count;
+ int i;
#if defined(TARKIN_YUV_EXACT)
- for (i=0; i<count; i++, rgb+=3) {
- y [i] = ((int16_t) 77 * rgb [0] + 150 * rgb [1] + 29 * rgb [2]) / 256;
- u [i] = ((int16_t) -44 * rgb [0] - 87 * rgb [1] + 131 * rgb [2]) / 256;
- v [i] = ((int16_t) 131 * rgb [0] - 110 * rgb [1] - 21 * rgb [2]) / 256;
- }
+ for (i = 0; i < count; i++, rgb += 3) {
+ y[i] = ((int16_t) 77 * rgb[0] + 150 * rgb[1] + 29 * rgb[2]) / 256;
+ u[i] = ((int16_t) - 44 * rgb[0] - 87 * rgb[1] + 131 * rgb[2]) / 256;
+ v[i] = ((int16_t) 131 * rgb[0] - 110 * rgb[1] - 21 * rgb[2]) / 256;
+ }
#elif defined(TARKIN_YUV_LXY)
- for (i=0; i<count; i++, rgb+=3) {
- y [i] = ((int16_t) 54 * rgb [0] + 182 * rgb [1] + 18 * rgb [2]) / 256;
- u [i] = rgb [0] - y [i];
- v [i] = rgb [2] - y [i];
- }
+ for (i = 0; i < count; i++, rgb += 3) {
+ y[i] = ((int16_t) 54 * rgb[0] + 182 * rgb[1] + 18 * rgb[2]) / 256;
+ u[i] = rgb[0] - y[i];
+ v[i] = rgb[2] - y[i];
+ }
#else
- for (i=0; i<count; i++, rgb+=3) {
- v [i] = rgb [0] - rgb [1];
- u [i] = rgb [2] - rgb [1];
- y [i] = rgb [1] + (u [i] + v [i]) / 4;
- }
+ for (i = 0; i < count; i++, rgb += 3) {
+ v[i] = rgb[0] - rgb[1];
+ u[i] = rgb[2] - rgb[1];
+ y[i] = rgb[1] + (u[i] + v[i]) / 4;
+ }
#endif
}
-void yuv_to_rgb24 (Wavelet3DBuf *yuv [], uint8_t *rgb, uint32_t frame)
+void
+yuv_to_rgb24 (Wavelet3DBuf * yuv[], uint8_t * rgb, uint32_t frame)
{
- int count = yuv[0]->width * yuv[0]->height;
- int16_t *y = yuv[0]->data + frame * count;
- int16_t *u = yuv[1]->data + frame * count;
- int16_t *v = yuv[2]->data + frame * count;
- int i;
+ int count = yuv[0]->width * yuv[0]->height;
+ int16_t *y = yuv[0]->data + frame * count;
+ int16_t *u = yuv[1]->data + frame * count;
+ int16_t *v = yuv[2]->data + frame * count;
+ int i;
#if defined(TARKIN_YUV_EXACT)
- for (i=0; i<count; i++, rgb+=3) {
- rgb [0] = CLAMP(y [i] + 1.371 * v [i]);
- rgb [1] = CLAMP(y [i] - 0.698 * v [i] - 0.336 * u [i]);
- rgb [2] = CLAMP(y [i] + 1.732 * u [i]);
- }
+ for (i = 0; i < count; i++, rgb += 3) {
+ rgb[0] = CLAMP (y[i] + 1.371 * v[i]);
+ rgb[1] = CLAMP (y[i] - 0.698 * v[i] - 0.336 * u[i]);
+ rgb[2] = CLAMP (y[i] + 1.732 * u[i]);
+ }
#elif defined(TARKIN_YUV_LXY)
- for (i=0; i<count; i++, rgb+=3) {
- rgb [1] = CLAMP(y [i] - (76 * u [i] - 26 * v [i]) / 256);
- rgb [0] = CLAMP(y [i] + u [i]);
- rgb [2] = CLAMP(y [i] + v [i]);
- }
+ for (i = 0; i < count; i++, rgb += 3) {
+ rgb[1] = CLAMP (y[i] - (76 * u[i] - 26 * v[i]) / 256);
+ rgb[0] = CLAMP (y[i] + u[i]);
+ rgb[2] = CLAMP (y[i] + v[i]);
+ }
#else
- for (i=0; i<count; i++, rgb+=3) {
- rgb [1] = CLAMP(y [i] - (u [i] + v [i]) / 4);
- rgb [2] = CLAMP(u [i] + rgb [1]);
- rgb [0] = CLAMP(v [i] + rgb [1]);
- }
+ for (i = 0; i < count; i++, rgb += 3) {
+ rgb[1] = CLAMP (y[i] - (u[i] + v[i]) / 4);
+ rgb[2] = CLAMP (u[i] + rgb[1]);
+ rgb[0] = CLAMP (v[i] + rgb[1]);
+ }
#endif
}
-void rgb32_to_yuv (uint8_t *rgb, Wavelet3DBuf *yuv [], uint32_t frame)
+void
+rgb32_to_yuv (uint8_t * rgb, Wavelet3DBuf * yuv[], uint32_t frame)
{
- int count = yuv[0]->width * yuv[0]->height;
- int16_t *y = yuv[0]->data + frame * count;
- int16_t *u = yuv[1]->data + frame * count;
- int16_t *v = yuv[2]->data + frame * count;
- int i;
+ int count = yuv[0]->width * yuv[0]->height;
+ int16_t *y = yuv[0]->data + frame * count;
+ int16_t *u = yuv[1]->data + frame * count;
+ int16_t *v = yuv[2]->data + frame * count;
+ int i;
#if defined(TARKIN_YUV_EXACT)
- for (i=0; i<count; i++, rgb+=4) {
- y [i] = ((int16_t) 77 * rgb [0] + 150 * rgb [1] + 29 * rgb [2]) / 256;
- u [i] = ((int16_t) -44 * rgb [0] - 87 * rgb [1] + 131 * rgb [2]) / 256;
- v [i] = ((int16_t) 131 * rgb [0] - 110 * rgb [1] - 21 * rgb [2]) / 256;
- }
+ for (i = 0; i < count; i++, rgb += 4) {
+ y[i] = ((int16_t) 77 * rgb[0] + 150 * rgb[1] + 29 * rgb[2]) / 256;
+ u[i] = ((int16_t) - 44 * rgb[0] - 87 * rgb[1] + 131 * rgb[2]) / 256;
+ v[i] = ((int16_t) 131 * rgb[0] - 110 * rgb[1] - 21 * rgb[2]) / 256;
+ }
#elif defined(TARKIN_YUV_LXY)
- for (i=0; i<count; i++, rgb+=4) {
- y [i] = ((int16_t) 54 * rgb [0] + 182 * rgb [1] + 18 * rgb [2]) / 256;
- u [i] = rgb [0] - y [i];
- v [i] = rgb [2] - y [i];
- }
+ for (i = 0; i < count; i++, rgb += 4) {
+ y[i] = ((int16_t) 54 * rgb[0] + 182 * rgb[1] + 18 * rgb[2]) / 256;
+ u[i] = rgb[0] - y[i];
+ v[i] = rgb[2] - y[i];
+ }
#else
- for (i=0; i<count; i++, rgb+=4) {
- v [i] = rgb [0] - rgb [1];
- u [i] = rgb [2] - rgb [1];
- y [i] = rgb [1] + (u [i] + v [i]) / 4;
- }
+ for (i = 0; i < count; i++, rgb += 4) {
+ v[i] = rgb[0] - rgb[1];
+ u[i] = rgb[2] - rgb[1];
+ y[i] = rgb[1] + (u[i] + v[i]) / 4;
+ }
#endif
}
-void yuv_to_rgb32 (Wavelet3DBuf *yuv [], uint8_t *rgb, uint32_t frame)
+void
+yuv_to_rgb32 (Wavelet3DBuf * yuv[], uint8_t * rgb, uint32_t frame)
{
- int count = yuv[0]->width * yuv[0]->height;
- int16_t *y = yuv[0]->data + frame * count;
- int16_t *u = yuv[1]->data + frame * count;
- int16_t *v = yuv[2]->data + frame * count;
- int i;
+ int count = yuv[0]->width * yuv[0]->height;
+ int16_t *y = yuv[0]->data + frame * count;
+ int16_t *u = yuv[1]->data + frame * count;
+ int16_t *v = yuv[2]->data + frame * count;
+ int i;
#if defined(TARKIN_YUV_EXACT)
- for (i=0; i<count; i++, rgb+=4) {
- rgb [0] = CLAMP(y [i] + 1.371 * v [i]);
- rgb [1] = CLAMP(y [i] - 0.698 * v [i] - 0.336 * u [i]);
- rgb [2] = CLAMP(y [i] + 1.732 * u [i]);
- }
+ for (i = 0; i < count; i++, rgb += 4) {
+ rgb[0] = CLAMP (y[i] + 1.371 * v[i]);
+ rgb[1] = CLAMP (y[i] - 0.698 * v[i] - 0.336 * u[i]);
+ rgb[2] = CLAMP (y[i] + 1.732 * u[i]);
+ }
#elif defined(TARKIN_YUV_LXY)
- for (i=0; i<count; i++, rgb+=4) {
- rgb [1] = CLAMP(y [i] - (76 * u [i] - 26 * v [i]) / 256);
- rgb [0] = CLAMP(y [i] + u [i]);
- rgb [2] = CLAMP(y [i] + v [i]);
- }
+ for (i = 0; i < count; i++, rgb += 4) {
+ rgb[1] = CLAMP (y[i] - (76 * u[i] - 26 * v[i]) / 256);
+ rgb[0] = CLAMP (y[i] + u[i]);
+ rgb[2] = CLAMP (y[i] + v[i]);
+ }
#else
- for (i=0; i<count; i++, rgb+=4) {
- rgb [1] = CLAMP(y [i] - (u [i] + v [i]) / 4);
- rgb [2] = CLAMP(u [i] + rgb [1]);
- rgb [0] = CLAMP(v [i] + rgb [1]);
- }
+ for (i = 0; i < count; i++, rgb += 4) {
+ rgb[1] = CLAMP (y[i] - (u[i] + v[i]) / 4);
+ rgb[2] = CLAMP (u[i] + rgb[1]);
+ rgb[0] = CLAMP (v[i] + rgb[1]);
+ }
#endif
}
-void rgba_to_yuv (uint8_t *rgba, Wavelet3DBuf *yuva [], uint32_t frame)
+void
+rgba_to_yuv (uint8_t * rgba, Wavelet3DBuf * yuva[], uint32_t frame)
{
- int count = yuva[0]->width * yuva[0]->height;
- int16_t *y = yuva[0]->data + frame * count;
- int16_t *u = yuva[1]->data + frame * count;
- int16_t *v = yuva[2]->data + frame * count;
- int16_t *a = yuva[3]->data + frame * count;
- int i;
+ int count = yuva[0]->width * yuva[0]->height;
+ int16_t *y = yuva[0]->data + frame * count;
+ int16_t *u = yuva[1]->data + frame * count;
+ int16_t *v = yuva[2]->data + frame * count;
+ int16_t *a = yuva[3]->data + frame * count;
+ int i;
#if defined(TARKIN_YUV_EXACT)
- for (i=0; i<count; i++, rgba+=4) {
- y [i] = ((int16_t) 77 * rgba [0] + 150 * rgba [1] + 29 * rgba [2]) / 256;
- u [i] = ((int16_t) -44 * rgba [0] - 87 * rgba [1] + 131 * rgba [2]) / 256;
- v [i] = ((int16_t) 131 * rgba [0] - 110 * rgba [1] - 21 * rgba [2]) / 256;
- a [i] = rgba [3];
- }
+ for (i = 0; i < count; i++, rgba += 4) {
+ y[i] = ((int16_t) 77 * rgba[0] + 150 * rgba[1] + 29 * rgba[2]) / 256;
+ u[i] = ((int16_t) - 44 * rgba[0] - 87 * rgba[1] + 131 * rgba[2]) / 256;
+ v[i] = ((int16_t) 131 * rgba[0] - 110 * rgba[1] - 21 * rgba[2]) / 256;
+ a[i] = rgba[3];
+ }
#elif defined(TARKIN_YUV_LXY)
- for (i=0; i<count; i++, rgba+=4) {
- y [i] = ((int16_t) 54 * rgba [0] + 182 * rgba [1] + 18 * rgba [2]) / 256;
- u [i] = rgba [0] - y [i];
- v [i] = rgba [2] - y [i];
- a [i] = rgba [3];
- }
+ for (i = 0; i < count; i++, rgba += 4) {
+ y[i] = ((int16_t) 54 * rgba[0] + 182 * rgba[1] + 18 * rgba[2]) / 256;
+ u[i] = rgba[0] - y[i];
+ v[i] = rgba[2] - y[i];
+ a[i] = rgba[3];
+ }
#else
- for (i=0; i<count; i++, rgba+=4) {
- v [i] = rgba [0] - rgba [1];
- u [i] = rgba [2] - rgba [1];
- y [i] = rgba [1] + (u [i] + v [i]) / 4;
- a [i] = rgba [3];
- }
+ for (i = 0; i < count; i++, rgba += 4) {
+ v[i] = rgba[0] - rgba[1];
+ u[i] = rgba[2] - rgba[1];
+ y[i] = rgba[1] + (u[i] + v[i]) / 4;
+ a[i] = rgba[3];
+ }
#endif
}
-void yuv_to_rgba (Wavelet3DBuf *yuva [], uint8_t *rgba, uint32_t frame)
+void
+yuv_to_rgba (Wavelet3DBuf * yuva[], uint8_t * rgba, uint32_t frame)
{
- int count = yuva[0]->width * yuva[0]->height;
- int16_t *y = yuva[0]->data + frame * count;
- int16_t *u = yuva[1]->data + frame * count;
- int16_t *v = yuva[2]->data + frame * count;
- int16_t *a = yuva[3]->data + frame * count;
- int i;
+ int count = yuva[0]->width * yuva[0]->height;
+ int16_t *y = yuva[0]->data + frame * count;
+ int16_t *u = yuva[1]->data + frame * count;
+ int16_t *v = yuva[2]->data + frame * count;
+ int16_t *a = yuva[3]->data + frame * count;
+ int i;
#if defined(TARKIN_YUV_EXACT)
- for (i=0; i<count; i++, rgba+=4) {
- rgba [0] = CLAMP(y [i] + 1.371 * v [i]);
- rgba [1] = CLAMP(y [i] - 0.698 * v [i] - 0.336 * u [i]);
- rgba [2] = CLAMP(y [i] + 1.732 * u [i]);
- rgba [3] = a [i];
- }
+ for (i = 0; i < count; i++, rgba += 4) {
+ rgba[0] = CLAMP (y[i] + 1.371 * v[i]);
+ rgba[1] = CLAMP (y[i] - 0.698 * v[i] - 0.336 * u[i]);
+ rgba[2] = CLAMP (y[i] + 1.732 * u[i]);
+ rgba[3] = a[i];
+ }
#elif defined(TARKIN_YUV_LXY)
- for (i=0; i<count; i++, rgba+=4) {
- rgba [1] = CLAMP(y [i] - (76 * u [i] - 26 * v [i]) / 256);
- rgba [0] = CLAMP(y [i] + u [i]);
- rgba [2] = CLAMP(y [i] + v [i]);
- rgba [3] = a [i];
- }
+ for (i = 0; i < count; i++, rgba += 4) {
+ rgba[1] = CLAMP (y[i] - (76 * u[i] - 26 * v[i]) / 256);
+ rgba[0] = CLAMP (y[i] + u[i]);
+ rgba[2] = CLAMP (y[i] + v[i]);
+ rgba[3] = a[i];
+ }
#else
- for (i=0; i<count; i++, rgba+=4) {
- rgba [1] = CLAMP(y [i] - (u [i] + v [i]) / 4);
- rgba [2] = CLAMP(u [i] + rgba [1]);
- rgba [0] = CLAMP(v [i] + rgba [1]);
- rgba [3] = a [i];
- }
+ for (i = 0; i < count; i++, rgba += 4) {
+ rgba[1] = CLAMP (y[i] - (u[i] + v[i]) / 4);
+ rgba[2] = CLAMP (u[i] + rgba[1]);
+ rgba[0] = CLAMP (v[i] + rgba[1]);
+ rgba[3] = a[i];
+ }
#endif
}
-void grayscale_to_y (uint8_t *rgba, Wavelet3DBuf *y [], uint32_t frame)
+void
+grayscale_to_y (uint8_t * rgba, Wavelet3DBuf * y[], uint32_t frame)
{
- int count = y[0]->width * y[0]->height;
- int16_t *_y = y[0]->data + frame * count;
- int i;
+ int count = y[0]->width * y[0]->height;
+ int16_t *_y = y[0]->data + frame * count;
+ int i;
- for (i=0; i<count; i++)
- _y [i] = rgba [i];
+ for (i = 0; i < count; i++)
+ _y[i] = rgba[i];
}
-void y_to_grayscale (Wavelet3DBuf *y [], uint8_t *rgba, uint32_t frame)
+void
+y_to_grayscale (Wavelet3DBuf * y[], uint8_t * rgba, uint32_t frame)
{
- int count = y[0]->width * y[0]->height;
- int16_t *_y = y[0]->data + frame * count;
- int i;
+ int count = y[0]->width * y[0]->height;
+ int16_t *_y = y[0]->data + frame * count;
+ int i;
- for (i=0; i<count; i++)
- rgba [i] = CLAMP(_y[i]);
+ for (i = 0; i < count; i++)
+ rgba[i] = CLAMP (_y[i]);
}
-
-
generated by cgit v1.2.1 (git 2.18.0) at 2024-06-30 04:36:17 +0000