kopia lustrzana https://github.com/xdsopl/robot36
renamed linear_srgb to srgb and srgb_linear to linear
rodzic
6997edfba7
commit
93c8bad3c6
54
encode.c
54
encode.c
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@ -84,15 +84,15 @@ void y_scan(int y)
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int x1 = fclampf(x0 + 1, 0.0, 319.0);
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int off0 = 3 * y * img->width + 3 * x0;
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int off1 = 3 * y * img->width + 3 * x1;
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float R0 = srgb_linear(img->pixel[off0 + 0]);
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float G0 = srgb_linear(img->pixel[off0 + 1]);
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float B0 = srgb_linear(img->pixel[off0 + 2]);
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float R1 = srgb_linear(img->pixel[off1 + 0]);
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float G1 = srgb_linear(img->pixel[off1 + 1]);
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float B1 = srgb_linear(img->pixel[off1 + 2]);
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uint8_t R = linear_srgb(flerpf(R0, R1, xf - (float)x0));
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uint8_t G = linear_srgb(flerpf(G0, G1, xf - (float)x0));
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uint8_t B = linear_srgb(flerpf(B0, B1, xf - (float)x0));
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float R0 = linear(img->pixel[off0 + 0]);
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float G0 = linear(img->pixel[off0 + 1]);
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float B0 = linear(img->pixel[off0 + 2]);
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float R1 = linear(img->pixel[off1 + 0]);
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float G1 = linear(img->pixel[off1 + 1]);
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float B1 = linear(img->pixel[off1 + 2]);
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uint8_t R = srgb(flerpf(R0, R1, xf - (float)x0));
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uint8_t G = srgb(flerpf(G0, G1, xf - (float)x0));
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uint8_t B = srgb(flerpf(B0, B1, xf - (float)x0));
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add_freq(1500.0 + 800.0 * Y_RGB(R, G, B) / 255.0);
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}
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}
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@ -107,15 +107,15 @@ void v_scan(int y)
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int evn1 = 3 * y * img->width + 6 * x1;
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int odd0 = 3 * (y + 1) * img->width + 6 * x0;
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int odd1 = 3 * (y + 1) * img->width + 6 * x1;
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float R0 = (srgb_linear(img->pixel[evn0 + 0]) + srgb_linear(img->pixel[odd0 + 0]) + srgb_linear(img->pixel[evn0 + 3]) + srgb_linear(img->pixel[odd0 + 3])) / 4;
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float G0 = (srgb_linear(img->pixel[evn0 + 1]) + srgb_linear(img->pixel[odd0 + 1]) + srgb_linear(img->pixel[evn0 + 4]) + srgb_linear(img->pixel[odd0 + 4])) / 4;
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float B0 = (srgb_linear(img->pixel[evn0 + 2]) + srgb_linear(img->pixel[odd0 + 2]) + srgb_linear(img->pixel[evn0 + 5]) + srgb_linear(img->pixel[odd0 + 5])) / 4;
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float R1 = (srgb_linear(img->pixel[evn1 + 0]) + srgb_linear(img->pixel[odd1 + 0]) + srgb_linear(img->pixel[evn1 + 3]) + srgb_linear(img->pixel[odd1 + 3])) / 4;
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float G1 = (srgb_linear(img->pixel[evn1 + 1]) + srgb_linear(img->pixel[odd1 + 1]) + srgb_linear(img->pixel[evn1 + 4]) + srgb_linear(img->pixel[odd1 + 4])) / 4;
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float B1 = (srgb_linear(img->pixel[evn1 + 2]) + srgb_linear(img->pixel[odd1 + 2]) + srgb_linear(img->pixel[evn1 + 5]) + srgb_linear(img->pixel[odd1 + 5])) / 4;
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uint8_t R = linear_srgb(flerpf(R0, R1, xf - (float)x0));
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uint8_t G = linear_srgb(flerpf(G0, G1, xf - (float)x0));
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uint8_t B = linear_srgb(flerpf(B0, B1, xf - (float)x0));
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float R0 = (linear(img->pixel[evn0 + 0]) + linear(img->pixel[odd0 + 0]) + linear(img->pixel[evn0 + 3]) + linear(img->pixel[odd0 + 3])) / 4;
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float G0 = (linear(img->pixel[evn0 + 1]) + linear(img->pixel[odd0 + 1]) + linear(img->pixel[evn0 + 4]) + linear(img->pixel[odd0 + 4])) / 4;
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float B0 = (linear(img->pixel[evn0 + 2]) + linear(img->pixel[odd0 + 2]) + linear(img->pixel[evn0 + 5]) + linear(img->pixel[odd0 + 5])) / 4;
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float R1 = (linear(img->pixel[evn1 + 0]) + linear(img->pixel[odd1 + 0]) + linear(img->pixel[evn1 + 3]) + linear(img->pixel[odd1 + 3])) / 4;
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float G1 = (linear(img->pixel[evn1 + 1]) + linear(img->pixel[odd1 + 1]) + linear(img->pixel[evn1 + 4]) + linear(img->pixel[odd1 + 4])) / 4;
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float B1 = (linear(img->pixel[evn1 + 2]) + linear(img->pixel[odd1 + 2]) + linear(img->pixel[evn1 + 5]) + linear(img->pixel[odd1 + 5])) / 4;
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uint8_t R = srgb(flerpf(R0, R1, xf - (float)x0));
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uint8_t G = srgb(flerpf(G0, G1, xf - (float)x0));
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uint8_t B = srgb(flerpf(B0, B1, xf - (float)x0));
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add_freq(1500.0 + 800.0 * V_RGB(R, G, B) / 255.0);
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}
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}
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@ -129,15 +129,15 @@ void u_scan(int y)
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int evn1 = 3 * (y - 1) * img->width + 6 * x1;
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int odd0 = 3 * y * img->width + 6 * x0;
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int odd1 = 3 * y * img->width + 6 * x1;
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float R0 = (srgb_linear(img->pixel[evn0 + 0]) + srgb_linear(img->pixel[odd0 + 0]) + srgb_linear(img->pixel[evn0 + 3]) + srgb_linear(img->pixel[odd0 + 3])) / 4;
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float G0 = (srgb_linear(img->pixel[evn0 + 1]) + srgb_linear(img->pixel[odd0 + 1]) + srgb_linear(img->pixel[evn0 + 4]) + srgb_linear(img->pixel[odd0 + 4])) / 4;
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float B0 = (srgb_linear(img->pixel[evn0 + 2]) + srgb_linear(img->pixel[odd0 + 2]) + srgb_linear(img->pixel[evn0 + 5]) + srgb_linear(img->pixel[odd0 + 5])) / 4;
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float R1 = (srgb_linear(img->pixel[evn1 + 0]) + srgb_linear(img->pixel[odd1 + 0]) + srgb_linear(img->pixel[evn1 + 3]) + srgb_linear(img->pixel[odd1 + 3])) / 4;
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float G1 = (srgb_linear(img->pixel[evn1 + 1]) + srgb_linear(img->pixel[odd1 + 1]) + srgb_linear(img->pixel[evn1 + 4]) + srgb_linear(img->pixel[odd1 + 4])) / 4;
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float B1 = (srgb_linear(img->pixel[evn1 + 2]) + srgb_linear(img->pixel[odd1 + 2]) + srgb_linear(img->pixel[evn1 + 5]) + srgb_linear(img->pixel[odd1 + 5])) / 4;
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uint8_t R = linear_srgb(flerpf(R0, R1, xf - (float)x0));
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uint8_t G = linear_srgb(flerpf(G0, G1, xf - (float)x0));
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uint8_t B = linear_srgb(flerpf(B0, B1, xf - (float)x0));
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float R0 = (linear(img->pixel[evn0 + 0]) + linear(img->pixel[odd0 + 0]) + linear(img->pixel[evn0 + 3]) + linear(img->pixel[odd0 + 3])) / 4;
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float G0 = (linear(img->pixel[evn0 + 1]) + linear(img->pixel[odd0 + 1]) + linear(img->pixel[evn0 + 4]) + linear(img->pixel[odd0 + 4])) / 4;
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float B0 = (linear(img->pixel[evn0 + 2]) + linear(img->pixel[odd0 + 2]) + linear(img->pixel[evn0 + 5]) + linear(img->pixel[odd0 + 5])) / 4;
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float R1 = (linear(img->pixel[evn1 + 0]) + linear(img->pixel[odd1 + 0]) + linear(img->pixel[evn1 + 3]) + linear(img->pixel[odd1 + 3])) / 4;
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float G1 = (linear(img->pixel[evn1 + 1]) + linear(img->pixel[odd1 + 1]) + linear(img->pixel[evn1 + 4]) + linear(img->pixel[odd1 + 4])) / 4;
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float B1 = (linear(img->pixel[evn1 + 2]) + linear(img->pixel[odd1 + 2]) + linear(img->pixel[evn1 + 5]) + linear(img->pixel[odd1 + 5])) / 4;
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uint8_t R = srgb(flerpf(R0, R1, xf - (float)x0));
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uint8_t G = srgb(flerpf(G0, G1, xf - (float)x0));
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uint8_t B = srgb(flerpf(B0, B1, xf - (float)x0));
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add_freq(1500.0 + 800.0 * U_RGB(R, G, B) / 255.0);
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}
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}
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4
yuv.c
4
yuv.c
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@ -15,7 +15,7 @@ uint8_t yuv_clamp(float x)
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return tmp > 255.0 ? 255.0 : tmp;
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}
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uint8_t linear_srgb(float linear)
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uint8_t srgb(float linear)
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{
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float v = fminf(fmaxf(linear, 0.0f), 1.0f);
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float K0 = 0.03928f;
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@ -26,7 +26,7 @@ uint8_t linear_srgb(float linear)
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return 255.0f * srgb;
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}
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float srgb_linear(uint8_t srgb)
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float linear(uint8_t srgb)
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{
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float v = srgb / 255.0f;
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float K0 = 0.03928f;
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4
yuv.h
4
yuv.h
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@ -10,8 +10,8 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
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#define YUV_H
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#include <stdint.h>
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uint8_t linear_srgb(float linear);
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float srgb_linear(uint8_t srgb);
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uint8_t srgb(float linear);
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float linear(uint8_t srgb);
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uint8_t R_YUV(uint8_t, uint8_t, uint8_t);
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uint8_t G_YUV(uint8_t, uint8_t, uint8_t);
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uint8_t B_YUV(uint8_t, uint8_t, uint8_t);
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