color.c

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#include "color.h"
 
#include <stdio.h>   // for fprintf, stderr
#include <stdlib.h>  // for abort
 
#include "types.h"   // for depth
 
#define COEFFS(depth) \
        { \
                Y_R(depth),  Y_G(depth),  Y_B(depth),\
                CB_R(depth), CB_G(depth), CB_B(depth),\
                CR_R(depth), CR_G(depth), CR_B(depth),\
\
                SCALED(R_CR(depth, KR_709, KB_709)), \
                SCALED(G_CB(depth, KR_709, KB_709)), \
                SCALED(G_CR(depth, KR_709, KB_709)), \
                SCALED(B_CB(depth, KR_709, KB_709)), \
        }
 
const struct color_coeffs *
get_color_coeffs(int ycbcr_bit_depth)
{
        static const struct color_coeffs col_cfs_8  = COEFFS(DEPTH8);
        static const struct color_coeffs col_cfs_10 = COEFFS(DEPTH10);
        static const struct color_coeffs col_cfs_12 = COEFFS(DEPTH12);
        static const struct color_coeffs col_cfs_16 = COEFFS(DEPTH16);
        switch ((enum depth) ycbcr_bit_depth) {
        case DEPTH8:
                return &col_cfs_8;
        case DEPTH10:
                return &col_cfs_10;
        case DEPTH12:
                return &col_cfs_12;
        case DEPTH16:
                return &col_cfs_16;
        }
        fprintf(stderr, "%s: Wrong depth %d!\n", __func__,
                ycbcr_bit_depth);
        abort();
}