colorconv.h

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#ifndef COLORCONV_H
#define COLORCONV_H
 
#if __cplusplus
extern "C" {
#endif
 
#include <stdint.h>

uint16_t read_be_u16(uint16_t val)
{
    uint8_t* val_ptr = (uint8_t*)&val;
    return (uint16_t)((val_ptr[1] << 0) | (val_ptr[0] << 8));
}

inline uint32_t n64_color16_to_rgba32(uint16_t px16)
{
    int r = (px16 >> 11) & 0x1F;
    int g = (px16 >>  6) & 0x1F;
    int b = (px16 >>  1) & 0x1F;
    int a = (px16 >>  0) & 0x01;
 
    // expand to 8 bit
    r = (r << 3) | (r >> 2);
    g = (g << 3) | (g >> 2);
    b = (b << 3) | (b >> 2);
    a = a * 255;
 
    return (r << 24) | (g << 16) | (b << 8) | a;
}
 
#if __cplusplus
}
#endif
 
#endif // COLORCONV_H