QB64-PE/internal/c/parts/video/image/decode/bmp/src.c

#ifdef QB64_BACKSLASH_FILESYSTEM
#    include "src\\EasyBMP.cpp"
#else
#    include "src/EasyBMP.cpp"
#endif

uint8 *image_decode_bmp(uint8 *content, int32 bytes, int32 *result, int32 *x, int32 *y) {
    // Result:bit 1=Success,bit 2=32bit[BGRA]
    *result = 0;

    BMP bm;

    if (!bm.ReadFromMemory((char *)content, bytes)) {
        return NULL;
    }

    int32 h, w;
    h = bm.TellHeight();
    w = bm.TellWidth();

    uint8 *out;
    out = (uint8 *)malloc(h * w * 4);

    uint8 *o;
    int32 x2, y2;
    o = out;
    for (y2 = 0; y2 < h; y2++) {
        for (x2 = 0; x2 < w; x2++) {
            *o = bm(x2, y2)->Blue;
            o++;
            *o = bm(x2, y2)->Green;
            o++;
            *o = bm(x2, y2)->Red;
            o++;
            *o = 255;
            o++;
        }
    }

    *result = 1 + 2;
    *x = w;
    *y = h;
    return out;
}