Function test_histogram

imagequant-sys/c_test/test.c:58–96

}

static void test_histogram() {
    liq_attr *attr = liq_attr_create();
    liq_histogram *hist = liq_histogram_create(attr);
    assert(hist);

    const unsigned char dummy1[4] = {255,0,255,255};
    liq_image *const img1 = liq_image_create_rgba(attr, dummy1, 1, 1, 0);
    assert(img1);

    const liq_error err1 = liq_histogram_add_image(hist, attr, img1);
    assert(LIQ_OK == err1);

    const unsigned char dummy2[4] = {0,0,0,0};
    liq_image *const img2 = liq_image_create_rgba(attr, dummy2, 1, 1, 0);
    assert(img2);
    liq_image_add_fixed_color(img2, (liq_color){255,255,255,255});


    const liq_error err2 = liq_histogram_add_image(hist, attr, img2);
    assert(LIQ_OK == err2);

    liq_image_destroy(img1);
    liq_image_destroy(img2);

    liq_result *res;
    liq_error err = liq_histogram_quantize(hist, attr, &res);
    assert(LIQ_OK == err);
    assert(res);

    liq_attr_destroy(attr);

    liq_histogram_destroy(hist);

    const liq_palette *pal = liq_get_palette(res);
    assert(pal);
    assert(pal->count == 3);

    liq_result_destroy(res);
}

static void test_fixed_colors() {
    liq_attr *attr = liq_attr_create();