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#undef NDEBUG
#include <assert.h>
#include "libimagequant.h"
#include <stdio.h>
#include <string.h>
static char magic[] = "magic";
static void test_log_callback_function(const liq_attr *at, const char *message, void* user_info) {
assert(at);
assert(user_info == magic);
assert(message);
assert(strlen(message));
}
static int test_abort_callback(float progress_percent, void* user_info) {
assert(progress_percent >= 0.0 && progress_percent <= 100.0);
assert(user_info == magic);
return 0;
}
static int progress_called = 0;
static int test_continue_callback(float progress_percent, void* user_info) {
assert(progress_percent >= 0.0 && progress_percent <= 100.0);
assert(user_info == magic);
progress_called++;
return 1;
}
static void test_abort() {
liq_attr *attr = liq_attr_create();
unsigned char dummy[4] = {0};
liq_image *img = liq_image_create_rgba(attr, dummy, 1, 1, 0);
liq_attr_set_progress_callback(attr, test_abort_callback, magic);
liq_result *res = liq_quantize_image(attr, img);
assert(!res);
liq_attr_destroy(attr);
}
static void test_zero_histogram() {
liq_attr *attr = liq_attr_create();
liq_histogram *hist = liq_histogram_create(attr);
assert(hist);
liq_result *res;
liq_error err = liq_histogram_quantize(hist, attr, &res);
assert(!res);
assert(err);
liq_attr_destroy(attr);
liq_histogram_destroy(hist);
}
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();
liq_attr_set_progress_callback(attr, test_continue_callback, magic);
liq_set_log_callback(attr, test_log_callback_function, magic);
unsigned char dummy[4] = {0};
liq_image *img = liq_image_create_rgba(attr, dummy, 1, 1, 0);
assert(img);
liq_image_add_fixed_color(img, (liq_color){0,0,0,0});
liq_result *res = liq_quantize_image(attr, img);
assert(res);
assert(progress_called);
const liq_palette *pal = liq_get_palette(res);
assert(pal);
assert(pal->count == 1);
liq_result_destroy(res);
liq_image_destroy(img);
liq_attr_destroy(attr);
}
static void test_fixed_colors_order() {
liq_attr *attr = liq_attr_create();
unsigned char dummy[4] = {0};
liq_image *img = liq_image_create_rgba(attr, dummy, 1, 1, 0);
assert(img);
liq_color colors[17] = {
{0,0,0,0}, {1,1,1,1}, {2,2,2,2}, {3,3,3,3}, {4,4,4,4}, {5,4,4,4},
{6,4,4,4}, {6,7,4,4}, {6,7,8,4}, {6,7,8,9}, {10,7,8,9}, {10,11,8,9},
{10,11,12,9}, {10,11,12,13}, {14,11,12,13}, {14,15,12,13}, {253,254,255,254},
};
for(int i=0; i < 17; i++) {
liq_image_add_fixed_color(img, colors[i]);
}
liq_result *res = liq_quantize_image(attr, img);
assert(res);
const liq_palette *pal = liq_get_palette(res);
assert(pal);
assert(pal->count == 17);
for(int i=0; i < 17; i++) {
assert(pal->entries[i].r == colors[i].r);
assert(pal->entries[i].g == colors[i].g);
assert(pal->entries[i].b == colors[i].b);
assert(pal->entries[i].a == colors[i].a);
}
liq_set_dithering_level(res, 1.0);
char buf[1];
assert(LIQ_OK == liq_write_remapped_image(res, img, buf, 1));
liq_result_set_progress_callback(res, test_abort_callback, magic);
assert(LIQ_ABORTED == liq_write_remapped_image(res, img, buf, 1));
liq_result_destroy(res);
liq_image_destroy(img);
liq_attr_destroy(attr);
}
void run_liq_tests() {
test_fixed_colors();
test_fixed_colors_order();
test_abort();
test_histogram();
test_zero_histogram();
}
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