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/*
* Copyright © 2015 Samsung Electronics Co., Ltd
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <stdint.h>
#include <stdio.h>
#include "weston-test-client-helper.h"
char *server_parameters="--use-pixman --width=320 --height=240";
static void
draw_stuff(pixman_image_t *image)
{
int w, h;
int stride; /* bytes */
int x, y;
uint8_t r, g, b;
uint32_t *pixels;
uint32_t *pixel;
pixman_format_code_t fmt;
fmt = pixman_image_get_format(image);
w = pixman_image_get_width(image);
h = pixman_image_get_height(image);
stride = pixman_image_get_stride(image);
pixels = pixman_image_get_data(image);
assert(PIXMAN_FORMAT_BPP(fmt) == 32);
for (x = 0; x < w; x++)
for (y = 0; y < h; y++) {
b = x;
g = x + y;
r = y;
pixel = pixels + (y * stride / 4) + x;
*pixel = (255 << 24) | (r << 16) | (g << 8) | b;
}
}
TEST(internal_screenshot)
{
struct buffer *buf;
struct client *client;
struct wl_surface *surface;
struct buffer *screenshot = NULL;
pixman_image_t *reference_good = NULL;
pixman_image_t *reference_bad = NULL;
pixman_image_t *diffimg;
struct rectangle clip;
const char *fname;
bool match = false;
bool dump_all_images = true;
/* Create the client */
printf("Creating client for test\n");
client = create_client_and_test_surface(100, 100, 100, 100);
assert(client);
surface = client->surface->wl_surface;
/*
* We are racing our screenshooting against weston-desktop-shell
* setting the cursor. If w-d-s wins, our screenshot will have a cursor
* shown, which makes the image comparison fail. Our window and the
* default pointer position are accidentally causing an overlap that
* intersects our test clip rectangle.
*
* w-d-s wins very rarely though, so the race is easy to miss. You can
* make it happen by putting a delay before the call to
* create_client_and_test_surface().
*
* The weston_test_move_pointer() below makes the race irrelevant, as
* the cursor won't overlap with anything we care about.
*/
/* Move the pointer away from the screenshot area. */
weston_test_move_pointer(client->test->weston_test, 0, 1, 0, 0, 0);
buf = create_shm_buffer_a8r8g8b8(client, 100, 100);
draw_stuff(buf->image);
wl_surface_attach(surface, buf->proxy, 0, 0);
wl_surface_damage(surface, 0, 0, 100, 100);
wl_surface_commit(surface);
/* Take a snapshot. Result will be in screenshot->wl_buffer. */
printf("Taking a screenshot\n");
screenshot = capture_screenshot_of_output(client);
assert(screenshot);
/* Load good reference image */
fname = screenshot_reference_filename("internal-screenshot-good", 0);
printf("Loading good reference image %s\n", fname);
reference_good = load_image_from_png(fname);
assert(reference_good);
/* Load bad reference image */
fname = screenshot_reference_filename("internal-screenshot-bad", 0);
printf("Loading bad reference image %s\n", fname);
reference_bad = load_image_from_png(fname);
assert(reference_bad);
/* Test check_images_match() without a clip.
* We expect this to fail since we use a bad reference image
*/
match = check_images_match(screenshot->image, reference_bad, NULL);
printf("Screenshot %s reference image\n", match? "equal to" : "different from");
assert(!match);
pixman_image_unref(reference_bad);
/* Test check_images_match() with clip.
* Alpha-blending and other effects can cause irrelevant discrepancies, so look only
* at a small portion of the solid-colored background
*/
clip.x = 100;
clip.y = 100;
clip.width = 100;
clip.height = 100;
printf("Clip: %d,%d %d x %d\n", clip.x, clip.y, clip.width, clip.height);
match = check_images_match(screenshot->image, reference_good, &clip);
printf("Screenshot %s reference image in clipped area\n", match? "matches" : "doesn't match");
if (!match) {
diffimg = visualize_image_difference(screenshot->image, reference_good, &clip);
fname = screenshot_output_filename("internal-screenshot-error", 0);
write_image_as_png(diffimg, fname);
pixman_image_unref(diffimg);
}
pixman_image_unref(reference_good);
/* Test dumping of non-matching images */
if (!match || dump_all_images) {
fname = screenshot_output_filename("internal-screenshot", 0);
write_image_as_png(screenshot->image, fname);
}
buffer_destroy(screenshot);
printf("Test complete\n");
assert(match);
}
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