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Quick and dirty RGBA raw screenshots

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This commit is contained in:
K. Lange 2018-09-17 10:09:49 +09:00
parent d052471948
commit c0a310b409
1 changed files with 38 additions and 1 deletions
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39
apps/compositor.c
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@ -1080,7 +1080,44 @@ static void yutani_blit_windows(yutani_globals_t * yg) {
* Take a screenshot
*/
static void yutani_screenshot(yutani_globals_t * yg) {
/* TODO Render bitmap screenshot */
int task = yg->screenshot_frame;
yg->screenshot_frame = 0;
/* raw screenshots */
FILE * f = fopen("/tmp/screenshot.rgba", "w");
if (!f) {
TRACE("Error opening output file for screenshot.");
return;
}
uint32_t * buffer = NULL;
int width, height;
if (task == YUTANI_SCREENSHOT_FULL) {
buffer = (void *)yg->backend_ctx->backbuffer;
width = yg->width;
height = yg->height;
} else if (task == YUTANI_SCREENSHOT_WINDOW) {
yutani_server_window_t * window = yg->focused_window;
buffer = (void *)window->buffer;
width = window->width;
height = window->height;
}
if (buffer) {
for (int y = 0; y <height; ++y) {
for (int x = 0; x < width; ++x) {
uint8_t buf[4] = {
_RED(buffer[y * width + x]),
_GRE(buffer[y * width + x]),
_BLU(buffer[y * width + x]),
_ALP(buffer[y * width + x]),
};
fwrite(buf, 1, 4, f);
}
}
}
fclose(f);
}
/**