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yutani: save screenshots as TGA

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This commit is contained in:
K. Lange 2018-11-18 15:02:36 +09:00
parent 08518780f3
commit 775a494bc0
1 changed files with 31 additions and 4 deletions
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35
apps/compositor.c
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@ -851,7 +851,7 @@ static void yutani_screenshot(yutani_globals_t * yg) {
yg->screenshot_frame = 0;
/* raw screenshots */
FILE * f = fopen("/tmp/screenshot.rgba", "w");
FILE * f = fopen("/tmp/screenshot.tga", "w");
if (!f) {
TRACE("Error opening output file for screenshot.");
return;
@ -872,12 +872,39 @@ static void yutani_screenshot(yutani_globals_t * yg) {
}
if (buffer) {
for (int y = 0; y <height; ++y) {
struct {
uint8_t id_length;
uint8_t color_map_type;
uint8_t image_type;
uint16_t color_map_first_entry;
uint16_t color_map_length;
uint8_t color_map_entry_size;
uint16_t x_origin;
uint16_t y_origin;
uint16_t width;
uint16_t height;
uint8_t depth;
uint8_t descriptor;
} __attribute__((packed)) header = {
0, /* No image ID field */
0, /* No color map */
2, /* Uncompressed truecolor */
0, 0, 0, /* No color map */
0, 0, /* Don't care about origin */
width, height, 32,
8,
};
fwrite(&header, 1, sizeof(header), f);
for (int y = height-1; y>=0; 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]),
_GRE(buffer[y * width + x]),
_RED(buffer[y * width + x]),
_ALP(buffer[y * width + x]),
};
fwrite(buf, 1, 4, f);