aboutsummaryrefslogtreecommitdiff
path: root/examples
diff options
context:
space:
mode:
Diffstat (limited to 'examples')
-rw-r--r--examples/screenshot.c78
1 files changed, 64 insertions, 14 deletions
diff --git a/examples/screenshot.c b/examples/screenshot.c
index 12892476..b305e56f 100644
--- a/examples/screenshot.c
+++ b/examples/screenshot.c
@@ -48,7 +48,7 @@ struct screenshooter_output {
struct wl_output *output;
struct wl_buffer *buffer;
int width, height, offset_x, offset_y;
- int transform;
+ enum wl_output_transform transform;
void *data;
struct wl_list link;
};
@@ -161,25 +161,75 @@ static void write_image(const char *filename, int width, int height) {
struct screenshooter_output *output, *next;
wl_list_for_each_safe(output, next, &output_list, link) {
int output_stride = output->width * 4;
- void *s = output->data;
- void *d = data + (output->offset_y - min_y) * buffer_stride +
- (output->offset_x - min_x) * 4;
+ uint32_t *src = (uint32_t *)output->data;
+ uint32_t *dst = (uint32_t *)(data +
+ (output->offset_y - min_y) * buffer_stride +
+ (output->offset_x - min_x) * 4);
- if (output->transform == WL_OUTPUT_TRANSFORM_90) {
- uint32_t *ss = s;
- uint32_t *sd = d;
+ switch (output->transform) {
+ case WL_OUTPUT_TRANSFORM_NORMAL:
+ for (int i = 0; i < output->height; i++) {
+ memcpy(dst, src, output_stride);
+ dst += width;
+ src += output->width;
+ }
+ break;
+ case WL_OUTPUT_TRANSFORM_FLIPPED:
+ for (int i = 0; i < output->height; ++i) {
+ for (int j = 0; j < output->width; ++j) {
+ dst[i * width + j] =
+ src[i * output->width + output->width - j];
+ }
+ }
+ break;
+ case WL_OUTPUT_TRANSFORM_90:
for (int i = 0; i < output->width; ++i) {
for (int j = 0; j < output->height; ++j) {
- sd[i * width + j]
- = ss[j * output->width + (output->width - i)];
+ dst[i * width + j] =
+ src[j * output->width + output->width - i];
}
}
- } else {
- for (int i = 0; i < output->height; i++) {
- memcpy(d, s, output_stride);
- d += buffer_stride;
- s += output_stride;
+ break;
+ case WL_OUTPUT_TRANSFORM_FLIPPED_90:
+ for (int i = 0; i < output->width; ++i) {
+ for (int j = 0; j < output->height; ++j) {
+ dst[i * width + j] =
+ src[(output->height - j) * output->width + output->width - i];
+ }
+ }
+ break;
+ case WL_OUTPUT_TRANSFORM_180:
+ for (int i = 0; i < output->height; ++i) {
+ for (int j = 0; j < output->width; ++j) {
+ dst[i * width + j] =
+ src[(output->height - i) * output->width + output->width - j];
+ }
+ }
+ break;
+ case WL_OUTPUT_TRANSFORM_FLIPPED_180:
+ for (int i = 0; i < output->height; ++i) {
+ for (int j = 0; j < output->width; ++j) {
+ dst[i * width + j] =
+ src[(output->height - i) * output->width + j];
+ }
+ }
+ break;
+ case WL_OUTPUT_TRANSFORM_270:
+ for (int i = 0; i < output->width; ++i) {
+ for (int j = 0; j < output->height; ++j) {
+ dst[i * width + j] =
+ src[(output->height - j) * output->width + i];
+ }
+ }
+ break;
+ case WL_OUTPUT_TRANSFORM_FLIPPED_270:
+ for (int i = 0; i < output->width; ++i) {
+ for (int j = 0; j < output->height; ++j) {
+ dst[i * width + j] =
+ src[j * output->width + i];
+ }
}
+ break;
}
free(output);