Check wl_shm_buffer format
#include <wlr/util/log.h>
#include "screenshooter-protocol.h"
-static void copy_bgra_yflip(uint8_t *dst, uint8_t *src, int32_t height,
+static void copy_yflip(uint8_t *dst, uint8_t *src, int32_t height,
int32_t stride) {
uint8_t *end = dst + height * stride;
while (dst < end) {
@@ -34,7 +34,7 @@ static void output_frame_notify(struct wl_listener *listener, void *_data) {
void *data = wl_shm_buffer_get_data(state->shm_buffer);
wl_shm_buffer_begin_access(state->shm_buffer);
- copy_bgra_yflip(data, state->pixels + state->stride * (state->height - 1),
+ copy_yflip(data, state->pixels + state->stride * (state->height - 1),
state->height, state->stride);
wl_shm_buffer_end_access(state->shm_buffer);
@@ -63,6 +63,12 @@ static void screenshooter_shoot(struct wl_client *client,
return;
}
+ uint32_t format = wl_shm_buffer_get_format(shm_buffer);
+ if (format != WL_SHM_FORMAT_XRGB8888) {
+ wlr_log(L_ERROR, "Invalid buffer: unsupported format");
+ return;
+ }
+
uint8_t *pixels = malloc(stride * height);
if (pixels == NULL) {
wl_client_post_no_memory(client);
