diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/screencopy.c | 32 |
1 files changed, 24 insertions, 8 deletions
diff --git a/examples/screencopy.c b/examples/screencopy.c index 8b064a15..7be06d68 100644 --- a/examples/screencopy.c +++ b/examples/screencopy.c @@ -45,6 +45,7 @@ static struct { struct wl_buffer *wl_buffer; void *data; int width, height, stride; + bool y_invert; } buffer; bool buffer_copy_done = false; @@ -99,7 +100,7 @@ static struct wl_buffer *create_shm_buffer(int width, int height, static void frame_handle_buffer(void *data, struct zwlr_screencopy_frame_v1 *frame, uint32_t width, uint32_t height, - uint32_t flags, uint32_t format, uint32_t stride) { + uint32_t format, uint32_t stride) { buffer.width = width; buffer.height = height; buffer.wl_buffer = @@ -112,6 +113,11 @@ static void frame_handle_buffer(void *data, zwlr_screencopy_frame_v1_copy(frame, buffer.wl_buffer); } +static void frame_handle_flags(void *data, + struct zwlr_screencopy_frame_v1 *frame, uint32_t flags) { + buffer.y_invert = flags & ZWLR_SCREENCOPY_FRAME_V1_FLAGS_Y_INVERT; +} + static void frame_handle_ready(void *data, struct zwlr_screencopy_frame_v1 *frame, uint32_t tv_sec_hi, uint32_t tv_sec_lo, uint32_t tv_nsec) { @@ -126,6 +132,7 @@ static void frame_handle_failed(void *data, static const struct zwlr_screencopy_frame_v1_listener frame_listener = { .buffer = frame_handle_buffer, + .flags = frame_handle_flags, .ready = frame_handle_ready, .failed = frame_handle_failed, }; @@ -153,8 +160,8 @@ static const struct wl_registry_listener registry_listener = { .global_remove = handle_global_remove, }; -static void write_image(const char *filename, int width, int height, int stride, - void *data) { +static void write_image(char *filename, int width, int height, int stride, + bool y_invert, void *data) { char size[10 + 1 + 10 + 2 + 1]; // int32_t are max 10 digits sprintf(size, "%dx%d+0", width, height); @@ -183,10 +190,19 @@ static void write_image(const char *filename, int width, int height, int stride, exit(EXIT_FAILURE); } close(fd[0]); + // We requested WL_SHM_FORMAT_XRGB8888 in little endian, so that's BGRA // in big endian. - execlp("convert", "convert", "-depth", "8", "-size", size, "bgra:-", - "-alpha", "opaque", filename, NULL); + char *argv[11] = {"convert", "-depth", "8", "-size", size, "bgra:-", + "-alpha", "opaque", filename, NULL}; + if (y_invert) { + argv[8] = "-flip"; + argv[9] = filename; + argv[10] = NULL; + } + + execvp("convert", argv); + fprintf(stderr, "cannot execute convert\n"); exit(EXIT_FAILURE); } @@ -221,12 +237,12 @@ int main(int argc, char *argv[]) { zwlr_screencopy_manager_v1_capture_output(screencopy_manager, 0, output); zwlr_screencopy_frame_v1_add_listener(frame, &frame_listener, NULL); - while (!buffer_copy_done) { - wl_display_roundtrip(display); + while (!buffer_copy_done && wl_display_dispatch(display) != -1) { + // This space is intentionally left blank } write_image("wayland-screenshot.png", buffer.width, buffer.height, - buffer.stride, buffer.data); + buffer.stride, buffer.y_invert, buffer.data); wl_buffer_destroy(buffer.wl_buffer); return EXIT_SUCCESS; |