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-rw-r--r--examples/screenshot.c181
1 files changed, 31 insertions, 150 deletions
diff --git a/examples/screenshot.c b/examples/screenshot.c
index e73989c6..fb37f32c 100644
--- a/examples/screenshot.c
+++ b/examples/screenshot.c
@@ -26,6 +26,7 @@
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
+#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -36,33 +37,22 @@
#include <wayland-client.h>
#include <wlr/util/log.h>
#include "screenshooter-client-protocol.h"
-#include "util/os-compatibility.h"
static struct wl_shm *shm = NULL;
static struct orbital_screenshooter *screenshooter = NULL;
static struct wl_list output_list;
-int min_x, min_y, max_x, max_y;
-int buffer_copy_done;
+static bool buffer_copy_done;
struct screenshooter_output {
struct wl_output *output;
- struct wl_buffer *buffer;
- int width, height, offset_x, offset_y;
- enum wl_output_transform transform;
- void *data;
+ int width, height;
struct wl_list link;
};
static void output_handle_geometry(void *data, struct wl_output *wl_output,
int x, int y, int physical_width, int physical_height, int subpixel,
const char *make, const char *model, int transform) {
- struct screenshooter_output *output = wl_output_get_user_data(wl_output);
-
- if (wl_output == output->output) {
- output->offset_x = x;
- output->offset_y = y;
- output->transform = transform;
- }
+ // No-op
}
static void output_handle_mode(void *data, struct wl_output *wl_output,
@@ -86,7 +76,7 @@ static const struct wl_output_listener output_listener = {
};
static void screenshot_done(void *data, struct orbital_screenshot *screenshot) {
- buffer_copy_done = 1;
+ buffer_copy_done = true;
}
static const struct orbital_screenshot_listener screenshot_listener = {
@@ -113,7 +103,7 @@ static void handle_global(void *data, struct wl_registry *registry,
static void handle_global_remove(void *data, struct wl_registry *registry,
uint32_t name) {
- // Unimplemented
+ // Who cares?
}
static const struct wl_registry_listener registry_listener = {
@@ -123,14 +113,15 @@ static const struct wl_registry_listener registry_listener = {
static int backingfile(off_t size) {
char template[] = "/tmp/wlroots-shared-XXXXXX";
- int fd, ret;
-
- fd = mkstemp(template);
+ int fd = mkstemp(template);
if (fd < 0) {
return -1;
}
- while ((ret = ftruncate(fd, size)) == EINTR) {}
+ int ret;
+ while ((ret = ftruncate(fd, size)) == EINTR) {
+ // No-op
+ }
if (ret < 0) {
close(fd);
return -1;
@@ -140,7 +131,6 @@ static int backingfile(off_t size) {
return fd;
}
-
static struct wl_buffer *create_shm_buffer(int width, int height,
void **data_out) {
int stride = width * 4;
@@ -170,91 +160,8 @@ static struct wl_buffer *create_shm_buffer(int width, int height,
return buffer;
}
-static void write_image(const char *filename, int width, int height) {
- int buffer_stride = width * 4;
-
- void *data = calloc(1, buffer_stride * height);
- if (!data) {
- return;
- }
-
- struct screenshooter_output *output, *next;
- wl_list_for_each_safe(output, next, &output_list, link) {
- int output_stride = output->width * 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);
-
- 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 - 1 - j];
- }
- }
- break;
- case WL_OUTPUT_TRANSFORM_90:
- for (int i = 0; i < output->width; ++i) {
- for (int j = 0; j < output->height; ++j) {
- dst[i * width + j] =
- src[j * output->width + output->width - 1 - i];
- }
- }
- 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 - 1 - j) * output->width + output->width - 1 - 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 - 1 - i) * output->width + output->width - 1 - 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 - 1 - 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 - 1 - 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);
- }
-
+static void write_image(const char *filename, int width, int height,
+ void *data) {
char size[10 + 1 + 10 + 2 + 1]; // int32_t are max 10 digits
sprintf(size, "%dx%d+0", width, height);
@@ -270,12 +177,11 @@ static void write_image(const char *filename, int width, int height) {
exit(EXIT_FAILURE);
} else if (child != 0) {
close(fd[0]);
- if (write(fd[1], data, buffer_stride * height) < 0) {
+ if (write(fd[1], data, 4 * width * height) < 0) {
fprintf(stderr, "write() failed: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
close(fd[1]);
- free(data);
waitpid(child, NULL, 0);
} else {
close(fd[1]);
@@ -293,38 +199,9 @@ static void write_image(const char *filename, int width, int height) {
}
}
-static int set_buffer_size(int *width, int *height) {
- int owidth, oheight;
- min_x = min_y = INT_MAX;
- max_x = max_y = INT_MIN;
-
- struct screenshooter_output *output;
- wl_list_for_each(output, &output_list, link) {
- if (output->transform & 0x1) {
- owidth = output->height;
- oheight = output->width;
- } else {
- owidth = output->width;
- oheight = output->height;
- }
- min_x = MIN(min_x, output->offset_x);
- min_y = MIN(min_y, output->offset_y);
- max_x = MAX(max_x, output->offset_x + owidth);
- max_y = MAX(max_y, output->offset_y + oheight);
- }
-
- if (max_x <= min_x || max_y <= min_y) {
- return -1;
- }
-
- *width = max_x - min_x;
- *height = max_y - min_y;
-
- return 0;
-}
-
int main(int argc, char *argv[]) {
wlr_log_init(L_DEBUG, NULL);
+
struct wl_display * display = wl_display_connect(NULL);
if (display == NULL) {
fprintf(stderr, "failed to create display: %m\n");
@@ -342,27 +219,31 @@ int main(int argc, char *argv[]) {
return -1;
}
- int width, height;
- if (set_buffer_size(&width, &height)) {
- fprintf(stderr, "cannot set buffer size\n");
- return -1;
- }
-
+ int i = 0;
struct screenshooter_output *output;
wl_list_for_each(output, &output_list, link) {
- output->buffer = create_shm_buffer(output->width, output->height, &output->data);
- if (output->buffer == NULL) {
+ void *data = NULL;
+ struct wl_buffer *buffer =
+ create_shm_buffer(output->width, output->height, &data);
+ if (buffer == NULL) {
return -1;
}
struct orbital_screenshot *screenshot = orbital_screenshooter_shoot(
- screenshooter, output->output, output->buffer);
- orbital_screenshot_add_listener(screenshot, &screenshot_listener, screenshot);
- buffer_copy_done = 0;
+ screenshooter, output->output, buffer);
+ orbital_screenshot_add_listener(screenshot, &screenshot_listener,
+ screenshot);
+ buffer_copy_done = false;
while (!buffer_copy_done) {
wl_display_roundtrip(display);
}
+
+ char filename[24 + 10]; // int32_t are max 10 digits
+ snprintf(filename, sizeof(filename), "wayland-screenshot-%d.png", i);
+
+ write_image(filename, output->width, output->height, data);
+ wl_buffer_destroy(buffer);
+ ++i;
}
- write_image("wayland-screenshot.png", width, height);
return EXIT_SUCCESS;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 06:56:15 +0000