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clients: screenshot: Use shared client-buffer utils

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In preparation for dmabuf support.

Signed-off-by: Robert Mader <robert.mader@collabora.com>
This commit is contained in:
Robert Mader 2025-09-02 15:06:08 +02:00
parent 4d43e63ab5
commit ccce6cfdda
2 changed files with 11 additions and 41 deletions
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1
clients/meson.build
View file

@ -491,6 +491,7 @@ if get_option('shell-desktop') or get_option('deprecated-shell-fullscreen') or g
weston_output_capture_protocol_c,
include_directories: common_inc,
dependencies: [
dep_client_buffer,
dep_toytoolkit,
dep_libweston_private, # for pixel-formats.h
dep_pixman,

51
clients/screenshot.c
View file

@ -41,6 +41,7 @@
#include <wayland-client.h>
#include "pixel-formats.h"
#include "shared/client-buffer-util.h"
#include "shared/file-util.h"
#include "shared/os-compatibility.h"
#include "shared/xalloc.h"
@ -59,9 +60,7 @@ struct screenshooter_app {
};
struct screenshooter_buffer {
size_t len;
void *data;
struct wl_buffer *wl_buffer;
struct client_buffer *buf;
pixman_image_t *image;
};
@ -93,10 +92,6 @@ screenshot_create_shm_buffer(struct screenshooter_app *app,
const struct pixel_format_info *fmt)
{
struct screenshooter_buffer *buffer;
struct wl_shm_pool *pool;
int fd;
size_t bytes_pp;
size_t stride;
assert(width > 0);
assert(height > 0);
@ -105,40 +100,15 @@ screenshot_create_shm_buffer(struct screenshooter_app *app,
buffer = xzalloc(sizeof *buffer);
bytes_pp = fmt->bpp / 8;
stride = width * bytes_pp;
buffer->len = stride * height;
assert(width == stride / bytes_pp);
assert(height == buffer->len / stride);
fd = os_create_anonymous_file(buffer->len);
if (fd < 0) {
fprintf(stderr, "creating a buffer file for %zd B failed: %s\n",
buffer->len, strerror(errno));
free(buffer);
return NULL;
}
buffer->data = mmap(NULL, buffer->len, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
if (buffer->data == MAP_FAILED) {
fprintf(stderr, "mmap failed: %s\n", strerror(errno));
close(fd);
free(buffer);
return NULL;
}
pool = wl_shm_create_pool(app->shm, fd, buffer->len);
close(fd);
buffer->wl_buffer =
wl_shm_pool_create_buffer(pool, 0, width, height, stride,
pixel_format_get_shm_format(fmt));
wl_shm_pool_destroy(pool);
buffer->buf = client_buffer_util_create_shm_buffer(app->shm,
fmt,
width,
height);
buffer->image = pixman_image_create_bits(fmt->pixman_format,
width, height,
buffer->data, stride);
buffer->buf->data,
buffer->buf->strides[0]);
abort_oom_if_null(buffer->image);
return buffer;
@ -151,8 +121,7 @@ screenshooter_buffer_destroy(struct screenshooter_buffer *buffer)
return;
pixman_image_unref(buffer->image);
munmap(buffer->data, buffer->len);
wl_buffer_destroy(buffer->wl_buffer);
client_buffer_util_destroy_buffer(buffer->buf);
free(buffer);
}
@ -305,7 +274,7 @@ screenshooter_output_capture(struct screenshooter_output *output)
abort_oom_if_null(output->buffer);
weston_capture_source_v1_capture(output->source,
output->buffer->wl_buffer);
output->buffer->buf->wl_buffer);
output->app->waitcount++;
}