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Backport screenshooter fixes from the renderer redesign v1 

This backports some changes to #319 to fix the screenshooter data
format. This also adds wlr_backend_get_renderer which will be
useful to support multiple renderers.
This commit is contained in:
emersion 2018-01-23 22:06:54 +01:00
parent 03440bbd83
commit 4fa90b0511
No known key found for this signature in database
GPG Key ID: 0FDE7BE0E88F5E48
21 changed files with 178 additions and 97 deletions
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7
backend/backend.c
View File

@ -52,6 +52,13 @@ struct wlr_egl *wlr_backend_get_egl(struct wlr_backend *backend) {
return NULL;
}
struct wlr_renderer *wlr_backend_get_renderer(struct wlr_backend *backend) {
if (backend->impl->get_renderer) {
return backend->impl->get_renderer(backend);
}
return NULL;
}
static struct wlr_backend *attempt_wl_backend(struct wl_display *display) {
struct wlr_backend *backend = wlr_wl_backend_create(display, NULL);
if (backend) {

9
backend/drm/backend.c
View File

@ -50,10 +50,17 @@ static struct wlr_egl *wlr_drm_backend_get_egl(struct wlr_backend *backend) {
return &drm->renderer.egl;
}
static struct wlr_renderer *wlr_drm_backend_get_renderer(
struct wlr_backend *backend) {
struct wlr_drm_backend *drm = (struct wlr_drm_backend *)backend;
return drm->renderer.wlr_rend;
}
static struct wlr_backend_impl backend_impl = {
.start = wlr_drm_backend_start,
.destroy = wlr_drm_backend_destroy,
.get_egl = wlr_drm_backend_get_egl
.get_egl = wlr_drm_backend_get_egl,
.get_renderer = wlr_drm_backend_get_renderer,
};
bool wlr_backend_is_drm(struct wlr_backend *b) {

17
backend/headless/backend.c
View File

@ -1,6 +1,6 @@
#include <stdlib.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <wlr/render/egl.h>
#include <wlr/render/gles2.h>
#include <wlr/util/log.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/interfaces/wlr_input_device.h>
@ -61,10 +61,18 @@ static struct wlr_egl *backend_get_egl(struct wlr_backend *wlr_backend) {
return &backend->egl;
}
static struct wlr_renderer *backend_get_renderer(
struct wlr_backend *wlr_backend) {
struct wlr_headless_backend *backend =
(struct wlr_headless_backend *)wlr_backend;
return backend->renderer;
}
static const struct wlr_backend_impl backend_impl = {
.start = backend_start,
.destroy = backend_destroy,
.get_egl = backend_get_egl,
.get_renderer = backend_get_renderer,
};
static void handle_display_destroy(struct wl_listener *listener, void *data) {
@ -103,6 +111,11 @@ struct wlr_backend *wlr_headless_backend_create(struct wl_display *display) {
return NULL;
}
backend->renderer = wlr_gles2_renderer_create(&backend->backend);
if (backend->renderer == NULL) {
wlr_log(L_ERROR, "Failed to create renderer");
}
backend->display_destroy.notify = handle_display_destroy;
wl_display_add_destroy_listener(display, &backend->display_destroy);

14
backend/multi/backend.c
View File

@ -62,10 +62,24 @@ static struct wlr_egl *multi_backend_get_egl(struct wlr_backend *wlr_backend) {
return NULL;
}
static struct wlr_renderer *multi_backend_get_renderer(
struct wlr_backend *backend) {
struct wlr_multi_backend *multi = (struct wlr_multi_backend *)backend;
struct subbackend_state *sub;
wl_list_for_each(sub, &multi->backends, link) {
struct wlr_renderer *rend = wlr_backend_get_renderer(sub->backend);
if (rend != NULL) {
return rend;
}
}
return NULL;
}
struct wlr_backend_impl backend_impl = {
.start = multi_backend_start,
.destroy = multi_backend_destroy,
.get_egl = multi_backend_get_egl,
.get_renderer = multi_backend_get_renderer,
};
static void handle_display_destroy(struct wl_listener *listener, void *data) {

22
backend/wayland/backend.c
View File

@ -6,6 +6,7 @@
#include <EGL/eglext.h>
#include <wayland-server.h>
#include <wlr/render/egl.h>
#include <wlr/render/gles2.h>
#include <wlr/backend/interface.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/interfaces/wlr_input_device.h>
@ -106,15 +107,22 @@ static void wlr_wl_backend_destroy(struct wlr_backend *_backend) {
free(backend);
}
static struct wlr_egl *wlr_wl_backend_get_egl(struct wlr_backend *_backend) {
struct wlr_wl_backend *backend = (struct wlr_wl_backend *)_backend;
static struct wlr_egl *wlr_wl_backend_get_egl(struct wlr_backend *wlr_backend) {
struct wlr_wl_backend *backend = (struct wlr_wl_backend *)wlr_backend;
return &backend->egl;
}
static struct wlr_renderer *wlr_wl_backend_get_renderer(
struct wlr_backend *wlr_backend) {
struct wlr_wl_backend *backend = (struct wlr_wl_backend *)wlr_backend;
return backend->renderer;
}
static struct wlr_backend_impl backend_impl = {
.start = wlr_wl_backend_start,
.destroy = wlr_wl_backend_destroy,
.get_egl = wlr_wl_backend_get_egl
.get_egl = wlr_wl_backend_get_egl,
.get_renderer = wlr_wl_backend_get_renderer,
};
bool wlr_backend_is_wl(struct wlr_backend *b) {
@ -191,7 +199,8 @@ struct wlr_backend *wlr_wl_backend_create(struct wl_display *display, const char
return false;
}
if (!(backend->registry = wl_display_get_registry(backend->remote_display))) {
backend->registry = wl_display_get_registry(backend->remote_display);
if (backend->registry == NULL) {
wlr_log_errno(L_ERROR, "Could not obtain reference to remote registry");
return false;
}
@ -200,6 +209,11 @@ struct wlr_backend *wlr_wl_backend_create(struct wl_display *display, const char
backend->remote_display, NULL, WL_SHM_FORMAT_ARGB8888);
wlr_egl_bind_display(&backend->egl, backend->local_display);
backend->renderer = wlr_gles2_renderer_create(&backend->backend);
if (backend->renderer == NULL) {
wlr_log_errno(L_ERROR, "Could not create renderer");
}
backend->local_display_destroy.notify = handle_display_destroy;
wl_display_add_destroy_listener(display, &backend->local_display_destroy);

17
backend/x11/backend.c
View File

@ -16,6 +16,7 @@
#include <wlr/backend/interface.h>
#include <wlr/backend/x11.h>
#include <wlr/render/egl.h>
#include <wlr/render/gles2.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/interfaces/wlr_input_device.h>
#include <wlr/interfaces/wlr_keyboard.h>
@ -272,16 +273,23 @@ static struct wlr_egl *wlr_x11_backend_get_egl(struct wlr_backend *backend) {
return &x11->egl;
}
bool wlr_backend_is_x11(struct wlr_backend *backend) {
return backend->impl == &backend_impl;
static struct wlr_renderer *wlr_x11_backend_get_renderer(
struct wlr_backend *backend) {
struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
return x11->renderer;
}
static struct wlr_backend_impl backend_impl = {
.start = wlr_x11_backend_start,
.destroy = wlr_x11_backend_destroy,
.get_egl = wlr_x11_backend_get_egl,
.get_renderer = wlr_x11_backend_get_renderer,
};
bool wlr_backend_is_x11(struct wlr_backend *backend) {
return backend->impl == &backend_impl;
}
static void handle_display_destroy(struct wl_listener *listener, void *data) {
struct wlr_x11_backend *x11 =
wl_container_of(listener, x11, display_destroy);
@ -330,6 +338,11 @@ struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
goto error_event;
}
x11->renderer = wlr_gles2_renderer_create(&x11->backend);
if (x11->renderer == NULL) {
wlr_log(L_ERROR, "Failed to create renderer");
}
wlr_input_device_init(&x11->keyboard_dev, WLR_INPUT_DEVICE_KEYBOARD,
&input_device_impl, "X11 keyboard", 0, 0);
wlr_keyboard_init(&x11->keyboard, NULL);

18
examples/screenshot.c
View File

@ -74,7 +74,7 @@ static void output_handle_mode(void *data, struct wl_output *wl_output,
}
static void output_handle_done(void *data, struct wl_output *wl_output) {
// No-op
}
static const struct wl_output_listener output_listener = {
@ -148,16 +148,6 @@ static struct wl_buffer *create_shm_buffer(int width, int height,
return buffer;
}
static void argb_to_rgba(uint32_t *data, size_t height, size_t stride) {
size_t n = height*stride/4;
for (size_t i = 0; i < n; ++i) {
uint32_t v = data[i];
uint32_t rgb = v & 0x00ffffff;
uint32_t a = (v & 0xff000000) >> 24;
data[i] = (rgb << 8) | a;
}
}
static void write_image(const char *filename, int width, int height) {
int buffer_stride = width * 4;
@ -182,8 +172,6 @@ static void write_image(const char *filename, int width, int height) {
free(output);
}
argb_to_rgba(data, height, buffer_stride);
char size[10 + 1 + 10 + 2 + 1]; // int32_t are max 10 digits
sprintf(size, "%dx%d+0", width, height);
@ -213,7 +201,9 @@ static void write_image(const char *filename, int width, int height) {
exit(EXIT_FAILURE);
}
close(fd[0]);
execlp("convert", "convert", "-depth", "8", "-size", size, "rgba:-",
// 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);
fprintf(stderr, "cannot execute convert\n");
exit(EXIT_FAILURE);

1
include/backend/headless.h
View File

@ -7,6 +7,7 @@
struct wlr_headless_backend {
struct wlr_backend backend;
struct wlr_egl egl;
struct wlr_renderer *renderer;
struct wl_display *display;
struct wl_list outputs;
struct wl_list input_devices;

2
include/backend/wayland.h
View File

@ -6,6 +6,7 @@
#include <wayland-server.h>
#include <wayland-egl.h>
#include <wlr/render/egl.h>
#include <wlr/render.h>
#include <wlr/backend/wayland.h>
#include <wlr/types/wlr_box.h>
#include <wayland-util.h>
@ -19,6 +20,7 @@ struct wlr_wl_backend {
struct wl_list devices;
struct wl_list outputs;
struct wlr_egl egl;
struct wlr_renderer *renderer;
size_t requested_outputs;
struct wl_listener local_display_destroy;
/* remote state */

1
include/backend/x11.h
View File

@ -39,6 +39,7 @@ struct wlr_x11_backend {
struct wlr_input_device pointer_dev;
struct wlr_egl egl;
struct wlr_renderer *renderer;
struct wl_event_source *event_source;
struct wl_event_source *frame_timer;

1
include/wlr/backend.h
View File

@ -23,6 +23,7 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display);
bool wlr_backend_start(struct wlr_backend *backend);
void wlr_backend_destroy(struct wlr_backend *backend);
struct wlr_egl *wlr_backend_get_egl(struct wlr_backend *backend);
struct wlr_renderer *wlr_backend_get_renderer(struct wlr_backend *backend);
uint32_t usec_to_msec(uint64_t usec);

1
include/wlr/backend/interface.h
View File

@ -9,6 +9,7 @@ struct wlr_backend_impl {
bool (*start)(struct wlr_backend *backend);
void (*destroy)(struct wlr_backend *backend);
struct wlr_egl *(*get_egl)(struct wlr_backend *backend);
struct wlr_renderer *(*get_renderer)(struct wlr_backend *backend);
};
void wlr_backend_init(struct wlr_backend *backend,

13
include/wlr/render.h
View File

@ -52,10 +52,17 @@ const enum wl_shm_format *wlr_renderer_get_formats(
bool wlr_renderer_buffer_is_drm(struct wlr_renderer *renderer,
struct wl_resource *buffer);
/**
* Reads pixels and stores them in out_data as ARGB8888.
* Reads out of pixels of the currently bound surface into data. `stride` is in
* bytes.
*/
void wlr_renderer_read_pixels(struct wlr_renderer *r, int x, int y,
int width, int height, void *out_data);
bool wlr_renderer_read_pixels(struct wlr_renderer *r, enum wl_shm_format fmt,
uint32_t stride, uint32_t width, uint32_t height,
uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y, void *data);
/**
* Checks if a format is supported.
*/
bool wlr_renderer_format_supported(struct wlr_renderer *r,
enum wl_shm_format fmt);
/**
* Destroys this wlr_renderer. Textures must be destroyed separately.
*/

8
include/wlr/render/interface.h
View File

@ -28,8 +28,12 @@ struct wlr_renderer_impl {
struct wlr_renderer *renderer, size_t *len);
bool (*buffer_is_drm)(struct wlr_renderer *renderer,
struct wl_resource *buffer);
void (*read_pixels)(struct wlr_renderer *renderer, int x, int y, int width,
int height, void *out_data);
bool (*read_pixels)(struct wlr_renderer *renderer, enum wl_shm_format fmt,
uint32_t stride, uint32_t width, uint32_t height,
uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y,
void *data);
bool (*format_supported)(struct wlr_renderer *renderer,
enum wl_shm_format fmt);
void (*destroy)(struct wlr_renderer *renderer);
};

4
include/wlr/types/wlr_screenshooter.h
View File

@ -4,7 +4,6 @@
struct wlr_screenshooter {
struct wl_global *wl_global;
struct wlr_renderer *renderer;
struct wl_list screenshots; // wlr_screenshot::link
struct wl_listener display_destroy;
@ -23,8 +22,7 @@ struct wlr_screenshot {
void* data;
};
struct wlr_screenshooter *wlr_screenshooter_create(struct wl_display *display,
struct wlr_renderer *renderer);
struct wlr_screenshooter *wlr_screenshooter_create(struct wl_display *display);
void wlr_screenshooter_destroy(struct wlr_screenshooter *screenshooter);
#endif

5
render/gles2/pixel_format.c
View File

@ -2,7 +2,10 @@
#include <GLES2/gl2ext.h>
#include "render/gles2.h"
// Adapted from weston
/*
* The wayland formats are little endian while the GL formats are big endian,
* so WL_SHM_FORMAT_ARGB8888 is actually compatible with GL_BGRA_EXT.
*/
struct pixel_format formats[] = {
{
.wl_format = WL_SHM_FORMAT_ARGB8888,

36
render/gles2/renderer.c
View File

@ -211,20 +211,33 @@ static bool wlr_gles2_buffer_is_drm(struct wlr_renderer *_renderer,
EGL_TEXTURE_FORMAT, &format);
}
static void rgba_to_argb(uint32_t *data, size_t height, size_t stride) {
size_t n = height*stride/4;
for (size_t i = 0; i < n; ++i) {
uint32_t v = data[i];
uint32_t rgb = (v & 0xffffff00) >> 8;
uint32_t a = v & 0x000000ff;
data[i] = rgb | (a << 24);
static bool wlr_gles2_read_pixels(struct wlr_renderer *renderer,
enum wl_shm_format wl_fmt, uint32_t stride, uint32_t width,
uint32_t height, uint32_t src_x, uint32_t src_y, uint32_t dst_x,
uint32_t dst_y, void *data) {
const struct pixel_format *fmt = gl_format_for_wl_format(wl_fmt);
if (fmt == NULL) {
wlr_log(L_ERROR, "Cannot read pixels: unsupported pixel format");
return false;
}
// Make sure any pending drawing is finished before we try to read it
glFinish();
// Unfortunately GLES2 doesn't support GL_PACK_*, so we have to read
// the lines out row by row
unsigned char *p = data + dst_y * stride;
for (size_t i = src_y; i < src_y + height; ++i) {
glReadPixels(src_x, src_y + height - i - 1, width, 1, fmt->gl_format,
fmt->gl_type, p + i * stride + dst_x * 4);
}
return true;
}
static void wlr_gles2_read_pixels(struct wlr_renderer *renderer, int x, int y,
int width, int height, void *out_data) {
glReadPixels(x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, out_data);
rgba_to_argb(out_data, height, width*4);
static bool wlr_gles2_format_supported(struct wlr_renderer *r,
enum wl_shm_format wl_fmt) {
return gl_format_for_wl_format(wl_fmt);
}
static struct wlr_renderer_impl wlr_renderer_impl = {
@ -237,6 +250,7 @@ static struct wlr_renderer_impl wlr_renderer_impl = {
.formats = wlr_gles2_formats,
.buffer_is_drm = wlr_gles2_buffer_is_drm,
.read_pixels = wlr_gles2_read_pixels,
.format_supported = wlr_gles2_format_supported,
};
struct wlr_renderer *wlr_gles2_renderer_create(struct wlr_backend *backend) {

14
render/wlr_renderer.c
View File

@ -52,7 +52,15 @@ bool wlr_renderer_buffer_is_drm(struct wlr_renderer *r,
return r->impl->buffer_is_drm(r, buffer);
}
void wlr_renderer_read_pixels(struct wlr_renderer *r, int x, int y,
int width, int height, void *out_data) {
r->impl->read_pixels(r, x, y, width, height, out_data);
bool wlr_renderer_read_pixels(struct wlr_renderer *r, enum wl_shm_format fmt,
uint32_t stride, uint32_t width, uint32_t height,
uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y,
void *data) {
return r->impl->read_pixels(r, fmt, stride, width, height, src_x, src_y,
dst_x, dst_y, data);
}
bool wlr_renderer_format_supported(struct wlr_renderer *r,
enum wl_shm_format fmt) {
return r->impl->format_supported(r, fmt);
}

3
rootston/desktop.c
View File

@ -494,8 +494,7 @@ struct roots_desktop *desktop_create(struct roots_server *server,
desktop->gamma_control_manager = wlr_gamma_control_manager_create(
server->wl_display);
desktop->screenshooter = wlr_screenshooter_create(server->wl_display,
server->renderer);
desktop->screenshooter = wlr_screenshooter_create(server->wl_display);
desktop->server_decoration_manager =
wlr_server_decoration_manager_create(server->wl_display);
wlr_server_decoration_manager_set_default_mode(

4
rootston/main.c
View File

@ -8,7 +8,6 @@
#include <wlr/backend/headless.h>
#include <wlr/backend/multi.h>
#include <wlr/render.h>
#include <wlr/render/gles2.h>
#include <wlr/util/log.h>
#include "rootston/config.h"
#include "rootston/server.h"
@ -34,13 +33,12 @@ int main(int argc, char **argv) {
assert(server.wl_event_loop = wl_display_get_event_loop(server.wl_display));
server.backend = wlr_backend_autocreate(server.wl_display);
if (server.backend == NULL) {
wlr_log(L_ERROR, "could not start backend");
return 1;
}
assert(server.renderer = wlr_gles2_renderer_create(server.backend));
assert(server.renderer = wlr_backend_get_renderer(server.backend));
server.data_device_manager =
wlr_data_device_manager_create(server.wl_display);
wl_display_init_shm(server.wl_display);

78
types/wlr_screenshooter.c
View File

@ -3,24 +3,13 @@
#include <string.h>
#include <wayland-server.h>
#include <wlr/render.h>
#include <wlr/backend.h>
#include <wlr/types/wlr_screenshooter.h>
#include <wlr/types/wlr_output.h>
#include <wlr/util/log.h>
#include "screenshooter-protocol.h"
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) {
memcpy(dst, src, stride);
dst += stride;
src -= stride;
}
}
struct screenshot_state {
int32_t width, height, stride;
uint8_t *pixels;
struct wl_shm_buffer *shm_buffer;
struct wlr_screenshot *screenshot;
struct wl_listener frame_listener;
@ -41,27 +30,32 @@ static void handle_screenshot_resource_destroy(
}
}
static void output_frame_notify(struct wl_listener *listener, void *_data) {
static void output_handle_frame(struct wl_listener *listener, void *_data) {
struct screenshot_state *state = wl_container_of(listener, state,
frame_listener);
struct wlr_renderer *renderer = state->screenshot->screenshooter->renderer;
struct wlr_output *output = state->screenshot->output;
struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend);
struct wl_shm_buffer *shm_buffer = state->shm_buffer;
wlr_output_make_current(output);
wlr_renderer_read_pixels(renderer, 0, 0, output->width, output->height,
state->pixels);
enum wl_shm_format format = wl_shm_buffer_get_format(shm_buffer);
int32_t width = wl_shm_buffer_get_width(shm_buffer);
int32_t height = wl_shm_buffer_get_height(shm_buffer);
int32_t stride = wl_shm_buffer_get_stride(shm_buffer);
void *data = wl_shm_buffer_get_data(shm_buffer);
wl_shm_buffer_begin_access(shm_buffer);
bool ok = wlr_renderer_read_pixels(renderer, format, stride, width, height,
0, 0, 0, 0, data);
wl_shm_buffer_end_access(shm_buffer);
void *data = wl_shm_buffer_get_data(state->shm_buffer);
wl_shm_buffer_begin_access(state->shm_buffer);
copy_yflip(data, state->pixels + state->stride * (state->height - 1),
state->height, state->stride);
wl_shm_buffer_end_access(state->shm_buffer);
free(state->pixels);
wl_list_remove(&listener->link);
if (!ok) {
wlr_log(L_ERROR, "Cannot read pixels");
goto cleanup;
}
orbital_screenshot_send_done(state->screenshot->resource);
cleanup:
wl_list_remove(&listener->link);
free(state);
}
@ -72,35 +66,35 @@ static void screenshooter_shoot(struct wl_client *client,
struct wlr_screenshooter *screenshooter =
wl_resource_get_user_data(screenshooter_resource);
struct wlr_output *output = wl_resource_get_user_data(output_resource);
if (!wl_shm_buffer_get(buffer_resource)) {
struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend);
if (renderer == NULL) {
wlr_log(L_ERROR, "Backend doesn't have a renderer");
return;
}
struct wl_shm_buffer *shm_buffer = wl_shm_buffer_get(buffer_resource);
if (shm_buffer == NULL) {
wlr_log(L_ERROR, "Invalid buffer: not a shared memory buffer");
return;
}
struct wl_shm_buffer *shm_buffer = wl_shm_buffer_get(buffer_resource);
int32_t width = wl_shm_buffer_get_width(shm_buffer);
int32_t height = wl_shm_buffer_get_height(shm_buffer);
int32_t stride = wl_shm_buffer_get_stride(shm_buffer);
if (width < output->width || height < output->height) {
wlr_log(L_ERROR, "Invalid buffer: too small");
return;
}
uint32_t format = wl_shm_buffer_get_format(shm_buffer);
if (format != WL_SHM_FORMAT_XRGB8888) {
if (!wlr_renderer_format_supported(renderer, format)) {
wlr_log(L_ERROR, "Invalid buffer: unsupported format");
return;
}
uint8_t *pixels = malloc(stride * height);
if (pixels == NULL) {
wl_client_post_no_memory(client);
return;
}
struct wlr_screenshot *screenshot =
calloc(1, sizeof(struct wlr_screenshot));
if (!screenshot) {
free(pixels);
wl_resource_post_no_memory(screenshooter_resource);
return;
}
@ -112,7 +106,6 @@ static void screenshooter_shoot(struct wl_client *client,
wl_resource_get_version(screenshooter_resource), id);
if (screenshot->resource == NULL) {
free(screenshot);
free(pixels);
wl_resource_post_no_memory(screenshooter_resource);
return;
}
@ -127,17 +120,12 @@ static void screenshooter_shoot(struct wl_client *client,
if (!state) {
wl_resource_destroy(screenshot->resource);
free(screenshot);
free(pixels);
wl_resource_post_no_memory(screenshooter_resource);
return;
}
state->width = width;
state->height = height;
state->stride = stride;
state->pixels = pixels;
state->shm_buffer = shm_buffer;
state->screenshot = screenshot;
state->frame_listener.notify = output_frame_notify;
state->frame_listener.notify = output_handle_frame;
wl_signal_add(&output->events.swap_buffers, &state->frame_listener);
}
@ -179,14 +167,12 @@ static void handle_display_destroy(struct wl_listener *listener, void *data) {
wlr_screenshooter_destroy(screenshooter);
}
struct wlr_screenshooter *wlr_screenshooter_create(struct wl_display *display,
struct wlr_renderer *renderer) {
struct wlr_screenshooter *wlr_screenshooter_create(struct wl_display *display) {
struct wlr_screenshooter *screenshooter =
calloc(1, sizeof(struct wlr_screenshooter));
if (!screenshooter) {
return NULL;
}
screenshooter->renderer = renderer;
wl_list_init(&screenshooter->screenshots);