diff options
| -rw-r--r-- | examples/meson.build | 6 | ||||
| -rw-r--r-- | examples/screenshot.c | 288 | ||||
| -rw-r--r-- | include/rootston/desktop.h | 2 | ||||
| -rw-r--r-- | include/wlr/render.h | 15 | ||||
| -rw-r--r-- | include/wlr/render/interface.h | 2 | ||||
| -rw-r--r-- | include/wlr/types/wlr_output.h | 1 | ||||
| -rw-r--r-- | include/wlr/types/wlr_screenshooter.h | 26 | ||||
| -rw-r--r-- | protocol/meson.build | 7 | ||||
| -rw-r--r-- | protocol/screenshooter.xml | 16 | ||||
| -rw-r--r-- | render/gles2/renderer.c | 19 | ||||
| -rw-r--r-- | render/wlr_renderer.c | 5 | ||||
| -rw-r--r-- | rootston/desktop.c | 13 | ||||
| -rw-r--r-- | types/meson.build | 1 | ||||
| -rw-r--r-- | types/wlr_output.c | 3 | ||||
| -rw-r--r-- | types/wlr_screenshooter.c | 163 |
15 files changed, 553 insertions, 14 deletions
diff --git a/examples/meson.build b/examples/meson.build index 6ec40843..a29a3310 100644 --- a/examples/meson.build +++ b/examples/meson.build @@ -22,3 +22,9 @@ executable( dependencies: wlroots, link_with: lib_shared, ) + +executable( + 'screenshot', + 'screenshot.c', + dependencies: [wayland_client, wlr_protos], +) diff --git a/examples/screenshot.c b/examples/screenshot.c new file mode 100644 index 00000000..95af49ca --- /dev/null +++ b/examples/screenshot.c @@ -0,0 +1,288 @@ +/* + * Copyright © 2008 Kristian Høgsberg + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#define _XOPEN_SOURCE 700 +#define _POSIX_C_SOURCE 199309L +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/mman.h> +#include <sys/wait.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <wayland-client.h> +#include <limits.h> +#include <sys/param.h> +#include <screenshooter-client-protocol.h> +#include "../backend/wayland/os-compatibility.c" + +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; + +struct screenshooter_output { + struct wl_output *output; + struct wl_buffer *buffer; + int width, height, offset_x, offset_y; + void *data; + 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; + } +} + +static void output_handle_mode(void *data, struct wl_output *wl_output, + uint32_t flags, int width, int height, int refresh) { + struct screenshooter_output *output = wl_output_get_user_data(wl_output); + + if (wl_output == output->output && (flags & WL_OUTPUT_MODE_CURRENT)) { + output->width = width; + output->height = height; + } +} + +static void output_handle_done(void *data, struct wl_output *wl_output) { + +} + +static const struct wl_output_listener output_listener = { + .geometry = output_handle_geometry, + .mode = output_handle_mode, + .done = output_handle_done, +}; + +static void screenshot_done(void *data, struct orbital_screenshot *screenshot) { + buffer_copy_done = 1; +} + +static const struct orbital_screenshot_listener screenshot_listener = { + .done = screenshot_done, +}; + +static void handle_global(void *data, struct wl_registry *registry, + uint32_t name, const char *interface, uint32_t version) { + static struct screenshooter_output *output; + + if (strcmp(interface, "wl_output") == 0) { + output = calloc(1, sizeof *output); + output->output = wl_registry_bind(registry, name, &wl_output_interface, + 1); + wl_list_insert(&output_list, &output->link); + wl_output_add_listener(output->output, &output_listener, output); + } else if (strcmp(interface, "wl_shm") == 0) { + shm = wl_registry_bind(registry, name, &wl_shm_interface, 1); + } else if (strcmp(interface, "orbital_screenshooter") == 0) { + screenshooter = wl_registry_bind(registry, name, + &orbital_screenshooter_interface, 1); + } +} + +static void handle_global_remove(void *data, struct wl_registry *registry, + uint32_t name) { + // Unimplemented +} + +static const struct wl_registry_listener registry_listener = { + .global = handle_global, + .global_remove = handle_global_remove, +}; + +static struct wl_buffer *create_shm_buffer(int width, int height, + void **data_out) { + int stride = width * 4; + int size = stride * height; + + int fd = os_create_anonymous_file(size); + if (fd < 0) { + fprintf(stderr, "creating a buffer file for %d B failed: %m\n", size); + return NULL; + } + + void *data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); + if (data == MAP_FAILED) { + fprintf(stderr, "mmap failed: %m\n"); + close(fd); + return NULL; + } + + struct wl_shm_pool *pool = wl_shm_create_pool(shm, fd, size); + close(fd); + struct wl_buffer *buffer = wl_shm_pool_create_buffer(pool, 0, width, height, + stride, WL_SHM_FORMAT_XRGB8888); + wl_shm_pool_destroy(pool); + + *data_out = data; + + 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; + + 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; + void *s = output->data; + void *d = data + (output->offset_y - min_y) * buffer_stride + + (output->offset_x - min_x) * 4; + + for (int i = 0; i < output->height; i++) { + memcpy(d, s, output_stride); + d += buffer_stride; + s += output_stride; + } + + 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); + + int fd[2]; + pipe(fd); + + pid_t child = fork(); + if (child < 0) { + fprintf(stderr, "fork() failed\n"); + exit(EXIT_FAILURE); + } else if (child != 0) { + close(fd[0]); + write(fd[1], data, buffer_stride * height); + close(fd[1]); + free(data); + waitpid(child, NULL, 0); + } else { + close(fd[1]); + if (dup2(fd[0], 0) != 0) { + fprintf(stderr, "cannot dup the pipe\n"); + exit(EXIT_FAILURE); + } + close(fd[0]); + execlp("convert", "convert", "-depth", "8", "-size", size, "rgba:-", + "-alpha", "opaque", filename, NULL); + fprintf(stderr, "cannot execute convert\n"); + exit(EXIT_FAILURE); + } +} + +static int set_buffer_size(int *width, int *height) { + struct screenshooter_output *output; + min_x = min_y = INT_MAX; + max_x = max_y = INT_MIN; + int position = 0; + + wl_list_for_each_reverse(output, &output_list, link) { + output->offset_x = position; + position += output->width; + } + + wl_list_for_each(output, &output_list, link) { + min_x = MIN(min_x, output->offset_x); + min_y = MIN(min_y, output->offset_y); + max_x = MAX(max_x, output->offset_x + output->width); + max_y = MAX(max_y, output->offset_y + output->height); + } + + 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[]) { + struct wl_display * display = wl_display_connect(NULL); + if (display == NULL) { + fprintf(stderr, "failed to create display: %m\n"); + return -1; + } + + wl_list_init(&output_list); + struct wl_registry *registry = wl_display_get_registry(display); + wl_registry_add_listener(registry, ®istry_listener, NULL); + wl_display_dispatch(display); + wl_display_roundtrip(display); + + if (screenshooter == NULL) { + fprintf(stderr, "display doesn't support screenshooter\n"); + return -1; + } + + int width, height; + if (set_buffer_size(&width, &height)) { + fprintf(stderr, "cannot set buffer size\n"); + return -1; + } + + struct screenshooter_output *output; + wl_list_for_each(output, &output_list, link) { + if (output->width == 0 || output->height == 0) { + continue; + } + + output->buffer = create_shm_buffer(output->width, output->height, &output->data); + if (output->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; + while (!buffer_copy_done) + wl_display_roundtrip(display); + } + + write_image("wayland-screenshot.png", width, height); + return EXIT_SUCCESS; +} diff --git a/include/rootston/desktop.h b/include/rootston/desktop.h index 0d641848..68fc5b94 100644 --- a/include/rootston/desktop.h +++ b/include/rootston/desktop.h @@ -8,6 +8,7 @@ #include <wlr/types/wlr_wl_shell.h> #include <wlr/types/wlr_xdg_shell_v6.h> #include <wlr/types/wlr_gamma_control.h> +#include <wlr/types/wlr_screenshooter.h> #include <wlr/util/list.h> #include "rootston/view.h" #include "rootston/config.h" @@ -36,6 +37,7 @@ struct roots_desktop { struct wlr_xdg_shell_v6 *xdg_shell_v6; struct wlr_xwayland *xwayland; struct wlr_gamma_control_manager *gamma_control_manager; + struct wlr_screenshooter *screenshooter; struct wl_listener output_add; struct wl_listener output_remove; diff --git a/include/wlr/render.h b/include/wlr/render.h index 2fbfb476..5027064d 100644 --- a/include/wlr/render.h +++ b/include/wlr/render.h @@ -30,27 +30,32 @@ struct wlr_texture *wlr_render_texture_create(struct wlr_renderer *r); * This will render the texture at <123, 321>. */ bool wlr_render_with_matrix(struct wlr_renderer *r, - struct wlr_texture *texture, const float (*matrix)[16]); + struct wlr_texture *texture, const float (*matrix)[16]); /** * Renders a solid quad in the specified color. */ void wlr_render_colored_quad(struct wlr_renderer *r, - const float (*color)[4], const float (*matrix)[16]); + const float (*color)[4], const float (*matrix)[16]); /** * Renders a solid ellipse in the specified color. */ void wlr_render_colored_ellipse(struct wlr_renderer *r, - const float (*color)[4], const float (*matrix)[16]); + const float (*color)[4], const float (*matrix)[16]); /** * Returns a list of pixel formats supported by this renderer. */ const enum wl_shm_format *wlr_renderer_get_formats( - struct wlr_renderer *r, size_t *len); + struct wlr_renderer *r, size_t *len); /** * Returns true if this wl_buffer is a DRM buffer. */ bool wlr_renderer_buffer_is_drm(struct wlr_renderer *renderer, - struct wl_resource *buffer); + struct wl_resource *buffer); +/** + * Reads pixels and stores them in out_data as ARGB8888. + */ +void wlr_renderer_read_pixels(struct wlr_renderer *r, int x, int y, + int width, int height, void *out_data); /** * Destroys this wlr_renderer. Textures must be destroyed separately. */ diff --git a/include/wlr/render/interface.h b/include/wlr/render/interface.h index cbe33822..bbc5acb4 100644 --- a/include/wlr/render/interface.h +++ b/include/wlr/render/interface.h @@ -28,6 +28,8 @@ 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); void (*destroy)(struct wlr_renderer *renderer); }; diff --git a/include/wlr/types/wlr_output.h b/include/wlr/types/wlr_output.h index 1fa6ad9e..52d377e3 100644 --- a/include/wlr/types/wlr_output.h +++ b/include/wlr/types/wlr_output.h @@ -37,6 +37,7 @@ struct wlr_output { struct { struct wl_signal frame; + struct wl_signal swap_buffers; struct wl_signal resolution; struct wl_signal destroy; } events; diff --git a/include/wlr/types/wlr_screenshooter.h b/include/wlr/types/wlr_screenshooter.h new file mode 100644 index 00000000..4bda3d3c --- /dev/null +++ b/include/wlr/types/wlr_screenshooter.h @@ -0,0 +1,26 @@ +#ifndef _WLR_SCREENSHOOTER_H +#define _WLR_SCREENSHOOTER_H +#include <wayland-server.h> + +struct wlr_screenshooter { + struct wl_global *wl_global; + struct wlr_renderer *renderer; + + void *data; +}; + +struct wlr_screenshot { + struct wl_resource *resource; + struct wl_resource *output_resource; + + struct wlr_output *output; + struct wlr_screenshooter *screenshooter; + + void* data; +}; + +struct wlr_screenshooter *wlr_screenshooter_create(struct wl_display *display, + struct wlr_renderer *renderer); +void wlr_screenshooter_destroy(struct wlr_screenshooter *screenshooter); + +#endif diff --git a/protocol/meson.build b/protocol/meson.build index 6dc88d76..79871fea 100644 --- a/protocol/meson.build +++ b/protocol/meson.build @@ -22,11 +22,14 @@ wayland_scanner_client = generator( protocols = [ [wl_protocol_dir, 'unstable/xdg-shell/xdg-shell-unstable-v6.xml'], - 'gamma-control.xml' + 'gamma-control.xml', + 'screenshooter.xml', ] client_protocols = [ - [wl_protocol_dir, 'unstable/xdg-shell/xdg-shell-unstable-v6.xml'] + [wl_protocol_dir, 'unstable/xdg-shell/xdg-shell-unstable-v6.xml'], + 'gamma-control.xml', + 'screenshooter.xml', ] wl_protos_src = [] diff --git a/protocol/screenshooter.xml b/protocol/screenshooter.xml new file mode 100644 index 00000000..fc48eac9 --- /dev/null +++ b/protocol/screenshooter.xml @@ -0,0 +1,16 @@ +<protocol name="orbital_screenshooter"> + + <interface name="orbital_screenshooter" version="1"> + <request name="shoot"> + <arg name="id" type="new_id" interface="orbital_screenshot"/> + <arg name="output" type="object" interface="wl_output"/> + <arg name="buffer" type="object" interface="wl_buffer"/> + </request> + </interface> + + <interface name="orbital_screenshot" version="1"> + <event name="done"> + </event> + </interface> + +</protocol> diff --git a/render/gles2/renderer.c b/render/gles2/renderer.c index 325e1571..94c50b9a 100644 --- a/render/gles2/renderer.c +++ b/render/gles2/renderer.c @@ -208,7 +208,23 @@ static bool wlr_gles2_buffer_is_drm(struct wlr_renderer *_renderer, (struct wlr_gles2_renderer *)_renderer; EGLint format; return wlr_egl_query_buffer(renderer->egl, buffer, - EGL_TEXTURE_FORMAT, &format); + 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 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 struct wlr_renderer_impl wlr_renderer_impl = { @@ -220,6 +236,7 @@ static struct wlr_renderer_impl wlr_renderer_impl = { .render_ellipse = wlr_gles2_render_ellipse, .formats = wlr_gles2_formats, .buffer_is_drm = wlr_gles2_buffer_is_drm, + .read_pixels = wlr_gles2_read_pixels, }; struct wlr_renderer *wlr_gles2_renderer_create(struct wlr_backend *backend) { diff --git a/render/wlr_renderer.c b/render/wlr_renderer.c index fec5e38a..ef0c31be 100644 --- a/render/wlr_renderer.c +++ b/render/wlr_renderer.c @@ -51,3 +51,8 @@ bool wlr_renderer_buffer_is_drm(struct wlr_renderer *r, struct wl_resource *buffer) { 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); +} diff --git a/rootston/desktop.c b/rootston/desktop.c index 555d592f..3d9b2120 100644 --- a/rootston/desktop.c +++ b/rootston/desktop.c @@ -208,16 +208,15 @@ struct roots_desktop *desktop_create(struct roots_server *server, wl_list_init(&desktop->output_remove.link); desktop->output_remove.notify = output_remove_notify; - wl_signal_add(&server->backend->events.output_add, - &desktop->output_add); + wl_signal_add(&server->backend->events.output_add, &desktop->output_add); wl_signal_add(&server->backend->events.output_remove, - &desktop->output_remove); + &desktop->output_remove); desktop->server = server; desktop->config = config; desktop->layout = wlr_output_layout_create(); - desktop->compositor = wlr_compositor_create( - server->wl_display, server->renderer); + desktop->compositor = wlr_compositor_create(server->wl_display, + server->renderer); desktop->xdg_shell_v6 = wlr_xdg_shell_v6_create(server->wl_display); wl_signal_add(&desktop->xdg_shell_v6->events.new_surface, @@ -236,7 +235,9 @@ struct roots_desktop *desktop_create(struct roots_server *server, desktop->xwayland_surface.notify = handle_xwayland_surface; desktop->gamma_control_manager = wlr_gamma_control_manager_create( - server->wl_display); + server->wl_display); + desktop->screenshooter = wlr_screenshooter_create(server->wl_display, + server->renderer); return desktop; } diff --git a/types/meson.build b/types/meson.build index cff40150..a151e8a3 100644 --- a/types/meson.build +++ b/types/meson.build @@ -20,6 +20,7 @@ lib_wlr_types = static_library( 'wlr_compositor.c', 'wlr_box.c', 'wlr_gamma_control.c', + 'wlr_screenshooter.c', ), include_directories: wlr_inc, dependencies: [wayland_server, pixman, wlr_protos], diff --git a/types/wlr_output.c b/types/wlr_output.c index f167a213..64f67f2d 100644 --- a/types/wlr_output.c +++ b/types/wlr_output.c @@ -105,6 +105,7 @@ void wlr_output_init(struct wlr_output *output, output->transform = WL_OUTPUT_TRANSFORM_NORMAL; output->scale = 1; wl_signal_init(&output->events.frame); + wl_signal_init(&output->events.swap_buffers); wl_signal_init(&output->events.resolution); wl_signal_init(&output->events.destroy); } @@ -231,6 +232,8 @@ void wlr_output_swap_buffers(struct wlr_output *output) { wlr_render_with_matrix(output->cursor.renderer, output->cursor.texture, &matrix); } + wl_signal_emit(&output->events.swap_buffers, &output); + output->impl->swap_buffers(output); } diff --git a/types/wlr_screenshooter.c b/types/wlr_screenshooter.c new file mode 100644 index 00000000..38204aa1 --- /dev/null +++ b/types/wlr_screenshooter.c @@ -0,0 +1,163 @@ +#include <assert.h> +#include <stdlib.h> +#include <string.h> +#include <wayland-server.h> +#include <wlr/render.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; +}; + +static void output_frame_notify(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; + + wlr_output_make_current(output); + wlr_renderer_read_pixels(renderer, 0, 0, output->width, output->height, + state->pixels); + + 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); + + orbital_screenshot_send_done(state->screenshot->resource); + + free(state); +} + +static void screenshooter_shoot(struct wl_client *client, + struct wl_resource *_screenshooter, uint32_t id, + struct wl_resource *_output, struct wl_resource *_buffer) { + struct wlr_screenshooter *screenshooter = + wl_resource_get_user_data(_screenshooter); + struct wlr_output *output = wl_resource_get_user_data(_output); + if (!wl_shm_buffer_get(_buffer)) { + wlr_log(L_ERROR, "Invalid buffer: not a shared memory buffer"); + return; + } + struct wl_shm_buffer *shm_buffer = wl_shm_buffer_get(_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); + 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) { + 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) { + wl_client_post_no_memory(client); + return; + } + screenshot->output_resource = _output; + screenshot->output = output; + screenshot->screenshooter = screenshooter; + screenshot->resource = wl_resource_create(client, + &orbital_screenshot_interface, wl_resource_get_version(_screenshooter), + id); + wlr_log(L_DEBUG, "new screenshot %p (res %p)", screenshot, + screenshot->resource); + wl_resource_set_implementation(screenshot->resource, NULL, screenshot, + NULL); + + struct screenshot_state *state = calloc(1, sizeof(struct screenshot_state)); + if (!state) { + wl_client_post_no_memory(client); + 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; + wl_signal_add(&output->events.swap_buffers, &state->frame_listener); +} + +static struct orbital_screenshooter_interface screenshooter_impl = { + .shoot = screenshooter_shoot, +}; + +static void screenshooter_bind(struct wl_client *wl_client, + void *_screenshooter, uint32_t version, uint32_t id) { + struct wlr_screenshooter *screenshooter = _screenshooter; + assert(wl_client && screenshooter); + if (version > 1) { + wlr_log(L_ERROR, "Client requested unsupported screenshooter version," + "disconnecting"); + wl_client_destroy(wl_client); + return; + } + struct wl_resource *wl_resource = wl_resource_create(wl_client, + &orbital_screenshooter_interface, version, id); + wl_resource_set_implementation(wl_resource, &screenshooter_impl, + screenshooter, NULL); +} + +struct wlr_screenshooter *wlr_screenshooter_create(struct wl_display *display, + struct wlr_renderer *renderer) { + struct wlr_screenshooter *screenshooter = + calloc(1, sizeof(struct wlr_screenshooter)); + if (!screenshooter) { + return NULL; + } + screenshooter->renderer = renderer; + + struct wl_global *wl_global = wl_global_create(display, + &orbital_screenshooter_interface, 1, screenshooter, screenshooter_bind); + if (!wl_global) { + free(screenshooter); + return NULL; + } + screenshooter->wl_global = wl_global; + + return screenshooter; +} + +void wlr_screenshooter_destroy(struct wlr_screenshooter *screenshooter) { + if (!screenshooter) { + return; + } + // TODO: this segfault (wl_display->registry_resource_list is not init) + // wl_global_destroy(screenshooter->wl_global); + free(screenshooter); +} |