Merge pull request #140 from emersion/screenshooter

Add screenshooter

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;

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.
  */

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);
 };
 

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;

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