Merge pull request #992 from emersion/screencontent

Implement wlr_export_dmabuf_unstable_v1 protocol

7 files changed, 68 insertions, 3 deletions

diff --git a/include/wlr/interfaces/wlr_output.h b/include/wlr/interfaces/wlr_output.h
index 7ecc7551..8f87408a 100644
--- a/include/wlr/interfaces/wlr_output.h
+++ b/include/wlr/interfaces/wlr_output.h
@@ -23,6 +23,8 @@ struct wlr_output_impl {
 	void (*set_gamma)(struct wlr_output *output,
 		uint32_t size, uint16_t *r, uint16_t *g, uint16_t *b);
 	uint32_t (*get_gamma_size)(struct wlr_output *output);
+	bool (*export_dmabuf)(struct wlr_output *output,
+		struct wlr_dmabuf_attributes *attribs);
 };
 
 void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,
diff --git a/include/wlr/render/dmabuf.h b/include/wlr/render/dmabuf.h
index 2e13fe75..78f8c2eb 100644
--- a/include/wlr/render/dmabuf.h
+++ b/include/wlr/render/dmabuf.h
@@ -1,6 +1,8 @@
 #ifndef WLR_RENDER_DMABUF_H
 #define WLR_RENDER_DMABUF_H
 
+#include <stdint.h>
+
 // So we don't have to pull in linux specific drm headers
 #ifndef DRM_FORMAT_MOD_INVALID
 #define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
@@ -26,4 +28,9 @@ struct wlr_dmabuf_attributes {
 	int fd[WLR_DMABUF_MAX_PLANES];
 };
 
+/**
+ * Closes all file descriptors in the DMA-BUF attributes.
+ */
+void wlr_dmabuf_attributes_finish(struct wlr_dmabuf_attributes *attribs);
+
 #endif
diff --git a/include/wlr/render/egl.h b/include/wlr/render/egl.h
index 0f591d60..6b887f4f 100644
--- a/include/wlr/render/egl.h
+++ b/include/wlr/render/egl.h
@@ -18,9 +18,10 @@ struct wlr_egl {
 	struct {
 		bool bind_wayland_display_wl;
 		bool buffer_age_ext;
-		bool image_dmabuf_import_modifiers_ext;
-		bool image_dmabuf_import_ext;
 		bool image_base_khr;
+		bool image_dma_buf_export_mesa;
+		bool image_dmabuf_import_ext;
+		bool image_dmabuf_import_modifiers_ext;
 		bool swap_buffers_with_damage_ext;
 		bool swap_buffers_with_damage_khr;
 	} exts;
@@ -80,6 +81,10 @@ int wlr_egl_get_dmabuf_formats(struct wlr_egl *egl, int **formats);
 int wlr_egl_get_dmabuf_modifiers(struct wlr_egl *egl, int format,
 	uint64_t **modifiers);
 
+bool wlr_egl_export_image_to_dmabuf(struct wlr_egl *egl, EGLImageKHR image,
+	int32_t width, int32_t height, uint32_t flags,
+	struct wlr_dmabuf_attributes *attribs);
+
 /**
  * Destroys an EGL image created with the given wlr_egl.
  */
diff --git a/include/wlr/render/interface.h b/include/wlr/render/interface.h
index 80788858..fb427c89 100644
--- a/include/wlr/render/interface.h
+++ b/include/wlr/render/interface.h
@@ -60,6 +60,8 @@ struct wlr_texture_impl {
 		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, const void *data);
+	bool (*to_dmabuf)(struct wlr_texture *texture,
+		struct wlr_dmabuf_attributes *attribs);
 	void (*destroy)(struct wlr_texture *texture);
 };
 
diff --git a/include/wlr/render/wlr_texture.h b/include/wlr/render/wlr_texture.h
index c1633820..785f4fc6 100644
--- a/include/wlr/render/wlr_texture.h
+++ b/include/wlr/render/wlr_texture.h
@@ -48,6 +48,9 @@ bool wlr_texture_write_pixels(struct wlr_texture *texture,
 	uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y,
 	const void *data);
 
+bool wlr_texture_to_dmabuf(struct wlr_texture *texture,
+	struct wlr_dmabuf_attributes *attribs);
+
 /**
  * Destroys this wlr_texture.
  */
diff --git a/include/wlr/types/wlr_export_dmabuf_v1.h b/include/wlr/types/wlr_export_dmabuf_v1.h
new file mode 100644
index 00000000..a094b3de
--- /dev/null
+++ b/include/wlr/types/wlr_export_dmabuf_v1.h
@@ -0,0 +1,37 @@
+#ifndef WLR_TYPES_WLR_EXPORT_DMABUF_V1_H
+#define WLR_TYPES_WLR_EXPORT_DMABUF_V1_H
+
+#include <wayland-server.h>
+#include <wlr/render/dmabuf.h>
+
+struct wlr_export_dmabuf_manager_v1;
+
+struct wlr_export_dmabuf_frame_v1 {
+	struct wl_resource *resource;
+	struct wlr_export_dmabuf_manager_v1 *manager;
+	struct wl_list link;
+
+	struct wlr_dmabuf_attributes attribs;
+	struct wlr_output *output;
+
+	struct wl_listener output_swap_buffers;
+};
+
+struct wlr_export_dmabuf_manager_v1 {
+	struct wl_global *global;
+	struct wl_list resources;
+	struct wl_list frames;
+
+	struct wl_listener display_destroy;
+
+	struct {
+		struct wl_signal destroy;
+	} events;
+};
+
+struct wlr_export_dmabuf_manager_v1 *wlr_export_dmabuf_manager_v1_create(
+	struct wl_display *display);
+void wlr_export_dmabuf_manager_v1_destroy(
+	struct wlr_export_dmabuf_manager_v1 *manager);
+
+#endif
diff --git a/include/wlr/types/wlr_output.h b/include/wlr/types/wlr_output.h
index cef3fc5d..158d174e 100644
--- a/include/wlr/types/wlr_output.h
+++ b/include/wlr/types/wlr_output.h
@@ -6,6 +6,7 @@
 #include <time.h>
 #include <wayland-server.h>
 #include <wayland-util.h>
+#include <wlr/types/wlr_linux_dmabuf.h>
 
 struct wlr_output_mode {
 	uint32_t flags; // enum wl_output_mode
@@ -81,7 +82,7 @@ struct wlr_output {
 	struct {
 		struct wl_signal frame;
 		struct wl_signal needs_swap;
-		struct wl_signal swap_buffers;
+		struct wl_signal swap_buffers; // wlr_output_event_swap_buffers
 		struct wl_signal enable;
 		struct wl_signal mode;
 		struct wl_signal scale;
@@ -107,6 +108,12 @@ struct wlr_output {
 	void *data;
 };
 
+struct wlr_output_event_swap_buffers {
+	struct wlr_output *output;
+	struct timespec *when;
+	pixman_region32_t *damage;
+};
+
 struct wlr_surface;
 
 void wlr_output_enable(struct wlr_output *output, bool enable);
@@ -162,6 +169,8 @@ void wlr_output_schedule_frame(struct wlr_output *output);
 void wlr_output_set_gamma(struct wlr_output *output,
 	uint32_t size, uint16_t *r, uint16_t *g, uint16_t *b);
 uint32_t wlr_output_get_gamma_size(struct wlr_output *output);
+bool wlr_output_export_dmabuf(struct wlr_output *output,
+	struct wlr_dmabuf_attributes *attribs);
 void wlr_output_set_fullscreen_surface(struct wlr_output *output,
 	struct wlr_surface *surface);
 struct wlr_output *wlr_output_from_resource(struct wl_resource *resource);