Rework wayland backend output implementation

.gitignore

@@ -3,6 +3,7 @@ CMakeFiles
 Makefile
 cmake_install.cmake
 install_manifest.txt
+.clang_complete
 *.swp
 *.o
 *.a

backend/CMakeLists.txt

@@ -9,7 +9,7 @@ add_library(wlr-backend
     wayland/backend.c
     wayland/registry.c
     wayland/wl_seat.c
-    wayland/wl_output.c
+    wayland/output.c
     drm/backend.c
     drm/drm.c
 

backend/egl.c

@@ -73,6 +73,7 @@ static bool egl_get_config(EGLDisplay disp, EGLConfig *out) {
 
 	ret = eglGetConfigs(disp, NULL, 0, &count);
 	if (ret == EGL_FALSE || count == 0) {
+		wlr_log(L_ERROR, "eglGetConfigs returned no configs");
 		return false;
 	}
 
@@ -80,12 +81,19 @@ static bool egl_get_config(EGLDisplay disp, EGLConfig *out) {
 
 	ret = eglChooseConfig(disp, NULL, configs, count, &matched);
 	if (ret == EGL_FALSE) {
+		wlr_log(L_ERROR, "eglChooseConfig failed");
 		return false;
 	}
 
 	for (int i = 0; i < matched; ++i) {
 		EGLint gbm_format;
 
+		// TODO, see below
+		// best would probably be to propagate parameter or config
+		// choose callback
+		*out = configs[i];
+		return true;
+
 		if (!eglGetConfigAttrib(disp,
 					configs[i],
 					EGL_NATIVE_VISUAL_ID,
@@ -101,6 +109,7 @@ static bool egl_get_config(EGLDisplay disp, EGLConfig *out) {
 		}
 	}
 
+	wlr_log(L_ERROR, "no valid egl config found");
 	return false;
 }
 

backend/wayland/backend.c

@@ -6,6 +6,8 @@
 #include <wlr/types.h>
 #include "backend/wayland.h"
 #include "common/log.h"
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
 
 /*
  * Initializes the wayland backend. Opens a connection to a remote wayland
@@ -26,7 +28,20 @@ static bool wlr_wl_backend_init(struct wlr_backend_state* state) {
 		return false;
 	}
 
-	wlr_wlb_registry_poll(state);
+	wlr_wl_registry_poll(state);
+	if (!(state->compositor) || (!(state->shell))) {
+		wlr_log_errno(L_ERROR, "Could not obtain retrieve required globals");
+		return false;
+	}
+
+	wlr_egl_init(&state->egl, EGL_PLATFORM_WAYLAND_KHR, state->remote_display);
+	for(size_t i = 0; i < state->num_outputs; ++i) {
+		if(!(state->outputs[i] = wlr_wl_output_create(state, i))) {
+			wlr_log_errno(L_ERROR, "Failed to create %zuth output", i);
+			return false;
+		}
+	}
+
 	return true;
 }
 
@@ -35,13 +50,12 @@ static void wlr_wl_backend_destroy(struct wlr_backend_state *state) {
 		return;
 	}
 
-	// TODO: Free surfaces
-	for (size_t i = 0; state->outputs && i < state->outputs->length; ++i) {
-		struct wlr_output *output = state->outputs->items[i];
-		wlr_output_destroy(output);
+	for (size_t i = 0; i < state->num_outputs; ++i) {
+		wlr_output_destroy(state->outputs[i]);
 	}
 
-	list_free(state->outputs);
+	wlr_egl_free(&state->egl);
+	free(state->outputs);
 	if (state->seat) wl_seat_destroy(state->seat);
 	if (state->shm) wl_shm_destroy(state->shm);
 	if (state->shell) wl_shell_destroy(state->shell);
@@ -58,7 +72,7 @@ static struct wlr_backend_impl backend_impl = {
 
 
 struct wlr_backend *wlr_wl_backend_create(struct wl_display *display,
-		size_t outputs) {
+		size_t num_outputs) {
 	wlr_log(L_INFO, "Creating wayland backend");
 
 	struct wlr_backend_state *state = calloc(1, sizeof(struct wlr_backend_state));
@@ -73,22 +87,28 @@ struct wlr_backend *wlr_wl_backend_create(struct wl_display *display,
 		return NULL;
 	}
 
-	if (!(state->outputs = list_create())) {
-		wlr_log(L_ERROR, "Could not allocate output list");
-		goto error;
-	}
-
 	if (!(state->devices = list_create())) {
 		wlr_log(L_ERROR, "Could not allocate devices list");
 		goto error;
 	}
 
+	if (!(state->outputs = calloc(sizeof(void*), num_outputs))) {
+		wlr_log(L_ERROR, "Could not allocate outputs list");
+		goto error;
+	}
+
 	state->local_display = display;
 	state->backend = backend;
+	state->num_outputs = num_outputs;
 
 	return backend;
 
 error:
+	if (state) {
+		free(state->outputs);
+		free(state->devices);
+		free(state->devices);
+	}
 	free(state);
 	free(backend);
 	return NULL;

backend/wayland/output.c

@@ -0,0 +1,93 @@
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wayland-client.h>
+#include <wlr/types.h>
+#include "types.h"
+#include "backend/wayland.h"
+#include "common/log.h"
+
+// TODO
+static void wlr_wl_output_enable(struct wlr_output_state *output, bool enable) {
+}
+
+static bool wlr_wl_output_set_mode(struct wlr_output_state *output,
+		struct wlr_output_mode *mode) {
+	output->output->current_mode = mode;
+	return true;
+}
+
+static void wlr_wl_output_transform(struct wlr_output_state *output,
+		enum wl_output_transform transform) {
+}
+
+static bool wlr_wl_output_set_cursor(struct wlr_output_state *output,
+		const uint8_t *buf, int32_t stride, uint32_t width, uint32_t height) {
+	return false;
+}
+
+static bool wlr_wl_output_move_cursor(struct wlr_output_state *output,
+		int x, int y) {
+	return false;
+}
+
+static void wlr_wl_output_destroy(struct wlr_output_state *output) {
+	// TODO: free egl surface
+	wl_shell_surface_destroy(output->shell_surface);
+	wl_surface_destroy(output->surface);
+	free(output);
+}
+
+static struct wlr_output_impl output_impl = {
+	.enable = wlr_wl_output_enable,
+	.set_mode = wlr_wl_output_set_mode,
+	.transform = wlr_wl_output_transform,
+	.set_cursor = wlr_wl_output_set_cursor,
+	.move_cursor = wlr_wl_output_move_cursor,
+	.destroy = wlr_wl_output_destroy,
+};
+
+struct wlr_output *wlr_wl_output_create(struct wlr_backend_state* backend,
+		size_t id) {
+	// TODO: dont hardcode stuff like size
+	static unsigned int width = 1100;
+	static unsigned int height = 720;
+
+	struct wlr_output_state *ostate;
+	if (!(ostate = calloc(sizeof(struct wlr_output_state), 1))) {
+		wlr_log(L_ERROR, "Failed to allocate wlr_output_state");
+		return NULL;
+	}
+
+	struct wlr_output *wlr_output = wlr_output_create(&output_impl, ostate);
+	if (!wlr_output) {
+		free(ostate);
+		wlr_log_errno(L_ERROR, "Allocation failed");
+		return NULL;
+	}
+
+	wlr_output->width = width;
+	wlr_output->height = height;
+	wlr_output->scale = 1;
+	strncpy(wlr_output->make, "wayland-output", sizeof(wlr_output->make));
+	strncpy(wlr_output->model, "wayland-output", sizeof(wlr_output->model));
+	strncpy(wlr_output->name, "wayland-output", sizeof(wlr_output->name));
+
+	struct wlr_output_mode mode = {
+		.width = width,
+		.height = height,
+		.refresh = 60,
+		.flags = 0,
+	};
+	list_add(wlr_output->modes, &mode);
+
+	ostate->id = id;
+	ostate->output = wlr_output;
+	ostate->surface = wl_compositor_create_surface(backend->compositor);
+	ostate->shell_surface = wl_shell_get_shell_surface(backend->shell, ostate->surface);
+	ostate->egl_window = wl_egl_window_create(ostate->surface, width, height);
+	ostate->egl_surface = wlr_egl_create_surface(&backend->egl, ostate->egl_window);
+
+	wl_signal_emit(&backend->backend->events.output_add, wlr_output);
+	return wlr_output;
+}

backend/wayland/registry.c

@@ -7,65 +7,6 @@
 #include "backend/wayland.h"
 #include "common/log.h"
 
-// TODO
-static void wlr_wl_output_enable(struct wlr_output_state *output, bool enable) {
-}
-
-static bool wlr_wl_output_set_mode(struct wlr_output_state *output,
-		struct wlr_output_mode *mode) {
-	return false;
-}
-
-static void wlr_wl_output_transform(struct wlr_output_state *output,
-		enum wl_output_transform transform) {
-}
-
-static bool wlr_wl_output_set_cursor(struct wlr_output_state *output,
-		const uint8_t *buf, int32_t stride, uint32_t width, uint32_t height) {
-	return false;
-}
-
-static bool wlr_wl_output_move_cursor(struct wlr_output_state *output,
-		int x, int y) {
-	return false;
-}
-
-static void wlr_wl_output_destroy(struct wlr_output_state *output) {
-	free(output);
-}
-
-static struct wlr_output_impl output_impl = {
-	.enable = wlr_wl_output_enable,
-	.set_mode = wlr_wl_output_set_mode,
-	.transform = wlr_wl_output_transform,
-	.set_cursor = wlr_wl_output_set_cursor,
-	.move_cursor = wlr_wl_output_move_cursor,
-	.destroy = wlr_wl_output_destroy,
-};
-
-static void registry_wl_output(struct wlr_backend_state *state,
-		struct wl_output *wl_output, struct wl_registry *registry,
-		uint32_t version) {
-	struct wlr_output_state *ostate;
-	if (!(ostate = calloc(sizeof(struct wlr_output_state), 1))) {
-		wlr_log(L_ERROR, "Failed to allocate wlr_wl_output");
-		return;
-	}
-
-	struct wlr_output *wlr_output = wlr_output_create(&output_impl, ostate);
-	if (!wlr_output) {
-		free(ostate);
-		wlr_log_errno(L_ERROR, "Allocation failed");
-		return;
-	}
-
-	ostate->output = wl_output;
-	list_add(state->outputs, wlr_output);
-	wl_output_add_listener(wl_output, &output_listener, wlr_output);
-	wl_signal_emit(&state->backend->events.output_add, wlr_output);
-	return;
-}
-
 static void registry_global(void *data, struct wl_registry *registry,
 		uint32_t name, const char *interface, uint32_t version) {
 	struct wlr_backend_state *state = data;
@@ -84,10 +25,6 @@ static void registry_global(void *data, struct wl_registry *registry,
 		state->seat = wl_registry_bind(registry, name,
 				&wl_seat_interface, version);
 		wl_seat_add_listener(state->seat, &seat_listener, state);
-	} else if (strcmp(interface, wl_output_interface.name) == 0) {
-		struct wl_output *wl_output = wl_registry_bind(registry, name,
-				&wl_output_interface, version);
-		registry_wl_output(state, wl_output, registry, version);
 	}
 }
 
@@ -101,7 +38,7 @@ static const struct wl_registry_listener registry_listener = {
 	.global_remove = registry_global_remove
 };
 
-void wlr_wlb_registry_poll(struct wlr_backend_state *state) {
+void wlr_wl_registry_poll(struct wlr_backend_state *state) {
 	wl_registry_add_listener(state->registry, &registry_listener, state);
 	wl_display_dispatch(state->remote_display);
 	wl_display_roundtrip(state->remote_display);

backend/wayland/wl_output.c

@@ -1,71 +0,0 @@
-#define _XOPEN_SOURCE 500
-#include <string.h>
-#include <assert.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <wayland-client.h>
-#include <wlr/types.h>
-#include "types.h"
-#include "backend/wayland.h"
-#include "common/log.h"
-
-static void wl_output_handle_mode(void *data, struct wl_output *wl_output,
-		     uint32_t flags, int32_t width, int32_t height, int32_t refresh) {
-	struct wlr_output *output = data;
-	assert(output->state->output == wl_output);
-	struct wlr_output_mode *mode;
-	if (!(mode = calloc(sizeof(struct wlr_output_mode), 1))) {
-		wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
-		return;
-	}
-
-	mode->flags = flags;
-	mode->width = width;
-	mode->height = height;
-	mode->refresh = refresh;
-	list_add(output->modes, mode);
-
-	wlr_log(L_DEBUG, "Got mode for output %p: %dx%d @ %.2fHz%s%s",
-			wl_output, width, height, refresh / 1000.0,
-			(flags & WL_OUTPUT_MODE_PREFERRED) ? " (preferred)" : "",
-			(flags & WL_OUTPUT_MODE_CURRENT) ? " (current)" : "");
-}
-
-static void wl_output_handle_geometry(void *data, struct wl_output *wl_output,
-			 int32_t x, int32_t y, int32_t physical_width, int32_t physical_height,
-			 int32_t subpixel, const char *make, const char *model, int32_t transform) {
-	struct wlr_output *output = data;
-	assert(output->state->output == wl_output);
-
-	// TODO
-	// output->x = x;
-	// output->y = y;
-
-	output->phys_width = physical_width;
-	output->phys_height = physical_height;
-	output->subpixel = subpixel;
-	strncpy(output->make, make, sizeof(output->make));
-	strncpy(output->model, model, sizeof(output->model));
-	output->transform = transform;
-	wlr_log(L_DEBUG, "Got info for output %p %dx%d (%dmm x %dmm) %s %s",
-			wl_output, (int)x, (int)y, (int)physical_width, (int)physical_height,
-			make, model);
-}
-
-static void wl_output_handle_scale(void *data, struct wl_output *wl_output, int32_t factor) {
-	struct wlr_output *output = data;
-	assert(output->state->output == wl_output);
-	output->scale = factor;
-	wlr_log(L_DEBUG, "Got scale factor for output %p: %d", wl_output, factor);
-}
-
-static void wl_output_handle_done(void *data, struct wl_output *wl_output) {
-	// TODO: notify of changes? Probably not necessary for this backend
-}
-
-const struct wl_output_listener output_listener = {
-	.mode = wl_output_handle_mode,
-	.geometry = wl_output_handle_geometry,
-	.scale = wl_output_handle_scale,
-	.done = wl_output_handle_done
-};

include/backend/wayland.h

@@ -3,8 +3,10 @@
 
 #include <wayland-client.h>
 #include <wayland-server.h>
+#include <wayland-egl.h>
 #include <wlr/common/list.h>
 #include <wlr/backend/wayland.h>
+#include "backend/egl.h"
 
 struct wlr_backend_state {
 	/* local state */
@@ -19,20 +21,31 @@ struct wlr_backend_state {
 	const char *seatName;
 
 	struct wlr_backend *backend;
-	list_t *outputs;
 	list_t *devices;
+
+	size_t num_outputs;
+	struct wlr_output **outputs;
+	struct wlr_egl egl;
 };
 
 struct wlr_output_state {
-	struct wl_output* output;
+	size_t id;
+	struct wlr_output *output;
+	struct wl_surface *surface;
+	struct wl_shell_surface *shell_surface;
+	struct wl_egl_window* egl_window;
+	void* egl_surface;
 };
 
 struct wlr_input_device_state {
+	enum wlr_input_device_type type;
+	void *resource;
 };
 
-void wlr_wlb_registry_poll(struct wlr_backend_state *backend);
+void wlr_wl_registry_poll(struct wlr_backend_state *backend);
+struct wlr_output *wlr_wl_output_create(struct wlr_backend_state* backend,
+		size_t id);
 
 extern const struct wl_seat_listener seat_listener;
-extern const struct wl_output_listener output_listener;
 
 #endif