Add missing drm.c

drm.c

@@ -0,0 +1,163 @@
+/*
+ * Copyright © 2010 Kristian Høgsberg
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "compositor.h"
+
+static void
+drm_authenticate(struct wl_client *client,
+		 struct wl_drm *drm_base, uint32_t id)
+{
+	struct wlsc_drm *drm = (struct wlsc_drm *) drm_base;
+	struct wlsc_compositor *compositor =
+		container_of(drm, struct wlsc_compositor, drm);
+
+	if (compositor->authenticate(compositor, id) < 0)
+		wl_client_post_event(client,
+				     (struct wl_object *) compositor->wl_display,
+				     WL_DISPLAY_INVALID_OBJECT, 0);
+	else
+		wl_client_post_event(client, &drm->base, WL_DRM_AUTHENTICATED);
+}
+
+static void
+destroy_buffer(struct wl_resource *resource, struct wl_client *client)
+{
+	struct wlsc_buffer *buffer =
+		container_of(resource, struct wlsc_buffer, base.base);
+
+#if 0
+	/* FIXME: Need backlink to EGL display here */
+	eglDestroyImageKHR(ec->display, buffer->image);
+#endif
+
+	free(buffer);
+}
+
+static void
+buffer_destroy(struct wl_client *client, struct wl_buffer *buffer)
+{
+	wl_resource_destroy(&buffer->base, client);
+}
+
+const static struct wl_buffer_interface buffer_interface = {
+	buffer_destroy
+};
+
+static void
+drm_create_buffer(struct wl_client *client, struct wl_drm *drm_base,
+		  uint32_t id, uint32_t name, int32_t width, int32_t height,
+		  uint32_t stride, struct wl_visual *visual)
+{
+	struct wlsc_drm *drm = (struct wlsc_drm *) drm_base;
+	struct wlsc_compositor *compositor =
+		container_of(drm, struct wlsc_compositor, drm);
+	struct wlsc_buffer *buffer;
+	EGLint attribs[] = {
+		EGL_WIDTH,		0,
+		EGL_HEIGHT,		0,
+		EGL_IMAGE_STRIDE_MESA,	0,
+		EGL_IMAGE_FORMAT_MESA,	EGL_IMAGE_FORMAT_ARGB8888_MESA,
+		EGL_NONE
+	};
+
+	if (visual != &compositor->argb_visual &&
+	    visual != &compositor->premultiplied_argb_visual &&
+	    visual != &compositor->rgb_visual) {
+		/* FIXME: Define a real exception event instead of
+		 * abusing this one */
+		wl_client_post_event(client,
+				     (struct wl_object *) compositor->wl_display,
+				     WL_DISPLAY_INVALID_OBJECT, 0);
+		fprintf(stderr, "invalid visual in create_buffer\n");
+		return;
+	}
+
+	buffer = malloc(sizeof *buffer);
+	if (buffer == NULL) {
+		wl_client_post_event(client,
+				     (struct wl_object *) compositor->wl_display,
+				     WL_DISPLAY_NO_MEMORY, 0);
+		return;
+	}
+
+	attribs[1] = width;
+	attribs[3] = height;
+	attribs[5] = stride / 4;
+
+	buffer->width = width;
+	buffer->height = height;
+	buffer->visual = visual;
+	buffer->image = eglCreateImageKHR(compositor->display,
+					  compositor->context,
+					  EGL_DRM_IMAGE_MESA,
+					  (EGLClientBuffer) name, attribs);
+	if (buffer->image == NULL) {
+		/* FIXME: Define a real exception event instead of
+		 * abusing this one */
+		free(buffer);
+		wl_client_post_event(client,
+				     (struct wl_object *) compositor->wl_display,
+				     WL_DISPLAY_INVALID_OBJECT, 0);
+		fprintf(stderr, "failed to create image for name %d\n", name);
+		return;
+	}
+
+	buffer->base.base.base.id = id;
+	buffer->base.base.base.interface = &wl_buffer_interface;
+	buffer->base.base.base.implementation = (void (**)(void))
+		&buffer_interface;
+
+	buffer->base.base.destroy = destroy_buffer;
+
+	wl_client_add_resource(client, &buffer->base.base);
+}
+
+const static struct wl_drm_interface drm_interface = {
+	drm_authenticate,
+	drm_create_buffer
+};
+
+static void
+post_drm_device(struct wl_client *client, struct wl_object *global)
+{
+	struct wlsc_drm *drm = container_of(global, struct wlsc_drm, base);
+
+	wl_client_post_event(client, global, WL_DRM_DEVICE, drm->filename);
+}
+
+int
+wlsc_drm_init(struct wlsc_compositor *ec, int fd, const char *filename)
+{
+	struct wlsc_drm *drm = &ec->drm;
+
+	drm->fd = fd;
+	drm->filename = strdup(filename);
+	if (drm->filename == NULL)
+		return -1;
+
+	drm->base.interface = &wl_drm_interface;
+	drm->base.implementation = (void (**)(void)) &drm_interface;
+	wl_display_add_object(ec->wl_display, &drm->base);
+	wl_display_add_global(ec->wl_display, &drm->base, post_drm_device);
+
+	return 0;
+}