src/egl/wayland/wayland-drm/wayland-drm.c

   1 /*
   2  * Copyright © 2011 Kristian Høgsberg
   3  * Copyright © 2011 Benjamin Franzke
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  20  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Kristian Høgsberg <krh@bitplanet.net>
  27  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  28  */
  29
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <stddef.h>
  34
  35 #include <wayland-server.h>
  36 #include "wayland-drm.h"
  37 #include "wayland-drm-server-protocol.h"
  38
  39 struct wl_drm {
  40         struct wl_object object;
  41         struct wl_display *display;
  42
  43         void *user_data;
  44         char *device_name;
  45
  46         struct wayland_drm_callbacks *callbacks;
  47 };
  48
  49 struct wl_drm_buffer {
  50         struct wl_buffer buffer;
  51         struct wl_drm *drm;
  52
  53         void *driver_buffer;
  54 };
  55
  56 static void
  57 buffer_damage(struct wl_client *client, struct wl_buffer *buffer,
  58               int32_t x, int32_t y, int32_t width, int32_t height)
  59 {
  60 }
  61
  62 static void
  63 destroy_buffer(struct wl_resource *resource, struct wl_client *client)
  64 {
  65         struct wl_drm_buffer *buffer = (struct wl_drm_buffer *) resource;
  66         struct wl_drm *drm = buffer->drm;
  67
  68         drm->callbacks->release_buffer(drm->user_data,
  69                                        buffer->driver_buffer);
  70         free(buffer);
  71 }
  72
  73 static void
  74 buffer_destroy(struct wl_client *client, struct wl_buffer *buffer)
  75 {
  76         wl_resource_destroy(&buffer->resource, client, 0);
  77 }
  78
  79 const static struct wl_buffer_interface drm_buffer_interface = {
  80         buffer_damage,
  81         buffer_destroy
  82 };
  83
  84 static void
  85 drm_create_buffer(struct wl_client *client, struct wl_drm *drm,
  86                   uint32_t id, uint32_t name, int32_t width, int32_t height,
  87                   uint32_t stride, struct wl_visual *visual)
  88 {
  89         struct wl_drm_buffer *buffer;
  90
  91         buffer = calloc(1, sizeof *buffer);
  92         if (buffer == NULL) {
  93                 wl_client_post_no_memory(client);
  94                 return;
  95         }
  96
  97         buffer->drm = drm;
  98         buffer->buffer.width = width;
  99         buffer->buffer.height = height;
 100         buffer->buffer.visual = visual;
 101         buffer->buffer.client = client;
 102
 103         if (!visual || visual->object.interface != &wl_visual_interface) {
 104                 wl_client_post_error(client, &drm->object,
 105                                      WL_DRM_ERROR_INVALID_VISUAL,
 106                                      "invalid visual");
 107                 return;
 108         }
 109
 110         buffer->driver_buffer =
 111                 drm->callbacks->reference_buffer(drm->user_data, name,
 112                                                  width, height,
 113                                                  stride, visual);
 114
 115         if (buffer->driver_buffer == NULL) {
 116                 wl_client_post_error(client, &drm->object,
 117                                      WL_DRM_ERROR_INVALID_NAME,
 118                                      "invalid name");
 119                 return;
 120         }
 121
 122         buffer->buffer.resource.object.id = id;
 123         buffer->buffer.resource.object.interface = &wl_buffer_interface;
 124         buffer->buffer.resource.object.implementation = (void (**)(void))
 125                 &drm_buffer_interface;
 126
 127         buffer->buffer.resource.destroy = destroy_buffer;
 128
 129         wl_client_add_resource(client, &buffer->buffer.resource);
 130 }
 131
 132 static void
 133 drm_authenticate(struct wl_client *client,
 134                  struct wl_drm *drm, uint32_t id)
 135 {
 136         if (drm->callbacks->authenticate(drm->user_data, id) < 0)
 137                 wl_client_post_error(client, &drm->object,
 138                                      WL_DRM_ERROR_AUTHENTICATE_FAIL,
 139                                      "authenicate failed");
 140         else
 141                 wl_client_post_event(client, &drm->object,
 142                                      WL_DRM_AUTHENTICATED);
 143 }
 144
 145 const static struct wl_drm_interface drm_interface = {
 146         drm_authenticate,
 147         drm_create_buffer
 148 };
 149
 150 static void
 151 post_drm_device(struct wl_client *client,
 152                 struct wl_object *global, uint32_t version)
 153 {
 154         struct wl_drm *drm = (struct wl_drm *) global;
 155
 156         wl_client_post_event(client, global, WL_DRM_DEVICE, drm->device_name);
 157 }
 158
 159 struct wl_drm *
 160 wayland_drm_init(struct wl_display *display, char *device_name,
 161                  struct wayland_drm_callbacks *callbacks, void *user_data)
 162 {
 163         struct wl_drm *drm;
 164
 165         drm = malloc(sizeof *drm);
 166
 167         drm->display = display;
 168         drm->device_name = strdup(device_name);
 169         drm->callbacks = callbacks;
 170         drm->user_data = user_data;
 171
 172         drm->object.interface = &wl_drm_interface;
 173         drm->object.implementation = (void (**)(void)) &drm_interface;
 174         wl_display_add_object(display, &drm->object);
 175         wl_display_add_global(display, &drm->object, post_drm_device);
 176
 177         return drm;
 178 }
 179
 180 void
 181 wayland_drm_uninit(struct wl_drm *drm)
 182 {
 183         free(drm->device_name);
 184
 185         /* FIXME: need wl_display_del_{object,global} */
 186
 187         free(drm);
 188 }
 189
 190 int
 191 wayland_buffer_is_drm(struct wl_buffer *buffer)
 192 {
 193         return buffer->resource.object.implementation ==
 194                 (void (**)(void)) &drm_buffer_interface;
 195 }
 196
 197 void *
 198 wayland_drm_buffer_get_buffer(struct wl_buffer *buffer_base)
 199 {
 200         struct wl_drm_buffer *buffer = (struct wl_drm_buffer *) buffer_base;
 201
 202         return buffer->driver_buffer;
 203 }