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_display *display;
  41
  42         void *user_data;
  43         char *device_name;
  44
  45         struct wayland_drm_callbacks *callbacks;
  46 };
  47
  48 struct wl_drm_buffer {
  49         struct wl_buffer buffer;
  50         struct wl_drm *drm;
  51         uint32_t format;
  52
  53         void *driver_buffer;
  54 };
  55
  56 static void
  57 buffer_damage(struct wl_client *client, struct wl_resource *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)
  64 {
  65         struct wl_drm_buffer *buffer = resource->data;
  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_resource *resource)
  75 {
  76         wl_resource_destroy(resource, 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_resource *resource,
  86                   uint32_t id, uint32_t name, int32_t width, int32_t height,
  87                   uint32_t stride, uint32_t format)
  88 {
  89         struct wl_drm *drm = resource->data;
  90         struct wl_drm_buffer *buffer;
  91
  92         switch (format) {
  93         case WL_DRM_FORMAT_ARGB32:
  94         case WL_DRM_FORMAT_PREMULTIPLIED_ARGB32:
  95         case WL_DRM_FORMAT_XRGB32:
  96                 break;
  97         default:
  98                 wl_resource_post_error(resource,
  99                                        WL_DRM_ERROR_INVALID_FORMAT,
 100                                        "invalid format");
 101                 return;
 102         }
 103
 104         buffer = calloc(1, sizeof *buffer);
 105         if (buffer == NULL) {
 106                 wl_client_post_no_memory(resource->client);
 107                 return;
 108         }
 109
 110         buffer->drm = drm;
 111         buffer->buffer.width = width;
 112         buffer->buffer.height = height;
 113         buffer->format = format;
 114
 115         buffer->driver_buffer =
 116                 drm->callbacks->reference_buffer(drm->user_data, name,
 117                                                  width, height,
 118                                                  stride, format);
 119
 120         if (buffer->driver_buffer == NULL) {
 121                 wl_resource_post_error(resource,
 122                                        WL_DRM_ERROR_INVALID_NAME,
 123                                        "invalid name");
 124                 return;
 125         }
 126
 127         buffer->buffer.resource.object.id = id;
 128         buffer->buffer.resource.object.interface = &wl_buffer_interface;
 129         buffer->buffer.resource.object.implementation =
 130                 (void (**)(void)) &drm_buffer_interface;
 131         buffer->buffer.resource.data = buffer;
 132
 133         buffer->buffer.resource.destroy = destroy_buffer;
 134         buffer->buffer.resource.client = resource->client;
 135
 136         wl_client_add_resource(resource->client, &buffer->buffer.resource);
 137 }
 138
 139 static void
 140 drm_authenticate(struct wl_client *client,
 141                  struct wl_resource *resource, uint32_t id)
 142 {
 143         struct wl_drm *drm = resource->data;
 144
 145         if (drm->callbacks->authenticate(drm->user_data, id) < 0)
 146                 wl_resource_post_error(resource,
 147                                        WL_DRM_ERROR_AUTHENTICATE_FAIL,
 148                                        "authenicate failed");
 149         else
 150                 wl_resource_post_event(resource, WL_DRM_AUTHENTICATED);
 151 }
 152
 153 const static struct wl_drm_interface drm_interface = {
 154         drm_authenticate,
 155         drm_create_buffer
 156 };
 157
 158 static void
 159 bind_drm(struct wl_client *client, void *data, uint32_t version, uint32_t id)
 160 {
 161         struct wl_drm *drm = data;
 162         struct wl_resource *resource;
 163
 164         resource = wl_client_add_object(client, &wl_drm_interface,
 165                                         &drm_interface, id, data);
 166         wl_resource_post_event(resource, WL_DRM_DEVICE, drm->device_name);
 167         wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_ARGB32);
 168         wl_resource_post_event(resource, WL_DRM_FORMAT,
 169                                WL_DRM_FORMAT_PREMULTIPLIED_ARGB32);
 170         wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_XRGB32);
 171 }
 172
 173 struct wl_drm *
 174 wayland_drm_init(struct wl_display *display, char *device_name,
 175                  struct wayland_drm_callbacks *callbacks, void *user_data)
 176 {
 177         struct wl_drm *drm;
 178
 179         drm = malloc(sizeof *drm);
 180
 181         drm->display = display;
 182         drm->device_name = strdup(device_name);
 183         drm->callbacks = callbacks;
 184         drm->user_data = user_data;
 185
 186         wl_display_add_global(display, &wl_drm_interface, drm, bind_drm);
 187
 188         return drm;
 189 }
 190
 191 void
 192 wayland_drm_uninit(struct wl_drm *drm)
 193 {
 194         free(drm->device_name);
 195
 196         /* FIXME: need wl_display_del_{object,global} */
 197
 198         free(drm);
 199 }
 200
 201 int
 202 wayland_buffer_is_drm(struct wl_buffer *buffer)
 203 {
 204         return buffer->resource.object.implementation ==
 205                 (void (**)(void)) &drm_buffer_interface;
 206 }
 207
 208 void *
 209 wayland_drm_buffer_get_buffer(struct wl_buffer *buffer_base)
 210 {
 211         struct wl_drm_buffer *buffer = (struct wl_drm_buffer *) buffer_base;
 212
 213         return buffer->driver_buffer;
 214 }