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 /* Git master of Wayland is moving towards a stable version of the
  40  * protocol, but breaking from 0.85 in the process.  For the time
  41  * being, it's convenient to be able to build Mesa against both master
  42  * and 0.85.x of Wayland.  To make this work we'll do a compile-time
  43  * version check and work around the difference in API and protocol */
  44 #if defined (WAYLAND_VERSION_MAJOR) &&          \
  45         WAYLAND_VERSION_MAJOR == 0 &&           \
  46         WAYLAND_VERSION_MINOR == 85
  47 #define HAS_WAYLAND_0_85
  48 #endif
  49
  50 struct wl_drm {
  51         struct wl_display *display;
  52
  53         void *user_data;
  54         char *device_name;
  55
  56         struct wayland_drm_callbacks *callbacks;
  57 };
  58
  59 struct wl_drm_buffer {
  60         struct wl_buffer buffer;
  61         struct wl_drm *drm;
  62         uint32_t format;
  63
  64         void *driver_buffer;
  65 };
  66
  67 static void
  68 destroy_buffer(struct wl_resource *resource)
  69 {
  70         struct wl_drm_buffer *buffer = resource->data;
  71         struct wl_drm *drm = buffer->drm;
  72
  73         drm->callbacks->release_buffer(drm->user_data,
  74                                        buffer->driver_buffer);
  75         free(buffer);
  76 }
  77
  78 static void
  79 buffer_destroy(struct wl_client *client, struct wl_resource *resource)
  80 {
  81 #ifdef HAS_WAYLAND_0_85
  82         wl_resource_destroy(resource, 0);
  83 #else
  84         wl_resource_destroy(resource);
  85 #endif
  86 }
  87
  88 #ifdef HAS_WAYLAND_0_85
  89 static void
  90 buffer_damage(struct wl_client *client, struct wl_resource *buffer,
  91               int32_t x, int32_t y, int32_t width, int32_t height)
  92 {
  93 }
  94 #endif
  95
  96 const static struct wl_buffer_interface drm_buffer_interface = {
  97 #ifdef HAS_WAYLAND_0_85
  98         buffer_damage,
  99 #endif
 100         buffer_destroy
 101 };
 102
 103 static void
 104 drm_create_buffer(struct wl_client *client, struct wl_resource *resource,
 105                   uint32_t id, uint32_t name, int32_t width, int32_t height,
 106                   uint32_t stride, uint32_t format)
 107 {
 108         struct wl_drm *drm = resource->data;
 109         struct wl_drm_buffer *buffer;
 110
 111         switch (format) {
 112         case WL_DRM_FORMAT_ARGB8888:
 113         case WL_DRM_FORMAT_XRGB8888:
 114                 break;
 115         default:
 116                 wl_resource_post_error(resource,
 117                                        WL_DRM_ERROR_INVALID_FORMAT,
 118                                        "invalid format");
 119                 return;
 120         }
 121
 122         buffer = calloc(1, sizeof *buffer);
 123         if (buffer == NULL) {
 124                 wl_resource_post_no_memory(resource);
 125                 return;
 126         }
 127
 128         buffer->drm = drm;
 129         buffer->buffer.width = width;
 130         buffer->buffer.height = height;
 131         buffer->format = format;
 132
 133         buffer->driver_buffer =
 134                 drm->callbacks->reference_buffer(drm->user_data, name,
 135                                                  width, height,
 136                                                  stride, format);
 137
 138         if (buffer->driver_buffer == NULL) {
 139                 wl_resource_post_error(resource,
 140                                        WL_DRM_ERROR_INVALID_NAME,
 141                                        "invalid name");
 142                 return;
 143         }
 144
 145         buffer->buffer.resource.object.id = id;
 146         buffer->buffer.resource.object.interface = &wl_buffer_interface;
 147         buffer->buffer.resource.object.implementation =
 148                 (void (**)(void)) &drm_buffer_interface;
 149         buffer->buffer.resource.data = buffer;
 150
 151         buffer->buffer.resource.destroy = destroy_buffer;
 152         buffer->buffer.resource.client = resource->client;
 153
 154         wl_client_add_resource(resource->client, &buffer->buffer.resource);
 155 }
 156
 157 static void
 158 drm_authenticate(struct wl_client *client,
 159                  struct wl_resource *resource, uint32_t id)
 160 {
 161         struct wl_drm *drm = resource->data;
 162
 163         if (drm->callbacks->authenticate(drm->user_data, id) < 0)
 164                 wl_resource_post_error(resource,
 165                                        WL_DRM_ERROR_AUTHENTICATE_FAIL,
 166                                        "authenicate failed");
 167         else
 168                 wl_resource_post_event(resource, WL_DRM_AUTHENTICATED);
 169 }
 170
 171 const static struct wl_drm_interface drm_interface = {
 172         drm_authenticate,
 173         drm_create_buffer
 174 };
 175
 176 static void
 177 bind_drm(struct wl_client *client, void *data, uint32_t version, uint32_t id)
 178 {
 179         struct wl_drm *drm = data;
 180         struct wl_resource *resource;
 181
 182         resource = wl_client_add_object(client, &wl_drm_interface,
 183                                         &drm_interface, id, data);
 184         wl_resource_post_event(resource, WL_DRM_DEVICE, drm->device_name);
 185         wl_resource_post_event(resource, WL_DRM_FORMAT,
 186                                WL_DRM_FORMAT_ARGB8888);
 187         wl_resource_post_event(resource, WL_DRM_FORMAT,
 188                                WL_DRM_FORMAT_XRGB8888);
 189 }
 190
 191 struct wl_drm *
 192 wayland_drm_init(struct wl_display *display, char *device_name,
 193                  struct wayland_drm_callbacks *callbacks, void *user_data)
 194 {
 195         struct wl_drm *drm;
 196
 197         drm = malloc(sizeof *drm);
 198
 199         drm->display = display;
 200         drm->device_name = strdup(device_name);
 201         drm->callbacks = callbacks;
 202         drm->user_data = user_data;
 203
 204         wl_display_add_global(display, &wl_drm_interface, drm, bind_drm);
 205
 206         return drm;
 207 }
 208
 209 void
 210 wayland_drm_uninit(struct wl_drm *drm)
 211 {
 212         free(drm->device_name);
 213
 214         /* FIXME: need wl_display_del_{object,global} */
 215
 216         free(drm);
 217 }
 218
 219 int
 220 wayland_buffer_is_drm(struct wl_buffer *buffer)
 221 {
 222         return buffer->resource.object.implementation ==
 223                 (void (**)(void)) &drm_buffer_interface;
 224 }
 225
 226 uint32_t
 227 wayland_drm_buffer_get_format(struct wl_buffer *buffer_base)
 228 {
 229         struct wl_drm_buffer *buffer = (struct wl_drm_buffer *) buffer_base;
 230
 231         return buffer->format;
 232 }
 233
 234 void *
 235 wayland_drm_buffer_get_buffer(struct wl_buffer *buffer_base)
 236 {
 237         struct wl_drm_buffer *buffer = (struct wl_drm_buffer *) buffer_base;
 238
 239         return buffer->driver_buffer;
 240 }