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 destroy_buffer(struct wl_resource *resource)
  58 {
  59         struct wl_drm_buffer *buffer = resource->data;
  60         struct wl_drm *drm = buffer->drm;
  61
  62         drm->callbacks->release_buffer(drm->user_data,
  63                                        buffer->driver_buffer);
  64         free(buffer);
  65 }
  66
  67 static void
  68 buffer_destroy(struct wl_client *client, struct wl_resource *resource)
  69 {
  70         wl_resource_destroy(resource, 0);
  71 }
  72
  73 const static struct wl_buffer_interface drm_buffer_interface = {
  74         buffer_destroy
  75 };
  76
  77 static void
  78 drm_create_buffer(struct wl_client *client, struct wl_resource *resource,
  79                   uint32_t id, uint32_t name, int32_t width, int32_t height,
  80                   uint32_t stride, uint32_t format)
  81 {
  82         struct wl_drm *drm = resource->data;
  83         struct wl_drm_buffer *buffer;
  84
  85         switch (format) {
  86         case WL_DRM_FORMAT_ARGB8888:
  87         case WL_DRM_FORMAT_XRGB8888:
  88                 break;
  89         default:
  90                 wl_resource_post_error(resource,
  91                                        WL_DRM_ERROR_INVALID_FORMAT,
  92                                        "invalid format");
  93                 return;
  94         }
  95
  96         buffer = calloc(1, sizeof *buffer);
  97         if (buffer == NULL) {
  98                 wl_resource_post_no_memory(resource);
  99                 return;
 100         }
 101
 102         buffer->drm = drm;
 103         buffer->buffer.width = width;
 104         buffer->buffer.height = height;
 105         buffer->format = format;
 106
 107         buffer->driver_buffer =
 108                 drm->callbacks->reference_buffer(drm->user_data, name,
 109                                                  width, height,
 110                                                  stride, format);
 111
 112         if (buffer->driver_buffer == NULL) {
 113                 wl_resource_post_error(resource,
 114                                        WL_DRM_ERROR_INVALID_NAME,
 115                                        "invalid name");
 116                 return;
 117         }
 118
 119         buffer->buffer.resource.object.id = id;
 120         buffer->buffer.resource.object.interface = &wl_buffer_interface;
 121         buffer->buffer.resource.object.implementation =
 122                 (void (**)(void)) &drm_buffer_interface;
 123         buffer->buffer.resource.data = buffer;
 124
 125         buffer->buffer.resource.destroy = destroy_buffer;
 126         buffer->buffer.resource.client = resource->client;
 127
 128         wl_client_add_resource(resource->client, &buffer->buffer.resource);
 129 }
 130
 131 static void
 132 drm_authenticate(struct wl_client *client,
 133                  struct wl_resource *resource, uint32_t id)
 134 {
 135         struct wl_drm *drm = resource->data;
 136
 137         if (drm->callbacks->authenticate(drm->user_data, id) < 0)
 138                 wl_resource_post_error(resource,
 139                                        WL_DRM_ERROR_AUTHENTICATE_FAIL,
 140                                        "authenicate failed");
 141         else
 142                 wl_resource_post_event(resource, 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 bind_drm(struct wl_client *client, void *data, uint32_t version, uint32_t id)
 152 {
 153         struct wl_drm *drm = data;
 154         struct wl_resource *resource;
 155
 156         resource = wl_client_add_object(client, &wl_drm_interface,
 157                                         &drm_interface, id, data);
 158         wl_resource_post_event(resource, WL_DRM_DEVICE, drm->device_name);
 159         wl_resource_post_event(resource, WL_DRM_FORMAT,
 160                                WL_DRM_FORMAT_ARGB8888);
 161         wl_resource_post_event(resource, WL_DRM_FORMAT,
 162                                WL_DRM_FORMAT_XRGB8888);
 163 }
 164
 165 struct wl_drm *
 166 wayland_drm_init(struct wl_display *display, char *device_name,
 167                  struct wayland_drm_callbacks *callbacks, void *user_data)
 168 {
 169         struct wl_drm *drm;
 170
 171         drm = malloc(sizeof *drm);
 172
 173         drm->display = display;
 174         drm->device_name = strdup(device_name);
 175         drm->callbacks = callbacks;
 176         drm->user_data = user_data;
 177
 178         wl_display_add_global(display, &wl_drm_interface, drm, bind_drm);
 179
 180         return drm;
 181 }
 182
 183 void
 184 wayland_drm_uninit(struct wl_drm *drm)
 185 {
 186         free(drm->device_name);
 187
 188         /* FIXME: need wl_display_del_{object,global} */
 189
 190         free(drm);
 191 }
 192
 193 int
 194 wayland_buffer_is_drm(struct wl_buffer *buffer)
 195 {
 196         return buffer->resource.object.implementation ==
 197                 (void (**)(void)) &drm_buffer_interface;
 198 }
 199
 200 uint32_t
 201 wayland_drm_buffer_get_format(struct wl_buffer *buffer_base)
 202 {
 203         struct wl_drm_buffer *buffer = (struct wl_drm_buffer *) buffer_base;
 204
 205         return buffer->format;
 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 }