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 #include <unistd.h>
  35
  36 #include <wayland-server.h>
  37 #include "wayland-drm.h"
  38 #include "wayland-drm-server-protocol.h"
  39
  40 #define MIN(x,y) (((x)<(y))?(x):(y))
  41
  42 struct wl_drm {
  43         struct wl_display *display;
  44
  45         void *user_data;
  46         char *device_name;
  47         uint32_t flags;
  48
  49         struct wayland_drm_callbacks *callbacks;
  50
  51         struct wl_buffer_interface buffer_interface;
  52 };
  53
  54 static void
  55 destroy_buffer(struct wl_resource *resource)
  56 {
  57         struct wl_drm_buffer *buffer = resource->data;
  58         struct wl_drm *drm = buffer->drm;
  59
  60         drm->callbacks->release_buffer(drm->user_data, buffer);
  61         free(buffer);
  62 }
  63
  64 static void
  65 buffer_destroy(struct wl_client *client, struct wl_resource *resource)
  66 {
  67         wl_resource_destroy(resource);
  68 }
  69
  70 static void
  71 create_buffer(struct wl_client *client, struct wl_resource *resource,
  72               uint32_t id, uint32_t name, int fd,
  73               int32_t width, int32_t height,
  74               uint32_t format,
  75               int32_t offset0, int32_t stride0,
  76               int32_t offset1, int32_t stride1,
  77               int32_t offset2, int32_t stride2)
  78 {
  79         struct wl_drm *drm = resource->data;
  80         struct wl_drm_buffer *buffer;
  81
  82         buffer = calloc(1, sizeof *buffer);
  83         if (buffer == NULL) {
  84                 wl_resource_post_no_memory(resource);
  85                 return;
  86         }
  87
  88         buffer->drm = drm;
  89         buffer->width = width;
  90         buffer->height = height;
  91         buffer->format = format;
  92         buffer->offset[0] = offset0;
  93         buffer->stride[0] = stride0;
  94         buffer->offset[1] = offset1;
  95         buffer->stride[1] = stride1;
  96         buffer->offset[2] = offset2;
  97         buffer->stride[2] = stride2;
  98
  99         drm->callbacks->reference_buffer(drm->user_data, name, fd, buffer);
 100         if (buffer->driver_buffer == NULL) {
 101                 wl_resource_post_error(resource,
 102                                        WL_DRM_ERROR_INVALID_NAME,
 103                                        "invalid name");
 104                 return;
 105         }
 106
 107         buffer->resource =
 108                 wl_resource_create(client, &wl_buffer_interface, 1, id);
 109         if (!buffer->resource) {
 110                 wl_resource_post_no_memory(resource);
 111                 free(buffer);
 112                 return;
 113         }
 114
 115         wl_resource_set_implementation(buffer->resource,
 116                                        (void (**)(void)) &drm->buffer_interface,
 117                                        buffer, destroy_buffer);
 118 }
 119
 120 static void
 121 drm_create_buffer(struct wl_client *client, struct wl_resource *resource,
 122                   uint32_t id, uint32_t name, int32_t width, int32_t height,
 123                   uint32_t stride, uint32_t format)
 124 {
 125         switch (format) {
 126         case WL_DRM_FORMAT_ARGB8888:
 127         case WL_DRM_FORMAT_XRGB8888:
 128         case WL_DRM_FORMAT_YUYV:
 129                 break;
 130         default:
 131                 wl_resource_post_error(resource,
 132                                        WL_DRM_ERROR_INVALID_FORMAT,
 133                                        "invalid format");
 134            return;
 135         }
 136
 137         create_buffer(client, resource, id,
 138                       name, -1, width, height, format, 0, stride, 0, 0, 0, 0);
 139 }
 140
 141 static void
 142 drm_create_planar_buffer(struct wl_client *client,
 143                          struct wl_resource *resource,
 144                          uint32_t id, uint32_t name,
 145                          int32_t width, int32_t height, uint32_t format,
 146                          int32_t offset0, int32_t stride0,
 147                          int32_t offset1, int32_t stride1,
 148                          int32_t offset2, int32_t stride2)
 149 {
 150         switch (format) {
 151         case WL_DRM_FORMAT_YUV410:
 152         case WL_DRM_FORMAT_YUV411:
 153         case WL_DRM_FORMAT_YUV420:
 154         case WL_DRM_FORMAT_YUV422:
 155         case WL_DRM_FORMAT_YUV444:
 156         case WL_DRM_FORMAT_NV12:
 157         case WL_DRM_FORMAT_NV16:
 158                 break;
 159         default:
 160                 wl_resource_post_error(resource,
 161                                        WL_DRM_ERROR_INVALID_FORMAT,
 162                                        "invalid format");
 163            return;
 164         }
 165
 166         create_buffer(client, resource, id, name, -1, width, height, format,
 167                       offset0, stride0, offset1, stride1, offset2, stride2);
 168 }
 169
 170 static void
 171 drm_create_prime_buffer(struct wl_client *client,
 172                         struct wl_resource *resource,
 173                         uint32_t id, int fd,
 174                         int32_t width, int32_t height, uint32_t format,
 175                         int32_t offset0, int32_t stride0,
 176                         int32_t offset1, int32_t stride1,
 177                         int32_t offset2, int32_t stride2)
 178 {
 179         create_buffer(client, resource, id, 0, fd, width, height, format,
 180                       offset0, stride0, offset1, stride1, offset2, stride2);
 181         close(fd);
 182 }
 183
 184 static void
 185 drm_authenticate(struct wl_client *client,
 186                  struct wl_resource *resource, uint32_t id)
 187 {
 188         struct wl_drm *drm = resource->data;
 189
 190         if (drm->callbacks->authenticate(drm->user_data, id) < 0)
 191                 wl_resource_post_error(resource,
 192                                        WL_DRM_ERROR_AUTHENTICATE_FAIL,
 193                                        "authenicate failed");
 194         else
 195                 wl_resource_post_event(resource, WL_DRM_AUTHENTICATED);
 196 }
 197
 198 const static struct wl_drm_interface drm_interface = {
 199         drm_authenticate,
 200         drm_create_buffer,
 201         drm_create_planar_buffer,
 202         drm_create_prime_buffer
 203 };
 204
 205 static void
 206 bind_drm(struct wl_client *client, void *data, uint32_t version, uint32_t id)
 207 {
 208         struct wl_drm *drm = data;
 209         struct wl_resource *resource;
 210         uint32_t capabilities;
 211
 212         resource = wl_resource_create(client, &wl_drm_interface,
 213                                       MIN(version, 2), id);
 214         if (!resource) {
 215                 wl_client_post_no_memory(client);
 216                 return;
 217         }
 218
 219         wl_resource_set_implementation(resource, &drm_interface, data, NULL);
 220
 221         wl_resource_post_event(resource, WL_DRM_DEVICE, drm->device_name);
 222         wl_resource_post_event(resource, WL_DRM_FORMAT,
 223                                WL_DRM_FORMAT_ARGB8888);
 224         wl_resource_post_event(resource, WL_DRM_FORMAT,
 225                                WL_DRM_FORMAT_XRGB8888);
 226         wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV410);
 227         wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV411);
 228         wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV420);
 229         wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV422);
 230         wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV444);
 231         wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_NV12);
 232         wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_NV16);
 233         wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUYV);
 234
 235         capabilities = 0;
 236         if (drm->flags & WAYLAND_DRM_PRIME)
 237            capabilities |= WL_DRM_CAPABILITY_PRIME;
 238
 239         if (version >= 2)
 240            wl_resource_post_event(resource, WL_DRM_CAPABILITIES, capabilities);
 241 }
 242
 243 struct wl_drm_buffer *
 244 wayland_drm_buffer_get(struct wl_drm *drm, struct wl_resource *resource)
 245 {
 246         struct wl_drm_buffer *buffer;
 247
 248         if (resource == NULL)
 249                 return NULL;
 250
 251         if (wl_resource_instance_of(resource, &wl_buffer_interface,
 252                                     &drm->buffer_interface))
 253                 return wl_resource_get_user_data(resource);
 254         else
 255                 return NULL;
 256 }
 257
 258 struct wl_drm *
 259 wayland_drm_init(struct wl_display *display, char *device_name,
 260                  struct wayland_drm_callbacks *callbacks, void *user_data,
 261                  uint32_t flags)
 262 {
 263         struct wl_drm *drm;
 264
 265         drm = malloc(sizeof *drm);
 266
 267         drm->display = display;
 268         drm->device_name = strdup(device_name);
 269         drm->callbacks = callbacks;
 270         drm->user_data = user_data;
 271         drm->flags = flags;
 272
 273         drm->buffer_interface.destroy = buffer_destroy;
 274
 275         wl_global_create(display, &wl_drm_interface, 2, drm, bind_drm);
 276
 277         return drm;
 278 }
 279
 280 void
 281 wayland_drm_uninit(struct wl_drm *drm)
 282 {
 283         free(drm->device_name);
 284
 285         /* FIXME: need wl_display_del_{object,global} */
 286
 287         free(drm);
 288 }
 289
 290 uint32_t
 291 wayland_drm_buffer_get_format(struct wl_drm_buffer *buffer)
 292 {
 293         return buffer->format;
 294 }
 295
 296 void *
 297 wayland_drm_buffer_get_buffer(struct wl_drm_buffer *buffer)
 298 {
 299         return buffer->driver_buffer;
 300 }