src/tbm_drm_helper_client.c

   1 /**************************************************************************
   2
   3 libtbm
   4
   5 Copyright 2012 Samsung Electronics co., Ltd. All Rights Reserved.
   6
   7 Contact: SooChan Lim <sc1.lim@samsung.com>, Sangjin Lee <lsj119@samsung.com>
   8 Boram Park <boram1288.park@samsung.com>, Changyeon Lee <cyeon.lee@samsung.com>
   9
  10 Permission is hereby granted, free of charge, to any person obtaining a
  11 copy of this software and associated documentation files (the
  12 "Software"), to deal in the Software without restriction, including
  13 without limitation the rights to use, copy, modify, merge, publish,
  14 distribute, sub license, and/or sell copies of the Software, and to
  15 permit persons to whom the Software is furnished to do so, subject to
  16 the following conditions:
  17
  18 The above copyright notice and this permission notice (including the
  19 next paragraph) shall be included in all copies or substantial portions
  20 of the Software.
  21
  22 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  23 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  25 IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  26 ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  27 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  28 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29
  30 **************************************************************************/
  31
  32 #define WL_HIDE_DEPRECATED
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <stddef.h>
  38 #include <unistd.h>
  39 #include <fcntl.h>
  40
  41 #include "tbm_bufmgr_int.h"
  42
  43 #include "wayland-tbm-drm-client-protocol.h"
  44
  45 struct wayland_tbm_drm_client {
  46         struct wl_display *display;
  47         struct wl_tbm_drm *wl_tbm_drm;
  48         int auth_fd;
  49         char *device;
  50         uint32_t capabilities;
  51 };
  52
  53 static void
  54 handle_tbm_drm_authentication_info(void *data, struct wl_tbm_drm *wl_tbm_drm, const char *device_name, uint32_t capabilities, int32_t auth_fd)
  55 {
  56         struct wayland_tbm_drm_client *tbm_drm_client = (struct wayland_tbm_drm_client *)data;
  57
  58         /* client authentication infomation */
  59         tbm_drm_client->auth_fd = auth_fd;
  60         tbm_drm_client->capabilities = capabilities;
  61         if (device_name)
  62             tbm_drm_client->device = strndup(device_name, 256);
  63 }
  64
  65 static const struct wl_tbm_drm_listener wl_tbm_drm_client_listener = {
  66     handle_tbm_drm_authentication_info
  67 };
  68
  69 static void
  70 _wayland_tbm_drm_client_registry_handle_global(void *data, struct wl_registry *registry, uint32_t name, const char *interface, uint32_t version)
  71 {
  72         struct wayland_tbm_drm_client *tbm_drm_client = (struct wayland_tbm_drm_client *)data;
  73
  74         if (!strcmp(interface, "wl_tbm_drm")) {
  75                 tbm_drm_client->wl_tbm_drm = wl_registry_bind(registry, name, &wl_tbm_drm_interface, version);
  76                 TBM_RETURN_IF_FAIL(tbm_drm_client->wl_tbm_drm != NULL);
  77
  78                 wl_tbm_drm_add_listener(tbm_drm_client->wl_tbm_drm, &wl_tbm_drm_client_listener, tbm_drm_client);
  79
  80                 wl_tbm_drm_get_authentication_info(tbm_drm_client->wl_tbm_drm);
  81                 wl_display_roundtrip(tbm_drm_client->display);
  82         }
  83 }
  84
  85 static const struct wl_registry_listener registry_listener = {
  86     _wayland_tbm_drm_client_registry_handle_global,
  87     NULL
  88 };
  89
  90 int
  91 wayland_tbm_drm_client_get_auth_info(int *auth_fd, char **device, uint32_t *capabilities)
  92 {
  93         struct wl_display *display;
  94         struct wl_registry *wl_registry;
  95         struct wayland_tbm_drm_client *tbm_drm_client;
  96
  97         tbm_drm_client = calloc(1, sizeof(struct wayland_tbm_drm_client));
  98         TBM_RETURN_VAL_IF_FAIL(tbm_drm_client != NULL, 0);
  99
 100         tbm_drm_client->auth_fd = -1;
 101
 102         display = wl_display_connect("tbm_drm");
 103         if (!display) {
 104                 TBM_LOG("Failed to connect display\n");
 105                 free(tbm_drm_client);
 106
 107                 return 0;
 108         }
 109
 110         tbm_drm_client->display = display;
 111
 112         wl_registry = wl_display_get_registry(display);
 113         if (!wl_registry) {
 114                 TBM_LOG("Failed to connect display\n");
 115                 wl_display_disconnect(display);
 116                 free(tbm_drm_client);
 117
 118                 return 0;
 119         }
 120
 121         wl_registry_add_listener(wl_registry, &registry_listener, &tbm_drm_client);
 122         wl_display_roundtrip(display); //For Gloabl registry
 123
 124         if (!tbm_drm_client->wl_tbm_drm) {
 125                 TBM_LOG("Failed to get wl_tbm_drm interface\n");
 126                 wl_registry_destroy(wl_registry);
 127                 wl_display_disconnect(display);
 128                 free(tbm_drm_client);
 129
 130                 return 0;
 131         }
 132
 133         if (tbm_drm_client->auth_fd < 0) {
 134                 TBM_LOG("Failed to get auth info\n");
 135                 wl_tbm_drm_set_user_data(tbm_drm_client->wl_tbm_drm, NULL);
 136                 wl_tbm_drm_destroy(tbm_drm_client->wl_tbm_drm);
 137                 wl_registry_destroy(wl_registry);
 138                 wl_display_disconnect(display);
 139                 free(tbm_drm_client);
 140
 141                 return 0;
 142         }
 143
 144         if (auth_fd)
 145                 *auth_fd = tbm_drm_client->auth_fd;
 146         else
 147                 close(*auth_fd);
 148
 149         if (capabilities)
 150                 *capabilities = tbm_drm_client->capabilities;
 151
 152         if (tbm_drm_client->device && device)
 153                 *device = strdup(tbm_drm_client->device);
 154         else
 155                 *device = NULL;
 156
 157         wl_tbm_drm_set_user_data(tbm_drm_client->wl_tbm_drm, NULL);
 158         wl_tbm_drm_destroy(tbm_drm_client->wl_tbm_drm);
 159
 160         if (tbm_drm_client->device)
 161                 free(tbm_drm_client->device);
 162
 163         free(tbm_drm_client);
 164
 165         wl_registry_destroy(wl_registry);
 166         wl_display_disconnect(display);
 167
 168         return 1;
 169 }