src/tdm_server.c

   1 /**************************************************************************
   2  *
   3  * libtdm
   4  *
   5  * Copyright 2015 Samsung Electronics co., Ltd. All Rights Reserved.
   6  *
   7  * Contact: Eunchul Kim <chulspro.kim@samsung.com>,
   8  *          JinYoung Jeon <jy0.jeon@samsung.com>,
   9  *          Taeheon Kim <th908.kim@samsung.com>,
  10  *          YoungJun Cho <yj44.cho@samsung.com>,
  11  *          SooChan Lim <sc1.lim@samsung.com>,
  12  *          Boram Park <sc1.lim@samsung.com>
  13  *
  14  * Permission is hereby granted, free of charge, to any person obtaining a
  15  * copy of this software and associated documentation files (the
  16  * "Software"), to deal in the Software without restriction, including
  17  * without limitation the rights to use, copy, modify, merge, publish,
  18  * distribute, sub license, and/or sell copies of the Software, and to
  19  * permit persons to whom the Software is furnished to do so, subject to
  20  * the following conditions:
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  27  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  29  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  30  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  31  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  32  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33  *
  34 **************************************************************************/
  35
  36 #ifdef HAVE_CONFIG_H
  37 #include "config.h"
  38 #endif
  39
  40 #include "tdm.h"
  41 #include "tdm_private.h"
  42 #include "tdm_list.h"
  43 #include "tdm-server-protocol.h"
  44
  45 /* CAUTION:
  46  * - tdm server doesn't care about thread things.
  47  * - DO NOT use the TDM internal functions here.
  48  *     However, the internal function which does lock/unlock the mutex of
  49  *     private_display in itself can be called.
  50  * - DO NOT use the tdm_private_display structure here.
  51  * - The callback function things can be called in main thread.
  52  */
  53
  54 struct _tdm_private_server {
  55         tdm_private_loop *private_loop;
  56         struct list_head output_list;
  57         struct list_head wait_list;
  58 };
  59
  60 typedef struct _tdm_server_output_info {
  61         struct list_head link;
  62         tdm_private_server *private_server;
  63         struct wl_resource *resource;
  64         tdm_output *output;
  65         struct list_head vblank_list;
  66 } tdm_server_output_info;
  67
  68 typedef struct _tdm_server_vblank_info {
  69         struct list_head link;
  70         tdm_server_output_info *output_info;
  71         struct wl_resource *resource;
  72
  73         tdm_vblank *vblank;
  74 } tdm_server_vblank_info;
  75
  76 typedef struct _tdm_server_wait_info {
  77         struct list_head link;
  78         tdm_server_vblank_info *vblank_info;
  79
  80         unsigned int req_id;
  81 } tdm_server_wait_info;
  82
  83 static tdm_private_server *keep_private_server;
  84
  85 static void destroy_wait(tdm_server_wait_info *wait_info);
  86
  87 static tdm_output*
  88 _tdm_server_find_output(tdm_private_server *private_server, const char *name)
  89 {
  90         tdm_private_loop *private_loop = private_server->private_loop;
  91         tdm_output *found = NULL;
  92
  93         if (!strncasecmp(name, "primary", 7) || !strncasecmp(name, "default", 7))
  94                 found = tdm_display_get_output(private_loop->dpy, 0, NULL);
  95
  96         if (!found) {
  97                 int count = 0, i;
  98
  99                 tdm_display_get_output_count(private_loop->dpy, &count);
 100
 101                 for (i = 0; i < count; i++) {
 102                         tdm_output *output = tdm_display_get_output(private_loop->dpy, i, NULL);
 103                         tdm_output_conn_status status;
 104                         const char *model = NULL;
 105                         tdm_error ret;
 106
 107                         ret = tdm_output_get_conn_status(output, &status);
 108                         if (ret || status == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
 109                                 continue;
 110
 111                         ret = tdm_output_get_model_info(output, NULL, &model, NULL);
 112                         if (ret || !model)
 113                                 continue;
 114
 115                         if (strncmp(model, name, TDM_NAME_LEN))
 116                                 continue;
 117
 118                         found = output;
 119                         break;
 120                 }
 121         }
 122
 123         return found;
 124 }
 125
 126 static void
 127 _tdm_server_send_done(tdm_server_wait_info *wait_info, tdm_error error,
 128                                           unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec)
 129 {
 130         tdm_server_wait_info *found;
 131         tdm_server_vblank_info *vblank_info;
 132
 133         if (!keep_private_server)
 134                 return;
 135
 136         LIST_FIND_ITEM(wait_info, &keep_private_server->wait_list,
 137                                    tdm_server_wait_info, link, found);
 138         if (!found) {
 139                 TDM_DBG("wait_info(%p) is destroyed", wait_info);
 140                 return;
 141         }
 142
 143         TDM_DBG("req_id(%d) done", wait_info->req_id);
 144
 145         vblank_info = wait_info->vblank_info;
 146         wl_tdm_vblank_send_done(vblank_info->resource, wait_info->req_id,
 147                                                         sequence, tv_sec, tv_usec, error);
 148         destroy_wait(wait_info);
 149 }
 150
 151 static void
 152 _tdm_server_cb_vblank(tdm_vblank *vblank, tdm_error error, unsigned int sequence,
 153                                           unsigned int tv_sec, unsigned int tv_usec, void *user_data)
 154 {
 155         _tdm_server_send_done((tdm_server_wait_info*)user_data, error, sequence, tv_sec, tv_usec);
 156 }
 157
 158 static void
 159 _tdm_server_cb_output_change(tdm_output *output, tdm_output_change_type type,
 160                                                          tdm_value value, void *user_data)
 161 {
 162         tdm_server_output_info *output_info = user_data;
 163
 164         TDM_RETURN_IF_FAIL(output_info != NULL);
 165
 166         switch (type) {
 167         case TDM_OUTPUT_CHANGE_DPMS:
 168                 wl_tdm_output_send_dpms(output_info->resource, value.u32);
 169                 break;
 170         case TDM_OUTPUT_CHANGE_CONNECTION:
 171                 wl_tdm_output_send_connection(output_info->resource, value.u32);
 172                 break;
 173         default:
 174                 break;
 175         }
 176 }
 177
 178 static void
 179 destroy_wait(tdm_server_wait_info *wait_info)
 180 {
 181         LIST_DEL(&wait_info->link);
 182         free(wait_info);
 183 }
 184
 185 static void
 186 destroy_vblank_callback(struct wl_resource *resource)
 187 {
 188         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 189         tdm_server_wait_info *w = NULL, *ww = NULL;
 190
 191         TDM_RETURN_IF_FAIL(vblank_info != NULL);
 192
 193         if (vblank_info->vblank)
 194                 tdm_vblank_destroy(vblank_info->vblank);
 195
 196         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &keep_private_server->wait_list, link) {
 197                 if (w->vblank_info == vblank_info) {
 198                         destroy_wait(w);
 199                 }
 200         }
 201
 202         LIST_DEL(&vblank_info->link);
 203         free(vblank_info);
 204 }
 205
 206 static void
 207 _tdm_server_vblank_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 208 {
 209         wl_resource_destroy(resource);
 210 }
 211
 212 static void
 213 _tdm_server_vblank_cb_set_fps(struct wl_client *client, struct wl_resource *resource, uint32_t fps)
 214 {
 215         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 216
 217         tdm_vblank_set_fps(vblank_info->vblank, fps);
 218 }
 219
 220 static void
 221 _tdm_server_vblank_cb_set_offset(struct wl_client *client, struct wl_resource *resource, int32_t offset)
 222 {
 223         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 224
 225         tdm_vblank_set_offset(vblank_info->vblank, offset);
 226 }
 227
 228 static void
 229 _tdm_server_vblank_cb_set_enable_fake(struct wl_client *client, struct wl_resource *resource, uint32_t enable_fake)
 230 {
 231         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 232
 233         tdm_vblank_set_enable_fake(vblank_info->vblank, enable_fake);
 234 }
 235
 236 static void
 237 _tdm_server_vblank_cb_wait_vblank(struct wl_client *client, struct wl_resource *resource,
 238                                                                   uint32_t interval, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 239 {
 240         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 241         tdm_server_output_info *output_info = vblank_info->output_info;
 242         tdm_private_server *private_server = output_info->private_server;
 243         tdm_server_wait_info *wait_info;
 244         tdm_error ret;
 245
 246         wait_info = calloc(1, sizeof *wait_info);
 247         if (!wait_info) {
 248                 TDM_ERR("alloc failed");
 249                 ret = TDM_ERROR_OUT_OF_MEMORY;
 250                 goto wait_failed;
 251         }
 252
 253         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 254         wait_info->vblank_info = vblank_info;
 255         wait_info->req_id = req_id;
 256
 257         TDM_DBG("req_id(%d) wait", req_id);
 258
 259         ret = tdm_vblank_wait(vblank_info->vblank, req_sec, req_usec, interval, _tdm_server_cb_vblank, wait_info);
 260         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 261
 262         return;
 263 wait_failed:
 264         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 265 }
 266
 267 static const struct wl_tdm_vblank_interface tdm_vblank_implementation = {
 268         _tdm_server_vblank_cb_destroy,
 269         _tdm_server_vblank_cb_set_fps,
 270         _tdm_server_vblank_cb_set_offset,
 271         _tdm_server_vblank_cb_set_enable_fake,
 272         _tdm_server_vblank_cb_wait_vblank,
 273 };
 274
 275 static void
 276 _tdm_server_output_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 277 {
 278         wl_resource_destroy(resource);
 279 }
 280
 281 static void
 282 _tdm_server_output_cb_create_vblank(struct wl_client *client, struct wl_resource *resource, uint32_t id)
 283 {
 284         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 285         tdm_private_server *private_server = output_info->private_server;
 286         tdm_private_loop *private_loop = private_server->private_loop;
 287         struct wl_resource *vblank_resource;
 288         tdm_vblank *vblank;
 289         tdm_server_vblank_info *vblank_info;
 290
 291         vblank_resource =
 292                 wl_resource_create(client, &wl_tdm_vblank_interface,
 293                                                    wl_resource_get_version(resource), id);
 294         if (!vblank_resource) {
 295                 wl_resource_post_no_memory(resource);
 296                 TDM_ERR("wl_resource_create failed");
 297                 return;
 298         }
 299
 300         vblank = tdm_vblank_create(private_loop->dpy, output_info->output, NULL);
 301         if (!vblank) {
 302                 wl_resource_post_no_memory(resource);
 303                 wl_resource_destroy(vblank_resource);
 304                 TDM_ERR("tdm_vblank_create failed");
 305                 return;
 306         }
 307
 308         vblank_info = calloc(1, sizeof *vblank_info);
 309         if (!vblank_info) {
 310                 wl_resource_post_no_memory(resource);
 311                 wl_resource_destroy(vblank_resource);
 312                 tdm_vblank_destroy(vblank);
 313                 TDM_ERR("alloc failed");
 314                 return;
 315         }
 316
 317         LIST_ADDTAIL(&vblank_info->link, &output_info->vblank_list);
 318         vblank_info->output_info = output_info;
 319         vblank_info->resource = vblank_resource;
 320         vblank_info->vblank = vblank;
 321
 322         wl_resource_set_implementation(vblank_resource, &tdm_vblank_implementation,
 323                                                                    vblank_info, destroy_vblank_callback);
 324
 325         return;
 326 }
 327
 328 static const struct wl_tdm_output_interface tdm_output_implementation = {
 329         _tdm_server_output_cb_destroy,
 330         _tdm_server_output_cb_create_vblank,
 331 };
 332
 333 static void
 334 destroy_output_callback(struct wl_resource *resource)
 335 {
 336         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 337         tdm_server_vblank_info *v = NULL, *vv = NULL;
 338
 339         TDM_RETURN_IF_FAIL(output_info != NULL);
 340
 341         tdm_output_remove_change_handler(output_info->output,
 342                                                                          _tdm_server_cb_output_change, output_info);
 343
 344         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &output_info->vblank_list, link) {
 345                 wl_resource_destroy(v->resource);
 346         }
 347
 348         LIST_DEL(&output_info->link);
 349         free(output_info);
 350 }
 351
 352 static void
 353 _tdm_server_cb_create_output(struct wl_client *client, struct wl_resource *resource,
 354                                                          const char *name, uint32_t id)
 355 {
 356         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 357         tdm_server_output_info *output_info;
 358         struct wl_resource *output_resource = NULL;
 359         tdm_output *output;
 360         const tdm_output_mode *mode = NULL;
 361         tdm_output_dpms dpms_value;
 362         tdm_output_conn_status status;
 363
 364         output = _tdm_server_find_output(private_server, name);
 365         if (!output) {
 366                 TDM_ERR("There is no '%s' output", name);
 367                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 368                                "There is no '%s' output", name);
 369                 return;
 370         }
 371
 372         tdm_output_get_mode(output, &mode);
 373         if (!mode) {
 374                 TDM_ERR("no mode for '%s' output", name);
 375                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 376                                "no mode for '%s' output", name);
 377                 return;
 378         }
 379
 380         tdm_output_get_dpms(output, &dpms_value);
 381         tdm_output_get_conn_status(output, &status);
 382
 383         output_resource =
 384                 wl_resource_create(client, &wl_tdm_output_interface,
 385                                                    wl_resource_get_version(resource), id);
 386         if (!output_resource) {
 387                 wl_resource_post_no_memory(resource);
 388                 TDM_ERR("wl_resource_create failed");
 389                 return;
 390         }
 391
 392         output_info = calloc(1, sizeof * output_info);
 393         if (!output_info) {
 394                 wl_resource_post_no_memory(resource);
 395                 wl_resource_destroy(output_resource);
 396                 TDM_ERR("alloc failed");
 397                 return;
 398         }
 399
 400         LIST_ADDTAIL(&output_info->link, &private_server->output_list);
 401         output_info->private_server = private_server;
 402         output_info->resource = output_resource;
 403         output_info->output = output;
 404         LIST_INITHEAD(&output_info->vblank_list);
 405
 406         tdm_output_add_change_handler(output, _tdm_server_cb_output_change, output_info);
 407
 408         wl_resource_set_implementation(output_resource, &tdm_output_implementation,
 409                                                                    output_info, destroy_output_callback);
 410
 411         wl_tdm_output_send_mode(output_resource, mode->hdisplay, mode->vdisplay, mode->vrefresh);
 412         wl_tdm_output_send_dpms(output_resource, dpms_value);
 413         wl_tdm_output_send_connection(output_resource, status);
 414 }
 415
 416 static const struct wl_tdm_interface tdm_implementation = {
 417         _tdm_server_cb_create_output,
 418 };
 419
 420 static void
 421 _tdm_server_bind(struct wl_client *client, void *data,
 422                                  uint32_t version, uint32_t id)
 423 {
 424         struct wl_resource *resource;
 425
 426         resource = wl_resource_create(client, &wl_tdm_interface, version, id);
 427         if (!resource) {
 428                 wl_client_post_no_memory(client);
 429                 return;
 430         }
 431
 432         TDM_DBG("tdm server binding");
 433
 434         wl_resource_set_implementation(resource, &tdm_implementation, data, NULL);
 435 }
 436
 437 INTERN tdm_error
 438 tdm_server_init(tdm_private_loop *private_loop)
 439 {
 440         tdm_private_server *private_server;
 441
 442         if (private_loop->private_server)
 443                 return TDM_ERROR_NONE;
 444
 445         TDM_RETURN_VAL_IF_FAIL(private_loop, TDM_ERROR_OPERATION_FAILED);
 446         TDM_RETURN_VAL_IF_FAIL(private_loop->wl_display, TDM_ERROR_OPERATION_FAILED);
 447
 448         if (wl_display_add_socket(private_loop->wl_display, "tdm-socket")) {
 449                 TDM_ERR("createing a tdm-socket failed");
 450                 return TDM_ERROR_OPERATION_FAILED;
 451         }
 452
 453         private_server = calloc(1, sizeof * private_server);
 454         if (!private_server) {
 455                 TDM_ERR("alloc failed");
 456                 return TDM_ERROR_OUT_OF_MEMORY;
 457         }
 458
 459         LIST_INITHEAD(&private_server->output_list);
 460         LIST_INITHEAD(&private_server->wait_list);
 461
 462         if (!wl_global_create(private_loop->wl_display, &wl_tdm_interface, 1,
 463                                                   private_server, _tdm_server_bind)) {
 464                 TDM_ERR("creating a global resource failed");
 465                 free(private_server);
 466                 return TDM_ERROR_OUT_OF_MEMORY;
 467         }
 468
 469         private_server->private_loop = private_loop;
 470         private_loop->private_server = private_server;
 471         keep_private_server = private_server;
 472
 473         return TDM_ERROR_NONE;
 474 }
 475
 476 INTERN void
 477 tdm_server_deinit(tdm_private_loop *private_loop)
 478 {
 479         tdm_server_output_info *o = NULL, *oo = NULL;
 480         tdm_server_wait_info *w = NULL, *ww = NULL;
 481         tdm_private_server *private_server;
 482
 483         if (!private_loop->private_server)
 484                 return;
 485
 486         private_server = private_loop->private_server;
 487
 488         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_server->wait_list, link) {
 489                 destroy_wait(w);
 490         }
 491
 492         LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_server->output_list, link) {
 493                 wl_resource_destroy(o->resource);
 494         }
 495
 496         free(private_server);
 497         private_loop->private_server = NULL;
 498         keep_private_server = NULL;
 499 }