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  */
  52
  53 struct _tdm_private_server {
  54         tdm_private_loop *private_loop;
  55         struct list_head output_list;
  56         struct list_head wait_list;
  57 };
  58
  59 typedef struct _tdm_server_output_info {
  60         struct list_head link;
  61         tdm_private_server *private_server;
  62         struct wl_resource *resource;
  63         tdm_output *output;
  64         struct list_head vblank_list;
  65 } tdm_server_output_info;
  66
  67 typedef struct _tdm_server_vblank_info {
  68         struct list_head link;
  69         tdm_server_output_info *output_info;
  70         struct wl_resource *resource;
  71
  72         tdm_vblank *vblank;
  73 } tdm_server_vblank_info;
  74
  75 typedef struct _tdm_server_wait_info {
  76         struct list_head link;
  77         tdm_server_vblank_info *vblank_info;
  78
  79         unsigned int req_id;
  80 } tdm_server_wait_info;
  81
  82 static tdm_private_server *keep_private_server;
  83
  84 static void destroy_wait(tdm_server_wait_info *wait_info);
  85
  86 static tdm_output*
  87 _tdm_server_find_output(tdm_private_server *private_server, const char *name)
  88 {
  89         tdm_private_loop *private_loop = private_server->private_loop;
  90         tdm_output *found = NULL;
  91
  92         if (!strncasecmp(name, "primary", 7) || !strncasecmp(name, "default", 7))
  93                 found = tdm_display_get_output(private_loop->dpy, 0, NULL);
  94
  95         if (!found) {
  96                 int count = 0, i;
  97
  98                 tdm_display_get_output_count(private_loop->dpy, &count);
  99
 100                 for (i = 0; i < count; i++) {
 101                         tdm_output *output = tdm_display_get_output(private_loop->dpy, i, NULL);
 102                         tdm_output_conn_status status;
 103                         const char *model = NULL;
 104                         tdm_error ret;
 105
 106                         ret = tdm_output_get_conn_status(output, &status);
 107                         if (ret || status == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
 108                                 continue;
 109
 110                         ret = tdm_output_get_model_info(output, NULL, &model, NULL);
 111                         if (ret || !model)
 112                                 continue;
 113
 114                         if (strncmp(model, name, TDM_NAME_LEN))
 115                                 continue;
 116
 117                         found = output;
 118                         break;
 119                 }
 120         }
 121
 122         return found;
 123 }
 124
 125 static void
 126 _tdm_server_send_done(tdm_server_wait_info *wait_info, tdm_error error,
 127                                           unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec)
 128 {
 129         tdm_server_wait_info *found;
 130         tdm_server_vblank_info *vblank_info;
 131
 132         if (!keep_private_server)
 133                 return;
 134
 135         LIST_FIND_ITEM(wait_info, &keep_private_server->wait_list,
 136                                    tdm_server_wait_info, link, found);
 137         if (!found) {
 138                 TDM_DBG("wait_info(%p) is destroyed", wait_info);
 139                 return;
 140         }
 141
 142         TDM_DBG("req_id(%d) done", wait_info->req_id);
 143
 144         vblank_info = wait_info->vblank_info;
 145         wl_tdm_vblank_send_done(vblank_info->resource, wait_info->req_id,
 146                                                         sequence, tv_sec, tv_usec, error);
 147         destroy_wait(wait_info);
 148 }
 149
 150 static void
 151 _tdm_server_cb_vblank(tdm_vblank *vblank, tdm_error error, unsigned int sequence,
 152                                           unsigned int tv_sec, unsigned int tv_usec, void *user_data)
 153 {
 154         _tdm_server_send_done((tdm_server_wait_info*)user_data, error, sequence, tv_sec, tv_usec);
 155 }
 156
 157 static void
 158 _tdm_server_cb_output_change(tdm_output *output, tdm_output_change_type type,
 159                                                          tdm_value value, void *user_data)
 160 {
 161         tdm_server_output_info *output_info = user_data;
 162
 163         TDM_RETURN_IF_FAIL(output_info != NULL);
 164
 165         switch (type) {
 166         case TDM_OUTPUT_CHANGE_DPMS:
 167                 wl_tdm_output_send_dpms(output_info->resource, value.u32);
 168                 break;
 169         case TDM_OUTPUT_CHANGE_CONNECTION:
 170                 wl_tdm_output_send_connection(output_info->resource, value.u32);
 171                 break;
 172         default:
 173                 break;
 174         }
 175 }
 176
 177 static void
 178 destroy_wait(tdm_server_wait_info *wait_info)
 179 {
 180         LIST_DEL(&wait_info->link);
 181         free(wait_info);
 182 }
 183
 184 static void
 185 destroy_vblank_callback(struct wl_resource *resource)
 186 {
 187         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 188         tdm_server_wait_info *w = NULL, *ww = NULL;
 189
 190         TDM_RETURN_IF_FAIL(vblank_info != NULL);
 191
 192         if (vblank_info->vblank)
 193                 tdm_vblank_destroy(vblank_info->vblank);
 194
 195         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &keep_private_server->wait_list, link) {
 196                 if (w->vblank_info == vblank_info) {
 197                         destroy_wait(w);
 198                 }
 199         }
 200
 201         LIST_DEL(&vblank_info->link);
 202         free(vblank_info);
 203 }
 204
 205 static void
 206 _tdm_server_vblank_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 207 {
 208         wl_resource_destroy(resource);
 209 }
 210
 211 static void
 212 _tdm_server_vblank_cb_set_fps(struct wl_client *client, struct wl_resource *resource, uint32_t fps)
 213 {
 214         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 215
 216         tdm_vblank_set_fps(vblank_info->vblank, fps);
 217 }
 218
 219 static void
 220 _tdm_server_vblank_cb_set_offset(struct wl_client *client, struct wl_resource *resource, int32_t offset)
 221 {
 222         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 223
 224         tdm_vblank_set_offset(vblank_info->vblank, offset);
 225 }
 226
 227 static void
 228 _tdm_server_vblank_cb_set_enable_fake(struct wl_client *client, struct wl_resource *resource, uint32_t enable_fake)
 229 {
 230         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 231
 232         tdm_vblank_set_enable_fake(vblank_info->vblank, enable_fake);
 233 }
 234
 235 static void
 236 _tdm_server_vblank_cb_wait_vblank(struct wl_client *client, struct wl_resource *resource,
 237                                                                   uint32_t interval, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 238 {
 239         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 240         tdm_server_output_info *output_info = vblank_info->output_info;
 241         tdm_private_server *private_server = output_info->private_server;
 242         tdm_server_wait_info *wait_info;
 243         tdm_error ret;
 244
 245         wait_info = calloc(1, sizeof *wait_info);
 246         if (!wait_info) {
 247                 TDM_ERR("alloc failed");
 248                 ret = TDM_ERROR_OUT_OF_MEMORY;
 249                 goto wait_failed;
 250         }
 251
 252         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 253         wait_info->vblank_info = vblank_info;
 254         wait_info->req_id = req_id;
 255
 256         TDM_DBG("req_id(%d) wait", req_id);
 257
 258         ret = tdm_vblank_wait(vblank_info->vblank, req_sec, req_usec, interval, _tdm_server_cb_vblank, wait_info);
 259         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 260
 261         return;
 262 wait_failed:
 263         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 264 }
 265
 266 static const struct wl_tdm_vblank_interface tdm_vblank_implementation = {
 267         _tdm_server_vblank_cb_destroy,
 268         _tdm_server_vblank_cb_set_fps,
 269         _tdm_server_vblank_cb_set_offset,
 270         _tdm_server_vblank_cb_set_enable_fake,
 271         _tdm_server_vblank_cb_wait_vblank,
 272 };
 273
 274 static void
 275 _tdm_server_output_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 276 {
 277         wl_resource_destroy(resource);
 278 }
 279
 280 static void
 281 _tdm_server_output_cb_create_vblank(struct wl_client *client, struct wl_resource *resource, uint32_t id)
 282 {
 283         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 284         tdm_private_server *private_server = output_info->private_server;
 285         tdm_private_loop *private_loop = private_server->private_loop;
 286         struct wl_resource *vblank_resource;
 287         tdm_vblank *vblank;
 288         tdm_server_vblank_info *vblank_info;
 289
 290         vblank_resource =
 291                 wl_resource_create(client, &wl_tdm_vblank_interface,
 292                                                    wl_resource_get_version(resource), id);
 293         if (!vblank_resource) {
 294                 wl_resource_post_no_memory(resource);
 295                 TDM_ERR("wl_resource_create failed");
 296                 return;
 297         }
 298
 299         vblank = tdm_vblank_create(private_loop->dpy, output_info->output, NULL);
 300         if (!vblank) {
 301                 wl_resource_post_no_memory(resource);
 302                 wl_resource_destroy(vblank_resource);
 303                 TDM_ERR("tdm_vblank_create failed");
 304                 return;
 305         }
 306
 307         vblank_info = calloc(1, sizeof *vblank_info);
 308         if (!vblank_info) {
 309                 wl_resource_post_no_memory(resource);
 310                 wl_resource_destroy(vblank_resource);
 311                 tdm_vblank_destroy(vblank);
 312                 TDM_ERR("alloc failed");
 313                 return;
 314         }
 315
 316         LIST_ADDTAIL(&vblank_info->link, &output_info->vblank_list);
 317         vblank_info->output_info = output_info;
 318         vblank_info->resource = vblank_resource;
 319         vblank_info->vblank = vblank;
 320
 321         wl_resource_set_implementation(vblank_resource, &tdm_vblank_implementation,
 322                                                                    vblank_info, destroy_vblank_callback);
 323
 324         return;
 325 }
 326
 327 static const struct wl_tdm_output_interface tdm_output_implementation = {
 328         _tdm_server_output_cb_destroy,
 329         _tdm_server_output_cb_create_vblank,
 330 };
 331
 332 static void
 333 destroy_output_callback(struct wl_resource *resource)
 334 {
 335         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 336         tdm_server_vblank_info *v = NULL, *vv = NULL;
 337
 338         TDM_RETURN_IF_FAIL(output_info != NULL);
 339
 340         tdm_output_remove_change_handler(output_info->output,
 341                                                                          _tdm_server_cb_output_change, output_info);
 342
 343         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &output_info->vblank_list, link) {
 344                 wl_resource_destroy(v->resource);
 345         }
 346
 347         LIST_DEL(&output_info->link);
 348         free(output_info);
 349 }
 350
 351 static void
 352 _tdm_server_cb_create_output(struct wl_client *client, struct wl_resource *resource,
 353                                                          const char *name, uint32_t id)
 354 {
 355         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 356         tdm_server_output_info *output_info;
 357         struct wl_resource *output_resource = NULL;
 358         tdm_output *output;
 359         const tdm_output_mode *mode = NULL;
 360         tdm_output_dpms dpms_value;
 361         tdm_output_conn_status status;
 362
 363         output = _tdm_server_find_output(private_server, name);
 364         if (!output) {
 365                 TDM_ERR("There is no '%s' output", name);
 366                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 367                                "There is no '%s' output", name);
 368                 return;
 369         }
 370
 371         tdm_output_get_mode(output, &mode);
 372         if (!mode) {
 373                 TDM_ERR("no mode for '%s' output", name);
 374                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 375                                "no mode for '%s' output", name);
 376                 return;
 377         }
 378
 379         tdm_output_get_dpms(output, &dpms_value);
 380         tdm_output_get_conn_status(output, &status);
 381
 382         output_resource =
 383                 wl_resource_create(client, &wl_tdm_output_interface,
 384                                                    wl_resource_get_version(resource), id);
 385         if (!output_resource) {
 386                 wl_resource_post_no_memory(resource);
 387                 TDM_ERR("wl_resource_create failed");
 388                 return;
 389         }
 390
 391         output_info = calloc(1, sizeof * output_info);
 392         if (!output_info) {
 393                 wl_resource_post_no_memory(resource);
 394                 wl_resource_destroy(output_resource);
 395                 TDM_ERR("alloc failed");
 396                 return;
 397         }
 398
 399         LIST_ADDTAIL(&output_info->link, &private_server->output_list);
 400         output_info->private_server = private_server;
 401         output_info->resource = output_resource;
 402         output_info->output = output;
 403         LIST_INITHEAD(&output_info->vblank_list);
 404
 405         tdm_output_add_change_handler(output, _tdm_server_cb_output_change, output_info);
 406
 407         wl_resource_set_implementation(output_resource, &tdm_output_implementation,
 408                                                                    output_info, destroy_output_callback);
 409
 410         wl_tdm_output_send_mode(output_resource, mode->hdisplay, mode->vdisplay, mode->vrefresh);
 411         wl_tdm_output_send_dpms(output_resource, dpms_value);
 412         wl_tdm_output_send_connection(output_resource, status);
 413 }
 414
 415 static const struct wl_tdm_interface tdm_implementation = {
 416         _tdm_server_cb_create_output,
 417 };
 418
 419 static void
 420 _tdm_server_bind(struct wl_client *client, void *data,
 421                                  uint32_t version, uint32_t id)
 422 {
 423         struct wl_resource *resource;
 424
 425         resource = wl_resource_create(client, &wl_tdm_interface, version, id);
 426         if (!resource) {
 427                 wl_client_post_no_memory(client);
 428                 return;
 429         }
 430
 431         TDM_DBG("tdm server binding");
 432
 433         wl_resource_set_implementation(resource, &tdm_implementation, data, NULL);
 434 }
 435
 436 INTERN tdm_error
 437 tdm_server_init(tdm_private_loop *private_loop)
 438 {
 439         tdm_private_server *private_server;
 440
 441         if (private_loop->private_server)
 442                 return TDM_ERROR_NONE;
 443
 444         TDM_RETURN_VAL_IF_FAIL(private_loop, TDM_ERROR_OPERATION_FAILED);
 445         TDM_RETURN_VAL_IF_FAIL(private_loop->wl_display, TDM_ERROR_OPERATION_FAILED);
 446
 447         if (wl_display_add_socket(private_loop->wl_display, "tdm-socket")) {
 448                 TDM_ERR("createing a tdm-socket failed");
 449                 return TDM_ERROR_OPERATION_FAILED;
 450         }
 451
 452         private_server = calloc(1, sizeof * private_server);
 453         if (!private_server) {
 454                 TDM_ERR("alloc failed");
 455                 return TDM_ERROR_OUT_OF_MEMORY;
 456         }
 457
 458         LIST_INITHEAD(&private_server->output_list);
 459         LIST_INITHEAD(&private_server->wait_list);
 460
 461         if (!wl_global_create(private_loop->wl_display, &wl_tdm_interface, 1,
 462                                                   private_server, _tdm_server_bind)) {
 463                 TDM_ERR("creating a global resource failed");
 464                 free(private_server);
 465                 return TDM_ERROR_OUT_OF_MEMORY;
 466         }
 467
 468         private_server->private_loop = private_loop;
 469         private_loop->private_server = private_server;
 470         keep_private_server = private_server;
 471
 472         return TDM_ERROR_NONE;
 473 }
 474
 475 INTERN void
 476 tdm_server_deinit(tdm_private_loop *private_loop)
 477 {
 478         tdm_server_output_info *o = NULL, *oo = NULL;
 479         tdm_server_wait_info *w = NULL, *ww = NULL;
 480         tdm_private_server *private_server;
 481
 482         if (!private_loop->private_server)
 483                 return;
 484
 485         private_server = private_loop->private_server;
 486
 487         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_server->wait_list, link) {
 488                 destroy_wait(w);
 489         }
 490
 491         LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_server->output_list, link) {
 492                 wl_resource_destroy(o->resource);
 493         }
 494
 495         free(private_server);
 496         private_loop->private_server = NULL;
 497         keep_private_server = NULL;
 498 }