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         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 144                 TDM_INFO("req_id(%d) done", wait_info->req_id);
 145
 146         vblank_info = wait_info->vblank_info;
 147         wl_tdm_vblank_send_done(vblank_info->resource, wait_info->req_id,
 148                                                         sequence, tv_sec, tv_usec, error);
 149         destroy_wait(wait_info);
 150 }
 151
 152 static void
 153 _tdm_server_cb_vblank(tdm_vblank *vblank, tdm_error error, unsigned int sequence,
 154                                           unsigned int tv_sec, unsigned int tv_usec, void *user_data)
 155 {
 156         _tdm_server_send_done((tdm_server_wait_info*)user_data, error, sequence, tv_sec, tv_usec);
 157 }
 158
 159 static void
 160 _tdm_server_cb_output_change(tdm_output *output, tdm_output_change_type type,
 161                                                          tdm_value value, void *user_data)
 162 {
 163         tdm_server_output_info *output_info = user_data;
 164
 165         TDM_RETURN_IF_FAIL(output_info != NULL);
 166
 167         switch (type) {
 168         case TDM_OUTPUT_CHANGE_DPMS:
 169                 wl_tdm_output_send_dpms(output_info->resource, value.u32);
 170                 break;
 171         case TDM_OUTPUT_CHANGE_CONNECTION:
 172                 wl_tdm_output_send_connection(output_info->resource, value.u32);
 173                 break;
 174         default:
 175                 break;
 176         }
 177 }
 178
 179 static void
 180 destroy_wait(tdm_server_wait_info *wait_info)
 181 {
 182         LIST_DEL(&wait_info->link);
 183         free(wait_info);
 184 }
 185
 186 static void
 187 destroy_vblank_callback(struct wl_resource *resource)
 188 {
 189         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 190         tdm_server_wait_info *w = NULL, *ww = NULL;
 191
 192         TDM_RETURN_IF_FAIL(vblank_info != NULL);
 193
 194         if (vblank_info->vblank)
 195                 tdm_vblank_destroy(vblank_info->vblank);
 196
 197         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &keep_private_server->wait_list, link) {
 198                 if (w->vblank_info == vblank_info) {
 199                         destroy_wait(w);
 200                 }
 201         }
 202
 203         LIST_DEL(&vblank_info->link);
 204         free(vblank_info);
 205 }
 206
 207 static void
 208 _tdm_server_vblank_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 209 {
 210         wl_resource_destroy(resource);
 211 }
 212
 213 static void
 214 _tdm_server_vblank_cb_set_fps(struct wl_client *client, struct wl_resource *resource, uint32_t fps)
 215 {
 216         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 217
 218         tdm_vblank_set_fps(vblank_info->vblank, fps);
 219 }
 220
 221 static void
 222 _tdm_server_vblank_cb_set_offset(struct wl_client *client, struct wl_resource *resource, int32_t offset)
 223 {
 224         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 225
 226         tdm_vblank_set_offset(vblank_info->vblank, offset);
 227 }
 228
 229 static void
 230 _tdm_server_vblank_cb_set_enable_fake(struct wl_client *client, struct wl_resource *resource, uint32_t enable_fake)
 231 {
 232         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 233
 234         tdm_vblank_set_enable_fake(vblank_info->vblank, enable_fake);
 235 }
 236
 237 static void
 238 _tdm_server_vblank_cb_wait_vblank(struct wl_client *client, struct wl_resource *resource,
 239                                                                   uint32_t interval, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 240 {
 241         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 242         tdm_server_output_info *output_info = vblank_info->output_info;
 243         tdm_private_server *private_server = output_info->private_server;
 244         tdm_server_wait_info *wait_info;
 245         tdm_error ret;
 246
 247         wait_info = calloc(1, sizeof *wait_info);
 248         if (!wait_info) {
 249                 TDM_ERR("alloc failed");
 250                 ret = TDM_ERROR_OUT_OF_MEMORY;
 251                 goto wait_failed;
 252         }
 253
 254         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 255         wait_info->vblank_info = vblank_info;
 256         wait_info->req_id = req_id;
 257
 258         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 259                 TDM_INFO("req_id(%d) wait", req_id);
 260
 261         ret = tdm_vblank_wait(vblank_info->vblank, req_sec, req_usec, interval, _tdm_server_cb_vblank, wait_info);
 262         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 263
 264         return;
 265 wait_failed:
 266         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 267 }
 268
 269 static const struct wl_tdm_vblank_interface tdm_vblank_implementation = {
 270         _tdm_server_vblank_cb_destroy,
 271         _tdm_server_vblank_cb_set_fps,
 272         _tdm_server_vblank_cb_set_offset,
 273         _tdm_server_vblank_cb_set_enable_fake,
 274         _tdm_server_vblank_cb_wait_vblank,
 275 };
 276
 277 static void
 278 _tdm_server_output_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 279 {
 280         wl_resource_destroy(resource);
 281 }
 282
 283 static void
 284 _tdm_server_output_cb_create_vblank(struct wl_client *client, struct wl_resource *resource, uint32_t id)
 285 {
 286         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 287         tdm_private_server *private_server = output_info->private_server;
 288         tdm_private_loop *private_loop = private_server->private_loop;
 289         struct wl_resource *vblank_resource;
 290         tdm_vblank *vblank;
 291         tdm_server_vblank_info *vblank_info;
 292
 293         vblank_resource =
 294                 wl_resource_create(client, &wl_tdm_vblank_interface,
 295                                                    wl_resource_get_version(resource), id);
 296         if (!vblank_resource) {
 297                 wl_resource_post_no_memory(resource);
 298                 TDM_ERR("wl_resource_create failed");
 299                 return;
 300         }
 301
 302         vblank = tdm_vblank_create(private_loop->dpy, output_info->output, NULL);
 303         if (!vblank) {
 304                 wl_resource_post_no_memory(resource);
 305                 wl_resource_destroy(vblank_resource);
 306                 TDM_ERR("tdm_vblank_create failed");
 307                 return;
 308         }
 309
 310         vblank_info = calloc(1, sizeof *vblank_info);
 311         if (!vblank_info) {
 312                 wl_resource_post_no_memory(resource);
 313                 wl_resource_destroy(vblank_resource);
 314                 tdm_vblank_destroy(vblank);
 315                 TDM_ERR("alloc failed");
 316                 return;
 317         }
 318
 319         LIST_ADDTAIL(&vblank_info->link, &output_info->vblank_list);
 320         vblank_info->output_info = output_info;
 321         vblank_info->resource = vblank_resource;
 322         vblank_info->vblank = vblank;
 323
 324         wl_resource_set_implementation(vblank_resource, &tdm_vblank_implementation,
 325                                                                    vblank_info, destroy_vblank_callback);
 326
 327         return;
 328 }
 329
 330 static const struct wl_tdm_output_interface tdm_output_implementation = {
 331         _tdm_server_output_cb_destroy,
 332         _tdm_server_output_cb_create_vblank,
 333 };
 334
 335 static void
 336 destroy_output_callback(struct wl_resource *resource)
 337 {
 338         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 339         tdm_server_vblank_info *v = NULL, *vv = NULL;
 340
 341         TDM_RETURN_IF_FAIL(output_info != NULL);
 342
 343         tdm_output_remove_change_handler(output_info->output,
 344                                                                          _tdm_server_cb_output_change, output_info);
 345
 346         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &output_info->vblank_list, link) {
 347                 wl_resource_destroy(v->resource);
 348         }
 349
 350         LIST_DEL(&output_info->link);
 351         free(output_info);
 352 }
 353
 354 static void
 355 _tdm_server_cb_create_output(struct wl_client *client, struct wl_resource *resource,
 356                                                          const char *name, uint32_t id)
 357 {
 358         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 359         tdm_server_output_info *output_info;
 360         struct wl_resource *output_resource = NULL;
 361         tdm_output *output;
 362         const tdm_output_mode *mode = NULL;
 363         tdm_output_dpms dpms_value;
 364         tdm_output_conn_status status;
 365
 366         output = _tdm_server_find_output(private_server, name);
 367         if (!output) {
 368                 TDM_ERR("There is no '%s' output", name);
 369                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 370                                "There is no '%s' output", name);
 371                 return;
 372         }
 373
 374         tdm_output_get_mode(output, &mode);
 375         if (!mode) {
 376                 TDM_ERR("no mode for '%s' output", name);
 377                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 378                                "no mode for '%s' output", name);
 379                 return;
 380         }
 381
 382         tdm_output_get_dpms(output, &dpms_value);
 383         tdm_output_get_conn_status(output, &status);
 384
 385         output_resource =
 386                 wl_resource_create(client, &wl_tdm_output_interface,
 387                                                    wl_resource_get_version(resource), id);
 388         if (!output_resource) {
 389                 wl_resource_post_no_memory(resource);
 390                 TDM_ERR("wl_resource_create failed");
 391                 return;
 392         }
 393
 394         output_info = calloc(1, sizeof * output_info);
 395         if (!output_info) {
 396                 wl_resource_post_no_memory(resource);
 397                 wl_resource_destroy(output_resource);
 398                 TDM_ERR("alloc failed");
 399                 return;
 400         }
 401
 402         LIST_ADDTAIL(&output_info->link, &private_server->output_list);
 403         output_info->private_server = private_server;
 404         output_info->resource = output_resource;
 405         output_info->output = output;
 406         LIST_INITHEAD(&output_info->vblank_list);
 407
 408         tdm_output_add_change_handler(output, _tdm_server_cb_output_change, output_info);
 409
 410         wl_resource_set_implementation(output_resource, &tdm_output_implementation,
 411                                                                    output_info, destroy_output_callback);
 412
 413         wl_tdm_output_send_mode(output_resource, mode->hdisplay, mode->vdisplay, mode->vrefresh);
 414         wl_tdm_output_send_dpms(output_resource, dpms_value);
 415         wl_tdm_output_send_connection(output_resource, status);
 416 }
 417
 418 static void
 419 _tdm_server_cb_debug(struct wl_client *client, struct wl_resource *resource, const char *options)
 420 {
 421         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 422         tdm_private_loop *private_loop = private_server->private_loop;
 423
 424         char message[TDM_SERVER_REPLY_MSG_LEN];
 425         int size = sizeof(message);
 426
 427         tdm_dbg_server_command(private_loop->dpy, options, message, &size);
 428         wl_tdm_send_debug_done(resource, message);
 429 }
 430
 431 static const struct wl_tdm_interface tdm_implementation = {
 432         _tdm_server_cb_create_output,
 433         _tdm_server_cb_debug,
 434 };
 435
 436 static void
 437 _tdm_server_bind(struct wl_client *client, void *data,
 438                                  uint32_t version, uint32_t id)
 439 {
 440         struct wl_resource *resource;
 441
 442         resource = wl_resource_create(client, &wl_tdm_interface, version, id);
 443         if (!resource) {
 444                 wl_client_post_no_memory(client);
 445                 return;
 446         }
 447
 448         wl_resource_set_implementation(resource, &tdm_implementation, data, NULL);
 449 }
 450
 451 INTERN tdm_error
 452 tdm_server_init(tdm_private_loop *private_loop)
 453 {
 454         tdm_private_server *private_server;
 455
 456         if (private_loop->private_server)
 457                 return TDM_ERROR_NONE;
 458
 459         TDM_RETURN_VAL_IF_FAIL(private_loop, TDM_ERROR_OPERATION_FAILED);
 460         TDM_RETURN_VAL_IF_FAIL(private_loop->wl_display, TDM_ERROR_OPERATION_FAILED);
 461
 462         if (wl_display_add_socket(private_loop->wl_display, "tdm-socket")) {
 463                 TDM_ERR("createing a tdm-socket failed");
 464                 return TDM_ERROR_OPERATION_FAILED;
 465         }
 466
 467         private_server = calloc(1, sizeof * private_server);
 468         if (!private_server) {
 469                 TDM_ERR("alloc failed");
 470                 return TDM_ERROR_OUT_OF_MEMORY;
 471         }
 472
 473         LIST_INITHEAD(&private_server->output_list);
 474         LIST_INITHEAD(&private_server->wait_list);
 475
 476         if (!wl_global_create(private_loop->wl_display, &wl_tdm_interface, 1,
 477                                                   private_server, _tdm_server_bind)) {
 478                 TDM_ERR("creating a global resource failed");
 479                 free(private_server);
 480                 return TDM_ERROR_OUT_OF_MEMORY;
 481         }
 482
 483         private_server->private_loop = private_loop;
 484         private_loop->private_server = private_server;
 485         keep_private_server = private_server;
 486
 487         return TDM_ERROR_NONE;
 488 }
 489
 490 INTERN void
 491 tdm_server_deinit(tdm_private_loop *private_loop)
 492 {
 493         tdm_server_output_info *o = NULL, *oo = NULL;
 494         tdm_server_wait_info *w = NULL, *ww = NULL;
 495         tdm_private_server *private_server;
 496
 497         if (!private_loop->private_server)
 498                 return;
 499
 500         private_server = private_loop->private_server;
 501
 502         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_server->wait_list, link) {
 503                 destroy_wait(w);
 504         }
 505
 506         LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_server->output_list, link) {
 507                 wl_resource_destroy(o->resource);
 508         }
 509
 510         free(private_server);
 511         private_loop->private_server = NULL;
 512         keep_private_server = NULL;
 513 }