src/tdm_pp.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 <boram1288.park@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_private.h"
  41
  42 #define PP_FUNC_ENTRY() \
  43         tdm_private_module *private_module; \
  44         tdm_func_pp *func_pp; \
  45         tdm_private_display *private_display; \
  46         tdm_private_pp *private_pp; \
  47         tdm_error ret = TDM_ERROR_NONE; \
  48         TDM_RETURN_VAL_IF_FAIL(pp != NULL, TDM_ERROR_INVALID_PARAMETER); \
  49         private_pp = (tdm_private_pp*)pp; \
  50         private_display = private_pp->private_display; \
  51         private_module = private_pp->private_module; \
  52         func_pp = &private_module->func_pp
  53
  54 static void
  55 _tdm_pp_print_list(struct list_head *list)
  56 {
  57         tdm_pp_private_buffer *b = NULL;
  58         char str[512], *p;
  59         int len = sizeof(str);
  60
  61         TDM_RETURN_IF_FAIL(list != NULL);
  62
  63         str[0] = '\0';
  64         p = str;
  65         LIST_FOR_EACH_ENTRY(b, list, link) {
  66                 if (len > 0) {
  67                         tbm_bo src_bo = tbm_surface_internal_get_bo(b->src, 0);
  68                         tbm_bo dst_bo = tbm_surface_internal_get_bo(b->dst, 0);
  69                         int src_flags = tbm_bo_get_flags(src_bo);
  70                         int dst_flags = tbm_bo_get_flags(dst_bo);
  71                         int l = snprintf(p, len, " (%p[bo_flags:%x], %p[bo_flags:%x])",
  72                                                          b->src, src_flags, b->dst, dst_flags);
  73                         p += l;
  74                         len -= l;
  75                 } else
  76                         break;
  77         }
  78
  79         TDM_INFO("\t %s", str);
  80 }
  81
  82 static tdm_pp_private_buffer *
  83 _tdm_pp_find_tbm_buffers(struct list_head *list, tbm_surface_h src, tbm_surface_h dst)
  84 {
  85         tdm_pp_private_buffer *b = NULL, *bb = NULL;
  86
  87         LIST_FOR_EACH_ENTRY_SAFE(b, bb, list, link) {
  88                 if (b->src == src && b->dst == dst)
  89                         return b;
  90         }
  91
  92         return NULL;
  93 }
  94
  95 static tdm_pp_private_buffer *
  96 _tdm_pp_find_buffer(struct list_head *list, tdm_pp_private_buffer *pp_buffer)
  97 {
  98         tdm_pp_private_buffer *b = NULL, *bb = NULL;
  99
 100         LIST_FOR_EACH_ENTRY_SAFE(b, bb, list, link) {
 101                 if (b == pp_buffer)
 102                         return b;
 103         }
 104
 105         return NULL;
 106 }
 107
 108 static void
 109 _tdm_pp_thread_cb_done(tdm_private_display *private_display, void *object, tdm_thread_cb_base *cb_base, void *user_data)
 110 {
 111         tdm_thread_cb_pp_done *pp_done = (tdm_thread_cb_pp_done *)cb_base;
 112         tdm_private_pp *private_pp = object;
 113         tdm_pp_private_buffer *pp_buffer = NULL, *first_entry = NULL;
 114         tbm_surface_h src;
 115         tbm_surface_h dst;
 116
 117         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 118
 119         assert(private_pp->owner_tid == syscall(SYS_gettid));
 120
 121         src = pp_done->src;
 122         dst = pp_done->dst;
 123
 124         if (tdm_debug_dump & TDM_DUMP_FLAG_PP) {
 125                 /* LCOV_EXCL_START */
 126                 char str[TDM_PATH_LEN];
 127                 static int i;
 128                 snprintf(str, TDM_PATH_LEN, "pp_dst_%03d", i++);
 129                 tdm_helper_dump_buffer_str(dst, tdm_debug_dump_dir, str);
 130                 /* LCOV_EXCL_STOP */
 131         }
 132
 133         if (!LIST_IS_EMPTY(&private_pp->buffer_list)) {
 134                 first_entry = container_of((&private_pp->buffer_list)->next, pp_buffer, link);
 135                 if (first_entry->src != src || first_entry->dst != dst)
 136                         TDM_ERR("buffer(%p,%p) is skipped", first_entry->src, first_entry->dst);
 137         } else {
 138                 TDM_NEVER_GET_HERE();
 139         }
 140
 141         if ((pp_buffer = _tdm_pp_find_tbm_buffers(&private_pp->buffer_list, src, dst))) {
 142                 LIST_DEL(&pp_buffer->link);
 143                 LIST_DELINIT(&pp_buffer->commit_link);
 144
 145                 if (tdm_debug_module & TDM_DEBUG_BUFFER)
 146                         TDM_INFO("pp(%p) done: src(%p) dst(%p)", private_pp, src, dst);
 147
 148                 if (tdm_ttrace_module & TDM_TTRACE_PP) {
 149                         tbm_bo bo = tbm_surface_internal_get_bo(dst, 0);
 150                         TDM_TRACE_ASYNC_END((intptr_t)private_pp, "[PP] %d", tbm_bo_export(bo));
 151                 }
 152
 153                 _pthread_mutex_unlock(&private_display->lock);
 154                 if (private_pp->done_func)
 155                         private_pp->done_func(private_pp, src, dst, private_pp->done_user_data);
 156                 tdm_buffer_unref_backend(src);
 157                 tdm_buffer_unref_backend(dst);
 158                 _pthread_mutex_lock(&private_display->lock);
 159
 160                 free(pp_buffer);
 161         }
 162 }
 163
 164 static void
 165 _tdm_pp_cb_done(tdm_pp *pp_module, tbm_surface_h src, tbm_surface_h dst, void *user_data)
 166 {
 167         tdm_thread_cb_pp_done pp_done;
 168         tdm_private_pp *private_pp = user_data;
 169         tdm_error ret;
 170
 171         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 172
 173         memset(&pp_done, 0, sizeof pp_done);
 174         pp_done.base.type = TDM_THREAD_CB_PP_DONE;
 175         pp_done.base.length = sizeof pp_done;
 176         pp_done.base.object_stamp = private_pp->stamp;
 177         pp_done.base.data = NULL;
 178         pp_done.base.sync = 0;
 179         pp_done.src = src;
 180         pp_done.dst = dst;
 181
 182         ret = tdm_thread_cb_call(private_pp, &pp_done.base, 1);
 183         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 184 }
 185
 186 static void *
 187 _tdm_pp_find_object(tdm_private_display *private_display, double stamp)
 188 {
 189         tdm_private_module *private_module = NULL;
 190         tdm_private_pp *private_pp = NULL;
 191
 192         TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), NULL);
 193
 194         LIST_FOR_EACH_ENTRY(private_module, &private_display->module_list, link) {
 195                 LIST_FOR_EACH_ENTRY(private_pp, &private_module->pp_list, link) {
 196                         if (private_pp->stamp == stamp)
 197                                 return private_pp;
 198                 }
 199         }
 200
 201         return NULL;
 202 }
 203
 204 INTERN tdm_error
 205 tdm_pp_init(tdm_private_display *private_display)
 206 {
 207         tdm_thread_cb_set_find_func(TDM_THREAD_CB_PP_DONE, _tdm_pp_find_object);
 208
 209         return TDM_ERROR_NONE;
 210 }
 211
 212 INTERN tdm_private_pp *
 213 tdm_pp_create_internal(tdm_private_module *private_module, tdm_error *error)
 214 {
 215         tdm_private_display *private_display;
 216         tdm_func_display *func_display;
 217         tdm_func_pp *func_pp;
 218         tdm_private_pp *private_pp = NULL;
 219         tdm_pp *pp_module = NULL;
 220         tdm_error ret = TDM_ERROR_NONE;
 221
 222         TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), NULL);
 223         TDM_RETURN_VAL_IF_FAIL(private_module != NULL, NULL);
 224
 225         private_display = private_module->private_display;
 226         func_display = &private_module->func_display;
 227         func_pp = &private_module->func_pp;
 228
 229         if (!(private_module->capabilities & TDM_DISPLAY_CAPABILITY_PP)) {
 230                 /* LCOV_EXCL_START */
 231                 TDM_ERR("backedn(%s) no pp capability", private_module->module_data->name);
 232                 if (error)
 233                         *error = TDM_ERROR_NO_CAPABILITY;
 234                 return NULL;
 235                 /* LCOV_EXCL_STOP */
 236         }
 237
 238         pp_module = func_display->display_create_pp(private_module->bdata, &ret);
 239         if (ret != TDM_ERROR_NONE) {
 240                 /* LCOV_EXCL_START */
 241                 if (error)
 242                         *error = ret;
 243                 return NULL;
 244                 /* LCOV_EXCL_STOP */
 245         }
 246
 247         private_pp = calloc(1, sizeof(tdm_private_pp));
 248         if (!private_pp) {
 249                 /* LCOV_EXCL_START */
 250                 TDM_ERR("failed: alloc memory");
 251                 func_pp->pp_destroy(pp_module);
 252                 if (error)
 253                         *error = TDM_ERROR_OUT_OF_MEMORY;
 254                 return NULL;
 255                 /* LCOV_EXCL_STOP */
 256         }
 257
 258         ret = tdm_thread_cb_add(private_pp, TDM_THREAD_CB_PP_DONE, NULL, _tdm_pp_thread_cb_done, NULL);
 259         if (ret != TDM_ERROR_NONE) {
 260                 TDM_ERR("pp tdm_thread_cb_add failed");
 261                 func_pp->pp_destroy(pp_module);
 262                 free(private_pp);
 263                 if (error)
 264                         *error = ret;
 265                 return NULL;
 266         }
 267
 268         ret = func_pp->pp_set_done_handler(pp_module, _tdm_pp_cb_done, private_pp);
 269         if (ret != TDM_ERROR_NONE) {
 270                 /* LCOV_EXCL_START */
 271                 TDM_ERR("spp(%p) et pp_done_handler failed", private_pp);
 272                 func_pp->pp_destroy(pp_module);
 273                 free(private_pp);
 274                 if (error)
 275                         *error = ret;
 276                 return NULL;
 277                 /* LCOV_EXCL_STOP */
 278         }
 279
 280         private_pp->stamp = tdm_helper_get_time();
 281         while (_tdm_pp_find_object(private_display, private_pp->stamp))
 282                 private_pp->stamp++;
 283
 284         LIST_ADD(&private_pp->link, &private_module->pp_list);
 285         private_pp->private_display = private_module->private_display;
 286         private_pp->private_module = private_module;
 287         private_pp->pp_module = pp_module;
 288         private_pp->owner_tid = syscall(SYS_gettid);
 289
 290         LIST_INITHEAD(&private_pp->pending_buffer_list);
 291         LIST_INITHEAD(&private_pp->buffer_list);
 292
 293         if (error)
 294                 *error = TDM_ERROR_NONE;
 295
 296         return private_pp;
 297 }
 298
 299 INTERN void
 300 tdm_pp_destroy_internal(tdm_private_pp *private_pp)
 301 {
 302         tdm_private_display *private_display;
 303         tdm_private_module *private_module;
 304         tdm_func_pp *func_pp;
 305         tdm_pp_private_buffer *b = NULL, *bb = NULL;
 306         struct list_head clone_list;
 307
 308         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 309
 310         if (!private_pp)
 311                 return;
 312
 313         tdm_thread_cb_remove(private_pp, TDM_THREAD_CB_PP_DONE, NULL, _tdm_pp_thread_cb_done, NULL);
 314
 315         private_display = private_pp->private_display;
 316         private_module = private_pp->private_module;
 317         func_pp = &private_module->func_pp;
 318
 319         LIST_DEL(&private_pp->link);
 320
 321         func_pp->pp_destroy(private_pp->pp_module);
 322
 323         if (!LIST_IS_EMPTY(&private_pp->pending_buffer_list)) {
 324                 TDM_WRN("pp(%p) not finished:", private_pp);
 325                 _tdm_pp_print_list(&private_pp->pending_buffer_list);
 326
 327                 LIST_INITHEAD(&clone_list);
 328                 LIST_FOR_EACH_ENTRY_SAFE(b, bb, &private_pp->pending_buffer_list, link) {
 329                         LIST_DEL(&b->link);
 330                         LIST_ADDTAIL(&b->link, &clone_list);
 331                 }
 332
 333                 _pthread_mutex_unlock(&private_display->lock);
 334                 LIST_FOR_EACH_ENTRY_SAFE(b, bb, &clone_list, link) {
 335                         LIST_DEL(&b->link);
 336
 337                         if (tdm_ttrace_module & TDM_TTRACE_PP) {
 338                                 tbm_bo bo = tbm_surface_internal_get_bo(b->dst, 0);
 339                                 TDM_TRACE_ASYNC_END((intptr_t)private_pp, "[PP] %d", tbm_bo_export(bo));
 340                         }
 341
 342                         tdm_buffer_unref_backend(b->src);
 343                         tdm_buffer_unref_backend(b->dst);
 344                         free(b);
 345                 }
 346                 _pthread_mutex_lock(&private_display->lock);
 347         }
 348
 349         if (!LIST_IS_EMPTY(&private_pp->buffer_list)) {
 350                 TDM_WRN("pp(%p) not finished:", private_pp);
 351                 _tdm_pp_print_list(&private_pp->buffer_list);
 352
 353                 LIST_INITHEAD(&clone_list);
 354                 LIST_FOR_EACH_ENTRY_SAFE(b, bb, &private_pp->buffer_list, link) {
 355                         LIST_DEL(&b->link);
 356                         LIST_ADDTAIL(&b->link, &clone_list);
 357                 }
 358
 359                 _pthread_mutex_unlock(&private_display->lock);
 360                 LIST_FOR_EACH_ENTRY_SAFE(b, bb, &clone_list, link) {
 361                         LIST_DEL(&b->link);
 362
 363                         if (tdm_ttrace_module & TDM_TTRACE_PP) {
 364                                 tbm_bo bo = tbm_surface_internal_get_bo(b->dst, 0);
 365                                 TDM_TRACE_ASYNC_END((intptr_t)private_pp, "[PP] %d", tbm_bo_export(bo));
 366                         }
 367
 368                         tdm_buffer_unref_backend(b->src);
 369                         tdm_buffer_unref_backend(b->dst);
 370                         free(b);
 371                 }
 372                 _pthread_mutex_lock(&private_display->lock);
 373         }
 374
 375         private_pp->stamp = 0;
 376         free(private_pp);
 377 }
 378
 379 EXTERN void
 380 tdm_pp_destroy(tdm_pp *pp)
 381 {
 382         tdm_private_pp *private_pp = pp;
 383         tdm_private_display *private_display;
 384
 385         if (!private_pp)
 386                 return;
 387
 388         private_display = private_pp->private_display;
 389
 390         _pthread_mutex_lock(&private_display->lock);
 391         tdm_pp_destroy_internal(private_pp);
 392         _pthread_mutex_unlock(&private_display->lock);
 393 }
 394
 395 EXTERN tdm_error
 396 tdm_pp_set_info(tdm_pp *pp, tdm_info_pp *info)
 397 {
 398         PP_FUNC_ENTRY();
 399
 400         TDM_RETURN_VAL_IF_FAIL(info != NULL, TDM_ERROR_INVALID_PARAMETER);
 401
 402         _pthread_mutex_lock(&private_display->lock);
 403
 404         if (!func_pp->pp_set_info) {
 405                 /* LCOV_EXCL_START */
 406                 _pthread_mutex_unlock(&private_display->lock);
 407                 TDM_DBG("failed: not implemented!!");
 408                 return TDM_ERROR_NOT_IMPLEMENTED;
 409                 /* LCOV_EXCL_STOP */
 410         }
 411
 412         TDM_INFO("pp(%p) info: src(%ux%u %u,%u %ux%u %c%c%c%c) dst(%ux%u %u,%u %ux%u %c%c%c%c) trans(%d) sync(%d) flags(%x)",
 413                          private_pp, info->src_config.size.h, info->src_config.size.v,
 414                          info->src_config.pos.x, info->src_config.pos.y,
 415                          info->src_config.pos.w, info->src_config.pos.h,
 416                          FOURCC_STR(info->src_config.format),
 417                          info->dst_config.size.h, info->dst_config.size.v,
 418                          info->dst_config.pos.x, info->dst_config.pos.y,
 419                          info->dst_config.pos.w, info->dst_config.pos.h,
 420                          FOURCC_STR(info->dst_config.format),
 421                          info->transform, info->sync, info->flags);
 422
 423         ret = func_pp->pp_set_info(private_pp->pp_module, info);
 424         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 425
 426         private_pp->info = *info;
 427
 428         _pthread_mutex_unlock(&private_display->lock);
 429
 430         return ret;
 431 }
 432
 433 EXTERN tdm_error
 434 tdm_pp_set_done_handler(tdm_pp *pp, tdm_pp_done_handler func, void *user_data)
 435 {
 436         tdm_private_display *private_display;
 437         tdm_private_pp *private_pp;
 438         tdm_error ret = TDM_ERROR_NONE;
 439
 440         TDM_RETURN_VAL_IF_FAIL(pp != NULL, TDM_ERROR_INVALID_PARAMETER);
 441
 442         private_pp = (tdm_private_pp*)pp;
 443         private_display = private_pp->private_display;
 444
 445         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
 446
 447         _pthread_mutex_lock(&private_display->lock);
 448
 449         private_pp->done_func = func;
 450         private_pp->done_user_data = user_data;
 451
 452         _pthread_mutex_unlock(&private_display->lock);
 453
 454         return ret;
 455 }
 456
 457 EXTERN tdm_error
 458 tdm_pp_attach(tdm_pp *pp, tbm_surface_h src, tbm_surface_h dst)
 459 {
 460         tdm_pp_private_buffer *pp_buffer;
 461
 462         PP_FUNC_ENTRY();
 463
 464         TDM_RETURN_VAL_IF_FAIL(src != NULL, TDM_ERROR_INVALID_PARAMETER);
 465         TDM_RETURN_VAL_IF_FAIL(dst != NULL, TDM_ERROR_INVALID_PARAMETER);
 466
 467         _pthread_mutex_lock(&private_display->lock);
 468
 469         if (!func_pp->pp_attach) {
 470                 /* LCOV_EXCL_START */
 471                 _pthread_mutex_unlock(&private_display->lock);
 472                 TDM_DBG("failed: not implemented!!");
 473                 return TDM_ERROR_NOT_IMPLEMENTED;
 474                 /* LCOV_EXCL_STOP */
 475         }
 476
 477         if (tdm_module_check_abi(private_module, 1, 2) &&
 478                 private_module->caps_pp.max_attach_count > 0) {
 479                 /* LCOV_EXCL_START */
 480                 int length = LIST_LENGTH(&private_pp->pending_buffer_list) +
 481                                          LIST_LENGTH(&private_pp->buffer_list);
 482                 if (length >= private_module->caps_pp.max_attach_count) {
 483                         _pthread_mutex_unlock(&private_display->lock);
 484                         TDM_DBG("failed: backend(%s) too many attached!! max_attach_count(%d)",
 485                                         private_module->module_data->name, private_module->caps_pp.max_attach_count);
 486                         return TDM_ERROR_BAD_REQUEST;
 487                 }
 488                 /* LCOV_EXCL_STOP */
 489         }
 490
 491         if (tdm_debug_dump & TDM_DUMP_FLAG_PP) {
 492                 /* LCOV_EXCL_START */
 493                 char str[TDM_PATH_LEN];
 494                 static int i;
 495                 snprintf(str, TDM_PATH_LEN, "pp_src_%03d", i++);
 496                 tdm_helper_dump_buffer_str(src, tdm_debug_dump_dir, str);
 497                 /* LCOV_EXCL_STOP */
 498         }
 499
 500         pp_buffer = calloc(1, sizeof * pp_buffer);
 501         if (!pp_buffer) {
 502                 /* LCOV_EXCL_START */
 503                 _pthread_mutex_unlock(&private_display->lock);
 504                 TDM_ERR("alloc failed");
 505                 return TDM_ERROR_OUT_OF_MEMORY;
 506                 /* LCOV_EXCL_STOP */
 507         }
 508
 509         ret = func_pp->pp_attach(private_pp->pp_module, src, dst);
 510         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 511
 512         if (ret != TDM_ERROR_NONE) {
 513                 /* LCOV_EXCL_START */
 514                 free(pp_buffer);
 515                 _pthread_mutex_unlock(&private_display->lock);
 516                 TDM_ERR("attach failed");
 517                 return ret;
 518                 /* LCOV_EXCL_STOP */
 519         }
 520
 521         LIST_ADDTAIL(&pp_buffer->link, &private_pp->pending_buffer_list);
 522         pp_buffer->src = tdm_buffer_ref_backend(src);
 523         pp_buffer->dst = tdm_buffer_ref_backend(dst);
 524
 525         if (tdm_debug_module & TDM_DEBUG_BUFFER) {
 526                 TDM_INFO("pp(%p) attached:", private_pp);
 527                 _tdm_pp_print_list(&private_pp->pending_buffer_list);
 528         }
 529
 530         if (tdm_ttrace_module & TDM_TTRACE_PP) {
 531                 tbm_bo bo = tbm_surface_internal_get_bo(dst, 0);
 532                 TDM_TRACE_ASYNC_BEGIN((intptr_t)pp, "[PP] %d", tbm_bo_export(bo));
 533         }
 534
 535         _pthread_mutex_unlock(&private_display->lock);
 536
 537         return ret;
 538 }
 539
 540 EXTERN tdm_error
 541 tdm_pp_commit(tdm_pp *pp)
 542 {
 543         tdm_pp_private_buffer *b = NULL, *bb = NULL;
 544         struct list_head commit_buffer_list;
 545
 546         PP_FUNC_ENTRY();
 547
 548         _pthread_mutex_lock(&private_display->lock);
 549
 550         if (!func_pp->pp_commit) {
 551                 /* LCOV_EXCL_START */
 552                 _pthread_mutex_unlock(&private_display->lock);
 553                 TDM_DBG("failed: not implemented!!");
 554                 return TDM_ERROR_NOT_IMPLEMENTED;
 555                 /* LCOV_EXCL_STOP */
 556         }
 557
 558         LIST_INITHEAD(&commit_buffer_list);
 559
 560         LIST_FOR_EACH_ENTRY_SAFE(b, bb, &private_pp->pending_buffer_list, link) {
 561                 LIST_DEL(&b->link);
 562                 LIST_ADDTAIL(&b->link, &private_pp->buffer_list);
 563                 LIST_ADDTAIL(&b->commit_link, &commit_buffer_list);
 564         }
 565
 566         ret = func_pp->pp_commit(private_pp->pp_module);
 567         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 568
 569         LIST_FOR_EACH_ENTRY_SAFE(b, bb, &commit_buffer_list, commit_link) {
 570                 LIST_DELINIT(&b->commit_link);
 571
 572                 if (!_tdm_pp_find_buffer(&private_pp->buffer_list, b))
 573                         continue;
 574
 575                 if (ret != TDM_ERROR_NONE) {
 576                         /* Not to call the user release handler when failed.
 577                          * Do we have to call this function here really?
 578                          * User better use set_done_handler to know when pp is done. Using
 579                          * buffer_release_handler is not good.
 580                          */
 581                         tdm_buffer_remove_release_handler_internal(b->src);
 582                         tdm_buffer_remove_release_handler_internal(b->dst);
 583
 584                         _pthread_mutex_unlock(&private_display->lock);
 585                         tdm_buffer_unref_backend(b->src);
 586                         tdm_buffer_unref_backend(b->dst);
 587                         _pthread_mutex_lock(&private_display->lock);
 588                         LIST_DEL(&b->link);
 589
 590                         free(b);
 591                 }
 592         }
 593
 594         _pthread_mutex_unlock(&private_display->lock);
 595
 596         return ret;
 597 }