src/tdm_capture.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_private.h"
  41
  42 #define CAPTURE_FUNC_ENTRY() \
  43         tdm_func_capture *func_capture; \
  44         tdm_private_display *private_display; \
  45         tdm_private_module *private_module; \
  46         tdm_private_capture *private_capture; \
  47         tdm_error ret = TDM_ERROR_NONE; \
  48         TDM_RETURN_VAL_IF_FAIL(capture != NULL, TDM_ERROR_INVALID_PARAMETER); \
  49         private_capture = (tdm_private_capture*)capture; \
  50         private_display = private_capture->private_display; \
  51         private_module = private_capture->private_module; \
  52         func_capture = &private_module->func_capture
  53
  54 static void
  55 _tdm_capture_print_list(struct list_head *list)
  56 {
  57         tdm_capture_private_buffer *b = NULL;
  58         char str[512], *p;
  59         int len = sizeof(str);
  60
  61         TDM_RETURN_IF_FAIL(list != NULL);
  62
  63         p = str;
  64         LIST_FOR_EACH_ENTRY(b, list, link) {
  65                 if (len > 0) {
  66                         int l = snprintf(p, len, " (%p)", b->buffer);
  67                         p += l;
  68                         len -= l;
  69                 } else
  70                         break;
  71         }
  72
  73         TDM_INFO("\t %s", str);
  74 }
  75
  76 static tdm_capture_private_buffer *
  77 _tdm_capture_find_tbm_buffer(struct list_head *list, tbm_surface_h buffer)
  78 {
  79         tdm_capture_private_buffer *b = NULL, *bb = NULL;
  80
  81         LIST_FOR_EACH_ENTRY_SAFE(b, bb, list, link) {
  82                 if (b->buffer == buffer)
  83                         return b;
  84         }
  85
  86         return NULL;
  87 }
  88
  89 static tdm_capture_private_buffer *
  90 _tdm_capture_find_buffer(struct list_head *list, tdm_capture_private_buffer *capture_buffer)
  91 {
  92         tdm_capture_private_buffer *b = NULL, *bb = NULL;
  93
  94         LIST_FOR_EACH_ENTRY_SAFE(b, bb, list, link) {
  95                 if (b == capture_buffer)
  96                         return b;
  97         }
  98
  99         return NULL;
 100 }
 101
 102 static void
 103 _tdm_capture_thread_cb_done(tdm_private_display *private_display, void *object, tdm_thread_cb_base *cb_base, void *user_data)
 104 {
 105         tdm_thread_cb_capture_done *capture_done = (tdm_thread_cb_capture_done *)cb_base;
 106         tdm_private_capture *private_capture = object;
 107         tdm_capture_private_buffer *capture_buffer = NULL, *first_entry = NULL;
 108         tbm_surface_h buffer;
 109
 110         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 111
 112         assert(private_capture->owner_tid == syscall(SYS_gettid));
 113
 114         buffer = capture_done->buffer;
 115
 116         if (tdm_debug_dump & TDM_DUMP_FLAG_CAPTURE) {
 117                 /* LCOV_EXCL_START */
 118                 char str[TDM_PATH_LEN];
 119                 static int i;
 120                 snprintf(str, TDM_PATH_LEN, "capture_%03d", i++);
 121                 tdm_helper_dump_buffer_str(buffer, tdm_debug_dump_dir, str);
 122                 /* LCOV_EXCL_STOP */
 123         }
 124
 125         if (tdm_debug_module & TDM_DEBUG_BUFFER)
 126                 TDM_INFO("capture(%p) done: %p", private_capture, buffer);
 127
 128         if (tdm_ttrace_module & TDM_TTRACE_CAPTURE) {
 129                 tbm_bo bo = tbm_surface_internal_get_bo(buffer, 0);
 130                 TDM_TRACE_ASYNC_END((intptr_t)private_capture, "[CAPTURE] %d", tbm_bo_export(bo));
 131         }
 132
 133         if (!LIST_IS_EMPTY(&private_capture->buffer_list)) {
 134                 first_entry = container_of((&private_capture->buffer_list)->next, capture_buffer, link);
 135                 if (first_entry->buffer != buffer)
 136                         TDM_ERR("buffer(%p) is skipped", first_entry->buffer);
 137         } else {
 138                 TDM_NEVER_GET_HERE();
 139         }
 140
 141         if ((capture_buffer = _tdm_capture_find_tbm_buffer(&private_capture->buffer_list, buffer))) {
 142                 LIST_DEL(&capture_buffer->link);
 143                 LIST_DELINIT(&capture_buffer->commit_link);
 144
 145                 _pthread_mutex_unlock(&private_display->lock);
 146                 if (private_capture->done_func)
 147                         private_capture->done_func(capture_buffer, buffer, private_capture->done_user_data);
 148                 tdm_buffer_unref_backend(buffer);
 149                 _pthread_mutex_lock(&private_display->lock);
 150
 151                 free(capture_buffer);
 152         }
 153 }
 154
 155 static void
 156 _tdm_capture_cb_done(tdm_capture *capture_module, tbm_surface_h buffer, void *user_data)
 157 {
 158         tdm_private_capture *private_capture = user_data;
 159         tdm_thread_cb_capture_done capture_done;
 160         tdm_error ret;
 161
 162         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 163
 164         memset(&capture_done, 0, sizeof capture_done);
 165         capture_done.base.type = TDM_THREAD_CB_CAPTURE_DONE;
 166         capture_done.base.length = sizeof capture_done;
 167         capture_done.base.object_stamp = private_capture->stamp;
 168         capture_done.base.data = NULL;
 169         capture_done.base.sync = 0;
 170         capture_done.buffer = buffer;
 171
 172         ret = tdm_thread_cb_call(private_capture, &capture_done.base);
 173         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 174 }
 175
 176 static void *
 177 _tdm_capture_find_object(tdm_private_display *private_display, double stamp)
 178 {
 179         tdm_private_module *private_module = NULL;
 180         tdm_private_capture *private_capture = NULL;
 181
 182         TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), NULL);
 183
 184         LIST_FOR_EACH_ENTRY(private_module, &private_display->module_list, link) {
 185                 LIST_FOR_EACH_ENTRY(private_capture, &private_module->capture_list, display_link) {
 186                         if (private_capture->stamp == stamp)
 187                                 return private_capture;
 188                 }
 189         }
 190
 191         return NULL;
 192 }
 193
 194 INTERN tdm_error
 195 tdm_capture_init(tdm_private_display *private_display)
 196 {
 197         tdm_thread_cb_set_find_func(TDM_THREAD_CB_CAPTURE_DONE, _tdm_capture_find_object);
 198
 199         return TDM_ERROR_NONE;
 200 }
 201
 202 INTERN tdm_private_capture *
 203 tdm_capture_create_output_internal(tdm_private_output *private_output,
 204                                                                    tdm_error *error)
 205 {
 206         tdm_private_display *private_display = private_output->private_display;
 207         tdm_private_module *private_module = private_output->private_module;
 208         tdm_func_output *func_output = &private_module->func_output;
 209         tdm_func_capture *func_capture = &private_module->func_capture;
 210         tdm_private_capture *private_capture = NULL;
 211         tdm_capture *capture_module = NULL;
 212         tdm_error ret = TDM_ERROR_NONE;
 213
 214         TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), NULL);
 215
 216         if (!(private_module->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE)) {
 217                 /* LCOV_EXCL_START */
 218                 TDM_ERR("backend(%s) no capture capability", private_module->module_data->name);
 219                 if (error)
 220                         *error = TDM_ERROR_NO_CAPABILITY;
 221                 return NULL;
 222                 /* LCOV_EXCL_STOP */
 223         }
 224
 225         if (!(private_module->caps_capture.capabilities & TDM_CAPTURE_CAPABILITY_OUTPUT)) {
 226                 /* LCOV_EXCL_START */
 227                 TDM_ERR("backend(%s) no output capture capability", private_module->module_data->name);
 228                 if (error)
 229                         *error = TDM_ERROR_NO_CAPABILITY;
 230                 return NULL;
 231                 /* LCOV_EXCL_STOP */
 232         }
 233
 234         capture_module = func_output->output_create_capture(
 235                                                   private_output->output_backend, &ret);
 236         if (ret != TDM_ERROR_NONE) {
 237                 /* LCOV_EXCL_START */
 238                 if (error)
 239                         *error = ret;
 240                 return NULL;
 241                 /* LCOV_EXCL_STOP */
 242         }
 243
 244         private_capture = calloc(1, sizeof(tdm_private_capture));
 245         if (!private_capture) {
 246                 /* LCOV_EXCL_START */
 247                 TDM_ERR("failed: alloc memory");
 248                 func_capture->capture_destroy(capture_module);
 249                 if (error)
 250                         *error = TDM_ERROR_OUT_OF_MEMORY;
 251                 return NULL;
 252                 /* LCOV_EXCL_STOP */
 253         }
 254
 255         ret = tdm_thread_cb_add(private_capture, TDM_THREAD_CB_CAPTURE_DONE, NULL, _tdm_capture_thread_cb_done, NULL);
 256         if (ret != TDM_ERROR_NONE) {
 257                 TDM_ERR("capture tdm_thread_cb_add failed");
 258                 func_capture->capture_destroy(capture_module);
 259                 free(private_capture);
 260                 if (error)
 261                         *error = ret;
 262                 return NULL;
 263         }
 264
 265         ret = func_capture->capture_set_done_handler(capture_module, _tdm_capture_cb_done, private_capture);
 266         if (ret != TDM_ERROR_NONE) {
 267                 /* LCOV_EXCL_START */
 268                 TDM_ERR("capture(%p) set capture_done_handler failed", private_capture);
 269                 func_capture->capture_destroy(capture_module);
 270                 free(private_capture);
 271                 if (error)
 272                         *error = ret;
 273                 return NULL;
 274                 /* LCOV_EXCL_STOP */
 275         }
 276
 277         private_capture->stamp = tdm_helper_get_time();
 278         while (_tdm_capture_find_object(private_display, private_capture->stamp))
 279                 private_capture->stamp++;
 280
 281         LIST_ADD(&private_capture->link, &private_output->capture_list);
 282         LIST_ADD(&private_capture->display_link, &private_module->capture_list);
 283
 284         private_capture->private_module = private_module;
 285
 286         private_capture->target = TDM_CAPTURE_TARGET_OUTPUT;
 287         private_capture->private_display = private_display;
 288         private_capture->private_output = private_output;
 289         private_capture->private_layer = NULL;
 290         private_capture->capture_module = capture_module;
 291         private_capture->owner_tid = syscall(SYS_gettid);
 292
 293         LIST_INITHEAD(&private_capture->pending_buffer_list);
 294         LIST_INITHEAD(&private_capture->buffer_list);
 295
 296         TDM_DBG("capture(%p) create", private_capture);
 297
 298         if (error)
 299                 *error = TDM_ERROR_NONE;
 300
 301         return private_capture;
 302 }
 303
 304 /* LCOV_EXCL_START */
 305 INTERN tdm_private_capture *
 306 tdm_capture_create_layer_internal(tdm_private_layer *private_layer,
 307                                                                   tdm_error *error)
 308 {
 309         tdm_private_output *private_output = private_layer->private_output;
 310         tdm_private_module *private_module = private_layer->private_module;
 311         tdm_private_display *private_display = private_output->private_display;
 312         tdm_func_layer *func_layer = &private_module->func_layer;
 313         tdm_func_capture *func_capture = &private_module->func_capture;
 314         tdm_private_capture *private_capture = NULL;
 315         tdm_capture *capture_module = NULL;
 316         tdm_error ret = TDM_ERROR_NONE;
 317
 318         TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), NULL);
 319
 320         if (!(private_module->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE)) {
 321                 TDM_ERR("backend(%s) no capture capability", private_module->module_data->name);
 322                 if (error)
 323                         *error = TDM_ERROR_NO_CAPABILITY;
 324                 return NULL;
 325         }
 326
 327         if (!(private_module->caps_capture.capabilities & TDM_CAPTURE_CAPABILITY_LAYER)) {
 328                 TDM_ERR("backend(%s) no layer capture capability", private_module->module_data->name);
 329                 if (error)
 330                         *error = TDM_ERROR_NO_CAPABILITY;
 331                 return NULL;
 332         }
 333
 334         capture_module = func_layer->layer_create_capture(private_layer->layer_backend,
 335                                           &ret);
 336         if (ret != TDM_ERROR_NONE)
 337                 return NULL;
 338
 339         private_capture = calloc(1, sizeof(tdm_private_capture));
 340         if (!private_capture) {
 341                 TDM_ERR("failed: alloc memory");
 342                 func_capture->capture_destroy(capture_module);
 343                 if (error)
 344                         *error = TDM_ERROR_OUT_OF_MEMORY;
 345                 return NULL;
 346         }
 347
 348         private_capture->stamp = tdm_helper_get_time();
 349         while (_tdm_capture_find_object(private_display, private_capture->stamp))
 350                 private_capture->stamp++;
 351
 352         LIST_ADD(&private_capture->link, &private_layer->capture_list);
 353         LIST_ADD(&private_capture->display_link, &private_module->capture_list);
 354
 355         private_capture->private_module = private_module;
 356
 357         private_capture->target = TDM_CAPTURE_TARGET_LAYER;
 358         private_capture->private_display = private_display;
 359         private_capture->private_output = private_output;
 360         private_capture->private_layer = private_layer;
 361         private_capture->capture_module = capture_module;
 362         private_capture->owner_tid = syscall(SYS_gettid);
 363
 364         LIST_INITHEAD(&private_capture->pending_buffer_list);
 365         LIST_INITHEAD(&private_capture->buffer_list);
 366
 367         TDM_DBG("capture(%p) create", private_capture);
 368
 369         if (error)
 370                 *error = TDM_ERROR_NONE;
 371
 372         return private_capture;
 373 }
 374 /* LCOV_EXCL_STOP */
 375
 376 INTERN void
 377 tdm_capture_destroy_internal(tdm_private_capture *private_capture)
 378 {
 379         tdm_private_display *private_display;
 380         tdm_private_module *private_module;
 381         tdm_func_capture *func_capture;
 382         tdm_capture_private_buffer *b = NULL, *bb = NULL;
 383         struct list_head clone_list;
 384
 385         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 386
 387         if (!private_capture)
 388                 return;
 389
 390         private_display = private_capture->private_display;
 391
 392         tdm_thread_cb_remove(private_capture, TDM_THREAD_CB_CAPTURE_DONE, NULL, _tdm_capture_thread_cb_done, NULL);
 393
 394         LIST_DEL(&private_capture->link);
 395         LIST_DEL(&private_capture->display_link);
 396
 397         private_module = private_capture->private_module;
 398         func_capture = &private_module->func_capture;
 399         func_capture->capture_destroy(private_capture->capture_module);
 400
 401         if (!LIST_IS_EMPTY(&private_capture->pending_buffer_list)) {
 402                 TDM_WRN("capture(%p) not finished:", private_capture);
 403                 _tdm_capture_print_list(&private_capture->pending_buffer_list);
 404
 405                 LIST_INITHEAD(&clone_list);
 406                 LIST_FOR_EACH_ENTRY_SAFE(b, bb, &private_capture->pending_buffer_list, link) {
 407                         LIST_DEL(&b->link);
 408                         LIST_ADDTAIL(&b->link, &clone_list);
 409                 }
 410
 411                 _pthread_mutex_unlock(&private_display->lock);
 412                 LIST_FOR_EACH_ENTRY_SAFE(b, bb, &clone_list, link) {
 413                         LIST_DEL(&b->link);
 414
 415                         if (tdm_ttrace_module & TDM_TTRACE_CAPTURE) {
 416                                 tbm_bo bo = tbm_surface_internal_get_bo(b->buffer, 0);
 417                                 TDM_TRACE_ASYNC_END((intptr_t)private_capture, "[CAPTURE] %d", tbm_bo_export(bo));
 418                         }
 419
 420                         tdm_buffer_unref_backend(b->buffer);
 421                         free(b);
 422                 }
 423                 _pthread_mutex_lock(&private_display->lock);
 424         }
 425
 426         if (!LIST_IS_EMPTY(&private_capture->buffer_list)) {
 427                 TDM_WRN("capture(%p) not finished:", private_capture);
 428                 _tdm_capture_print_list(&private_capture->buffer_list);
 429
 430                 LIST_INITHEAD(&clone_list);
 431                 LIST_FOR_EACH_ENTRY_SAFE(b, bb, &private_capture->buffer_list, link) {
 432                         LIST_DEL(&b->link);
 433                         LIST_ADDTAIL(&b->link, &clone_list);
 434                 }
 435
 436                 _pthread_mutex_unlock(&private_display->lock);
 437                 LIST_FOR_EACH_ENTRY_SAFE(b, bb, &clone_list, link) {
 438                         LIST_DEL(&b->link);
 439
 440                         if (tdm_ttrace_module & TDM_TTRACE_CAPTURE) {
 441                                 tbm_bo bo = tbm_surface_internal_get_bo(b->buffer, 0);
 442                                 TDM_TRACE_ASYNC_END((intptr_t)private_capture, "[CAPTURE] %d", tbm_bo_export(bo));
 443                         }
 444
 445                         tdm_buffer_unref_backend(b->buffer);
 446                         free(b);
 447                 }
 448                 _pthread_mutex_lock(&private_display->lock);
 449         }
 450
 451         private_capture->stamp = 0;
 452         free(private_capture);
 453 }
 454
 455 EXTERN void
 456 tdm_capture_destroy(tdm_capture *capture)
 457 {
 458         tdm_private_capture *private_capture = capture;
 459         tdm_private_display *private_display;
 460
 461         if (!private_capture)
 462                 return;
 463
 464         TDM_DBG("capture(%p) destroy", private_capture);
 465
 466         private_display = private_capture->private_display;
 467
 468         _pthread_mutex_lock(&private_display->lock);
 469         tdm_capture_destroy_internal(private_capture);
 470         _pthread_mutex_unlock(&private_display->lock);
 471 }
 472
 473 EXTERN tdm_error
 474 tdm_capture_set_info(tdm_capture *capture, tdm_info_capture *info)
 475 {
 476         CAPTURE_FUNC_ENTRY();
 477
 478         TDM_RETURN_VAL_IF_FAIL(info != NULL, TDM_ERROR_INVALID_PARAMETER);
 479         TDM_RETURN_VAL_IF_FAIL(info->type != 0, TDM_ERROR_INVALID_PARAMETER);
 480
 481         _pthread_mutex_lock(&private_display->lock);
 482
 483         if (!func_capture->capture_set_info) {
 484                 /* LCOV_EXCL_START */
 485                 _pthread_mutex_unlock(&private_display->lock);
 486                 TDM_DBG("failed: not implemented!!");
 487                 return TDM_ERROR_NOT_IMPLEMENTED;
 488                 /* LCOV_EXCL_STOP */
 489         }
 490
 491         if (info->type == TDM_CAPTURE_TYPE_STREAM && info->frequency == 0) {
 492                 tdm_private_output *private_output = private_capture->private_output;
 493                 info->frequency = private_output->current_mode->vrefresh;
 494         }
 495
 496         TDM_INFO("capture(%p) info: dst(%ux%u %u,%u %ux%u %c%c%c%c) trans(%d) type(%d) freq(%d) flags(%x)",
 497                          private_capture,
 498                          info->dst_config.size.h, info->dst_config.size.v,
 499                          info->dst_config.pos.x, info->dst_config.pos.y,
 500                          info->dst_config.pos.w, info->dst_config.pos.h,
 501                          FOURCC_STR(info->dst_config.format),
 502                          info->transform, info->type, info->frequency, info->flags);
 503
 504         ret = func_capture->capture_set_info(private_capture->capture_module, info);
 505         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 506
 507         private_capture->info = *info;
 508
 509         _pthread_mutex_unlock(&private_display->lock);
 510
 511         return ret;
 512 }
 513
 514 EXTERN tdm_error
 515 tdm_capture_set_done_handler(tdm_capture *capture, tdm_capture_done_handler func, void *user_data)
 516 {
 517         tdm_private_display *private_display;
 518         tdm_private_capture *private_capture;
 519         tdm_error ret = TDM_ERROR_NONE;
 520
 521         TDM_RETURN_VAL_IF_FAIL(capture != NULL, TDM_ERROR_INVALID_PARAMETER);
 522
 523         private_capture = (tdm_private_capture*)capture;
 524         private_display = private_capture->private_display;
 525
 526         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
 527
 528         _pthread_mutex_lock(&private_display->lock);
 529
 530         private_capture->done_func = func;
 531         private_capture->done_user_data = user_data;
 532
 533         _pthread_mutex_unlock(&private_display->lock);
 534
 535         return ret;
 536 }
 537
 538 EXTERN tdm_error
 539 tdm_capture_attach(tdm_capture *capture, tbm_surface_h buffer)
 540 {
 541         tdm_capture_private_buffer *capture_buffer;
 542
 543         CAPTURE_FUNC_ENTRY();
 544
 545         TDM_RETURN_VAL_IF_FAIL(buffer != NULL, TDM_ERROR_INVALID_PARAMETER);
 546
 547         _pthread_mutex_lock(&private_display->lock);
 548
 549         if (!func_capture->capture_attach) {
 550                 /* LCOV_EXCL_START */
 551                 _pthread_mutex_unlock(&private_display->lock);
 552                 TDM_DBG("failed: not implemented!!");
 553                 return TDM_ERROR_NOT_IMPLEMENTED;
 554                 /* LCOV_EXCL_STOP */
 555         }
 556
 557         if (tdm_module_check_abi(private_module, 1, 2) &&
 558                 private_module->caps_capture.max_attach_count > 0) {
 559                 /* LCOV_EXCL_START */
 560                 int length = LIST_LENGTH(&private_capture->pending_buffer_list) +
 561                                          LIST_LENGTH(&private_capture->buffer_list);
 562                 if (length >= private_module->caps_capture.max_attach_count) {
 563                         _pthread_mutex_unlock(&private_display->lock);
 564                         TDM_DBG("failed: backend(%s) too many attached!! max_attach_count(%d)",
 565                                         private_module->module_data->name, private_module->caps_capture.max_attach_count);
 566                         return TDM_ERROR_BAD_REQUEST;
 567                 }
 568                 /* LCOV_EXCL_STOP */
 569         }
 570
 571         capture_buffer = calloc(1, sizeof * capture_buffer);
 572         if (!capture_buffer) {
 573                 /* LCOV_EXCL_START */
 574                 _pthread_mutex_unlock(&private_display->lock);
 575                 TDM_ERR("alloc failed");
 576                 return TDM_ERROR_OUT_OF_MEMORY;
 577                 /* LCOV_EXCL_STOP */
 578         }
 579
 580         ret = func_capture->capture_attach(private_capture->capture_module, buffer);
 581         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 582
 583         if (ret != TDM_ERROR_NONE) {
 584                 /* LCOV_EXCL_START */
 585                 free(capture_buffer);
 586                 _pthread_mutex_unlock(&private_display->lock);
 587                 TDM_ERR("attach failed");
 588                 return ret;
 589                 /* LCOV_EXCL_STOP */
 590         }
 591
 592         LIST_ADDTAIL(&capture_buffer->link, &private_capture->pending_buffer_list);
 593         capture_buffer->buffer = tdm_buffer_ref_backend(buffer);
 594
 595         if (tdm_debug_module & TDM_DEBUG_BUFFER) {
 596                 TDM_INFO("capture(%p) attached:", private_capture);
 597                 _tdm_capture_print_list(&private_capture->buffer_list);
 598         }
 599
 600         if (tdm_ttrace_module & TDM_TTRACE_CAPTURE) {
 601                 tbm_bo bo = tbm_surface_internal_get_bo(buffer, 0);
 602                 TDM_TRACE_ASYNC_BEGIN((intptr_t)capture, "[CAPTURE] %d", tbm_bo_export(bo));
 603         }
 604
 605         _pthread_mutex_unlock(&private_display->lock);
 606
 607         return ret;
 608 }
 609
 610 EXTERN tdm_error
 611 tdm_capture_commit(tdm_capture *capture)
 612 {
 613         tdm_capture_private_buffer *b = NULL, *bb = NULL;
 614         tdm_private_output *private_output;
 615         struct list_head commit_buffer_list;
 616
 617         CAPTURE_FUNC_ENTRY();
 618
 619         _pthread_mutex_lock(&private_display->lock);
 620
 621         private_output = private_capture->private_output;
 622
 623         /* TODO: possible when standby mode? can't decide it yet. no scenario. */
 624         if (TDM_OUTPUT_DPMS_VSYNC_IS_OFF(private_output->current_dpms_value)) {
 625                 TDM_ERR("output(%d) dpms: %s", private_output->pipe,
 626                                 tdm_dpms_str(private_output->current_dpms_value));
 627                 _pthread_mutex_unlock(&private_display->lock);
 628                 return TDM_ERROR_BAD_REQUEST;
 629         }
 630
 631         if (!func_capture->capture_commit) {
 632                 /* LCOV_EXCL_START */
 633                 _pthread_mutex_unlock(&private_display->lock);
 634                 TDM_DBG("failed: not implemented!!");
 635                 return TDM_ERROR_NOT_IMPLEMENTED;
 636                 /* LCOV_EXCL_STOP */
 637         }
 638
 639         LIST_INITHEAD(&commit_buffer_list);
 640
 641         LIST_FOR_EACH_ENTRY_SAFE(b, bb, &private_capture->pending_buffer_list, link) {
 642                 LIST_DEL(&b->link);
 643                 LIST_ADDTAIL(&b->link, &private_capture->buffer_list);
 644                 LIST_ADDTAIL(&b->commit_link, &commit_buffer_list);
 645         }
 646
 647         ret = func_capture->capture_commit(private_capture->capture_module);
 648         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 649
 650         LIST_FOR_EACH_ENTRY_SAFE(b, bb, &commit_buffer_list, commit_link) {
 651                 LIST_DELINIT(&b->commit_link);
 652
 653                 if (!_tdm_capture_find_buffer(&private_capture->buffer_list, b))
 654                         continue;
 655
 656                 if (ret != TDM_ERROR_NONE) {
 657                         /* LCOV_EXCL_START */
 658                         /* Not to call the user release handler when failed.
 659                          * Do we have to call this function here really?
 660                          * User better use set_done_handler to know when pp is done. Using
 661                          * buffer_release_handler is not good.
 662                          */
 663                         tdm_buffer_remove_release_handler_internal(b->buffer);
 664
 665                         _pthread_mutex_unlock(&private_display->lock);
 666                         tdm_buffer_unref_backend(b->buffer);
 667                         _pthread_mutex_lock(&private_display->lock);
 668                         LIST_DEL(&b->link);
 669
 670                         free(b);
 671                         /* LCOV_EXCL_STOP */
 672                 }
 673         }
 674
 675         _pthread_mutex_unlock(&private_display->lock);
 676
 677         return ret;
 678 }