src/mm_camcorder_resource.c

   1 /*
   2  * libmm-camcorder
   3  *
   4  * Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd. All rights reserved.
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  * http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *
  18  */
  19
  20 #include "mm_camcorder_internal.h"
  21 #include "mm_camcorder_resource.h"
  22 #include <murphy/common/glib-glue.h>
  23
  24 #define MRP_APP_CLASS_FOR_CAMCORDER   "media"
  25 #define MRP_RESOURCE_TYPE_MANDATORY TRUE
  26 #define MRP_RESOURCE_TYPE_EXCLUSIVE FALSE
  27
  28 const char* mm_camcorder_resource_str[MM_CAMCORDER_RESOURCE_MAX] = {
  29         "camera",
  30         "video_overlay"
  31 };
  32
  33 #define MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(x_camcorder_resource_manager) \
  34 do { \
  35         if (!x_camcorder_resource_manager) { \
  36                 _mmcam_dbg_err("no resource manager instance"); \
  37                 return MM_ERROR_INVALID_ARGUMENT; \
  38         } \
  39 } while (0);
  40
  41 #define MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(x_camcorder_resource_manager) \
  42 do { \
  43         if (!x_camcorder_resource_manager) { \
  44                 _mmcam_dbg_err("no resource manager instance"); \
  45                 return MM_ERROR_INVALID_ARGUMENT; \
  46         } else { \
  47                 if (!x_camcorder_resource_manager->is_connected) { \
  48                         _mmcam_dbg_err("not connected to resource server yet"); \
  49                         return MM_ERROR_RESOURCE_NOT_INITIALIZED; \
  50                 } \
  51         } \
  52 } while (0);
  53
  54 static char *__mmcamcorder_resource_state_to_str(mrp_res_resource_state_t st)
  55 {
  56         char *state = "unknown";
  57         switch (st) {
  58         case MRP_RES_RESOURCE_ACQUIRED:
  59                 state = "acquired";
  60                 break;
  61         case MRP_RES_RESOURCE_LOST:
  62                 state = "lost";
  63                 break;
  64         case MRP_RES_RESOURCE_AVAILABLE:
  65                 state = "available";
  66                 break;
  67         case MRP_RES_RESOURCE_PENDING:
  68                 state = "pending";
  69                 break;
  70         case MRP_RES_RESOURCE_ABOUT_TO_LOOSE:
  71                 state = "about to loose";
  72                 break;
  73         }
  74         return state;
  75 }
  76
  77 static void __mmcamcorder_resource_state_callback(mrp_res_context_t *context, mrp_res_error_t err, void *user_data)
  78 {
  79         int i = 0;
  80         const mrp_res_resource_set_t *rset;
  81         mrp_res_resource_t *resource;
  82         mmf_camcorder_t* camcorder = NULL;
  83
  84         camcorder = (mmf_camcorder_t*)user_data;
  85
  86         mmf_return_if_fail((MMHandleType)camcorder);
  87         mmf_return_if_fail(context);
  88
  89         _mmcam_dbg_warn("enter - state %d", context->state);
  90
  91         _MMCAMCORDER_LOCK_RESOURCE(camcorder);
  92
  93         switch (context->state) {
  94         case MRP_RES_CONNECTED:
  95                 _mmcam_dbg_warn(" - connected to Murphy");
  96                 if ((rset = mrp_res_list_resources(context)) != NULL) {
  97                         mrp_res_string_array_t *resource_names;
  98                         resource_names = mrp_res_list_resource_names(rset);
  99                         if (!resource_names) {
 100                                 _mmcam_dbg_err(" - no resources available");
 101                                 _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 102                                 return;
 103                         }
 104                         for (i = 0; i < resource_names->num_strings; i++) {
 105                                 resource = mrp_res_get_resource_by_name(rset, resource_names->strings[i]);
 106                                 if (resource)
 107                                         _mmcam_dbg_warn(" - available resource: %s", resource->name);
 108                         }
 109                         mrp_res_free_string_array(resource_names);
 110                 }
 111                 camcorder->resource_manager.is_connected = TRUE;
 112                 _MMCAMCORDER_RESOURCE_SIGNAL(camcorder);
 113                 break;
 114         case MRP_RES_DISCONNECTED:
 115                 _mmcam_dbg_err(" - disconnected from Murphy : stop camera");
 116
 117                 if (camcorder->resource_manager.rset) {
 118                         mrp_res_delete_resource_set(camcorder->resource_manager.rset);
 119                         camcorder->resource_manager.rset = NULL;
 120                 }
 121
 122                 if (camcorder->resource_manager.context) {
 123                         mrp_res_destroy(camcorder->resource_manager.context);
 124                         camcorder->resource_manager.context = NULL;
 125                         camcorder->resource_manager.is_connected = FALSE;
 126                 }
 127
 128                 _MMCAMCORDER_LOCK_ASM(camcorder);
 129
 130                 /* set value to inform a status is changed by resource manaer */
 131                 camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_BY_RM;
 132
 133                 /* Stop the camera */
 134                 __mmcamcorder_force_stop(camcorder);
 135
 136                 /* restore value */
 137                 camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_NORMAL;
 138
 139                 _MMCAMCORDER_UNLOCK_ASM(camcorder);
 140                 break;
 141         }
 142
 143         _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 144
 145         _mmcam_dbg_warn("leave");
 146
 147         return;
 148 }
 149
 150
 151 static void __mmcamcorder_resource_set_state_callback(mrp_res_context_t *cx, const mrp_res_resource_set_t *rs, void *user_data)
 152 {
 153         int i = 0;
 154         mmf_camcorder_t *camcorder = (mmf_camcorder_t *)user_data;
 155         mrp_res_resource_t *res;
 156
 157         mmf_return_if_fail((MMHandleType)camcorder);
 158
 159         _MMCAMCORDER_LOCK_RESOURCE(camcorder);
 160
 161         if (!mrp_res_equal_resource_set(rs, camcorder->resource_manager.rset)) {
 162                 _mmcam_dbg_warn("- resource set(%p) is not same as this camcorder handle's(%p)", rs, camcorder->resource_manager.rset);
 163                 _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 164                 return;
 165         }
 166
 167         _mmcam_dbg_log(" - resource set state of camcorder(%p) is changed to [%s]",
 168                 camcorder, __mmcamcorder_resource_state_to_str(rs->state));
 169
 170         for (i = 0; i < MM_CAMCORDER_RESOURCE_MAX; i++) {
 171                 res = mrp_res_get_resource_by_name(rs, mm_camcorder_resource_str[i]);
 172                 if (res == NULL) {
 173                         _mmcam_dbg_warn(" -- %s not present in resource set", mm_camcorder_resource_str[i]);
 174                 } else {
 175                         _mmcam_dbg_warn(" -- resource name [%s] -> [%s]",
 176                                 res->name, __mmcamcorder_resource_state_to_str(res->state));
 177
 178                         if (res->state == MRP_RES_RESOURCE_ACQUIRED) {
 179                                 camcorder->resource_manager.acquire_remain--;
 180
 181                                 if (camcorder->resource_manager.acquire_remain <= 0) {
 182                                         _mmcam_dbg_warn("send signal - resource acquire done");
 183                                         _MMCAMCORDER_RESOURCE_SIGNAL(camcorder);
 184                                 } else {
 185                                         _mmcam_dbg_warn("remained acquire count %d",
 186                                                 camcorder->resource_manager.acquire_remain);
 187                                 }
 188                         } else if (res->state == MRP_RES_RESOURCE_LOST) {
 189                                 camcorder->resource_manager.acquire_remain++;
 190
 191                                 if (camcorder->resource_manager.acquire_remain >= camcorder->resource_manager.acquire_count) {
 192                                         _mmcam_dbg_warn("resource release done");
 193
 194                                         if (camcorder->state > MM_CAMCORDER_STATE_NULL) {
 195                                                 _mmcam_dbg_warn("send resource signal");
 196                                                 _MMCAMCORDER_RESOURCE_SIGNAL(camcorder);
 197                                         } else {
 198                                                 _mmcam_dbg_warn("skip resource signal - state %d", camcorder->state);
 199                                         }
 200                                 } else {
 201                                         _mmcam_dbg_warn("acquired %d, lost %d",
 202                                                 camcorder->resource_manager.acquire_count,
 203                                                 camcorder->resource_manager.acquire_remain);
 204                                 }
 205                         }
 206                 }
 207         }
 208
 209         mrp_res_delete_resource_set(camcorder->resource_manager.rset);
 210         camcorder->resource_manager.rset = mrp_res_copy_resource_set(rs);
 211
 212         _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 213
 214         return;
 215 }
 216
 217
 218 static void __mmcamcorder_resource_release_cb(mrp_res_context_t *cx, const mrp_res_resource_set_t *rs, void *user_data)
 219 {
 220         int i = 0;
 221         int current_state = MM_CAMCORDER_STATE_NONE;
 222         mmf_camcorder_t* camcorder = (mmf_camcorder_t*)user_data;
 223         mrp_res_resource_t *res;
 224
 225         mmf_return_if_fail((MMHandleType)camcorder);
 226
 227         current_state = _mmcamcorder_get_state((MMHandleType)camcorder);
 228         if (current_state <= MM_CAMCORDER_STATE_NONE ||
 229             current_state >= MM_CAMCORDER_STATE_NUM) {
 230                 _mmcam_dbg_err("Abnormal state. Or null handle. (%p, %d)", camcorder, current_state);
 231                 return;
 232         }
 233
 234         _MMCAMCORDER_LOCK_ASM(camcorder);
 235
 236         /* set value to inform a status is changed by resource manaer */
 237         camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_BY_RM;
 238
 239         if (!mrp_res_equal_resource_set(rs, camcorder->resource_manager.rset)) {
 240                 _MMCAMCORDER_UNLOCK_ASM(camcorder);
 241                 _mmcam_dbg_warn("- resource set(%p) is not same as this camcorder handle's(%p)", rs, camcorder->resource_manager.rset);
 242                 return;
 243         }
 244
 245         _mmcam_dbg_log(" - resource set state of camcorder(%p) is changed to [%s]",
 246                 camcorder, __mmcamcorder_resource_state_to_str(rs->state));
 247
 248         for (i = 0; i < MM_CAMCORDER_RESOURCE_MAX; i++) {
 249                 res = mrp_res_get_resource_by_name(rs, mm_camcorder_resource_str[i]);
 250                 if (res == NULL) {
 251                         _mmcam_dbg_warn(" -- %s not present in resource set", mm_camcorder_resource_str[i]);
 252                 } else {
 253                         _mmcam_dbg_warn(" -- resource name [%s] -> [%s]", res->name, __mmcamcorder_resource_state_to_str(res->state));
 254                 }
 255         }
 256
 257         /* Stop the camera */
 258         __mmcamcorder_force_stop(camcorder);
 259
 260         /* restore value */
 261         camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_NORMAL;
 262
 263         _MMCAMCORDER_UNLOCK_ASM(camcorder);
 264
 265         return;
 266 }
 267
 268 int _mmcamcorder_resource_create_resource_set(MMCamcorderResourceManager *resource_manager)
 269 {
 270         if (resource_manager->rset) {
 271                 _mmcam_dbg_warn(" - resource set was already created, delete it");
 272                 mrp_res_delete_resource_set(resource_manager->rset);
 273                 resource_manager->rset = NULL;
 274         }
 275
 276         resource_manager->rset = mrp_res_create_resource_set(resource_manager->context,
 277                 MRP_APP_CLASS_FOR_CAMCORDER, __mmcamcorder_resource_set_state_callback, (void*)resource_manager->user_data);
 278
 279         if (resource_manager->rset == NULL) {
 280                 _mmcam_dbg_err(" - could not create resource set");
 281                 return MM_ERROR_RESOURCE_INTERNAL;
 282         }
 283
 284         if (!mrp_res_set_autorelease(TRUE, resource_manager->rset))
 285                 _mmcam_dbg_warn(" - could not set autorelease flag!");
 286
 287         _mmcam_dbg_log("done");
 288
 289         return MM_ERROR_NONE;
 290 }
 291
 292 static int __mmcamcorder_resource_include_resource(MMCamcorderResourceManager *resource_manager, const char *resource_name)
 293 {
 294         mrp_res_resource_t *resource = NULL;
 295         resource = mrp_res_create_resource(resource_manager->rset,
 296                 resource_name,
 297                 MRP_RESOURCE_TYPE_MANDATORY,
 298                 MRP_RESOURCE_TYPE_EXCLUSIVE);
 299         if (resource == NULL) {
 300                 _mmcam_dbg_err(" - could not include resource[%s]", resource_name);
 301                 return MM_ERROR_RESOURCE_INTERNAL;
 302         }
 303
 304         resource_manager->acquire_count++;
 305         resource_manager->acquire_remain = resource_manager->acquire_count;
 306
 307         _mmcam_dbg_log(" - count[%d] include resource[%s]",
 308                 resource_manager->acquire_count, resource_name);
 309
 310         return MM_ERROR_NONE;
 311 }
 312
 313 static int __mmcamcorder_resource_set_release_cb(MMCamcorderResourceManager *resource_manager)
 314 {
 315         int ret = MM_ERROR_NONE;
 316         bool mrp_ret = FALSE;
 317
 318         if (resource_manager->rset) {
 319                 mrp_ret = mrp_res_set_release_callback(resource_manager->rset, __mmcamcorder_resource_release_cb, resource_manager->user_data);
 320                 if (!mrp_ret) {
 321                         _mmcam_dbg_err(" - could not set release callback");
 322                         ret = MM_ERROR_RESOURCE_INTERNAL;
 323                 }
 324         } else {
 325                 _mmcam_dbg_err(" - resource set is null");
 326                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 327         }
 328
 329         return ret;
 330 }
 331
 332 int _mmcamcorder_resource_manager_init(MMCamcorderResourceManager *resource_manager, void *user_data)
 333 {
 334         GMainContext *mrp_ctx = NULL;
 335         GMainLoop *mrp_loop = NULL;
 336
 337         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 338
 339         _mmcam_dbg_warn("start");
 340
 341         mrp_ctx = g_main_context_new();
 342         if (!mrp_ctx) {
 343                 _mmcam_dbg_err("failed to get create glib context for mrp");
 344                 return MM_ERROR_RESOURCE_INTERNAL;
 345         }
 346
 347         mrp_loop = g_main_loop_new(mrp_ctx, TRUE);
 348
 349         g_main_context_unref(mrp_ctx);
 350         mrp_ctx = NULL;
 351
 352         if (!mrp_loop) {
 353                 _mmcam_dbg_err("failed to get create glib loop for mrp");
 354                 return MM_ERROR_RESOURCE_INTERNAL;
 355         }
 356
 357         resource_manager->mloop = mrp_mainloop_glib_get(mrp_loop);
 358
 359         g_main_loop_unref(mrp_loop);
 360         mrp_loop = NULL;
 361
 362         if (!resource_manager->mloop) {
 363                 _mmcam_dbg_err("failed to get mainloop for mrp");
 364                 return MM_ERROR_RESOURCE_INTERNAL;
 365         }
 366
 367         _mmcam_dbg_warn("mloop %p", resource_manager->mloop);
 368
 369         resource_manager->context = mrp_res_create(resource_manager->mloop, __mmcamcorder_resource_state_callback, user_data);
 370         if (!resource_manager->context) {
 371                 _mmcam_dbg_err("could not get context for mrp");
 372
 373                 mrp_mainloop_destroy(resource_manager->mloop);
 374                 resource_manager->mloop = NULL;
 375
 376                 return MM_ERROR_RESOURCE_INTERNAL;
 377         }
 378
 379         resource_manager->user_data = user_data;
 380
 381         _mmcam_dbg_log("done");
 382
 383         return MM_ERROR_NONE;
 384 }
 385
 386 int _mmcamcorder_resource_manager_prepare(MMCamcorderResourceManager *resource_manager, MMCamcorderResourceType resource_type)
 387 {
 388         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 389         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 390
 391         return __mmcamcorder_resource_include_resource(resource_manager, mm_camcorder_resource_str[resource_type]);
 392 }
 393
 394 int _mmcamcorder_resource_manager_acquire(MMCamcorderResourceManager *resource_manager)
 395 {
 396         int ret = MM_ERROR_NONE;
 397         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 398         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 399
 400         if (resource_manager->rset == NULL) {
 401                 _mmcam_dbg_err("- could not acquire resource, resource set is null");
 402                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 403         } else {
 404                 ret = __mmcamcorder_resource_set_release_cb(resource_manager);
 405                 if (ret) {
 406                         _mmcam_dbg_err("- could not set resource release cb, ret(%d)", ret);
 407                         ret = MM_ERROR_RESOURCE_INTERNAL;
 408                 } else {
 409                         ret = mrp_res_acquire_resource_set(resource_manager->rset);
 410                         if (ret) {
 411                                 _mmcam_dbg_err("- could not acquire resource, ret(%d)", ret);
 412                                 ret = MM_ERROR_RESOURCE_INTERNAL;
 413                         }
 414                 }
 415         }
 416
 417         return ret;
 418 }
 419
 420 int _mmcamcorder_resource_manager_release(MMCamcorderResourceManager *resource_manager)
 421 {
 422         int ret = MM_ERROR_NONE;
 423         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 424         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 425
 426         if (resource_manager->rset == NULL) {
 427                 _mmcam_dbg_err("- could not release resource, resource set is null");
 428                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 429         } else {
 430                 if (resource_manager->rset->state != MRP_RES_RESOURCE_ACQUIRED) {
 431                         _mmcam_dbg_err("- could not release resource, resource set state is [%s]",
 432                                 __mmcamcorder_resource_state_to_str(resource_manager->rset->state));
 433                         ret = MM_ERROR_RESOURCE_INVALID_STATE;
 434                 } else {
 435                         ret = mrp_res_release_resource_set(resource_manager->rset);
 436                         if (ret) {
 437                                 _mmcam_dbg_err("- could not release resource, ret(%d)", ret);
 438                                 ret = MM_ERROR_RESOURCE_INTERNAL;
 439                         } else {
 440                                 _mmcam_dbg_log("resource release done");
 441                         }
 442                 }
 443         }
 444
 445         return ret;
 446 }
 447
 448
 449 int _mmcamcorder_resource_manager_deinit(MMCamcorderResourceManager *resource_manager)
 450 {
 451         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 452
 453         _mmcam_dbg_warn("rset %p, context %p, mloop %p",
 454                 resource_manager->rset, resource_manager->context, resource_manager->mloop);
 455
 456         if (resource_manager->rset) {
 457                 if (resource_manager->rset->state == MRP_RES_RESOURCE_ACQUIRED) {
 458                         _mmcam_dbg_warn("resource is still acquired. release...");
 459                         if (mrp_res_release_resource_set(resource_manager->rset))
 460                                 _mmcam_dbg_err("- could not release resource");
 461                 }
 462
 463                 _mmcam_dbg_warn("delete resource set");
 464
 465                 mrp_res_delete_resource_set(resource_manager->rset);
 466                 resource_manager->rset = NULL;
 467         }
 468
 469         if (resource_manager->context) {
 470                 _mmcam_dbg_warn("destroy resource context");
 471
 472                 mrp_res_destroy(resource_manager->context);
 473                 resource_manager->context = NULL;
 474         }
 475
 476         if (resource_manager->mloop) {
 477                 _mmcam_dbg_warn("destroy resource mainloop");
 478
 479                 mrp_mainloop_quit(resource_manager->mloop, 0);
 480                 mrp_mainloop_destroy(resource_manager->mloop);
 481                 resource_manager->mloop = NULL;
 482         }
 483
 484         _mmcam_dbg_warn("done");
 485
 486         return MM_ERROR_NONE;
 487 }