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         if (err != MRP_RES_ERROR_NONE) {
  85                 _mmcam_dbg_err(" - error message received from Murphy, err(0x%x)", err);
  86                 return;
  87         }
  88
  89         camcorder = (mmf_camcorder_t*)user_data;
  90
  91         mmf_return_if_fail((MMHandleType)camcorder);
  92
  93         _mmcam_dbg_log("enter");
  94
  95         _MMCAMCORDER_LOCK_RESOURCE(camcorder);
  96
  97         switch (context->state) {
  98         case MRP_RES_CONNECTED:
  99                 _mmcam_dbg_log(" - connected to Murphy");
 100                 if ((rset = mrp_res_list_resources(context)) != NULL) {
 101                         mrp_res_string_array_t *resource_names;
 102                         resource_names = mrp_res_list_resource_names(rset);
 103                         if (!resource_names) {
 104                                 _mmcam_dbg_err(" - no resources available");
 105                                 _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 106                                 return;
 107                         }
 108                         for (i = 0; i < resource_names->num_strings; i++) {
 109                                 resource = mrp_res_get_resource_by_name(rset, resource_names->strings[i]);
 110                                 if (resource) {
 111                                         _mmcam_dbg_log(" - available resource: %s", resource->name);
 112                                 }
 113                         }
 114                         mrp_res_free_string_array(resource_names);
 115                 }
 116                 camcorder->resource_manager.is_connected = TRUE;
 117                 _MMCAMCORDER_RESOURCE_SIGNAL(camcorder);
 118                 break;
 119         case MRP_RES_DISCONNECTED:
 120                 _mmcam_dbg_log(" - disconnected from Murphy");
 121                 if (camcorder->resource_manager.rset) {
 122                         mrp_res_delete_resource_set(camcorder->resource_manager.rset);
 123                         camcorder->resource_manager.rset = NULL;
 124                 }
 125                 if (camcorder->resource_manager.context) {
 126                         mrp_res_destroy(camcorder->resource_manager.context);
 127                         camcorder->resource_manager.context = NULL;
 128                         camcorder->resource_manager.is_connected = FALSE;
 129                 }
 130                 break;
 131         }
 132
 133         _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 134
 135         _mmcam_dbg_log("leave");
 136
 137         return;
 138 }
 139
 140
 141 static void __mmcamcorder_resource_set_state_callback(mrp_res_context_t *cx, const mrp_res_resource_set_t *rs, void *user_data)
 142 {
 143         int i = 0;
 144         mmf_camcorder_t *camcorder = (mmf_camcorder_t *)user_data;
 145         mrp_res_resource_t *res;
 146
 147         mmf_return_if_fail((MMHandleType)camcorder);
 148
 149         _MMCAMCORDER_LOCK_RESOURCE(camcorder);
 150
 151         if (!mrp_res_equal_resource_set(rs, camcorder->resource_manager.rset)) {
 152                 _mmcam_dbg_warn("- resource set(%p) is not same as this camcorder handle's(%p)", rs, camcorder->resource_manager.rset);
 153                 _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 154                 return;
 155         }
 156
 157         _mmcam_dbg_log(" - resource set state of camcorder(%p) is changed to [%s]",
 158                 camcorder, __mmcamcorder_resource_state_to_str(rs->state));
 159
 160         for (i = 0; i < MM_CAMCORDER_RESOURCE_MAX; i++) {
 161                 res = mrp_res_get_resource_by_name(rs, mm_camcorder_resource_str[i]);
 162                 if (res == NULL) {
 163                         _mmcam_dbg_warn(" -- %s not present in resource set", mm_camcorder_resource_str[i]);
 164                 } else {
 165                         _mmcam_dbg_log(" -- resource name [%s] -> [%s]",
 166                                 res->name, __mmcamcorder_resource_state_to_str(res->state));
 167
 168                         if (res->state == MRP_RES_RESOURCE_ACQUIRED) {
 169                                 camcorder->resource_manager.acquire_count--;
 170
 171                                 if (camcorder->resource_manager.acquire_count <= 0) {
 172                                         _mmcam_dbg_log("send signal - resource acquire done");
 173                                         _MMCAMCORDER_RESOURCE_SIGNAL(camcorder);
 174                                 } else {
 175                                         _mmcam_dbg_warn("remained acquire count %d",
 176                                                 camcorder->resource_manager.acquire_count);
 177                                 }
 178                         }
 179                 }
 180         }
 181
 182         mrp_res_delete_resource_set(camcorder->resource_manager.rset);
 183         camcorder->resource_manager.rset = mrp_res_copy_resource_set(rs);
 184
 185         _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 186
 187         return;
 188 }
 189
 190
 191 static void __mmcamcorder_resource_release_cb(mrp_res_context_t *cx, const mrp_res_resource_set_t *rs, void *user_data)
 192 {
 193         int i = 0;
 194         int current_state = MM_CAMCORDER_STATE_NONE;
 195         mmf_camcorder_t* camcorder = (mmf_camcorder_t*)user_data;
 196         mrp_res_resource_t *res;
 197
 198         mmf_return_if_fail((MMHandleType)camcorder);
 199
 200         current_state = _mmcamcorder_get_state((MMHandleType)camcorder);
 201         if (current_state <= MM_CAMCORDER_STATE_NONE ||
 202             current_state >= MM_CAMCORDER_STATE_NUM) {
 203                 _mmcam_dbg_err("Abnormal state. Or null handle. (%p, %d)", camcorder, current_state);
 204                 return;
 205         }
 206
 207         /* set value to inform a status is changed by resource manaer */
 208         camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_BY_RM;
 209
 210         _MMCAMCORDER_LOCK_ASM(camcorder);
 211
 212         if (!mrp_res_equal_resource_set(rs, camcorder->resource_manager.rset)) {
 213                 _MMCAMCORDER_UNLOCK_ASM(camcorder);
 214                 _mmcam_dbg_warn("- resource set(%p) is not same as this camcorder handle's(%p)", rs, camcorder->resource_manager.rset);
 215                 return;
 216         }
 217
 218         _mmcam_dbg_log(" - resource set state of camcorder(%p) is changed to [%s]",
 219                 camcorder, __mmcamcorder_resource_state_to_str(rs->state));
 220
 221         for (i = 0; i < MM_CAMCORDER_RESOURCE_MAX; i++) {
 222                 res = mrp_res_get_resource_by_name(rs, mm_camcorder_resource_str[i]);
 223                 if (res == NULL) {
 224                         _mmcam_dbg_warn(" -- %s not present in resource set", mm_camcorder_resource_str[i]);
 225                 } else {
 226                         _mmcam_dbg_log(" -- resource name [%s] -> [%s]",
 227                                 res->name, __mmcamcorder_resource_state_to_str(res->state));
 228                 }
 229         }
 230
 231         /* Stop the camera */
 232         __mmcamcorder_force_stop(camcorder);
 233
 234         /* restore value */
 235         camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_NORMAL;
 236
 237         _MMCAMCORDER_UNLOCK_ASM(camcorder);
 238
 239         return;
 240 }
 241
 242 static int __mmcamcorder_resource_create_resource_set(MMCamcorderResourceManager *resource_manager)
 243 {
 244         if (resource_manager->rset) {
 245                 _mmcam_dbg_err(" - resource set was already created");
 246                 return MM_ERROR_RESOURCE_INVALID_STATE;
 247         }
 248
 249         resource_manager->rset = mrp_res_create_resource_set(resource_manager->context,
 250                 MRP_APP_CLASS_FOR_CAMCORDER, __mmcamcorder_resource_set_state_callback, (void*)resource_manager->user_data);
 251
 252         if (resource_manager->rset == NULL) {
 253                 _mmcam_dbg_err(" - could not create resource set");
 254                 return MM_ERROR_RESOURCE_INTERNAL;
 255         }
 256
 257         if (!mrp_res_set_autorelease(TRUE, resource_manager->rset)) {
 258                 _mmcam_dbg_warn(" - could not set autorelease flag!");
 259         }
 260
 261         return MM_ERROR_NONE;
 262 }
 263
 264 static int __mmcamcorder_resource_include_resource(MMCamcorderResourceManager *resource_manager, const char *resource_name)
 265 {
 266         mrp_res_resource_t *resource = NULL;
 267         resource = mrp_res_create_resource(resource_manager->rset,
 268                                 resource_name,
 269                                 MRP_RESOURCE_TYPE_MANDATORY,
 270                                 MRP_RESOURCE_TYPE_EXCLUSIVE);
 271         if (resource == NULL) {
 272                 _mmcam_dbg_err(" - could not include resource[%s]", resource_name);
 273                 return MM_ERROR_RESOURCE_INTERNAL;
 274         }
 275
 276         resource_manager->acquire_count++;
 277
 278         _mmcam_dbg_log(" - count[%d] include resource[%s]",
 279                 resource_manager->acquire_count, resource_name);
 280
 281         return MM_ERROR_NONE;
 282 }
 283
 284 static int __mmcamcorder_resource_set_release_cb(MMCamcorderResourceManager *resource_manager)
 285 {
 286         int ret = MM_ERROR_NONE;
 287         bool mrp_ret = FALSE;
 288
 289         if (resource_manager->rset) {
 290                 mrp_ret = mrp_res_set_release_callback(resource_manager->rset, __mmcamcorder_resource_release_cb, resource_manager->user_data);
 291                 if (!mrp_ret) {
 292                         _mmcam_dbg_err(" - could not set release callback");
 293                         ret = MM_ERROR_RESOURCE_INTERNAL;
 294                 }
 295         } else {
 296                 _mmcam_dbg_err(" - resource set is null");
 297                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 298         }
 299
 300         return ret;
 301 }
 302
 303 int _mmcamcorder_resource_manager_init(MMCamcorderResourceManager *resource_manager, void *user_data)
 304 {
 305         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 306
 307         resource_manager->mloop = mrp_mainloop_glib_get(g_main_loop_new(NULL, TRUE));
 308         if (resource_manager->mloop) {
 309                 resource_manager->context = mrp_res_create(resource_manager->mloop, __mmcamcorder_resource_state_callback, user_data);
 310                 if (resource_manager->context == NULL) {
 311                         _mmcam_dbg_err(" - could not get context for resource manager");
 312                         mrp_mainloop_destroy(resource_manager->mloop);
 313                         resource_manager->mloop = NULL;
 314                         return MM_ERROR_RESOURCE_INTERNAL;
 315                 }
 316                 resource_manager->user_data = user_data;
 317         } else {
 318                 _mmcam_dbg_err("- could not get mainloop for resource manager");
 319                 return MM_ERROR_RESOURCE_INTERNAL;
 320         }
 321
 322         return MM_ERROR_NONE;
 323 }
 324
 325 int _mmcamcorder_resource_manager_prepare(MMCamcorderResourceManager *resource_manager, MMCamcorderResourceType resource_type)
 326 {
 327         int ret = MM_ERROR_NONE;
 328         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 329         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 330
 331         if (!resource_manager->rset) {
 332                 ret = __mmcamcorder_resource_create_resource_set(resource_manager);
 333         }
 334         if (ret == MM_ERROR_NONE) {
 335                 ret = __mmcamcorder_resource_include_resource(resource_manager, mm_camcorder_resource_str[resource_type]);
 336         } else {
 337                 _mmcam_dbg_err("failed to create resource set 0x%x", ret);
 338         }
 339
 340         return ret;
 341 }
 342
 343 int _mmcamcorder_resource_manager_acquire(MMCamcorderResourceManager *resource_manager)
 344 {
 345         int ret = MM_ERROR_NONE;
 346         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 347         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 348
 349         if (resource_manager->rset == NULL) {
 350                 _mmcam_dbg_err("- could not acquire resource, resource set is null");
 351                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 352         } else {
 353                 ret = __mmcamcorder_resource_set_release_cb(resource_manager);
 354                 if (ret) {
 355                         _mmcam_dbg_err("- could not set resource release cb, ret(%d)", ret);
 356                         ret = MM_ERROR_RESOURCE_INTERNAL;
 357                 } else {
 358                         ret = mrp_res_acquire_resource_set(resource_manager->rset);
 359                         if (ret) {
 360                                 _mmcam_dbg_err("- could not acquire resource, ret(%d)", ret);
 361                                 ret = MM_ERROR_RESOURCE_INTERNAL;
 362                         }
 363                 }
 364         }
 365
 366         return ret;
 367 }
 368
 369 int _mmcamcorder_resource_manager_release(MMCamcorderResourceManager *resource_manager)
 370 {
 371         int ret = MM_ERROR_NONE;
 372         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 373         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 374
 375         if (resource_manager->rset == NULL) {
 376                 _mmcam_dbg_err("- could not release resource, resource set is null");
 377                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 378         } else {
 379                 if (resource_manager->rset->state != MRP_RES_RESOURCE_ACQUIRED) {
 380                         _mmcam_dbg_err("- could not release resource, resource set state is [%s]",
 381                                 __mmcamcorder_resource_state_to_str(resource_manager->rset->state));
 382                         ret = MM_ERROR_RESOURCE_INVALID_STATE;
 383                 } else {
 384                         ret = mrp_res_release_resource_set(resource_manager->rset);
 385                         if (ret) {
 386                                 _mmcam_dbg_err("- could not release resource, ret(%d)", ret);
 387                                 ret = MM_ERROR_RESOURCE_INTERNAL;
 388                         } else {
 389                                 _mmcam_dbg_log("resource release done");
 390                         }
 391                 }
 392         }
 393
 394         return ret;
 395 }
 396
 397 int _mmcamcorder_resource_manager_unprepare(MMCamcorderResourceManager *resource_manager)
 398 {
 399         int ret = MM_ERROR_NONE;
 400         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 401         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 402
 403         if (resource_manager->rset == NULL) {
 404                 _mmcam_dbg_err("- could not unprepare for resource_manager, _mmcamcorder_resource_manager_prepare() first");
 405                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 406         } else {
 407                 mrp_res_delete_resource_set(resource_manager->rset);
 408                 resource_manager->rset = NULL;
 409                 _mmcam_dbg_log("delete resource set done");
 410         }
 411
 412         return ret;
 413 }
 414
 415 int _mmcamcorder_resource_manager_deinit(MMCamcorderResourceManager *resource_manager)
 416 {
 417         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 418         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 419
 420         if (resource_manager->rset) {
 421                 if (resource_manager->rset->state == MRP_RES_RESOURCE_ACQUIRED) {
 422                         _mmcam_dbg_warn("resource is still acquired. release...");
 423                         if (mrp_res_release_resource_set(resource_manager->rset))
 424                                 _mmcam_dbg_err("- could not release resource");
 425                 }
 426                 _mmcam_dbg_log("delete resource set");
 427                 mrp_res_delete_resource_set(resource_manager->rset);
 428                 resource_manager->rset = NULL;
 429         }
 430         if (resource_manager->context) {
 431                 _mmcam_dbg_log("destroy resource context");
 432                 mrp_res_destroy(resource_manager->context);
 433                 resource_manager->context = NULL;
 434         }
 435         if (resource_manager->mloop) {
 436                 _mmcam_dbg_log("destroy resource mainloop");
 437                 mrp_mainloop_destroy(resource_manager->mloop);
 438                 resource_manager->mloop = NULL;
 439         }
 440
 441         return MM_ERROR_NONE;
 442 }