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