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