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