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 enum {
  29         MRP_RESOURCE_FOR_VIDEO_OVERLAY,
  30         MRP_RESOURCE_FOR_CAMERA,
  31         MRP_RESOURCE_MAX,
  32 };
  33 const char* resource_str[MRP_RESOURCE_MAX] = {
  34     "video_overlay",
  35     "camera",
  36 };
  37
  38 #define MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(x_camcorder_resource_manager) \
  39 do { \
  40         if (!x_camcorder_resource_manager) { \
  41                 _mmcam_dbg_err("no resource manager instance"); \
  42                 return MM_ERROR_INVALID_ARGUMENT; \
  43         } \
  44 } while(0);
  45
  46 #define MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(x_camcorder_resource_manager) \
  47 do { \
  48         if (!x_camcorder_resource_manager) { \
  49                 _mmcam_dbg_err("no resource manager instance"); \
  50                 return MM_ERROR_INVALID_ARGUMENT; \
  51         } else { \
  52                 if (!x_camcorder_resource_manager->is_connected) { \
  53                         _mmcam_dbg_err("not connected to resource server yet"); \
  54                         return MM_ERROR_RESOURCE_NOT_INITIALIZED; \
  55                 } \
  56         } \
  57 } while(0);
  58
  59 static char *state_to_str(mrp_res_resource_state_t st)
  60 {
  61         char *state = "unknown";
  62         switch (st) {
  63         case MRP_RES_RESOURCE_ACQUIRED:
  64                 state = "acquired";
  65                 break;
  66         case MRP_RES_RESOURCE_LOST:
  67                 state = "lost";
  68                 break;
  69         case MRP_RES_RESOURCE_AVAILABLE:
  70                 state = "available";
  71                 break;
  72         case MRP_RES_RESOURCE_PENDING:
  73                 state = "pending";
  74                 break;
  75         case MRP_RES_RESOURCE_ABOUT_TO_LOOSE:
  76                 state = "about to loose";
  77                 break;
  78         }
  79         return state;
  80 }
  81
  82 static void mrp_state_callback(mrp_res_context_t *context, mrp_res_error_t err, void *user_data)
  83 {
  84         int i = 0;
  85         const mrp_res_resource_set_t *rset;
  86         mrp_res_resource_t *resource;
  87         mmf_camcorder_t* camcorder = NULL;
  88
  89         if (err != MRP_RES_ERROR_NONE) {
  90                 _mmcam_dbg_err(" - error message received from Murphy, err(0x%x)", err);
  91                 return;
  92         }
  93
  94         camcorder = (mmf_camcorder_t*)user_data;
  95
  96         mmf_return_if_fail((MMHandleType)camcorder);
  97
  98         switch (context->state) {
  99         case MRP_RES_CONNECTED:
 100                 _mmcam_dbg_log(" - connected to Murphy");
 101                 if ((rset = mrp_res_list_resources(context)) != NULL) {
 102                         mrp_res_string_array_t *resource_names;
 103                         resource_names = mrp_res_list_resource_names(rset);
 104                         if (!resource_names) {
 105                                 _mmcam_dbg_err(" - no resources available");
 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                 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         return;
 133 }
 134
 135
 136 static void mrp_rset_state_callback(mrp_res_context_t *cx, const mrp_res_resource_set_t *rs, void *user_data)
 137 {
 138         int i = 0;
 139         mmf_camcorder_t *camcorder = (mmf_camcorder_t *)user_data;
 140         mrp_res_resource_t *res;
 141
 142         mmf_return_if_fail((MMHandleType)camcorder);
 143
 144         if (!mrp_res_equal_resource_set(rs, camcorder->resource_manager.rset)) {
 145                 _mmcam_dbg_warn("- resource set(%p) is not same as this camcorder handle's(%p)", rs, camcorder->resource_manager.rset);
 146                 return;
 147         }
 148
 149         _mmcam_dbg_log(" - resource set state of camcorder(%p) is changed to [%s]", camcorder, state_to_str(rs->state));
 150         for (i = 0; i < MRP_RESOURCE_MAX; i++) {
 151                 res = mrp_res_get_resource_by_name(rs, resource_str[i]);
 152                 if (res == NULL) {
 153                         _mmcam_dbg_warn(" -- %s not present in resource set", resource_str[i]);
 154                 } else {
 155                         _mmcam_dbg_log(" -- resource name [%s] -> [%s]", res->name, state_to_str(res->state));
 156                 }
 157         }
 158
 159         mrp_res_delete_resource_set(camcorder->resource_manager.rset);
 160         camcorder->resource_manager.rset = mrp_res_copy_resource_set(rs);
 161
 162         return;
 163 }
 164
 165
 166 static void mrp_resource_release_cb (mrp_res_context_t *cx, const mrp_res_resource_set_t *rs, void *user_data)
 167 {
 168         int i = 0;
 169         int current_state = MM_CAMCORDER_STATE_NONE;
 170         mmf_camcorder_t* camcorder = (mmf_camcorder_t*)user_data;
 171         mrp_res_resource_t *res;
 172
 173         mmf_return_if_fail((MMHandleType)camcorder);
 174
 175         current_state = _mmcamcorder_get_state((MMHandleType)camcorder);
 176         if (current_state <= MM_CAMCORDER_STATE_NONE ||
 177             current_state >= MM_CAMCORDER_STATE_NUM) {
 178                 _mmcam_dbg_err("Abnormal state. Or null handle. (%p, %d)", camcorder, current_state);
 179                 return;
 180         }
 181
 182         /* set value to inform a status is changed by resource manaer */
 183         camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_BY_RM;
 184
 185         _MMCAMCORDER_LOCK_ASM(camcorder);
 186
 187         if (!mrp_res_equal_resource_set(rs, camcorder->resource_manager.rset)) {
 188                 _mmcam_dbg_warn("- resource set(%p) is not same as this camcorder handle's(%p)", rs, camcorder->resource_manager.rset);
 189                 return;
 190         }
 191
 192         _mmcam_dbg_log(" - resource set state of camcorder(%p) is changed to [%s]", camcorder, state_to_str(rs->state));
 193         for (i = 0; i < MRP_RESOURCE_MAX; i++) {
 194                 res = mrp_res_get_resource_by_name(rs, resource_str[i]);
 195                 if (res == NULL) {
 196                         _mmcam_dbg_warn(" -- %s not present in resource set", resource_str[i]);
 197                 } else {
 198                         _mmcam_dbg_log(" -- resource name [%s] -> [%s]", res->name, state_to_str(res->state));
 199                 }
 200         }
 201
 202         /* Stop the camera */
 203         __mmcamcorder_force_stop(camcorder);
 204
 205         /* restore value */
 206         camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_NORMAL;
 207
 208         _MMCAMCORDER_UNLOCK_ASM(camcorder);
 209
 210         return;
 211 }
 212
 213 static int create_rset(MMCamcorderResourceManager *resource_manager)
 214 {
 215         if (resource_manager->rset) {
 216                 _mmcam_dbg_err(" - resource set was already created");
 217                 return MM_ERROR_RESOURCE_INVALID_STATE;
 218         }
 219
 220         resource_manager->rset = mrp_res_create_resource_set(resource_manager->context,
 221                                 MRP_APP_CLASS_FOR_CAMCORDER,
 222                                 mrp_rset_state_callback,
 223                                 (void*)resource_manager->user_data);
 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 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 set_resource_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, mrp_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, mrp_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 = create_rset(resource_manager);
 302         }
 303         if (ret == MM_ERROR_NONE) {
 304                 switch (resource_type) {
 305                 case RESOURCE_TYPE_VIDEO_OVERLAY:
 306                         ret = include_resource(resource_manager, resource_str[MRP_RESOURCE_FOR_VIDEO_OVERLAY]);
 307                         break;
 308                 case RESOURCE_TYPE_CAMERA:
 309                         ret = include_resource(resource_manager, resource_str[MRP_RESOURCE_FOR_CAMERA]);
 310                         break;
 311                 }
 312         }
 313
 314         return ret;
 315 }
 316
 317 int _mmcamcorder_resource_manager_acquire(MMCamcorderResourceManager *resource_manager)
 318 {
 319         int ret = MM_ERROR_NONE;
 320         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 321         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 322
 323         if (resource_manager->rset == NULL) {
 324                 _mmcam_dbg_err("- could not acquire resource, resource set is null");
 325                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 326         } else {
 327                 ret = set_resource_release_cb(resource_manager);
 328                 if (ret) {
 329                         _mmcam_dbg_err("- could not set resource release cb, ret(%d)", ret);
 330                         ret = MM_ERROR_RESOURCE_INTERNAL;
 331                 } else {
 332                         ret = mrp_res_acquire_resource_set(resource_manager->rset);
 333                         if (ret) {
 334                                 _mmcam_dbg_err("- could not acquire resource, ret(%d)", ret);
 335                                 ret = MM_ERROR_RESOURCE_INTERNAL;
 336                         }
 337                 }
 338         }
 339
 340         return ret;
 341 }
 342
 343 int _mmcamcorder_resource_manager_release(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 release resource, resource set is null");
 351                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 352         } else {
 353                 if (resource_manager->rset->state != MRP_RES_RESOURCE_ACQUIRED) {
 354                         _mmcam_dbg_err("- could not release resource, resource set state is [%s]", state_to_str(resource_manager->rset->state));
 355                         ret = MM_ERROR_RESOURCE_INVALID_STATE;
 356                 } else {
 357                         ret = mrp_res_release_resource_set(resource_manager->rset);
 358                         if (ret) {
 359                                 _mmcam_dbg_err("- could not release resource, ret(%d)", ret);
 360                                 ret = MM_ERROR_RESOURCE_INTERNAL;
 361                         } else {
 362                                 _mmcam_dbg_log("resource release done");
 363                         }
 364                 }
 365         }
 366
 367         return ret;
 368 }
 369
 370 int _mmcamcorder_resource_manager_unprepare(MMCamcorderResourceManager *resource_manager)
 371 {
 372         int ret = MM_ERROR_NONE;
 373         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 374         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 375
 376         if (resource_manager->rset == NULL) {
 377                 _mmcam_dbg_err("- could not unprepare for resource_manager, _mmcamcorder_resource_manager_prepare() first");
 378                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 379         } else {
 380                 mrp_res_delete_resource_set(resource_manager->rset);
 381                 resource_manager->rset = NULL;
 382                 _mmcam_dbg_log("delete resource set done");
 383         }
 384
 385         return ret;
 386 }
 387
 388 int _mmcamcorder_resource_manager_deinit(MMCamcorderResourceManager *resource_manager)
 389 {
 390         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 391         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 392
 393         if (resource_manager->rset) {
 394                 if (resource_manager->rset->state == MRP_RES_RESOURCE_ACQUIRED) {
 395                         _mmcam_dbg_warn("resource is still acquired. release...");
 396                         if (mrp_res_release_resource_set(resource_manager->rset))
 397                                 _mmcam_dbg_err("- could not release resource");
 398                 }
 399                 _mmcam_dbg_log("delete resource set");
 400                 mrp_res_delete_resource_set(resource_manager->rset);
 401                 resource_manager->rset = NULL;
 402         }
 403         if (resource_manager->context) {
 404                 _mmcam_dbg_log("destroy resource context");
 405                 mrp_res_destroy(resource_manager->context);
 406                 resource_manager->context = NULL;
 407         }
 408         if (resource_manager->mloop) {
 409                 _mmcam_dbg_log("destroy resource mainloop");
 410                 mrp_mainloop_destroy(resource_manager->mloop);
 411                 resource_manager->mloop = NULL;
 412         }
 413
 414         return MM_ERROR_NONE;
 415 }