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                 _MMCAMCORDER_UNLOCK_ASM(camcorder);
 203                 _mmcam_dbg_warn("- resource set(%p) is not same as this camcorder handle's(%p)", rs, camcorder->resource_manager.rset);
 204                 return;
 205         }
 206
 207         _mmcam_dbg_log(" - resource set state of camcorder(%p) is changed to [%s]",
 208                 camcorder, __mmcamcorder_resource_state_to_str(rs->state));
 209
 210         for (i = 0; i < MM_CAMCORDER_RESOURCE_MAX; i++) {
 211                 res = mrp_res_get_resource_by_name(rs, mm_camcorder_resource_str[i]);
 212                 if (res == NULL) {
 213                         _mmcam_dbg_warn(" -- %s not present in resource set", mm_camcorder_resource_str[i]);
 214                 } else {
 215                         _mmcam_dbg_log(" -- resource name [%s] -> [%s]",
 216                                 res->name, __mmcamcorder_resource_state_to_str(res->state));
 217                 }
 218         }
 219
 220         /* Stop the camera */
 221         __mmcamcorder_force_stop(camcorder);
 222
 223         /* restore value */
 224         camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_NORMAL;
 225
 226         _MMCAMCORDER_UNLOCK_ASM(camcorder);
 227
 228         return;
 229 }
 230
 231 static int __mmcamcorder_resource_create_resource_set(MMCamcorderResourceManager *resource_manager)
 232 {
 233         if (resource_manager->rset) {
 234                 _mmcam_dbg_err(" - resource set was already created");
 235                 return MM_ERROR_RESOURCE_INVALID_STATE;
 236         }
 237
 238         resource_manager->rset = mrp_res_create_resource_set(resource_manager->context,
 239                 MRP_APP_CLASS_FOR_CAMCORDER, __mmcamcorder_resource_set_state_callback, (void*)resource_manager->user_data);
 240
 241         if (resource_manager->rset == NULL) {
 242                 _mmcam_dbg_err(" - could not create resource set");
 243                 return MM_ERROR_RESOURCE_INTERNAL;
 244         }
 245
 246         if (!mrp_res_set_autorelease(TRUE, resource_manager->rset)) {
 247                 _mmcam_dbg_warn(" - could not set autorelease flag!");
 248         }
 249
 250         return MM_ERROR_NONE;
 251 }
 252
 253 static int __mmcamcorder_resource_include_resource(MMCamcorderResourceManager *resource_manager, const char *resource_name)
 254 {
 255         mrp_res_resource_t *resource = NULL;
 256         resource = mrp_res_create_resource(resource_manager->rset,
 257                                 resource_name,
 258                                 MRP_RESOURCE_TYPE_MANDATORY,
 259                                 MRP_RESOURCE_TYPE_EXCLUSIVE);
 260         if (resource == NULL) {
 261                 _mmcam_dbg_err(" - could not include resource[%s]", resource_name);
 262                 return MM_ERROR_RESOURCE_INTERNAL;
 263         }
 264
 265         resource_manager->acquire_count++;
 266
 267         _mmcam_dbg_log(" - count[%d] include resource[%s]",
 268                 resource_manager->acquire_count, resource_name);
 269
 270         return MM_ERROR_NONE;
 271 }
 272
 273 static int __mmcamcorder_resource_set_release_cb(MMCamcorderResourceManager *resource_manager)
 274 {
 275         int ret = MM_ERROR_NONE;
 276         bool mrp_ret = FALSE;
 277
 278         if (resource_manager->rset) {
 279                 mrp_ret = mrp_res_set_release_callback(resource_manager->rset, __mmcamcorder_resource_release_cb, resource_manager->user_data);
 280                 if (!mrp_ret) {
 281                         _mmcam_dbg_err(" - could not set release callback");
 282                         ret = MM_ERROR_RESOURCE_INTERNAL;
 283                 }
 284         } else {
 285                 _mmcam_dbg_err(" - resource set is null");
 286                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 287         }
 288
 289         return ret;
 290 }
 291
 292 int _mmcamcorder_resource_manager_init(MMCamcorderResourceManager *resource_manager, void *user_data)
 293 {
 294         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 295
 296         resource_manager->mloop = mrp_mainloop_glib_get(g_main_loop_new(NULL, TRUE));
 297         if (resource_manager->mloop) {
 298                 resource_manager->context = mrp_res_create(resource_manager->mloop, __mmcamcorder_resource_state_callback, user_data);
 299                 if (resource_manager->context == NULL) {
 300                         _mmcam_dbg_err(" - could not get context for resource manager");
 301                         mrp_mainloop_destroy(resource_manager->mloop);
 302                         resource_manager->mloop = NULL;
 303                         return MM_ERROR_RESOURCE_INTERNAL;
 304                 }
 305                 resource_manager->user_data = user_data;
 306         } else {
 307                 _mmcam_dbg_err("- could not get mainloop for resource manager");
 308                 return MM_ERROR_RESOURCE_INTERNAL;
 309         }
 310
 311         return MM_ERROR_NONE;
 312 }
 313
 314 int _mmcamcorder_resource_manager_prepare(MMCamcorderResourceManager *resource_manager, MMCamcorderResourceType resource_type)
 315 {
 316         int ret = MM_ERROR_NONE;
 317         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 318         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 319
 320         if (!resource_manager->rset) {
 321                 ret = __mmcamcorder_resource_create_resource_set(resource_manager);
 322         }
 323         if (ret == MM_ERROR_NONE) {
 324                 ret = __mmcamcorder_resource_include_resource(resource_manager, mm_camcorder_resource_str[resource_type]);
 325         } else {
 326                 _mmcam_dbg_err("failed to create resource set 0x%x", ret);
 327         }
 328
 329         return ret;
 330 }
 331
 332 int _mmcamcorder_resource_manager_acquire(MMCamcorderResourceManager *resource_manager)
 333 {
 334         int ret = MM_ERROR_NONE;
 335         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 336         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 337
 338         if (resource_manager->rset == NULL) {
 339                 _mmcam_dbg_err("- could not acquire resource, resource set is null");
 340                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 341         } else {
 342                 ret = __mmcamcorder_resource_set_release_cb(resource_manager);
 343                 if (ret) {
 344                         _mmcam_dbg_err("- could not set resource release cb, ret(%d)", ret);
 345                         ret = MM_ERROR_RESOURCE_INTERNAL;
 346                 } else {
 347                         ret = mrp_res_acquire_resource_set(resource_manager->rset);
 348                         if (ret) {
 349                                 _mmcam_dbg_err("- could not acquire resource, ret(%d)", ret);
 350                                 ret = MM_ERROR_RESOURCE_INTERNAL;
 351                         }
 352                 }
 353         }
 354
 355         return ret;
 356 }
 357
 358 int _mmcamcorder_resource_manager_release(MMCamcorderResourceManager *resource_manager)
 359 {
 360         int ret = MM_ERROR_NONE;
 361         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 362         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 363
 364         if (resource_manager->rset == NULL) {
 365                 _mmcam_dbg_err("- could not release resource, resource set is null");
 366                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 367         } else {
 368                 if (resource_manager->rset->state != MRP_RES_RESOURCE_ACQUIRED) {
 369                         _mmcam_dbg_err("- could not release resource, resource set state is [%s]",
 370                                 __mmcamcorder_resource_state_to_str(resource_manager->rset->state));
 371                         ret = MM_ERROR_RESOURCE_INVALID_STATE;
 372                 } else {
 373                         ret = mrp_res_release_resource_set(resource_manager->rset);
 374                         if (ret) {
 375                                 _mmcam_dbg_err("- could not release resource, ret(%d)", ret);
 376                                 ret = MM_ERROR_RESOURCE_INTERNAL;
 377                         } else {
 378                                 _mmcam_dbg_log("resource release done");
 379                         }
 380                 }
 381         }
 382
 383         return ret;
 384 }
 385
 386 int _mmcamcorder_resource_manager_unprepare(MMCamcorderResourceManager *resource_manager)
 387 {
 388         int ret = MM_ERROR_NONE;
 389         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 390         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 391
 392         if (resource_manager->rset == NULL) {
 393                 _mmcam_dbg_err("- could not unprepare for resource_manager, _mmcamcorder_resource_manager_prepare() first");
 394                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 395         } else {
 396                 mrp_res_delete_resource_set(resource_manager->rset);
 397                 resource_manager->rset = NULL;
 398                 _mmcam_dbg_log("delete resource set done");
 399         }
 400
 401         return ret;
 402 }
 403
 404 int _mmcamcorder_resource_manager_deinit(MMCamcorderResourceManager *resource_manager)
 405 {
 406         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 407         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 408
 409         if (resource_manager->rset) {
 410                 if (resource_manager->rset->state == MRP_RES_RESOURCE_ACQUIRED) {
 411                         _mmcam_dbg_warn("resource is still acquired. release...");
 412                         if (mrp_res_release_resource_set(resource_manager->rset))
 413                                 _mmcam_dbg_err("- could not release resource");
 414                 }
 415                 _mmcam_dbg_log("delete resource set");
 416                 mrp_res_delete_resource_set(resource_manager->rset);
 417                 resource_manager->rset = NULL;
 418         }
 419         if (resource_manager->context) {
 420                 _mmcam_dbg_log("destroy resource context");
 421                 mrp_res_destroy(resource_manager->context);
 422                 resource_manager->context = NULL;
 423         }
 424         if (resource_manager->mloop) {
 425                 _mmcam_dbg_log("destroy resource mainloop");
 426                 mrp_mainloop_destroy(resource_manager->mloop);
 427                 resource_manager->mloop = NULL;
 428         }
 429
 430         return MM_ERROR_NONE;
 431 }