Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | #include <pjmedia/vid_codec.h> |
| 21 | #include <pjmedia/errno.h> |
| 22 | #include <pj/array.h> |
| 23 | #include <pj/assert.h> |
| 24 | #include <pj/log.h> |
| 25 | #include <pj/string.h> |
| 26 | |
| 27 | |
| 28 | #if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0) |
| 29 | |
| 30 | |
| 31 | #define THIS_FILE "vid_codec.c" |
| 32 | |
| 33 | static pjmedia_vid_codec_mgr *def_vid_codec_mgr; |
| 34 | |
| 35 | |
| 36 | /* Definition of default codecs parameters */ |
| 37 | typedef struct pjmedia_vid_codec_default_param |
| 38 | { |
| 39 | pj_pool_t *pool; |
| 40 | pjmedia_vid_codec_param *param; |
| 41 | } pjmedia_vid_codec_default_param; |
| 42 | |
| 43 | |
| 44 | /* |
| 45 | * Codec manager maintains array of these structs for each supported |
| 46 | * codec. |
| 47 | */ |
| 48 | typedef struct pjmedia_vid_codec_desc |
| 49 | { |
| 50 | pjmedia_vid_codec_info info; /**< Codec info. */ |
| 51 | pjmedia_codec_id id; /**< Fully qualified name */ |
| 52 | pjmedia_codec_priority prio; /**< Priority. */ |
| 53 | pjmedia_vid_codec_factory *factory; /**< The factory. */ |
| 54 | pjmedia_vid_codec_default_param *def_param; /**< Default codecs |
| 55 | parameters. */ |
| 56 | } pjmedia_vid_codec_desc; |
| 57 | |
| 58 | |
| 59 | /* The declaration of video codec manager */ |
| 60 | struct pjmedia_vid_codec_mgr |
| 61 | { |
| 62 | /** Pool factory instance. */ |
| 63 | pj_pool_factory *pf; |
| 64 | |
| 65 | /** Codec manager mutex. */ |
| 66 | pj_mutex_t *mutex; |
| 67 | |
| 68 | /** List of codec factories registered to codec manager. */ |
| 69 | pjmedia_vid_codec_factory factory_list; |
| 70 | |
| 71 | /** Number of supported codecs. */ |
| 72 | unsigned codec_cnt; |
| 73 | |
| 74 | /** Array of codec descriptor. */ |
| 75 | pjmedia_vid_codec_desc codec_desc[PJMEDIA_CODEC_MGR_MAX_CODECS]; |
| 76 | |
| 77 | }; |
| 78 | |
| 79 | |
| 80 | |
| 81 | /* Sort codecs in codec manager based on priorities */ |
| 82 | static void sort_codecs(pjmedia_vid_codec_mgr *mgr); |
| 83 | |
| 84 | |
| 85 | /* |
| 86 | * Duplicate video codec parameter. |
| 87 | */ |
| 88 | PJ_DEF(pjmedia_vid_codec_param*) pjmedia_vid_codec_param_clone( |
| 89 | pj_pool_t *pool, |
| 90 | const pjmedia_vid_codec_param *src) |
| 91 | { |
| 92 | pjmedia_vid_codec_param *p; |
| 93 | unsigned i; |
| 94 | |
| 95 | PJ_ASSERT_RETURN(pool && src, NULL); |
| 96 | |
| 97 | p = PJ_POOL_ZALLOC_T(pool, pjmedia_vid_codec_param); |
| 98 | |
| 99 | /* Update codec param */ |
| 100 | pj_memcpy(p, src, sizeof(pjmedia_vid_codec_param)); |
| 101 | for (i = 0; i < src->dec_fmtp.cnt; ++i) { |
| 102 | pj_strdup(pool, &p->dec_fmtp.param[i].name, |
| 103 | &src->dec_fmtp.param[i].name); |
| 104 | pj_strdup(pool, &p->dec_fmtp.param[i].val, |
| 105 | &src->dec_fmtp.param[i].val); |
| 106 | } |
| 107 | for (i = 0; i < src->enc_fmtp.cnt; ++i) { |
| 108 | pj_strdup(pool, &p->enc_fmtp.param[i].name, |
| 109 | &src->enc_fmtp.param[i].name); |
| 110 | pj_strdup(pool, &p->enc_fmtp.param[i].val, |
| 111 | &src->enc_fmtp.param[i].val); |
| 112 | } |
| 113 | |
| 114 | return p; |
| 115 | } |
| 116 | |
| 117 | /* |
| 118 | * Initialize codec manager. |
| 119 | */ |
| 120 | PJ_DEF(pj_status_t) pjmedia_vid_codec_mgr_create( |
| 121 | pj_pool_t *pool, |
| 122 | pjmedia_vid_codec_mgr **p_mgr) |
| 123 | { |
| 124 | pjmedia_vid_codec_mgr *mgr; |
| 125 | pj_status_t status; |
| 126 | |
| 127 | PJ_ASSERT_RETURN(pool, PJ_EINVAL); |
| 128 | |
| 129 | mgr = PJ_POOL_ZALLOC_T(pool, pjmedia_vid_codec_mgr); |
| 130 | mgr->pf = pool->factory; |
| 131 | pj_list_init (&mgr->factory_list); |
| 132 | mgr->codec_cnt = 0; |
| 133 | |
| 134 | /* Create mutex */ |
| 135 | status = pj_mutex_create_recursive(pool, "vid-codec-mgr", &mgr->mutex); |
| 136 | if (status != PJ_SUCCESS) |
| 137 | return status; |
| 138 | |
| 139 | if (!def_vid_codec_mgr) |
| 140 | def_vid_codec_mgr = mgr; |
| 141 | |
| 142 | if (p_mgr) |
| 143 | *p_mgr = mgr; |
| 144 | |
| 145 | return PJ_SUCCESS; |
| 146 | } |
| 147 | |
| 148 | /* |
| 149 | * Initialize codec manager. |
| 150 | */ |
| 151 | PJ_DEF(pj_status_t) pjmedia_vid_codec_mgr_destroy (pjmedia_vid_codec_mgr *mgr) |
| 152 | { |
| 153 | if (!mgr) mgr = def_vid_codec_mgr; |
| 154 | PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| 155 | |
| 156 | /* Destroy mutex */ |
| 157 | if (mgr->mutex) |
| 158 | pj_mutex_destroy(mgr->mutex); |
| 159 | |
| 160 | /* Just for safety, set codec manager states to zero */ |
| 161 | pj_bzero(mgr, sizeof(pjmedia_vid_codec_mgr)); |
| 162 | |
| 163 | if (mgr == def_vid_codec_mgr) |
| 164 | def_vid_codec_mgr = NULL; |
| 165 | |
| 166 | return PJ_SUCCESS; |
| 167 | } |
| 168 | |
| 169 | |
| 170 | PJ_DEF(pjmedia_vid_codec_mgr*) pjmedia_vid_codec_mgr_instance(void) |
| 171 | { |
| 172 | //pj_assert(def_vid_codec_mgr); |
| 173 | return def_vid_codec_mgr; |
| 174 | } |
| 175 | |
| 176 | PJ_DEF(void) pjmedia_vid_codec_mgr_set_instance(pjmedia_vid_codec_mgr* mgr) |
| 177 | { |
| 178 | def_vid_codec_mgr = mgr; |
| 179 | } |
| 180 | |
| 181 | |
| 182 | /* |
| 183 | * Register a codec factory. |
| 184 | */ |
| 185 | PJ_DEF(pj_status_t) pjmedia_vid_codec_mgr_register_factory( |
| 186 | pjmedia_vid_codec_mgr *mgr, |
| 187 | pjmedia_vid_codec_factory *factory) |
| 188 | { |
| 189 | pjmedia_vid_codec_info info[PJMEDIA_CODEC_MGR_MAX_CODECS]; |
| 190 | unsigned i, count; |
| 191 | pj_status_t status; |
| 192 | |
| 193 | PJ_ASSERT_RETURN(factory, PJ_EINVAL); |
| 194 | |
| 195 | if (!mgr) mgr = def_vid_codec_mgr; |
| 196 | PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| 197 | |
| 198 | /* Enum codecs */ |
| 199 | count = PJ_ARRAY_SIZE(info); |
| 200 | status = factory->op->enum_info(factory, &count, info); |
| 201 | if (status != PJ_SUCCESS) |
| 202 | return status; |
| 203 | |
| 204 | pj_mutex_lock(mgr->mutex); |
| 205 | |
| 206 | /* Check codec count */ |
| 207 | if (count + mgr->codec_cnt > PJ_ARRAY_SIZE(mgr->codec_desc)) { |
| 208 | pj_mutex_unlock(mgr->mutex); |
| 209 | return PJ_ETOOMANY; |
| 210 | } |
| 211 | |
| 212 | |
| 213 | /* Save the codecs */ |
| 214 | for (i=0; i<count; ++i) { |
| 215 | pj_memcpy( &mgr->codec_desc[mgr->codec_cnt+i], |
| 216 | &info[i], sizeof(pjmedia_vid_codec_info)); |
| 217 | mgr->codec_desc[mgr->codec_cnt+i].prio = PJMEDIA_CODEC_PRIO_NORMAL; |
| 218 | mgr->codec_desc[mgr->codec_cnt+i].factory = factory; |
| 219 | pjmedia_vid_codec_info_to_id( &info[i], |
| 220 | mgr->codec_desc[mgr->codec_cnt+i].id, |
| 221 | sizeof(pjmedia_codec_id)); |
| 222 | } |
| 223 | |
| 224 | /* Update count */ |
| 225 | mgr->codec_cnt += count; |
| 226 | |
| 227 | /* Re-sort codec based on priorities */ |
| 228 | sort_codecs(mgr); |
| 229 | |
| 230 | /* Add factory to the list */ |
| 231 | pj_list_push_back(&mgr->factory_list, factory); |
| 232 | |
| 233 | pj_mutex_unlock(mgr->mutex); |
| 234 | |
| 235 | return PJ_SUCCESS; |
| 236 | } |
| 237 | |
| 238 | |
| 239 | /* |
| 240 | * Unregister a codec factory. |
| 241 | */ |
| 242 | PJ_DEF(pj_status_t) pjmedia_vid_codec_mgr_unregister_factory( |
| 243 | pjmedia_vid_codec_mgr *mgr, |
| 244 | pjmedia_vid_codec_factory *factory) |
| 245 | { |
| 246 | unsigned i; |
| 247 | PJ_ASSERT_RETURN(factory, PJ_EINVAL); |
| 248 | |
| 249 | if (!mgr) mgr = def_vid_codec_mgr; |
| 250 | PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| 251 | |
| 252 | pj_mutex_lock(mgr->mutex); |
| 253 | |
| 254 | /* Factory must be registered. */ |
| 255 | if (pj_list_find_node(&mgr->factory_list, factory) != factory) { |
| 256 | pj_mutex_unlock(mgr->mutex); |
| 257 | return PJ_ENOTFOUND; |
| 258 | } |
| 259 | |
| 260 | /* Erase factory from the factory list */ |
| 261 | pj_list_erase(factory); |
| 262 | |
| 263 | |
| 264 | /* Remove all supported codecs from the codec manager that were created |
| 265 | * by the specified factory. |
| 266 | */ |
| 267 | for (i=0; i<mgr->codec_cnt; ) { |
| 268 | |
| 269 | if (mgr->codec_desc[i].factory == factory) { |
| 270 | /* Remove the codec from array of codec descriptions */ |
| 271 | pj_array_erase(mgr->codec_desc, sizeof(mgr->codec_desc[0]), |
| 272 | mgr->codec_cnt, i); |
| 273 | --mgr->codec_cnt; |
| 274 | |
| 275 | } else { |
| 276 | ++i; |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | pj_mutex_unlock(mgr->mutex); |
| 281 | |
| 282 | return PJ_SUCCESS; |
| 283 | } |
| 284 | |
| 285 | |
| 286 | /* |
| 287 | * Enum all codecs. |
| 288 | */ |
| 289 | PJ_DEF(pj_status_t) pjmedia_vid_codec_mgr_enum_codecs( |
| 290 | pjmedia_vid_codec_mgr *mgr, |
| 291 | unsigned *count, |
| 292 | pjmedia_vid_codec_info codecs[], |
| 293 | unsigned *prio) |
| 294 | { |
| 295 | unsigned i; |
| 296 | |
| 297 | PJ_ASSERT_RETURN(count && codecs, PJ_EINVAL); |
| 298 | |
| 299 | if (!mgr) mgr = def_vid_codec_mgr; |
| 300 | PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| 301 | |
| 302 | pj_mutex_lock(mgr->mutex); |
| 303 | |
| 304 | if (*count > mgr->codec_cnt) |
| 305 | *count = mgr->codec_cnt; |
| 306 | |
| 307 | for (i=0; i<*count; ++i) { |
| 308 | pj_memcpy(&codecs[i], |
| 309 | &mgr->codec_desc[i].info, |
| 310 | sizeof(pjmedia_vid_codec_info)); |
| 311 | } |
| 312 | |
| 313 | if (prio) { |
| 314 | for (i=0; i < *count; ++i) |
| 315 | prio[i] = mgr->codec_desc[i].prio; |
| 316 | } |
| 317 | |
| 318 | pj_mutex_unlock(mgr->mutex); |
| 319 | |
| 320 | return PJ_SUCCESS; |
| 321 | } |
| 322 | |
| 323 | |
| 324 | /* |
| 325 | * Get codec info for the specified payload type. |
| 326 | */ |
| 327 | PJ_DEF(pj_status_t) pjmedia_vid_codec_mgr_get_codec_info( |
| 328 | pjmedia_vid_codec_mgr *mgr, |
| 329 | unsigned pt, |
| 330 | const pjmedia_vid_codec_info **p_info) |
| 331 | { |
| 332 | unsigned i; |
| 333 | |
| 334 | PJ_ASSERT_RETURN(p_info, PJ_EINVAL); |
| 335 | |
| 336 | if (!mgr) mgr = def_vid_codec_mgr; |
| 337 | PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| 338 | |
| 339 | pj_mutex_lock(mgr->mutex); |
| 340 | |
| 341 | for (i=0; i<mgr->codec_cnt; ++i) { |
| 342 | if (mgr->codec_desc[i].info.pt == pt) { |
| 343 | *p_info = &mgr->codec_desc[i].info; |
| 344 | |
| 345 | pj_mutex_unlock(mgr->mutex); |
| 346 | return PJ_SUCCESS; |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | pj_mutex_unlock(mgr->mutex); |
| 351 | |
| 352 | return PJMEDIA_CODEC_EUNSUP; |
| 353 | } |
| 354 | |
| 355 | |
| 356 | PJ_DEF(pj_status_t) pjmedia_vid_codec_mgr_get_codec_info2( |
| 357 | pjmedia_vid_codec_mgr *mgr, |
| 358 | pjmedia_format_id fmt_id, |
| 359 | const pjmedia_vid_codec_info **p_info) |
| 360 | { |
| 361 | unsigned i; |
| 362 | |
| 363 | PJ_ASSERT_RETURN(p_info, PJ_EINVAL); |
| 364 | |
| 365 | if (!mgr) mgr = def_vid_codec_mgr; |
| 366 | PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| 367 | |
| 368 | pj_mutex_lock(mgr->mutex); |
| 369 | |
| 370 | for (i=0; i<mgr->codec_cnt; ++i) { |
| 371 | if (mgr->codec_desc[i].info.fmt_id == fmt_id) { |
| 372 | *p_info = &mgr->codec_desc[i].info; |
| 373 | |
| 374 | pj_mutex_unlock(mgr->mutex); |
| 375 | return PJ_SUCCESS; |
| 376 | } |
| 377 | } |
| 378 | |
| 379 | pj_mutex_unlock(mgr->mutex); |
| 380 | |
| 381 | return PJMEDIA_CODEC_EUNSUP; |
| 382 | } |
| 383 | |
| 384 | |
| 385 | /* |
| 386 | * Convert codec info struct into a unique codec identifier. |
| 387 | * A codec identifier looks something like "H263/34". |
| 388 | */ |
| 389 | PJ_DEF(char*) pjmedia_vid_codec_info_to_id( |
| 390 | const pjmedia_vid_codec_info *info, |
| 391 | char *id, unsigned max_len ) |
| 392 | { |
| 393 | int len; |
| 394 | |
| 395 | PJ_ASSERT_RETURN(info && id && max_len, NULL); |
| 396 | |
| 397 | len = pj_ansi_snprintf(id, max_len, "%.*s/%u", |
| 398 | (int)info->encoding_name.slen, |
| 399 | info->encoding_name.ptr, |
| 400 | info->pt); |
| 401 | |
| 402 | if (len < 1 || len >= (int)max_len) { |
| 403 | id[0] = '\0'; |
| 404 | return NULL; |
| 405 | } |
| 406 | |
| 407 | return id; |
| 408 | } |
| 409 | |
| 410 | |
| 411 | /* |
| 412 | * Find codecs by the unique codec identifier. This function will find |
| 413 | * all codecs that match the codec identifier prefix. For example, if |
| 414 | * "L16" is specified, then it will find "L16/8000/1", "L16/16000/1", |
| 415 | * and so on, up to the maximum count specified in the argument. |
| 416 | */ |
| 417 | PJ_DEF(pj_status_t) pjmedia_vid_codec_mgr_find_codecs_by_id( |
| 418 | pjmedia_vid_codec_mgr *mgr, |
| 419 | const pj_str_t *codec_id, |
| 420 | unsigned *count, |
| 421 | const pjmedia_vid_codec_info *p_info[], |
| 422 | unsigned prio[]) |
| 423 | { |
| 424 | unsigned i, found = 0; |
| 425 | |
| 426 | PJ_ASSERT_RETURN(codec_id && count && *count, PJ_EINVAL); |
| 427 | |
| 428 | if (!mgr) mgr = def_vid_codec_mgr; |
| 429 | PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| 430 | |
| 431 | pj_mutex_lock(mgr->mutex); |
| 432 | |
| 433 | for (i=0; i<mgr->codec_cnt; ++i) { |
| 434 | |
| 435 | if (codec_id->slen == 0 || |
| 436 | pj_strnicmp2(codec_id, mgr->codec_desc[i].id, |
| 437 | codec_id->slen) == 0) |
| 438 | { |
| 439 | |
| 440 | if (p_info) |
| 441 | p_info[found] = &mgr->codec_desc[i].info; |
| 442 | if (prio) |
| 443 | prio[found] = mgr->codec_desc[i].prio; |
| 444 | |
| 445 | ++found; |
| 446 | |
| 447 | if (found >= *count) |
| 448 | break; |
| 449 | } |
| 450 | |
| 451 | } |
| 452 | |
| 453 | pj_mutex_unlock(mgr->mutex); |
| 454 | |
| 455 | *count = found; |
| 456 | |
| 457 | return found ? PJ_SUCCESS : PJ_ENOTFOUND; |
| 458 | } |
| 459 | |
| 460 | |
| 461 | /* Swap two codecs positions in codec manager */ |
| 462 | static void swap_codec(pjmedia_vid_codec_mgr *mgr, unsigned i, unsigned j) |
| 463 | { |
| 464 | pjmedia_vid_codec_desc tmp; |
| 465 | |
| 466 | pj_memcpy(&tmp, &mgr->codec_desc[i], sizeof(pjmedia_vid_codec_desc)); |
| 467 | |
| 468 | pj_memcpy(&mgr->codec_desc[i], &mgr->codec_desc[j], |
| 469 | sizeof(pjmedia_vid_codec_desc)); |
| 470 | |
| 471 | pj_memcpy(&mgr->codec_desc[j], &tmp, sizeof(pjmedia_vid_codec_desc)); |
| 472 | } |
| 473 | |
| 474 | |
| 475 | /* Sort codecs in codec manager based on priorities */ |
| 476 | static void sort_codecs(pjmedia_vid_codec_mgr *mgr) |
| 477 | { |
| 478 | unsigned i; |
| 479 | |
| 480 | /* Re-sort */ |
| 481 | for (i=0; i<mgr->codec_cnt; ++i) { |
| 482 | unsigned j, max; |
| 483 | |
| 484 | for (max=i, j=i+1; j<mgr->codec_cnt; ++j) { |
| 485 | if (mgr->codec_desc[j].prio > mgr->codec_desc[max].prio) |
| 486 | max = j; |
| 487 | } |
| 488 | |
| 489 | if (max != i) |
| 490 | swap_codec(mgr, i, max); |
| 491 | } |
| 492 | |
| 493 | /* Change PJMEDIA_CODEC_PRIO_HIGHEST codecs to NEXT_HIGHER */ |
| 494 | for (i=0; i<mgr->codec_cnt; ++i) { |
| 495 | if (mgr->codec_desc[i].prio == PJMEDIA_CODEC_PRIO_HIGHEST) |
| 496 | mgr->codec_desc[i].prio = PJMEDIA_CODEC_PRIO_NEXT_HIGHER; |
| 497 | else |
| 498 | break; |
| 499 | } |
| 500 | } |
| 501 | |
| 502 | |
| 503 | /** |
| 504 | * Set codec priority. The codec priority determines the order of |
| 505 | * the codec in the SDP created by the endpoint. If more than one codecs |
| 506 | * are found with the same codec_id prefix, then the function sets the |
| 507 | * priorities of all those codecs. |
| 508 | */ |
| 509 | PJ_DEF(pj_status_t) pjmedia_vid_codec_mgr_set_codec_priority( |
| 510 | pjmedia_vid_codec_mgr *mgr, |
| 511 | const pj_str_t *codec_id, |
| 512 | pj_uint8_t prio) |
| 513 | { |
| 514 | unsigned i, found = 0; |
| 515 | |
| 516 | PJ_ASSERT_RETURN(codec_id, PJ_EINVAL); |
| 517 | |
| 518 | if (!mgr) mgr = def_vid_codec_mgr; |
| 519 | PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| 520 | |
| 521 | pj_mutex_lock(mgr->mutex); |
| 522 | |
| 523 | /* Update the priorities of affected codecs */ |
| 524 | for (i=0; i<mgr->codec_cnt; ++i) |
| 525 | { |
| 526 | if (codec_id->slen == 0 || |
| 527 | pj_strnicmp2(codec_id, mgr->codec_desc[i].id, |
| 528 | codec_id->slen) == 0) |
| 529 | { |
| 530 | mgr->codec_desc[i].prio = (pjmedia_codec_priority) prio; |
| 531 | ++found; |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | if (!found) { |
| 536 | pj_mutex_unlock(mgr->mutex); |
| 537 | return PJ_ENOTFOUND; |
| 538 | } |
| 539 | |
| 540 | /* Re-sort codecs */ |
| 541 | sort_codecs(mgr); |
| 542 | |
| 543 | pj_mutex_unlock(mgr->mutex); |
| 544 | |
| 545 | return PJ_SUCCESS; |
| 546 | } |
| 547 | |
| 548 | |
| 549 | /* |
| 550 | * Allocate one codec. |
| 551 | */ |
| 552 | PJ_DEF(pj_status_t) pjmedia_vid_codec_mgr_alloc_codec( |
| 553 | pjmedia_vid_codec_mgr *mgr, |
| 554 | const pjmedia_vid_codec_info *info, |
| 555 | pjmedia_vid_codec **p_codec) |
| 556 | { |
| 557 | pjmedia_vid_codec_factory *factory; |
| 558 | pj_status_t status; |
| 559 | |
| 560 | PJ_ASSERT_RETURN(info && p_codec, PJ_EINVAL); |
| 561 | |
| 562 | if (!mgr) mgr = def_vid_codec_mgr; |
| 563 | PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| 564 | |
| 565 | *p_codec = NULL; |
| 566 | |
| 567 | pj_mutex_lock(mgr->mutex); |
| 568 | |
| 569 | factory = mgr->factory_list.next; |
| 570 | while (factory != &mgr->factory_list) { |
| 571 | |
| 572 | if ( (*factory->op->test_alloc)(factory, info) == PJ_SUCCESS ) { |
| 573 | |
| 574 | status = (*factory->op->alloc_codec)(factory, info, p_codec); |
| 575 | if (status == PJ_SUCCESS) { |
| 576 | pj_mutex_unlock(mgr->mutex); |
| 577 | return PJ_SUCCESS; |
| 578 | } |
| 579 | |
| 580 | } |
| 581 | |
| 582 | factory = factory->next; |
| 583 | } |
| 584 | |
| 585 | pj_mutex_unlock(mgr->mutex); |
| 586 | |
| 587 | return PJMEDIA_CODEC_EUNSUP; |
| 588 | } |
| 589 | |
| 590 | |
| 591 | /* |
| 592 | * Get default codec parameter. |
| 593 | */ |
| 594 | PJ_DEF(pj_status_t) pjmedia_vid_codec_mgr_get_default_param( |
| 595 | pjmedia_vid_codec_mgr *mgr, |
| 596 | const pjmedia_vid_codec_info *info, |
| 597 | pjmedia_vid_codec_param *param ) |
| 598 | { |
| 599 | pjmedia_vid_codec_factory *factory; |
| 600 | pj_status_t status; |
| 601 | pjmedia_codec_id codec_id; |
| 602 | pjmedia_vid_codec_desc *codec_desc = NULL; |
| 603 | unsigned i; |
| 604 | |
| 605 | PJ_ASSERT_RETURN(info && param, PJ_EINVAL); |
| 606 | |
| 607 | if (!mgr) mgr = def_vid_codec_mgr; |
| 608 | PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| 609 | |
| 610 | if (!pjmedia_vid_codec_info_to_id(info, (char*)&codec_id, |
| 611 | sizeof(codec_id))) |
| 612 | return PJ_EINVAL; |
| 613 | |
| 614 | pj_mutex_lock(mgr->mutex); |
| 615 | |
| 616 | /* First, lookup default param in codec desc */ |
| 617 | for (i=0; i < mgr->codec_cnt; ++i) { |
| 618 | if (pj_ansi_stricmp(codec_id, mgr->codec_desc[i].id) == 0) { |
| 619 | codec_desc = &mgr->codec_desc[i]; |
| 620 | break; |
| 621 | } |
| 622 | } |
| 623 | |
| 624 | /* If we found the codec and its default param is set, return it */ |
| 625 | if (codec_desc && codec_desc->def_param) { |
| 626 | pj_memcpy(param, codec_desc->def_param->param, |
| 627 | sizeof(pjmedia_vid_codec_param)); |
| 628 | |
| 629 | pj_mutex_unlock(mgr->mutex); |
| 630 | return PJ_SUCCESS; |
| 631 | } |
| 632 | |
| 633 | /* Otherwise query the default param from codec factory */ |
| 634 | factory = mgr->factory_list.next; |
| 635 | while (factory != &mgr->factory_list) { |
| 636 | |
| 637 | if ( (*factory->op->test_alloc)(factory, info) == PJ_SUCCESS ) { |
| 638 | |
| 639 | status = (*factory->op->default_attr)(factory, info, param); |
| 640 | if (status == PJ_SUCCESS) { |
| 641 | /* Check for invalid max_bps. */ |
| 642 | //if (param->info.max_bps < param->info.avg_bps) |
| 643 | // param->info.max_bps = param->info.avg_bps; |
| 644 | |
| 645 | pj_mutex_unlock(mgr->mutex); |
| 646 | return PJ_SUCCESS; |
| 647 | } |
| 648 | |
| 649 | } |
| 650 | |
| 651 | factory = factory->next; |
| 652 | } |
| 653 | |
| 654 | pj_mutex_unlock(mgr->mutex); |
| 655 | |
| 656 | |
| 657 | return PJMEDIA_CODEC_EUNSUP; |
| 658 | } |
| 659 | |
| 660 | |
| 661 | /* |
| 662 | * Set default codec parameter. |
| 663 | */ |
| 664 | PJ_DEF(pj_status_t) pjmedia_vid_codec_mgr_set_default_param( |
| 665 | pjmedia_vid_codec_mgr *mgr, |
| 666 | const pjmedia_vid_codec_info *info, |
| 667 | const pjmedia_vid_codec_param *param ) |
| 668 | { |
| 669 | unsigned i; |
| 670 | pjmedia_codec_id codec_id; |
| 671 | pjmedia_vid_codec_desc *codec_desc = NULL; |
| 672 | pj_pool_t *pool, *old_pool = NULL; |
| 673 | pjmedia_vid_codec_default_param *p; |
| 674 | |
| 675 | PJ_ASSERT_RETURN(info, PJ_EINVAL); |
| 676 | |
| 677 | if (!mgr) mgr = def_vid_codec_mgr; |
| 678 | PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| 679 | |
| 680 | if (!pjmedia_vid_codec_info_to_id(info, (char*)&codec_id, sizeof(codec_id))) |
| 681 | return PJ_EINVAL; |
| 682 | |
| 683 | pj_mutex_lock(mgr->mutex); |
| 684 | |
| 685 | /* Lookup codec desc */ |
| 686 | for (i=0; i < mgr->codec_cnt; ++i) { |
| 687 | if (pj_ansi_stricmp(codec_id, mgr->codec_desc[i].id) == 0) { |
| 688 | codec_desc = &mgr->codec_desc[i]; |
| 689 | break; |
| 690 | } |
| 691 | } |
| 692 | |
| 693 | /* Codec not found */ |
| 694 | if (!codec_desc) { |
| 695 | pj_mutex_unlock(mgr->mutex); |
| 696 | return PJMEDIA_CODEC_EUNSUP; |
| 697 | } |
| 698 | |
| 699 | /* If codec param is previously set */ |
| 700 | if (codec_desc->def_param) { |
| 701 | pj_assert(codec_desc->def_param->pool); |
| 702 | old_pool = codec_desc->def_param->pool; |
| 703 | codec_desc->def_param = NULL; |
| 704 | } |
| 705 | |
| 706 | /* When param is set to NULL, i.e: setting default codec param to library |
| 707 | * default setting, just return PJ_SUCCESS. |
| 708 | */ |
| 709 | if (NULL == param) { |
| 710 | pj_mutex_unlock(mgr->mutex); |
| 711 | if (old_pool) |
| 712 | pj_pool_release(old_pool); |
| 713 | return PJ_SUCCESS; |
| 714 | } |
| 715 | |
| 716 | /* Create new default codec param instance */ |
| 717 | pool = pj_pool_create(mgr->pf, (char*)codec_id, 256, 256, NULL); |
| 718 | codec_desc->def_param = PJ_POOL_ZALLOC_T(pool, |
| 719 | pjmedia_vid_codec_default_param); |
| 720 | p = codec_desc->def_param; |
| 721 | p->pool = pool; |
| 722 | |
| 723 | /* Update codec default param */ |
| 724 | p->param = pjmedia_vid_codec_param_clone(pool, param); |
| 725 | if (!p->param) |
| 726 | return PJ_EINVAL; |
| 727 | |
| 728 | codec_desc->def_param = p; |
| 729 | |
| 730 | pj_mutex_unlock(mgr->mutex); |
| 731 | |
| 732 | /* Release old pool at the very end, as application tends to apply changes |
| 733 | * to the existing/old codec param fetched using |
| 734 | * pjmedia_vid_codec_mgr_get_default_param() which doesn't do deep clone. |
| 735 | */ |
| 736 | if (old_pool) |
| 737 | pj_pool_release(old_pool); |
| 738 | |
| 739 | return PJ_SUCCESS; |
| 740 | } |
| 741 | |
| 742 | |
| 743 | /* |
| 744 | * Dealloc codec. |
| 745 | */ |
| 746 | PJ_DEF(pj_status_t) |
| 747 | pjmedia_vid_codec_mgr_dealloc_codec(pjmedia_vid_codec_mgr *mgr, |
| 748 | pjmedia_vid_codec *codec) |
| 749 | { |
| 750 | PJ_ASSERT_RETURN(codec, PJ_EINVAL); |
| 751 | |
| 752 | if (!mgr) mgr = def_vid_codec_mgr; |
| 753 | PJ_ASSERT_RETURN(mgr, PJ_EINVAL); |
| 754 | |
| 755 | return (*codec->factory->op->dealloc_codec)(codec->factory, codec); |
| 756 | } |
| 757 | |
| 758 | |
| 759 | #endif /* PJMEDIA_HAS_VIDEO */ |