Benny Prijono | c45d951 | 2010-12-10 11:04:30 +0000 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2010 Teluu Inc. (http://www.teluu.com) |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | #include <pjmedia-videodev/videodev_imp.h> |
| 20 | #include <pj/assert.h> |
| 21 | #include <pj/errno.h> |
| 22 | #include <pj/log.h> |
| 23 | #include <pj/pool.h> |
| 24 | #include <pj/string.h> |
| 25 | |
| 26 | #define THIS_FILE "videodev.c" |
| 27 | |
| 28 | #define DEFINE_CAP(name, info) {name, info} |
| 29 | |
| 30 | /* Capability names */ |
| 31 | static struct cap_info |
| 32 | { |
| 33 | const char *name; |
| 34 | const char *info; |
| 35 | } cap_infos[] = |
| 36 | { |
| 37 | DEFINE_CAP("format", "Video format"), |
| 38 | DEFINE_CAP("scale", "Input dimension"), |
| 39 | DEFINE_CAP("window", "Renderer window"), |
| 40 | }; |
| 41 | |
| 42 | |
| 43 | /* |
| 44 | * The device index seen by application and driver is different. |
| 45 | * |
| 46 | * At application level, device index is index to global list of device. |
| 47 | * At driver level, device index is index to device list on that particular |
| 48 | * factory only. |
| 49 | */ |
| 50 | #define MAKE_DEV_ID(f_id, index) (((f_id & 0xFFFF) << 16) | (index & 0xFFFF)) |
| 51 | #define GET_INDEX(dev_id) ((dev_id) & 0xFFFF) |
| 52 | #define GET_FID(dev_id) ((dev_id) >> 16) |
| 53 | #define DEFAULT_DEV_ID 0 |
| 54 | |
| 55 | |
| 56 | /* extern functions to create factories */ |
| 57 | #if PJMEDIA_VIDEO_DEV_HAS_NULL_VIDEO |
| 58 | pjmedia_vid_dev_factory* pjmedia_null_video_factory(pj_pool_factory *pf); |
| 59 | #endif |
| 60 | |
| 61 | #if PJMEDIA_VIDEO_DEV_HAS_DSHOW |
| 62 | pjmedia_vid_dev_factory* pjmedia_dshow_factory(pj_pool_factory *pf); |
| 63 | #endif |
| 64 | |
| 65 | #if PJMEDIA_VIDEO_DEV_HAS_CBAR_SRC |
| 66 | pjmedia_vid_dev_factory* pjmedia_cbar_factory(pj_pool_factory *pf); |
| 67 | #endif |
| 68 | |
| 69 | #if PJMEDIA_VIDEO_DEV_HAS_SDL |
| 70 | pjmedia_vid_dev_factory* pjmedia_sdl_factory(pj_pool_factory *pf); |
| 71 | #endif |
| 72 | |
| 73 | #if PJMEDIA_VIDEO_DEV_HAS_FFMPEG |
| 74 | pjmedia_vid_dev_factory* pjmedia_ffmpeg_factory(pj_pool_factory *pf); |
| 75 | #endif |
| 76 | |
| 77 | #if PJMEDIA_VIDEO_DEV_HAS_V4L2 |
| 78 | pjmedia_vid_dev_factory* pjmedia_v4l2_factory(pj_pool_factory *pf); |
| 79 | #endif |
| 80 | |
Sauw Ming | 6e6c215 | 2010-12-14 13:03:10 +0000 | [diff] [blame^] | 81 | #if PJMEDIA_VIDEO_DEV_HAS_QT |
| 82 | pjmedia_vid_dev_factory* pjmedia_qt_factory(pj_pool_factory *pf); |
| 83 | #endif |
| 84 | |
| 85 | #if PJMEDIA_VIDEO_DEV_HAS_IOS |
| 86 | pjmedia_vid_dev_factory* pjmedia_ios_factory(pj_pool_factory *pf); |
| 87 | #endif |
| 88 | |
Benny Prijono | c45d951 | 2010-12-10 11:04:30 +0000 | [diff] [blame] | 89 | #define MAX_DRIVERS 16 |
| 90 | #define MAX_DEVS 64 |
| 91 | |
| 92 | |
| 93 | /* driver structure */ |
| 94 | struct driver |
| 95 | { |
| 96 | /* Creation function */ |
| 97 | pjmedia_vid_dev_factory_create_func_ptr create; |
| 98 | /* Factory instance */ |
| 99 | pjmedia_vid_dev_factory *f; |
| 100 | char name[32]; /* Driver name */ |
| 101 | unsigned dev_cnt; /* Number of devices */ |
| 102 | unsigned start_idx; /* Start index in global list */ |
| 103 | int cap_dev_idx; /* Default capture device. */ |
| 104 | int rend_dev_idx; /* Default render device */ |
| 105 | }; |
| 106 | |
| 107 | /* The video subsystem */ |
| 108 | static struct vid_subsys |
| 109 | { |
| 110 | unsigned init_count; /* How many times init() is called */ |
| 111 | pj_pool_factory *pf; /* The pool factory. */ |
| 112 | |
| 113 | unsigned drv_cnt; /* Number of drivers. */ |
| 114 | struct driver drv[MAX_DRIVERS]; /* Array of drivers. */ |
| 115 | |
| 116 | unsigned dev_cnt; /* Total number of devices. */ |
| 117 | pj_uint32_t dev_list[MAX_DEVS];/* Array of device IDs. */ |
| 118 | |
| 119 | } vid_subsys; |
| 120 | |
| 121 | /* API: get capability name/info */ |
| 122 | PJ_DEF(const char*) pjmedia_vid_dev_cap_name(pjmedia_vid_dev_cap cap, |
| 123 | const char **p_desc) |
| 124 | { |
| 125 | const char *desc; |
| 126 | unsigned i; |
| 127 | |
| 128 | if (p_desc==NULL) p_desc = &desc; |
| 129 | |
| 130 | for (i=0; i<PJ_ARRAY_SIZE(cap_infos); ++i) { |
| 131 | if ((1 << i)==cap) |
| 132 | break; |
| 133 | } |
| 134 | |
| 135 | if (i==32) { |
| 136 | *p_desc = "??"; |
| 137 | return "??"; |
| 138 | } |
| 139 | |
| 140 | *p_desc = cap_infos[i].info; |
| 141 | return cap_infos[i].name; |
| 142 | } |
| 143 | |
| 144 | static pj_status_t get_cap_pointer(const pjmedia_vid_param *param, |
| 145 | pjmedia_vid_dev_cap cap, |
| 146 | void **ptr, |
| 147 | unsigned *size) |
| 148 | { |
| 149 | #define FIELD_INFO(name) *ptr = (void*)¶m->name; \ |
| 150 | *size = sizeof(param->name) |
| 151 | |
| 152 | switch (cap) { |
| 153 | case PJMEDIA_VID_DEV_CAP_FORMAT: |
| 154 | FIELD_INFO(fmt); |
| 155 | break; |
| 156 | case PJMEDIA_VID_DEV_CAP_INPUT_SCALE: |
| 157 | FIELD_INFO(disp_size); |
| 158 | break; |
| 159 | case PJMEDIA_VID_DEV_CAP_OUTPUT_WINDOW: |
| 160 | FIELD_INFO(window); |
| 161 | break; |
| 162 | default: |
| 163 | return PJMEDIA_EVID_INVCAP; |
| 164 | } |
| 165 | |
| 166 | #undef FIELD_INFO |
| 167 | |
| 168 | return PJ_SUCCESS; |
| 169 | } |
| 170 | |
| 171 | /* API: set cap value to param */ |
| 172 | PJ_DEF(pj_status_t) pjmedia_vid_param_set_cap( pjmedia_vid_param *param, |
| 173 | pjmedia_vid_dev_cap cap, |
| 174 | const void *pval) |
| 175 | { |
| 176 | void *cap_ptr; |
| 177 | unsigned cap_size; |
| 178 | pj_status_t status; |
| 179 | |
| 180 | status = get_cap_pointer(param, cap, &cap_ptr, &cap_size); |
| 181 | if (status != PJ_SUCCESS) |
| 182 | return status; |
| 183 | |
| 184 | pj_memcpy(cap_ptr, pval, cap_size); |
| 185 | param->flags |= cap; |
| 186 | |
| 187 | return PJ_SUCCESS; |
| 188 | } |
| 189 | |
| 190 | /* API: get cap value from param */ |
| 191 | PJ_DEF(pj_status_t) pjmedia_vid_param_get_cap( const pjmedia_vid_param *param, |
| 192 | pjmedia_vid_dev_cap cap, |
| 193 | void *pval) |
| 194 | { |
| 195 | void *cap_ptr; |
| 196 | unsigned cap_size; |
| 197 | pj_status_t status; |
| 198 | |
| 199 | status = get_cap_pointer(param, cap, &cap_ptr, &cap_size); |
| 200 | if (status != PJ_SUCCESS) |
| 201 | return status; |
| 202 | |
| 203 | if ((param->flags & cap) == 0) { |
| 204 | pj_bzero(cap_ptr, cap_size); |
| 205 | return PJMEDIA_EVID_INVCAP; |
| 206 | } |
| 207 | |
| 208 | pj_memcpy(pval, cap_ptr, cap_size); |
| 209 | return PJ_SUCCESS; |
| 210 | } |
| 211 | |
| 212 | /* Internal: init driver */ |
| 213 | static pj_status_t init_driver(unsigned drv_idx) |
| 214 | { |
| 215 | struct driver *drv = &vid_subsys.drv[drv_idx]; |
| 216 | pjmedia_vid_dev_factory *f; |
| 217 | unsigned i, dev_cnt; |
| 218 | pj_status_t status; |
| 219 | |
| 220 | /* Create the factory */ |
| 221 | f = (*drv->create)(vid_subsys.pf); |
| 222 | if (!f) |
| 223 | return PJ_EUNKNOWN; |
| 224 | |
| 225 | /* Call factory->init() */ |
| 226 | status = f->op->init(f); |
| 227 | if (status != PJ_SUCCESS) { |
| 228 | f->op->destroy(f); |
| 229 | return status; |
| 230 | } |
| 231 | |
| 232 | /* Get number of devices */ |
| 233 | dev_cnt = f->op->get_dev_count(f); |
| 234 | if (dev_cnt + vid_subsys.dev_cnt > MAX_DEVS) { |
| 235 | PJ_LOG(4,(THIS_FILE, "%d device(s) cannot be registered because" |
| 236 | " there are too many devices", |
| 237 | vid_subsys.dev_cnt + dev_cnt - MAX_DEVS)); |
| 238 | dev_cnt = MAX_DEVS - vid_subsys.dev_cnt; |
| 239 | } |
| 240 | |
| 241 | /* enabling this will cause pjsua-lib initialization to fail when there |
| 242 | * is no video device installed in the system, even when pjsua has been |
| 243 | * run with --null-video |
| 244 | * |
| 245 | if (dev_cnt == 0) { |
| 246 | f->op->destroy(f); |
| 247 | return PJMEDIA_EVID_NODEV; |
| 248 | } |
| 249 | */ |
| 250 | |
| 251 | /* Fill in default devices */ |
| 252 | drv->rend_dev_idx = drv->cap_dev_idx = -1; |
| 253 | for (i=0; i<dev_cnt; ++i) { |
| 254 | pjmedia_vid_dev_info info; |
| 255 | |
| 256 | status = f->op->get_dev_info(f, i, &info); |
| 257 | if (status != PJ_SUCCESS) { |
| 258 | f->op->destroy(f); |
| 259 | return status; |
| 260 | } |
| 261 | |
| 262 | if (drv->name[0]=='\0') { |
| 263 | /* Set driver name */ |
| 264 | pj_ansi_strncpy(drv->name, info.driver, sizeof(drv->name)); |
| 265 | drv->name[sizeof(drv->name)-1] = '\0'; |
| 266 | } |
| 267 | |
| 268 | if (drv->rend_dev_idx < 0 && (info.dir & PJMEDIA_DIR_RENDER)) { |
| 269 | /* Set default render device */ |
| 270 | drv->rend_dev_idx = i; |
| 271 | } |
| 272 | if (drv->cap_dev_idx < 0 && (info.dir & PJMEDIA_DIR_CAPTURE)) { |
| 273 | /* Set default capture device */ |
| 274 | drv->cap_dev_idx = i; |
| 275 | } |
| 276 | |
| 277 | if (drv->rend_dev_idx >= 0 && drv->cap_dev_idx >= 0) { |
| 278 | /* Done. */ |
| 279 | break; |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | /* Register the factory */ |
| 284 | drv->f = f; |
| 285 | drv->f->sys.drv_idx = drv_idx; |
| 286 | drv->start_idx = vid_subsys.dev_cnt; |
| 287 | drv->dev_cnt = dev_cnt; |
| 288 | |
| 289 | /* Register devices to global list */ |
| 290 | for (i=0; i<dev_cnt; ++i) { |
| 291 | vid_subsys.dev_list[vid_subsys.dev_cnt++] = MAKE_DEV_ID(drv_idx, i); |
| 292 | } |
| 293 | |
| 294 | return PJ_SUCCESS; |
| 295 | } |
| 296 | |
| 297 | /* Internal: deinit driver */ |
| 298 | static void deinit_driver(unsigned drv_idx) |
| 299 | { |
| 300 | struct driver *drv = &vid_subsys.drv[drv_idx]; |
| 301 | |
| 302 | if (drv->f) { |
| 303 | drv->f->op->destroy(drv->f); |
| 304 | drv->f = NULL; |
| 305 | } |
| 306 | |
| 307 | drv->dev_cnt = 0; |
| 308 | drv->rend_dev_idx = drv->cap_dev_idx = -1; |
| 309 | } |
| 310 | |
| 311 | /* API: Initialize the video subsystem. */ |
| 312 | PJ_DEF(pj_status_t) pjmedia_vid_subsys_init(pj_pool_factory *pf) |
| 313 | { |
| 314 | unsigned i; |
| 315 | pj_status_t status = PJ_SUCCESS; |
| 316 | |
| 317 | /* Allow init() to be called multiple times as long as there is matching |
| 318 | * number of shutdown(). |
| 319 | */ |
| 320 | if (vid_subsys.init_count++ != 0) { |
| 321 | return PJ_SUCCESS; |
| 322 | } |
| 323 | |
| 324 | /* Register error subsystem */ |
| 325 | pj_register_strerror(PJMEDIA_VIDEODEV_ERRNO_START, |
| 326 | PJ_ERRNO_SPACE_SIZE, |
| 327 | &pjmedia_videodev_strerror); |
| 328 | |
| 329 | /* Init */ |
| 330 | vid_subsys.pf = pf; |
| 331 | vid_subsys.drv_cnt = 0; |
| 332 | vid_subsys.dev_cnt = 0; |
| 333 | |
| 334 | /* Register creation functions */ |
| 335 | #if PJMEDIA_VIDEO_DEV_HAS_V4L2 |
| 336 | vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_v4l2_factory; |
| 337 | #endif |
Sauw Ming | 6e6c215 | 2010-12-14 13:03:10 +0000 | [diff] [blame^] | 338 | #if PJMEDIA_VIDEO_DEV_HAS_QT |
| 339 | vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_qt_factory; |
| 340 | #endif |
| 341 | #if PJMEDIA_VIDEO_DEV_HAS_IOS |
| 342 | vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_ios_factory; |
| 343 | #endif |
Benny Prijono | c45d951 | 2010-12-10 11:04:30 +0000 | [diff] [blame] | 344 | #if PJMEDIA_VIDEO_DEV_HAS_DSHOW |
| 345 | vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_dshow_factory; |
| 346 | #endif |
| 347 | #if PJMEDIA_VIDEO_DEV_HAS_FFMPEG |
| 348 | vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_ffmpeg_factory; |
| 349 | #endif |
| 350 | #if PJMEDIA_VIDEO_DEV_HAS_CBAR_SRC |
| 351 | vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_cbar_factory; |
| 352 | #endif |
| 353 | #if PJMEDIA_VIDEO_DEV_HAS_SDL |
| 354 | vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_sdl_factory; |
| 355 | #endif |
| 356 | |
| 357 | /* Initialize each factory and build the device ID list */ |
| 358 | for (i=0; i<vid_subsys.drv_cnt; ++i) { |
| 359 | status = init_driver(i); |
| 360 | if (status != PJ_SUCCESS) { |
| 361 | deinit_driver(i); |
| 362 | continue; |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | return vid_subsys.dev_cnt ? PJ_SUCCESS : status; |
| 367 | } |
| 368 | |
| 369 | /* API: register an video device factory to the video subsystem. */ |
| 370 | PJ_DEF(pj_status_t) |
| 371 | pjmedia_vid_register_factory(pjmedia_vid_dev_factory_create_func_ptr adf) |
| 372 | { |
| 373 | pj_status_t status; |
| 374 | |
| 375 | if (vid_subsys.init_count == 0) |
| 376 | return PJMEDIA_EVID_INIT; |
| 377 | |
| 378 | vid_subsys.drv[vid_subsys.drv_cnt].create = adf; |
| 379 | status = init_driver(vid_subsys.drv_cnt); |
| 380 | if (status == PJ_SUCCESS) { |
| 381 | vid_subsys.drv_cnt++; |
| 382 | } else { |
| 383 | deinit_driver(vid_subsys.drv_cnt); |
| 384 | } |
| 385 | |
| 386 | return status; |
| 387 | } |
| 388 | |
| 389 | /* API: unregister an video device factory from the video subsystem. */ |
| 390 | PJ_DEF(pj_status_t) |
| 391 | pjmedia_vid_unregister_factory(pjmedia_vid_dev_factory_create_func_ptr adf) |
| 392 | { |
| 393 | unsigned i, j; |
| 394 | |
| 395 | if (vid_subsys.init_count == 0) |
| 396 | return PJMEDIA_EVID_INIT; |
| 397 | |
| 398 | for (i=0; i<vid_subsys.drv_cnt; ++i) { |
| 399 | struct driver *drv = &vid_subsys.drv[i]; |
| 400 | |
| 401 | if (drv->create == adf) { |
| 402 | for (j = drv->start_idx; j < drv->start_idx + drv->dev_cnt; j++) |
| 403 | { |
| 404 | vid_subsys.dev_list[j] = (pj_uint32_t)PJMEDIA_VID_INVALID_DEV; |
| 405 | } |
| 406 | |
| 407 | deinit_driver(i); |
| 408 | pj_bzero(drv, sizeof(*drv)); |
| 409 | return PJ_SUCCESS; |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | return PJMEDIA_EVID_ERR; |
| 414 | } |
| 415 | |
| 416 | /* API: get the pool factory registered to the video subsystem. */ |
| 417 | PJ_DEF(pj_pool_factory*) pjmedia_vid_subsys_get_pool_factory(void) |
| 418 | { |
| 419 | return vid_subsys.pf; |
| 420 | } |
| 421 | |
| 422 | /* API: Shutdown the video subsystem. */ |
| 423 | PJ_DEF(pj_status_t) pjmedia_vid_subsys_shutdown(void) |
| 424 | { |
| 425 | unsigned i; |
| 426 | |
| 427 | /* Allow shutdown() to be called multiple times as long as there is matching |
| 428 | * number of init(). |
| 429 | */ |
| 430 | if (vid_subsys.init_count == 0) { |
| 431 | return PJ_SUCCESS; |
| 432 | } |
| 433 | --vid_subsys.init_count; |
| 434 | |
| 435 | for (i=0; i<vid_subsys.drv_cnt; ++i) { |
| 436 | deinit_driver(i); |
| 437 | } |
| 438 | |
| 439 | vid_subsys.pf = NULL; |
| 440 | return PJ_SUCCESS; |
| 441 | } |
| 442 | |
| 443 | /* API: Get the number of video devices installed in the system. */ |
| 444 | PJ_DEF(unsigned) pjmedia_vid_dev_count(void) |
| 445 | { |
| 446 | return vid_subsys.dev_cnt; |
| 447 | } |
| 448 | |
| 449 | /* Internal: convert local index to global device index */ |
| 450 | static pj_status_t make_global_index(unsigned drv_idx, |
| 451 | pjmedia_vid_dev_index *id) |
| 452 | { |
| 453 | if (*id < 0) { |
| 454 | return PJ_SUCCESS; |
| 455 | } |
| 456 | |
| 457 | /* Check that factory still exists */ |
| 458 | PJ_ASSERT_RETURN(vid_subsys.drv[drv_idx].f, PJ_EBUG); |
| 459 | |
| 460 | /* Check that device index is valid */ |
| 461 | PJ_ASSERT_RETURN(*id>=0 && *id<(int)vid_subsys.drv[drv_idx].dev_cnt, |
| 462 | PJ_EBUG); |
| 463 | |
| 464 | *id += vid_subsys.drv[drv_idx].start_idx; |
| 465 | return PJ_SUCCESS; |
| 466 | } |
| 467 | |
| 468 | /* Internal: lookup device id */ |
| 469 | static pj_status_t lookup_dev(pjmedia_vid_dev_index id, |
| 470 | pjmedia_vid_dev_factory **p_f, |
| 471 | unsigned *p_local_index) |
| 472 | { |
| 473 | int f_id, index; |
| 474 | |
| 475 | if (id < 0) { |
| 476 | unsigned i; |
| 477 | |
| 478 | if (id == PJMEDIA_VID_INVALID_DEV) |
| 479 | return PJMEDIA_EVID_INVDEV; |
| 480 | |
| 481 | for (i=0; i<vid_subsys.drv_cnt; ++i) { |
| 482 | struct driver *drv = &vid_subsys.drv[i]; |
| 483 | if (id==PJMEDIA_VID_DEFAULT_CAPTURE_DEV && |
| 484 | drv->cap_dev_idx >= 0) |
| 485 | { |
| 486 | id = drv->cap_dev_idx; |
| 487 | make_global_index(i, &id); |
| 488 | break; |
| 489 | } else if (id==PJMEDIA_VID_DEFAULT_RENDER_DEV && |
| 490 | drv->rend_dev_idx >= 0) |
| 491 | { |
| 492 | id = drv->rend_dev_idx; |
| 493 | make_global_index(i, &id); |
| 494 | break; |
| 495 | } |
| 496 | } |
| 497 | |
| 498 | if (id < 0) { |
| 499 | return PJMEDIA_EVID_NODEFDEV; |
| 500 | } |
| 501 | } |
| 502 | |
| 503 | f_id = GET_FID(vid_subsys.dev_list[id]); |
| 504 | index = GET_INDEX(vid_subsys.dev_list[id]); |
| 505 | |
| 506 | if (f_id < 0 || f_id >= (int)vid_subsys.drv_cnt) |
| 507 | return PJMEDIA_EVID_INVDEV; |
| 508 | |
| 509 | if (index < 0 || index >= (int)vid_subsys.drv[f_id].dev_cnt) |
| 510 | return PJMEDIA_EVID_INVDEV; |
| 511 | |
| 512 | *p_f = vid_subsys.drv[f_id].f; |
| 513 | *p_local_index = (unsigned)index; |
| 514 | |
| 515 | return PJ_SUCCESS; |
| 516 | |
| 517 | } |
| 518 | |
| 519 | /* API: Get device information. */ |
| 520 | PJ_DEF(pj_status_t) pjmedia_vid_dev_get_info(pjmedia_vid_dev_index id, |
| 521 | pjmedia_vid_dev_info *info) |
| 522 | { |
| 523 | pjmedia_vid_dev_factory *f; |
| 524 | unsigned index; |
| 525 | pj_status_t status; |
| 526 | |
| 527 | PJ_ASSERT_RETURN(info && id!=PJMEDIA_VID_INVALID_DEV, PJ_EINVAL); |
| 528 | PJ_ASSERT_RETURN(vid_subsys.pf, PJMEDIA_EVID_INIT); |
| 529 | |
| 530 | status = lookup_dev(id, &f, &index); |
| 531 | if (status != PJ_SUCCESS) |
| 532 | return status; |
| 533 | |
| 534 | return f->op->get_dev_info(f, index, info); |
| 535 | } |
| 536 | |
| 537 | /* API: find device */ |
| 538 | PJ_DEF(pj_status_t) pjmedia_vid_dev_lookup( const char *drv_name, |
| 539 | const char *dev_name, |
| 540 | pjmedia_vid_dev_index *id) |
| 541 | { |
| 542 | pjmedia_vid_dev_factory *f = NULL; |
| 543 | unsigned drv_idx, dev_idx; |
| 544 | |
| 545 | PJ_ASSERT_RETURN(drv_name && dev_name && id, PJ_EINVAL); |
| 546 | PJ_ASSERT_RETURN(vid_subsys.pf, PJMEDIA_EVID_INIT); |
| 547 | |
| 548 | for (drv_idx=0; drv_idx<vid_subsys.drv_cnt; ++drv_idx) { |
| 549 | if (!pj_ansi_stricmp(drv_name, vid_subsys.drv[drv_idx].name)) { |
| 550 | f = vid_subsys.drv[drv_idx].f; |
| 551 | break; |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | if (!f) |
| 556 | return PJ_ENOTFOUND; |
| 557 | |
| 558 | for (dev_idx=0; dev_idx<vid_subsys.drv[drv_idx].dev_cnt; ++dev_idx) { |
| 559 | pjmedia_vid_dev_info info; |
| 560 | pj_status_t status; |
| 561 | |
| 562 | status = f->op->get_dev_info(f, dev_idx, &info); |
| 563 | if (status != PJ_SUCCESS) |
| 564 | return status; |
| 565 | |
| 566 | if (!pj_ansi_stricmp(dev_name, info.name)) |
| 567 | break; |
| 568 | } |
| 569 | |
| 570 | if (dev_idx==vid_subsys.drv[drv_idx].dev_cnt) |
| 571 | return PJ_ENOTFOUND; |
| 572 | |
| 573 | *id = dev_idx; |
| 574 | make_global_index(drv_idx, id); |
| 575 | |
| 576 | return PJ_SUCCESS; |
| 577 | } |
| 578 | |
| 579 | /* API: Initialize the video device parameters with default values for the |
| 580 | * specified device. |
| 581 | */ |
| 582 | PJ_DEF(pj_status_t) pjmedia_vid_dev_default_param(pj_pool_t *pool, |
| 583 | pjmedia_vid_dev_index id, |
| 584 | pjmedia_vid_param *param) |
| 585 | { |
| 586 | pjmedia_vid_dev_factory *f; |
| 587 | unsigned index; |
| 588 | pj_status_t status; |
| 589 | |
| 590 | PJ_ASSERT_RETURN(param && id!=PJMEDIA_VID_INVALID_DEV, PJ_EINVAL); |
| 591 | PJ_ASSERT_RETURN(vid_subsys.pf, PJMEDIA_EVID_INIT); |
| 592 | |
| 593 | status = lookup_dev(id, &f, &index); |
| 594 | if (status != PJ_SUCCESS) |
| 595 | return status; |
| 596 | |
| 597 | status = f->op->default_param(pool, f, index, param); |
| 598 | if (status != PJ_SUCCESS) |
| 599 | return status; |
| 600 | |
| 601 | /* Normalize device IDs */ |
| 602 | make_global_index(f->sys.drv_idx, ¶m->cap_id); |
| 603 | make_global_index(f->sys.drv_idx, ¶m->rend_id); |
| 604 | |
| 605 | return PJ_SUCCESS; |
| 606 | } |
| 607 | |
| 608 | /* API: Open video stream object using the specified parameters. */ |
| 609 | PJ_DEF(pj_status_t) pjmedia_vid_stream_create(const pjmedia_vid_param *prm, |
| 610 | const pjmedia_vid_cb *cb, |
| 611 | void *user_data, |
| 612 | pjmedia_vid_stream **p_vid_strm) |
| 613 | { |
| 614 | pjmedia_vid_dev_factory *cap_f=NULL, *rend_f=NULL, *f=NULL; |
| 615 | pjmedia_vid_param param; |
| 616 | pj_status_t status; |
| 617 | |
| 618 | PJ_ASSERT_RETURN(prm && prm->dir && p_vid_strm, PJ_EINVAL); |
| 619 | PJ_ASSERT_RETURN(vid_subsys.pf, PJMEDIA_EVID_INIT); |
| 620 | PJ_ASSERT_RETURN(prm->dir==PJMEDIA_DIR_CAPTURE || |
| 621 | prm->dir==PJMEDIA_DIR_RENDER || |
| 622 | prm->dir==PJMEDIA_DIR_CAPTURE_RENDER, |
| 623 | PJ_EINVAL); |
| 624 | |
| 625 | /* Must make copy of param because we're changing device ID */ |
| 626 | pj_memcpy(¶m, prm, sizeof(param)); |
| 627 | |
| 628 | /* Normalize cap_id */ |
| 629 | if (param.dir & PJMEDIA_DIR_CAPTURE) { |
| 630 | unsigned index; |
| 631 | |
| 632 | if (param.cap_id < 0) |
| 633 | param.cap_id = PJMEDIA_VID_DEFAULT_CAPTURE_DEV; |
| 634 | |
| 635 | status = lookup_dev(param.cap_id, &cap_f, &index); |
| 636 | if (status != PJ_SUCCESS) |
| 637 | return status; |
| 638 | |
| 639 | param.cap_id = index; |
| 640 | f = cap_f; |
| 641 | } |
| 642 | |
| 643 | /* Normalize rend_id */ |
| 644 | if (param.dir & PJMEDIA_DIR_RENDER) { |
| 645 | unsigned index; |
| 646 | |
| 647 | if (param.rend_id < 0) |
| 648 | param.rend_id = PJMEDIA_VID_DEFAULT_RENDER_DEV; |
| 649 | |
| 650 | status = lookup_dev(param.rend_id, &rend_f, &index); |
| 651 | if (status != PJ_SUCCESS) |
| 652 | return status; |
| 653 | |
| 654 | param.rend_id = index; |
| 655 | f = rend_f; |
| 656 | } |
| 657 | |
| 658 | PJ_ASSERT_RETURN(f != NULL, PJ_EBUG); |
| 659 | |
| 660 | /* For now, cap_id and rend_id must belong to the same factory */ |
| 661 | PJ_ASSERT_RETURN((param.dir != PJMEDIA_DIR_CAPTURE_RENDER) || |
| 662 | (cap_f == rend_f), |
| 663 | PJMEDIA_EVID_INVDEV); |
| 664 | |
| 665 | /* Create the stream */ |
| 666 | status = f->op->create_stream(f, ¶m, cb, |
| 667 | user_data, p_vid_strm); |
| 668 | if (status != PJ_SUCCESS) |
| 669 | return status; |
| 670 | |
| 671 | /* Assign factory id to the stream */ |
| 672 | (*p_vid_strm)->sys.drv_idx = f->sys.drv_idx; |
| 673 | return PJ_SUCCESS; |
| 674 | } |
| 675 | |
| 676 | /* API: Get the running parameters for the specified video stream. */ |
| 677 | PJ_DEF(pj_status_t) pjmedia_vid_stream_get_param(pjmedia_vid_stream *strm, |
| 678 | pjmedia_vid_param *param) |
| 679 | { |
| 680 | pj_status_t status; |
| 681 | |
| 682 | PJ_ASSERT_RETURN(strm && param, PJ_EINVAL); |
| 683 | PJ_ASSERT_RETURN(vid_subsys.pf, PJMEDIA_EVID_INIT); |
| 684 | |
| 685 | status = strm->op->get_param(strm, param); |
| 686 | if (status != PJ_SUCCESS) |
| 687 | return status; |
| 688 | |
| 689 | /* Normalize device id's */ |
| 690 | make_global_index(strm->sys.drv_idx, ¶m->cap_id); |
| 691 | make_global_index(strm->sys.drv_idx, ¶m->rend_id); |
| 692 | |
| 693 | return PJ_SUCCESS; |
| 694 | } |
| 695 | |
| 696 | /* API: Get the value of a specific capability of the video stream. */ |
| 697 | PJ_DEF(pj_status_t) pjmedia_vid_stream_get_cap(pjmedia_vid_stream *strm, |
| 698 | pjmedia_vid_dev_cap cap, |
| 699 | void *value) |
| 700 | { |
| 701 | return strm->op->get_cap(strm, cap, value); |
| 702 | } |
| 703 | |
| 704 | /* API: Set the value of a specific capability of the video stream. */ |
| 705 | PJ_DEF(pj_status_t) pjmedia_vid_stream_set_cap(pjmedia_vid_stream *strm, |
| 706 | pjmedia_vid_dev_cap cap, |
| 707 | const void *value) |
| 708 | { |
| 709 | return strm->op->set_cap(strm, cap, value); |
| 710 | } |
| 711 | |
| 712 | /* API: Start the stream. */ |
| 713 | PJ_DEF(pj_status_t) pjmedia_vid_stream_start(pjmedia_vid_stream *strm) |
| 714 | { |
| 715 | return strm->op->start(strm); |
| 716 | } |
| 717 | |
| 718 | PJ_DEF(pj_status_t) pjmedia_vid_stream_get_frame(pjmedia_vid_stream *strm, |
| 719 | pjmedia_frame *frame) |
| 720 | { |
| 721 | pj_assert(strm->op->get_frame); |
| 722 | return strm->op->get_frame(strm, frame); |
| 723 | } |
| 724 | |
| 725 | PJ_DEF(pj_status_t) pjmedia_vid_stream_put_frame(pjmedia_vid_stream *strm, |
| 726 | const pjmedia_frame *frame) |
| 727 | { |
| 728 | pj_assert(strm->op->put_frame); |
| 729 | return strm->op->put_frame(strm, frame); |
| 730 | } |
| 731 | |
| 732 | /* API: Stop the stream. */ |
| 733 | PJ_DEF(pj_status_t) pjmedia_vid_stream_stop(pjmedia_vid_stream *strm) |
| 734 | { |
| 735 | return strm->op->stop(strm); |
| 736 | } |
| 737 | |
| 738 | /* API: Destroy the stream. */ |
| 739 | PJ_DEF(pj_status_t) pjmedia_vid_stream_destroy(pjmedia_vid_stream *strm) |
| 740 | { |
| 741 | return strm->op->destroy(strm); |
| 742 | } |