| /* $Id: videodev.c 4016 2012-04-04 05:05:50Z bennylp $ */ |
| /* |
| * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| #include <pjmedia-videodev/videodev_imp.h> |
| #include <pj/assert.h> |
| #include <pj/errno.h> |
| #include <pj/log.h> |
| #include <pj/pool.h> |
| #include <pj/string.h> |
| |
| |
| #if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0) |
| |
| |
| #define THIS_FILE "videodev.c" |
| |
| #define DEFINE_CAP(name, info) {name, info} |
| |
| /* Capability names */ |
| static struct cap_info |
| { |
| const char *name; |
| const char *info; |
| } cap_infos[] = |
| { |
| DEFINE_CAP("format", "Video format"), |
| DEFINE_CAP("scale", "Input dimension"), |
| DEFINE_CAP("window", "Window handle"), |
| DEFINE_CAP("resize", "Renderer resize"), |
| DEFINE_CAP("position", "Renderer position"), |
| DEFINE_CAP("hide", "Renderer hide"), |
| DEFINE_CAP("preview", "Input preview"), |
| DEFINE_CAP("orientation", "Video orientation"), |
| DEFINE_CAP("switch", "Switch device"), |
| DEFINE_CAP("wndflags", "Window flags") |
| }; |
| |
| |
| /* |
| * The device index seen by application and driver is different. |
| * |
| * At application level, device index is index to global list of device. |
| * At driver level, device index is index to device list on that particular |
| * factory only. |
| */ |
| #define MAKE_DEV_ID(f_id, index) (((f_id & 0xFFFF) << 16) | (index & 0xFFFF)) |
| #define GET_INDEX(dev_id) ((dev_id) & 0xFFFF) |
| #define GET_FID(dev_id) ((dev_id) >> 16) |
| #define DEFAULT_DEV_ID 0 |
| |
| |
| /* extern functions to create factories */ |
| #if PJMEDIA_VIDEO_DEV_HAS_NULL_VIDEO |
| pjmedia_vid_dev_factory* pjmedia_null_video_factory(pj_pool_factory *pf); |
| #endif |
| |
| #if PJMEDIA_VIDEO_DEV_HAS_DSHOW |
| pjmedia_vid_dev_factory* pjmedia_dshow_factory(pj_pool_factory *pf); |
| #endif |
| |
| #if PJMEDIA_VIDEO_DEV_HAS_CBAR_SRC |
| pjmedia_vid_dev_factory* pjmedia_cbar_factory(pj_pool_factory *pf); |
| #endif |
| |
| #if PJMEDIA_VIDEO_DEV_HAS_SDL |
| pjmedia_vid_dev_factory* pjmedia_sdl_factory(pj_pool_factory *pf); |
| #endif |
| |
| #if PJMEDIA_VIDEO_DEV_HAS_FFMPEG |
| pjmedia_vid_dev_factory* pjmedia_ffmpeg_factory(pj_pool_factory *pf); |
| #endif |
| |
| #if PJMEDIA_VIDEO_DEV_HAS_V4L2 |
| pjmedia_vid_dev_factory* pjmedia_v4l2_factory(pj_pool_factory *pf); |
| #endif |
| |
| #if PJMEDIA_VIDEO_DEV_HAS_QT |
| pjmedia_vid_dev_factory* pjmedia_qt_factory(pj_pool_factory *pf); |
| #endif |
| |
| #if PJMEDIA_VIDEO_DEV_HAS_IOS |
| pjmedia_vid_dev_factory* pjmedia_ios_factory(pj_pool_factory *pf); |
| #endif |
| |
| #define MAX_DRIVERS 16 |
| #define MAX_DEVS 64 |
| |
| |
| /* driver structure */ |
| struct driver |
| { |
| /* Creation function */ |
| pjmedia_vid_dev_factory_create_func_ptr create; |
| /* Factory instance */ |
| pjmedia_vid_dev_factory *f; |
| char name[32]; /* Driver name */ |
| unsigned dev_cnt; /* Number of devices */ |
| unsigned start_idx; /* Start index in global list */ |
| int cap_dev_idx; /* Default capture device. */ |
| int rend_dev_idx; /* Default render device */ |
| }; |
| |
| /* The video device subsystem */ |
| static struct vid_subsys |
| { |
| unsigned init_count; /* How many times init() is called */ |
| pj_pool_factory *pf; /* The pool factory. */ |
| |
| unsigned drv_cnt; /* Number of drivers. */ |
| struct driver drv[MAX_DRIVERS]; /* Array of drivers. */ |
| |
| unsigned dev_cnt; /* Total number of devices. */ |
| pj_uint32_t dev_list[MAX_DEVS];/* Array of device IDs. */ |
| |
| } vid_subsys; |
| |
| /* API: get capability name/info */ |
| PJ_DEF(const char*) pjmedia_vid_dev_cap_name(pjmedia_vid_dev_cap cap, |
| const char **p_desc) |
| { |
| const char *desc; |
| unsigned i; |
| |
| if (p_desc==NULL) p_desc = &desc; |
| |
| for (i=0; i<PJ_ARRAY_SIZE(cap_infos); ++i) { |
| if ((1 << i)==cap) |
| break; |
| } |
| |
| if (i==PJ_ARRAY_SIZE(cap_infos)) { |
| *p_desc = "??"; |
| return "??"; |
| } |
| |
| *p_desc = cap_infos[i].info; |
| return cap_infos[i].name; |
| } |
| |
| static pj_status_t get_cap_pointer(const pjmedia_vid_dev_param *param, |
| pjmedia_vid_dev_cap cap, |
| void **ptr, |
| unsigned *size) |
| { |
| #define FIELD_INFO(name) *ptr = (void*)¶m->name; \ |
| *size = sizeof(param->name) |
| |
| switch (cap) { |
| case PJMEDIA_VID_DEV_CAP_FORMAT: |
| FIELD_INFO(fmt); |
| break; |
| case PJMEDIA_VID_DEV_CAP_INPUT_SCALE: |
| FIELD_INFO(disp_size); |
| break; |
| case PJMEDIA_VID_DEV_CAP_OUTPUT_WINDOW: |
| FIELD_INFO(window); |
| break; |
| case PJMEDIA_VID_DEV_CAP_OUTPUT_RESIZE: |
| FIELD_INFO(disp_size); |
| break; |
| case PJMEDIA_VID_DEV_CAP_OUTPUT_POSITION: |
| FIELD_INFO(window_pos); |
| break; |
| case PJMEDIA_VID_DEV_CAP_OUTPUT_HIDE: |
| FIELD_INFO(window_hide); |
| break; |
| case PJMEDIA_VID_DEV_CAP_INPUT_PREVIEW: |
| FIELD_INFO(native_preview); |
| break; |
| case PJMEDIA_VID_DEV_CAP_ORIENTATION: |
| FIELD_INFO(orient); |
| break; |
| /* The PJMEDIA_VID_DEV_CAP_SWITCH does not have an entry in the |
| * param (it doesn't make sense to open a stream and tell it |
| * to switch immediately). |
| */ |
| case PJMEDIA_VID_DEV_CAP_OUTPUT_WINDOW_FLAGS: |
| FIELD_INFO(window_flags); |
| break; |
| default: |
| return PJMEDIA_EVID_INVCAP; |
| } |
| |
| #undef FIELD_INFO |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* API: set cap value to param */ |
| PJ_DEF(pj_status_t) |
| pjmedia_vid_dev_param_set_cap( pjmedia_vid_dev_param *param, |
| pjmedia_vid_dev_cap cap, |
| const void *pval) |
| { |
| void *cap_ptr; |
| unsigned cap_size; |
| pj_status_t status; |
| |
| status = get_cap_pointer(param, cap, &cap_ptr, &cap_size); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| pj_memcpy(cap_ptr, pval, cap_size); |
| param->flags |= cap; |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* API: get cap value from param */ |
| PJ_DEF(pj_status_t) |
| pjmedia_vid_dev_param_get_cap( const pjmedia_vid_dev_param *param, |
| pjmedia_vid_dev_cap cap, |
| void *pval) |
| { |
| void *cap_ptr; |
| unsigned cap_size; |
| pj_status_t status; |
| |
| status = get_cap_pointer(param, cap, &cap_ptr, &cap_size); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| if ((param->flags & cap) == 0) { |
| pj_bzero(cap_ptr, cap_size); |
| return PJMEDIA_EVID_INVCAP; |
| } |
| |
| pj_memcpy(pval, cap_ptr, cap_size); |
| return PJ_SUCCESS; |
| } |
| |
| /* Internal: init driver */ |
| static pj_status_t init_driver(unsigned drv_idx, pj_bool_t refresh) |
| { |
| struct driver *drv = &vid_subsys.drv[drv_idx]; |
| pjmedia_vid_dev_factory *f; |
| unsigned i, dev_cnt; |
| pj_status_t status; |
| |
| if (!refresh) { |
| /* Create the factory */ |
| f = (*drv->create)(vid_subsys.pf); |
| if (!f) |
| return PJ_EUNKNOWN; |
| |
| /* Call factory->init() */ |
| status = f->op->init(f); |
| if (status != PJ_SUCCESS) { |
| f->op->destroy(f); |
| return status; |
| } |
| } else { |
| f = drv->f; |
| } |
| |
| /* Get number of devices */ |
| dev_cnt = f->op->get_dev_count(f); |
| if (dev_cnt + vid_subsys.dev_cnt > MAX_DEVS) { |
| PJ_LOG(4,(THIS_FILE, "%d device(s) cannot be registered because" |
| " there are too many devices", |
| vid_subsys.dev_cnt + dev_cnt - MAX_DEVS)); |
| dev_cnt = MAX_DEVS - vid_subsys.dev_cnt; |
| } |
| |
| /* enabling this will cause pjsua-lib initialization to fail when there |
| * is no video device installed in the system, even when pjsua has been |
| * run with --null-video |
| * |
| if (dev_cnt == 0) { |
| f->op->destroy(f); |
| return PJMEDIA_EVID_NODEV; |
| } |
| */ |
| |
| /* Fill in default devices */ |
| drv->rend_dev_idx = drv->cap_dev_idx = -1; |
| for (i=0; i<dev_cnt; ++i) { |
| pjmedia_vid_dev_info info; |
| |
| status = f->op->get_dev_info(f, i, &info); |
| if (status != PJ_SUCCESS) { |
| f->op->destroy(f); |
| return status; |
| } |
| |
| if (drv->name[0]=='\0') { |
| /* Set driver name */ |
| pj_ansi_strncpy(drv->name, info.driver, sizeof(drv->name)); |
| drv->name[sizeof(drv->name)-1] = '\0'; |
| } |
| |
| if (drv->rend_dev_idx < 0 && (info.dir & PJMEDIA_DIR_RENDER)) { |
| /* Set default render device */ |
| drv->rend_dev_idx = i; |
| } |
| if (drv->cap_dev_idx < 0 && (info.dir & PJMEDIA_DIR_CAPTURE)) { |
| /* Set default capture device */ |
| drv->cap_dev_idx = i; |
| } |
| |
| if (drv->rend_dev_idx >= 0 && drv->cap_dev_idx >= 0) { |
| /* Done. */ |
| break; |
| } |
| } |
| |
| /* Register the factory */ |
| drv->f = f; |
| drv->f->sys.drv_idx = drv_idx; |
| drv->start_idx = vid_subsys.dev_cnt; |
| drv->dev_cnt = dev_cnt; |
| |
| /* Register devices to global list */ |
| for (i=0; i<dev_cnt; ++i) { |
| vid_subsys.dev_list[vid_subsys.dev_cnt++] = MAKE_DEV_ID(drv_idx, i); |
| } |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* Internal: deinit driver */ |
| static void deinit_driver(unsigned drv_idx) |
| { |
| struct driver *drv = &vid_subsys.drv[drv_idx]; |
| |
| if (drv->f) { |
| drv->f->op->destroy(drv->f); |
| drv->f = NULL; |
| } |
| |
| drv->dev_cnt = 0; |
| drv->rend_dev_idx = drv->cap_dev_idx = -1; |
| } |
| |
| /* API: Initialize the video device subsystem. */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_subsys_init(pj_pool_factory *pf) |
| { |
| unsigned i; |
| pj_status_t status = PJ_SUCCESS; |
| |
| /* Allow init() to be called multiple times as long as there is matching |
| * number of shutdown(). |
| */ |
| if (vid_subsys.init_count++ != 0) { |
| return PJ_SUCCESS; |
| } |
| |
| /* Register error subsystem */ |
| pj_register_strerror(PJMEDIA_VIDEODEV_ERRNO_START, |
| PJ_ERRNO_SPACE_SIZE, |
| &pjmedia_videodev_strerror); |
| |
| /* Init */ |
| vid_subsys.pf = pf; |
| vid_subsys.drv_cnt = 0; |
| vid_subsys.dev_cnt = 0; |
| |
| /* Register creation functions */ |
| #if PJMEDIA_VIDEO_DEV_HAS_V4L2 |
| vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_v4l2_factory; |
| #endif |
| #if PJMEDIA_VIDEO_DEV_HAS_QT |
| vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_qt_factory; |
| #endif |
| #if PJMEDIA_VIDEO_DEV_HAS_IOS |
| vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_ios_factory; |
| #endif |
| #if PJMEDIA_VIDEO_DEV_HAS_DSHOW |
| vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_dshow_factory; |
| #endif |
| #if PJMEDIA_VIDEO_DEV_HAS_FFMPEG |
| vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_ffmpeg_factory; |
| #endif |
| #if PJMEDIA_VIDEO_DEV_HAS_CBAR_SRC |
| vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_cbar_factory; |
| #endif |
| #if PJMEDIA_VIDEO_DEV_HAS_SDL |
| vid_subsys.drv[vid_subsys.drv_cnt++].create = &pjmedia_sdl_factory; |
| #endif |
| |
| /* Initialize each factory and build the device ID list */ |
| for (i=0; i<vid_subsys.drv_cnt; ++i) { |
| status = init_driver(i, PJ_FALSE); |
| if (status != PJ_SUCCESS) { |
| deinit_driver(i); |
| continue; |
| } |
| } |
| |
| return vid_subsys.dev_cnt ? PJ_SUCCESS : status; |
| } |
| |
| /* API: register a video device factory to the video device subsystem. */ |
| PJ_DEF(pj_status_t) |
| pjmedia_vid_register_factory(pjmedia_vid_dev_factory_create_func_ptr adf, |
| pjmedia_vid_dev_factory *factory) |
| { |
| pj_bool_t refresh = PJ_FALSE; |
| pj_status_t status; |
| |
| if (vid_subsys.init_count == 0) |
| return PJMEDIA_EVID_INIT; |
| |
| vid_subsys.drv[vid_subsys.drv_cnt].create = adf; |
| vid_subsys.drv[vid_subsys.drv_cnt].f = factory; |
| |
| if (factory) { |
| /* Call factory->init() */ |
| status = factory->op->init(factory); |
| if (status != PJ_SUCCESS) { |
| factory->op->destroy(factory); |
| return status; |
| } |
| refresh = PJ_TRUE; |
| } |
| |
| status = init_driver(vid_subsys.drv_cnt, refresh); |
| if (status == PJ_SUCCESS) { |
| vid_subsys.drv_cnt++; |
| } else { |
| deinit_driver(vid_subsys.drv_cnt); |
| } |
| |
| return status; |
| } |
| |
| /* API: unregister a video device factory from the video device subsystem. */ |
| PJ_DEF(pj_status_t) |
| pjmedia_vid_unregister_factory(pjmedia_vid_dev_factory_create_func_ptr adf, |
| pjmedia_vid_dev_factory *factory) |
| { |
| unsigned i, j; |
| |
| if (vid_subsys.init_count == 0) |
| return PJMEDIA_EVID_INIT; |
| |
| for (i=0; i<vid_subsys.drv_cnt; ++i) { |
| struct driver *drv = &vid_subsys.drv[i]; |
| |
| if ((factory && drv->f==factory) || (adf && drv->create == adf)) { |
| for (j = drv->start_idx; j < drv->start_idx + drv->dev_cnt; j++) |
| { |
| vid_subsys.dev_list[j] = (pj_uint32_t)PJMEDIA_VID_INVALID_DEV; |
| } |
| |
| deinit_driver(i); |
| pj_bzero(drv, sizeof(*drv)); |
| return PJ_SUCCESS; |
| } |
| } |
| |
| return PJMEDIA_EVID_ERR; |
| } |
| |
| /* API: get the pool factory registered to the video device subsystem. */ |
| PJ_DEF(pj_pool_factory*) pjmedia_vid_dev_subsys_get_pool_factory(void) |
| { |
| return vid_subsys.pf; |
| } |
| |
| /* API: Shutdown the video device subsystem. */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_subsys_shutdown(void) |
| { |
| unsigned i; |
| |
| /* Allow shutdown() to be called multiple times as long as there is |
| * matching number of init(). |
| */ |
| if (vid_subsys.init_count == 0) { |
| return PJ_SUCCESS; |
| } |
| --vid_subsys.init_count; |
| |
| if (vid_subsys.init_count == 0) { |
| for (i=0; i<vid_subsys.drv_cnt; ++i) { |
| deinit_driver(i); |
| } |
| |
| vid_subsys.pf = NULL; |
| } |
| return PJ_SUCCESS; |
| } |
| |
| /* API: Refresh the list of video devices installed in the system. */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_refresh(void) |
| { |
| unsigned i; |
| |
| vid_subsys.dev_cnt = 0; |
| for (i=0; i<vid_subsys.drv_cnt; ++i) { |
| struct driver *drv = &vid_subsys.drv[i]; |
| |
| if (drv->f && drv->f->op->refresh) { |
| pj_status_t status = drv->f->op->refresh(drv->f); |
| if (status != PJ_SUCCESS) { |
| PJ_PERROR(4, (THIS_FILE, status, "Unable to refresh device " |
| "list for %s", drv->name)); |
| } |
| } |
| init_driver(i, PJ_TRUE); |
| } |
| return PJ_SUCCESS; |
| } |
| |
| /* API: Get the number of video devices installed in the system. */ |
| PJ_DEF(unsigned) pjmedia_vid_dev_count(void) |
| { |
| return vid_subsys.dev_cnt; |
| } |
| |
| /* Internal: convert local index to global device index */ |
| static pj_status_t make_global_index(unsigned drv_idx, |
| pjmedia_vid_dev_index *id) |
| { |
| if (*id < 0) { |
| return PJ_SUCCESS; |
| } |
| |
| /* Check that factory still exists */ |
| PJ_ASSERT_RETURN(vid_subsys.drv[drv_idx].f, PJ_EBUG); |
| |
| /* Check that device index is valid */ |
| PJ_ASSERT_RETURN(*id>=0 && *id<(int)vid_subsys.drv[drv_idx].dev_cnt, |
| PJ_EBUG); |
| |
| *id += vid_subsys.drv[drv_idx].start_idx; |
| return PJ_SUCCESS; |
| } |
| |
| /* Internal: lookup device id */ |
| static pj_status_t lookup_dev(pjmedia_vid_dev_index id, |
| pjmedia_vid_dev_factory **p_f, |
| unsigned *p_local_index) |
| { |
| int f_id, index; |
| |
| if (id < 0) { |
| unsigned i; |
| |
| if (id <= PJMEDIA_VID_INVALID_DEV) |
| return PJMEDIA_EVID_INVDEV; |
| |
| for (i=0; i<vid_subsys.drv_cnt; ++i) { |
| struct driver *drv = &vid_subsys.drv[i]; |
| if (id==PJMEDIA_VID_DEFAULT_CAPTURE_DEV && |
| drv->cap_dev_idx >= 0) |
| { |
| id = drv->cap_dev_idx; |
| make_global_index(i, &id); |
| break; |
| } else if (id==PJMEDIA_VID_DEFAULT_RENDER_DEV && |
| drv->rend_dev_idx >= 0) |
| { |
| id = drv->rend_dev_idx; |
| make_global_index(i, &id); |
| break; |
| } |
| } |
| |
| if (id < 0) { |
| return PJMEDIA_EVID_NODEFDEV; |
| } |
| } |
| |
| f_id = GET_FID(vid_subsys.dev_list[id]); |
| index = GET_INDEX(vid_subsys.dev_list[id]); |
| |
| if (f_id < 0 || f_id >= (int)vid_subsys.drv_cnt) |
| return PJMEDIA_EVID_INVDEV; |
| |
| if (index < 0 || index >= (int)vid_subsys.drv[f_id].dev_cnt) |
| return PJMEDIA_EVID_INVDEV; |
| |
| *p_f = vid_subsys.drv[f_id].f; |
| *p_local_index = (unsigned)index; |
| |
| return PJ_SUCCESS; |
| |
| } |
| |
| /* API: lookup device id */ |
| PJ_DEF(pj_status_t) |
| pjmedia_vid_dev_get_local_index(pjmedia_vid_dev_index id, |
| pjmedia_vid_dev_factory **p_f, |
| unsigned *p_local_index) |
| { |
| return lookup_dev(id, p_f, p_local_index); |
| } |
| |
| /* API: from factory and local index, get global index */ |
| PJ_DEF(pj_status_t) |
| pjmedia_vid_dev_get_global_index(const pjmedia_vid_dev_factory *f, |
| unsigned local_idx, |
| pjmedia_vid_dev_index *pid) |
| { |
| PJ_ASSERT_RETURN(f->sys.drv_idx >= 0 && f->sys.drv_idx < MAX_DRIVERS, |
| PJ_EINVALIDOP); |
| *pid = local_idx; |
| return make_global_index(f->sys.drv_idx, pid); |
| } |
| |
| /* API: Get device information. */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_get_info(pjmedia_vid_dev_index id, |
| pjmedia_vid_dev_info *info) |
| { |
| pjmedia_vid_dev_factory *f; |
| unsigned index; |
| pj_status_t status; |
| |
| PJ_ASSERT_RETURN(info, PJ_EINVAL); |
| PJ_ASSERT_RETURN(vid_subsys.pf, PJMEDIA_EVID_INIT); |
| |
| if (id <= PJMEDIA_VID_INVALID_DEV) |
| return PJMEDIA_EVID_INVDEV; |
| |
| status = lookup_dev(id, &f, &index); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| status = f->op->get_dev_info(f, index, info); |
| |
| /* Make sure device ID is the real ID (not PJMEDIA_VID_DEFAULT_*_DEV) */ |
| info->id = index; |
| make_global_index(f->sys.drv_idx, &info->id); |
| |
| return status; |
| } |
| |
| /* API: find device */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_lookup( const char *drv_name, |
| const char *dev_name, |
| pjmedia_vid_dev_index *id) |
| { |
| pjmedia_vid_dev_factory *f = NULL; |
| unsigned drv_idx, dev_idx; |
| |
| PJ_ASSERT_RETURN(drv_name && dev_name && id, PJ_EINVAL); |
| PJ_ASSERT_RETURN(vid_subsys.pf, PJMEDIA_EVID_INIT); |
| |
| for (drv_idx=0; drv_idx<vid_subsys.drv_cnt; ++drv_idx) { |
| if (!pj_ansi_stricmp(drv_name, vid_subsys.drv[drv_idx].name)) |
| { |
| f = vid_subsys.drv[drv_idx].f; |
| break; |
| } |
| } |
| |
| if (!f) |
| return PJ_ENOTFOUND; |
| |
| for (dev_idx=0; dev_idx<vid_subsys.drv[drv_idx].dev_cnt; ++dev_idx) |
| { |
| pjmedia_vid_dev_info info; |
| pj_status_t status; |
| |
| status = f->op->get_dev_info(f, dev_idx, &info); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| if (!pj_ansi_stricmp(dev_name, info.name)) |
| break; |
| } |
| |
| if (dev_idx==vid_subsys.drv[drv_idx].dev_cnt) |
| return PJ_ENOTFOUND; |
| |
| *id = dev_idx; |
| make_global_index(drv_idx, id); |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* API: Initialize the video device parameters with default values for the |
| * specified device. |
| */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_default_param(pj_pool_t *pool, |
| pjmedia_vid_dev_index id, |
| pjmedia_vid_dev_param *param) |
| { |
| pjmedia_vid_dev_factory *f; |
| unsigned index; |
| pj_status_t status; |
| |
| PJ_ASSERT_RETURN(param, PJ_EINVAL); |
| PJ_ASSERT_RETURN(vid_subsys.pf, PJMEDIA_EVID_INIT); |
| |
| if (id <= PJMEDIA_VID_INVALID_DEV) |
| return PJMEDIA_EVID_INVDEV; |
| |
| status = lookup_dev(id, &f, &index); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| status = f->op->default_param(pool, f, index, param); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| /* Normalize device IDs */ |
| make_global_index(f->sys.drv_idx, ¶m->cap_id); |
| make_global_index(f->sys.drv_idx, ¶m->rend_id); |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* API: Open video stream object using the specified parameters. */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_stream_create( |
| pjmedia_vid_dev_param *prm, |
| const pjmedia_vid_dev_cb *cb, |
| void *user_data, |
| pjmedia_vid_dev_stream **p_vid_strm) |
| { |
| pjmedia_vid_dev_factory *cap_f=NULL, *rend_f=NULL, *f=NULL; |
| pj_status_t status; |
| |
| PJ_ASSERT_RETURN(prm && prm->dir && p_vid_strm, PJ_EINVAL); |
| PJ_ASSERT_RETURN(vid_subsys.pf, PJMEDIA_EVID_INIT); |
| PJ_ASSERT_RETURN(prm->dir==PJMEDIA_DIR_CAPTURE || |
| prm->dir==PJMEDIA_DIR_RENDER || |
| prm->dir==PJMEDIA_DIR_CAPTURE_RENDER, |
| PJ_EINVAL); |
| |
| /* Normalize cap_id */ |
| if (prm->dir & PJMEDIA_DIR_CAPTURE) { |
| unsigned index; |
| |
| if (prm->cap_id < 0) |
| prm->cap_id = PJMEDIA_VID_DEFAULT_CAPTURE_DEV; |
| |
| status = lookup_dev(prm->cap_id, &cap_f, &index); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| prm->cap_id = index; |
| f = cap_f; |
| } |
| |
| /* Normalize rend_id */ |
| if (prm->dir & PJMEDIA_DIR_RENDER) { |
| unsigned index; |
| |
| if (prm->rend_id < 0) |
| prm->rend_id = PJMEDIA_VID_DEFAULT_RENDER_DEV; |
| |
| status = lookup_dev(prm->rend_id, &rend_f, &index); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| prm->rend_id = index; |
| f = rend_f; |
| } |
| |
| PJ_ASSERT_RETURN(f != NULL, PJ_EBUG); |
| |
| /* For now, cap_id and rend_id must belong to the same factory */ |
| PJ_ASSERT_RETURN((prm->dir != PJMEDIA_DIR_CAPTURE_RENDER) || |
| (cap_f == rend_f), |
| PJMEDIA_EVID_INVDEV); |
| |
| /* Create the stream */ |
| status = f->op->create_stream(f, prm, cb, |
| user_data, p_vid_strm); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| /* Assign factory id to the stream */ |
| (*p_vid_strm)->sys.drv_idx = f->sys.drv_idx; |
| return PJ_SUCCESS; |
| } |
| |
| /* API: Get the running parameters for the specified video stream. */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_stream_get_param( |
| pjmedia_vid_dev_stream *strm, |
| pjmedia_vid_dev_param *param) |
| { |
| pj_status_t status; |
| |
| PJ_ASSERT_RETURN(strm && param, PJ_EINVAL); |
| PJ_ASSERT_RETURN(vid_subsys.pf, PJMEDIA_EVID_INIT); |
| |
| status = strm->op->get_param(strm, param); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| /* Normalize device id's */ |
| make_global_index(strm->sys.drv_idx, ¶m->cap_id); |
| make_global_index(strm->sys.drv_idx, ¶m->rend_id); |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* API: Get the value of a specific capability of the video stream. */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_stream_get_cap( |
| pjmedia_vid_dev_stream *strm, |
| pjmedia_vid_dev_cap cap, |
| void *value) |
| { |
| return strm->op->get_cap(strm, cap, value); |
| } |
| |
| /* API: Set the value of a specific capability of the video stream. */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_stream_set_cap( |
| pjmedia_vid_dev_stream *strm, |
| pjmedia_vid_dev_cap cap, |
| const void *value) |
| { |
| return strm->op->set_cap(strm, cap, value); |
| } |
| |
| /* API: Start the stream. */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_stream_start(pjmedia_vid_dev_stream *strm) |
| { |
| pj_status_t status; |
| |
| if (pjmedia_vid_dev_stream_is_running(strm)) |
| return PJ_SUCCESS; |
| |
| status = strm->op->start(strm); |
| if (status == PJ_SUCCESS) |
| strm->sys.is_running = PJ_TRUE; |
| return status; |
| } |
| |
| /* API: has it been started? */ |
| PJ_DEF(pj_bool_t) |
| pjmedia_vid_dev_stream_is_running(pjmedia_vid_dev_stream *strm) |
| { |
| return strm->sys.is_running; |
| } |
| |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_stream_get_frame( |
| pjmedia_vid_dev_stream *strm, |
| pjmedia_frame *frame) |
| { |
| pj_assert(strm->op->get_frame); |
| return strm->op->get_frame(strm, frame); |
| } |
| |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_stream_put_frame( |
| pjmedia_vid_dev_stream *strm, |
| const pjmedia_frame *frame) |
| { |
| pj_assert(strm->op->put_frame); |
| return strm->op->put_frame(strm, frame); |
| } |
| |
| /* API: Stop the stream. */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_stream_stop(pjmedia_vid_dev_stream *strm) |
| { |
| strm->sys.is_running = PJ_FALSE; |
| return strm->op->stop(strm); |
| } |
| |
| /* API: Destroy the stream. */ |
| PJ_DEF(pj_status_t) pjmedia_vid_dev_stream_destroy( |
| pjmedia_vid_dev_stream *strm) |
| { |
| strm->sys.is_running = PJ_FALSE; |
| return strm->op->destroy(strm); |
| } |
| |
| |
| #endif /* PJMEDIA_HAS_VIDEO */ |