1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
/* $Id$ */
/*
* 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>
#if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0)
#define THIS_FILE "videodev.c"
/* 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
#if PJMEDIA_VIDEO_DEV_HAS_OPENGL
pjmedia_vid_dev_factory* pjmedia_opengl_factory(pj_pool_factory *pf);
#endif
#if PJMEDIA_VIDEO_DEV_HAS_ANDROID
pjmedia_vid_dev_factory* pjmedia_and_factory(pj_pool_factory *pf);
#endif
#define MAX_DRIVERS PJMEDIA_VID_DEV_MAX_DRIVERS
#define MAX_DEVS PJMEDIA_VID_DEV_MAX_DEVS
/* 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;
pjmedia_vid_subsys *vid_subsys = pjmedia_get_vid_subsys();
/* 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_OPENGL
vid_subsys->drv[vid_subsys->drv_cnt++].create = &pjmedia_opengl_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_SDL
vid_subsys->drv[vid_subsys->drv_cnt++].create = &pjmedia_sdl_factory;
#endif
#if PJMEDIA_VIDEO_DEV_HAS_ANDROID
vid_subsys->drv[vid_subsys->drv_cnt++].create = &pjmedia_and_factory;
#endif
#if PJMEDIA_VIDEO_DEV_HAS_CBAR_SRC
/* Better put colorbar at the last, so the default capturer will be
* a real capturer, if any.
*/
vid_subsys->drv[vid_subsys->drv_cnt++].create = &pjmedia_cbar_factory;
#endif
/* Initialize each factory and build the device ID list */
for (i=0; i<vid_subsys->drv_cnt; ++i) {
status = pjmedia_vid_driver_init(i, PJ_FALSE);
if (status != PJ_SUCCESS) {
pjmedia_vid_driver_deinit(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;
pjmedia_vid_subsys *vid_subsys = pjmedia_get_vid_subsys();
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 = pjmedia_vid_driver_init(vid_subsys->drv_cnt, refresh);
if (status == PJ_SUCCESS) {
vid_subsys->drv_cnt++;
} else {
pjmedia_vid_driver_deinit(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;
pjmedia_vid_subsys *vid_subsys = pjmedia_get_vid_subsys();
if (vid_subsys->init_count == 0)
return PJMEDIA_EVID_INIT;
for (i=0; i<vid_subsys->drv_cnt; ++i) {
pjmedia_vid_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;
}
pjmedia_vid_driver_deinit(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)
{
pjmedia_vid_subsys *vid_subsys = pjmedia_get_vid_subsys();
return vid_subsys->pf;
}
/* API: Shutdown the video device subsystem. */
PJ_DEF(pj_status_t) pjmedia_vid_dev_subsys_shutdown(void)
{
unsigned i;
pjmedia_vid_subsys *vid_subsys = pjmedia_get_vid_subsys();
/* 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) {
pjmedia_vid_driver_deinit(i);
}
vid_subsys->pf = NULL;
}
return PJ_SUCCESS;
}
#endif /* PJMEDIA_HAS_VIDEO */
|
