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alldevices.c
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1 /*
2  * Register all the grabbing devices.
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg 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 GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "config.h"
22 #include "libavutil/thread.h"
23 #include "avdevice.h"
24 
25 #define REGISTER_OUTDEV(X, x) \
26  { \
27  extern AVOutputFormat ff_##x##_muxer; \
28  if (CONFIG_##X##_OUTDEV) \
29  av_register_output_format(&ff_##x##_muxer); \
30  }
31 
32 #define REGISTER_INDEV(X, x) \
33  { \
34  extern AVInputFormat ff_##x##_demuxer; \
35  if (CONFIG_##X##_INDEV) \
36  av_register_input_format(&ff_##x##_demuxer); \
37  }
38 
39 #define REGISTER_INOUTDEV(X, x) REGISTER_OUTDEV(X, x); REGISTER_INDEV(X, x)
40 
41 static void register_all(void)
42 {
43  /* devices */
44  REGISTER_INOUTDEV(ALSA, alsa);
45  REGISTER_INDEV (AVFOUNDATION, avfoundation);
46  REGISTER_INDEV (BKTR, bktr);
47  REGISTER_OUTDEV (CACA, caca);
48  REGISTER_INOUTDEV(DECKLINK, decklink);
49  REGISTER_INOUTDEV(LIBNDI_NEWTEK, libndi_newtek);
50  REGISTER_INDEV (DSHOW, dshow);
51  REGISTER_INOUTDEV(FBDEV, fbdev);
52  REGISTER_INDEV (GDIGRAB, gdigrab);
53  REGISTER_INDEV (IEC61883, iec61883);
54  REGISTER_INDEV (JACK, jack);
55  REGISTER_INDEV (KMSGRAB, kmsgrab);
56  REGISTER_INDEV (LAVFI, lavfi);
57  REGISTER_INDEV (OPENAL, openal);
58  REGISTER_OUTDEV (OPENGL, opengl);
59  REGISTER_INOUTDEV(OSS, oss);
60  REGISTER_INOUTDEV(PULSE, pulse);
61  REGISTER_OUTDEV (SDL2, sdl2);
62  REGISTER_INOUTDEV(SNDIO, sndio);
63  REGISTER_INOUTDEV(V4L2, v4l2);
64  REGISTER_INDEV (VFWCAP, vfwcap);
65  REGISTER_INDEV (XCBGRAB, xcbgrab);
66  REGISTER_OUTDEV (XV, xv);
67 
68  /* external libraries */
69  REGISTER_INDEV (LIBCDIO, libcdio);
70  REGISTER_INDEV (LIBDC1394, libdc1394);
71 }
72 
74 {
75  static AVOnce control = AV_ONCE_INIT;
76 
77  ff_thread_once(&control, register_all);
78 }
#define AVOnce
Definition: thread.h:157
Main libavdevice API header.
#define REGISTER_OUTDEV(X, x)
Definition: alldevices.c:25
GDI Device Demuxer context.
Definition: gdigrab.c:40
#define AV_ONCE_INIT
Definition: thread.h:158
static void register_all(void)
Definition: alldevices.c:41
void avdevice_register_all(void)
Initialize libavdevice and register all the input and output devices.
Definition: alldevices.c:73
#define REGISTER_INDEV(X, x)
Definition: alldevices.c:32
#define REGISTER_INOUTDEV(X, x)
Definition: alldevices.c:39
static int ff_thread_once(char *control, void(*routine)(void))
Definition: thread.h:160