2 * Register all the grabbing devices.
4 * This file is part of FFmpeg.
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.
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.
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
22 #include "libavutil/thread.h"
26 #include "libavformat/internal.h"
30 extern AVInputFormat ff_alsa_demuxer;
31 extern AVOutputFormat ff_alsa_muxer;
32 extern AVInputFormat ff_avfoundation_demuxer;
33 extern AVInputFormat ff_bktr_demuxer;
34 extern AVOutputFormat ff_caca_muxer;
35 extern AVInputFormat ff_decklink_demuxer;
36 extern AVOutputFormat ff_decklink_muxer;
37 extern AVInputFormat ff_libndi_newtek_demuxer;
38 extern AVOutputFormat ff_libndi_newtek_muxer;
39 extern AVInputFormat ff_dshow_demuxer;
40 extern AVInputFormat ff_fbdev_demuxer;
41 extern AVOutputFormat ff_fbdev_muxer;
42 extern AVInputFormat ff_gdigrab_demuxer;
43 extern AVInputFormat ff_iec61883_demuxer;
44 extern AVInputFormat ff_jack_demuxer;
45 extern AVInputFormat ff_kmsgrab_demuxer;
46 extern AVInputFormat ff_lavfi_demuxer;
47 extern AVInputFormat ff_openal_demuxer;
48 extern AVOutputFormat ff_opengl_muxer;
49 extern AVInputFormat ff_oss_demuxer;
50 extern AVOutputFormat ff_oss_muxer;
51 extern AVInputFormat ff_pulse_demuxer;
52 extern AVOutputFormat ff_pulse_muxer;
53 extern AVOutputFormat ff_sdl2_muxer;
54 extern AVInputFormat ff_sndio_demuxer;
55 extern AVOutputFormat ff_sndio_muxer;
56 extern AVInputFormat ff_v4l2_demuxer;
57 extern AVOutputFormat ff_v4l2_muxer;
58 extern AVInputFormat ff_vfwcap_demuxer;
59 extern AVInputFormat ff_xcbgrab_demuxer;
60 extern AVOutputFormat ff_xv_muxer;
62 /* external libraries */
63 extern AVInputFormat ff_libcdio_demuxer;
64 extern AVInputFormat ff_libdc1394_demuxer;
66 #include "libavdevice/outdev_list.c"
67 #include "libavdevice/indev_list.c"
69 const AVOutputFormat *av_outdev_iterate(void **opaque)
71 uintptr_t i = (uintptr_t)*opaque;
72 const AVOutputFormat *f = outdev_list[i];
75 *opaque = (void*)(i + 1);
79 const AVInputFormat *av_indev_iterate(void **opaque)
81 uintptr_t i = (uintptr_t)*opaque;
82 const AVInputFormat *f = indev_list[i];
85 *opaque = (void*)(i + 1);
90 FF_DISABLE_DEPRECATION_WARNINGS
91 static AVOnce av_device_next_init = AV_ONCE_INIT;
93 static void av_device_init_next(void)
95 AVOutputFormat *prevout = NULL, *out;
96 AVInputFormat *previn = NULL, *in;
99 while ((out = (AVOutputFormat*)av_outdev_iterate(&i))) {
106 while ((in = (AVInputFormat*)av_indev_iterate(&i))) {
112 avpriv_register_devices(outdev_list, indev_list);
115 void avdevice_register_all(void)
117 ff_thread_once(&av_device_next_init, av_device_init_next);
120 static void *device_next(void *prev, int output,
121 AVClassCategory c1, AVClassCategory c2)
124 AVClassCategory category = AV_CLASS_CATEGORY_NA;
126 ff_thread_once(&av_device_next_init, av_device_init_next);
128 if (!prev && !(prev = (output ? (void*)outdev_list[0] : (void*)indev_list[0])))
133 if (!(prev = ((AVOutputFormat *)prev)->next))
135 pc = ((AVOutputFormat *)prev)->priv_class;
137 if (!(prev = ((AVInputFormat *)prev)->next))
139 pc = ((AVInputFormat *)prev)->priv_class;
143 category = pc->category;
144 } while (category != c1 && category != c2);
148 AVInputFormat *av_input_audio_device_next(AVInputFormat *d)
150 return device_next(d, 0, AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT,
151 AV_CLASS_CATEGORY_DEVICE_INPUT);
154 AVInputFormat *av_input_video_device_next(AVInputFormat *d)
156 return device_next(d, 0, AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT,
157 AV_CLASS_CATEGORY_DEVICE_INPUT);
160 AVOutputFormat *av_output_audio_device_next(AVOutputFormat *d)
162 return device_next(d, 1, AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT,
163 AV_CLASS_CATEGORY_DEVICE_OUTPUT);
166 AVOutputFormat *av_output_video_device_next(AVOutputFormat *d)
168 return device_next(d, 1, AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
169 AV_CLASS_CATEGORY_DEVICE_OUTPUT);
171 FF_DISABLE_DEPRECATION_WARNINGS