libavdevice/alldevices.c

   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 #include "avformat.h"
  21 #include "avdevice.h"
  22
  23 #define REGISTER_MUXER(X,x) { \
  24           extern AVOutputFormat x##_muxer; \
  25           if(ENABLE_##X##_MUXER)   av_register_output_format(&x##_muxer); }
  26 #define REGISTER_DEMUXER(X,x) { \
  27           extern AVInputFormat x##_demuxer; \
  28           if(ENABLE_##X##_DEMUXER) av_register_input_format(&x##_demuxer); }
  29 #define REGISTER_MUXDEMUX(X,x)  REGISTER_MUXER(X,x); REGISTER_DEMUXER(X,x)
  30
  31 void avdevice_register_all(void)
  32 {
  33     static int initialized;
  34
  35     if (initialized)
  36         return;
  37     initialized = 1;
  38
  39     /* devices */
  40     REGISTER_MUXDEMUX (AUDIO_BEOS, audio_beos);
  41     REGISTER_DEMUXER  (BKTR, bktr);
  42     REGISTER_DEMUXER  (DV1394, dv1394);
  43     REGISTER_MUXDEMUX (OSS, oss);
  44     REGISTER_DEMUXER  (V4L2, v4l2);
  45     REGISTER_DEMUXER  (V4L, v4l);
  46     REGISTER_DEMUXER  (VFWCAP, vfwcap);
  47     REGISTER_DEMUXER  (X11_GRAB_DEVICE, x11_grab_device);
  48
  49     /* external libraries */
  50     REGISTER_DEMUXER  (LIBDC1394, libdc1394);
  51 }