libavdevice/alldevices.c

   1 /*
   2  * Register all the grabbing devices.
   3  *
   4  * This file is part of Libav.
   5  *
   6  * Libav 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  * Libav 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 Libav; 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 "libavformat/avformat.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 void avdevice_register_all(void)
  42 {
  43     static int initialized;
  44
  45     if (initialized)
  46         return;
  47     initialized = 1;
  48
  49     /* devices */
  50     REGISTER_INOUTDEV(ALSA,             alsa);
  51     REGISTER_INDEV   (BKTR,             bktr);
  52     REGISTER_INDEV   (DV1394,           dv1394);
  53     REGISTER_INDEV   (FBDEV,            fbdev);
  54     REGISTER_INDEV   (JACK,             jack);
  55     REGISTER_INOUTDEV(OSS,              oss);
  56     REGISTER_INDEV   (PULSE,            pulse);
  57     REGISTER_INOUTDEV(SNDIO,            sndio);
  58     REGISTER_INDEV   (V4L2,             v4l2);
  59     REGISTER_INDEV   (VFWCAP,           vfwcap);
  60     REGISTER_INDEV   (X11GRAB,          x11grab);
  61
  62     /* external libraries */
  63     REGISTER_INDEV   (LIBCDIO,          libcdio);
  64     REGISTER_INDEV   (LIBDC1394,        libdc1394);
  65 }