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https://github.com/FFmpeg/FFmpeg.git
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9fb293cfd8
Using AVOnce as a stack variable makes no sense as the state is lost when the function exits. This fixes repeated calls to av(filter/device)_register_all
80 lines
3.1 KiB
C
80 lines
3.1 KiB
C
/*
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* Register all the grabbing devices.
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include "libavutil/thread.h"
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#include "avdevice.h"
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#define REGISTER_OUTDEV(X, x) \
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{ \
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extern AVOutputFormat ff_##x##_muxer; \
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if (CONFIG_##X##_OUTDEV) \
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av_register_output_format(&ff_##x##_muxer); \
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}
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#define REGISTER_INDEV(X, x) \
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{ \
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extern AVInputFormat ff_##x##_demuxer; \
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if (CONFIG_##X##_INDEV) \
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av_register_input_format(&ff_##x##_demuxer); \
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}
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#define REGISTER_INOUTDEV(X, x) REGISTER_OUTDEV(X, x); REGISTER_INDEV(X, x)
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static void register_all(void)
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{
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/* devices */
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REGISTER_INOUTDEV(ALSA, alsa);
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REGISTER_INDEV (AVFOUNDATION, avfoundation);
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REGISTER_INDEV (BKTR, bktr);
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REGISTER_OUTDEV (CACA, caca);
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REGISTER_INOUTDEV(DECKLINK, decklink);
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REGISTER_INDEV (DSHOW, dshow);
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REGISTER_INDEV (DV1394, dv1394);
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REGISTER_INOUTDEV(FBDEV, fbdev);
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REGISTER_INDEV (GDIGRAB, gdigrab);
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REGISTER_INDEV (IEC61883, iec61883);
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REGISTER_INDEV (JACK, jack);
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REGISTER_INDEV (LAVFI, lavfi);
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REGISTER_INDEV (OPENAL, openal);
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REGISTER_OUTDEV (OPENGL, opengl);
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REGISTER_INOUTDEV(OSS, oss);
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REGISTER_INOUTDEV(PULSE, pulse);
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REGISTER_INDEV (QTKIT, qtkit);
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REGISTER_OUTDEV (SDL2, sdl2);
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REGISTER_INOUTDEV(SNDIO, sndio);
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REGISTER_INOUTDEV(V4L2, v4l2);
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// REGISTER_INDEV (V4L, v4l
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REGISTER_INDEV (VFWCAP, vfwcap);
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REGISTER_INDEV (XCBGRAB, xcbgrab);
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REGISTER_OUTDEV (XV, xv);
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/* external libraries */
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REGISTER_INDEV (LIBCDIO, libcdio);
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REGISTER_INDEV (LIBDC1394, libdc1394);
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}
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void avdevice_register_all(void)
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{
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static AVOnce control = AV_ONCE_INIT;
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ff_thread_once(&control, register_all);
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}
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