libavdevice/oss_audio.h
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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
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
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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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * 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
  */
 
 #ifndef AVDEVICE_OSS_AUDIO_H
 #define AVDEVICE_OSS_AUDIO_H
 
 #include "libavcodec/avcodec.h"
 
 #include "libavformat/avformat.h"
 
 #define OSS_AUDIO_BLOCK_SIZE 4096
 
 typedef struct OSSAudioData {
     AVClass *class;
     int fd;
     int sample_rate;
     int channels;
     int frame_size; /* in bytes ! */
     enum AVCodecID codec_id;
     unsigned int flip_left : 1;
     uint8_t buffer[OSS_AUDIO_BLOCK_SIZE];
     int buffer_ptr;
 } OSSAudioData;
 
 int ff_oss_audio_open(AVFormatContext *s1, int is_output,
                       const char *audio_device);
 
 int ff_oss_audio_close(OSSAudioData *s);
 
 #endif /* AVDEVICE_OSS_AUDIO_H */