57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/*
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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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/**
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* @file
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* alsa common handle
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*/
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#ifndef AVFILTER_ALSA_H
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#define AVFILTER_ALSA_H
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#include <libavutil/frame.h>
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#include <libavutil/log.h>
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#include <alsa/asoundlib.h>
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#include <nuttx/audio/audio.h>
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#include <nuttx/config.h>
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typedef struct AlsaHandle {
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snd_pcm_t *h;
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bool draining;
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int frame_size;
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AVFrame *last_frame;
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int periods;
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int period_time;
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enum AVSampleFormat format;
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int poll_available;
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uint32_t sample_rate;
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AVChannelLayout ch_layout;
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} AlsaHandle;
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int alsa_open(AlsaHandle *s, const char *device, snd_pcm_stream_t mode,
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int rate, AVChannelLayout ch_layout, enum AVSampleFormat smpfmt,
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int periods, int period_time);
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int alsa_close(AlsaHandle *s);
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int alsa_write(AlsaHandle *s, void **bufs, int size);
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int alsa_read(AlsaHandle *s, void *buffer, int size);
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int alsa_query_caps(struct AVOptionRanges **pranges, const char *device,
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const char *key, bool playback);
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int alsa_set_parameter(const char *device, const char *parameter);
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#endif /* AVFILTER_ALSA_H */
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