68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*
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* simpleaudio_internal.h
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*
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* Copyright (C) 2011-2012 Kamal Mostafa <kamal@whence.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SIMPLEAUDIO_INTERNAL_H
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#define SIMPLEAUDIO_INTERNAL_H
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#include "simpleaudio.h"
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struct simpleaudio_backend;
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typedef struct simpleaudio_backend simpleaudio_backend;
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struct simpleaudio {
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const struct simpleaudio_backend *backend;
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sa_format_t format;
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unsigned int rate;
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unsigned int channels;
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void * backend_handle;
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unsigned int samplesize;
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unsigned int backend_framesize;
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float rxnoise; // only for the sndfile backend
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};
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struct simpleaudio_backend {
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int /* boolean 'ok' value */
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(*simpleaudio_open_stream)(
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simpleaudio * sa,
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const char *backend_device,
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sa_direction_t sa_stream_direction,
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sa_format_t sa_format,
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unsigned int rate, unsigned int channels,
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char *app_name, char *stream_name );
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ssize_t
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(*simpleaudio_read)( simpleaudio *sa, void *buf, size_t nframes );
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ssize_t
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(*simpleaudio_write)( simpleaudio *sa, void *buf, size_t nframes );
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void
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(*simpleaudio_close)( simpleaudio *sa );
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};
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extern const struct simpleaudio_backend simpleaudio_backend_benchmark;
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extern const struct simpleaudio_backend simpleaudio_backend_sndfile;
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extern const struct simpleaudio_backend simpleaudio_backend_alsa;
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extern const struct simpleaudio_backend simpleaudio_backend_pulseaudio;
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#endif
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