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71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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* Copyright (C) 2007, Gilles Casse <gcasse@oralux.org>
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* Copyright (C) 2015 Reece H. Dunn
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* based on AudioIO.cc (Audacity-1.2.4b) and wavegen.cpp
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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 WAVE_H
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#define WAVE_H
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#ifndef PLATFORM_DOS
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#include "stdint.h"
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#endif
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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extern int option_device_number;
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extern int wave_init(int samplerate);
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extern void *wave_open(const char *the_api);
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extern size_t wave_write(void *theHandler, char *theMono16BitsWaveBuffer, size_t theSize);
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extern int wave_close(void *theHandler);
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extern void wave_flush(void *theHandler);
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extern int wave_is_busy(void *theHandler);
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extern void wave_terminate();
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extern uint32_t wave_get_read_position(void *theHandler);
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extern uint32_t wave_get_write_position(void *theHandler);
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// Supply the remaining time in ms before the sample is played
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// (or 0 if the event has been already played).
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// sample: sample identifier
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// time: supplied value in ms
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//
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// return 0 if ok or -1 otherwise (stream not opened).
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extern int wave_get_remaining_time(uint32_t sample, uint32_t *time);
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// set the callback which informs if the output is still enabled.
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// Helpful if a new sample is waiting for free space whereas sound must be stopped.
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typedef int (t_wave_callback)(void);
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extern void wave_set_callback_is_output_enabled(t_wave_callback *cb);
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// general functions
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extern void clock_gettime2(struct timespec *ts);
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extern void add_time_in_ms(struct timespec *ts, int time_in_ms);
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// for tests
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extern void *wave_test_get_write_buffer();
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#ifdef __cplusplus
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}
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#endif
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#endif
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