rtt-f030/bsp/qemu-vexpress-a9/drivers/audio/audio_device.h

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2018-05-29 10:55:42 +08:00
/*
* File : audio_device.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2017, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2018-05-26 RT-Thread the first version
*/
#ifndef AUDIO_DEVICE_H__
#define AUDIO_DEVICE_H__
enum AUDIO_DEVICE_STATE
{
AUDIO_DEVICE_IDLE,
AUDIO_DEVICE_PLAYBACK,
AUDIO_DEVICE_CLOSE,
};
void *audio_device_get_buffer(int *bufsz);
void audio_device_put_buffer(void *ptr);
void audio_device_write(void *buffer, int size);
int audio_device_init(void);
void audio_device_close(void);
void audio_device_open(void);
int audio_device_set_evt_handler(void (*handler)(void *parameter, int state), void *parameter);
void audio_device_set_rate(int sample_rate);
void audio_device_set_volume(int volume);
void audio_device_wait_free(void);
#endif