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/*
* Copyright (C) 2022 Javier S. Pedro
*
* 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.
*/
#ifndef VMUSIC_PCMALSA_H
#define VMUSIC_PCMALSA_H
#include <stddef.h>
#include <stdint.h>
typedef struct _snd_pcm snd_pcm_t;
class PCMOutAlsa
{
public:
PCMOutAlsa();
~PCMOutAlsa();
int open(const char *dev, unsigned int sampleRate, unsigned int channels);
int close();
ssize_t avail();
int wait();
ssize_t write(int16_t *buf, size_t n);
private:
int setParams(unsigned int sampleRate, unsigned int channels, unsigned int bufferTime, unsigned int periodTime);
private:
snd_pcm_t * _pcm;
size_t _bufferSize;
size_t _periodSize;
};
#endif
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