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// ----------------------------------------------------------------------------
//
// Copyright (C) 2003-2013 Fons Adriaensen <fons@linuxaudio.org>
//
// 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 3 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, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
#ifndef __LFQUEUE_H
#define __LFQUEUE_H
#include <stdint.h>
class Lfq_u8
{
public:
Lfq_u8 (int size);
~Lfq_u8 (void);
int write_avail (void) const { return _size - _nwr + _nrd; }
void write_commit (int n) { _nwr += n; }
void write (int i, uint8_t v) { _data [(_nwr + i) & _mask] = v; }
int read_avail (void) const { return _nwr - _nrd; }
void read_commit (int n) { _nrd += n; }
uint8_t read (int i) { return _data [(_nrd + i) & _mask]; }
private:
uint8_t * _data;
int _size;
int _mask;
int _nwr;
int _nrd;
};
class Lfq_u16
{
public:
Lfq_u16 (int size);
~Lfq_u16 (void);
int write_avail (void) const { return _size - _nwr + _nrd; }
void write_commit (int n) { _nwr += n; }
void write (int i, uint16_t v) { _data [(_nwr + i) & _mask] = v; }
int read_avail (void) const { return _nwr - _nrd; }
void read_commit (int n) { _nrd += n; }
uint16_t read (int i) { return _data [(_nrd + i) & _mask]; }
private:
uint16_t *_data;
int _size;
int _mask;
int _nwr;
int _nrd;
};
class Lfq_u32
{
public:
Lfq_u32 (int size);
~Lfq_u32 (void);
int write_avail (void) const { return _size - _nwr + _nrd; }
void write_commit (int n) { _nwr += n; }
void write (int i, uint32_t v) { _data [(_nwr + i) & _mask] = v; }
int read_avail (void) const { return _nwr - _nrd; }
void read_commit (int n) { _nrd += n; }
uint32_t read (int i) { return _data [(_nrd + i) & _mask]; }
private:
uint32_t *_data;
int _size;
int _mask;
int _nwr;
int _nrd;
};
#endif
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