audio_buffer.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 TITANIC_AUDIO_BUFFER_H
#define TITANIC_AUDIO_BUFFER_H
 
#include "titanic/support/fixed_queue.h"
#include "common/mutex.h"
 
namespace Titanic {
 
#define AUDIO_SAMPLING_RATE 22050
 
class CAudioBuffer {
private:
    Common::Mutex _mutex;
    FixedQueue<int16, AUDIO_SAMPLING_RATE * 4> _data;
private:
    void enterCriticalSection();
 
    void leaveCriticalSection();
private:
    bool _finished;
public:
    CAudioBuffer(int maxSize);
 
    void reset();
 
    bool empty() const { return _data.empty(); }
 
    int size() const { return _data.size(); }
 
    int freeSize() const { return _data.freeSize(); }
 
    bool full() const { return _data.full(); }
 
    bool isFinished() const { return _finished && empty(); }
 
    void push(int16 value);
 
    void push(const int16 *values, int count);
 
    int16 pop();
 
    int read(int16 *values, int count);
 
    void finalize() { _finished = true; }
};
 
} // End of namespace Titanic
 
#endif /* TITANIC_AUDIO_BUFFER_H */