dolphin/Source/Core/AudioCommon/Src/Mixer.h

// Copyright (C) 2003-2009 Dolphin Project.

// 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, version 2.0.

// 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 2.0 for more details.

// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/

// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/

#ifndef _MIXER_H_
#define _MIXER_H_

#include "FixedSizeQueue.h"

// On real hardware, this fifo is much, much smaller. But timing is also
// tighter than under Windows, so...
#define queue_minlength  1024 * 4
#define queue_maxlength  1024 * 28

class CMixer {
	
public:
	CMixer() : m_sampleRate(48000),m_bits(16),m_channels(2), m_mode(2), m_HLEready(false),m_queueSize(0) {}

	// Called from audio threads
	virtual int Mix(short *sample, int numSamples);
	
	// Called from main thread
	virtual void PushSamples(short* samples, int num_stereo_samples, int core_sample_rate);
	
	virtual void Premix(short *samples, int numSamples) {}

	int GetSampleRate() {return m_sampleRate;}

	int GetDataSize() {return m_queueSize;}

	void SetThrottle(bool use) { m_throttle = use;}
	void SetDTKMusic(bool use) { m_EnableDTKMusic = use;}

	// TODO: do we need this
	bool IsHLEReady() { return m_HLEready;}
	void SetHLEReady(bool ready) { m_HLEready = ready;}
	// ---------------------

protected:
	int m_sampleRate;
	int m_bits;
	int m_channels;
	
	int m_mode;
	bool m_HLEready;
	int m_queueSize;

	bool m_EnableDTKMusic;
	bool m_throttle;
private:
	Common::CriticalSection push_sync;
	FixedSizeQueue<s16, queue_maxlength> sample_queue;

};

#endif // _MIXER_H_