Play-/tools/MediaCenter/Source/XaSoundStreamDecoder.h

#ifndef _XASOUNDSTREAMDECODER_H_
#define _XASOUNDSTREAMDECODER_H_

#include "WavOutputStream.h"
#include "StdStream.h"
#include "MemStream.h"

class XaSoundStreamDecoder
{
public:
	XaSoundStreamDecoder();
	virtual ~XaSoundStreamDecoder();

	void Execute(Framework::CStream&);

private:
	enum STATE
	{
		STATE_CHECK_HEADER,
		STATE_READ_HEADER,
		STATE_CHECK_DATA_HEADER,
		STATE_READ_DATA_HEADER,
		STATE_READ_DATA,
	};

	bool IsPcm() const;
	void DecodePcmSamples(uint8*, unsigned int);
	void DecodeAdpcmSamples(uint8*);
	void MixChannels();

	STATE m_state;
	uint32 m_samplingRate;
	uint32 m_bitDepth;
	uint32 m_channelCount;
	uint32 m_interleaveSize;
	uint32 m_dataSize;

	int32 m_leftPredictor[2];
	int32 m_rightPredictor[2];
	int16* m_channelBuffer[2];
	uint32 m_channelBufferSize;

	uint32 m_currentAddress;
	uint32 m_currentChannel;

#ifdef _DEBUG
	Framework::CStdStream* m_outputFile;
	Framework::CWavOutputStream* m_wavOutput;
#endif
};

#endif