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/*=============================================================================
	SMACIMAsdec.h

=============================================================================*/
#if !defined(__SMACIMAsdec_h__)
#define __SMACIMAsdec_h__

//=============================================================================
//	Includes
//=============================================================================

#include "SMACsdec.h"

#define kIMA4BlockSamples		64							/* no. samples in a block */
#define kIMA4BlockFrames		32							/* no. frames in a block */
#define kIMA4BlockBytes			34							/* no. bytes in a block */
#define kIMA4BytesPerSample		2							/* no. bytes in decompressed sample */

//=============================================================================
//	SMACIMAsdec
//=============================================================================

class SMACIMAsdec
:
	public	SMACsdec
{

//	Construction/Destruction
public:
								SMACIMAsdec(ComponentInstance inSelf);
	virtual						~SMACIMAsdec();

//	Sound Component Methods
public:
	virtual void				GetInfo(SoundSource inSourceID, OSType inSelector, void* outData);
	virtual void				SetInfo(SoundSource inSourceID, OSType inSelector, void* inData);
	virtual void				GetSourceData(SoundComponentData** outData);

//	Implementation
protected:
	virtual void				GetCompressionInfo(CompressionInfo& outCompressionInfo);
	virtual void				GetDecompressionParams(void* outData);
	virtual ComponentInstance	SetDecompressionParams(const void* inData);

	void	CreateIMADecoder();

//	Utility routines
protected:
	static Component			FindIMAAudioDecoderComponent(const AudioStreamBasicDescription& inFormat);
	static ComponentInstance	InitializeIMAAudioDecoder(Component inDecoderComponent, const AudioStreamBasicDescription& inFormat);
	UInt32	mNumChannels;
	UInt32	mSampleRate;

};

#endif
