Initial community commit

Src/Plugins/DSP/dsp_sps/dxi/include/DXi.h

@@ -0,0 +1,121 @@
+#ifndef _DXI_H_
+#define _DXI_H_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+#include <DeferZeroFill.h>
+
+// DirectX automation helper
+#include "MediaParams.h"
+
+////////////////////////////////////////////////////////////////////////////////
+
+struct AudioBuffer
+{
+	long				cSamp;	// number of samples in the buffer
+	long				lOffset;	// offset into the data to process
+	IMediaSample*	pms;		// the raw IMediaSample for this buffer
+
+	AudioBuffer() : cSamp(0), lOffset(0), pms(NULL) {}
+
+	//----------------------------------------------------------------------------
+	// Get a pointer to the audio samples, zero-filling if necesssary
+
+	float* GetPointer()
+	{
+		// Get the raw-pointer
+		BYTE* pb = NULL;
+		pms->GetPointer( &pb );
+
+		// We cannot defer the zero fill any longer!
+		if (bZero)
+		{
+			IDeferZeroFill* pdzf;
+			if (SUCCEEDED( pms->QueryInterface( IID_IDeferZeroFill, (void**)&pdzf ) ))
+			{
+				// IDeferZeroFill will have taken care of the zero-fill for us, by
+				// virtue of our calling IMediaSample::GetPointer.  Nothing more to do.
+				pdzf->Release();
+			}
+			else
+			{
+				// No IDeferZeroFill is available.  We must zero-fill the hard way.
+				memset( pb, 0, cSamp * sizeof(float) );
+			}
+			bZero = FALSE;
+		}
+
+		return reinterpret_cast<float*>( pb + lOffset );
+	}
+
+	//----------------------------------------------------------------------------
+	// Allow buffers to be tagged as being all zeroes, without actually filling
+	// any data until someone asks for the buffer pointer
+
+	BOOL GetZerofill() const { return bZero; }
+
+	void SetZerofill( BOOL bZerofill )
+	{
+		bZero = bZerofill;
+		IDeferZeroFill* pdzf;
+		if (SUCCEEDED( pms->QueryInterface( IID_IDeferZeroFill, (void**)&pdzf ) ))
+		{
+			pdzf->put_NeedsZerofill( bZero );
+			pdzf->Release();
+		}
+	}
+
+private:
+
+	BOOL bZero;
+};
+
+
+////////////////////////////////////////////////////////////////////////////////
+
+class CDXi : public CCritSec
+{
+public:
+
+	virtual HRESULT Initialize() = 0;
+
+	virtual HRESULT IsValidInputFormat( const WAVEFORMATEX* pwfx ) const = 0;
+	virtual HRESULT IsValidOutputFormat( const WAVEFORMATEX* pwfx ) const = 0;
+	virtual HRESULT IsValidTransform( const WAVEFORMATEX* pwfxIn, const WAVEFORMATEX* pwfxOut ) const = 0;
+	virtual HRESULT SuggestOutputFormat( WAVEFORMATEX* pwfx ) const = 0;
+
+	virtual const WAVEFORMATEX* GetInputFormat() const { return &m_wfxIn; }
+	virtual const WAVEFORMATEX* GetOutputFormat() const { return &m_wfxOut; }
+
+	virtual HRESULT	Process( LONGLONG llSampAudioTimestamp,
+										AudioBuffer* pbufIn,
+										AudioBuffer* pbufOut ) = 0;
+
+	virtual HRESULT	AllocateResources() = 0;
+	virtual HRESULT	FreeResources() = 0;
+
+	virtual int			PersistGetSize() const = 0;
+	virtual HRESULT	PersistLoad( IStream* pStream ) = 0;
+	virtual HRESULT	PersistSave( IStream* pStream ) = 0;
+
+protected:
+	WAVEFORMATEX		m_wfxIn;
+	WAVEFORMATEX		m_wfxOut;
+	CMediaParams*		m_pMediaParams;
+
+	float GetParamValue( DWORD dwParam ) const
+	{
+		return m_pMediaParams->GetParamEnvelope( dwParam ).GetCurrentValue();
+	}
+
+	HRESULT GetParamDeltas( DWORD dwParam, double* pdDelta1, double* pdDelta2 ) const
+	{
+		return m_pMediaParams->GetParamEnvelope( dwParam ).GetCurrentDeltas( pdDelta1, pdDelta2 );
+	}
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
+#endif //_DXI_H_