winamp/Src/Plugins/DSP/dsp_sps/dxi/include/DXi.h
2024-09-24 14:54:57 +02:00

122 lines
3.2 KiB
C++

#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_