70 lines
1.4 KiB
C
70 lines
1.4 KiB
C
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/*
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* EQ.h
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* ----
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* Purpose: Mixing code for equalizer.
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* Notes : Ugh... This should really be removed at some point.
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* Authors: Olivier Lapicque
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* OpenMPT Devs
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* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
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*/
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#pragma once
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#include "BuildSettings.h"
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#include "../soundlib/Mixer.h" // For MIXBUFFERSIZE
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OPENMPT_NAMESPACE_BEGIN
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#ifndef NO_EQ
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#define MAX_EQ_BANDS 6
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typedef struct _EQBANDSTRUCT
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{
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float32 a0;
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float32 a1;
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float32 a2;
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float32 b1;
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float32 b2;
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float32 x1;
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float32 x2;
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float32 y1;
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float32 y2;
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float32 Gain;
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float32 CenterFrequency;
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bool bEnable;
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} EQBANDSTRUCT;
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class CEQ
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{
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private:
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EQBANDSTRUCT gEQ[MAX_EQ_BANDS*2];
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public:
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CEQ();
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public:
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void Initialize(bool bReset, DWORD MixingFreq);
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void ProcessStereo(int *pbuffer, float *MixFloatBuffer, UINT nCount);
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void ProcessMono(int *pbuffer, float *MixFloatBuffer, UINT nCount);
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void SetEQGains(const UINT *pGains, UINT nGains, const UINT *pFreqs, bool bReset, DWORD MixingFreq);
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};
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class CQuadEQ
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{
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private:
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CEQ front;
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CEQ rear;
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float EQTempFloatBuffer[MIXBUFFERSIZE * 2];
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public:
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void Initialize(bool bReset, DWORD MixingFreq);
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void Process(int *frontBuffer, int *rearBuffer, UINT nCount, UINT nChannels);
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void SetEQGains(const UINT *pGains, UINT nGains, const UINT *pFreqs, bool bReset, DWORD MixingFreq);
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};
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#endif // !NO_EQ
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OPENMPT_NAMESPACE_END
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