143 lines
2.9 KiB
C++
143 lines
2.9 KiB
C++
/*
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* DSP.h
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* -----
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* Purpose: Mixing code for various DSPs (EQ, Mega-Bass, ...)
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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 "openmpt/all/BuildSettings.hpp"
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OPENMPT_NAMESPACE_BEGIN
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#ifndef NO_DSP
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// Buffer Sizes
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#define SURROUNDBUFFERSIZE 2048 // 50ms @ 48kHz
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class CSurroundSettings
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{
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public:
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uint32 m_nProLogicDepth;
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uint32 m_nProLogicDelay;
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public:
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CSurroundSettings();
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};
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class CMegaBassSettings
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{
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public:
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uint32 m_nXBassDepth;
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uint32 m_nXBassRange;
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public:
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CMegaBassSettings();
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};
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struct BitCrushSettings
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{
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int m_Bits;
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BitCrushSettings();
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};
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class CSurround
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{
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public:
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CSurroundSettings m_Settings;
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// Surround Encoding: 1 delay line + low-pass filter + high-pass filter
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int32 nSurroundSize;
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int32 nSurroundPos;
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int32 nDolbyDepth;
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// Surround Biquads
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int32 nDolbyHP_Y1;
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int32 nDolbyHP_X1;
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int32 nDolbyLP_Y1;
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int32 nDolbyHP_B0;
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int32 nDolbyHP_B1;
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int32 nDolbyHP_A1;
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int32 nDolbyLP_B0;
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int32 nDolbyLP_B1;
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int32 nDolbyLP_A1;
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int32 SurroundBuffer[SURROUNDBUFFERSIZE];
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public:
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CSurround();
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public:
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void SetSettings(const CSurroundSettings &settings) { m_Settings = settings; }
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// [XBass level 0(quiet)-100(loud)], [cutoff in Hz 10-100]
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bool SetXBassParameters(uint32 nDepth, uint32 nRange);
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// [Surround level 0(quiet)-100(heavy)] [delay in ms, usually 5-40ms]
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void SetSurroundParameters(uint32 nDepth, uint32 nDelay);
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void Initialize(bool bReset, DWORD MixingFreq);
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void Process(int * MixSoundBuffer, int * MixRearBuffer, int count, uint32 nChannels);
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private:
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void ProcessStereoSurround(int * MixSoundBuffer, int count);
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void ProcessQuadSurround(int * MixSoundBuffer, int * MixRearBuffer, int count);
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};
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class CMegaBass
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{
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public:
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CMegaBassSettings m_Settings;
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// Bass Expansion: low-pass filter
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int32 nXBassFlt_Y1;
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int32 nXBassFlt_X1;
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int32 nXBassFlt_B0;
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int32 nXBassFlt_B1;
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int32 nXBassFlt_A1;
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// DC Removal Biquad
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int32 nDCRFlt_Y1lf;
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int32 nDCRFlt_X1lf;
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int32 nDCRFlt_Y1rf;
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int32 nDCRFlt_X1rf;
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int32 nDCRFlt_Y1lb;
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int32 nDCRFlt_X1lb;
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int32 nDCRFlt_Y1rb;
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int32 nDCRFlt_X1rb;
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public:
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CMegaBass();
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public:
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void SetSettings(const CMegaBassSettings &settings) { m_Settings = settings; }
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// [XBass level 0(quiet)-100(loud)], [cutoff in Hz 10-100]
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void SetXBassParameters(uint32 nDepth, uint32 nRange);
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void Initialize(bool bReset, DWORD MixingFreq);
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void Process(int * MixSoundBuffer, int * MixRearBuffer, int count, uint32 nChannels);
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};
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class BitCrush
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{
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public:
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BitCrushSettings m_Settings;
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public:
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BitCrush();
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public:
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void SetSettings(const BitCrushSettings &settings) { m_Settings = settings; }
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void Initialize(bool bReset, DWORD MixingFreq);
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void Process(int * MixSoundBuffer, int * MixRearBuffer, int count, uint32 nChannels);
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};
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#endif // NO_DSP
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OPENMPT_NAMESPACE_END
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