67 lines
1.5 KiB
C++
67 lines
1.5 KiB
C++
/*
|
|
* EQ.h
|
|
* ----
|
|
* Purpose: Mixing code for equalizer.
|
|
* Notes : Ugh... This should really be removed at some point.
|
|
* Authors: Olivier Lapicque
|
|
* OpenMPT Devs
|
|
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
|
|
*/
|
|
|
|
|
|
#pragma once
|
|
|
|
#include "openmpt/all/BuildSettings.hpp"
|
|
|
|
#include "openmpt/base/Types.hpp"
|
|
#include "openmpt/soundbase/MixSample.hpp"
|
|
|
|
#include <array>
|
|
|
|
#include <cstddef>
|
|
|
|
OPENMPT_NAMESPACE_BEGIN
|
|
|
|
#ifndef NO_EQ
|
|
|
|
inline constexpr std::size_t MAX_EQ_CHANNELS = 4;
|
|
inline constexpr std::size_t MAX_EQ_BANDS = 6;
|
|
|
|
struct EQBANDSTATE
|
|
{
|
|
float x1 = 0.0f;
|
|
float x2 = 0.0f;
|
|
float y1 = 0.0f;
|
|
float y2 = 0.0f;
|
|
};
|
|
|
|
struct EQBANDSETTINGS
|
|
{
|
|
float a0;
|
|
float a1;
|
|
float a2;
|
|
float b1;
|
|
float b2;
|
|
float Gain;
|
|
float CenterFrequency;
|
|
};
|
|
|
|
class CEQ
|
|
{
|
|
private:
|
|
std::array<std::array<EQBANDSTATE, MAX_EQ_BANDS>, MAX_EQ_CHANNELS> m_ChannelState;
|
|
std::array<EQBANDSETTINGS, MAX_EQ_BANDS> m_Bands;
|
|
template <typename TMixSample>
|
|
void ProcessTemplate(TMixSample *frontBuffer, TMixSample *rearBuffer, std::size_t countFrames, std::size_t numChannels);
|
|
public:
|
|
CEQ();
|
|
void Initialize(bool bReset, uint32 MixingFreq);
|
|
void Process(MixSampleInt *frontBuffer, MixSampleInt *rearBuffer, std::size_t countFrames, std::size_t numChannels);
|
|
void Process(MixSampleFloat *frontBuffer, MixSampleFloat *rearBuffer, std::size_t countFrames, std::size_t numChannels);
|
|
void SetEQGains(const uint32 *pGains, const uint32 *pFreqs, bool bReset, uint32 MixingFreq);
|
|
};
|
|
|
|
#endif // !NO_EQ
|
|
|
|
OPENMPT_NAMESPACE_END
|