98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
/*
|
|
* Distortion.h
|
|
* ------------
|
|
* Purpose: Implementation of the DMO Distortion DSP (for non-Windows platforms)
|
|
* Notes : (currently none)
|
|
* Authors: OpenMPT Devs
|
|
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
|
|
*/
|
|
|
|
|
|
#ifndef NO_PLUGINS
|
|
|
|
#include "../PlugInterface.h"
|
|
|
|
OPENMPT_NAMESPACE_BEGIN
|
|
|
|
namespace DMO
|
|
{
|
|
|
|
class Distortion final : public IMixPlugin
|
|
{
|
|
protected:
|
|
enum Parameters
|
|
{
|
|
kDistGain = 0,
|
|
kDistEdge,
|
|
kDistPreLowpassCutoff,
|
|
kDistPostEQCenterFrequency,
|
|
kDistPostEQBandwidth,
|
|
kDistNumParameters
|
|
};
|
|
|
|
std::array<float, kDistNumParameters> m_param;
|
|
|
|
// Pre-EQ coefficients
|
|
float m_preEQz1[2], m_preEQb1, m_preEQa0;
|
|
// Post-EQ coefficients
|
|
float m_postEQz1[2], m_postEQz2[2], m_postEQa0, m_postEQb0, m_postEQb1;
|
|
uint8 m_edge, m_shift;
|
|
|
|
public:
|
|
static IMixPlugin* Create(VSTPluginLib &factory, CSoundFile &sndFile, SNDMIXPLUGIN *mixStruct);
|
|
Distortion(VSTPluginLib &factory, CSoundFile &sndFile, SNDMIXPLUGIN *mixStruct);
|
|
|
|
void Release() override { delete this; }
|
|
int32 GetUID() const override { return 0xEF114C90; }
|
|
int32 GetVersion() const override { return 0; }
|
|
void Idle() override { }
|
|
uint32 GetLatency() const override { return 0; }
|
|
|
|
void Process(float *pOutL, float *pOutR, uint32 numFrames) override;
|
|
|
|
float RenderSilence(uint32) override { return 0.0f; }
|
|
|
|
int32 GetNumPrograms() const override { return 0; }
|
|
int32 GetCurrentProgram() override { return 0; }
|
|
void SetCurrentProgram(int32) override { }
|
|
|
|
PlugParamIndex GetNumParameters() const override { return kDistNumParameters; }
|
|
PlugParamValue GetParameter(PlugParamIndex index) override;
|
|
void SetParameter(PlugParamIndex index, PlugParamValue value) override;
|
|
|
|
void Resume() override;
|
|
void Suspend() override { m_isResumed = false; }
|
|
void PositionChanged() override;
|
|
bool IsInstrument() const override { return false; }
|
|
bool CanRecieveMidiEvents() override { return false; }
|
|
bool ShouldProcessSilence() override { return true; }
|
|
|
|
#ifdef MODPLUG_TRACKER
|
|
CString GetDefaultEffectName() override { return _T("Distortion"); }
|
|
|
|
CString GetParamName(PlugParamIndex param) override;
|
|
CString GetParamLabel(PlugParamIndex) override;
|
|
CString GetParamDisplay(PlugParamIndex param) override;
|
|
|
|
CString GetCurrentProgramName() override { return CString(); }
|
|
void SetCurrentProgramName(const CString &) override { }
|
|
CString GetProgramName(int32) override { return CString(); }
|
|
|
|
bool HasEditor() const override { return false; }
|
|
#endif
|
|
|
|
int GetNumInputChannels() const override { return 2; }
|
|
int GetNumOutputChannels() const override { return 2; }
|
|
|
|
protected:
|
|
static float FreqInHertz(float param) { return 100.0f + param * 7900.0f; }
|
|
float GainInDecibel() const { return -60.0f + m_param[kDistGain] * 60.0f; }
|
|
void RecalculateDistortionParams();
|
|
};
|
|
|
|
} // namespace DMO
|
|
|
|
OPENMPT_NAMESPACE_END
|
|
|
|
#endif // !NO_PLUGINS
|