Initial community commit

Src/external_dependencies/openmpt-trunk/soundlib/plugins/dmo/Flanger.cpp

@@ -0,0 +1,158 @@
+/*
+ * Flanger.cpp
+ * -----------
+ * Purpose: Implementation of the DMO Flanger 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.
+ */
+
+
+#include "stdafx.h"
+
+#ifndef NO_PLUGINS
+#include "../../Sndfile.h"
+#include "Flanger.h"
+#endif // !NO_PLUGINS
+
+OPENMPT_NAMESPACE_BEGIN
+
+#ifndef NO_PLUGINS
+
+namespace DMO
+{
+
+IMixPlugin* Flanger::Create(VSTPluginLib &factory, CSoundFile &sndFile, SNDMIXPLUGIN *mixStruct)
+{
+	return new (std::nothrow) Flanger(factory, sndFile, mixStruct, false);
+}
+
+IMixPlugin* Flanger::CreateLegacy(VSTPluginLib &factory, CSoundFile &sndFile, SNDMIXPLUGIN *mixStruct)
+{
+	return new(std::nothrow) Flanger(factory, sndFile, mixStruct, true);
+}
+
+
+Flanger::Flanger(VSTPluginLib &factory, CSoundFile &sndFile, SNDMIXPLUGIN *mixStruct, const bool legacy)
+	: Chorus(factory, sndFile, mixStruct, !legacy)
+{
+	m_param[kFlangerWetDryMix] = 0.5f;
+	m_param[kFlangerWaveShape] = 1.0f;
+	m_param[kFlangerFrequency] = 0.025f;
+	m_param[kFlangerDepth] = 1.0f;
+	m_param[kFlangerPhase] = 0.5f;
+	m_param[kFlangerFeedback] = (-50.0f + 99.0f) / 198.0f;
+	m_param[kFlangerDelay] = 0.5f;
+
+	// Already done in Chorus constructor
+	//m_mixBuffer.Initialize(2, 2);
+	//InsertIntoFactoryList();
+}
+
+
+void Flanger::SetParameter(PlugParamIndex index, PlugParamValue value)
+{
+	if(index < kFlangerNumParameters)
+	{
+		value = mpt::safe_clamp(value, 0.0f, 1.0f);
+		if(index == kFlangerWaveShape)
+		{
+			value = mpt::round(value);
+			if(m_param[index] != value)
+			{
+				m_waveShapeMin = 0.0f;
+				m_waveShapeMax = 0.5f + value * 0.5f;
+			}
+		} else if(index == kFlangerPhase)
+		{
+			value = mpt::round(value * 4.0f) / 4.0f;
+		}
+		m_param[index] = value;
+		RecalculateChorusParams();
+	}
+}
+
+
+#ifdef MODPLUG_TRACKER
+
+CString Flanger::GetParamName(PlugParamIndex param)
+{
+	switch(param)
+	{
+	case kFlangerWetDryMix: return _T("WetDryMix");
+	case kFlangerWaveShape: return _T("WaveShape");
+	case kFlangerFrequency: return _T("Frequency");
+	case kFlangerDepth: return _T("Depth");
+	case kFlangerPhase: return _T("Phase");
+	case kFlangerFeedback: return _T("Feedback");
+	case kFlangerDelay: return _T("Delay");
+	}
+	return CString();
+}
+
+
+CString Flanger::GetParamLabel(PlugParamIndex param)
+{
+	switch(param)
+	{
+	case kFlangerWetDryMix:
+	case kFlangerDepth:
+	case kFlangerFeedback:
+		return _T("%");
+	case kFlangerFrequency:
+		return _T("Hz");
+	case kFlangerPhase:
+		return mpt::ToCString(MPT_UTF8("\xC2\xB0"));  // U+00B0 DEGREE SIGN
+	case kFlangerDelay:
+		return _T("ms");
+	}
+	return CString();
+}
+
+
+CString Flanger::GetParamDisplay(PlugParamIndex param)
+{
+	CString s;
+	float value = m_param[param];
+	switch(param)
+	{
+	case kFlangerWetDryMix:
+	case kFlangerDepth:
+		value *= 100.0f;
+		break;
+	case kFlangerFrequency:
+		value = FrequencyInHertz();
+		break;
+	case kFlangerWaveShape:
+		return (value < 1) ? _T("Triangle") : _T("Sine");
+		break;
+	case kFlangerPhase:
+		switch(Phase())
+		{
+		case 0: return _T("-180");
+		case 1: return _T("-90");
+		case 2: return _T("0");
+		case 3: return _T("90");
+		case 4: return _T("180");
+		}
+		break;
+	case kFlangerFeedback:
+		value = Feedback();
+		break;
+	case kFlangerDelay:
+		value = Delay();
+	}
+	s.Format(_T("%.2f"), value);
+	return s;
+}
+
+#endif // MODPLUG_TRACKER
+
+} // namespace DMO
+
+#else
+MPT_MSVC_WORKAROUND_LNK4221(Flanger)
+
+#endif // !NO_PLUGINS
+
+OPENMPT_NAMESPACE_END