More DISTHRO work, first Nekobi plugin code

source/backend/native/Makefile

@@ -79,6 +79,7 @@ ifeq ($(HAVE_OPENGL),true)
 OBJS += \
 	distrho-3bandeq.cpp.o \
 	distrho-3bandsplitter.cpp.o \
+	distrho-nekobi.cpp.o \
 	distrho-pingpongpan.cpp.o \
 	distrho-stereoenhancer.cpp.o
 endif
@@ -171,6 +172,9 @@ distrho-3bandeq.cpp.o: distrho-3bandeq.cpp 3bandeq/*.cpp 3bandeq/*.h 3bandeq/*.h
 distrho-3bandsplitter.cpp.o: distrho-3bandsplitter.cpp 3bandsplitter/*.cpp 3bandsplitter/*.h 3bandsplitter/*.hpp distrho/DistrhoPluginCarla.cpp $(CXXDEPS)
 	$(CXX) $< $(GL_CXX_FLAGS) -I3bandsplitter -DDISTRHO_NAMESPACE=DISTRHO_3BandSplitter -c -o $@
 
+distrho-nekobi.cpp.o: distrho-nekobi.cpp nekobi/*.cpp nekobi/*.h nekobi/*.hpp nekobi/nekobee-src/*.c nekobi/nekobee-src/*.h distrho/DistrhoPluginCarla.cpp $(CXXDEPS)
+	$(CXX) $< $(GL_CXX_FLAGS) -Inekobi -DDISTRHO_NAMESPACE=DISTRHO_Nekobi -c -o $@
+
 distrho-pingpongpan.cpp.o: distrho-pingpongpan.cpp pingpongpan/*.cpp pingpongpan/*.h pingpongpan/*.hpp distrho/DistrhoPluginCarla.cpp $(CXXDEPS)
 	$(CXX) $< $(GL_CXX_FLAGS) -Ipingpongpan -DDISTRHO_NAMESPACE=DISTRHO_PingPongPan -c -o $@
 

source/backend/native/distrho-nekobi.cpp

@@ -0,0 +1,58 @@
+/*
+ * Carla Native Plugins
+ * Copyright (C) 2012-2013 Filipe Coelho <falktx@falktx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * For a full copy of the GNU General Public License see the GPL.txt file
+ */
+
+#include "CarlaNative.hpp"
+
+// Plugin Code
+#include "nekobi/DistrhoArtworkNekobi.cpp"
+#include "nekobi/DistrhoPluginNekobi.cpp"
+#include "nekobi/DistrhoUINekobi.cpp"
+
+// Carla DISTRHO Plugin
+#include "distrho/DistrhoPluginCarla.cpp"
+
+START_NAMESPACE_DISTRHO
+
+// -----------------------------------------------------------------------
+
+static const PluginDescriptor nekobiDesc = {
+    /* category  */ PLUGIN_CATEGORY_EQ,
+    /* hints     */ static_cast<PluginHints>(PLUGIN_IS_RTSAFE|PLUGIN_IS_SYNTH|PLUGIN_HAS_GUI),
+    /* audioIns  */ DISTRHO_PLUGIN_NUM_INPUTS,
+    /* audioOuts */ DISTRHO_PLUGIN_NUM_OUTPUTS,
+    /* midiIns   */ 1,
+    /* midiOuts  */ 0,
+    /* paramIns  */ DistrhoPluginNekobi::paramCount,
+    /* paramOuts */ 0,
+    /* name      */ DISTRHO_PLUGIN_NAME,
+    /* label     */ "Nekobi",
+    /* maker     */ "falkTX",
+    /* copyright */ "GPL v2+",
+    PluginDescriptorFILL(PluginCarla)
+};
+
+END_NAMESPACE_DISTRHO
+
+// -----------------------------------------------------------------------
+
+void carla_register_native_plugin_Nekobi()
+{
+    USE_NAMESPACE_DISTRHO
+    carla_register_native_plugin(&nekobiDesc);
+}
+
+// -----------------------------------------------------------------------

source/backend/native/distrho/DistrhoPluginCarla.cpp

@@ -378,10 +378,10 @@ protected:
             const ::MidiEvent* const midiEvent = &midiEvents[i];
             MidiEvent* const realMidiEvent = &fRealMidiEvents[i];
 
-            realMidiEvent->buffer[0] = midiEvent->data[0];
-            realMidiEvent->buffer[1] = midiEvent->data[1];
-            realMidiEvent->buffer[2] = midiEvent->data[2];
-            realMidiEvent->frame     = midiEvent->time;
+            realMidiEvent->frame = midiEvent->time;
+            realMidiEvent->size  = midiEvent->size;
+
+            carla_copy<uint8_t>(realMidiEvent->buf, midiEvent->data, midiEvent->size);
         }
 
         fPlugin.run(inBuffer, outBuffer, frames, i, fRealMidiEvents);

source/backend/native/nekobi/DistrhoArtworkNekobi.hpp

@@ -0,0 +1,75 @@
+/* (Auto-generated binary data file). */
+
+#ifndef BINARY_DISTRHOARTWORKNEKOBI_HPP
+#define BINARY_DISTRHOARTWORKNEKOBI_HPP
+
+namespace DistrhoArtworkNekobi
+{
+    extern const char* backgroundData;
+    const unsigned int backgroundDataSize = 206064;
+    const unsigned int backgroundWidth    = 636;
+    const unsigned int backgroundHeight   = 108;
+
+    extern const char* claw1Data;
+    const unsigned int claw1DataSize = 4096;
+    const unsigned int claw1Width    = 32;
+    const unsigned int claw1Height   = 32;
+
+    extern const char* claw2Data;
+    const unsigned int claw2DataSize = 4096;
+    const unsigned int claw2Width    = 32;
+    const unsigned int claw2Height   = 32;
+
+    extern const char* knobData;
+    const unsigned int knobDataSize = 288444;
+    const unsigned int knobWidth    = 43;
+    const unsigned int knobHeight   = 1677;
+
+    extern const char* run1Data;
+    const unsigned int run1DataSize = 4096;
+    const unsigned int run1Width    = 32;
+    const unsigned int run1Height   = 32;
+
+    extern const char* run2Data;
+    const unsigned int run2DataSize = 4096;
+    const unsigned int run2Width    = 32;
+    const unsigned int run2Height   = 32;
+
+    extern const char* run3Data;
+    const unsigned int run3DataSize = 4096;
+    const unsigned int run3Width    = 32;
+    const unsigned int run3Height   = 32;
+
+    extern const char* run4Data;
+    const unsigned int run4DataSize = 4096;
+    const unsigned int run4Width    = 32;
+    const unsigned int run4Height   = 32;
+
+    extern const char* scratch1Data;
+    const unsigned int scratch1DataSize = 4096;
+    const unsigned int scratch1Width    = 32;
+    const unsigned int scratch1Height   = 32;
+
+    extern const char* scratch2Data;
+    const unsigned int scratch2DataSize = 4096;
+    const unsigned int scratch2Width    = 32;
+    const unsigned int scratch2Height   = 32;
+
+    extern const char* sitData;
+    const unsigned int sitDataSize = 4096;
+    const unsigned int sitWidth    = 32;
+    const unsigned int sitHeight   = 32;
+
+    extern const char* sliderData;
+    const unsigned int sliderDataSize = 4624;
+    const unsigned int sliderWidth    = 34;
+    const unsigned int sliderHeight   = 34;
+
+    extern const char* tailData;
+    const unsigned int tailDataSize = 4096;
+    const unsigned int tailWidth    = 32;
+    const unsigned int tailHeight   = 32;
+}
+
+#endif // BINARY_DISTRHOARTWORKNEKOBI_HPP
+

source/backend/native/nekobi/DistrhoPluginInfo.h

@@ -0,0 +1,37 @@
+/*
+ * DISTRHO Nekobi Plugin, based on Nekobee by Sean Bolton and others.
+ * Copyright (C) 2013 Filipe Coelho <falktx@falktx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * For a full copy of the GNU General Public License see the GPL.txt file
+ */
+
+#ifndef __DISTRHO_PLUGIN_INFO_H__
+#define __DISTRHO_PLUGIN_INFO_H__
+
+#define DISTRHO_PLUGIN_NAME "Nekobi"
+
+#define DISTRHO_PLUGIN_HAS_UI        1
+#define DISTRHO_PLUGIN_IS_SYNTH      1
+
+#define DISTRHO_PLUGIN_NUM_INPUTS    0
+#define DISTRHO_PLUGIN_NUM_OUTPUTS   1
+
+#define DISTRHO_PLUGIN_WANT_LATENCY  0
+#define DISTRHO_PLUGIN_WANT_PROGRAMS 1
+#define DISTRHO_PLUGIN_WANT_STATE    0
+
+#define DISTRHO_PLUGIN_URI "http://distrho.sf.net/plugins/Nekobi"
+
+#define DISTRHO_UI_OPENGL
+
+#endif // __DISTRHO_PLUGIN_INFO_H__

source/backend/native/nekobi/DistrhoPluginNekobi.cpp

@@ -0,0 +1,422 @@
+/*
+ * DISTRHO Nekobi Plugin, based on Nekobee by Sean Bolton and others.
+ * Copyright (C) 2004 Sean Bolton and others
+ * Copyright (C) 2013 Filipe Coelho <falktx@falktx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * For a full copy of the GNU General Public License see the GPL.txt file
+ */
+
+#include "DistrhoPluginNekobi.hpp"
+
+#include "CarlaUtils.hpp"
+
+extern "C" {
+#include "nekobee-src/nekobee_synth.c"
+#include "nekobee-src/nekobee_voice.c"
+#include "nekobee-src/nekobee_voice_render.c"
+#include "nekobee-src/minblep_tables.c"
+
+/* ---- mutual exclusion ---- */
+
+bool dssp_voicelist_mutex_trylock(nekobee_synth_t* synth)
+{
+    /* Attempt the mutex lock */
+    if (pthread_mutex_trylock(&synth->voicelist_mutex) != 0)
+    {
+        synth->voicelist_mutex_grab_failed = 1;
+        return false;
+    }
+
+    /* Clean up if a previous mutex grab failed */
+    if (synth->voicelist_mutex_grab_failed)
+    {
+        nekobee_synth_all_voices_off(synth);
+        synth->voicelist_mutex_grab_failed = 0;
+    }
+
+    return true;
+}
+
+bool dssp_voicelist_mutex_lock(nekobee_synth_t* synth)
+{
+    return (pthread_mutex_lock(&synth->voicelist_mutex) == 0);
+}
+
+bool dssp_voicelist_mutex_unlock(nekobee_synth_t *synth)
+{
+    return (pthread_mutex_unlock(&synth->voicelist_mutex) == 0);
+}
+
+/*
+ * nekobee_handle_raw_event
+ */
+void nekobee_handle_raw_event(nekobee_synth_t* synth, uint8_t size, const uint8_t* data)
+{
+    if (size != 3)
+        return;
+
+    switch (data[0] & 0xf0)
+    {
+    case 0x80:
+        nekobee_synth_note_off(synth, data[1], data[2]);
+        break;
+    case 0x90:
+        if (data[2] > 0)
+            nekobee_synth_note_on(synth, data[1], data[2]);
+        else
+            nekobee_synth_note_off(synth, data[1], 64); /* shouldn't happen, but... */
+        break;
+    case 0xB0:
+        nekobee_synth_control_change(synth, data[1], data[2]);
+        break;
+    default:
+        break;
+    }
+}
+
+} /* extern "C" */
+
+START_NAMESPACE_DISTRHO
+
+// -------------------------------------------------
+
+DistrhoPluginNekobi::DistrhoPluginNekobi()
+    : Plugin(paramCount, 1, 0) // 1 program, 0 states
+{
+    nekobee_init_tables();
+
+    // init synth
+    fSynth = new nekobee_synth_t;
+
+    fSynth->sample_rate = d_sampleRate();
+    fSynth->deltat = 1.0f / (float)d_sampleRate();
+    fSynth->nugget_remains = 0;
+
+    fSynth->note_id = 0;
+    fSynth->polyphony = XSYNTH_DEFAULT_POLYPHONY;
+    fSynth->voices = XSYNTH_DEFAULT_POLYPHONY;
+    fSynth->monophonic = XSYNTH_MONO_MODE_ONCE;
+    fSynth->glide = 0;
+    fSynth->last_noteon_pitch = 0.0f;
+    fSynth->vcf_accent = 0.0f;
+    fSynth->vca_accent = 0.0f;
+
+    for (int i=0; i<8; ++i)
+      fSynth->held_keys[i] = -1;
+
+    fSynth->voice = nekobee_voice_new();
+    fSynth->voicelist_mutex_grab_failed = 0;
+    pthread_mutex_init(&fSynth->voicelist_mutex, NULL);
+
+    fSynth->channel_pressure = 0;
+    fSynth->pitch_wheel_sensitivity = 0;
+    fSynth->pitch_wheel = 0;
+
+    for (int i=0; i<128; ++i)
+    {
+        fSynth->key_pressure[i] = 0;
+        fSynth->cc[i] = 0;
+    }
+    fSynth->cc[7] = 127; // full volume
+
+    fSynth->mod_wheel  = 1.0f;
+    fSynth->pitch_bend = 1.0f;
+    fSynth->cc_volume  = 1.0f;
+
+    // set default values
+    d_setProgram(0);
+
+    // reset
+    d_deactivate();
+}
+
+DistrhoPluginNekobi::~DistrhoPluginNekobi()
+{
+    free(fSynth->voice);
+    delete fSynth;
+}
+
+// -------------------------------------------------
+// Init
+
+void DistrhoPluginNekobi::d_initParameter(uint32_t index, Parameter& parameter)
+{
+    switch (index)
+    {
+    case paramWaveform:
+        parameter.hints      = PARAMETER_IS_AUTOMABLE|PARAMETER_IS_BOOLEAN;
+        parameter.name       = "Waveform";
+        parameter.symbol     = "waveform";
+        parameter.ranges.def = 0.0f;
+        parameter.ranges.min = 0.0f;
+        parameter.ranges.max = 1.0f;
+        break;
+    case paramTuning:
+        parameter.hints      = PARAMETER_IS_AUTOMABLE; // was 0.5 <-> 2.0, log
+        parameter.name       = "Tuning";
+        parameter.symbol     = "tuning";
+        parameter.ranges.def = 0.0f;
+        parameter.ranges.min = -12.0f;
+        parameter.ranges.max = 12.0f;
+        break;
+    case paramCutoff:
+        parameter.hints      = PARAMETER_IS_AUTOMABLE; // modified x2.5
+        parameter.name       = "Cutoff";
+        parameter.symbol     = "cutoff";
+        parameter.unit       = "%";
+        parameter.ranges.def = 25.0f;
+        parameter.ranges.min = 0.0f;
+        parameter.ranges.max = 100.0f;
+        break;
+    case paramResonance:
+        parameter.hints      = PARAMETER_IS_AUTOMABLE; // modified x100
+        parameter.name       = "VCF Resonance";
+        parameter.symbol     = "resonance";
+        parameter.unit       = "%";
+        parameter.ranges.def = 25.0f;
+        parameter.ranges.min = 0.0f;
+        parameter.ranges.max = 95.0f;
+        break;
+    case paramEnvMod:
+        parameter.hints      = PARAMETER_IS_AUTOMABLE; // modified x100
+        parameter.name       = "Env Mod";
+        parameter.symbol     = "env_mod";
+        parameter.unit       = "%";
+        parameter.ranges.def = 50.0f;
+        parameter.ranges.min = 0.0f;
+        parameter.ranges.max = 100.0f;
+        break;
+    case paramDecay:
+        parameter.hints      = PARAMETER_IS_AUTOMABLE; // was 0.000009 <-> 0.0005, log
+        parameter.name       = "Decay";
+        parameter.symbol     = "decay";
+        parameter.unit       = "%";
+        parameter.ranges.def = 75.0f;
+        parameter.ranges.min = 0.0f;
+        parameter.ranges.max = 100.0f;
+        break;
+    case paramAccent:
+        parameter.hints      = PARAMETER_IS_AUTOMABLE; // modified x100
+        parameter.name       = "Accent";
+        parameter.symbol     = "accent";
+        parameter.unit       = "%";
+        parameter.ranges.def = 25.0f;
+        parameter.ranges.min = 0.0f;
+        parameter.ranges.max = 100.0f;
+        break;
+    case paramVolume:
+        parameter.hints      = PARAMETER_IS_AUTOMABLE; // modified x100
+        parameter.name       = "Volume";
+        parameter.symbol     = "volume";
+        parameter.unit       = "%";
+        parameter.ranges.def = 75.0f;
+        parameter.ranges.min = 0.0f;
+        parameter.ranges.max = 100.0f;
+        break;
+    }
+}
+
+void DistrhoPluginNekobi::d_initProgramName(uint32_t index, d_string& programName)
+{
+    if (index != 0)
+        return;
+
+    programName = "Default";
+}
+
+// -------------------------------------------------
+// Internal data
+
+float DistrhoPluginNekobi::d_parameterValue(uint32_t index)
+{
+    switch (index)
+    {
+    case paramWaveform:
+        return fParams.waveform;
+    case paramTuning:
+        return fParams.tuning;
+    case paramCutoff:
+        return fParams.cutoff;
+    case paramResonance:
+        return fParams.resonance;
+    case paramEnvMod:
+        return fParams.envMod;
+    case paramDecay:
+        return fParams.decay;
+    case paramAccent:
+        return fParams.accent;
+    case paramVolume:
+        return fParams.volume;
+    }
+
+    return 0.0f;
+}
+
+void DistrhoPluginNekobi::d_setParameterValue(uint32_t index, float value)
+{
+    switch (index)
+    {
+    case paramWaveform:
+        fParams.waveform = value;
+        fSynth->waveform = value;
+        CARLA_SAFE_ASSERT_INT2(fSynth->waveform == 0.0f || fSynth->waveform == 1.0f, fSynth->waveform, value);
+        break;
+    case paramTuning:
+        fParams.tuning = value;
+        fSynth->tuning = (value+12.0f)/24.0f * 1.5 + 0.5f; // FIXME: log?
+        CARLA_SAFE_ASSERT_INT2(fSynth->tuning >= 0.5f && fSynth->tuning <= 2.0f, fSynth->tuning, value);
+        break;
+    case paramCutoff:
+        fParams.cutoff = value;
+        fSynth->cutoff = value/2.5f;
+        CARLA_SAFE_ASSERT_INT2(fSynth->cutoff >= 0.0f && fSynth->cutoff <= 40.0f, fSynth->cutoff, value);
+        break;
+    case paramResonance:
+        fParams.resonance = value;
+        fSynth->resonance = value/100.0f;
+        CARLA_SAFE_ASSERT_INT2(fSynth->resonance >= 0.0f && fSynth->resonance <= 0.95f, fSynth->resonance, value);
+        break;
+    case paramEnvMod:
+        fParams.envMod = value;
+        fSynth->envmod = value/100.0f;
+        CARLA_SAFE_ASSERT_INT2(fSynth->envmod >= 0.0f && fSynth->envmod <= 1.0f, fSynth->envmod, value);
+        break;
+    case paramDecay:
+        fParams.decay = value;
+        fSynth->decay = value/100.0f * 0.000491f + 0.000009f; // FIXME: log?
+        CARLA_SAFE_ASSERT_INT2(fSynth->decay >= 0.000009f && fSynth->decay <= 0.0005f, fSynth->decay, value);
+        break;
+    case paramAccent:
+        fParams.accent = value;
+        fSynth->accent = value/100.0f;
+        CARLA_SAFE_ASSERT_INT2(fSynth->accent >= 0.0f && fSynth->accent <= 1.0f, fSynth->accent, value);
+        break;
+    case paramVolume:
+        fParams.volume = value;
+        fSynth->volume = value/100.0f;
+        CARLA_SAFE_ASSERT_INT2(fSynth->volume >= 0.0f && fSynth->volume <= 1.0f, fSynth->volume, value);
+        break;
+    }
+}
+
+void DistrhoPluginNekobi::d_setProgram(uint32_t index)
+{
+    if (index != 0)
+        return;
+
+    // Default values
+    fParams.waveform = 0.0f;
+    fParams.tuning = 0.0f;
+    fParams.cutoff = 25.0f;
+    fParams.resonance = 25.0f;
+    fParams.envMod = 50.0f;
+    fParams.decay  = 75.0f;
+    fParams.accent = 25.0f;
+    fParams.volume = 75.0f;
+
+    // Internal stuff
+    fSynth->waveform  = 0.0f;
+    fSynth->tuning    = 1.0f;
+    fSynth->cutoff    = 5.0f;
+    fSynth->resonance = 0.8f;
+    fSynth->envmod    = 0.3f;
+    fSynth->decay     = 0.0002f;
+    fSynth->accent    = 0.3f;
+    fSynth->volume    = 0.75f;
+}
+
+// -------------------------------------------------
+// Process
+
+void DistrhoPluginNekobi::d_activate()
+{
+    fSynth->nugget_remains = 0;
+    fSynth->note_id = 0;
+
+    if (fSynth->voice != nullptr)
+        nekobee_synth_all_voices_off(fSynth);
+}
+
+void DistrhoPluginNekobi::d_deactivate()
+{
+    if (fSynth->voice != nullptr)
+        nekobee_synth_all_voices_off(fSynth);
+}
+
+void DistrhoPluginNekobi::d_run(float**, float** outputs, uint32_t frames, uint32_t midiEventCount, const MidiEvent* midiEvents)
+{
+    uint32_t framesDone = 0;
+    uint32_t curEventIndex = 0;
+    uint32_t burstSize;
+
+    float* out = outputs[0];
+
+    if (fSynth->voice == nullptr || ! dssp_voicelist_mutex_trylock(fSynth))
+    {
+        for (uint32_t i=0; i < frames; ++i)
+            *out++ = 0.0f;
+        return;
+    }
+
+    while (framesDone < frames)
+    {
+        if (fSynth->nugget_remains == 0)
+            fSynth->nugget_remains = XSYNTH_NUGGET_SIZE;
+
+        /* process any ready events */
+        while (curEventIndex < midiEventCount && framesDone == midiEvents[curEventIndex].frame)
+        {
+            nekobee_handle_raw_event(fSynth, midiEvents[curEventIndex].size, midiEvents[curEventIndex].buf);
+            curEventIndex++;
+        }
+
+        /* calculate the sample count (burstSize) for the next nekobee_voice_render() call to be the smallest of:
+         * - control calculation quantization size (XSYNTH_NUGGET_SIZE, in samples)
+         * - the number of samples remaining in an already-begun nugget (synth->nugget_remains)
+         * - the number of samples until the next event is ready
+         * - the number of samples left in this run
+         */
+        burstSize = XSYNTH_NUGGET_SIZE;
+
+        /* we're still in the middle of a nugget, so reduce the burst size
+         * to end when the nugget ends */
+        if (fSynth->nugget_remains < burstSize)
+            burstSize = fSynth->nugget_remains;
+
+        /* reduce burst size to end when next event is ready */
+        if (curEventIndex < midiEventCount && midiEvents[curEventIndex].frame - framesDone < burstSize)
+            burstSize = midiEvents[curEventIndex].frame - framesDone;
+
+        /* reduce burst size to end at end of this run */
+        if (frames - framesDone < burstSize)
+            burstSize = frames - framesDone;
+
+        /* render the burst */
+        nekobee_synth_render_voices(fSynth, out + framesDone, burstSize, (burstSize == fSynth->nugget_remains));
+        framesDone += burstSize;
+        fSynth->nugget_remains -= burstSize;
+    }
+
+    dssp_voicelist_mutex_unlock(fSynth);
+}
+
+// -------------------------------------------------
+
+Plugin* createPlugin()
+{
+    return new DistrhoPluginNekobi();
+}
+
+// -------------------------------------------------
+
+END_NAMESPACE_DISTRHO

source/backend/native/nekobi/DistrhoPluginNekobi.hpp

@@ -0,0 +1,117 @@
+/*
+ * DISTRHO Nekobi Plugin, based on Nekobee by Sean Bolton and others.
+ * Copyright (C) 2004 Sean Bolton and others
+ * Copyright (C) 2013 Filipe Coelho <falktx@falktx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * For a full copy of the GNU General Public License see the GPL.txt file
+ */
+
+#ifndef __DISTRHO_PLUGIN_3BANDEQ_HPP__
+#define __DISTRHO_PLUGIN_3BANDEQ_HPP__
+
+#include "DistrhoPlugin.hpp"
+
+extern "C" {
+#include "nekobee-src/nekobee_types.h"
+}
+
+START_NAMESPACE_DISTRHO
+
+class DistrhoPluginNekobi : public Plugin
+{
+public:
+    enum Parameters
+    {
+        paramWaveform = 0,
+        paramTuning,
+        paramCutoff,
+        paramResonance,
+        paramEnvMod,
+        paramDecay,
+        paramAccent,
+        paramVolume,
+        paramCount
+    };
+
+    DistrhoPluginNekobi();
+    ~DistrhoPluginNekobi();
+
+protected:
+    // ---------------------------------------------
+    // Information
+
+    const char* d_label() const
+    {
+        return "Nekobi";
+    }
+
+    const char* d_maker() const
+    {
+        return "DISTRHO";
+    }
+
+    const char* d_license() const
+    {
+        return "GPL v2+";
+    }
+
+    uint32_t d_version() const
+    {
+        return 0x1000;
+    }
+
+    long d_uniqueId() const
+    {
+        return d_cconst('D', 'N', 'e', 'k');
+    }
+
+    // ---------------------------------------------
+    // Init
+
+    void d_initParameter(uint32_t index, Parameter& parameter);
+    void d_initProgramName(uint32_t index, d_string& programName);
+
+    // ---------------------------------------------
+    // Internal data
+
+    float d_parameterValue(uint32_t index);
+    void  d_setParameterValue(uint32_t index, float value);
+    void  d_setProgram(uint32_t index);
+
+    // ---------------------------------------------
+    // Process
+
+    void d_activate();
+    void d_deactivate();
+    void d_run(float** inputs, float** outputs, uint32_t frames, uint32_t midiEventCount, const MidiEvent* midiEvents);
+
+    // ---------------------------------------------
+
+private:
+    struct ParamValues {
+        float waveform;
+        float tuning;
+        float cutoff;
+        float resonance;
+        float envMod;
+        float decay;
+        float accent;
+        float volume;
+    } fParams;
+
+    nekobee_synth_t* fSynth;
+};
+
+END_NAMESPACE_DISTRHO
+
+#endif  // __DISTRHO_PLUGIN_3BANDEQ_HPP__

source/backend/native/nekobi/DistrhoUINekobi.cpp

@@ -0,0 +1,279 @@
+/*
+ * DISTRHO Nekobi Plugin, based on Nekobee by Sean Bolton and others.
+ * Copyright (C) 2013 Filipe Coelho <falktx@falktx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * For a full copy of the GNU General Public License see the GPL.txt file
+ */
+
+#include "DistrhoUINekobi.hpp"
+
+#include "dgl/ImageAboutWindow.hpp"
+
+START_NAMESPACE_DISTRHO
+
+// -------------------------------------------------
+
+DistrhoUINekobi::DistrhoUINekobi()
+    : OpenGLUI()
+{
+    Window* win = getParent();
+
+    fNeko.setTimerSpeed(4);
+
+    // background
+    fImgBackground = Image(DistrhoArtworkNekobi::backgroundData, DistrhoArtworkNekobi::backgroundWidth, DistrhoArtworkNekobi::backgroundHeight, GL_BGR);
+
+    // slider
+    Image sliderImage(DistrhoArtworkNekobi::sliderData, DistrhoArtworkNekobi::sliderWidth, DistrhoArtworkNekobi::sliderHeight);
+
+    fSliderWaveform = new ImageSlider(win, sliderImage);
+    fSliderWaveform->setStartPos(135, 39);
+    fSliderWaveform->setEndPos(135, 65);
+    fSliderWaveform->setRange(0.0f, 1.0f);
+    fSliderWaveform->setValue(0.0f);
+    fSliderWaveform->setCallback(this);
+
+    // knobs
+    Image knobImage(DistrhoArtworkNekobi::knobData, DistrhoArtworkNekobi::knobWidth, DistrhoArtworkNekobi::knobHeight);
+
+    // knob Tuning
+    fKnobTuning = new ImageKnob(win, knobImage);
+    fKnobTuning->setPos(44, 46);
+    fKnobTuning->setRange(-12.0f, 12.0f);
+    fKnobTuning->setValue(0.0f);
+    fKnobTuning->setCallback(this);
+
+    // knob Cutoff
+    fKnobCutoff = new ImageKnob(win, knobImage);
+    fKnobCutoff->setPos(187, 46);
+    fKnobCutoff->setRange(0.0f, 100.0f);
+    fKnobCutoff->setValue(25.0f);
+    fKnobCutoff->setCallback(this);
+
+    // knob Resonance
+    fKnobResonance = new ImageKnob(win, knobImage);
+    fKnobResonance->setPos(260, 46);
+    fKnobResonance->setRange(0.0f, 95.0f);
+    fKnobResonance->setValue(25.0f);
+    fKnobResonance->setCallback(this);
+
+    // knob Env Mod
+    fKnobEnvMod = new ImageKnob(win, knobImage);
+    fKnobEnvMod->setPos(332, 46);
+    fKnobEnvMod->setRange(0.0f, 100.0f);
+    fKnobEnvMod->setValue(50.0f);
+    fKnobEnvMod->setCallback(this);
+
+    // knob Decay
+    fKnobDecay = new ImageKnob(win, knobImage);
+    fKnobDecay->setPos(404, 46);
+    fKnobDecay->setRange(0.0f, 100.0f);
+    fKnobDecay->setValue(75.0f);
+    fKnobDecay->setCallback(this);
+
+    // knob Accent
+    fKnobAccent = new ImageKnob(win, knobImage);
+    fKnobAccent->setPos(476, 46);
+    fKnobAccent->setRange(0.0f, 100.0f);
+    fKnobAccent->setValue(25.0f);
+    fKnobAccent->setCallback(this);
+
+    // knob Volume
+    fKnobVolume = new ImageKnob(win, knobImage);
+    fKnobVolume->setPos(548, 46);
+    fKnobVolume->setRange(0.0f, 100.0f);
+    fKnobVolume->setValue(75.0f);
+    fKnobVolume->setCallback(this);
+}
+
+DistrhoUINekobi::~DistrhoUINekobi()
+{
+    delete fSliderWaveform;
+    delete fKnobTuning;
+    delete fKnobCutoff;
+    delete fKnobResonance;
+    delete fKnobEnvMod;
+    delete fKnobDecay;
+    delete fKnobAccent;
+    delete fKnobVolume;
+}
+
+// -------------------------------------------------
+// DSP Callbacks
+
+void DistrhoUINekobi::d_parameterChanged(uint32_t index, float value)
+{
+    switch (index)
+    {
+    case DistrhoPluginNekobi::paramTuning:
+        fKnobTuning->setValue(value);
+        break;
+    case DistrhoPluginNekobi::paramWaveform:
+        fSliderWaveform->setValue(value);
+        break;
+    case DistrhoPluginNekobi::paramCutoff:
+        fKnobCutoff->setValue(value);
+        break;
+    case DistrhoPluginNekobi::paramResonance:
+        fKnobResonance->setValue(value);
+        break;
+    case DistrhoPluginNekobi::paramEnvMod:
+        fKnobEnvMod->setValue(value);
+        break;
+    case DistrhoPluginNekobi::paramDecay:
+        fKnobDecay->setValue(value);
+        break;
+    case DistrhoPluginNekobi::paramAccent:
+        fKnobAccent->setValue(value);
+        break;
+    case DistrhoPluginNekobi::paramVolume:
+        fKnobVolume->setValue(value);
+        break;
+    }
+}
+
+void DistrhoUINekobi::d_programChanged(uint32_t index)
+{
+    if (index != 0)
+        return;
+
+    // Default values
+    fSliderWaveform->setValue(0.0f);
+    fKnobTuning->setValue(0.0f);
+    fKnobCutoff->setValue(25.0f);
+    fKnobResonance->setValue(25.0f);
+    fKnobEnvMod->setValue(50.0f);
+    fKnobDecay->setValue(75.0f);
+    fKnobAccent->setValue(25.0f);
+    fKnobVolume->setValue(50.0f);
+}
+
+void DistrhoUINekobi::d_noteReceived(bool onOff, uint8_t, uint8_t note, uint8_t)
+{
+    return;
+
+    (void)onOff;
+    (void)note;
+}
+
+// ---------------------------------------------
+// UI Callbacks
+
+void DistrhoUINekobi::d_uiIdle()
+{
+    if (fNeko.idle())
+        repaint();
+}
+
+// -------------------------------------------------
+// Widget Callbacks
+
+void DistrhoUINekobi::imageButtonClicked(ImageButton* button, int)
+{
+    (void)button;
+}
+
+void DistrhoUINekobi::imageKnobDragStarted(ImageKnob* knob)
+{
+    if (knob == fKnobTuning)
+        d_editParameter(DistrhoPluginNekobi::paramTuning, true);
+    else if (knob == fKnobCutoff)
+        d_editParameter(DistrhoPluginNekobi::paramCutoff, true);
+    else if (knob == fKnobResonance)
+        d_editParameter(DistrhoPluginNekobi::paramResonance, true);
+    else if (knob == fKnobEnvMod)
+        d_editParameter(DistrhoPluginNekobi::paramEnvMod, true);
+    else if (knob == fKnobDecay)
+        d_editParameter(DistrhoPluginNekobi::paramDecay, true);
+    else if (knob == fKnobAccent)
+        d_editParameter(DistrhoPluginNekobi::paramAccent, true);
+    else if (knob == fKnobVolume)
+        d_editParameter(DistrhoPluginNekobi::paramVolume, true);
+}
+
+void DistrhoUINekobi::imageKnobDragFinished(ImageKnob* knob)
+{
+    if (knob == fKnobTuning)
+        d_editParameter(DistrhoPluginNekobi::paramTuning, false);
+    else if (knob == fKnobCutoff)
+        d_editParameter(DistrhoPluginNekobi::paramCutoff, false);
+    else if (knob == fKnobResonance)
+        d_editParameter(DistrhoPluginNekobi::paramResonance, false);
+    else if (knob == fKnobEnvMod)
+        d_editParameter(DistrhoPluginNekobi::paramEnvMod, false);
+    else if (knob == fKnobDecay)
+        d_editParameter(DistrhoPluginNekobi::paramDecay, false);
+    else if (knob == fKnobAccent)
+        d_editParameter(DistrhoPluginNekobi::paramAccent, false);
+    else if (knob == fKnobVolume)
+        d_editParameter(DistrhoPluginNekobi::paramVolume, false);
+}
+
+void DistrhoUINekobi::imageKnobValueChanged(ImageKnob* knob, float value)
+{
+    if (knob == fKnobTuning)
+        d_setParameterValue(DistrhoPluginNekobi::paramTuning, value);
+    else if (knob == fKnobCutoff)
+        d_setParameterValue(DistrhoPluginNekobi::paramCutoff, value);
+    else if (knob == fKnobResonance)
+        d_setParameterValue(DistrhoPluginNekobi::paramResonance, value);
+    else if (knob == fKnobEnvMod)
+        d_setParameterValue(DistrhoPluginNekobi::paramEnvMod, value);
+    else if (knob == fKnobDecay)
+        d_setParameterValue(DistrhoPluginNekobi::paramDecay, value);
+    else if (knob == fKnobAccent)
+        d_setParameterValue(DistrhoPluginNekobi::paramAccent, value);
+    else if (knob == fKnobVolume)
+        d_setParameterValue(DistrhoPluginNekobi::paramVolume, value);
+}
+
+void DistrhoUINekobi::imageSliderDragStarted(ImageSlider* slider)
+{
+    if (slider != fSliderWaveform)
+        return;
+
+    d_editParameter(DistrhoPluginNekobi::paramWaveform, true);
+}
+
+void DistrhoUINekobi::imageSliderDragFinished(ImageSlider* slider)
+{
+    if (slider != fSliderWaveform)
+        return;
+
+    d_editParameter(DistrhoPluginNekobi::paramWaveform, false);
+}
+
+void DistrhoUINekobi::imageSliderValueChanged(ImageSlider* slider, float value)
+{
+    if (slider != fSliderWaveform)
+        return;
+
+    d_setParameterValue(DistrhoPluginNekobi::paramWaveform, value);
+}
+
+void DistrhoUINekobi::onDisplay()
+{
+    fImgBackground.draw();
+    fNeko.draw();
+}
+
+// -------------------------------------------------
+
+UI* createUI()
+{
+    return new DistrhoUINekobi();
+}
+
+// -------------------------------------------------
+
+END_NAMESPACE_DISTRHO

source/backend/native/nekobi/DistrhoUINekobi.hpp

@@ -0,0 +1,101 @@
+/*
+ * DISTRHO Nekobi Plugin, based on Nekobee by Sean Bolton and others.
+ * Copyright (C) 2013 Filipe Coelho <falktx@falktx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * For a full copy of the GNU General Public License see the GPL.txt file
+ */
+
+#ifndef __DISTRHO_UI_3BANDEQ_HPP__
+#define __DISTRHO_UI_3BANDEQ_HPP__
+
+#include "DistrhoUIOpenGL.hpp"
+#include "dgl/ImageButton.hpp"
+#include "dgl/ImageKnob.hpp"
+#include "dgl/ImageSlider.hpp"
+
+#include "DistrhoArtworkNekobi.hpp"
+#include "DistrhoPluginNekobi.hpp"
+#include "NekoWidget.hpp"
+
+START_NAMESPACE_DISTRHO
+
+// -------------------------------------------------
+
+class DistrhoUINekobi : public OpenGLUI,
+                        public ImageButton::Callback,
+                        public ImageKnob::Callback,
+                        public ImageSlider::Callback
+{
+public:
+    DistrhoUINekobi();
+    ~DistrhoUINekobi() override;
+
+protected:
+    // ---------------------------------------------
+    // Information
+
+    unsigned int d_width() const override
+    {
+        return DistrhoArtworkNekobi::backgroundWidth;
+    }
+
+    unsigned int d_height() const override
+    {
+        return DistrhoArtworkNekobi::backgroundHeight;
+    }
+
+    // ---------------------------------------------
+    // DSP Callbacks
+
+    void d_parameterChanged(uint32_t index, float value) override;
+    void d_programChanged(uint32_t index) override;
+    void d_noteReceived(bool onOff, uint8_t channel, uint8_t note, uint8_t velocity) override;
+
+    // ---------------------------------------------
+    // UI Callbacks
+
+    void d_uiIdle() override;
+
+    // ---------------------------------------------
+    // Widget Callbacks
+
+    void imageButtonClicked(ImageButton* button, int) override;
+    void imageKnobDragStarted(ImageKnob* knob) override;
+    void imageKnobDragFinished(ImageKnob* knob) override;
+    void imageKnobValueChanged(ImageKnob* knob, float value) override;
+    void imageSliderDragStarted(ImageSlider* slider) override;
+    void imageSliderDragFinished(ImageSlider* slider) override;
+    void imageSliderValueChanged(ImageSlider* slider, float value) override;
+
+    void onDisplay() override;
+
+private:
+    Image      fImgBackground;
+    NekoWidget fNeko;
+
+    ImageKnob* fKnobTuning;
+    ImageKnob* fKnobCutoff;
+    ImageKnob* fKnobResonance;
+    ImageKnob* fKnobEnvMod;
+    ImageKnob* fKnobDecay;
+    ImageKnob* fKnobAccent;
+    ImageKnob* fKnobVolume;
+
+    ImageSlider* fSliderWaveform;
+};
+
+// -------------------------------------------------
+
+END_NAMESPACE_DISTRHO
+
+#endif // __DISTRHO_UI_3BANDEQ_HPP__

source/backend/native/nekobi/NekoWidget.hpp

@@ -0,0 +1,191 @@
+/*
+ * Carla Tests
+ * Copyright (C) 2013 Filipe Coelho <falktx@falktx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * For a full copy of the GNU General Public License see the GPL.txt file
+ */
+
+#include "dgl/Image.hpp"
+#include "dgl/Widget.hpp"
+
+#include <cstdlib> // rand
+
+#include "DistrhoArtworkNekobi.hpp"
+
+USE_NAMESPACE_DGL;
+
+class NekoWidget
+{
+public:
+    NekoWidget()
+        : fPos(0),
+          fTimer(0),
+          fTimerSpeed(20),
+          fCurAction(kActionNone),
+          fCurImage(&fImages.sit)
+    {
+        // load images
+        {
+            using namespace DistrhoArtworkNekobi;
+
+            #define JOIN(a, b) a ## b
+            #define LOAD_IMAGE(NAME) fImages.NAME.loadFromMemory(JOIN(NAME, Data), JOIN(NAME, Width), JOIN(NAME, Height));
+
+            LOAD_IMAGE(sit)
+            LOAD_IMAGE(tail)
+            LOAD_IMAGE(claw1)
+            LOAD_IMAGE(claw2)
+            LOAD_IMAGE(scratch1)
+            LOAD_IMAGE(scratch2)
+            LOAD_IMAGE(run1)
+            LOAD_IMAGE(run2)
+            LOAD_IMAGE(run3)
+            LOAD_IMAGE(run4)
+
+            #undef JOIN
+            #undef LOAD_IMAGE
+        }
+    }
+
+    void draw()
+    {
+        int x = fPos+110;
+        int y = -2;
+
+        if (fCurImage == &fImages.claw1 || fCurImage == &fImages.claw2)
+        {
+            x += 2;
+            y += 12;
+        }
+
+        fCurImage->draw(x, y);
+    }
+
+    // returns true if needs repaint
+    bool idle()
+    {
+        if (++fTimer % fTimerSpeed != 0) // target is 20ms
+            return false;
+
+        if (fTimer == fTimerSpeed*9)
+        {
+            if (fCurAction == kActionNone)
+                fCurAction = static_cast<Action>(rand() % kActionCount);
+            else
+                fCurAction = kActionNone;
+
+            fTimer = 0;
+        }
+
+        switch (fCurAction)
+        {
+        case kActionNone:
+            if (fCurImage == &fImages.sit)
+                fCurImage = &fImages.tail;
+            else
+                fCurImage = &fImages.sit;
+            break;
+
+        case kActionClaw:
+            if (fCurImage == &fImages.claw1)
+                fCurImage = &fImages.claw2;
+            else
+                fCurImage = &fImages.claw1;
+            break;
+
+        case kActionScratch:
+            if (fCurImage == &fImages.scratch1)
+                fCurImage = &fImages.scratch2;
+            else
+                fCurImage = &fImages.scratch1;
+            break;
+
+        case kActionRunRight:
+            if (fTimer == 0 && fPos > 20*9)
+            {
+                // run the other way
+                --fTimer;
+                fCurAction = kActionRunLeft;
+                idle();
+                break;
+            }
+
+            fPos += 20;
+
+            if (fCurImage == &fImages.run1)
+                fCurImage = &fImages.run2;
+            else
+                fCurImage = &fImages.run1;
+            break;
+
+        case kActionRunLeft:
+            if (fTimer == 0 && fPos < 20*9)
+            {
+                // run the other way
+                --fTimer;
+                fCurAction = kActionRunRight;
+                idle();
+                break;
+            }
+
+            fPos -= 20;
+
+            if (fCurImage == &fImages.run3)
+                fCurImage = &fImages.run4;
+            else
+                fCurImage = &fImages.run3;
+            break;
+
+        case kActionCount:
+            break;
+        }
+
+        return true;
+    }
+
+    void setTimerSpeed(int speed)
+    {
+        fTimer = 0;
+        fTimerSpeed = speed;
+    }
+
+private:
+    enum Action {
+        kActionNone, // bounce tail
+        kActionClaw,
+        kActionScratch,
+        kActionRunRight,
+        kActionRunLeft,
+        kActionCount
+    };
+
+    struct Images {
+        Image sit;
+        Image tail;
+        Image claw1;
+        Image claw2;
+        Image scratch1;
+        Image scratch2;
+        Image run1;
+        Image run2;
+        Image run3;
+        Image run4;
+    } fImages;
+
+    int fPos;
+    int fTimer;
+    int fTimerSpeed;
+
+    Action fCurAction;
+    Image* fCurImage;
+};

source/backend/native/nekobi/nekobee-src/nekobee.h

@@ -0,0 +1,77 @@
+/* nekobee DSSI software synthesizer plugin
+ *
+ * Copyright (C) 2004 Sean Bolton and others.
+ *
+ * Portions of this file may have come from Chris Cannam and Steve
+ * Harris's public domain DSSI example code.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#ifndef _XSYNTH_H
+#define _XSYNTH_H
+
+/* ==== debugging ==== */
+
+/* XSYNTH_DEBUG bits */
+#define XDB_DSSI   1   /* DSSI interface */
+#define XDB_AUDIO  2   /* audio output */
+#define XDB_NOTE   4   /* note on/off, voice allocation */
+#define XDB_DATA   8   /* plugin patchbank handling */
+#define GDB_MAIN  16   /* GUI main program flow */
+#define GDB_OSC   32   /* GUI OSC handling */
+#define GDB_IO    64   /* GUI patch file input/output */
+#define GDB_GUI  128   /* GUI GUI callbacks, updating, etc. */
+
+/* If you want debug information, define XSYNTH_DEBUG to the XDB_* bits you're
+ * interested in getting debug information about, bitwise-ORed together.
+ * Otherwise, leave it undefined. */
+// #define XSYNTH_DEBUG (1+8+16+32+64)
+
+//#define XSYNTH_DEBUG GDB_GUI + GDB_OSC
+
+// #define XSYNTH_DEBUG XDB_DSSI
+#ifdef XSYNTH_DEBUG
+
+#include <stdio.h>
+#define XSYNTH_DEBUG_INIT(x)
+#define XDB_MESSAGE(type, fmt...) { if (XSYNTH_DEBUG & type) fprintf(stderr, "nekobee-dssi.so" fmt); }
+#define GDB_MESSAGE(type, fmt...) { if (XSYNTH_DEBUG & type) fprintf(stderr, "nekobee_gtk" fmt); }
+// -FIX-:
+// #include "message_buffer.h"
+// #define XSYNTH_DEBUG_INIT(x)  mb_init(x)
+// #define XDB_MESSAGE(type, fmt...) { \-
+//     if (XSYNTH_DEBUG & type) { \-
+//         char _m[256]; \-
+//         snprintf(_m, 255, fmt); \-
+//         add_message(_m); \-
+//     } \-
+// }
+
+#else  /* !XSYNTH_DEBUG */
+
+#define XDB_MESSAGE(type, fmt...)
+#define GDB_MESSAGE(type, fmt...)
+#define XSYNTH_DEBUG_INIT(x)
+
+#endif  /* XSYNTH_DEBUG */
+
+/* ==== end of debugging ==== */
+
+#define XSYNTH_MAX_POLYPHONY     1
+#define XSYNTH_DEFAULT_POLYPHONY  1
+
+#endif /* _XSYNTH_H */

source/backend/native/nekobi/nekobee-src/nekobee_synth.c

@@ -0,0 +1,236 @@
+/* nekobee DSSI software synthesizer plugin
+ *
+ * Copyright (C) 2004 Sean Bolton and others.
+ *
+ * Portions of this file may have come from Steve Brookes'
+ * nekobee, copyright (C) 1999 S. J. Brookes.
+ * Portions of this file may have come from Peter Hanappe's
+ * Fluidsynth, copyright (C) 2003 Peter Hanappe and others.
+ * Portions of this file may have come from Chris Cannam and Steve
+ * Harris's public domain DSSI example code.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+#include <pthread.h>
+
+#include "nekobee.h"
+#include "nekobee_synth.h"
+#include "nekobee_voice.h"
+
+/*
+ * nekobee_synth_all_voices_off
+ *
+ * stop processing all notes immediately
+ */
+void
+nekobee_synth_all_voices_off(nekobee_synth_t *synth)
+{
+    int i;
+    nekobee_voice_t *voice;
+
+    for (i = 0; i < synth->voices; i++) {
+        //voice = synth->voice[i];
+        voice = synth->voice;
+        if (_PLAYING(voice)) {
+            nekobee_voice_off(voice);
+        }
+    }
+    for (i = 0; i < 8; i++) synth->held_keys[i] = -1;
+}
+
+/*
+ * nekobee_synth_note_off
+ *
+ * handle a note off message
+ */
+void
+nekobee_synth_note_off(nekobee_synth_t *synth, unsigned char key, unsigned char rvelocity)
+{
+    int i, count = 0;
+    nekobee_voice_t *voice;
+
+    for (i = 0; i < synth->voices; i++) {
+        voice = synth->voice;
+        if (_PLAYING(voice)) {
+            XDB_MESSAGE(XDB_NOTE, " nekobee_synth_note_off: key %d rvel %d voice %d note id %d\n", key, rvelocity, i, voice->note_id);
+            nekobee_voice_note_off(synth, voice, key, 64);
+            count++;
+        }
+    }
+
+    if (!count)
+        nekobee_voice_remove_held_key(synth, key);
+
+    return;
+    (void)rvelocity;
+}
+
+/*
+ * nekobee_synth_all_notes_off
+ *
+ * put all notes into the released state
+ */
+void
+nekobee_synth_all_notes_off(nekobee_synth_t* synth)
+{
+    int i;
+    nekobee_voice_t *voice;
+
+    /* reset the sustain controller */
+    synth->cc[MIDI_CTL_SUSTAIN] = 0;
+    for (i = 0; i < synth->voices; i++) {
+        //voice = synth->voice[i];
+        voice = synth->voice;
+        if (_ON(voice) || _SUSTAINED(voice)) {
+            nekobee_voice_release_note(synth, voice);
+        }
+    }
+}
+
+/*
+ * nekobee_synth_note_on
+ */
+void
+nekobee_synth_note_on(nekobee_synth_t *synth, unsigned char key, unsigned char velocity)
+{
+    nekobee_voice_t* voice;
+
+    voice = synth->voice;
+    if (_PLAYING(synth->voice)) {
+        XDB_MESSAGE(XDB_NOTE, " nekobee_synth_note_on: retriggering mono voice on new key %d\n", key);
+    }
+
+    voice->note_id = synth->note_id++;
+
+    nekobee_voice_note_on(synth, voice, key, velocity);
+}
+
+/*
+ * nekobee_synth_update_volume
+ */
+void
+nekobee_synth_update_volume(nekobee_synth_t* synth)
+{
+    synth->cc_volume = (float)(synth->cc[MIDI_CTL_MSB_MAIN_VOLUME] * 128 +
+                               synth->cc[MIDI_CTL_LSB_MAIN_VOLUME]) / 16256.0f;
+    if (synth->cc_volume > 1.0f)
+        synth->cc_volume = 1.0f;
+    /* don't need to check if any playing voices need updating, because it's global */
+}
+
+/*
+ * nekobee_synth_control_change
+ */
+void
+nekobee_synth_control_change(nekobee_synth_t *synth, unsigned int param, signed int value)
+{
+    synth->cc[param] = value;
+
+    switch (param) {
+
+      case MIDI_CTL_MSB_MAIN_VOLUME:
+      case MIDI_CTL_LSB_MAIN_VOLUME:
+        nekobee_synth_update_volume(synth);
+        break;
+      case MIDI_CTL_ALL_SOUNDS_OFF:
+        nekobee_synth_all_voices_off(synth);
+        break;
+
+      case MIDI_CTL_RESET_CONTROLLERS:
+        nekobee_synth_init_controls(synth);
+        break;
+
+      case MIDI_CTL_ALL_NOTES_OFF:
+        nekobee_synth_all_notes_off(synth);
+        break;
+
+      /* what others should we respond to? */
+
+      /* these we ignore (let the host handle):
+       *  BANK_SELECT_MSB
+       *  BANK_SELECT_LSB
+       *  DATA_ENTRY_MSB
+       *  NRPN_MSB
+       *  NRPN_LSB
+       *  RPN_MSB
+       *  RPN_LSB
+       * -FIX- no! we need RPN (0, 0) Pitch Bend Sensitivity!
+       */
+    }
+}
+
+/*
+ * nekobee_synth_init_controls
+ */
+void
+nekobee_synth_init_controls(nekobee_synth_t *synth)
+{
+    int i;
+
+    for (i = 0; i < 128; i++) {
+        synth->cc[i] = 0;
+    }
+
+    synth->cc[7] = 127;                  /* full volume */
+    nekobee_synth_update_volume(synth);
+}
+
+/*
+ * nekobee_synth_render_voices
+ */
+void
+nekobee_synth_render_voices(nekobee_synth_t *synth, float *out, unsigned long sample_count,
+                        int do_control_update)
+{
+    unsigned long i;
+    float res, wow;
+
+    /* clear the buffer */
+    for (i = 0; i < sample_count; i++)
+        out[i] = 0.0f;
+
+    // we can do anything that must be updated all the time here
+    // this is called even when a voice isn't playing
+
+    // approximate a log scale
+    res = 1-synth->resonance;
+    wow = res*res;
+    wow = wow/10.0f;
+
+    // as the resonance is increased, "wow" slows down the accent attack
+    if ((synth->voice->velocity>90) && (synth->vcf_accent < synth->voice->vcf_eg)) {
+        synth->vcf_accent=(0.985-wow)*synth->vcf_accent+(0.015+wow)*synth->voice->vcf_eg;
+    } else {
+        synth->vcf_accent=(0.985-wow)*synth->vcf_accent;	// or just decay
+    }
+
+    if (synth->voice->velocity>90) {
+        synth->vca_accent=0.95*synth->vca_accent+0.05; // ramp up accent on with a time constant
+    } else {
+        synth->vca_accent=0.95*synth->vca_accent;       // accent off with time constant
+    }
+#if defined(XSYNTH_DEBUG) && (XSYNTH_DEBUG & XDB_AUDIO)
+     out[0] += 0.10f; /* add a 'buzz' to output so there's something audible even when quiescent */
+#endif /* defined(XSYNTH_DEBUG) && (XSYNTH_DEBUG & XDB_AUDIO) */
+    if (_PLAYING(synth->voice)) {
+        nekobee_voice_render(synth, synth->voice, out, sample_count, do_control_update);
+    }
+}

source/backend/native/nekobi/nekobee-src/nekobee_synth.h

@@ -0,0 +1,132 @@
+/* nekobee DSSI software synthesizer plugin
+ *
+ * Copyright (C) 2004 Sean Bolton and others.
+ *
+ * Portions of this file may have come from Peter Hanappe's
+ * Fluidsynth, copyright (C) 2003 Peter Hanappe and others.
+ * Portions of this file may have come from alsa-lib, copyright
+ * and licensed under the LGPL v2.1.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#ifndef _XSYNTH_SYNTH_H
+#define _XSYNTH_SYNTH_H
+
+#include <pthread.h>
+
+#include "nekobee.h"
+#include "nekobee_types.h"
+
+#define XSYNTH_MONO_MODE_OFF  0
+#define XSYNTH_MONO_MODE_ON   1
+#define XSYNTH_MONO_MODE_ONCE 2
+#define XSYNTH_MONO_MODE_BOTH 3
+
+#define XSYNTH_GLIDE_MODE_LEGATO   0
+#define XSYNTH_GLIDE_MODE_INITIAL  1
+#define XSYNTH_GLIDE_MODE_ALWAYS   2
+#define XSYNTH_GLIDE_MODE_LEFTOVER 3
+#define XSYNTH_GLIDE_MODE_OFF      4
+
+/*
+ * nekobee_synth_t
+ */
+struct _nekobee_synth_t {
+    /* output */
+    unsigned long   sample_rate;
+    float           deltat;            /* 1 / sample_rate */
+    unsigned long   nugget_remains;
+
+    /* voice tracking and data */
+    unsigned int    note_id;           /* incremented for every new note, used for voice-stealing prioritization */
+    int             polyphony;         /* requested polyphony, must be <= XSYNTH_MAX_POLYPHONY */
+    int             voices;            /* current polyphony, either requested polyphony above or 1 while in monophonic mode */
+    int             monophonic;        /* true if operating in monophonic mode */
+    int             glide;             /* current glide mode */
+    float           last_noteon_pitch; /* glide start pitch for non-legato modes */
+    signed char     held_keys[8];      /* for monophonic key tracking, an array of note-ons, most recently received first */
+    float           vcf_accent;        /* used to emulate the circuit that sweeps the vcf at full resonance */
+    float           vca_accent;        /* used to smooth the accent pulse, removing the click */
+
+    //nekobee_voice_t *voice[XSYNTH_MAX_POLYPHONY];
+    nekobee_voice_t *voice;
+    pthread_mutex_t voicelist_mutex;
+    int             voicelist_mutex_grab_failed;
+
+    /* current non-paramter-mapped controller values */
+    unsigned char   key_pressure[128];
+    unsigned char   cc[128];                  /* controller values */
+    unsigned char   channel_pressure;
+    unsigned char   pitch_wheel_sensitivity;  /* in semitones */
+    int             pitch_wheel;              /* range is -8192 - 8191 */
+
+    /* translated controller values */
+    float           mod_wheel;                /* filter cutoff multiplier, off = 1.0, full on = 0.0 */
+    float           pitch_bend;               /* frequency multiplier, product of wheel setting and sensitivity, center = 1.0 */
+    float           cc_volume;                /* volume multiplier, 0.0 to 1.0 */
+
+    /* patch parameters */
+    float          tuning;
+    float          waveform;
+    float          cutoff;
+    float          resonance;
+    float          envmod;
+    float          decay;
+    float          accent;
+    float          volume;
+};
+
+void nekobee_synth_all_voices_off(nekobee_synth_t *synth);
+void nekobee_synth_note_off(nekobee_synth_t *synth, unsigned char key,
+                            unsigned char rvelocity);
+void nekobee_synth_all_notes_off(nekobee_synth_t *synth);
+void nekobee_synth_note_on(nekobee_synth_t *synth, unsigned char key,
+                           unsigned char velocity);
+void nekobee_synth_control_change(nekobee_synth_t *synth, unsigned int param,
+                                  signed int value);
+void nekobee_synth_init_controls(nekobee_synth_t *synth);
+void nekobee_synth_render_voices(nekobee_synth_t *synth, float *out,
+                                 unsigned long sample_count,
+                                 int do_control_update);
+
+/* these come right out of alsa/asoundef.h */
+#define MIDI_CTL_MSB_MODWHEEL           0x01    /**< Modulation */
+#define MIDI_CTL_MSB_PORTAMENTO_TIME    0x05    /**< Portamento time */
+#define MIDI_CTL_MSB_MAIN_VOLUME        0x07    /**< Main volume */
+#define MIDI_CTL_MSB_BALANCE            0x08    /**< Balance */
+#define MIDI_CTL_LSB_MODWHEEL           0x21    /**< Modulation */
+#define MIDI_CTL_LSB_PORTAMENTO_TIME    0x25    /**< Portamento time */
+#define MIDI_CTL_LSB_MAIN_VOLUME        0x27    /**< Main volume */
+#define MIDI_CTL_LSB_BALANCE            0x28    /**< Balance */
+#define MIDI_CTL_SUSTAIN                0x40    /**< Sustain pedal */
+
+// nekobee defines
+#define MIDI_CTL_TUNING                 0x4b    // impossible
+#define MIDI_CTL_WAVEFORM               0x46    // select waveform
+#define MIDI_CTL_CUTOFF                 0x4a    // VCF Cutoff
+#define MIDI_CTL_RESONANCE              0x47    // VCF Resonance
+#define MIDI_CTL_ENVMOD                 0x01    // cheat and use modwheel
+#define MIDI_CTL_DECAY                  0x48    // Decay time (well release really)
+#define MIDI_CTL_ACCENT                 0x4c    // impossible
+
+#define MIDI_CTL_ALL_SOUNDS_OFF         0x78    /**< All sounds off */
+#define MIDI_CTL_RESET_CONTROLLERS      0x79    /**< Reset Controllers */
+#define MIDI_CTL_ALL_NOTES_OFF          0x7b    /**< All notes off */
+
+#define XSYNTH_SYNTH_SUSTAINED(_s)  ((_s)->cc[MIDI_CTL_SUSTAIN] >= 64)
+
+#endif /* _XSYNTH_SYNTH_H */

source/backend/native/nekobi/nekobee-src/nekobee_types.h

@@ -0,0 +1,30 @@
+/* nekobee DSSI software synthesizer plugin
+ *
+ * Copyright (C) 2004 Sean Bolton and others.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#ifndef _XSYNTH_TYPES_H
+#define _XSYNTH_TYPES_H
+
+#include <stddef.h>
+
+typedef struct _nekobee_synth_t nekobee_synth_t;
+typedef struct _nekobee_voice_t nekobee_voice_t;
+typedef struct _nekobee_patch_t nekobee_patch_t;
+
+#endif /* _XSYNTH_TYPES_H */

source/backend/native/nekobi/nekobee-src/nekobee_voice.c

@@ -0,0 +1,256 @@
+/* nekobee DSSI software synthesizer plugin
+ *
+ * Copyright (C) 2004 Sean Bolton and others.
+ *
+ * Portions of this file may have come from Steve Brookes'
+ * nekobee, copyright (C) 1999 S. J. Brookes.
+ * Portions of this file may have come from Peter Hanappe's
+ * Fluidsynth, copyright (C) 2003 Peter Hanappe and others.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#define _BSD_SOURCE    1
+#define _SVID_SOURCE   1
+#define _ISOC99_SOURCE 1
+
+#include <stdlib.h>
+
+#include "nekobee_types.h"
+#include "nekobee.h"
+#include "nekobee_synth.h"
+#include "nekobee_voice.h"
+
+/*
+ * nekobee_voice_new
+ */
+nekobee_voice_t *
+nekobee_voice_new()
+{
+    nekobee_voice_t *voice;
+
+    voice = (nekobee_voice_t *)calloc(sizeof(nekobee_voice_t), 1);
+    if (voice) {
+        voice->status = XSYNTH_VOICE_OFF;
+    }
+    return voice;
+}
+
+/*
+ * nekobee_voice_note_on
+ */
+void
+nekobee_voice_note_on(nekobee_synth_t *synth, nekobee_voice_t *voice,
+                     unsigned char key, unsigned char velocity)
+{
+    int i;
+
+    voice->key      = key;
+    voice->velocity = velocity;
+
+
+   if (!synth->monophonic || !(_ON(voice) || _SUSTAINED(voice))) {
+
+        // brand-new voice, or monophonic voice in release phase; set everything up 
+        XDB_MESSAGE(XDB_NOTE, " nekobee_voice_note_on in polyphonic/new section: key %d, mono %d, old status %d\n", key, synth->monophonic, voice->status);
+
+        voice->target_pitch = nekobee_pitch[key];
+        
+
+            if (synth->held_keys[0] >= 0) {
+                voice->prev_pitch = nekobee_pitch[synth->held_keys[0]];
+            } else {
+                voice->prev_pitch = voice->target_pitch;
+            }
+        
+        if (!_PLAYING(voice)) {
+            voice->lfo_pos = 0.0f;
+            voice->vca_eg = 0.0f;
+            voice->vcf_eg = 0.0f;
+            voice->delay1 = 0.0f;
+            voice->delay2 = 0.0f;
+            voice->delay3 = 0.0f;
+            voice->delay4 = 0.0f;
+            voice->c5     = 0.0f;
+            voice->osc_index = 0;
+            voice->osc1.last_waveform = -1;
+            voice->osc1.pos = 0.0f;
+			
+        }
+        voice->vca_eg_phase = 0;
+        voice->vcf_eg_phase = 0;
+//        nekobee_voice_update_pressure_mod(synth, voice);
+
+    } else {
+
+        /* synth is monophonic, and we're modifying a playing voice */
+        XDB_MESSAGE(XDB_NOTE, " nekobee_voice_note_on in monophonic section: old key %d => new key %d\n", synth->held_keys[0], key);
+
+        /* set new pitch */
+        voice->target_pitch = nekobee_pitch[key];
+        if (synth->glide == XSYNTH_GLIDE_MODE_INITIAL ||
+            synth->glide == XSYNTH_GLIDE_MODE_OFF)
+            voice->prev_pitch = voice->target_pitch;
+
+        /* if in 'on' or 'both' modes, and key has changed, then re-trigger EGs */
+        if ((synth->monophonic == XSYNTH_MONO_MODE_ON ||
+             synth->monophonic == XSYNTH_MONO_MODE_BOTH) &&
+            (synth->held_keys[0] < 0 || synth->held_keys[0] != key)) {
+            voice->vca_eg_phase = 0;
+            voice->vcf_eg_phase = 0;
+        }
+
+        /* all other variables stay what they are */
+
+    }
+    synth->last_noteon_pitch = voice->target_pitch;
+
+    /* add new key to the list of held keys */
+
+    /* check if new key is already in the list; if so, move it to the
+     * top of the list, otherwise shift the other keys down and add it
+     * to the top of the list. */
+    for (i = 0; i < 7; i++) {
+        if (synth->held_keys[i] == key)
+            break;
+    }
+    for (; i > 0; i--) {
+        synth->held_keys[i] = synth->held_keys[i - 1];
+    }
+    synth->held_keys[0] = key;
+
+    if (!_PLAYING(voice)) {
+
+        nekobee_voice_start_voice(voice);
+
+    } else if (!_ON(voice)) {  /* must be XSYNTH_VOICE_SUSTAINED or XSYNTH_VOICE_RELEASED */
+
+        voice->status = XSYNTH_VOICE_ON;
+
+    }
+}
+
+/*
+ * nekobee_voice_set_release_phase
+ */
+static inline void
+nekobee_voice_set_release_phase(nekobee_voice_t *voice)
+{
+    voice->vca_eg_phase = 2;
+    voice->vcf_eg_phase = 2;
+}
+
+/*
+ * nekobee_voice_remove_held_key
+ */
+inline void
+nekobee_voice_remove_held_key(nekobee_synth_t *synth, unsigned char key)
+{
+    int i;
+
+    /* check if this key is in list of held keys; if so, remove it and
+     * shift the other keys up */
+    for (i = 7; i >= 0; i--) {
+        if (synth->held_keys[i] == key)
+            break;
+    }
+    if (i >= 0) {
+        for (; i < 7; i++) {
+            synth->held_keys[i] = synth->held_keys[i + 1];
+        }
+        synth->held_keys[7] = -1;
+    }
+}
+
+/*
+ * nekobee_voice_note_off
+ */
+void
+nekobee_voice_note_off(nekobee_synth_t *synth, nekobee_voice_t *voice,
+                      unsigned char key, unsigned char rvelocity)
+{
+    unsigned char previous_top_key;
+
+    XDB_MESSAGE(XDB_NOTE, " nekobee_set_note_off: called for voice %p, key %d\n", voice, key);
+
+    /* save release velocity */
+    voice->velocity = rvelocity;
+
+    previous_top_key = synth->held_keys[0];
+
+    /* remove this key from list of held keys */
+    nekobee_voice_remove_held_key(synth, key);
+
+        if (synth->held_keys[0] >= 0) {
+
+            /* still some keys held */
+
+            if (synth->held_keys[0] != previous_top_key) {
+
+                /* most-recently-played key has changed */
+                voice->key = synth->held_keys[0];
+                XDB_MESSAGE(XDB_NOTE, " note-off in monophonic section: changing pitch to %d\n", voice->key);
+                voice->target_pitch = nekobee_pitch[voice->key];
+                if (synth->glide == XSYNTH_GLIDE_MODE_INITIAL ||
+                    synth->glide == XSYNTH_GLIDE_MODE_OFF)
+                    voice->prev_pitch = voice->target_pitch;
+
+                /* if mono mode is 'both', re-trigger EGs */
+                if (synth->monophonic == XSYNTH_MONO_MODE_BOTH && !_RELEASED(voice)) {
+                    voice->vca_eg_phase = 0;
+                    voice->vcf_eg_phase = 0;
+                }
+
+            }
+
+        } else {  /* no keys still held */
+
+            if (XSYNTH_SYNTH_SUSTAINED(synth)) {
+
+                /* no more keys in list, but we're sustained */
+                XDB_MESSAGE(XDB_NOTE, " note-off in monophonic section: sustained with no held keys\n");
+                if (!_RELEASED(voice))
+                    voice->status = XSYNTH_VOICE_SUSTAINED;
+
+            } else {  /* not sustained */
+
+                /* no more keys in list, so turn off note */
+                XDB_MESSAGE(XDB_NOTE, " note-off in monophonic section: turning off voice %p\n", voice);
+                nekobee_voice_set_release_phase(voice);
+                voice->status = XSYNTH_VOICE_RELEASED;
+
+            }
+        }
+
+}
+
+/*
+ * nekobee_voice_release_note
+ */
+void
+nekobee_voice_release_note(nekobee_synth_t *synth, nekobee_voice_t *voice)
+{
+    XDB_MESSAGE(XDB_NOTE, " nekobee_voice_release_note: turning off voice %p\n", voice);
+    if (_ON(voice)) {
+        /* dummy up a release velocity */
+        voice->rvelocity = 64;
+    }
+    nekobee_voice_set_release_phase(voice);
+    voice->status = XSYNTH_VOICE_RELEASED;
+
+    return;
+    (void)synth;
+}

source/backend/native/nekobi/nekobee-src/nekobee_voice.h

@@ -0,0 +1,183 @@
+/* nekobee DSSI software synthesizer plugin
+ *
+ * Copyright (C) 2004 Sean Bolton and others.
+ *
+ * Portions of this file may have come from Steve Brookes'
+ * nekobee, copyright (C) 1999 S. J. Brookes.
+ * Portions of this file may have come from Peter Hanappe's
+ * Fluidsynth, copyright (C) 2003 Peter Hanappe and others.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#ifndef _XSYNTH_VOICE_H
+#define _XSYNTH_VOICE_H
+
+#include <string.h>
+
+#include "nekobee_types.h"
+
+/* maximum size of a rendering burst */
+#define XSYNTH_NUGGET_SIZE      64
+
+/* minBLEP constants */
+/* minBLEP table oversampling factor (must be a power of two): */
+#define MINBLEP_PHASES          64
+/* MINBLEP_PHASES minus one: */
+#define MINBLEP_PHASE_MASK      63
+/* length in samples of (truncated) step discontinuity delta: */
+#define STEP_DD_PULSE_LENGTH    72
+/* length in samples of (truncated) slope discontinuity delta: */
+#define SLOPE_DD_PULSE_LENGTH   71
+/* the longer of the two above: */
+#define LONGEST_DD_PULSE_LENGTH STEP_DD_PULSE_LENGTH
+/* MINBLEP_BUFFER_LENGTH must be at least XSYNTH_NUGGET_SIZE plus
+ * LONGEST_DD_PULSE_LENGTH, and not less than twice LONGEST_DD_PULSE_LENGTH: */
+#define MINBLEP_BUFFER_LENGTH  512
+/* delay between start of DD pulse and the discontinuity, in samples: */
+#define DD_SAMPLE_DELAY          4
+
+struct _nekobee_patch_t
+{
+    float         tuning;
+    unsigned char waveform;
+    float         cutoff;
+    float         resonance;
+    float         envmod;
+    float         decay;
+    float         accent;
+    float         volume;
+};
+
+enum nekobee_voice_status
+{
+    XSYNTH_VOICE_OFF,       /* silent: is not processed by render loop */
+    XSYNTH_VOICE_ON,        /* has not received a note off event */
+    XSYNTH_VOICE_SUSTAINED, /* has received note off, but sustain controller is on */
+    XSYNTH_VOICE_RELEASED   /* had note off, not sustained, in final decay phase of envelopes */
+};
+
+struct blosc
+{
+    int   last_waveform,    /* persistent */
+          waveform,         /* comes from LADSPA port each cycle */
+          bp_high;          /* persistent */
+    float pos,              /* persistent */
+          pw;               /* comes from LADSPA port each cycle */
+};
+
+/*
+ * nekobee_voice_t
+ */
+struct _nekobee_voice_t
+{
+    unsigned int  note_id;
+
+    unsigned char status;
+    unsigned char key;
+    unsigned char velocity;
+    unsigned char rvelocity;   /* the note-off velocity */
+
+    /* translated controller values */
+    float         pressure;    /* filter resonance multiplier, off = 1.0, full on = 0.0 */
+
+    /* persistent voice state */
+    float         prev_pitch,
+                  target_pitch,
+                  lfo_pos;
+    struct blosc  osc1;
+    float         vca_eg,
+                  vcf_eg,
+                  accent_slug,
+                  delay1,
+                  delay2,
+                  delay3,
+                  delay4,
+                  c5;
+    unsigned char vca_eg_phase,
+                  vcf_eg_phase;
+    int           osc_index;       /* shared index into osc_audio */
+    float         osc_audio[MINBLEP_BUFFER_LENGTH];
+    float         freqcut_buf[XSYNTH_NUGGET_SIZE];
+    float         vca_buf[XSYNTH_NUGGET_SIZE];
+};
+
+#define _PLAYING(voice)    ((voice)->status != XSYNTH_VOICE_OFF)
+#define _ON(voice)         ((voice)->status == XSYNTH_VOICE_ON)
+#define _SUSTAINED(voice)  ((voice)->status == XSYNTH_VOICE_SUSTAINED)
+#define _RELEASED(voice)   ((voice)->status == XSYNTH_VOICE_RELEASED)
+#define _AVAILABLE(voice)  ((voice)->status == XSYNTH_VOICE_OFF)
+
+extern float nekobee_pitch[128];
+
+typedef struct { float value, delta; } float_value_delta;
+extern float_value_delta step_dd_table[];
+
+extern float slope_dd_table[];
+
+/* nekobee_voice.c */
+nekobee_voice_t *nekobee_voice_new();
+void             nekobee_voice_note_on(nekobee_synth_t *synth,
+                                     nekobee_voice_t *voice,
+                                     unsigned char key,
+                                     unsigned char velocity);
+void             nekobee_voice_remove_held_key(nekobee_synth_t *synth,
+                                             unsigned char key);
+void             nekobee_voice_note_off(nekobee_synth_t *synth,
+                                      nekobee_voice_t *voice,
+                                      unsigned char key,
+                                      unsigned char rvelocity);
+void             nekobee_voice_release_note(nekobee_synth_t *synth,
+                                          nekobee_voice_t *voice);
+void             nekobee_voice_set_ports(nekobee_synth_t *synth,
+                                       nekobee_patch_t *patch);
+void             nekobee_voice_update_pressure_mod(nekobee_synth_t *synth,
+                                                 nekobee_voice_t *voice);
+
+/* nekobee_voice_render.c */
+void nekobee_init_tables(void);
+void nekobee_voice_render(nekobee_synth_t *synth, nekobee_voice_t *voice,
+                         float *out, unsigned long sample_count,
+                         int do_control_update);
+
+/* inline functions */
+
+/*
+ * nekobee_voice_off
+ *
+ * Purpose: Turns off a voice immediately, meaning that it is not processed
+ * anymore by the render loop.
+ */
+static inline void
+nekobee_voice_off(nekobee_voice_t* voice)
+{
+    voice->status = XSYNTH_VOICE_OFF;
+    /* silence the oscillator buffer for the next use */
+    memset(voice->osc_audio, 0, MINBLEP_BUFFER_LENGTH * sizeof(float));
+    /* -FIX- decrement active voice count? */
+}
+
+/*
+ * nekobee_voice_start_voice
+ */
+static inline void
+nekobee_voice_start_voice(nekobee_voice_t *voice)
+{
+    voice->status = XSYNTH_VOICE_ON;
+    /* -FIX- increment active voice count? */
+}
+
+#endif /* _XSYNTH_VOICE_H */

source/backend/native/nekobi/nekobee-src/nekobee_voice_render.c

@@ -0,0 +1,410 @@
+/* nekobee DSSI software synthesizer plugin
+ */
+
+#define _BSD_SOURCE    1
+#define _SVID_SOURCE   1
+#define _ISOC99_SOURCE 1
+
+#include <math.h>
+
+#include "nekobee.h"
+#include "nekobee_synth.h"
+#include "nekobee_voice.h"
+
+#define M_2PI_F (2.0f * (float)M_PI)
+#define M_PI_F (float)M_PI
+
+#define VCF_FREQ_MAX  (0.825f)    /* original filters only stable to this frequency */
+
+static int   tables_initialized = 0;
+
+float        nekobee_pitch[128];
+
+#define pitch_ref_note 69
+
+#define volume_to_amplitude_scale 128
+
+static float volume_to_amplitude_table[4 + volume_to_amplitude_scale + 2];
+
+static float velocity_to_attenuation[128];
+
+static float qdB_to_amplitude_table[4 + 256 + 0];
+
+void
+nekobee_init_tables(void)
+{
+    int i;
+    float pexp;
+    float volume, volume_exponent;
+    float ol, amp;
+
+    if (tables_initialized)
+        return;
+
+    /* MIDI note to pitch */
+    for (i = 0; i < 128; ++i) {
+        pexp = (float)(i - pitch_ref_note) / 12.0f;
+        nekobee_pitch[i] = powf(2.0f, pexp);
+    }
+
+    /* volume to amplitude
+     *
+     * This generates a curve which is:
+     *  volume_to_amplitude_table[128 + 4] = 0.25 * 3.16...   ~=  -2dB
+     *  volume_to_amplitude_table[64 + 4]  = 0.25 * 1.0       ~= -12dB
+     *  volume_to_amplitude_table[32 + 4]  = 0.25 * 0.316...  ~= -22dB
+     *  volume_to_amplitude_table[16 + 4]  = 0.25 * 0.1       ~= -32dB
+     *   etc.
+     */
+    volume_exponent = 1.0f / (2.0f * log10f(2.0f));
+    for (i = 0; i <= volume_to_amplitude_scale; i++) {
+        volume = (float)i / (float)volume_to_amplitude_scale;
+        volume_to_amplitude_table[i + 4] = powf(2.0f * volume, volume_exponent) / 4.0f;
+    }
+    volume_to_amplitude_table[ -1 + 4] = 0.0f;
+    volume_to_amplitude_table[129 + 4] = volume_to_amplitude_table[128 + 4];
+
+    /* velocity to attenuation
+     *
+     * Creates the velocity to attenuation lookup table, for converting
+     * velocities [1, 127] to full-velocity-sensitivity attenuation in
+     * quarter decibels.  Modeled after my TX-7's velocity response.*/
+    velocity_to_attenuation[0] = 253.9999f;
+    for (i = 1; i < 127; i++) {
+        if (i >= 10) {
+            ol = (powf(((float)i / 127.0f), 0.32f) - 1.0f) * 100.0f;
+            amp = powf(2.0f, ol / 8.0f);
+        } else {
+            ol = (powf(((float)10 / 127.0f), 0.32f) - 1.0f) * 100.0f;
+            amp = powf(2.0f, ol / 8.0f) * (float)i / 10.0f;
+        }
+        velocity_to_attenuation[i] = log10f(amp) * -80.0f;
+    }
+    velocity_to_attenuation[127] = 0.0f;
+
+    /* quarter-decibel attenuation to amplitude */
+    qdB_to_amplitude_table[-1 + 4] = 1.0f;
+    for (i = 0; i <= 255; i++) {
+        qdB_to_amplitude_table[i + 4] = powf(10.0f, (float)i / -80.0f);
+    }
+
+    tables_initialized = 1;
+}
+
+static inline float
+volume(float level)
+{
+    unsigned char segment;
+    float fract;
+
+    level *= (float)volume_to_amplitude_scale;
+    segment = lrintf(level - 0.5f);
+    fract = level - (float)segment;
+
+    return volume_to_amplitude_table[segment + 4] + fract *
+               (volume_to_amplitude_table[segment + 5] -
+                volume_to_amplitude_table[segment + 4]);
+}
+
+static inline float
+qdB_to_amplitude(float qdB)
+{
+    int i = lrintf(qdB - 0.5f);
+    float f = qdB - (float)i;
+    return qdB_to_amplitude_table[i + 4] + f *
+           (qdB_to_amplitude_table[i + 5] -
+            qdB_to_amplitude_table[i + 4]);
+}
+
+void blosc_place_step_dd(float *buffer, int index, float phase, float w, float scale){
+    float r;
+    int i;
+
+    r = MINBLEP_PHASES * phase / w;
+    i = lrintf(r - 0.5f);
+    r -= (float)i;
+    i &= MINBLEP_PHASE_MASK;  /* port changes can cause i to be out-of-range */
+    /* This would be better than the above, but more expensive:
+     *  while (i < 0) {
+     *    i += MINBLEP_PHASES;
+     *    index++;
+     *  }
+     */
+
+    while (i < MINBLEP_PHASES * STEP_DD_PULSE_LENGTH) {
+        buffer[index] += scale * (step_dd_table[i].value + r * step_dd_table[i].delta);
+        i += MINBLEP_PHASES;
+        index++;
+    }
+}
+
+
+void vco(unsigned long sample_count, nekobee_voice_t *voice, struct blosc *osc,
+                int index, float w)
+
+{
+	unsigned long sample;
+	float pos = osc->pos;
+	float pw, gain, halfgain, out;
+	pw=0.46f;
+	gain=1.0f;
+	halfgain=gain*0.5f;
+	int   bp_high = osc->bp_high;
+	out=(bp_high ? halfgain : -halfgain);
+
+		switch (osc->waveform)
+		{
+		default:
+		case 0: {
+
+			for (sample = 0; sample < sample_count; sample++) {
+		pos += w;
+        if (bp_high) {
+            if (pos >= pw) {
+                blosc_place_step_dd(voice->osc_audio, index, pos - pw, w, -gain);
+                bp_high = 0;
+                out = -halfgain;
+            }
+            if (pos >= 1.0f) {
+                pos -= 1.0f;
+                blosc_place_step_dd(voice->osc_audio, index, pos, w, gain);
+                bp_high = 1;
+                out = halfgain;
+            }
+			} else {
+            if (pos >= 1.0f) {
+                pos -= 1.0f;
+                blosc_place_step_dd(voice->osc_audio, index, pos, w, gain);
+                bp_high = 1;
+                out = halfgain;
+            }
+
+            if (bp_high && pos >= pw) {
+                blosc_place_step_dd(voice->osc_audio, index, pos - pw, w, -gain);
+                bp_high = 0;
+                out = -halfgain;
+            }
+        }
+
+        voice->osc_audio[index + DD_SAMPLE_DELAY] += out;
+
+        index++;
+    }
+
+    osc->pos = pos;
+    osc->bp_high = bp_high;
+		break;
+	  }
+		case 1:   			// sawtooth wave
+		{
+			  for (sample=0; sample < sample_count; sample++) {
+        	  pos += w;
+              if (pos >= 1.0f) {
+				  pos -= 1.0f;
+				 blosc_place_step_dd(voice->osc_audio, index, pos, w, gain);
+			  }
+              voice->osc_audio[index + DD_SAMPLE_DELAY] += gain * (0.5f - pos);
+
+			  index++;
+		  }
+
+		  break;
+	  }
+
+	}
+
+        osc->pos=pos;
+}
+
+static inline void
+vcf_4pole(nekobee_voice_t *voice, unsigned long sample_count,
+          float *in, float *out, float *cutoff, float qres, float *amp)
+{
+    unsigned long sample;
+    float freqcut, freqcut2, highpass,
+          delay1 = voice->delay1,
+          delay2 = voice->delay2,
+          delay3 = voice->delay3,
+          delay4 = voice->delay4;
+
+    qres = 2.0f - qres * 1.995f;
+
+    for (sample = 0; sample < sample_count; sample++) {
+
+        /* Hal Chamberlin's state variable filter */
+
+        freqcut = cutoff[sample] * 2.0f;
+        freqcut2 = cutoff[sample] * 4.0f;
+
+
+        if (freqcut > VCF_FREQ_MAX) freqcut = VCF_FREQ_MAX;
+        if (freqcut2 > VCF_FREQ_MAX) freqcut2 = VCF_FREQ_MAX;
+
+        delay2 = delay2 + freqcut * delay1;             /* delay2/4 = lowpass output */
+        highpass = in[sample] - delay2 - qres * delay1;
+        delay1 = freqcut * highpass + delay1;           /* delay1/3 = bandpass output */
+
+        delay4 = delay4 + freqcut2 * delay3;
+        highpass = delay2 - delay4 - qres * delay3;
+        delay3 = freqcut2 * highpass + delay3;
+
+        /* mix filter output into output buffer */
+        out[sample] += 0.1*atan(3*delay4 * amp[sample]);
+    }
+
+    voice->delay1 = delay1;
+    voice->delay2 = delay2;
+    voice->delay3 = delay3;
+    voice->delay4 = delay4;
+    voice->c5 = 0.0f;
+}
+
+
+/*
+ * nekobee_voice_render
+ *
+ * generate the actual sound data for this voice
+ */
+void
+nekobee_voice_render(nekobee_synth_t *synth, nekobee_voice_t *voice,
+                    float *out, unsigned long sample_count,
+                    int do_control_update)
+{
+    unsigned long sample;
+
+    /* state variables saved in voice */
+    float         lfo_pos      = voice->lfo_pos,
+                  vca_eg       = voice->vca_eg,
+                  vcf_eg       = voice->vcf_eg;
+    unsigned char vca_eg_phase = voice->vca_eg_phase,
+                  vcf_eg_phase = voice->vcf_eg_phase;
+    int           osc_index    = voice->osc_index;
+
+    /* temporary variables used in calculating voice */
+    float fund_pitch;
+    float deltat = synth->deltat;
+    float freq, cutoff, vcf_amt;
+    float vcf_acc_amt;
+
+    /* set up synthesis variables from patch */
+    float         omega;
+    float         vca_eg_amp = qdB_to_amplitude(velocity_to_attenuation[voice->velocity] * 0);
+
+    float         vca_eg_rate_level[3], vca_eg_one_rate[3];
+    float         vcf_eg_amp = qdB_to_amplitude(velocity_to_attenuation[voice->velocity] * 0);
+
+    float         vcf_eg_rate_level[3], vcf_eg_one_rate[3];
+    float         qres = synth->resonance;
+    float         vol_out = volume(synth->volume);
+
+    float velocity = (voice->velocity);
+
+    float vcf_egdecay = synth->decay;
+
+    fund_pitch = 0.1f*voice->target_pitch  +0.9 * voice->prev_pitch;    /* glide */
+
+    if (do_control_update) {
+        voice->prev_pitch = fund_pitch; /* save pitch for next time */
+    }
+
+    fund_pitch *= 440.0f;
+
+    omega = synth->tuning * fund_pitch;
+
+    // if we have triggered ACCENT
+    // we need a shorter decay
+    // we should probably have something like this in the note on code
+    // that could trigger an ACCENT light
+    if (velocity>90) {
+            vcf_egdecay=.0005;
+    }
+
+    // VCA - In a real 303, it is set for around 2 seconds
+    vca_eg_rate_level[0] = 0.1f * vca_eg_amp;	// instant on attack
+    vca_eg_one_rate[0] = 0.9f;					// very fast
+    vca_eg_rate_level[1] = 0.0f; 					// sustain is zero
+    vca_eg_one_rate[1] = 1.0f - 0.00001f;		// decay time is very slow
+    vca_eg_rate_level[2] = 0.0f;				// decays to zero
+    vca_eg_one_rate[2] =  0.975f; 					// very fast release
+
+    // VCF - funny things go on with the accent
+
+    vcf_eg_rate_level[0] = 0.1f * vcf_eg_amp;
+    vcf_eg_one_rate[0] = 1-0.1f; //0.9f;
+    vcf_eg_rate_level[1] = 0.0f; // vcf_egdecay * *(synth->vcf_eg_sustain_level) * vcf_eg_amp;
+    vcf_eg_one_rate[1] = 1.0f - vcf_egdecay;
+    vcf_eg_rate_level[2] = 0.0f;
+    vcf_eg_one_rate[2] = 0.9995f; // 1.0f - *(synth->vcf_eg_release_time);
+
+    vca_eg_amp *= 0.99f;
+    vcf_eg_amp *= 0.99f;
+
+    freq = M_PI_F * deltat * fund_pitch * synth->mod_wheel;  /* now (0 to 1) * pi */
+
+    cutoff = 0.008f * synth->cutoff;
+
+    // 303 always has slight VCF mod
+    vcf_amt = 0.05f+(synth->envmod*0.75);
+
+    /* copy some things so oscillator functions can see them */
+    voice->osc1.waveform = lrintf(synth->waveform);
+
+    // work out how much the accent will affect the filter
+    vcf_acc_amt=.333f+ (synth->resonance/1.5f);
+
+    for (sample = 0; sample < sample_count; sample++) {
+        vca_eg = vca_eg_rate_level[vca_eg_phase] + vca_eg_one_rate[vca_eg_phase] * vca_eg;
+        vcf_eg = vcf_eg_rate_level[vcf_eg_phase] + vcf_eg_one_rate[vcf_eg_phase] * vcf_eg;
+
+        voice->freqcut_buf[sample] = (cutoff + (vcf_amt * vcf_eg/2.0f)  + (synth->vcf_accent * synth->accent*0.5f));
+
+        voice->vca_buf[sample] = vca_eg * vol_out*(1.0f + synth->accent*synth->vca_accent);
+
+        if (!vca_eg_phase && vca_eg > vca_eg_amp) vca_eg_phase = 1;  /* flip from attack to decay */
+        if (!vcf_eg_phase && vcf_eg > vcf_eg_amp) vcf_eg_phase = 1;  /* flip from attack to decay */
+    }
+
+    // oscillator
+    vco(sample_count, voice, &voice->osc1, osc_index, deltat * omega);
+
+    // VCF and VCA
+    vcf_4pole(voice, sample_count, voice->osc_audio + osc_index, out, voice->freqcut_buf, qres, voice->vca_buf);
+
+    osc_index += sample_count;
+
+    if (do_control_update) {
+        /* do those things should be done only once per control-calculation
+         * interval ("nugget"), such as voice check-for-dead, pitch envelope
+         * calculations, volume envelope phase transition checks, etc. */
+        /* check if we've decayed to nothing, turn off voice if so */
+        if (vca_eg_phase == 2 && voice->vca_buf[sample_count - 1] < 6.26e-6f) {
+            // sound has completed its release phase (>96dB below volume '5' max)
+            XDB_MESSAGE(XDB_NOTE, " nekobee_voice_render check for dead: killing note id %d\n", voice->note_id);
+            nekobee_voice_off(voice);
+            return; // we're dead now, so return
+        }
+
+        /* already saved prev_pitch above */
+
+        /* check oscillator audio buffer index, shift buffer if necessary */
+        if (osc_index > MINBLEP_BUFFER_LENGTH - (XSYNTH_NUGGET_SIZE + LONGEST_DD_PULSE_LENGTH)) {
+            memcpy(voice->osc_audio, voice->osc_audio + osc_index,
+                   LONGEST_DD_PULSE_LENGTH * sizeof (float));
+            memset(voice->osc_audio + LONGEST_DD_PULSE_LENGTH, 0,
+                   (MINBLEP_BUFFER_LENGTH - LONGEST_DD_PULSE_LENGTH) * sizeof (float));
+            osc_index = 0;
+        }
+    }
+
+    /* save things for next time around */
+    voice->lfo_pos      = lfo_pos;
+    voice->vca_eg       = vca_eg;
+    voice->vca_eg_phase = vca_eg_phase;
+    voice->vcf_eg       = vcf_eg;
+    voice->vcf_eg_phase = vcf_eg_phase;
+    voice->osc_index    = osc_index;
+
+    return;
+    (void)freq;
+    (void)vcf_acc_amt;
+}

source/backend/plugin/NativePlugin.cpp

@@ -60,6 +60,7 @@ void carla_register_all_plugins()
     // DISTRHO plugins (OpenGL)
     carla_register_native_plugin_3BandEQ();
     carla_register_native_plugin_3BandSplitter();
+    carla_register_native_plugin_Nekobi();
     carla_register_native_plugin_PingPongPan();
     carla_register_native_plugin_StereoEnhancer();
 #endif

source/libs/distrho/DistrhoPlugin.hpp

@@ -69,6 +69,16 @@ struct ParameterRanges {
         this->stepLarge = stepLarge;
     }
 
+    void clear()
+    {
+        def = 0.0f;
+        min = 0.0f;
+        max = 1.0f;
+        step = 0.001f;
+        stepSmall = 0.00001f;
+        stepLarge = 0.01f;
+    }
+
     void fixValue(float& value) const
     {
         if (value < min)
@@ -116,6 +126,15 @@ struct Parameter {
 
     Parameter()
         : hints(0x0) {}
+
+    void clear()
+    {
+        hints  = 0x0;
+        name   = "";
+        symbol = "";
+        unit   = "";
+        ranges.clear();
+    }
 };
 
 // -------------------------------------------------

source/libs/distrho/dgl/ImageSlider.hpp

@@ -42,7 +42,9 @@ public:
     float getValue() const;
 
     void setStartPos(const Point<int>& startPos);
+    void setStartPos(int x, int y);
     void setEndPos(const Point<int>& endPos);
+    void setEndPos(int x, int y);
 
     void setRange(float min, float max);
     void setValue(float value, bool sendCallback = false);

source/libs/distrho/dgl/src/ImageSlider.cpp

@@ -62,12 +62,22 @@ void ImageSlider::setStartPos(const Point<int>& startPos)
     _recheckArea();
 }
 
+void ImageSlider::setStartPos(int x, int y)
+{
+    setStartPos(Point<int>(x, y));
+}
+
 void ImageSlider::setEndPos(const Point<int>& endPos)
 {
     fEndPos = endPos;
     _recheckArea();
 }
 
+void ImageSlider::setEndPos(int x, int y)
+{
+    setEndPos(Point<int>(x, y));
+}
+
 void ImageSlider::setRange(float min, float max)
 {
     if (fValue < min)

source/libs/distrho/src/DistrhoUIInternal.hpp

@@ -227,12 +227,11 @@ public:
         // needed?
 #elif defined(DISTRHO_UI_OPENGL)
         glApp.idle();
-#else
+#endif
         assert(kUi != nullptr);
 
         if (kUi != nullptr)
             kUi->d_uiIdle();
-#endif
     }
 
 #if defined(DISTRHO_UI_EXTERNAL)