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Add carla plugin code

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falkTX 11 years ago
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229df759a3
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1 changed files with 471 additions and 0 deletions
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      distrho/src/DistrhoPluginCarla.cpp

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distrho/src/DistrhoPluginCarla.cpp View File

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/*
* DISTRHO Plugin Framework (DPF)
* Copyright (C) 2012-2014 Filipe Coelho <falktx@falktx.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation.
*
* 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 Lesser General Public License for more details.
*
* For a full copy of the license see the LGPL.txt file
*/

#include "DistrhoPluginInternal.hpp"

#if DISTRHO_PLUGIN_HAS_UI
# include "DistrhoUIInternal.hpp"
#endif

#include "CarlaNative.hpp"

// -----------------------------------------------------------------------

START_NAMESPACE_DISTRHO

#if DISTRHO_PLUGIN_HAS_UI
// -----------------------------------------------------------------------
// Carla UI

#if ! DISTRHO_PLUGIN_WANT_STATE
static const setStateFunc setStateCallback = nullptr;
#endif
#if ! DISTRHO_PLUGIN_IS_SYNTH
static const sendNoteFunc sendNoteCallback = nullptr;
#endif

class UICarla
{
public:
UICarla(const NativeHostDescriptor* const host, PluginExporter* const plugin)
: fHost(host),
fPlugin(plugin),
fUI(this, 0, editParameterCallback, setParameterCallback, setStateCallback, sendNoteCallback, uiResizeCallback)
{
fUI.setTitle(host->uiName);
}

// ---------------------------------------------

void carla_show(const bool yesNo)
{
fUI.setVisible(yesNo);
}

void carla_idle()
{
fUI.idle();
}

void carla_setParameterValue(const uint32_t index, const float value)
{
fUI.parameterChanged(index, value);
}

#if DISTRHO_PLUGIN_WANT_PROGRAMS
void carla_setMidiProgram(const uint32_t realProgram)
{
fUI.programChanged(realProgram);
}
#endif

#if DISTRHO_PLUGIN_WANT_STATE
void carla_setCustomData(const char* const key, const char* const value)
{
fUI.stateChanged(key, value);
}
#endif

void carla_setUiTitle(const char* const uiTitle)
{
fUI.setTitle(uiTitle);
}

// ---------------------------------------------

protected:
void handleEditParameter(const uint32_t, const bool)
{
// TODO
}

void handleSetParameterValue(const uint32_t rindex, const float value)
{
fHost->ui_parameter_changed(fHost->handle, rindex, value);
}

void handleSetState(const char* const key, const char* const value)
{
fHost->ui_custom_data_changed(fHost->handle, key, value);
}

void handleSendNote(const uint8_t, const uint8_t, const uint8_t)
{
// TODO
}

void handleUiResize(const unsigned int width, const unsigned int height)
{
fUI.setSize(width, height);
}

// ---------------------------------------------

private:
// Plugin stuff
const NativeHostDescriptor* const fHost;
PluginExporter* const fPlugin;

// UI
UIExporter fUI;

// ---------------------------------------------
// Callbacks

#define handlePtr ((UICarla*)ptr)

static void editParameterCallback(void* ptr, uint32_t index, bool started)
{
handlePtr->handleEditParameter(index, started);
}

static void setParameterCallback(void* ptr, uint32_t rindex, float value)
{
handlePtr->handleSetParameterValue(rindex, value);
}

#if DISTRHO_PLUGIN_WANT_STATE
static void setStateCallback(void* ptr, const char* key, const char* value)
{
handlePtr->handleSetState(key, value);
}
#endif

#if DISTRHO_PLUGIN_IS_SYNTH
static void sendNoteCallback(void* ptr, uint8_t channel, uint8_t note, uint8_t velocity)
{
handlePtr->handleSendNote(channel, note, velocity);
}
#endif

static void uiResizeCallback(void* ptr, unsigned int width, unsigned int height)
{
handlePtr->handleUiResize(width, height);
}

#undef handlePtr

CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(UICarla)
};
#endif // DISTRHO_PLUGIN_HAS_UI

// -----------------------------------------------------------------------
// Carla Plugin

class PluginCarla : public NativePluginClass
{
public:
PluginCarla(const NativeHostDescriptor* const host)
: NativePluginClass(host)
{
#if DISTRHO_PLUGIN_HAS_UI
fUiPtr = nullptr;
#endif
}

~PluginCarla() override
{
#if DISTRHO_PLUGIN_HAS_UI
if (fUiPtr != nullptr)
{
delete fUiPtr;
fUiPtr = nullptr;
}
#endif
}

protected:
// -------------------------------------------------------------------
// Plugin parameter calls

uint32_t getParameterCount() const override
{
return fPlugin.getParameterCount();
}

const NativeParameter* getParameterInfo(const uint32_t index) const override
{
CARLA_ASSERT(index < getParameterCount());

static NativeParameter param;

// reset
param.hints = ::PARAMETER_IS_ENABLED;
param.scalePointCount = 0;
param.scalePoints = nullptr;

{
int nativeParamHints = ::PARAMETER_IS_ENABLED;
const uint32_t paramHints = fPlugin.getParameterHints(index);

if (paramHints & PARAMETER_IS_AUTOMABLE)
nativeParamHints |= ::PARAMETER_IS_AUTOMABLE;
if (paramHints & PARAMETER_IS_BOOLEAN)
nativeParamHints |= ::PARAMETER_IS_BOOLEAN;
if (paramHints & PARAMETER_IS_INTEGER)
nativeParamHints |= ::PARAMETER_IS_INTEGER;
if (paramHints & PARAMETER_IS_LOGARITHMIC)
nativeParamHints |= ::PARAMETER_IS_LOGARITHMIC;
if (paramHints & PARAMETER_IS_OUTPUT)
nativeParamHints |= ::PARAMETER_IS_OUTPUT;

param.hints = static_cast<NativeParameterHints>(nativeParamHints);
}

param.name = fPlugin.getParameterName(index);
param.unit = fPlugin.getParameterUnit(index);

{
const ParameterRanges& ranges(fPlugin.getParameterRanges(index));

param.ranges.def = ranges.def;
param.ranges.min = ranges.min;
param.ranges.max = ranges.max;
//param.ranges.step = ranges.step;
//param.ranges.stepSmall = ranges.stepSmall;
//param.ranges.stepLarge = ranges.stepLarge;
}

return &param;
}

float getParameterValue(const uint32_t index) const override
{
CARLA_ASSERT(index < getParameterCount());

return fPlugin.getParameterValue(index);
}

// -------------------------------------------------------------------
// Plugin midi-program calls

#if DISTRHO_PLUGIN_WANT_PROGRAMS
uint32_t getMidiProgramCount() const override
{
return fPlugin.getProgramCount();
}

const NativeMidiProgram* getMidiProgramInfo(const uint32_t index) const override
{
CARLA_ASSERT(index < getMidiProgramCount());

if (index >= fPlugin.getProgramCount())
return nullptr;

static NativeMidiProgram midiProgram;

midiProgram.bank = index / 128;
midiProgram.program = index % 128;
midiProgram.name = fPlugin.getProgramName(index);

return &midiProgram;
}
#endif

// -------------------------------------------------------------------
// Plugin state calls

void setParameterValue(const uint32_t index, const float value) override
{
CARLA_ASSERT(index < getParameterCount());

fPlugin.setParameterValue(index, value);
}

#if DISTRHO_PLUGIN_WANT_PROGRAMS
void setMidiProgram(const uint8_t, const uint32_t bank, const uint32_t program) override
{
const uint32_t realProgram(bank * 128 + program);

if (realProgram >= fPlugin.getProgramCount())
return;

fPlugin.setProgram(realProgram);
}
#endif

#if DISTRHO_PLUGIN_WANT_STATE
void setCustomData(const char* const key, const char* const value) override
{
CARLA_ASSERT(key != nullptr);
CARLA_ASSERT(value != nullptr);

fPlugin.setState(key, value);
}
#endif

// -------------------------------------------------------------------
// Plugin process calls

void activate() override
{
fPlugin.activate();
}

void deactivate() override
{
fPlugin.deactivate();
}

#if DISTRHO_PLUGIN_IS_SYNTH
void process(float** const inBuffer, float** const outBuffer, const uint32_t frames, const NativeMidiEvent* const midiEvents, const uint32_t midiEventCount) override
{
uint32_t i;

for (i=0; i < midiEventCount && i < kMaxMidiEvents; ++i)
{
const NativeMidiEvent* const midiEvent(&midiEvents[i]);
MidiEvent* const realMidiEvent(&fRealMidiEvents[i]);

realMidiEvent->frame = midiEvent->time;
realMidiEvent->size = midiEvent->size;

for (uint8_t j=0; j < midiEvent->size; ++j)
realMidiEvent->buf[j] = midiEvent->data[j];
}

fPlugin.run(inBuffer, outBuffer, frames, fRealMidiEvents, i);
}
#else
void process(float** const inBuffer, float** const outBuffer, const uint32_t frames, const NativeMidiEvent* const, const uint32_t) override
{
fPlugin.run(inBuffer, outBuffer, frames);
}
#endif

// -------------------------------------------------------------------
// Plugin UI calls

#if DISTRHO_PLUGIN_HAS_UI
void uiShow(const bool show) override
{
if (show)
createUiIfNeeded();

if (fUiPtr != nullptr)
fUiPtr->carla_show(show);
}

void uiIdle() override
{
CARLA_ASSERT(fUiPtr != nullptr);

if (fUiPtr != nullptr)
fUiPtr->carla_idle();
}

void uiSetParameterValue(const uint32_t index, const float value) override
{
CARLA_ASSERT(fUiPtr != nullptr);
CARLA_ASSERT(index < getParameterCount());

if (fUiPtr != nullptr)
fUiPtr->carla_setParameterValue(index, value);
}

# if DISTRHO_PLUGIN_WANT_PROGRAMS
void uiSetMidiProgram(const uint8_t, const uint32_t bank, const uint32_t program) override
{
CARLA_ASSERT(fUiPtr != nullptr);

const uint32_t realProgram(bank * 128 + program);

if (realProgram >= fPlugin.getProgramCount())
return;

if (fUiPtr != nullptr)
fUiPtr->carla_setMidiProgram(realProgram);
}
# endif

# if DISTRHO_PLUGIN_WANT_STATE
void uiSetCustomData(const char* const key, const char* const value) override
{
CARLA_ASSERT(fUiPtr != nullptr);
CARLA_ASSERT(key != nullptr);
CARLA_ASSERT(value != nullptr);

if (fUiPtr != nullptr)
fUiPtr->carla_setCustomData(key, value);
}
# endif
#endif

// -------------------------------------------------------------------
// Plugin dispatcher calls

void bufferSizeChanged(const uint32_t bufferSize) override
{
fPlugin.setBufferSize(bufferSize, true);
}

void sampleRateChanged(const double sampleRate) override
{
fPlugin.setSampleRate(sampleRate, true);
}

#if DISTRHO_PLUGIN_HAS_UI
void uiNameChanged(const char* const uiName) override
{
if (fUiPtr != nullptr)
fUiPtr->carla_setUiTitle(uiName);
}
#endif

// -------------------------------------------------------------------

private:
PluginExporter fPlugin;

#if DISTRHO_PLUGIN_IS_SYNTH
MidiEvent fRealMidiEvents[kMaxMidiEvents];
#endif

#if DISTRHO_PLUGIN_HAS_UI
// UI
UICarla* fUiPtr;

void createUiIfNeeded()
{
if (fUiPtr == nullptr)
{
d_lastUiSampleRate = getSampleRate();
fUiPtr = new UICarla(getHostHandle(), &fPlugin);
}
}
#endif

CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(PluginCarla)

// -------------------------------------------------------------------

public:
static NativePluginHandle _instantiate(const NativeHostDescriptor* host)
{
d_lastBufferSize = host->get_buffer_size(host->handle);
d_lastSampleRate = host->get_sample_rate(host->handle);
return new PluginCarla(host);
}

static void _cleanup(NativePluginHandle handle)
{
delete (PluginCarla*)handle;
}
};

END_NAMESPACE_DISTRHO

// -----------------------------------------------------------------------

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