Cadence/c++/carla-native/distrho/DistrhoPluginCarla.cpp

/*
 * DISTHRO Plugin Toolkit (DPT)
 * Copyright (C) 2012 Filipe Coelho <falktx@gmail.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 license see the GPL.txt file
 */

#include "carla_native.hpp"

#include "DistrhoPluginMain.cpp"
#include "DistrhoUIMain.cpp"

#ifdef QTCREATOR_TEST
# define DISTRHO_PLUGIN_HAS_UI 1
//# define DISTRHO_PLUGIN_IS_SYNTH 1
# define DISTRHO_PLUGIN_WANT_PROGRAMS 1
//# define DISTRHO_PLUGIN_WANT_STATE    1
#endif

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

 START_NAMESPACE_DISTRHO

#if DISTRHO_PLUGIN_HAS_UI
class UICarla
{
public:
    UICarla(const HostDescriptor* const host, PluginInternal* plugin, intptr_t winId)
        : m_host(host),
          m_plugin(plugin),
          ui(this, winId, setParameterCallback, setStateCallback, uiEditParameterCallback, uiSendNoteCallback, uiResizeCallback)
    {
    }

    ~UICarla()
    {
    }

protected:
    void setParameterValue(uint32_t index, float value)
    {
        m_host->ui_parameter_changed(m_host->handle, index, value);
    }

#if DISTRHO_PLUGIN_WANT_STATE
    void setState(const char* key, const char* value)
    {
        m_host->ui_custom_data_changed(m_host->handle, key, value);
    }
#endif

    void uiEditParameter(uint32_t, bool)
    {
        // TODO
    }

#if DISTRHO_PLUGIN_IS_SYNTH
    void uiSendNote(bool, uint8_t, uint8_t, uint8_t)
    {
        // TODO
    }
#endif

    void uiResize(unsigned int width, unsigned int height)
    {
        //hostCallback(audioMasterSizeWindow, width, height, nullptr, 0.0f);
        Q_UNUSED(width);
        Q_UNUSED(height);
    }

private:
    // Carla stuff
    const HostDescriptor* const m_host;
    PluginInternal* const m_plugin;

    // Plugin UI
    UIInternal ui;

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

    static void setParameterCallback(void* ptr, uint32_t rindex, float value)
    {
        UICarla* _this_ = (UICarla*)ptr;
        CARLA_ASSERT(_this_);

        _this_->setParameterValue(rindex, value);
    }

    static void setStateCallback(void* ptr, const char* key, const char* value)
    {
#if DISTRHO_PLUGIN_WANT_STATE
        UICarla* _this_ = (UICarla*)ptr;
        CARLA_ASSERT(_this_);

        _this_->setState(key, value);
#else
        Q_UNUSED(ptr);
        Q_UNUSED(key);
        Q_UNUSED(value);
#endif
    }

    static void uiEditParameterCallback(void* ptr, uint32_t index, bool started)
    {
        UICarla* _this_ = (UICarla*)ptr;
        CARLA_ASSERT(_this_);

        _this_->uiEditParameter(index, started);
    }

    static void uiSendNoteCallback(void* ptr, bool onOff, uint8_t channel, uint8_t note, uint8_t velocity)
    {
#if DISTRHO_PLUGIN_IS_SYNTH
        UICarla* _this_ = (UICarla*)ptr;
        CARLA_ASSERT(_this_);

        _this_->uiSendNote(onOff, channel, note, velocity);
#else
        Q_UNUSED(ptr);
        Q_UNUSED(onOff);
        Q_UNUSED(channel);
        Q_UNUSED(note);
        Q_UNUSED(velocity);
#endif
    }

    static void uiResizeCallback(void* ptr, unsigned int width, unsigned int height)
    {
        UICarla* _this_ = (UICarla*)ptr;
        CARLA_ASSERT(_this_);

        _this_->uiResize(width, height);
    }

    friend class PluginCarla;
};
#endif

class PluginCarla : public PluginDescriptorClass
{
public:
    PluginCarla(const HostDescriptor* host)
        : PluginDescriptorClass(host),
          m_host(host)
    {
        uiPtr = nullptr;
    }

    ~PluginCarla()
    {
        if (uiPtr)
            delete uiPtr;
    }

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

    uint32_t getParameterCount()
    {
        return plugin.parameterCount();
    }

    const ::Parameter* getParameterInfo(uint32_t index)
    {
        static ::Parameter param;

        {
            uint32_t paramHints = plugin.parameterHints(index);

            if (paramHints & PARAMETER_IS_AUTOMABLE)
                param.hints |= ::PARAMETER_IS_AUTOMABLE;
            if (paramHints & PARAMETER_IS_BOOLEAN)
                param.hints |= ::PARAMETER_IS_BOOLEAN;
            if (paramHints & PARAMETER_IS_INTEGER)
                param.hints |= ::PARAMETER_IS_INTEGER;
            if (paramHints & PARAMETER_IS_LOGARITHMIC)
                param.hints |= ::PARAMETER_IS_LOGARITHMIC;
            if (paramHints & PARAMETER_IS_OUTPUT)
                param.hints |= ::PARAMETER_IS_OUTPUT;
        }

        param.name  = plugin.parameterName(index);
        param.unit  = plugin.parameterUnit(index);

        {
            const ParameterRanges* ranges(plugin.parameterRanges(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;
        }

        param.scalePointCount = 0;
        param.scalePoints = nullptr;

        return &param;
    }

    float getParameterValue(uint32_t index)
    {
        return plugin.parameterValue(index);
    }

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

#if DISTRHO_PLUGIN_WANT_PROGRAMS
    virtual uint32_t getMidiProgramCount()
    {
        return plugin.programCount();
    }

    virtual const ::MidiProgram* getMidiProgramInfo(uint32_t index)
    {
        static ::MidiProgram midiProgram;
        midiProgram.bank    = index / 128;
        midiProgram.program = index % 128;
        midiProgram.name    = plugin.programName(index);
        return &midiProgram;
    }
#endif

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

    void setParameterValue(uint32_t index, float value)
    {
        plugin.setParameterValue(index, value);
    }

#if DISTRHO_PLUGIN_WANT_PROGRAMS
    void setMidiProgram(uint32_t bank, uint32_t program)
    {
        uint32_t realProgram = bank * 128 + program;
        plugin.setProgram(realProgram);
    }
#endif

#if DISTRHO_PLUGIN_WANT_STATE
    void setCustomData(const char* key, const char* value)
    {
        plugin.setState(key, value);
    }
#endif

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

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

        //if (uiPtr)
        //    uiPtr->setVisible(show);
    }

    void uiIdle()
    {
        if (uiPtr)
            uiPtr->ui.idle();
    }

    void uiSetParameterValue(uint32_t index, float value)
    {
        if (uiPtr)
            uiPtr->ui.parameterChanged(index, value);
    }

# if DISTRHO_PLUGIN_WANT_PROGRAMS
    void uiSetMidiProgram(uint32_t bank, uint32_t program)
    {
        uint32_t realProgram = bank * 128 + program;

        if (uiPtr)
            uiPtr->ui.programChanged(realProgram);
    }
# endif

# if DISTRHO_PLUGIN_WANT_STATE
    void uiSetCustomData(const char* key, const char* value)
    {
        if (uiPtr)
            uiPtr->ui.stateChanged(key, value);
    }
# endif
#endif

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

    void activate()
    {
        plugin.activate();
    }

    void deactivate()
    {
        plugin.deactivate();
    }

    void process(float**, float**, uint32_t, uint32_t, ::MidiEvent*)
    {
        //plugin->d_run();
    }

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

private:
    PluginInternal plugin;
    const HostDescriptor* const m_host;

#if DISTRHO_PLUGIN_HAS_UI
    // UI
    UICarla* uiPtr;
#endif

    void createUiIfNeeded()
    {
        if (! uiPtr)
        {
            setLastUiSampleRate(getSampleRate());
            uiPtr = new UICarla(m_host, &plugin, 0);
        }
    }

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

public:
    static PluginHandle _instantiate(struct _PluginDescriptor*, HostDescriptor* host)
    {
        d_lastBufferSize = host->get_buffer_size(host->handle);
        d_lastSampleRate = host->get_sample_rate(host->handle);
        return new PluginCarla(host);
    }

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

END_NAMESPACE_DISTRHO

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