Carla/source/backend/utils/CachedPlugins.cpp

/*
 * Carla Plugin Host
 * Copyright (C) 2011-2018 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 doc/GPL.txt file.
 */

#include "CarlaUtils.h"

#include "CarlaNative.h"
#include "CarlaString.hpp"
#include "CarlaLv2Utils.hpp"

namespace CB = CarlaBackend;

static const char* const gNullCharPtr = "";

static bool isCachedPluginType(const CB::PluginType ptype)
{
    switch (ptype)
    {
    case CB::PLUGIN_INTERNAL:
    case CB::PLUGIN_LV2:
        return false;
    default:
        return true;
    }
}

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

_CarlaCachedPluginInfo::_CarlaCachedPluginInfo() noexcept
    : valid(false),
      category(CB::PLUGIN_CATEGORY_NONE),
      hints(0x0),
      audioIns(0),
      audioOuts(0),
      midiIns(0),
      midiOuts(0),
      parameterIns(0),
      parameterOuts(0),
      name(gNullCharPtr),
      label(gNullCharPtr),
      maker(gNullCharPtr),
      copyright(gNullCharPtr) {}

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

uint carla_get_cached_plugin_count(CB::PluginType ptype, const char* pluginPath)
{
    CARLA_SAFE_ASSERT_RETURN(isCachedPluginType(ptype), 0);
    carla_debug("carla_get_cached_plugin_count(%i:%s)", ptype, CB::PluginType2Str(ptype));

    switch (ptype)
    {
    case CB::PLUGIN_INTERNAL: {
        uint32_t count = 0;
        carla_get_native_plugins_data(&count);
        return count;
    }

    case CB::PLUGIN_LV2: {
        Lv2WorldClass& lv2World(Lv2WorldClass::getInstance());
        lv2World.initIfNeeded(pluginPath);
        return lv2World.getPluginCount();
    }

    default:
        return 0;
    }
}

const CarlaCachedPluginInfo* carla_get_cached_plugin_info(CB::PluginType ptype, uint index)
{
    carla_debug("carla_get_cached_plugin_info(%i:%s, %i)", ptype, CB::PluginType2Str(ptype), index);

    static CarlaCachedPluginInfo info;

    switch (ptype)
    {
    case CB::PLUGIN_INTERNAL: {
        uint32_t count = 0;
        const NativePluginDescriptor* const descs(carla_get_native_plugins_data(&count));
        CARLA_SAFE_ASSERT_BREAK(index < count);
        CARLA_SAFE_ASSERT_BREAK(descs != nullptr);

        const NativePluginDescriptor& desc(descs[index]);

        info.category = static_cast<CB::PluginCategory>(desc.category);
        info.hints    = 0x0;

        if (desc.hints & NATIVE_PLUGIN_IS_RTSAFE)
            info.hints |= CB::PLUGIN_IS_RTSAFE;
        if (desc.hints & NATIVE_PLUGIN_IS_SYNTH)
            info.hints |= CB::PLUGIN_IS_SYNTH;
        if (desc.hints & NATIVE_PLUGIN_HAS_UI)
            info.hints |= CB::PLUGIN_HAS_CUSTOM_UI;
        if (desc.hints & NATIVE_PLUGIN_NEEDS_FIXED_BUFFERS)
            info.hints |= CB::PLUGIN_NEEDS_FIXED_BUFFERS;
        if (desc.hints & NATIVE_PLUGIN_NEEDS_UI_MAIN_THREAD)
            info.hints |= CB::PLUGIN_NEEDS_UI_MAIN_THREAD;
        if (desc.hints & NATIVE_PLUGIN_USES_MULTI_PROGS)
            info.hints |= CB::PLUGIN_USES_MULTI_PROGS;

        info.valid         = true;
        info.audioIns      = desc.audioIns;
        info.audioOuts     = desc.audioOuts;
        info.midiIns       = desc.midiIns;
        info.midiOuts      = desc.midiOuts;
        info.parameterIns  = desc.paramIns;
        info.parameterOuts = desc.paramOuts;
        info.name          = desc.name;
        info.label         = desc.label;
        info.maker         = desc.maker;
        info.copyright     = desc.copyright;
        return &info;
    }

    case CB::PLUGIN_LV2: {
        Lv2WorldClass& lv2World(Lv2WorldClass::getInstance());

        const LilvPlugin* const cPlugin(lv2World.getPluginFromIndex(index));
        CARLA_SAFE_ASSERT_BREAK(cPlugin != nullptr);

        Lilv::Plugin lilvPlugin(cPlugin);
        CARLA_SAFE_ASSERT_BREAK(lilvPlugin.get_uri().is_uri());

        // features
        info.hints = 0x0;

        if (lilvPlugin.get_uis().size() > 0)
            info.hints |= CB::PLUGIN_HAS_CUSTOM_UI;

        {
            Lilv::Nodes lilvFeatureNodes(lilvPlugin.get_supported_features());

            LILV_FOREACH(nodes, it, lilvFeatureNodes)
            {
                Lilv::Node lilvFeatureNode(lilvFeatureNodes.get(it));
                const char* const featureURI(lilvFeatureNode.as_uri());
                CARLA_SAFE_ASSERT_CONTINUE(featureURI != nullptr);

                if (std::strcmp(featureURI, LV2_CORE__hardRTCapable) == 0)
                    info.hints |= CB::PLUGIN_IS_RTSAFE;
            }

            lilv_nodes_free(const_cast<LilvNodes*>(lilvFeatureNodes.me));
        }

        // category
        info.category = CB::PLUGIN_CATEGORY_NONE;

        {
            Lilv::Nodes typeNodes(lilvPlugin.get_value(lv2World.rdf_type));

            if (typeNodes.size() > 0)
            {
                if (typeNodes.contains(lv2World.class_allpass))
                    info.category = CB::PLUGIN_CATEGORY_FILTER;
                if (typeNodes.contains(lv2World.class_amplifier))
                    info.category = CB::PLUGIN_CATEGORY_DYNAMICS;
                if (typeNodes.contains(lv2World.class_analyzer))
                    info.category = CB::PLUGIN_CATEGORY_UTILITY;
                if (typeNodes.contains(lv2World.class_bandpass))
                    info.category = CB::PLUGIN_CATEGORY_FILTER;
                if (typeNodes.contains(lv2World.class_chorus))
                    info.category = CB::PLUGIN_CATEGORY_MODULATOR;
                if (typeNodes.contains(lv2World.class_comb))
                    info.category = CB::PLUGIN_CATEGORY_FILTER;
                if (typeNodes.contains(lv2World.class_compressor))
                    info.category = CB::PLUGIN_CATEGORY_DYNAMICS;
                if (typeNodes.contains(lv2World.class_constant))
                    info.category = CB::PLUGIN_CATEGORY_OTHER;
                if (typeNodes.contains(lv2World.class_converter))
                    info.category = CB::PLUGIN_CATEGORY_UTILITY;
                if (typeNodes.contains(lv2World.class_delay))
                    info.category = CB::PLUGIN_CATEGORY_DELAY;
                if (typeNodes.contains(lv2World.class_distortion))
                    info.category = CB::PLUGIN_CATEGORY_DISTORTION;
                if (typeNodes.contains(lv2World.class_dynamics))
                    info.category = CB::PLUGIN_CATEGORY_DYNAMICS;
                if (typeNodes.contains(lv2World.class_eq))
                    info.category = CB::PLUGIN_CATEGORY_EQ;
                if (typeNodes.contains(lv2World.class_envelope))
                    info.category = CB::PLUGIN_CATEGORY_DYNAMICS;
                if (typeNodes.contains(lv2World.class_expander))
                    info.category = CB::PLUGIN_CATEGORY_DYNAMICS;
                if (typeNodes.contains(lv2World.class_filter))
                    info.category = CB::PLUGIN_CATEGORY_FILTER;
                if (typeNodes.contains(lv2World.class_flanger))
                    info.category = CB::PLUGIN_CATEGORY_MODULATOR;
                if (typeNodes.contains(lv2World.class_function))
                    info.category = CB::PLUGIN_CATEGORY_UTILITY;
                if (typeNodes.contains(lv2World.class_gate))
                    info.category = CB::PLUGIN_CATEGORY_DYNAMICS;
                if (typeNodes.contains(lv2World.class_generator))
                    info.category = CB::PLUGIN_CATEGORY_OTHER;
                if (typeNodes.contains(lv2World.class_highpass))
                    info.category = CB::PLUGIN_CATEGORY_FILTER;
                if (typeNodes.contains(lv2World.class_limiter))
                    info.category = CB::PLUGIN_CATEGORY_DYNAMICS;
                if (typeNodes.contains(lv2World.class_lowpass))
                    info.category = CB::PLUGIN_CATEGORY_FILTER;
                if (typeNodes.contains(lv2World.class_mixer))
                    info.category = CB::PLUGIN_CATEGORY_UTILITY;
                if (typeNodes.contains(lv2World.class_modulator))
                    info.category = CB::PLUGIN_CATEGORY_MODULATOR;
                if (typeNodes.contains(lv2World.class_multiEQ))
                    info.category = CB::PLUGIN_CATEGORY_EQ;
                if (typeNodes.contains(lv2World.class_oscillator))
                    info.category = CB::PLUGIN_CATEGORY_OTHER;
                if (typeNodes.contains(lv2World.class_paraEQ))
                    info.category = CB::PLUGIN_CATEGORY_EQ;
                if (typeNodes.contains(lv2World.class_phaser))
                    info.category = CB::PLUGIN_CATEGORY_MODULATOR;
                if (typeNodes.contains(lv2World.class_pitch))
                    info.category = CB::PLUGIN_CATEGORY_OTHER;
                if (typeNodes.contains(lv2World.class_reverb))
                    info.category = CB::PLUGIN_CATEGORY_DELAY;
                if (typeNodes.contains(lv2World.class_simulator))
                    info.category = CB::PLUGIN_CATEGORY_OTHER;
                if (typeNodes.contains(lv2World.class_spatial))
                    info.category = CB::PLUGIN_CATEGORY_OTHER;
                if (typeNodes.contains(lv2World.class_spectral))
                    info.category = CB::PLUGIN_CATEGORY_OTHER;
                if (typeNodes.contains(lv2World.class_utility))
                    info.category = CB::PLUGIN_CATEGORY_UTILITY;
                if (typeNodes.contains(lv2World.class_waveshaper))
                    info.category = CB::PLUGIN_CATEGORY_DISTORTION;
                if (typeNodes.contains(lv2World.class_instrument))
                {
                    info.category = CB::PLUGIN_CATEGORY_SYNTH;
                    info.hints |= CB::PLUGIN_IS_SYNTH;
                }
            }

            lilv_nodes_free(const_cast<LilvNodes*>(typeNodes.me));
        }

        // number data
        info.audioIns      = 0;
        info.audioOuts     = 0;
        info.midiIns       = 0;
        info.midiOuts      = 0;
        info.parameterIns  = 0;
        info.parameterOuts = 0;

        for (uint i=0, count=lilvPlugin.get_num_ports(); i<count; ++i)
        {
            Lilv::Port lilvPort(lilvPlugin.get_port_by_index(i));

            bool isInput;

            /**/ if (lilvPort.is_a(lv2World.port_input))
                isInput = true;
            else if (lilvPort.is_a(lv2World.port_output))
                isInput = false;
            else
                continue;

            /**/ if (lilvPort.is_a(lv2World.port_control))
            {
                // skip some control ports
                if (lilvPort.has_property(lv2World.reportsLatency))
                    continue;

                if (LilvNode* const designationNode = lilv_port_get(lilvPort.parent, lilvPort.me, lv2World.designation.me))
                {
                    bool skip = false;

                    if (const char* const designation = lilv_node_as_string(designationNode))
                    {
                        /**/ if (std::strcmp(designation, LV2_CORE__control) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_CORE__freeWheeling) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_CORE__latency) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_PARAMETERS__sampleRate) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_TIME__bar) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_TIME__barBeat) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_TIME__beat) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_TIME__beatUnit) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_TIME__beatsPerBar) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_TIME__beatsPerMinute) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_TIME__frame) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_TIME__framesPerSecond) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_TIME__speed) == 0)
                            skip = true;
                        else if (std::strcmp(designation, LV2_KXSTUDIO_PROPERTIES__TimePositionTicksPerBeat) == 0)
                            skip = true;
                    }

                    lilv_node_free(designationNode);

                    if (skip)
                        continue;
                }

                if (isInput)
                    ++(info.parameterIns);
                else
                    ++(info.parameterOuts);
            }
            else if (lilvPort.is_a(lv2World.port_audio))
            {
                if (isInput)
                    ++(info.audioIns);
                else
                    ++(info.audioOuts);
            }
            else if (lilvPort.is_a(lv2World.port_cv))
            {
            }
            else if (lilvPort.is_a(lv2World.port_atom))
            {
                Lilv::Nodes supportNodes(lilvPort.get_value(lv2World.atom_supports));

                for (LilvIter *it = lilv_nodes_begin(supportNodes.me); ! lilv_nodes_is_end(supportNodes.me, it); it = lilv_nodes_next(supportNodes.me, it))
                {
                    const Lilv::Node node(lilv_nodes_get(supportNodes.me, it));
                    CARLA_SAFE_ASSERT_CONTINUE(node.is_uri());

                    if (node.equals(lv2World.midi_event))
                    {
                        if (isInput)
                            ++(info.midiIns);
                        else
                            ++(info.midiOuts);
                    }
                }

                lilv_nodes_free(const_cast<LilvNodes*>(supportNodes.me));
            }
            else if (lilvPort.is_a(lv2World.port_event))
            {
                if (lilvPort.supports_event(lv2World.midi_event))
                {
                    if (isInput)
                        ++(info.midiIns);
                    else
                        ++(info.midiOuts);
                }
            }
            else if (lilvPort.is_a(lv2World.port_midi))
            {
                if (isInput)
                    ++(info.midiIns);
                else
                    ++(info.midiOuts);
            }
        }

        // text data
        static CarlaString suri, sname, smaker, slicense;
        suri.clear(); sname.clear(); smaker.clear(); slicense.clear();

        suri = lilvPlugin.get_uri().as_uri();

        if (LilvNode* const nameNode = lilv_plugin_get_name(lilvPlugin.me))
        {
            if (const char* const name = lilv_node_as_string(nameNode))
                sname = name;
            lilv_node_free(nameNode);
        }

        if (const char* const author = lilvPlugin.get_author_name().as_string())
            smaker = author;

        Lilv::Nodes licenseNodes(lilvPlugin.get_value(lv2World.doap_license));

        if (licenseNodes.size() > 0)
        {
            if (const char* const license = licenseNodes.get_first().as_string())
                slicense = license;
        }

        lilv_nodes_free(const_cast<LilvNodes*>(licenseNodes.me));

        info.valid     = true;
        info.name      = sname;
        info.label     = suri;
        info.maker     = smaker;
        info.copyright = slicense;

        return &info;
    }

    default:
        break;
    }

    info.valid         = true;
    info.category      = CB::PLUGIN_CATEGORY_NONE;
    info.hints         = 0x0;
    info.audioIns      = 0;
    info.audioOuts     = 0;
    info.midiIns       = 0;
    info.midiOuts      = 0;
    info.parameterIns  = 0;
    info.parameterOuts = 0;
    info.name          = gNullCharPtr;
    info.label         = gNullCharPtr;
    info.maker         = gNullCharPtr;
    info.copyright     = gNullCharPtr;
    return &info;
}

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

#include "../native-plugins/_data.all.cpp"

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