Rework to allow multi-context audio, custom driver, custom context
Signed-off-by: falkTX <falktx@falktx.com>
This commit is contained in:
falkTX
parent
963c669d55
commit
e0e50db2bc
3 changed files with 240 additions and 135 deletions
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@ -16,14 +16,11 @@
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*/
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#include <asset.hpp>
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#include <audio.hpp>
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#include <context.hpp>
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#include <library.hpp>
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#include <midi.hpp>
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#include <patch.hpp>
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#include <plugin.hpp>
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#include <random.hpp>
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// #include <rtaudio.hpp>
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#include <settings.hpp>
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#include <system.hpp>
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@ -34,11 +31,7 @@
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#include <osdialog.h>
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#ifdef NDEBUG
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# undef DEBUG
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#endif
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#include "DistrhoPlugin.hpp"
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#include "PluginContext.hpp"
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namespace rack {
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namespace plugin {
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@ -50,15 +43,6 @@ void destroyStaticPlugins();
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START_NAMESPACE_DISTRHO
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// -----------------------------------------------------------------------------------------------------------
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// The following code was based from VCVRack adapters/standalone.cpp
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/*
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Copyright (C) 2016-2021 VCV
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This program is free software: you can redistribute it and/or modify it under the terms of the
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GNU General Public License as published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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*/
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struct Initializer {
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Initializer()
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@ -98,7 +82,9 @@ struct Initializer {
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INFO("Initializing environment");
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audio::init(); // does nothing
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midi::init(); // does nothing
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// rtaudioInit();
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rack::audio::addDriver(0, new CardinalAudioDriver);
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plugin::initStaticPlugins();
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ui::init();
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}
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@ -127,111 +113,17 @@ static const Initializer& getInitializerInstance()
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// -----------------------------------------------------------------------------------------------------------
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struct CardinalAudioDevice : rack::audio::Device {
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Plugin* const fPlugin;
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CardinalAudioDevice(Plugin* const plugin)
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: fPlugin(plugin) {}
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std::string getName() override
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{
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return "Plugin Device";
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}
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int getNumInputs() override
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{
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return DISTRHO_PLUGIN_NUM_INPUTS;
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}
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int getNumOutputs() override
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{
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return DISTRHO_PLUGIN_NUM_OUTPUTS;
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}
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std::set<float> getSampleRates() override
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{
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return { getSampleRate() };
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}
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float getSampleRate() override
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{
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return fPlugin->getSampleRate();
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}
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void setSampleRate(float) override {}
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std::set<int> getBlockSizes() override
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{
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return { getBlockSize() };
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}
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int getBlockSize() override
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{
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return fPlugin->getBufferSize();
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}
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void setBlockSize(int) override {}
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};
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// -----------------------------------------------------------------------------------------------------------
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struct CardinalAudioDriver : rack::audio::Driver {
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Plugin* const fPlugin;
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CardinalAudioDevice fDevice;
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CardinalAudioDriver(Plugin* const plugin)
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: fPlugin(plugin),
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fDevice(plugin) {}
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std::string getName() override
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{
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return "Plugin Driver";
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}
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std::vector<int> getDeviceIds() override
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{
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return { 0 };
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}
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std::string getDeviceName(int) override
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{
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return "Plugin Driver Device";
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}
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int getDeviceNumInputs(int) override
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{
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return DISTRHO_PLUGIN_NUM_INPUTS;
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}
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int getDeviceNumOutputs(int) override
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{
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return DISTRHO_PLUGIN_NUM_OUTPUTS;
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}
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rack::audio::Device* subscribe(int, rack::audio::Port* const port) override
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{
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fDevice.subscribe(port);
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fDevice.onStartStream();
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return &fDevice;
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}
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void unsubscribe(int, rack::audio::Port* const port) override
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{
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fDevice.onStopStream();
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fDevice.unsubscribe(port);
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}
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};
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// -----------------------------------------------------------------------------------------------------------
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class CardinalPlugin : public Plugin
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class CardinalPlugin : public CardinalBasePlugin
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{
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rack::Context* const fContext;
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CardinalAudioDriver* const fAudioDriver;
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CardinalPluginContext* const fContext;
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float* fAudioBufferIn;
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float* fAudioBufferOut;
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std::string fAutosavePath;
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// for base/context handling
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bool fIsActive;
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rack::audio::Device* fCurrentDevice;
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struct ScopedContext {
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ScopedContext(CardinalPlugin* const plugin)
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{
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@ -246,11 +138,12 @@ class CardinalPlugin : public Plugin
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public:
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CardinalPlugin()
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: Plugin(0, 0, 0),
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fContext(new rack::Context),
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fAudioDriver(new CardinalAudioDriver(this)),
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: CardinalBasePlugin(0, 0, 0),
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fContext(new CardinalPluginContext(this)),
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fAudioBufferIn(nullptr),
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fAudioBufferOut(nullptr)
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fAudioBufferOut(nullptr),
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fIsActive(false),
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fCurrentDevice(nullptr)
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{
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// create unique temporary path for this instance
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try {
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@ -273,8 +166,6 @@ public:
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const ScopedContext sc(this);
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rack::audio::addDriver(0, fAudioDriver);
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fContext->engine = new rack::engine::Engine;
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fContext->history = new rack::history::State;
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fContext->patch = new rack::patch::Manager;
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@ -288,19 +179,47 @@ public:
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{
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const ScopedContext sc(this);
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delete fContext;
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// rack::audio::destroy();
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}
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if (! fAutosavePath.empty())
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rack::system::removeRecursively(fAutosavePath);
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}
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rack::Context* getRackContext() const noexcept
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CardinalPluginContext* getRackContext() const noexcept
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{
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return fContext;
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}
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protected:
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/* --------------------------------------------------------------------------------------------------------
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* Cardinal Base things */
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bool isActive() const noexcept override
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{
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return fIsActive;
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}
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bool canAssignDevice() const noexcept override
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{
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return fCurrentDevice == nullptr;
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}
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void assignDevice(rack::audio::Device* const dev) noexcept override
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{
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DISTRHO_SAFE_ASSERT_RETURN(fCurrentDevice == nullptr,);
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fCurrentDevice = dev;
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}
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bool clearDevice(rack::audio::Device* const dev) noexcept override
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{
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if (fCurrentDevice != dev)
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return false;
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fCurrentDevice = dev;
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return true;
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}
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/* --------------------------------------------------------------------------------------------------------
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* Information */
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@ -378,11 +297,15 @@ protected:
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fAudioBufferIn = new float[bufferSize];
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fAudioBufferOut = new float[bufferSize];
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std::memset(fAudioBufferIn, 0, sizeof(float)*bufferSize);
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if (fCurrentDevice != nullptr)
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fCurrentDevice->onStartStream();
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}
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void deactivate() override
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{
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fAudioDriver->fDevice.onStopStream();
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if (fCurrentDevice != nullptr)
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fCurrentDevice->onStopStream();
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delete[] fAudioBufferIn;
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delete[] fAudioBufferOut;
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@ -399,6 +322,15 @@ protected:
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fContext->engine->stepBlock(frames);
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*/
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if (fCurrentDevice == nullptr)
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{
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if (outputs[0] != inputs[0])
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std::memcpy(outputs[0], inputs[0], sizeof(float)*frames);
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if (outputs[1] != inputs[1])
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std::memcpy(outputs[1], inputs[1], sizeof(float)*frames);
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return;
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}
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for (uint32_t i=0, j=0; i<frames; ++i)
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{
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fAudioBufferIn[j++] = inputs[0][i];
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@ -407,8 +339,8 @@ protected:
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std::memset(fAudioBufferOut, 0, sizeof(float)*frames*DISTRHO_PLUGIN_NUM_OUTPUTS);
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fAudioDriver->fDevice.processBuffer(fAudioBufferIn, DISTRHO_PLUGIN_NUM_INPUTS,
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fAudioBufferOut, DISTRHO_PLUGIN_NUM_OUTPUTS, frames);
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fCurrentDevice->processBuffer(fAudioBufferIn, DISTRHO_PLUGIN_NUM_INPUTS,
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fAudioBufferOut, DISTRHO_PLUGIN_NUM_OUTPUTS, frames);
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for (uint32_t i=0, j=0; i<frames; ++i)
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{
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@ -433,7 +365,7 @@ private:
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DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CardinalPlugin)
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};
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rack::Context* getRackContextFromPlugin(void* const ptr)
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CardinalPluginContext* getRackContextFromPlugin(void* const ptr)
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{
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return static_cast<CardinalPlugin*>(ptr)->getRackContext();
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}
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@ -21,9 +21,8 @@
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#include <ui/common.hpp>
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#include <window/Window.hpp>
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#ifdef NDEBUG
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# undef DEBUG
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#endif
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#include "PluginContext.hpp"
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#include "DistrhoUI.hpp"
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#include "ResizeHandle.hpp"
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@ -42,11 +41,11 @@ START_NAMESPACE_DISTRHO
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// -----------------------------------------------------------------------------------------------------------
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rack::Context* getRackContextFromPlugin(void* ptr);
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CardinalPluginContext* getRackContextFromPlugin(void* ptr);
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class CardinalUI : public UI
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{
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rack::Context* const fContext;
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CardinalPluginContext* const fContext;
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rack::math::Vec fLastMousePos;
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ResizeHandle fResizeHandle;
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174
src/PluginContext.hpp
Normal file
174
src/PluginContext.hpp
Normal file
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@ -0,0 +1,174 @@
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/*
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* DISTRHO Cardinal Plugin
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* Copyright (C) 2021 Filipe Coelho <falktx@falktx.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 3 of
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* the License, or any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* For a full copy of the GNU General Public License see the LICENSE file.
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*/
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#pragma once
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#include <audio.hpp>
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#include <context.hpp>
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#ifdef NDEBUG
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# undef DEBUG
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#endif
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#include "DistrhoPlugin.hpp"
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START_NAMESPACE_DISTRHO
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// -----------------------------------------------------------------------------------------------------------
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class CardinalBasePlugin : public Plugin {
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public:
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CardinalBasePlugin(uint32_t parameterCount, uint32_t programCount, uint32_t stateCount)
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: Plugin(parameterCount, programCount, stateCount) {}
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~CardinalBasePlugin() override {}
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virtual bool isActive() const noexcept = 0;
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virtual bool canAssignDevice() const noexcept = 0;
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virtual void assignDevice(rack::audio::Device* dev) noexcept = 0;
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virtual bool clearDevice(rack::audio::Device* dev) noexcept = 0;
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};
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// -----------------------------------------------------------------------------------------------------------
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struct CardinalPluginContext : rack::Context {
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CardinalBasePlugin* const plugin;
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CardinalPluginContext(CardinalBasePlugin* const p)
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: plugin(p) {}
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};
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// -----------------------------------------------------------------------------------------------------------
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struct CardinalAudioDevice : rack::audio::Device {
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CardinalBasePlugin* const fPlugin;
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CardinalAudioDevice(CardinalBasePlugin* const plugin)
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: fPlugin(plugin) {}
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std::string getName() override
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{
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return "Plugin Device";
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}
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int getNumInputs() override
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{
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return DISTRHO_PLUGIN_NUM_INPUTS;
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}
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int getNumOutputs() override
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{
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return DISTRHO_PLUGIN_NUM_OUTPUTS;
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}
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int getBlockSize() override
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{
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return fPlugin->getBufferSize();
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}
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float getSampleRate() override
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{
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return fPlugin->getSampleRate();
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}
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std::set<int> getBlockSizes() override
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{
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return std::set<int>({ getBlockSize() });
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}
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std::set<float> getSampleRates() override
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{
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return std::set<float>({ getSampleRate() });
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}
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void setBlockSize(int) override {}
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void setSampleRate(float) override {}
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};
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// -----------------------------------------------------------------------------------------------------------
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struct CardinalAudioDriver : rack::audio::Driver {
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CardinalAudioDriver() {}
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std::string getName() override
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{
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return "Plugin Driver";
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}
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std::vector<int> getDeviceIds() override
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{
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return std::vector<int>({ 0 });
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}
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std::string getDeviceName(int) override
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{
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return "Plugin Driver Device";
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}
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int getDeviceNumInputs(int) override
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{
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return DISTRHO_PLUGIN_NUM_INPUTS;
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}
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int getDeviceNumOutputs(int) override
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{
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return DISTRHO_PLUGIN_NUM_OUTPUTS;
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}
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rack::audio::Device* subscribe(int, rack::audio::Port* const port) override
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{
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CardinalPluginContext* const pluginContext = reinterpret_cast<CardinalPluginContext*>(port->context);
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DISTRHO_SAFE_ASSERT_RETURN(pluginContext != nullptr, nullptr);
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CardinalBasePlugin* const plugin = pluginContext->plugin;
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DISTRHO_SAFE_ASSERT_RETURN(plugin != nullptr, nullptr);
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if (! plugin->canAssignDevice())
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throw rack::Exception("Plugin driver only allows one audio device to be used simultaneously");
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CardinalAudioDevice* const device = new CardinalAudioDevice(plugin);
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device->subscribe(port);
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if (plugin->isActive())
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device->onStartStream();
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plugin->assignDevice(device);
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return device;
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}
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void unsubscribe(int, rack::audio::Port* const port) override
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{
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CardinalAudioDevice* const device = reinterpret_cast<CardinalAudioDevice*>(port->device);
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DISTRHO_SAFE_ASSERT_RETURN(device != nullptr,);
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CardinalPluginContext* const pluginContext = reinterpret_cast<CardinalPluginContext*>(port->context);
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DISTRHO_SAFE_ASSERT_RETURN(pluginContext != nullptr,);
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CardinalBasePlugin* const plugin = pluginContext->plugin;
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DISTRHO_SAFE_ASSERT_RETURN(plugin != nullptr,);
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if (plugin->clearDevice(device))
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{
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device->onStopStream();
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device->unsubscribe(port);
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delete device;
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}
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}
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};
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// -----------------------------------------------------------------------------------------------------------
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END_NAMESPACE_DISTRHO
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