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Rework to allow multi-context audio, custom driver, custom context

Signed-off-by: falkTX <falktx@falktx.com>
tags/22.02
falkTX 3 years ago
parent
commit
e0e50db2bc
Signed by: falkTX <falktx@falktx.com> GPG Key ID: CDBAA37ABC74FBA0
3 changed files with 240 additions and 135 deletions
  1. +62
    -130
      src/CardinalPlugin.cpp
  2. +4
    -5
      src/CardinalUI.cpp
  3. +174
    -0
      src/PluginContext.hpp

+ 62
- 130
src/CardinalPlugin.cpp View File

@@ -16,14 +16,11 @@
*/
#include <asset.hpp>
#include <audio.hpp>
#include <context.hpp>
#include <library.hpp>
#include <midi.hpp>
#include <patch.hpp>
#include <plugin.hpp>
#include <random.hpp>
// #include <rtaudio.hpp>
#include <settings.hpp>
#include <system.hpp>
@@ -34,11 +31,7 @@
#include <osdialog.h>
#ifdef NDEBUG
# undef DEBUG
#endif
#include "DistrhoPlugin.hpp"
#include "PluginContext.hpp"
namespace rack {
namespace plugin {
@@ -50,15 +43,6 @@ void destroyStaticPlugins();
START_NAMESPACE_DISTRHO
// -----------------------------------------------------------------------------------------------------------
// The following code was based from VCVRack adapters/standalone.cpp
/*
Copyright (C) 2016-2021 VCV
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 3 of the
License, or (at your option) any later version.
*/
struct Initializer {
Initializer()
@@ -98,7 +82,9 @@ struct Initializer {
INFO("Initializing environment");
audio::init(); // does nothing
midi::init(); // does nothing
// rtaudioInit();
rack::audio::addDriver(0, new CardinalAudioDriver);
plugin::initStaticPlugins();
ui::init();
}
@@ -127,111 +113,17 @@ static const Initializer& getInitializerInstance()
// -----------------------------------------------------------------------------------------------------------
struct CardinalAudioDevice : rack::audio::Device {
Plugin* const fPlugin;
CardinalAudioDevice(Plugin* const plugin)
: fPlugin(plugin) {}
std::string getName() override
{
return "Plugin Device";
}
int getNumInputs() override
{
return DISTRHO_PLUGIN_NUM_INPUTS;
}
int getNumOutputs() override
{
return DISTRHO_PLUGIN_NUM_OUTPUTS;
}
std::set<float> getSampleRates() override
{
return { getSampleRate() };
}
float getSampleRate() override
{
return fPlugin->getSampleRate();
}
void setSampleRate(float) override {}
std::set<int> getBlockSizes() override
{
return { getBlockSize() };
}
int getBlockSize() override
{
return fPlugin->getBufferSize();
}
void setBlockSize(int) override {}
};
// -----------------------------------------------------------------------------------------------------------
struct CardinalAudioDriver : rack::audio::Driver {
Plugin* const fPlugin;
CardinalAudioDevice fDevice;
CardinalAudioDriver(Plugin* const plugin)
: fPlugin(plugin),
fDevice(plugin) {}
std::string getName() override
{
return "Plugin Driver";
}
std::vector<int> getDeviceIds() override
{
return { 0 };
}
std::string getDeviceName(int) override
{
return "Plugin Driver Device";
}
int getDeviceNumInputs(int) override
{
return DISTRHO_PLUGIN_NUM_INPUTS;
}
int getDeviceNumOutputs(int) override
{
return DISTRHO_PLUGIN_NUM_OUTPUTS;
}
rack::audio::Device* subscribe(int, rack::audio::Port* const port) override
{
fDevice.subscribe(port);
fDevice.onStartStream();
return &fDevice;
}
void unsubscribe(int, rack::audio::Port* const port) override
{
fDevice.onStopStream();
fDevice.unsubscribe(port);
}
};
// -----------------------------------------------------------------------------------------------------------
class CardinalPlugin : public Plugin
class CardinalPlugin : public CardinalBasePlugin
{
rack::Context* const fContext;
CardinalAudioDriver* const fAudioDriver;
CardinalPluginContext* const fContext;
float* fAudioBufferIn;
float* fAudioBufferOut;
std::string fAutosavePath;
// for base/context handling
bool fIsActive;
rack::audio::Device* fCurrentDevice;
struct ScopedContext {
ScopedContext(CardinalPlugin* const plugin)
{
@@ -246,11 +138,12 @@ class CardinalPlugin : public Plugin
public:
CardinalPlugin()
: Plugin(0, 0, 0),
fContext(new rack::Context),
fAudioDriver(new CardinalAudioDriver(this)),
: CardinalBasePlugin(0, 0, 0),
fContext(new CardinalPluginContext(this)),
fAudioBufferIn(nullptr),
fAudioBufferOut(nullptr)
fAudioBufferOut(nullptr),
fIsActive(false),
fCurrentDevice(nullptr)
{
// create unique temporary path for this instance
try {
@@ -273,8 +166,6 @@ public:
const ScopedContext sc(this);
rack::audio::addDriver(0, fAudioDriver);
fContext->engine = new rack::engine::Engine;
fContext->history = new rack::history::State;
fContext->patch = new rack::patch::Manager;
@@ -288,19 +179,47 @@ public:
{
const ScopedContext sc(this);
delete fContext;
// rack::audio::destroy();
}
if (! fAutosavePath.empty())
rack::system::removeRecursively(fAutosavePath);
}
rack::Context* getRackContext() const noexcept
CardinalPluginContext* getRackContext() const noexcept
{
return fContext;
}
protected:
/* --------------------------------------------------------------------------------------------------------
* Cardinal Base things */
bool isActive() const noexcept override
{
return fIsActive;
}
bool canAssignDevice() const noexcept override
{
return fCurrentDevice == nullptr;
}
void assignDevice(rack::audio::Device* const dev) noexcept override
{
DISTRHO_SAFE_ASSERT_RETURN(fCurrentDevice == nullptr,);
fCurrentDevice = dev;
}
bool clearDevice(rack::audio::Device* const dev) noexcept override
{
if (fCurrentDevice != dev)
return false;
fCurrentDevice = dev;
return true;
}
/* --------------------------------------------------------------------------------------------------------
* Information */
@@ -378,11 +297,15 @@ protected:
fAudioBufferIn = new float[bufferSize];
fAudioBufferOut = new float[bufferSize];
std::memset(fAudioBufferIn, 0, sizeof(float)*bufferSize);
if (fCurrentDevice != nullptr)
fCurrentDevice->onStartStream();
}
void deactivate() override
{
fAudioDriver->fDevice.onStopStream();
if (fCurrentDevice != nullptr)
fCurrentDevice->onStopStream();
delete[] fAudioBufferIn;
delete[] fAudioBufferOut;
@@ -399,6 +322,15 @@ protected:
fContext->engine->stepBlock(frames);
*/
if (fCurrentDevice == nullptr)
{
if (outputs[0] != inputs[0])
std::memcpy(outputs[0], inputs[0], sizeof(float)*frames);
if (outputs[1] != inputs[1])
std::memcpy(outputs[1], inputs[1], sizeof(float)*frames);
return;
}
for (uint32_t i=0, j=0; i<frames; ++i)
{
fAudioBufferIn[j++] = inputs[0][i];
@@ -407,8 +339,8 @@ protected:
std::memset(fAudioBufferOut, 0, sizeof(float)*frames*DISTRHO_PLUGIN_NUM_OUTPUTS);
fAudioDriver->fDevice.processBuffer(fAudioBufferIn, DISTRHO_PLUGIN_NUM_INPUTS,
fAudioBufferOut, DISTRHO_PLUGIN_NUM_OUTPUTS, frames);
fCurrentDevice->processBuffer(fAudioBufferIn, DISTRHO_PLUGIN_NUM_INPUTS,
fAudioBufferOut, DISTRHO_PLUGIN_NUM_OUTPUTS, frames);
for (uint32_t i=0, j=0; i<frames; ++i)
{
@@ -433,7 +365,7 @@ private:
DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CardinalPlugin)
};
rack::Context* getRackContextFromPlugin(void* const ptr)
CardinalPluginContext* getRackContextFromPlugin(void* const ptr)
{
return static_cast<CardinalPlugin*>(ptr)->getRackContext();
}


+ 4
- 5
src/CardinalUI.cpp View File

@@ -21,9 +21,8 @@
#include <ui/common.hpp>
#include <window/Window.hpp>

#ifdef NDEBUG
# undef DEBUG
#endif
#include "PluginContext.hpp"

#include "DistrhoUI.hpp"
#include "ResizeHandle.hpp"

@@ -42,11 +41,11 @@ START_NAMESPACE_DISTRHO

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

rack::Context* getRackContextFromPlugin(void* ptr);
CardinalPluginContext* getRackContextFromPlugin(void* ptr);

class CardinalUI : public UI
{
rack::Context* const fContext;
CardinalPluginContext* const fContext;
rack::math::Vec fLastMousePos;
ResizeHandle fResizeHandle;



+ 174
- 0
src/PluginContext.hpp View File

@@ -0,0 +1,174 @@
/*
* DISTRHO Cardinal Plugin
* Copyright (C) 2021 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 3 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 LICENSE file.
*/

#pragma once

#include <audio.hpp>
#include <context.hpp>

#ifdef NDEBUG
# undef DEBUG
#endif

#include "DistrhoPlugin.hpp"

START_NAMESPACE_DISTRHO

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

class CardinalBasePlugin : public Plugin {
public:
CardinalBasePlugin(uint32_t parameterCount, uint32_t programCount, uint32_t stateCount)
: Plugin(parameterCount, programCount, stateCount) {}
~CardinalBasePlugin() override {}
virtual bool isActive() const noexcept = 0;
virtual bool canAssignDevice() const noexcept = 0;
virtual void assignDevice(rack::audio::Device* dev) noexcept = 0;
virtual bool clearDevice(rack::audio::Device* dev) noexcept = 0;
};

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

struct CardinalPluginContext : rack::Context {
CardinalBasePlugin* const plugin;

CardinalPluginContext(CardinalBasePlugin* const p)
: plugin(p) {}
};

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

struct CardinalAudioDevice : rack::audio::Device {
CardinalBasePlugin* const fPlugin;

CardinalAudioDevice(CardinalBasePlugin* const plugin)
: fPlugin(plugin) {}

std::string getName() override
{
return "Plugin Device";
}

int getNumInputs() override
{
return DISTRHO_PLUGIN_NUM_INPUTS;
}

int getNumOutputs() override
{
return DISTRHO_PLUGIN_NUM_OUTPUTS;
}

int getBlockSize() override
{
return fPlugin->getBufferSize();
}

float getSampleRate() override
{
return fPlugin->getSampleRate();
}

std::set<int> getBlockSizes() override
{
return std::set<int>({ getBlockSize() });
}

std::set<float> getSampleRates() override
{
return std::set<float>({ getSampleRate() });
}

void setBlockSize(int) override {}
void setSampleRate(float) override {}
};

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

struct CardinalAudioDriver : rack::audio::Driver {

CardinalAudioDriver() {}

std::string getName() override
{
return "Plugin Driver";
}

std::vector<int> getDeviceIds() override
{
return std::vector<int>({ 0 });
}

std::string getDeviceName(int) override
{
return "Plugin Driver Device";
}

int getDeviceNumInputs(int) override
{
return DISTRHO_PLUGIN_NUM_INPUTS;
}

int getDeviceNumOutputs(int) override
{
return DISTRHO_PLUGIN_NUM_OUTPUTS;
}

rack::audio::Device* subscribe(int, rack::audio::Port* const port) override
{
CardinalPluginContext* const pluginContext = reinterpret_cast<CardinalPluginContext*>(port->context);
DISTRHO_SAFE_ASSERT_RETURN(pluginContext != nullptr, nullptr);

CardinalBasePlugin* const plugin = pluginContext->plugin;
DISTRHO_SAFE_ASSERT_RETURN(plugin != nullptr, nullptr);

if (! plugin->canAssignDevice())
throw rack::Exception("Plugin driver only allows one audio device to be used simultaneously");

CardinalAudioDevice* const device = new CardinalAudioDevice(plugin);
device->subscribe(port);

if (plugin->isActive())
device->onStartStream();

plugin->assignDevice(device);
return device;
}

void unsubscribe(int, rack::audio::Port* const port) override
{
CardinalAudioDevice* const device = reinterpret_cast<CardinalAudioDevice*>(port->device);
DISTRHO_SAFE_ASSERT_RETURN(device != nullptr,);

CardinalPluginContext* const pluginContext = reinterpret_cast<CardinalPluginContext*>(port->context);
DISTRHO_SAFE_ASSERT_RETURN(pluginContext != nullptr,);

CardinalBasePlugin* const plugin = pluginContext->plugin;
DISTRHO_SAFE_ASSERT_RETURN(plugin != nullptr,);

if (plugin->clearDevice(device))
{
device->onStopStream();
device->unsubscribe(port);
delete device;
}
}
};

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

END_NAMESPACE_DISTRHO

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