Files
op-pedal/src/Lv2Effect.cpp
T
Robin E. R. Davies 25494d6f3c Side-chains
2025-09-30 19:59:47 -04:00

1656 lines
54 KiB
C++

// Copyright (c) 2022 Robin Davies
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#include "pch.h"
#include "restrict.hpp"
#include "Lv2Effect.hpp"
#include "PiPedalException.hpp"
#include <lv2/lv2plug.in/ns/ext/worker/worker.h>
#include <lilv/lilv.h>
#include "lv2/atom/atom.h"
#include "lv2/atom/util.h"
// #include "lv2.h"
#include "lv2/log/log.h"
#include "lv2/log/logger.h"
#include "lv2/midi/midi.h"
#include "lv2/urid/urid.h"
#include "lv2/log/logger.h"
#include "lv2/uri-map/uri-map.h"
#include "lv2/atom/forge.h"
#include "lv2/state/state.h"
#include "lv2/worker/worker.h"
#include "lv2/patch/patch.h"
#include "lv2/parameters/parameters.h"
#include "lv2/units/units.h"
#include "lv2/atom/util.h"
#include "AudioHost.hpp"
#include <exception>
#include "RingBufferReader.hpp"
#include "Worker.hpp"
using namespace pipedal;
namespace fs = std::filesystem;
const float BYPASS_TIME_S = 0.1f;
static fs::path makeAbsolutePath(const std::filesystem::path &path, const std::filesystem::path &parentPath)
{
if (path.is_absolute())
{
return path;
}
return parentPath / path;
}
inline void Lv2Effect::CheckStagingBufferSentries()
{
#ifndef NDEBUG
for (size_t i = 0; i < inputStagingBuffers.size(); ++i)
{
if (inputStagingBuffers[i].at(stagingBufferSize) != 99.9f)
{
throw std::logic_error("Staging buffer sentry overwritten.");
}
}
for (size_t i = 0; i < outputStagingBuffers.size(); ++i)
{
if (outputStagingBuffers[i].at(stagingBufferSize) != 99.9f)
{
throw std::logic_error("Staging buffer sentry overwritten.");
}
}
#endif
}
Lv2Effect::Lv2Effect(
IHost *pHost_,
const std::shared_ptr<Lv2PluginInfo> &info_,
PedalboardItem &pedalboardItem)
: pHost(pHost_), pInstance(nullptr), info(info_), urids(pHost), instanceId(pedalboardItem.instanceId())
{
auto pWorld = pHost_->getWorld();
size_t stagedBufferSize = GetStagedBufferSize();
logFeature.Prepare(&pHost_->GetMapFeature(), info_->name() + ": ", this);
optionsFeature.Prepare(pHost->GetMapFeature(), 44100, stagedBufferSize, pHost->GetAtomBufferSize());
this->bypassStartingSamples = (uint32_t)(pHost->GetSampleRate() * BYPASS_TIME_S);
this->bypass = pedalboardItem.isEnabled();
this->workerThread = std::make_unique<HostWorkerThread>();
if (info_->WantsWorkerThread())
{
workerThread->StartThread();
}
// stash a list of known file properties that we want to keep synced.
if (info->piPedalUI())
{
for (auto fileProperty : info->piPedalUI()->fileProperties())
{
LV2_URID filePropertyUrid = pHost->GetLv2Urid(fileProperty->patchProperty().c_str());
this->pathProperties.push_back(filePropertyUrid);
this->pathPropertyWriters.push_back(PatchPropertyWriter(instanceId, filePropertyUrid));
}
}
for (auto &pathProperty : pedalboardItem.pathProperties_)
{
SetPathPatchProperty(pathProperty.first, pathProperty.second);
}
// initialize the atom forge used on the realtime thread.
LV2_URID_Map *map = this->pHost->GetLv2UridMap();
lv2_atom_forge_init(&inputForgeRt, map);
lv2_atom_forge_init(&outputForgeRt, map);
lv2_atom_forge_init(&stagedInputForgeRt, map);
const LilvPlugins *plugins = lilv_world_get_all_plugins(pWorld);
// FIXME: could we not stash the pPlugin in the plugin info?
auto uriNode = lilv_new_uri(pWorld, pedalboardItem.uri().c_str());
const LilvPlugin *pPlugin = lilv_plugins_get_by_uri(plugins, uriNode);
for (auto &port : info->ports())
{
if (port->is_bypass())
{
this->bypassControlIndex = port->index();
break;
}
}
lilv_node_free(uriNode);
{
AutoLilvNode bundleUri = lilv_plugin_get_bundle_uri(pPlugin);
char *bundleUriString = lilv_file_uri_parse(bundleUri.AsUri().c_str(), nullptr);
std::string storagePath = pHost_->GetPluginStoragePath();
fileBrowserFilesFeature.Initialize(
pHost_->GetMapFeature().GetMap(),
logFeature.GetLog(),
bundleUriString,
storagePath);
mapPathFeature.Prepare(&(pHost_->GetMapFeature()));
mapPathFeature.SetPluginStoragePath(pHost_->GetPluginStoragePath());
if (info->piPedalUI())
{
const auto &fileProperties = info_->piPedalUI()->fileProperties();
for (const auto &fileProperty : fileProperties)
{
fs::path targetPath = fileProperty->directory() / std::filesystem::path(bundleUriString).parent_path().filename();
mapPathFeature.AddResourceFileMapping({bundleUriString,
storagePath / targetPath,
fileProperty->fileTypes()});
}
}
lilv_free(bundleUriString);
}
LV2_Feature *const *features = pHost_->GetLv2Features();
for (auto p = features; *p != nullptr; ++p)
{
if (strcmp((*p)->URI, LV2_LOG__log) != 0)
{ // ommit the host's LOG feature.
this->features.push_back(*p);
}
}
this->features.push_back(logFeature.GetFeature());
this->features.push_back(optionsFeature.GetFeature());
this->features.push_back(mapPathFeature.GetMapPathFeature());
this->features.push_back(mapPathFeature.GetMakePathFeature());
this->features.push_back(mapPathFeature.GetFreePathFeature());
this->features.push_back(this->fileBrowserFilesFeature.GetFeature());
this->work_schedule_feature = nullptr;
if (true) // info_->hasExtension(LV2_WORKER__interface))
{
LV2_Worker_Schedule *schedule = (LV2_Worker_Schedule *)malloc(sizeof(LV2_Worker_Schedule));
schedule->handle = this;
schedule->schedule_work = worker_schedule_fn;
work_schedule_feature = (LV2_Feature *)malloc(sizeof(LV2_Feature));
work_schedule_feature->URI = LV2_WORKER__schedule;
work_schedule_feature->data = schedule;
this->features.push_back(work_schedule_feature);
}
this->features.push_back(nullptr);
const LV2_Feature **myFeatures = &this->features.at(0);
LilvInstance *pInstance = nullptr;
try
{
pInstance = lilv_plugin_instantiate(pPlugin, pHost->GetSampleRate(), myFeatures);
}
catch (const std::exception &e)
{
this->pInstance = nullptr;
throw PiPedalException(SS("Plugin threw an exception: " << e.what() << " '" << info_->name() << "'"));
}
this->pInstance = pInstance;
if (this->pInstance == nullptr)
{
throw PiPedalException(SS("Failed to create plugin \'" << info_->name() << "\'."));
}
const LV2_Worker_Interface *worker_interface =
(const LV2_Worker_Interface *)lilv_instance_get_extension_data(pInstance,
LV2_WORKER__interface);
this->worker = std::make_unique<Worker>(workerThread, pInstance, worker_interface);
const LV2_State_Interface *state_interface =
(const LV2_State_Interface *)lilv_instance_get_extension_data(pInstance,
LV2_STATE__interface);
if (state_interface)
{
this->stateInterface = std::make_unique<StateInterface>(pHost, &(this->features.at(0)), pInstance, state_interface);
}
this->instanceId = pedalboardItem.instanceId();
PreparePortIndices();
// Copy default pedalboard settings.
size_t maxPortIndex = 0;
std::vector<std::shared_ptr<Lv2PortInfo>> &t = info->ports();
for (std::shared_ptr<Lv2PortInfo> &port : info->ports())
{
if (port->is_control_port())
{
auto index = port->index();
if (index + 1 > maxPortIndex)
{
maxPortIndex = index + 1;
}
}
}
if (maxPortIndex > info->ports().size())
{
throw std::runtime_error("Ports are not consecutive");
}
this->controlValues.resize(info->ports().size());
for (auto i = pedalboardItem.controlValues().begin(); i != pedalboardItem.controlValues().end(); ++i)
{
auto &v = (*i);
int index = GetControlIndex(v.key());
if (index != -1)
{
this->controlValues.at(index) = v.value();
}
}
ConnectControlPorts();
if (!pedalboardItem.lilvPresetUri().empty())
{
AutoLilvNode presetNode = lilv_new_uri(pWorld, pedalboardItem.lilvPresetUri().c_str());
lilv_world_load_resource(pWorld, presetNode);
LilvState *pState = lilv_state_new_from_world(pWorld, pHost->GetMapFeature().GetMap(), presetNode);
if (pState)
{
if (this->stateInterface)
{
this->stateInterface->RestoreState(pState);
}
lilv_state_free(pState);
}
// now that we've loaded the preset, clear the uri, and save new state
// Why? because lilv doesn't provide facilities for reading state.
pedalboardItem.lv2State(this->stateInterface->Save());
RestoreState(pedalboardItem); // reload it with OUR map/unmap handling.
pedalboardItem.lilvPresetUri("");
}
else
{
if (!RestoreState(pedalboardItem))
{
if (info->hasDefaultState())
{
// restore the default state.
try
{
// REsTORE from LV2_STATE__state default state.
AutoLilvNode pluginNode = lilv_new_uri(pWorld, info->uri().c_str());
LilvState *pState = lilv_state_new_from_world(pWorld, pHost->GetMapFeature().GetMap(), pluginNode);
if (pState)
{
if (this->stateInterface)
{
this->stateInterface->RestoreState(pState);
}
lilv_state_free(pState);
}
pedalboardItem.lv2State(this->stateInterface->Save());
RestoreState(pedalboardItem); // do it with OUR map/unmap file handling.
}
catch (const std::exception &e)
{
Lv2Log::warning(SS("Failed to restore default state for " << info->name() << ": " << e.what()));
}
}
}
}
}
bool Lv2Effect::RestoreState(PedalboardItem &pedalboardItem)
{
// Restore state if present.
if (this->stateInterface)
{
try
{
if (pedalboardItem.lv2State().isValid_)
{
this->stateInterface->Restore(pedalboardItem.lv2State());
return true;
}
return false;
}
catch (const std::exception &e)
{
std::string name = pedalboardItem.pluginName();
Lv2Log::warning(SS(name << ": " << e.what()));
return false;
}
}
return true;
}
void Lv2Effect::ConnectControlPorts()
{
// shared_ptr is not thread-safe.
// Get naked pointers to use on the realtime thread.
int controlArrayLength = 0;
for (int i = 0; i < info->ports().size(); ++i)
{
if (info->ports().at(i)->index() >= controlArrayLength)
{
controlArrayLength = info->ports().at(i)->index() + 1;
}
}
this->realtimePortInfo.resize(controlArrayLength);
for (int i = 0; i < info->ports().size(); ++i)
{
const auto &port = info->ports().at(i);
if (port->is_control_port())
{
int index = port->index();
realtimePortInfo.at(index) = port.get();
lilv_instance_connect_port(pInstance, i, &this->controlValues.at(index));
}
}
}
void Lv2Effect::PreparePortIndices()
{
size_t nPorts = info->ports().size();
isInputControlPort.resize(nPorts);
this->defaultInputControlValues.resize(nPorts);
this->isInputTriggerControlPort.resize(nPorts);
for (int i = 0; i < info->ports().size(); ++i)
{
const auto &port = info->ports().at(i);
int portIndex = port->index();
if (port->is_audio_port())
{
if (port->is_input())
{
if (port->is_sidechain())
{
this->inputSidechainPortIndices.push_back(portIndex);
} else {
this->inputAudioPortIndices.push_back(portIndex);
}
}
else
{
this->outputAudioPortIndices.push_back(portIndex);
}
}
else if (port->is_atom_port())
{
if (port->is_input())
{
if (port->supports_midi())
{
this->inputMidiPortIndices.push_back(portIndex);
}
this->inputAtomPortIndices.push_back(portIndex);
}
else
{
this->outputAtomPortIndices.push_back(portIndex);
if (port->supports_midi())
{
this->outputMidiPortIndices.push_back(portIndex);
}
}
}
else if (port->is_control_port())
{
controlIndex[port->symbol()] = portIndex;
if (port->is_input())
{
this->isInputControlPort.at(portIndex) = true;
this->defaultInputControlValues.at(portIndex) = port->default_value();
if (port->trigger_property())
{
this->isInputTriggerControlPort.at(portIndex) = true;
}
}
}
}
size_t maxInputControlPort = isInputControlPort.size();
while (maxInputControlPort != 0 && !isInputControlPort.at(maxInputControlPort - 1))
{
--maxInputControlPort;
}
this->maxInputControlPort = maxInputControlPort;
inputAudioBuffers.resize(inputAudioPortIndices.size());
inputSidechainBuffers.resize(inputSidechainPortIndices.size());
outputAudioBuffers.resize(outputAudioPortIndices.size());
inputAtomBuffers.resize(inputAtomPortIndices.size());
outputAtomBuffers.resize(outputAtomPortIndices.size());
if (RequiresBufferStaging())
{
EnableBufferStaging(
GetStagedBufferSize());
}
}
void Lv2Effect::PrepareNoInputEffect(int numberOfInputs, size_t maxBufferSize)
{
if (outputAudioPortIndices.size() == 0)
{
// pass the input through unmodified.
inputAudioBuffers.resize(std::max((size_t)numberOfInputs, inputAudioPortIndices.size()));
outputAudioBuffers.resize(numberOfOutputs);
}
else if (inputAudioPortIndices.size() == 0)
{
inputAudioBuffers.resize(numberOfInputs);
outputAudioBuffers.resize(std::max((size_t)numberOfInputs, outputAudioPortIndices.size()));
// allocate a working buffer which we will mix with passed-through data.
outputMixBuffers.resize(outputAudioPortIndices.size());
for (size_t i = 0; i < outputMixBuffers.size(); ++i)
{
outputMixBuffers.at(i).resize(maxBufferSize);
}
// connect the plugin to the mix buffer instead of output buffer.
for (size_t i = 0; i < outputAudioPortIndices.size(); ++i)
{
int pluginIndex = this->outputAudioPortIndices.at(i);
lilv_instance_connect_port(this->pInstance, pluginIndex, outputMixBuffers.at(i).data());
}
}
}
void Lv2Effect::SetAudioInputBuffer(int index, float *buffer)
{
this->inputAudioBuffers.at(index) = buffer;
if (borrowedEffect)
{
// Already running on the realtime thread,
// so don't update the audio ports until the effect gets placed on the realtime thread.
return;
}
if (inputAudioPortIndices.size() == inputAudioBuffers.size())
{
if (stagingBufferSize != 0)
{
int pluginIndex = this->inputAudioPortIndices.at(index);
if (index >= inputStagingBufferPointers.size())
{
throw std::runtime_error("Invalid input staging buffer index.");
}
lilv_instance_connect_port(this->pInstance, pluginIndex, inputStagingBufferPointers.at(index));
}
else
{
int pluginIndex = this->inputAudioPortIndices.at(index);
lilv_instance_connect_port(this->pInstance, pluginIndex, buffer);
}
}
else
{
throw std::runtime_error("Invalid input buffer index.");
// // cases: 1->0, 1->1, 2->0, 2->1
// if (index < inputAudioPortIndices.size())
// {
// int pluginIndex = this->inputAudioPortIndices.at(index);
// lilv_instance_connect_port(this->pInstance, pluginIndex, buffer);
// }
}
}
void Lv2Effect::SetAudioSidechainBuffer(int index, float *buffer)
{
this->inputSidechainBuffers.at(index) = buffer;
if (borrowedEffect)
{
// Already running on the realtime thread,
// so don't update the audio ports until the effect gets placed on the realtime thread.
return;
}
if (stagingBufferSize != 0)
{
int pluginIndex = this->inputSidechainPortIndices.at(index);
if (index >= sidechainStagingBufferPointers.size())
{
throw std::runtime_error("Invalid input staging buffer index.");
}
lilv_instance_connect_port(this->pInstance, pluginIndex, sidechainStagingBufferPointers.at(index));
}
else
{
int pluginIndex = this->inputSidechainPortIndices.at(index);
lilv_instance_connect_port(this->pInstance, pluginIndex, buffer);
}
}
void Lv2Effect::SetAudioInputBuffer(float *left)
{
if (GetNumberOfInputAudioBuffers() > 1)
{
SetAudioInputBuffer(0, left);
SetAudioInputBuffer(1, left);
}
else if (GetNumberOfInputAudioBuffers() != 0)
{
SetAudioInputBuffer(0, left);
}
}
void Lv2Effect::SetAudioInputBuffers(float *left, float *right)
{
if (GetNumberOfInputAudioBuffers() == 1)
{
SetAudioInputBuffer(0, left);
}
else if (GetNumberOfInputAudioBuffers() > 1)
{
SetAudioInputBuffer(0, left);
SetAudioInputBuffer(1, right);
}
}
void Lv2Effect::SetAudioOutputBuffer(int index, float *buffer)
{
this->outputAudioBuffers.at(index) = buffer;
if (borrowedEffect)
{
// Effect is already running on the realtime thread,
// so don't update the audio ports until the updated pedalboard gets placed on the realtime thread.
return;
}
if (this->inputAudioPortIndices.size() != 0) // i.e. we're not mixing a zero-input control
{
if (this->stagingBufferSize != 0)
{
if ((size_t)index < this->outputStagingBufferPointers.size())
{
int pluginIndex = this->outputAudioPortIndices.at(index);
lilv_instance_connect_port(pInstance, pluginIndex, outputStagingBufferPointers.at(index));
}
else
{
throw std::runtime_error("outputStagingBufferPointers index out of range.");
}
}
else
{
if ((size_t)index < this->outputAudioPortIndices.size())
{
int pluginIndex = this->outputAudioPortIndices.at(index);
lilv_instance_connect_port(pInstance, pluginIndex, buffer);
}
}
}
}
int Lv2Effect::GetControlIndex(const std::string &key) const
{
auto i = controlIndex.find(key);
if (i == controlIndex.end())
{
return -1;
}
return i->second;
}
Lv2Effect::~Lv2Effect()
{
if (deleted)
{
try {
throw std::runtime_error("Deleted twice!");
} catch (const std::exception&e)
{
std::terminate();
}
}
deleted = true;
if (worker)
{
worker->Close();
worker = nullptr; // delete the worker first!
}
if (activated)
{
Deactivate();
activated = false;
}
if (pInstance)
{
lilv_instance_free(pInstance);
pInstance = nullptr;
}
if (work_schedule_feature)
{
free(work_schedule_feature->data);
work_schedule_feature->data = nullptr;
free(work_schedule_feature);
work_schedule_feature = nullptr;
}
}
void Lv2Effect::Activate()
{
if (this->activated)
{
return;
}
this->activated = true;
this->AssignUnconnectedPorts();
lilv_instance_activate(pInstance);
if (this->bypassControlIndex == -1)
{
this->BypassDezipperSet(this->bypass ? 1.0f : 0.0f);
}
else
{
this->BypassDezipperSet(1.0f);
this->controlValues.at(this->bypassControlIndex) = this->bypass ? 1.0f : 0.0f;
}
}
void Lv2Effect::UpdateAudioPorts()
{
// called on realtime thread to switch borrowed effects to the new buffer pointers.
if (borrowedEffect)
{
if (stagingBufferSize != 0)
{
for (size_t i = 0; i < this->inputAudioPortIndices.size(); ++i)
{
int portIndex = this->inputAudioPortIndices.at(i);
if (inputStagingBufferPointers.at(i) != nullptr)
{
lilv_instance_connect_port(pInstance, portIndex, inputStagingBufferPointers.at(i));
}
}
for (size_t i = 0; i < this->outputAudioPortIndices.size(); ++i)
{
int portIndex = this->outputAudioPortIndices.at(i);
if (outputStagingBufferPointers.at(i) != nullptr)
{
lilv_instance_connect_port(pInstance, portIndex, outputStagingBufferPointers.at(i));
}
}
for (size_t i = 0; i < this->inputSidechainPortIndices.size(); ++i)
{
int portIndex = this->inputSidechainPortIndices.at(i);
if (sidechainStagingBufferPointers.at(i) != nullptr)
{
lilv_instance_connect_port(pInstance, portIndex, sidechainStagingBufferPointers.at(i));
}
}
for (size_t i = 0; i < this->inputAtomPortIndices.size(); ++i)
{
if (i == 0)
{
if (stagedInputAtomBufferPointer == nullptr)
{
throw std::runtime_error("Invalid astagedInputAtomBufferPointer");
}
lilv_instance_connect_port(pInstance, inputAtomPortIndices[i],stagedInputAtomBufferPointer);
} else {
auto atomInputBuffer = this->GetAtomInputBuffer(i);
lilv_instance_connect_port(pInstance, inputAtomPortIndices[i],atomInputBuffer);
}
}
for (size_t i = 0; i < this->outputAtomPortIndices.size(); ++i)
{
if (i == 0)
{
if (stagedOutputAtomBufferPointer == nullptr)
{
throw std::runtime_error("Invalid astagedOutputAtomBufferPointer");
}
lilv_instance_connect_port(pInstance, outputAtomPortIndices[i],stagedOutputAtomBufferPointer);
} else {
auto atomOutputBuffer = this->GetAtomOutputBuffer(i);
lilv_instance_connect_port(pInstance, outputAtomPortIndices[i],atomOutputBuffer);
}
}
} else {
for (size_t i = 0; i < this->inputAudioPortIndices.size(); ++i)
{
int portIndex = this->inputAudioPortIndices.at(i);
if (GetAudioInputBuffer(i) != nullptr)
{
lilv_instance_connect_port(pInstance, portIndex, GetAudioInputBuffer(i));
}
}
for (size_t i = 0; i < this->outputAudioPortIndices.size(); ++i)
{
int portIndex = this->outputAudioPortIndices.at(i);
if (GetAudioOutputBuffer(i) != nullptr)
{
lilv_instance_connect_port(pInstance, portIndex, GetAudioOutputBuffer(i));
}
}
for (size_t i = 0; i < this->inputSidechainPortIndices.size(); ++i)
{
int portIndex = this->inputSidechainPortIndices.at(i);
if (GetAudioSidechainBuffer(i) != nullptr)
{
lilv_instance_connect_port(pInstance, portIndex, GetAudioSidechainBuffer(i));
}
}
for (size_t i = 0; i < this->inputAtomPortIndices.size(); ++i)
{
auto atomInputBuffer = this->GetAtomInputBuffer(i);
lilv_instance_connect_port(pInstance, inputAtomPortIndices[i],atomInputBuffer);
}
for (size_t i = 0; i < this->outputAtomPortIndices.size(); ++i)
{
auto atomOutputBuffer = this->GetAtomOutputBuffer(i);
lilv_instance_connect_port(pInstance, outputAtomPortIndices[i],atomOutputBuffer);
}
// for (size_t i = 0; i < this->inputMidiPortIndices.size(); ++i)
// {
// auto midiInputBuffer = this->GetMidiInputBuffer(i);
// lilv_instance_connect_port(pInstance, inputMidiPortIndices[i],midiInputBuffer);
// }
// for (size_t i = 0; i < this->outputMidiPortIndices.size(); ++i)
// {
// auto midiOutputBuffer = this->GetMidiOutputBuffer(i);
// lilv_instance_connect_port(pInstance, outputMidiPortIndices[i],midiOutputBuffer);
// }
}
}
}
void Lv2Effect::AssignUnconnectedPorts()
{
for (size_t i = 0; i < this->inputAudioPortIndices.size(); ++i)
{
if (GetAudioInputBuffer(i) == nullptr)
{
int pluginIndex = this->inputAudioPortIndices.at(i);
float *buffer = bufferPool.AllocateBuffer<float>(pHost->GetMaxAudioBufferSize());
lilv_instance_connect_port(pInstance, pluginIndex, buffer);
}
}
if (this->inputAudioPortIndices.size() != 0) // i.e. not using a mix buffer.
{
for (size_t i = 0; i < this->outputAudioPortIndices.size(); ++i)
{
if (GetAudioOutputBuffer(i) == nullptr)
{
float *buffer = bufferPool.AllocateBuffer<float>(pHost->GetMaxAudioBufferSize());
int pluginIndex = this->outputAudioPortIndices.at(i);
lilv_instance_connect_port(pInstance, pluginIndex, buffer);
}
}
}
for (int i = 0; i < this->GetNumberOfInputAtomPorts(); ++i)
{
if (GetAtomInputBuffer(i) == nullptr)
{
int pluginIndex = this->inputAtomPortIndices.at(i);
uint8_t *buffer = bufferPool.AllocateBuffer<uint8_t>(pHost->GetAtomBufferSize());
if (stagedInputAtomBufferPointer && i == 0)
{
lilv_instance_connect_port(pInstance, pluginIndex, stagedInputAtomBufferPointer);
ResetInputAtomBuffer((char *)(stagedInputAtomBufferPointer));
}
else
{
lilv_instance_connect_port(pInstance, pluginIndex, buffer);
}
ResetInputAtomBuffer((char *)buffer);
this->inputAtomBuffers.at(i) = (char *)buffer;
}
}
for (int i = 0; i < this->GetNumberOfOutputAtomPorts(); ++i)
{
if (GetAtomOutputBuffer(i) == nullptr)
{
int pluginIndex = this->outputAtomPortIndices.at(i);
uint8_t *buffer = bufferPool.AllocateBuffer<uint8_t>(pHost->GetAtomBufferSize());
ResetOutputAtomBuffer((char *)buffer);
if (stagedOutputAtomBufferPointer && i == 0)
{
lilv_instance_connect_port(pInstance, pluginIndex, stagedOutputAtomBufferPointer);
}
else
{
lilv_instance_connect_port(pInstance, pluginIndex, buffer);
}
lilv_instance_connect_port(pInstance, pluginIndex, buffer);
this->outputAtomBuffers.at(i) = (char *)buffer;
}
}
}
void Lv2Effect::Deactivate()
{
if (!activated)
{
return;
}
activated = false;
if (worker)
{
worker->Close();
}
lilv_instance_deactivate(pInstance);
}
static inline void CopyBuffer(float *restrict input, float *restrict output, uint32_t frames)
{
for (uint32_t i = 0; i < frames; ++i)
{
output[i] = input[i];
}
}
size_t Lv2Effect::stageToOutput(size_t outputIndex, size_t nFrames)
{
size_t thisTime = nFrames - outputIndex;
size_t stagedOutputAvailable = this->stagingBufferSize - this->stagingOutputIx;
if (stagedOutputAvailable < thisTime)
{
thisTime = stagedOutputAvailable;
}
if (thisTime)
{
for (size_t ch = 0; ch < this->GetNumberOfOutputAudioBuffers(); ++ch)
{
float *restrict pIn = this->outputStagingBufferPointers.at(ch) + this->stagingOutputIx;
float *restrict pOut = this->GetAudioOutputBuffer(ch) + outputIndex;
for (size_t i = 0; i < thisTime; ++i)
{
pOut[i] = pIn[i];
}
}
this->stagingOutputIx += thisTime;
}
return outputIndex + thisTime;
}
void Lv2Effect::copyAtomBufferEventSequence(LV2_Atom_Sequence *controlInput, LV2_Atom_Forge &outputForge)
{
LV2_ATOM_SEQUENCE_FOREACH(controlInput, ev)
{
lv2_atom_forge_frame_time(&outputForge, ev->time.frames);
lv2_atom_forge_raw(&outputForge, &(ev->body), ev->body.size); // literal copy of the atom body.
}
}
size_t Lv2Effect::stageToInput(size_t inputSampleOffset, size_t samples)
{
size_t thisTime = samples - inputSampleOffset;
size_t inputAvailable = this->stagingBufferSize - this->stagingInputIx;
if (thisTime > inputAvailable)
{
thisTime = inputAvailable;
}
// copy into staging buffers.
for (size_t nInput = 0; nInput < this->inputAudioBuffers.size(); ++nInput)
{
float *restrict pInput = this->inputAudioBuffers[nInput] + inputSampleOffset;
float *restrict pOutput = this->inputStagingBufferPointers.at(nInput) + this->stagingInputIx;
for (size_t i = 0; i < thisTime; ++i)
{
pOutput[i] = pInput[i];
}
}
for (size_t nSidechain = 0; nSidechain < this->inputSidechainBuffers.size(); ++nSidechain)
{
float *restrict pInput = this->inputSidechainBuffers[nSidechain] + inputSampleOffset;
float *restrict pOutput = this->sidechainStagingBufferPointers.at(nSidechain) + this->stagingInputIx;
for (size_t i = 0; i < thisTime; ++i)
{
pOutput[i] = pInput[i];
}
}
this->stagingInputIx += thisTime;
inputSampleOffset += thisTime;
if (stagingInputIx == this->stagingBufferSize)
{
// close off the atom input frame.
if (stagedInputAtomBufferPointer)
{
lv2_atom_forge_pop(&this->stagedInputForgeRt, &staged_input_frame);
}
if (stagedOutputAtomBufferPointer)
{
ResetOutputAtomBuffer((char *)stagedOutputAtomBufferPointer);
}
lilv_instance_run(pInstance, this->stagingBufferSize);
if (worker)
{
worker->EmitResponses();
}
if (stagedOutputAtomBufferPointer)
{
copyAtomBufferEventSequence((LV2_Atom_Sequence *)stagedOutputAtomBufferPointer, this->outputForgeRt);
}
this->stagingInputIx = 0;
this->stagingOutputIx = 0;
this->resetStagedInputAtomBuffer();
}
return inputSampleOffset;
}
void Lv2Effect::resetStagedInputAtomBuffer()
{
if (stagedInputAtomBufferPointer)
{
const uint32_t notify_capacity = pHost->GetAtomBufferSize();
lv2_atom_forge_set_buffer(
&(this->stagedInputForgeRt), (uint8_t *)(this->stagedInputAtomBufferPointer), notify_capacity);
lv2_atom_forge_sequence_head(&this->inputForgeRt, &staged_input_frame, urids.units__frame);
}
}
void Lv2Effect::RunWithBufferStaging(uint32_t samples, RealtimeRingBufferWriter *realtimeRingBufferWriter)
{
// accumulte control input sequence until we can execute a run operation.
if (this->inputAtomBuffers.size() != 0)
{
lv2_atom_forge_pop(&this->inputForgeRt, &input_frame);
LV2_Atom_Sequence *controlInput = (LV2_Atom_Sequence *)GetAtomInputBuffer(0);
copyAtomBufferEventSequence(controlInput, this->stagedInputForgeRt);
}
// Prepare ACTUAL control output port.
if (this->stagedOutputAtomBufferPointer)
{
const uint32_t notify_capacity = pHost->GetAtomBufferSize();
lv2_atom_forge_set_buffer(
&(this->outputForgeRt), (uint8_t *)(this->inputAtomBuffers.at(0)), notify_capacity);
lv2_atom_forge_sequence_head(&this->outputForgeRt, &output_frame, urids.units__frame);
}
uint32_t inputSampleOffset = 0;
uint32_t outputSampleOffset = 0;
while (true)
{
outputSampleOffset = stageToOutput(outputSampleOffset, samples);
CheckStagingBufferSentries();
if (inputSampleOffset == samples)
{
break;
}
inputSampleOffset = stageToInput(inputSampleOffset, samples);
}
// no staging data avaialble? Output zeros.
if (outputSampleOffset != samples)
{
size_t thisTime = samples - outputSampleOffset;
for (size_t ch = 0; ch < this->GetNumberOfOutputAudioBuffers(); ++ch)
{
float *pOut = this->GetAudioOutputBuffer(ch) + outputSampleOffset;
for (size_t i = 0; i < thisTime; ++i)
{
pOut[i] = 0;
}
}
}
MixOutput(samples, realtimeRingBufferWriter);
}
inline void Lv2Effect::MixOutput(uint32_t samples, RealtimeRingBufferWriter *realtimeRingBufferWriter)
{
// for zero-input plugins, mix the plugin output with the input signal.
if (this->inputAudioPortIndices.size() == 0)
{
// mix a zero input controls into the output buffer using a triangular mix curve.
float pluginLevel = std::max(1.0f, this->zeroInputMix * 2);
float inputLevel = std::max(1.0f, (1 - this->zeroInputMix) * 2);
// case
// 1 plugin output into 1 output.
// 2 plugin outputs into 2 outputs.
if (this->outputAudioBuffers.size() == this->outputMixBuffers.size())
{
for (size_t i = 0; i < this->outputMixBuffers.size(); ++i)
{
float *restrict input;
if (i >= this->inputAudioBuffers.size())
{
if (this->inputAudioBuffers.size() == 0)
{
break;
}
input = this->inputAudioBuffers.at(0);
}
else
{
input = this->inputAudioBuffers.at(i);
}
float *restrict pluginOutput = this->outputMixBuffers.at(i).data();
float *restrict finalOutput = this->outputAudioBuffers.at(i);
for (uint32_t i = 0; i < samples; ++i)
{
finalOutput[i] = input[i] * inputLevel + pluginOutput[i] * pluginLevel;
}
}
}
else if (this->outputAudioPortIndices.size() == 1 && this->outputAudioBuffers.size() == 2)
{
// 1 plugin output into 2 outputs.
float *restrict pluginOutput = this->outputMixBuffers.at(0).data();
for (size_t i = 0; i < this->outputMixBuffers.size(); ++i)
{
float *restrict input = this->inputAudioBuffers.at(i);
float *restrict finalOutput = this->outputAudioBuffers.at(i);
for (uint32_t i = 0; i < samples; ++i)
{
finalOutput[i] = input[i] * inputLevel + pluginOutput[i] * pluginLevel;
}
}
}
else
{
// e.g. 2 plugin outputs into 1 output (should never happen)
std::runtime_error("Internal error 0xEA48");
}
}
// do soft bypass.
if (this->bypassSamplesRemaining == 0)
{
if (this->currentBypass == 0)
{
// replace the contents of the output buffer(s) with the input buffer(s).
if (this->outputAudioBuffers.size() == 1)
{
CopyBuffer(this->inputAudioBuffers.at(0), this->outputAudioBuffers.at(0), samples);
}
else
{
if (this->inputAudioBuffers.size() == 1)
{
CopyBuffer(this->inputAudioBuffers.at(0), this->outputAudioBuffers.at(0), samples);
CopyBuffer(this->inputAudioBuffers.at(0), this->outputAudioBuffers.at(1), samples);
}
else
{
CopyBuffer(this->inputAudioBuffers.at(0), this->outputAudioBuffers.at(0), samples);
CopyBuffer(this->inputAudioBuffers.at(1), this->outputAudioBuffers.at(1), samples);
}
}
} // else leave the output alone.
}
else
{
double currentBypass = this->currentBypass;
double currentBypassDx = this->currentBypassDx;
int32_t bypassSamplesRemaining = (int)this->bypassSamplesRemaining;
if (this->outputAudioBuffers.size() == 1)
{
float *restrict input = this->inputAudioBuffers.at(0);
float *restrict output = this->outputAudioBuffers.at(0);
for (uint32_t i = 0; i < samples; ++i)
{
output[i] = currentBypass * output[i] + (1 - currentBypass) * input[i];
if (--bypassSamplesRemaining == 0)
{
currentBypassDx = 0;
currentBypass = this->targetBypass;
}
currentBypass += currentBypassDx;
}
}
else
{
float *restrict inputL;
float *restrict inputR;
if (this->inputAudioBuffers.size() == 1)
{
inputL = inputR = inputAudioBuffers.at(0);
}
else
{
inputL = inputAudioBuffers.at(0);
inputR = inputAudioBuffers.at(1);
}
float *restrict outputL = outputAudioBuffers.at(0);
float *restrict outputR = outputAudioBuffers.at(1);
for (uint32_t i = 0; i < samples; ++i)
{
outputL[i] = currentBypass * outputL[i] + (1 - currentBypass) * inputL[i];
outputR[i] = currentBypass * outputR[i] + (1 - currentBypass) * inputR[i];
if (--bypassSamplesRemaining == 0)
{
currentBypassDx = 0;
currentBypass = this->targetBypass;
}
currentBypass += currentBypassDx;
}
}
if (bypassSamplesRemaining <= 0)
{
this->bypassSamplesRemaining = 0;
this->currentBypass = this->targetBypass;
this->currentBypassDx = 0;
}
else
{
this->currentBypass = currentBypass;
this->currentBypassDx = currentBypassDx;
this->bypassSamplesRemaining = bypassSamplesRemaining;
}
}
RelayPatchSetMessages(this->instanceId, realtimeRingBufferWriter);
}
void Lv2Effect::Run(uint32_t samples, RealtimeRingBufferWriter *realtimeRingBufferWriter)
{
// close off the atom input frame.
if (this->inputAtomBuffers.size() != 0)
{
lv2_atom_forge_pop(&this->inputForgeRt, &input_frame);
}
lilv_instance_run(pInstance, samples);
if (worker)
{
// relay worker response
worker->EmitResponses();
}
MixOutput(samples, realtimeRingBufferWriter);
}
LV2_Worker_Status Lv2Effect::worker_schedule_fn(LV2_Worker_Schedule_Handle handle,
uint32_t size,
const void *data)
{
Lv2Effect *this_ = (Lv2Effect *)handle;
this_->worker->ScheduleWork(size, data);
return LV2_WORKER_SUCCESS;
}
struct BufferHeader
{
uint32_t size;
uint32_t type;
};
void Lv2Effect::ResetInputAtomBuffer(char *data)
{
BufferHeader *header = (BufferHeader *)data;
header->size = sizeof(LV2_Atom_Sequence_Body);
header->type = urids.atom__Sequence;
}
void Lv2Effect::ResetOutputAtomBuffer(char *data)
{
BufferHeader *header = (BufferHeader *)data;
header->size = pHost->GetAtomBufferSize() - 8;
header->type = urids.atom__Chunk;
}
void Lv2Effect::BypassDezipperSet(float targetValue)
{
this->targetBypass = targetValue;
this->currentBypass = targetValue;
this->currentBypassDx = 0;
this->bypassSamplesRemaining = 0;
}
void Lv2Effect::BypassDezipperTo(float targetValue)
{
this->targetBypass = targetValue;
double dx = targetValue - this->currentBypass;
if (dx != 0)
{
this->bypassSamplesRemaining = (int)(bypassStartingSamples * std::abs(dx));
if (this->bypassStartingSamples == 0)
{
currentBypassDx = 0;
this->currentBypass = targetBypass;
}
else
{
this->currentBypassDx = dx / this->bypassSamplesRemaining;
}
}
}
void Lv2Effect::ResetAtomBuffers()
{
for (size_t i = 0; i < this->inputAtomBuffers.size(); ++i)
{
ResetInputAtomBuffer(this->inputAtomBuffers.at(i));
}
for (size_t i = 0; i < this->outputAtomBuffers.size(); ++i)
{
ResetOutputAtomBuffer(this->outputAtomBuffers.at(i));
}
if (inputAtomBuffers.size() != 0)
{
const uint32_t notify_capacity = pHost->GetAtomBufferSize();
lv2_atom_forge_set_buffer(
&(this->inputForgeRt), (uint8_t *)(this->inputAtomBuffers.at(0)), notify_capacity);
// Start a sequence in the notify input port.
lv2_atom_forge_sequence_head(&this->inputForgeRt, &input_frame, urids.units__frame);
}
}
void Lv2Effect::RequestPatchProperty(LV2_URID uridUri)
{
lv2_atom_forge_frame_time(&inputForgeRt, 0);
LV2_Atom_Forge_Frame objectFrame;
LV2_Atom_Forge_Ref set =
lv2_atom_forge_object(&inputForgeRt, &objectFrame, 0, urids.patch__Get);
lv2_atom_forge_key(&inputForgeRt, urids.patch__property);
lv2_atom_forge_urid(&inputForgeRt, uridUri);
lv2_atom_forge_pop(&inputForgeRt, &objectFrame);
}
void Lv2Effect::RequestAllPathPatchProperties()
{
for (LV2_URID urid : this->pathProperties)
{
RequestPatchProperty(urid);
}
}
void Lv2Effect::SetPatchProperty(LV2_URID uridUri, size_t size, LV2_Atom *value)
{
lv2_atom_forge_frame_time(&inputForgeRt, 0);
LV2_Atom_Forge_Frame objectFrame;
LV2_Atom_Forge_Ref set =
lv2_atom_forge_object(&inputForgeRt, &objectFrame, 0, urids.patch__Set);
{
lv2_atom_forge_key(&inputForgeRt, urids.patch__property);
lv2_atom_forge_urid(&inputForgeRt, uridUri);
lv2_atom_forge_key(&inputForgeRt, urids.patch__value);
lv2_atom_forge_write(&inputForgeRt, value, size);
}
lv2_atom_forge_pop(&inputForgeRt, &objectFrame);
this->requestStateChangedNotification = true;
}
void Lv2Effect::RelayPatchSetMessages(uint64_t instanceId, RealtimeRingBufferWriter *realtimeRingBufferWriter)
{
LV2_Atom_Sequence *controlOutput = (LV2_Atom_Sequence *)GetAtomOutputBuffer();
if (controlOutput == nullptr)
{
return;
}
bool maybeStateChanged = false;
LV2_ATOM_SEQUENCE_FOREACH(controlOutput, ev)
{
// frame_offset = ev->time.frames; // not really interested.
if (lv2_atom_forge_is_object_type(&this->outputForgeRt, ev->body.type))
{
const LV2_Atom_Object *obj = (const LV2_Atom_Object *)&ev->body;
if (obj->body.otype == urids.state__StateChanged)
{
requestStateChangedNotification = true;
}
else if (obj->body.otype == urids.patch__Set) // patch_Set is handled elsewhere.
{
maybeStateChanged = true;
realtimeRingBufferWriter->AtomOutput(instanceId, obj->atom.size + sizeof(obj->atom), (uint8_t *)obj);
}
}
}
if (this->requestStateChangedNotification)
{
requestStateChangedNotification = false;
realtimeRingBufferWriter->Lv2StateChanged(instanceId);
}
else if (maybeStateChanged)
{
realtimeRingBufferWriter->MaybeLv2StateChanged(instanceId);
}
}
void Lv2Effect::GatherPathPatchProperties(IPatchWriterCallback *cbPatchWriter)
{
if (pathPropertyWriters.size() != 0)
{
LV2_Atom_Sequence *controlInput = (LV2_Atom_Sequence *)GetAtomOutputBuffer();
if (controlInput == nullptr)
{
return;
}
LV2_ATOM_SEQUENCE_FOREACH(controlInput, ev)
{
auto frame_offset = ev->time.frames; // not really interested.
if (lv2_atom_forge_is_object_type(&this->outputForgeRt, ev->body.type))
{
const LV2_Atom_Object *obj = (const LV2_Atom_Object *)&ev->body;
if (obj->body.otype == urids.patch__Set)
{
// Get the property and value of the set message
const LV2_Atom *property = NULL;
const LV2_Atom *value = NULL;
lv2_atom_object_get(
obj,
urids.patch__property, &property,
urids.patch__value, &value,
0);
if (property && property->type == urids.atom__URID && value)
{
LV2_URID key = ((const LV2_Atom_URID *)property)->body;
for (PatchPropertyWriter &pathPropertyWriter : pathPropertyWriters)
{
if (key == pathPropertyWriter.patchPropertyUrid)
{
auto buffer = pathPropertyWriter.AquireWriteBuffer();
size_t atom_size = value->size + sizeof(LV2_Atom);
buffer->memory.resize(atom_size);
memcpy(buffer->memory.data(), value, atom_size);
break;
}
}
}
}
}
}
for (auto &writer : this->pathPropertyWriters)
{
writer.FlushWrites(cbPatchWriter);
}
}
}
void Lv2Effect::GatherPatchProperties(RealtimePatchPropertyRequest *pRequest)
{
if (pRequest->requestType == RealtimePatchPropertyRequest::RequestType::PatchGet)
{
LV2_Atom_Sequence *controlInput = (LV2_Atom_Sequence *)GetAtomOutputBuffer();
if (controlInput == nullptr)
{
return;
}
LV2_ATOM_SEQUENCE_FOREACH(controlInput, ev)
{
auto frame_offset = ev->time.frames; // not really interested.
if (lv2_atom_forge_is_object_type(&this->outputForgeRt, ev->body.type))
{
const LV2_Atom_Object *obj = (const LV2_Atom_Object *)&ev->body;
if (obj->body.otype == urids.patch__Set)
{
// Get the property and value of the set message
const LV2_Atom *property = NULL;
const LV2_Atom *value = NULL;
lv2_atom_object_get(
obj,
urids.patch__property, &property,
urids.patch__value, &value,
0);
if (property && property->type == urids.atom__URID && value)
{
LV2_URID key = ((const LV2_Atom_URID *)property)->body;
if (key == pRequest->uridUri)
{
int atom_size = value->size + sizeof(LV2_Atom);
pRequest->SetSize(atom_size);
memcpy(pRequest->GetBuffer(), value, atom_size);
break;
}
}
}
}
}
}
}
void Lv2Effect::SetLv2State(Lv2PluginState &state)
{
if (state.isValid_)
{
return;
}
if (!this->stateInterface)
{
return;
}
try
{
this->stateInterface->Restore(state);
}
catch (const std::exception &e)
{
Lv2Log::error("Failed to restore LV2 state.");
}
}
bool Lv2Effect::GetLv2State(Lv2PluginState *state)
{
if (!this->stateInterface)
return false;
try
{
if (this->stateInterface == nullptr)
{
state->Erase();
return false;
}
*state = this->stateInterface->Save();
state->isValid_ = true;
return true;
}
catch (const std::exception &e)
{
state->Erase();
throw;
}
}
void Lv2Effect::OnLogError(const char *message)
{
// only errors get transmitted to the client.
strncpy(this->errorMessage, message, sizeof(errorMessage));
errorMessage[sizeof(errorMessage) - 1] = '\0';
this->hasErrorMessage = true;
}
void Lv2Effect::OnLogWarning(const char *message)
{
Lv2Log::warning(message);
}
void Lv2Effect::OnLogInfo(const char *message)
{
Lv2Log::info(message);
}
void Lv2Effect::OnLogDebug(const char *message)
{
Lv2Log::debug(message);
}
bool Lv2Effect::GetRequestStateChangedNotification() const { return requestStateChangedNotification; }
void Lv2Effect::SetRequestStateChangedNotification(bool value) { requestStateChangedNotification = value; }
uint64_t Lv2Effect::GetMaxInputControl() const { return maxInputControlPort; }
bool Lv2Effect::IsInputControl(uint64_t index) const
{
if (index >= isInputControlPort.size())
return false;
return isInputControlPort.at(index);
}
float Lv2Effect::GetDefaultInputControlValue(uint64_t index) const
{
return defaultInputControlValues.at(index);
}
std::string Lv2Effect::GetPathPatchProperty(const std::string &propertyUri)
{
if (!this->mainThreadPathProperties.contains(propertyUri))
{
return "";
}
return this->mainThreadPathProperties[propertyUri];
}
void Lv2Effect::SetPathPatchProperty(const std::string &propertyUri, const std::string &jsonAtom)
{
mainThreadPathProperties[propertyUri] = jsonAtom;
}
void Lv2Effect::EnableBufferStaging(size_t bufferSize )
{
size_t nInputs = this->GetNumberOfInputAudioBuffers();
size_t nSidechainInputs = this->GetNumberOfSidechainAudioBuffers();
size_t nOutputs = this->GetNumberOfOutputAudioBuffers();
stagingBufferSize = bufferSize;
stagingOutputIx = bufferSize;
stagingInputIx = 0;
inputStagingBuffers.resize(nInputs);
outputStagingBuffers.resize(nOutputs);
inputStagingBufferPointers.resize(nInputs);
outputStagingBufferPointers.resize(nOutputs);
if (inputAtomBuffers.size() != 0)
{
stagedInputAtomBuffer.resize(pHost->GetAtomBufferSize());
stagedInputAtomBufferPointer = stagedInputAtomBuffer.data();
resetStagedInputAtomBuffer();
}
else
{
stagedInputAtomBufferPointer = nullptr;
}
stagedOutputAtomBufferPointer = nullptr;
if (outputAtomBuffers.size() != 0)
{
stagedOutputAtomBuffer.resize(pHost->GetAtomBufferSize());
stagedOutputAtomBufferPointer = stagedOutputAtomBuffer.data();
}
for (size_t i = 0; i < nInputs; ++i)
{
inputStagingBuffers.at(i).resize(bufferSize + 1);
inputStagingBuffers[i][bufferSize] = 99.9f; // guard entry
inputStagingBufferPointers.at(i) = inputStagingBuffers.at(i).data();
}
for (size_t i = 0; i < nSidechainInputs; ++i)
{
sidechainStagingBuffers.at(i).resize(bufferSize + 1);
sidechainStagingBuffers[i][bufferSize] = 99.9f; // guard entry
sidechainStagingBufferPointers.at(i) = sidechainStagingBuffers.at(i).data();
}
for (size_t i = 0; i < nOutputs; ++i)
{
outputStagingBuffers.at(i).resize(bufferSize + 1);
outputStagingBuffers[i][bufferSize] = 99.9f; // guard entry
outputStagingBufferPointers.at(i) = outputStagingBuffers.at(i).data();
}
}
static size_t NextPowerOfTwo(size_t value)
{
size_t i = 1;
while (i < value && i < 65536UL)
{
i *= 2;
}
return i;
}
size_t Lv2Effect::GetStagedBufferSize() const
{
size_t pluginBlockLength = pHost->GetMaxAudioBufferSize();
if (info->minBlockLength() != -1 || info->maxBlockLength() != -1)
{
if (info->minBlockLength() != -1 && pluginBlockLength < info->minBlockLength())
{
pluginBlockLength = info->minBlockLength();
}
if (info->maxBlockLength() != -1 && pluginBlockLength > info->maxBlockLength())
{
pluginBlockLength = info->maxBlockLength();
}
if (info->powerOf2BlockLength())
{
pluginBlockLength = NextPowerOfTwo(pluginBlockLength);
}
}
return pluginBlockLength;
}
bool Lv2Effect::RequiresBufferStaging() const
{
return GetStagedBufferSize() != pHost->GetMaxAudioBufferSize();
}
float *Lv2Effect::GetAudioInputBuffer(int index) const
{
if (index < 0 || index >= this->inputAudioBuffers.size())
throw std::range_error("Lv2Effect::GetAudioInputBuffer");
return this->inputAudioBuffers.at(index);
}
float *Lv2Effect::GetAudioSidechainBuffer(int index) const
{
if (index < 0 || index >= this->inputSidechainBuffers.size())
throw std::range_error("Lv2Effect::GetAudioSidechainBuffer");
return this->inputSidechainBuffers.at(index);
}
float *Lv2Effect::GetAudioOutputBuffer(int index) const
{
if (index < 0 || index >= this->outputAudioBuffers.size())
{
throw std::range_error("Lv2Effect::GetAudioOutputBuffer");
}
return this->outputAudioBuffers.at(index);
}