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jcelerierjcelerier
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audio: implement an ASIO-based audio backend. Fixes #1422 
1 parent 4439173 commit f39f3c1

5 files changed

Lines changed: 225 additions & 1 deletion

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‎3rdparty/libossia‎

‎src/plugins/score-plugin-audio/Audio/ASIOInterface.hpp‎

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#pragma once
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#include <ossia/detail/config.hpp>
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#include <Audio/AudioInterface.hpp>
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#include <Audio/Settings/Model.hpp>
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#include <Audio/Settings/View.hpp>
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#include <score/command/Dispatchers/SettingsCommandDispatcher.hpp>
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#include <score/tools/Bind.hpp>
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#include <score/widgets/SignalUtils.hpp>
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#include <QComboBox>
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#include <QFormLayout>
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#include <QPushButton>
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#include <QLabel>
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#if defined(OSSIA_ENABLE_ASIO)
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#include <ossia/audio/asio_protocol.hpp>
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extern AsioDrivers* asioDrivers;
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namespace Audio
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{
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struct ASIOCard
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{
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QString name;
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int driver_index{-1};
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int inputChan{};
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int outputChan{};
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};
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class NativeASIOFactory final
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: public QObject
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, public AudioFactory
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{
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SCORE_CONCRETE("2d21a3aa-f108-4e05-a3a0-8fd6b150bda5")
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public:
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std::vector<ASIOCard> devices;
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NativeASIOFactory() { rescan(); }
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~NativeASIOFactory() override { }
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bool available() const noexcept override { return !devices.empty(); }
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void
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initialize(Audio::Settings::Model& set, const score::ApplicationContext& ctx) override
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{
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rescan();
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if(!set.getCardOut().isEmpty())
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{
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// Check that the saved device still exists
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auto it = std::find_if(
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devices.begin(), devices.end(),
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[&](const ASIOCard& d) { return d.name == set.getCardOut(); });
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if(it != devices.end())
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return;
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}
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// Auto-select first device
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if(devices.size() > 1)
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{
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auto& dev = devices[1]; // [0] is "No device"
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set.setCardIn(dev.name);
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set.setCardOut(dev.name);
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set.setDefaultIn(dev.inputChan);
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set.setDefaultOut(dev.outputChan);
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}
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}
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void rescan()
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{
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devices.clear();
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devices.push_back(ASIOCard{QObject::tr("No device"), -1, 0, 0});
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try
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{
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auto cards = ossia::asio_engine::enumerate_drivers();
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for(auto& card : cards)
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{
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// To get channel counts, we must briefly load each driver
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int ins = 0, outs = 0;
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if(loadAsioDriver(const_cast<char*>(card.name.c_str())))
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{
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ASIODriverInfo info{};
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info.asioVersion = 2;
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if(ASIOInit(&info) == ASE_OK)
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{
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long numIn = 0, numOut = 0;
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ASIOGetChannels(&numIn, &numOut);
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ins = (int)numIn;
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outs = (int)numOut;
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ASIOExit();
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}
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if(asioDrivers)
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asioDrivers->removeCurrentDriver();
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}
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devices.push_back(
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ASIOCard{QString::fromStdString(card.name), card.driver_index, ins, outs});
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}
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}
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catch(...)
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{
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}
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}
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QString prettyName() const override { return QObject::tr("ASIOSDK"); }
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std::shared_ptr<ossia::audio_engine> make_engine(
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const Audio::Settings::Model& set, const score::ApplicationContext& ctx) override
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{
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return std::make_shared<ossia::asio_engine>(
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set.getCardOut().toStdString(), set.getDefaultIn(), set.getDefaultOut(),
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set.getRate(), set.getBufferSize());
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}
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void setCard(QComboBox* combo, QString val)
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{
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for(int i = 0; i < combo->count(); i++)
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{
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if(combo->itemData(i).toString() == val)
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{
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combo->setCurrentIndex(i);
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return;
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}
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}
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}
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QWidget* make_settings(
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Audio::Settings::Model& m, Audio::Settings::View& v,
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score::SettingsCommandDispatcher& m_disp, QWidget* parent) override
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{
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auto w = new QWidget{parent};
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auto lay = new QFormLayout{w};
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auto card_list = new QComboBox{w};
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auto show_ui = new QPushButton{tr("Show Control Panel"), w};
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// Populate device list
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for(std::size_t i = 0; i < devices.size(); i++)
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{
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auto& card = devices[i];
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card_list->addItem(card.name, card.name);
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}
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using Model = Audio::Settings::Model;
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{
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lay->addRow(QObject::tr("Device"), card_list);
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auto update_dev = [=, &m, &m_disp](const ASIOCard& dev) {
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if(dev.name != m.getCardOut())
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{
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m_disp.submitDeferredCommand<Audio::Settings::SetModelCardIn>(m, dev.name);
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m_disp.submitDeferredCommand<Audio::Settings::SetModelCardOut>(m, dev.name);
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m_disp.submitDeferredCommand<Audio::Settings::SetModelDefaultIn>(
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m, dev.inputChan);
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m_disp.submitDeferredCommand<Audio::Settings::SetModelDefaultOut>(
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m, dev.outputChan);
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}
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};
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QObject::connect(
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card_list, SignalUtils::QComboBox_currentIndexChanged_int(), &v, [=](int i) {
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if(i >= 0 && i < (int)devices.size())
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{
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update_dev(devices[i]);
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}
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});
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if(m.getCardOut().isEmpty())
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{
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if(devices.size() > 1)
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{
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update_dev(devices[1]);
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}
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}
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else
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{
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setCard(card_list, m.getCardOut());
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}
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}
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{
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lay->addWidget(show_ui);
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connect(show_ui, &QPushButton::clicked, this, [=] {
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int idx = card_list->currentIndex();
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if(idx > 0 && idx < (int)devices.size())
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{
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ossia::asio_engine::open_control_panel(devices[idx].name.toStdString());
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}
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});
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}
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addBufferSizeWidget(*w, m, v);
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addSampleRateWidget(*w, m, v);
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con(m, &Model::changed, w, [=, &m] { setCard(card_list, m.getCardOut()); });
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return w;
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}
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};
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}
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#endif

‎src/plugins/score-plugin-audio/Audio/Settings/Model.cpp‎

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@@ -92,6 +92,8 @@ void Model::initDriver(Audio::AudioFactory::ConcreteKey val)
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uid = "3533ee88-9a8d-486c-b20b-6c966cf4eaa0";
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else if(env == "alsa_miniaudio")
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uid = "e0c533da-a1f4-4795-90b5-a805cdfcb79f";
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else if(env == "asio")
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uid = "2d21a3aa-f108-4e05-a3a0-8fd6b150bda5";
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if(!uid.isEmpty())
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{

‎src/plugins/score-plugin-audio/CMakeLists.txt‎

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@@ -13,6 +13,7 @@ set(HDRS
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"${CMAKE_CURRENT_SOURCE_DIR}/Audio/ALSAInterface.hpp"
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"${CMAKE_CURRENT_SOURCE_DIR}/Audio/ALSAMiniAudioInterface.hpp"
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"${CMAKE_CURRENT_SOURCE_DIR}/Audio/ALSAPortAudioInterface.hpp"
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"${CMAKE_CURRENT_SOURCE_DIR}/Audio/ASIOInterface.hpp"
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"${CMAKE_CURRENT_SOURCE_DIR}/Audio/ASIOPortAudioInterface.hpp"
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"${CMAKE_CURRENT_SOURCE_DIR}/Audio/CoreAudioInterface.hpp"
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"${CMAKE_CURRENT_SOURCE_DIR}/Audio/CoreAudioPortAudioInterface.hpp"
@@ -89,6 +90,11 @@ if(OSSIA_ENABLE_PIPEWIRE)
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list(APPEND SCORE_FEATURES_LIST pipewire)
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endif()
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if(OSSIA_ENABLE_ASIO AND TARGET asio::sdk)
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target_link_libraries(${PROJECT_NAME} PRIVATE $<BUILD_INTERFACE:asio::sdk>)
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list(APPEND SCORE_FEATURES_LIST asio)
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endif()
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if(OSSIA_ENABLE_SDL)
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target_link_libraries(${PROJECT_NAME} PRIVATE $<BUILD_INTERFACE:ossia::sdl2>)
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list(APPEND SCORE_FEATURES_LIST sdl)

‎src/plugins/score-plugin-audio/score_plugin_audio.cpp‎

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@@ -6,6 +6,7 @@
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#include <Audio/ALSAInterface.hpp>
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#include <Audio/ALSAMiniAudioInterface.hpp>
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#include <Audio/ALSAPortAudioInterface.hpp>
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#include <Audio/ASIOInterface.hpp>
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#include <Audio/ASIOPortAudioInterface.hpp>
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#include <Audio/AudioApplicationPlugin.hpp>
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#include <Audio/AudioDevice.hpp>
@@ -151,6 +152,13 @@ std::vector<score::InterfaceBase*> score_plugin_audio::factories(
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#if defined(__linux__) && defined(OSSIA_AUDIO_MINIAUDIO)
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add_factories<FW<Audio::AudioFactory, Audio::ALSAMiniAudioFactory>>(vec, ctx, key);
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return vec;
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#endif
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}
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else if(forced_backend == "asio")
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{
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#if defined(OSSIA_AUDIO_ASIO)
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add_factories<FW<Audio::AudioFactory, Audio::NativeASIOFactory>>(vec, ctx, key);
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return vec;
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#endif
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}
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else if(forced_backend == "dummy")
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,
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Audio::ALSAFactory
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#endif
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#if defined(OSSIA_AUDIO_ASIO)
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,
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Audio::NativeASIOFactory
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#endif
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#if defined(OSSIA_AUDIO_PORTAUDIO)
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#if __has_include(<pa_asio.h>)
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,

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