ASIOPortAudioInterface.hpp

#pragma once
#include <Audio/AudioInterface.hpp>
#include <Audio/PortAudioInterface.hpp>
#include <Audio/Settings/Model.hpp>
#include <Audio/Settings/View.hpp>
 
#include <score/command/Dispatchers/SettingsCommandDispatcher.hpp>
#include <score/tools/Bind.hpp>
#include <score/widgets/SignalUtils.hpp>
 
#include <QComboBox>
#include <QFormLayout>
#include <QPushButton>
 
#if __has_include(<pa_asio.h>)
#include <pa_asio.h>
 
#if !defined(WIN32_LEAN_AND_MEAN)
#define WIN32_LEAN_AND_MEAN
#endif
#if !defined(NOMINMAX)
#define NOMINMAX
#endif
#include <Windows.h>
#endif
 
namespace Audio
{
#if __has_include(<pa_asio.h>)
class ASIOFactory final
    : public QObject
    , public AudioFactory
{
  SCORE_CONCRETE("6b34c6dd-8201-448f-859c-d014f8d01448")
public:
  std::vector<PortAudioCard> devices;
 
  ASIOFactory() { rescan(); }
 
  ~ASIOFactory() override { }
  bool available() const noexcept override { return true; }
  void
  initialize(Audio::Settings::Model& set, const score::ApplicationContext& ctx) override
  {
  }
 
  void rescan()
  {
    devices.clear();
    PortAudioScope portaudio;
 
    devices.push_back(PortAudioCard{{}, {}, QObject::tr("No device"), -1, 0, 0, {}});
    for(int i = 0; i < Pa_GetHostApiCount(); i++)
    {
      auto hostapi = Pa_GetHostApiInfo(i);
      if(hostapi->type == PaHostApiTypeId::paASIO)
      {
        for(int card = 0; card < hostapi->deviceCount; card++)
        {
          auto dev_idx = Pa_HostApiDeviceIndexToDeviceIndex(i, card);
          auto dev = Pa_GetDeviceInfo(dev_idx);
          auto raw_name = QString::fromUtf8(Pa_GetDeviceInfo(dev_idx)->name);
 
          devices.push_back(PortAudioCard{
              "ASIO", raw_name, raw_name, dev_idx, dev->maxInputChannels,
              dev->maxOutputChannels, hostapi->type, dev->defaultSampleRate});
        }
      }
    }
  }
 
  QString prettyName() const override { return QObject::tr("ASIO"); }
  std::shared_ptr<ossia::audio_engine> make_engine(
      const Audio::Settings::Model& set, const score::ApplicationContext& ctx) override
  {
    return std::make_shared<ossia::portaudio_engine>(
        "ossia score", set.getCardIn().toStdString(), set.getCardOut().toStdString(),
        set.getDefaultIn(), set.getDefaultOut(), set.getRate(), set.getBufferSize(),
        paASIO);
  }
 
  void setCard(QComboBox* combo, QString val)
  {
    auto dev_it = ossia::find_if(
        devices, [&](const PortAudioCard& d) { return d.raw_name == val; });
    if(dev_it != devices.end())
    {
      combo->setCurrentIndex(dev_it->out_index);
    }
  }
 
  QWidget* make_settings(
      Audio::Settings::Model& m, Audio::Settings::View& v,
      score::SettingsCommandDispatcher& m_disp, QWidget* parent) override
  {
    auto w = new QWidget{parent};
    auto lay = new QFormLayout{w};
 
    auto card_list = new QComboBox{w};
    auto show_ui = new QPushButton{tr("Show Control Panel"), w};
 
    // Disabled case
    card_list->addItem(devices.front().pretty_name, 0);
    devices.front().out_index = 0;
 
    // Normal devices
    for(std::size_t i = 1; i < devices.size(); i++)
    {
      auto& card = devices[i];
      card_list->addItem(card.pretty_name, (int)i);
      card.out_index = card_list->count() - 1;
    }
 
    using Model = Audio::Settings::Model;
 
    {
      lay->addRow(QObject::tr("Device"), card_list);
 
      auto update_dev = [=, &m, &m_disp](const PortAudioCard& dev) {
        if(dev.raw_name != m.getCardOut())
        {
          m_disp.submitDeferredCommand<Audio::Settings::SetModelCardIn>(m, dev.raw_name);
          m_disp.submitDeferredCommand<Audio::Settings::SetModelCardOut>(
              m, dev.raw_name);
          m_disp.submitDeferredCommand<Audio::Settings::SetModelDefaultIn>(
              m, dev.inputChan);
          m_disp.submitDeferredCommand<Audio::Settings::SetModelDefaultOut>(
              m, dev.outputChan);
        }
      };
 
      QObject::connect(
          card_list, SignalUtils::QComboBox_currentIndexChanged_int(), &v, [=](int i) {
            auto& device = devices[card_list->itemData(i).toInt()];
            update_dev(device);
          });
 
      if(m.getCardOut().isEmpty())
      {
        if(!devices.empty())
        {
          update_dev(devices.front());
        }
      }
      else
      {
        setCard(card_list, m.getCardOut());
      }
    }
 
    {
      lay->addWidget(show_ui);
      connect(show_ui, &QPushButton::clicked, this, [=] {
        auto& dev = devices[card_list->itemData(card_list->currentIndex()).toInt()];
        PortAudioScope portaudio;
        PaAsio_ShowControlPanel(dev.dev_idx, GetActiveWindow());
      });
    }
 
    addBufferSizeWidget(*w, m, v);
    addSampleRateWidget(*w, m, v);
 
    con(m, &Model::changed, w, [=, &m] { setCard(card_list, m.getCardOut()); });
    return w;
  }
};
#endif
 
}