File indexing completed on 2024-04-14 15:40:19

 /*
     SPDX-FileCopyrightText: 2020 David Edmundson <davidedmundson@kde.org>
 
     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #pragma once
 
 #include <QObject>
 #include <QPointer>
 #include <QQmlParserStatus>
 
 struct pa_stream;
 
 namespace QPulseAudio
 {
 class VolumeObject;
 
 /**
  * This class provides a way to see the "peak" volume currently playing of any VolumeObject
  */
 class VolumeMonitor : public QObject
 {
     Q_OBJECT
     /**
      * Object to monitor the volume of
      * This is the "PulseObject" role of any SinkInput, Sink or Output model
      * Setting to null will stop streaming
      */
     Q_PROPERTY(QPulseAudio::VolumeObject *target READ target WRITE setTarget NOTIFY targetChanged)
     /**
      * The peak output for the volume at any given moment
      * Value is normalised between 0 and 1
      */
     Q_PROPERTY(qreal volume MEMBER m_volume NOTIFY volumeChanged)
 
     /**
      * Whether monitoring is available
      */
     Q_PROPERTY(bool available READ isAvailable NOTIFY availableChanged)
 
 public:
     VolumeMonitor(QObject *parent = nullptr);
     ~VolumeMonitor();
 
     bool isAvailable() const;
 
     VolumeObject *target() const;
     void setTarget(VolumeObject *target);
 
 Q_SIGNALS:
     void volumeChanged();
     void targetChanged();
     void availableChanged();
 
 private:
     void createStream();
     void updateVolume(qreal volume);
     static void read_callback(pa_stream *s, size_t length, void *userdata);
     static void suspended_callback(pa_stream *s, void *userdata);
 
     VolumeObject *m_target = nullptr;
     pa_stream *m_stream = nullptr;
 
     qreal m_volume = 0;
 };
 
 }