AFV initial commit

src/blackcore/afv/audio/input.h

@@ -0,0 +1,94 @@
+#ifndef AUDIO_INPUT_H
+#define AUDIO_INPUT_H
+
+#include "blacksound/sampleprovider/bufferedwaveprovider.h"
+#include "blacksound/codecs/opusencoder.h"
+
+#include <QAudioDeviceInfo>
+#include <QAudioInput>
+#include <QString>
+#include <QDateTime>
+#include <QSharedPointer>
+
+class AudioInputBuffer : public QIODevice
+{
+    Q_OBJECT
+
+public:
+    AudioInputBuffer() {}
+
+    void start();
+    void stop();
+
+    qint64 readData(char *data, qint64 maxlen) override;
+    qint64 writeData(const char *data, qint64 len) override;
+
+signals:
+    void frameAvailable(const QByteArray &frame);
+
+private:
+    static constexpr qint64 frameSize = 960;
+    QByteArray m_buffer;
+};
+
+struct OpusDataAvailableArgs
+{
+    uint sequenceCounter = 0;
+    QByteArray audio;
+};
+
+struct InputVolumeStreamArgs
+{
+    QAudioDeviceInfo DeviceNumber;
+    float PeakRaw = 0.0;
+    float PeakDB = -1 * std::numeric_limits<float>::infinity();
+    float PeakVU = 0.0;
+};
+
+class Input : public QObject
+{
+    Q_OBJECT
+
+public:
+    Input(int sampleRate, QObject *parent = nullptr);
+
+    bool started() const;
+
+    int opusBytesEncoded() const;
+    void setOpusBytesEncoded(int opusBytesEncoded);
+
+    float volume() const;
+    void setVolume(float volume);
+
+    void start(const QAudioDeviceInfo &inputDevice);
+    void stop();
+
+signals:
+    void inputVolumeStream(const InputVolumeStreamArgs &args);
+    void opusDataAvailable(const OpusDataAvailableArgs &args);
+
+private:
+    void audioInDataAvailable(const QByteArray &frame);
+
+    static constexpr qint64 c_frameSize = 960;
+    int m_sampleRate = 0;
+
+    COpusEncoder m_encoder;
+    QScopedPointer<QAudioInput> m_audioInput;
+
+    bool m_started = false;
+    int m_opusBytesEncoded = 0;
+    float m_volume = 1.0f;
+    int m_sampleCount = 0;
+    float m_maxSampleInput = 0;
+
+    const int c_sampleCountPerEvent = 4800;
+    const float maxDb = 0;
+    const float minDb = -40;
+
+    uint m_audioSequenceCounter = 0;
+
+    AudioInputBuffer m_audioInputBuffer;
+};
+
+#endif // AIRCRAFTVHFINPUT_H