- initial import

src/engine/audio/Audio_Null.h

@@ -0,0 +1,86 @@
+#ifndef __AUDIO_NULL_H
+#define __AUDIO_NULL_H
+
+#include <thread>
+#include "Audio_Interface.h"
+
+namespace Audio
+{
+  class NullTimer
+  {
+  public:
+    class Delegate
+    {
+    public:
+      virtual void onTimerSignal(NullTimer& timer) = 0;
+    };
+
+  protected:
+    std::thread mWorkerThread;
+    volatile bool mShutdown;
+    Delegate* mDelegate;
+    int mInterval,  // Interval - wanted number of milliseconds
+        mTail; // Number of milliseconds that can be sent immediately to sink
+    std::string mThreadName;
+
+    void start();
+    void stop();
+    void run();
+  public:
+    /* Interval is in milliseconds. */
+    NullTimer(int interval, Delegate* delegate, const char* name = nullptr);
+    ~NullTimer();
+  };
+
+  class NullInputDevice: public InputDevice, public NullTimer::Delegate
+  {
+  protected:
+    void* mBuffer = nullptr;
+    std::shared_ptr<NullTimer> mTimer;
+    int64_t mTimeCounter = 0, mDataCounter = 0;
+  public:
+    NullInputDevice();
+    virtual ~NullInputDevice();
+
+    bool open() override;
+    void close() override;
+    Format getFormat() override;
+
+    void onTimerSignal(NullTimer& timer) override;
+  };
+
+  class NullOutputDevice: public OutputDevice, public NullTimer::Delegate
+  {
+  protected:
+    std::shared_ptr<NullTimer> mTimer;
+    void* mBuffer = nullptr;
+    int64_t mDataCounter = 0, mTimeCounter = 0;
+  public:
+    NullOutputDevice();
+    virtual ~NullOutputDevice();
+
+    bool open() override;
+    void close() override;
+    Format getFormat() override;
+
+    void onTimerSignal(NullTimer& timer) override;
+  };
+
+  class NullEnumerator: public Enumerator
+  {
+  public:
+    NullEnumerator();
+    ~NullEnumerator();
+
+    void open(int direction) override;
+    void close() override;
+
+    int count() override;
+    std::tstring nameAt(int index) override;
+    int idAt(int index) override;
+    int indexOfDefaultDevice() override;
+
+  };
+}
+
+#endif