New files for ProjectAudioManager...

... This eliminates some inclusions of ProjectManager, helping to free it from
cycles into a higher level

src/ProjectAudioManager.h

@@ -0,0 +1,53 @@
+/**********************************************************************
+
+Audacity: A Digital Audio Editor
+
+ProjectAudioManager.h
+
+Paul Licameli split from ProjectManager.h
+
+**********************************************************************/
+
+#ifndef __AUDACITY_PROJECT_AUDIO_MANAGER__
+#define __AUDACITY_PROJECT_AUDIO_MANAGER__
+
+#include "AudioIOListener.h" // to inherit
+#include "ClientData.h" // to inherit
+
+class AudacityProject;
+struct AudioIOStartStreamOptions;
+
+class ProjectAudioManager final
+   : public ClientData::Base
+   , public AudioIOListener
+{
+public:
+   static ProjectAudioManager &Get( AudacityProject &project );
+   static const ProjectAudioManager &Get( const AudacityProject &project );
+
+   explicit ProjectAudioManager( AudacityProject &project )
+      : mProject{ project }
+   {}
+   ~ProjectAudioManager() override;
+
+   bool IsTimerRecordCancelled() { return mTimerRecordCanceled; }
+   void SetTimerRecordCancelled() { mTimerRecordCanceled = true; }
+   void ResetTimerRecordCancelled() { mTimerRecordCanceled = false; }
+
+private:
+   // Audio IO callback methods
+   void OnAudioIORate(int rate) override;
+   void OnAudioIOStartRecording() override;
+   void OnAudioIOStopRecording() override;
+   void OnAudioIONewBlockFiles(const AutoSaveFile & blockFileLog) override;
+
+   AudacityProject &mProject;
+
+   //flag for cancellation of timer record.
+   bool mTimerRecordCanceled{ false };
+};
+
+AudioIOStartStreamOptions DefaultPlayOptions( AudacityProject &project );
+AudioIOStartStreamOptions DefaultSpeedPlayOptions( AudacityProject &project );
+
+#endif