FifoPlayer: Implement IsPlaying()

Source/Core/Core/FifoPlayer/FifoPlayer.cpp

@@ -11,6 +11,7 @@
 #include "Common/CommonTypes.h"
 #include "Common/MsgHandler.h"
 #include "Core/ConfigManager.h"
+#include "Core/Core.h"
 #include "Core/CoreTiming.h"
 #include "Core/FifoPlayer/FifoAnalyzer.h"
 #include "Core/FifoPlayer/FifoDataFile.h"
@@ -67,6 +68,11 @@ void FifoPlayer::Close()
   m_FrameRangeEnd = 0;
 }
 
+bool FifoPlayer::IsPlaying() const
+{
+  return GetFile() != nullptr && Core::IsRunning();
+}
+
 class FifoPlayer::CPUCore final : public CPUCoreBase
 {
 public:

Source/Core/Core/FifoPlayer/FifoPlayer.h

@@ -70,6 +70,8 @@ public:
   // PowerPC state.
   std::unique_ptr<CPUCoreBase> GetCPUCore();
 
+  bool IsPlaying() const;
+
   FifoDataFile* GetFile() const { return m_File.get(); }
   u32 GetFrameObjectCount() const;
   u32 GetCurrentFrameNum() const { return m_CurrentFrame; }