Real time safe recording with ring buffer stage one

include/AudioDevice.h

@@ -84,6 +84,11 @@ class AudioDevice
 
 	virtual void stopProcessing();
 
+	virtual bool isProcessing()
+	{
+		return m_inProcess;
+	}
+
 protected:
 	// subclasses can re-implement this for being used in conjunction with
 	// processNextBuffer()

include/AudioEngine.h

@@ -41,6 +41,8 @@
 #include "AudioEngineProfiler.h"
 #include "PlayHandle.h"
 
+#include "LocklessRingBuffer.h"
+
 
 namespace lmms
 {
@@ -286,14 +288,16 @@ class LMMS_EXPORT AudioEngine : public QObject
 
 	void pushInputFrames( SampleFrame* _ab, const f_cnt_t _frames );
 
+	void processBufferedInputFrames();
+
 	inline const SampleFrame* inputBuffer()
 	{
-		return m_inputBuffer[ m_inputBufferRead ];
+		return m_inputBuffer[m_inputBufferRead].data();
 	}
 
 	inline f_cnt_t inputBufferFrames() const
 	{
-		return m_inputBufferFrames[ m_inputBufferRead ];
+		return m_inputBuffer[m_inputBufferRead].size();
 	}
 
 	inline const SampleFrame* nextBuffer()
@@ -371,9 +375,7 @@ class LMMS_EXPORT AudioEngine : public QObject
 
 	fpp_t m_framesPerPeriod;
 
-	SampleFrame* m_inputBuffer[2];
-	f_cnt_t m_inputBufferFrames[2];
-	f_cnt_t m_inputBufferSize[2];
+	std::array<std::vector<SampleFrame>, 2> m_inputBuffer;
 	sample_rate_t m_baseSampleRate;
 	int m_inputBufferRead;
 	int m_inputBufferWrite;
@@ -419,6 +421,9 @@ class LMMS_EXPORT AudioEngine : public QObject
 	friend class Engine;
 	friend class AudioEngineWorkerThread;
 	friend class ProjectRenderer;
+
+	std::unique_ptr<LocklessRingBuffer<SampleFrame>> m_inputAudioRingBuffer;
+	std::unique_ptr<LocklessRingBufferReader<SampleFrame>> m_inputAudioRingBufferReader;
 } ;
 
 } // namespace lmms