Merged include-gpl into include and removed GPL dribble in About dialog

include/dsp/spectrumvis.h

@@ -0,0 +1,67 @@
+#ifndef INCLUDE_SPECTRUMVIS_H
+#define INCLUDE_SPECTRUMVIS_H
+
+#include "dsp/samplesink.h"
+#include "dsp/fftengine.h"
+#include "fftwindow.h"
+#include "util/export.h"
+#include "util/message.h"
+
+class GLSpectrum;
+class MessageQueue;
+
+class SDRANGEL_API SpectrumVis : public SampleSink {
+
+public:
+	class SDRANGEL_API MsgConfigureSpectrumVis : public Message {
+		MESSAGE_CLASS_DECLARATION
+
+	public:
+		MsgConfigureSpectrumVis(int fftSize, int overlapPercent, FFTWindow::Function window) :
+			Message(),
+			m_fftSize(fftSize),
+			m_overlapPercent(overlapPercent),
+			m_window(window)
+		{ }
+
+		int getFFTSize() const { return m_fftSize; }
+		int getOverlapPercent() const { return m_overlapPercent; }
+		FFTWindow::Function getWindow() const { return m_window; }
+
+	private:
+		int m_fftSize;
+		int m_overlapPercent;
+		FFTWindow::Function m_window;
+	};
+
+	SpectrumVis(GLSpectrum* glSpectrum = NULL);
+	virtual ~SpectrumVis();
+
+	void configure(MessageQueue* msgQueue, int fftSize, int overlapPercent, FFTWindow::Function window);
+
+	virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly);
+	void feedTriggered(const SampleVector::const_iterator& triggerPoint, const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly);
+	virtual void start();
+	virtual void stop();
+	virtual bool handleMessage(const Message& message);
+
+private:
+	FFTEngine* m_fft;
+	FFTWindow m_window;
+
+	std::vector<Complex> m_fftBuffer;
+	std::vector<Real> m_logPowerSpectrum;
+
+	std::size_t m_fftSize;
+	std::size_t m_overlapPercent;
+	std::size_t m_overlapSize;
+	std::size_t m_refillSize;
+	std::size_t m_fftBufferFill;
+	bool m_needMoreSamples;
+
+	GLSpectrum* m_glSpectrum;
+
+	void handleConfigure(int fftSize, int overlapPercent, FFTWindow::Function window);
+};
+
+#endif // INCLUDE_SPECTRUMVIS_H