create basic audio, towards sound sensors etc.

examples/TinyAudio/TinyAudioExample.cpp

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+#include "TinyAudioExample.h"
+#include "../CommonInterfaces/CommonRigidBodyBase.h"
+#include "RtAudio.h"
+#include "b3AudioListener.h"
+#include "b3SoundSource.h"
+
+class TinyAudioExample : public CommonExampleInterface
+{
+	b3AudioListener m_listener;
+	b3SoundSource m_soundA;
+	RtAudio m_dac;
+	GUIHelperInterface* m_guiHelper;
+	int m_soundIndexA;
+
+public:
+	TinyAudioExample(struct GUIHelperInterface* helper)
+		:m_guiHelper(helper)
+	{
+	}
+	
+	virtual ~TinyAudioExample()
+	{
+	}
+
+	virtual void initPhysics()
+	{
+		m_soundIndexA = m_listener.addSoundSource(&m_soundA);
+		RtAudioFormat format = ( sizeof(double) == 8 ) ? RTAUDIO_FLOAT64 : RTAUDIO_FLOAT32;
+		RtAudio::StreamParameters parameters;
+		parameters.deviceId = 1;// dac.getDefaultOutputDevice();
+		parameters.nChannels = 2;
+
+		// The default real-time audio input and output buffer size.  If
+		// clicks are occuring in the input and/or output sound stream, a
+		// larger buffer size may help.  Larger buffer sizes, however, produce
+		// more latency.
+		const unsigned int RT_BUFFER_SIZE = 512;
+
+		unsigned int bufferFrames = RT_BUFFER_SIZE;
+		int sampleRate = m_listener.getSampleRate();
+
+		m_dac.openStream( &parameters, NULL, format, (unsigned int)sampleRate, &bufferFrames, &b3AudioListener::tick,
+		(void *)m_listener.getTickData());
+
+		// Install an interrupt handler function.
+		//	(void) signal( SIGINT, finish );
+
+		m_dac.startStream();
+
+	}  
+	
+	virtual void exitPhysics()
+	{
+		m_dac.closeStream();
+		m_listener.removeSoundSource(m_soundIndexA);
+	}
+
+	virtual void renderScene()
+	{
+	}
+	
+	virtual void	stepSimulation(float deltaTime)
+	{
+	}
+
+	virtual void	physicsDebugDraw(int debugFlags)
+	{
+	}
+	virtual bool	mouseMoveCallback(float x,float y)
+	{
+		return false;
+	}
+	virtual bool	mouseButtonCallback(int button, int state, float x, float y)
+	{
+		return false;
+	}
+	virtual bool	keyboardCallback(int key, int state)
+	{
+		return false;
+	}
+
+	void resetCamera()
+	{
+		float dist = 4;
+		float pitch = 52;
+		float yaw = 35;
+		float targetPos[3]={0,0,0};
+		m_guiHelper->resetCamera(dist,pitch,yaw,targetPos[0],targetPos[1],targetPos[2]);
+	}
+
+};
+
+CommonExampleInterface*    TinyAudioExampleCreateFunc(CommonExampleOptions& options)
+{
+	return new TinyAudioExample(options.m_guiHelper);
+
+}
+
+
+B3_STANDALONE_EXAMPLE(TinyAudioExampleCreateFunc)