maximillian basic examples

1 files changed, 153 insertions, 0 deletions

diff --git a/player.cpp b/player.cpp
new file mode 100644
index 0000000..37edf80
--- /dev/null
+++ b/player.cpp
@@ -0,0 +1,153 @@
+/*
+ *  player.cpp
+ *  rtaudiotest
+ *
+ *  Created by Chris on 23/08/2011.
+ *  Copyright 2011 Goldsmiths Creative Computing. All rights reserved.
+ *
+ */
+
+#include "player.h"
+#include "maximilian.h"
+#include <iostream>
+
+
+#ifdef MAXIMILIAN_PORTAUDIO
+#include "portaudio.h"
+//#include "pa_mac_core.h"
+#elif defined(MAXIMILIAN_RT_AUDIO)
+#include "RtAudio.h"
+#endif
+
+
+void setup();//use this to do any initialisation if you want.
+
+void play(double *channels);//run dac! Very very often. Too often in fact. er...
+
+
+
+#ifdef MAXIMILIAN_PORTAUDIO
+int routing(const void *inputBuffer,
+		void *outputBuffer,
+		unsigned long nBufferFrames,
+		const PaStreamCallbackTimeInfo* timeInfo,
+		PaStreamCallbackFlags status,
+		void *userData ){
+#elif defined(MAXIMILIAN_RT_AUDIO)
+int routing	(void *outputBuffer, void *inputBuffer, unsigned int nBufferFrames,
+			 double streamTime, RtAudioStreamStatus status, void *userData ) {
+#endif
+	
+	unsigned int i, j;
+	
+#ifdef MAXIMILIAN_PORTAUDIO
+	float *buffer = (float *) outputBuffer;
+#elif defined(MAXIMILIAN_RT_AUDIO)
+	double *buffer = (double *) outputBuffer;
+#endif
+	double *lastValues = (double *) userData;
+	//	double currentTime = (double) streamTime; Might come in handy for control
+	if ( status )
+		std::cout << "Stream underflow detected!" << std::endl;
+	for ( i=0; i<nBufferFrames; i++ ) {	
+	}
+	// Write interleaved audio data.
+	for ( i=0; i<nBufferFrames; i++ ) {
+		play(lastValues);			
+		for ( j=0; j<maxiSettings::channels; j++ ) {
+			*buffer++=lastValues[0];
+		}
+	}
+	return 0;
+}
+
+//This is main()
+int main()
+{
+	setup();
+	
+#ifdef MAXIMILIAN_PORTAUDIO
+	PaStream *stream;
+	PaError err;
+	err = Pa_Initialize();
+	if( err != paNoError )
+		std::cout <<   "PortAudio error: " << Pa_GetErrorText( err ) << std::endl;
+	
+	double data[maxiSettings::channels];
+	
+	err = Pa_OpenDefaultStream( &stream,
+							   0,          /* no input channels */
+							   maxiSettings::channels,          /* stereo output */
+							   paFloat32,  /* 64 bit floating point output */
+							   maxiSettings::sampleRate,
+							   maxiSettings::bufferSize,        /* frames per buffer, i.e. the number
+												   of sample frames that PortAudio will
+												   request from the callback. Many apps
+												   may want to use
+												   paFramesPerBufferUnspecified, which
+												   tells PortAudio to pick the best,
+												   possibly changing, buffer size.*/
+							   &routing, /* this is your callback function */
+							   &data ); /*This is a pointer that will be passed to
+										 your callback*/
+	
+	//PaAlsa_EnableRealtimeScheduling(stream,true);
+	
+	err = Pa_StartStream( stream );
+	if( err != paNoError )
+		std::cout <<   "PortAudio error: " << Pa_GetErrorText( err ) << std::endl;
+	
+	
+	char input;
+	std::cout << "\nMaximilian is playing ... press <enter> to quit.\n";
+	std::cin.get( input );
+	
+	
+	
+	err = Pa_Terminate();
+	if( err != paNoError )
+		std::cout <<  "PortAudio error: "<< Pa_GetErrorText( err ) << std::endl;
+	
+#elif defined(MAXIMILIAN_RT_AUDIO)
+	RtAudio dac;
+	if ( dac.getDeviceCount() < 1 ) {
+		std::cout << "\nNo audio devices found!\n";
+		exit( 0 );
+	}
+	
+	RtAudio::StreamParameters parameters;
+	parameters.deviceId = dac.getDefaultOutputDevice();
+	parameters.nChannels = maxiSettings::channels;
+	parameters.firstChannel = 0;
+	unsigned int sampleRate = maxiSettings::sampleRate;
+	unsigned int bufferFrames = maxiSettings::bufferSize; 
+	double data[parameters.nChannels];
+	
+	try {
+		dac.openStream( &parameters, NULL, RTAUDIO_FLOAT64,
+					   sampleRate, &bufferFrames, &routing, (void *)&data);
+		
+		dac.startStream();
+	}
+	catch ( RtError& e ) {
+		e.printMessage();
+		exit( 0 );
+	}
+	
+	char input;
+	std::cout << "\nMaximilian is playing ... press <enter> to quit.\n";
+	std::cin.get( input );
+	
+	try {
+		// Stop the stream
+		dac.stopStream();
+	}
+	catch (RtError& e) {
+		e.printMessage();
+	}
+	
+	if ( dac.isStreamOpen() ) dac.closeStream();
+#endif
+	
+	return 0;
+}