giuliomoro@24: /*
giuliomoro@24:  * render.cpp
giuliomoro@24:  *
giuliomoro@24:  *  Created on: Oct 24, 2014
giuliomoro@24:  *      Author: parallels
giuliomoro@24:  */
giuliomoro@24: 
giuliomoro@24: #include "../../include/RTAudioSettings.h"
giuliomoro@24: #include "../../include/render.h"
giuliomoro@24: #include <cmath>
giuliomoro@24: #include "../../include/client.h"
giuliomoro@24: #include "../../include/RTAudio.h"	// to schedule lower prio parallel process
giuliomoro@24: #include <rtdk.h>
giuliomoro@41: #include <native/timer.h>
giuliomoro@41: #include "../../include/PRU.h"
giuliomoro@24: float gFrequency;
giuliomoro@24: float gPhase;
giuliomoro@24: float gInverseSampleRate;
giuliomoro@24: int gCount=0;
giuliomoro@24: networkData networkObject;
giuliomoro@41: networkAudio netAudio;
giuliomoro@41: extern PRU *gPRU;
giuliomoro@41: AuxiliaryTask printIntervalTask;
giuliomoro@41: AuxiliaryTask transmitReceiveAudioTask;
giuliomoro@41: void transmitReceiveData(){ //transmit and receive asynchronous messages
giuliomoro@41: //   	printf("transmitReceiveData auxiliary task has started\n");
giuliomoro@41: //	while(!gShouldStop){
giuliomoro@41: //		sendMessage(&networkObject);
giuliomoro@41: //		receiveMessage(networkObject);
giuliomoro@41: //		usleep(1000);
giuliomoro@41: //	}
giuliomoro@41: //	closeSockets();
giuliomoro@41: }
giuliomoro@24: 
giuliomoro@41: void transmitReceiveAudio(){ //transmit and receive audio buffers
giuliomoro@41: 	sendAudio(&netAudio);
giuliomoro@24: }
giuliomoro@24: 
giuliomoro@41: 
giuliomoro@24: // initialise_render() is called once before the audio rendering starts.
giuliomoro@24: // Use it to perform any initialisation and allocation which is dependent
giuliomoro@24: // on the period size or sample rate.
giuliomoro@24: //
giuliomoro@24: // userData holds an opaque pointer to a data structure that was passed
giuliomoro@24: // in from the call to initAudio().
giuliomoro@24: //
giuliomoro@24: // Return true on success; returning false halts the program.
giuliomoro@24: bool initialise_render(int numMatrixChannels, int numDigitalChannels, int numAudioChannels,
giuliomoro@24: 					   int numMatrixFramesPerPeriod,
giuliomoro@24: 					   int numAudioFramesPerPeriod,
giuliomoro@24: 					   float matrixSampleRate, float audioSampleRate,
giuliomoro@24: 					   void *userData, RTAudioSettings *settings)
giuliomoro@24: {
giuliomoro@24: 	// Retrieve a parameter passed in from the initAudio() call
giuliomoro@24: 	gFrequency = *(float *)userData;
giuliomoro@24: 
giuliomoro@24: 	gInverseSampleRate = 1.0 / audioSampleRate;
giuliomoro@24: 	gPhase = 0.0;
giuliomoro@24: 
giuliomoro@41: //	networkObject.counter=&gCount;
giuliomoro@41: //	networkObject.variables[0]=&gFrequency;
giuliomoro@41: //	networkObject.variables[1]=&gPhase;
giuliomoro@41: //	networkObject.numVariables=2;
giuliomoro@41: //	netAudio.doneOnTime=1;
giuliomoro@41: //	netAudio.index=0;
giuliomoro@41: //	netAudio.currentBuffer=0;
giuliomoro@41: //	setupSockets(settings->receivePort, settings->transmitPort, settings->serverName);
giuliomoro@41: ////	transmitReceiveDataTask=createAuxiliaryTaskLoop(*transmitReceiveData, 10, "transmit-receive-data");
giuliomoro@41: ////	scheduleAuxiliaryTask(transmitReceiveDataTask); //here it does not work
giuliomoro@41: //	transmitReceiveAudioTask=createAuxiliaryTaskLoop(*transmitReceiveAudio, 98, "transmit-receive-audio");
giuliomoro@24: 	return true;
giuliomoro@24: }
giuliomoro@24: 
giuliomoro@24: // render() is called regularly at the highest priority by the audio engine.
giuliomoro@24: // Input and output are given from the audio hardware and the other
giuliomoro@24: // ADCs and DACs (if available). If only audio is available, numMatrixFrames
giuliomoro@24: // will be 0.
giuliomoro@24: 
giuliomoro@24: void render(int numAnalogFrames, int numAudioFrames, int numDigitalFrames, float *audioIn, float *audioOut,
giuliomoro@24: 		float *analogIn, float *analogOut, uint32_t *digital)
giuliomoro@24: {
giuliomoro@24: 	for(int n = 0; n < numAudioFrames; n++) {
giuliomoro@24: 		float out = 0.7f * sinf(gPhase);
giuliomoro@41: 		float fake=0.1;
giuliomoro@41: 		for(int a=0; a<24; a++){
giuliomoro@41: 			fake = 0.7f * sinf(fake+out);
giuliomoro@41: 		}
giuliomoro@41: 		fake/=1000000000000000;
giuliomoro@24: 		gPhase += 2.0 * M_PI * gFrequency * gInverseSampleRate;
giuliomoro@24: 		if(gPhase > 2.0 * M_PI)
giuliomoro@24: 			gPhase -= 2.0 * M_PI;
giuliomoro@24: 
giuliomoro@41: //		for(int channel = 0; channel < gNumAudioChannels; channel++)
giuliomoro@41: //			audioOut[n * gNumAudioChannels + channel] = audioIn[n * gNumAudioChannels + 0]+audioIn[n * gNumAudioChannels + 1];
giuliomoro@41: 		audioOut[n * gNumAudioChannels] = fake*0.0000000001;
giuliomoro@41: 		audioOut[n * gNumAudioChannels+1]=out;
giuliomoro@41: 		if(0==gCount){
giuliomoro@41: //			scheduleAuxiliaryTask(transmitReceiveDataTask);
giuliomoro@24: 		}
giuliomoro@41: //		if(netAudio.index==(NETWORK_AUDIO_BUFFER_SIZE)){ // when the buffer is ready ...
giuliomoro@41: //			netAudio.index=0; //reset the counter
giuliomoro@41: //			if(netAudio.doneOnTime==0)
giuliomoro@41: //				rt_printf("Network buffer underrun :-{\n");
giuliomoro@41: //			netAudio.timestamp=gCount;
giuliomoro@41: //			netAudio.currentBuffer=!netAudio.currentBuffer; //switch buffer
giuliomoro@41: //			netAudio.doneOnTime=0;
giuliomoro@41: //			scheduleAuxiliaryTask(transmitReceiveAudioTask); //send the buffer
giuliomoro@41: //		}
giuliomoro@41: //		netAudio.buffers[netAudio.currentBuffer][netAudio.index++]=audioOut[n*gNumAudioChannels + 0];//copy channel 0 to the buffer
giuliomoro@24: 		gCount++;
giuliomoro@24: 	}
giuliomoro@24: }
giuliomoro@24: 
giuliomoro@24: // cleanup_render() is called once at the end, after the audio has stopped.
giuliomoro@24: // Release any resources that were allocated in initialise_render().
giuliomoro@24: 
giuliomoro@24: void cleanup_render()
giuliomoro@24: {
giuliomoro@41: //	closeSockets();
giuliomoro@24: }