comparison projects/basic_analog_output/render.cpp @ 52:a6d223473ea2 newapi

Updated examples for new API. tank_wars not yet updated; audio_in_FFT and oscillator_bank not working properly yet.

  *  Created on: Oct 24, 2014
  *      Author: parallels
  */
 
 
-#include "../../include/render.h"
+#include "../../include/BeagleRT.h"
 #include "../../include/Utilities.h"
 #include <rtdk.h>
 #include <cmath>
 
 // Set range for analog outputs designed for driving LEDs
-const float kMinimumAmplitude = (1.5 / 5.0) * MATRIX_MAX;
-const float kAmplitudeRange = MATRIX_MAX - kMinimumAmplitude;
+const float kMinimumAmplitude = (1.5 / 5.0);
+const float kAmplitudeRange = 1.0 - kMinimumAmplitude;
 
 float gFrequency;
 float gPhase;
 float gInverseSampleRate;
 

 // userData holds an opaque pointer to a data structure that was passed
 // in from the call to initAudio().
 //
 // Return true on success; returning false halts the program.
 
-bool initialise_render(int numMatrixChannels, int numAudioChannels,
-					   int numMatrixFramesPerPeriod,
-					   int numAudioFramesPerPeriod,
-					   float matrixSampleRate, float audioSampleRate,
-					   void *userData)
+bool initialise_render(BeagleRTContext *context, void *userData)
 {
 	// Retrieve a parameter passed in from the initAudio() call
 	gFrequency = *(float *)userData;
 
-	if(numMatrixFramesPerPeriod == 0) {
+	if(context->analogFrames == 0) {
 		rt_printf("Error: this example needs the matrix enabled\n");
 		return false;
 	}
 
-	gInverseSampleRate = 1.0 / matrixSampleRate;
+	gInverseSampleRate = 1.0 / context->analogSampleRate;
 	gPhase = 0.0;
 
 	return true;
 }
 
 // render() is called regularly at the highest priority by the audio engine.
 // Input and output are given from the audio hardware and the other
 // ADCs and DACs (if available). If only audio is available, numMatrixFrames
 // will be 0.
 
-void render(int numMatrixFrames, int numAudioFrames, float *audioIn, float *audioOut,
-			uint16_t *matrixIn, uint16_t *matrixOut)
+void render(BeagleRTContext *context, void *userData)
 {
-	for(int n = 0; n < numMatrixFrames; n++) {
+	for(int n = 0; n < context->analogFrames; n++) {
 		// Set LED to different phase for each matrix channel
 		float relativePhase = 0.0;
-		for(int channel = 0; channel < gNumMatrixChannels; channel++) {
+		for(int channel = 0; channel < context->analogChannels; channel++) {
 			float out = kMinimumAmplitude + kAmplitudeRange * 0.5f * (1.0f + sinf(gPhase + relativePhase));
-			if(out > MATRIX_MAX)
-				out = MATRIX_MAX;
 
-			analogWrite(channel, n, out);
+			analogWriteFrame(context, n, channel, out);
 
 			// Advance by pi/4 (1/8 of a full rotation) for each channel
 			relativePhase += M_PI * 0.25;
 		}
 

 }
 
 // cleanup_render() is called once at the end, after the audio has stopped.
 // Release any resources that were allocated in initialise_render().
 
-void cleanup_render()
+void cleanup_render(BeagleRTContext *context, void *userData)
 {
 
 }