comparison projects/audio_in_FFT/render.cpp @ 108:3068421c0737 ultra-staging

Merged default into ultra-staging

  *  Created on: Oct 24, 2014
  *      Author: parallels
  */
 
 
-#include "../../include/render.h"
+#include <BeagleRT.h>
 #include <rtdk.h>
 #include <NE10.h>					// neon library
 #include <cmath>
 
 int gFFTSize;

 ne10_fft_cpx_float32_t* timeDomainIn;
 ne10_fft_cpx_float32_t* timeDomainOut;
 ne10_fft_cpx_float32_t* frequencyDomain;
 ne10_fft_cfg_float32_t cfg;
 
-// initialise_render() is called once before the audio rendering starts.
+// setup() is called once before the audio rendering starts.
 // Use it to perform any initialisation and allocation which is dependent
 // on the period size or sample rate.
 //
 // 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 setup(BeagleRTContext *context, void *userData)
 {
 	// Retrieve a parameter passed in from the initAudio() call
 	gFFTSize = *(int *)userData;
 	gFFTScaleFactor = 1.0f / (float)gFFTSize;
 

 // 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 < numAudioFrames; n++) {
-		timeDomainIn[gReadPointer].r = (ne10_float32_t) ((audioIn[n*gNumAudioChannels] + audioIn[n*gNumAudioChannels+1]) * 0.5);
+	for(unsigned int n = 0; n < context->audioFrames; n++) {
+		timeDomainIn[gReadPointer].r = (ne10_float32_t) ((context->audioIn[n*context->audioChannels] +
+															context->audioIn[n*context->audioChannels+1]) * 0.5);
 		timeDomainIn[gReadPointer].i = 0;
 
 		if(++gReadPointer >= gFFTSize)
 		{
 			//FFT

 
 			gReadPointer = 0;
 			gWritePointer = 0;
 		}
 
-		for(int channel = 0; channel < gNumAudioChannels; channel++)
-			audioOut[n * gNumAudioChannels + channel] = (float) timeDomainOut[gWritePointer].r * gFFTScaleFactor;
+		for(unsigned int channel = 0; channel < context->audioChannels; channel++)
+			context->audioOut[n * context->audioChannels + channel] = (float) timeDomainOut[gWritePointer].r * gFFTScaleFactor;
 		gWritePointer++;
 	}
 }
 
-// cleanup_render() is called once at the end, after the audio has stopped.
-// Release any resources that were allocated in initialise_render().
+// cleanup() is called once at the end, after the audio has stopped.
+// Release any resources that were allocated in setup().
 
-void cleanup_render()
+void cleanup(BeagleRTContext *context, void *userData)
 {
 	NE10_FREE(timeDomainIn);
 	NE10_FREE(timeDomainOut);
 	NE10_FREE(frequencyDomain);
 	NE10_FREE(cfg);