comparison projects/basic_passthru/render.cpp @ 13:6adb088196a7

Fixed ADC bug; added a simple passthrough test

+/*
+ * render.cpp
+ *
+ *  Created on: Oct 24, 2014
+ *      Author: parallels
+ */
+
+
+#include "../../include/render.h"
+#include "../../include/Utilities.h"
+#include <rtdk.h>
+
+// initialise_render() 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)
+{
+	// Nothing to do here...
+
+	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)
+{
+	// Simplest possible case: pass inputs through to outputs
+	for(int n = 0; n < numAudioFrames; n++) {
+		for(int ch = 0; ch < gNumAudioChannels; ch++)
+			audioOut[n * gNumAudioChannels + ch] = audioIn[n * gNumAudioChannels + ch];
+	}
+
+	// Same with matrix, only if matrix is enabled
+	if(numMatrixFrames != 0) {
+		for(int n = 0; n < numMatrixFrames; n++) {
+			for(int ch = 0; ch < gNumMatrixChannels; ch++) {
+				// Two equivalent ways to write this code
+				// The long way, using the buffers directly:
+				// matrixOut[n * gNumMatrixChannels + ch] = matrixIn[n * gNumMatrixChannels + ch];
+
+				// Or using the macros:
+				analogWrite(ch, n, analogRead(ch, n));
+			}
+		}
+	}
+}
+
+// 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()
+{
+
+}