comparison examples/basic_passthru/render.cpp @ 300:dbeed520b014 prerelease

Renamed projects to examples

+/*
+ * render.cpp
+ *
+ *  Created on: Oct 24, 2014
+ *      Author: parallels
+ */
+
+
+#include <BeagleRT.h>
+#include <Utilities.h>
+#include <rtdk.h>
+
+// 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 setup(BeagleRTContext *context, 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(BeagleRTContext *context, void *userData)
+{
+	// Simplest possible case: pass inputs through to outputs
+	for(unsigned int n = 0; n < context->audioFrames; n++) {
+		for(unsigned int ch = 0; ch < context->audioChannels; ch++){
+			// Two equivalent ways to write this code
+
+			// The long way, using the buffers directly:
+			// context->audioOut[n * context->audioChannels + ch] =
+			// 		context->audioIn[n * context->audioChannels + ch];
+
+			// Or using the macros:
+			audioWriteFrame(context, n, ch, audioReadFrame(context, n, ch));
+		}
+	}
+
+	// Same with analog channelss
+	for(unsigned int n = 0; n < context->analogFrames; n++) {
+		for(unsigned int ch = 0; ch < context->analogChannels; ch++) {
+			// Two equivalent ways to write this code
+
+			// The long way, using the buffers directly:
+			// context->analogOut[n * context->analogChannels + ch] = context->analogIn[n * context->analogChannels + ch];
+
+			// Or using the macros:
+			analogWriteFrame(context, n, ch, analogReadFrame(context, n, ch));
+		}
+	}
+}
+
+// cleanup() is called once at the end, after the audio has stopped.
+// Release any resources that were allocated in setup().
+
+void cleanup(BeagleRTContext *context, void *userData)
+{
+
+}