andrewm@13: /*
andrewm@13:  * render.cpp
andrewm@13:  *
andrewm@13:  *  Created on: Oct 24, 2014
andrewm@13:  *      Author: parallels
andrewm@13:  */
andrewm@13: 
andrewm@13: 
giuliomoro@301: #include <Bela.h>
andrewm@56: #include <Utilities.h>
andrewm@13: #include <rtdk.h>
andrewm@13: 
andrewm@56: // setup() is called once before the audio rendering starts.
andrewm@13: // Use it to perform any initialisation and allocation which is dependent
andrewm@13: // on the period size or sample rate.
andrewm@13: //
andrewm@13: // userData holds an opaque pointer to a data structure that was passed
andrewm@13: // in from the call to initAudio().
andrewm@13: //
andrewm@13: // Return true on success; returning false halts the program.
andrewm@13: 
giuliomoro@301: bool setup(BelaContext *context, void *userData)
andrewm@13: {
andrewm@13: 	// Nothing to do here...
andrewm@13: 	return true;
andrewm@13: }
andrewm@13: 
andrewm@13: // render() is called regularly at the highest priority by the audio engine.
andrewm@13: // Input and output are given from the audio hardware and the other
andrewm@13: // ADCs and DACs (if available). If only audio is available, numMatrixFrames
andrewm@13: // will be 0.
andrewm@13: 
giuliomoro@301: void render(BelaContext *context, void *userData)
andrewm@13: {
andrewm@13: 	// Simplest possible case: pass inputs through to outputs
andrewm@52: 	for(unsigned int n = 0; n < context->audioFrames; n++) {
giuliomoro@180: 		for(unsigned int ch = 0; ch < context->audioChannels; ch++){
giuliomoro@180: 			// Two equivalent ways to write this code
giuliomoro@180: 
giuliomoro@180: 			// The long way, using the buffers directly:
giuliomoro@180: 			// context->audioOut[n * context->audioChannels + ch] =
giuliomoro@180: 			// 		context->audioIn[n * context->audioChannels + ch];
giuliomoro@180: 
giuliomoro@180: 			// Or using the macros:
andrewm@308: 			audioWrite(context, n, ch, audioRead(context, n, ch));
giuliomoro@180: 		}
andrewm@13: 	}
andrewm@13: 
giuliomoro@180: 	// Same with analog channelss
giuliomoro@180: 	for(unsigned int n = 0; n < context->analogFrames; n++) {
giuliomoro@180: 		for(unsigned int ch = 0; ch < context->analogChannels; ch++) {
giuliomoro@180: 			// Two equivalent ways to write this code
giuliomoro@180: 
giuliomoro@180: 			// The long way, using the buffers directly:
giuliomoro@180: 			// context->analogOut[n * context->analogChannels + ch] = context->analogIn[n * context->analogChannels + ch];
giuliomoro@180: 
giuliomoro@180: 			// Or using the macros:
andrewm@308: 			analogWrite(context, n, ch, analogRead(context, n, ch));
giuliomoro@180: 		}
giuliomoro@180: 	}
andrewm@13: }
andrewm@13: 
andrewm@56: // cleanup() is called once at the end, after the audio has stopped.
andrewm@56: // Release any resources that were allocated in setup().
andrewm@13: 
giuliomoro@301: void cleanup(BelaContext *context, void *userData)
andrewm@13: {
andrewm@13: 
andrewm@13: }