comparison projects/tank_wars/render.cpp @ 56:3c3a1357657d newapi

Further API update to name three primary functions setup(), render() and cleanup(). Changed include paths so now can #include <BeagleRT.h>. Removed stale pru_rtaudio.bin file as this is now done as pru_rtaudio_bin.h. Updated examples to new API and fixed minor compiler warnings along the way. Network example needs further attention to compile.

  *  Created on: Oct 24, 2014
  *      Author: parallels
  */
 
 
-#include "../../include/RTAudio.h"
-#include "../../include/Utilities.h"
+#include <BeagleRT.h>
+#include <Utilities.h>
 #include "game.h"
 #include <rtdk.h>
 #include <cmath>
 #include <cstdlib>
 #include <time.h>

 float gSoundProjectileOscillatorGain = 0.2;
 float gOscillatorPhaseScaler = 0;
 
 void screen_update();
 
-// 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 numAnalogChannels, int numDigitalChannels, int numAudioChannels,
-					   int numAnalogFramesPerPeriod,
-					   int numAudioFramesPerPeriod,
-					   float analogSampleRate, float audioSampleRate,
-					   void *userData)
+bool setup(BeagleRTContext *context, void *userData)
 {
 	srandom(time(NULL));
 
 	// Verify we are running with matrix enabled
-	if(numAnalogFramesPerPeriod == 0 || numAnalogChannels < 4) {
+	if(context->analogFrames == 0 || context->analogChannels < 4) {
 		rt_printf("Error: this example needs the matrix enabled with at least 4 channels\n");
 		return false;
 	}
 
 	// Initialise audio variables
-	gAudioFramesPerMatrixFrame = numAudioFramesPerPeriod / numAnalogFramesPerPeriod;
-	gOscillatorPhaseScaler = 2.0 * M_PI / audioSampleRate;
+	gAudioFramesPerMatrixFrame = context->audioFrames / context->analogFrames;
+	gOscillatorPhaseScaler = 2.0 * M_PI / context->audioSampleRate;
 
 	// Initialise the screen buffers
-	gScreenBufferMaxLength = 2 * analogSampleRate / gScreenFramesPerSecond;
+	gScreenBufferMaxLength = 2 * context->analogSampleRate / gScreenFramesPerSecond;
 	gScreenBuffer1 = new float[gScreenBufferMaxLength];
 	gScreenBuffer2 = new float[gScreenBufferMaxLength];
 	if(gScreenBuffer1 == 0 || gScreenBuffer2 == 0) {
 		rt_printf("Error initialising screen buffers\n");
 		return false;

 	gScreenBufferNextUpdateLocation = 0;
 	gScreenNextBufferReady = false;
 
 	// Initialise the game
 	setupGame(gScreenWidth, gScreenHeight);
-	gGameFrameInterval = analogSampleRate / gGameFramesPerSecond;
+	gGameFrameInterval = context->analogSampleRate / gGameFramesPerSecond;
 	gSamplesUntilNextFrame = gGameFrameInterval;
 
 	// Initialise auxiliary tasks
-	if((gScreenUpdateTask = createAuxiliaryTaskLoop(&screen_update, 90,
-													"beaglert-screen-update")) == 0)
+	if((gScreenUpdateTask = BeagleRT_createAuxiliaryTask(&screen_update, 90,
+														 "beaglert-screen-update")) == 0)
 		return false;
 
 	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 numAnalogFrames, int numDigitalFrames, int numAudioFrames, float *audioIn, float *audioOut,
-			float *analogIn, float *analogOut, uint32_t *digital)
+void render(BeagleRTContext *context, void *userData)
 {
 	int audioIndex = 0;
 
-	for(int n = 0; n < numAnalogFrames; n++) {
+	for(unsigned int n = 0; n < context->analogFrames; n++) {
 		for(int k = 0; k < gAudioFramesPerMatrixFrame; k++) {
 			// Render music and sound
 			float audioSample = 0;
 
 			// Music plays in a loop

 						1.0, 0, 300, 2000), 200, 6000);
 				if(gSoundProjectileOscillatorPhase > 2.0 * M_PI)
 					gSoundProjectileOscillatorPhase -= 2.0 * M_PI;
 			}
 
-			audioOut[2*audioIndex] = audioOut[2*audioIndex + 1] = audioSample;
+			context->audioOut[2*audioIndex] = context->audioOut[2*audioIndex + 1] = audioSample;
 			audioIndex++;
 		}
 
 		// First-order lowpass filter to remove noise on launch FSR
-		float rawSample = AnalogRead(gInputLauncher, n);
+		float rawSample = analogReadFrame(context, n, gInputLauncher);
 		float launchSample = gLauncherFilterPole * gLauncherLastSample +
 							(1.0f - gLauncherFilterPole) * rawSample;
 		gLauncherLastSample = launchSample;
 
 		// Peak-detect on launch signal

 
 		if(--gSamplesUntilNextFrame <= 0) {
 			// Update game physics and cannon angles
 			gSamplesUntilNextFrame = gGameFrameInterval;
 
-			setTank1CannonAngle(map(AnalogRead(gInputTank1Angle, n),
+			setTank1CannonAngle(map(analogReadFrame(context, n, gInputTank1Angle),
 									0, 1.0, M_PI, 0));
-			setTank2CannonAngle(map(AnalogRead(gInputTank2Angle, n),
+			setTank2CannonAngle(map(analogReadFrame(context, n, gInputTank2Angle),
 									0, 1.0, M_PI, 0));
 			nextGameFrame();
 
 			// Check for collision and start sound accordingly
 			if(gameStatusCollisionOccurred()) {

 			float x = gScreenBufferRead[gScreenBufferReadPointer++];
 			float y = gScreenBufferRead[gScreenBufferReadPointer++];
 
 			// Rescale screen coordinates to matrix ranges; invert the Y
 			// coordinate to go from normal screen coordinates to scope coordinates
-			AnalogWriteFrame(gOutputX, n, constrain(map(x, 0, gScreenWidth, 0, 1.0), 0, 1.0));
-			AnalogWriteFrame(gOutputY, n, constrain(map(y, 0, gScreenHeight, 1.0, 0), 0, 1.0));
+			analogWriteFrameOnce(context, n, gOutputX, constrain(map(x, 0, gScreenWidth, 0, 1.0), 0, 1.0));
+			analogWriteFrameOnce(context, n, gOutputY, constrain(map(y, 0, gScreenHeight, 1.0, 0), 0, 1.0));
 		}
 		else {
 			// Still not ready! Write 0 until something happens
-			AnalogWriteFrame(gOutputX, n, 0);
-			AnalogWriteFrame(gOutputY, n, 0);
+			analogWriteFrameOnce(context, n, gOutputX, 0);
+			analogWriteFrameOnce(context, n, gOutputY, 0);
 		}
 
 		if(gameStatusWinner() != 0) {
 			// Blink one LED to show who won
 			// Blink both LEDs when projectile is in motion
 			float val = (gSampleCounter % 4000 > 2000) ? 1.0 : 0;
-			AnalogWriteFrame(gOutputPlayer1LED, n, gameStatusWinner() == 1 ? val : 0);
-			AnalogWriteFrame(gOutputPlayer2LED, n, gameStatusWinner() == 2 ? val : 0);
+			analogWriteFrameOnce(context, n, gOutputPlayer1LED, gameStatusWinner() == 1 ? val : 0);
+			analogWriteFrameOnce(context, n, gOutputPlayer2LED, gameStatusWinner() == 2 ? val : 0);
 
 			// After 5 seconds, restart the game
 			gSamplesSinceFinish++;
 			if(gSamplesSinceFinish > 22050*5)
 				gGameShouldRestart = true;
 		}
 		else if(gameStatusProjectileInMotion()) {
 			// Blink both LEDs when projectile is in motion
 			float val = (gSampleCounter % 2000 > 1000) ? 1.0 : 0;
-			AnalogWriteFrame(gOutputPlayer1LED, n, val);
-			AnalogWriteFrame(gOutputPlayer2LED, n, val);
+			analogWriteFrameOnce(context, n, gOutputPlayer1LED, val);
+			analogWriteFrameOnce(context, n, gOutputPlayer2LED, val);
 		}
 		else if(gameStatusPlayer1Turn()) {
-			AnalogWriteFrame(gOutputPlayer1LED, n, 1.0);
-			AnalogWriteFrame(gOutputPlayer2LED, n, 0);
+			analogWriteFrameOnce(context, n, gOutputPlayer1LED, 1.0);
+			analogWriteFrameOnce(context, n, gOutputPlayer2LED, 0);
 		}
 		else {
-			AnalogWriteFrame(gOutputPlayer2LED, n, 1.0);
-			AnalogWriteFrame(gOutputPlayer1LED, n, 0);
+			analogWriteFrameOnce(context, n, gOutputPlayer2LED, 1.0);
+			analogWriteFrameOnce(context, n, gOutputPlayer1LED, 0);
 		}
 
 		// Check if we have reached the point where we should next update
 		if(gScreenBufferReadPointer >= gScreenBufferNextUpdateLocation &&
 		   !gScreenNextBufferReady) {
 			// Update the screen at lower priority than the audio thread
-			scheduleAuxiliaryTask(gScreenUpdateTask);
+			BeagleRT_scheduleAuxiliaryTask(gScreenUpdateTask);
 		}
 
 		gSampleCounter++;
 	}
 }

 
 	// Flag it as ready to go
 	gScreenNextBufferReady = true;
 }
 
-// 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()
+// 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)
 {
 	// Clean up the game state
 	cleanupGame();
 }