rtAudio example fix buffer order

(cherry picked from commit 91789094d0d023abd9068d1f66f9b05e3718eddf)

Author: danoli3

examples/sound/audioInputExample/src/ofApp.cpp

@@ -9,10 +9,9 @@ void ofApp::setup(){
 
 	soundStream.printDeviceList();
 
-	int bufferSize = 256;
+	int bufferSize = 512;
 
-	left.assign(bufferSize, 0.0);
-	right.assign(bufferSize, 0.0);
+	
 	volHistory.assign(400, 0.0);
 
 	bufferCounter	= 0;
@@ -28,14 +27,16 @@ void ofApp::setup(){
 	// settings.device = devices[4];
 
 	// you can also get devices for an specific api
-	// auto devices = soundStream.getDevicesByApi(ofSoundDevice::Api::PULSE);
+	// auto devices = soundStream.getDeviceList(ofSoundDevice::Api::PULSE);
 	// settings.device = devices[0];
 
 	// or get the default device for an specific api:
 	// settings.api = ofSoundDevice::Api::PULSE;
 
 	// or by name
+	
 	auto devices = soundStream.getMatchingDevices("default");
+
 	if(!devices.empty()){
 		settings.setInDevice(devices[0]);
 	}
@@ -51,6 +52,11 @@ void ofApp::setup(){
 	settings.bufferSize = bufferSize;
 	soundStream.setup(settings);
 
+	bufferSize = soundStream.getBufferSize();
+
+	left.assign(bufferSize, 0.0);
+	right.assign(bufferSize, 0.0);
+
 }
 
 //--------------------------------------------------------------
@@ -167,8 +173,8 @@ void ofApp::audioIn(ofSoundBuffer & input){
 
 	//lets go through each sample and calculate the root mean square which is a rough way to calculate volume	
 	for (size_t i = 0; i < input.getNumFrames(); i++){
-		left[i]		= input[i*2]*0.5;
-		right[i]	= input[i*2+1]*0.5;
+		left[i]		= input[i]*0.5;
+		right[i]	= input[i]*0.5;
 
 		curVol += left[i] * left[i];
 		curVol += right[i] * right[i];