Rename NvController -> ControllerStream. Use a dedicated input thread rather than a thread pool for processing input. Batch analog axis updates and mouse moves.

2014-08-20 22:27:25 -07:00
parent 6556b3eb9b
commit c9eee2e075
4 changed files with 384 additions and 203 deletions
@@ -0,0 +1,87 @@
+package com.limelight.nvstream.input;
+
+public class ControllerBatchingBlock {
+	
+	private byte[] axisDirs = new byte[6];
+	
+	private short buttonFlags;
+	private byte leftTrigger;
+	private byte rightTrigger;
+	private short leftStickX;
+	private short leftStickY;
+	private short rightStickX;
+	private short rightStickY;
+	
+	public ControllerBatchingBlock(ControllerPacket initialPacket) {
+		this.buttonFlags = initialPacket.buttonFlags;
+		this.leftTrigger = initialPacket.leftTrigger;
+		this.rightTrigger = initialPacket.rightTrigger;
+		this.leftStickX = initialPacket.leftStickX;
+		this.leftStickY = initialPacket.leftStickY;
+		this.rightStickX = initialPacket.rightStickX;
+		this.rightStickY = initialPacket.rightStickY;
+	}
+	
+	private boolean checkDirs(short currentVal, short newVal, int dirIndex) {
+		if (currentVal == newVal) {
+			return true;
+		}
+		
+		// We want to send a packet if we've now zeroed an axis
+		if (newVal == 0) {
+			return false;
+		}
+		
+		if (axisDirs[dirIndex] == 0) {
+			if (newVal < currentVal) {
+				axisDirs[dirIndex] = -1;
+			}
+			else {
+				axisDirs[dirIndex] = 1;
+			}
+		}
+		else if (axisDirs[dirIndex] == -1) {
+			return newVal < currentVal;
+		}
+		else if (newVal < currentVal) {
+			return false;
+		}
+
+		return true;
+	}
+	
+	// Controller packet batching is far more restricted than mouse move batching.
+	// We have several restrictions that will cause batching to break up the controller packets.
+	// 1) Button flags must be the same for all packets in the batch
+	// 2) The movement direction of all axes must remain the same or be neutral
+	public boolean submitNewPacket(ControllerPacket packet) {
+		if (buttonFlags != packet.buttonFlags ||
+			!checkDirs(leftTrigger, packet.leftTrigger, 0) ||
+			!checkDirs(rightTrigger, packet.rightTrigger, 1) ||
+			!checkDirs(leftStickX, packet.leftStickX, 2) ||
+			!checkDirs(leftStickY, packet.leftStickY, 3) ||
+			!checkDirs(rightStickX, packet.rightStickX, 4) ||
+			!checkDirs(rightStickY, packet.rightStickY, 5))
+		{
+			return false;
+		}
+		
+		this.leftTrigger = packet.leftTrigger;
+		this.rightTrigger = packet.rightTrigger;
+		this.leftStickX = packet.leftStickX;
+		this.leftStickY = packet.leftStickY;
+		this.rightStickX = packet.rightStickX;
+		this.rightStickY = packet.rightStickY;
+		return true;
+	}
+	
+	public void reinitializePacket(ControllerPacket packet) {
+		packet.buttonFlags = buttonFlags;
+		packet.leftTrigger = leftTrigger;
+		packet.rightTrigger = rightTrigger;
+		packet.leftStickX = leftStickX;
+		packet.leftStickY = leftStickY;
+		packet.rightStickX = rightStickX;
+		packet.rightStickY = rightStickY;
+	}
+}