From 50f8f78b8d1baa51c9eb6270954d469daddc4d61 Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Wed, 3 Sep 2014 22:52:48 -0700
Subject: [PATCH] Add support for vertical mouse scrolling

---
 .../com/limelight/nvstream/NvConnection.java  |  7 ++++
 .../nvstream/input/ControllerStream.java      |  5 +++
 .../nvstream/input/MouseScrollPacket.java     | 36 +++++++++++++++++++
 3 files changed, 48 insertions(+)
 create mode 100644 moonlight-common/src/com/limelight/nvstream/input/MouseScrollPacket.java

diff --git a/moonlight-common/src/com/limelight/nvstream/NvConnection.java b/moonlight-common/src/com/limelight/nvstream/NvConnection.java
index f60454d8..43acc4f6 100644
--- a/moonlight-common/src/com/limelight/nvstream/NvConnection.java
+++ b/moonlight-common/src/com/limelight/nvstream/NvConnection.java
@@ -335,4 +335,11 @@ public class NvConnection {
 		
 		inputStream.sendKeyboardInput(keyMap, keyDirection, modifier);
 	}
+	
+	public void sendMouseScroll(final byte scrollClicks) {
+		if (inputStream == null)
+			return;
+		
+		inputStream.sendMouseScroll(scrollClicks);
+	}
 }
diff --git a/moonlight-common/src/com/limelight/nvstream/input/ControllerStream.java b/moonlight-common/src/com/limelight/nvstream/input/ControllerStream.java
index 62850c78..a37f5759 100644
--- a/moonlight-common/src/com/limelight/nvstream/input/ControllerStream.java
+++ b/moonlight-common/src/com/limelight/nvstream/input/ControllerStream.java
@@ -282,4 +282,9 @@ public class ControllerStream {
 	{
 		queuePacket(new KeyboardPacket(keyMap, keyDirection, modifier));
 	}
+	
+	public void sendMouseScroll(byte scrollClicks)
+	{
+		queuePacket(new MouseScrollPacket(scrollClicks));
+	}
 }
diff --git a/moonlight-common/src/com/limelight/nvstream/input/MouseScrollPacket.java b/moonlight-common/src/com/limelight/nvstream/input/MouseScrollPacket.java
new file mode 100644
index 00000000..0b0218af
--- /dev/null
+++ b/moonlight-common/src/com/limelight/nvstream/input/MouseScrollPacket.java
@@ -0,0 +1,36 @@
+package com.limelight.nvstream.input;
+
+import java.nio.ByteBuffer;
+
+public class MouseScrollPacket extends InputPacket {
+	public static final int PACKET_TYPE = 0xa;
+	public static final int PAYLOAD_LENGTH = 10;
+	public static final int PACKET_LENGTH = PAYLOAD_LENGTH +
+		InputPacket.HEADER_LENGTH;
+	
+	short scroll;
+	
+	public MouseScrollPacket(byte scrollClicks)
+	{
+		super(PACKET_TYPE);
+		this.scroll = (short)(scrollClicks * 120);
+	}
+
+	@Override
+	public byte[] toWire() {
+		ByteBuffer bb = ByteBuffer.allocate(PACKET_LENGTH);
+		
+		bb.put(toWireHeader());
+		bb.put((byte) 0x09);
+		bb.put((byte) 0);
+		bb.put((byte) 0);
+		bb.put((byte) 0);
+		
+		bb.putShort(scroll);
+		bb.putShort(scroll);
+		
+		bb.putShort((short) 0);
+		
+		return bb.array();
+	}
+}