add mtp responder to TWRP.
Big thanks to Dees_Troy for helping with the implementation.

Change-Id: I6c9c522b9c9de5dc139e2ecb0141008182ba07f0
diff --git a/mtp/MtpEventPacket.cpp b/mtp/MtpEventPacket.cpp
new file mode 100755
index 0000000..1119f7d
--- /dev/null
+++ b/mtp/MtpEventPacket.cpp
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *	  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Copyright (C) 2014 TeamWin - bigbiff and Dees_Troy mtp database conversion to C++
+ */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+
+#ifdef MTP_DEVICE
+#include <linux/usb/f_mtp.h>
+#endif
+
+#include "MtpEventPacket.h"
+
+#include <usbhost/usbhost.h>
+
+
+MtpEventPacket::MtpEventPacket()
+	:	MtpPacket(512)
+{
+}
+
+MtpEventPacket::~MtpEventPacket() {
+}
+
+#ifdef MTP_DEVICE
+int MtpEventPacket::write(int fd) {
+	struct mtp_event	event;
+
+	putUInt32(MTP_CONTAINER_LENGTH_OFFSET, mPacketSize);
+	putUInt16(MTP_CONTAINER_TYPE_OFFSET, MTP_CONTAINER_TYPE_EVENT);
+
+	event.data = mBuffer;
+	event.length = mPacketSize;
+	int ret = ::ioctl(fd, MTP_SEND_EVENT, (unsigned long)&event);
+	return (ret < 0 ? ret : 0);
+}
+#endif
+
+#ifdef MTP_HOST
+int MtpEventPacket::read(struct usb_request *request) {
+	request->buffer = mBuffer;
+	request->buffer_length = mBufferSize;
+	int ret = transfer(request);
+	 if (ret >= 0)
+		mPacketSize = ret;
+	else
+		mPacketSize = 0;
+	return ret;
+}
+#endif
+
+