add mtp responder to TWRP.

Big thanks to Dees_Troy for helping with the implementation.

Change-Id: I6c9c522b9c9de5dc139e2ecb0141008182ba07f0

mtp/mtp_MtpServer.cpp

@@ -0,0 +1,143 @@
+/*
+ * 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 <utils/Log.h>
+
+#include <stdio.h>
+#include <assert.h>
+#include <limits.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <vector>
+#include <utils/threads.h>
+
+#include "mtp_MtpServer.hpp"
+#include "MtpServer.h"
+#include "MtpStorage.h"
+#include "MtpDebug.h"
+
+#include <string>
+
+void twmtp_MtpServer::start()
+{
+	setup();
+	add_storage();
+	server->run();
+}
+
+void twmtp_MtpServer::set_storages(storages* mtpstorages) {
+	stores = mtpstorages;
+}
+
+void twmtp_MtpServer::setup()
+{
+	#define USB_MTP_DEVICE "/dev/mtp_usb"
+	usePtp =  false;
+	MyMtpDatabase* mtpdb = new MyMtpDatabase();
+#ifdef USB_MTP_DEVICE
+	int fd = open(USB_MTP_DEVICE, O_RDWR);
+#else
+	int fd = open("/dev/mtp_usb", O_RDWR);
+#endif
+	if (fd >= 0) {
+		MTPD("fd: %d\n", fd);
+		server = new MtpServer(fd, mtpdb, usePtp, 0, 0664, 0775);
+		refserver = server;
+		MTPI("created new mtpserver object\n");
+	} else {
+		MTPE("could not open MTP driver, errno: %d", errno);
+	}
+}
+
+void twmtp_MtpServer::run()
+{
+	MTPD("running in twmtp\n");
+	server->run();
+}
+
+void twmtp_MtpServer::cleanup()
+{
+	android::Mutex sMutex;
+	android::Mutex::Autolock autoLock(sMutex);
+
+	if (server) {
+		delete server;
+	} else {
+		MTPD("server is null in cleanup");
+	}
+}
+
+void twmtp_MtpServer::send_object_added(int handle)
+{
+	android::Mutex sMutex;
+	android::Mutex::Autolock autoLock(sMutex);
+
+	if (server)
+		server->sendObjectAdded(handle);
+	else
+		MTPD("server is null in send_object_added");
+}
+
+void twmtp_MtpServer::send_object_removed(int handle)
+{
+	android::Mutex sMutex;
+	android::Mutex::Autolock autoLock(sMutex);
+
+	if (server)
+		server->sendObjectRemoved(handle);
+	else
+		MTPD("server is null in send_object_removed");
+}
+
+void twmtp_MtpServer::add_storage()
+{
+	android::Mutex sMutex;
+	android::Mutex::Autolock autoLock(sMutex);
+
+	MTPI("adding internal storage\n");
+	for (unsigned int i = 0; i < stores->size(); ++i) {
+			std::string pathStr = stores->at(i)->mount;
+
+			if (!pathStr.empty()) {
+				std::string descriptionStr = stores->at(i)->display;
+				int storageID = stores->at(i)->mtpid;
+				long reserveSpace = 1;
+				bool removable = false;
+				long maxFileSize = 1000000000L;
+				if (descriptionStr != "") {
+					MtpStorage* storage = new MtpStorage(storageID, &pathStr[0], &descriptionStr[0], reserveSpace, removable, maxFileSize, refserver);
+					server->addStorage(storage);
+				}
+		}
+	}
+}
+
+void twmtp_MtpServer::remove_storage(int storageId)
+{
+	android::Mutex sMutex;
+	android::Mutex::Autolock autoLock(sMutex);
+
+	if (server) {
+		MtpStorage* storage = server->getStorage(storageId);
+		if (storage) {
+			server->removeStorage(storage);
+			delete storage;
+		}
+	} else
+		MTPD("server is null in remove_storage");
+}