/*
 * 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++
 */

#ifndef _MTP_DEVICE_H
#define _MTP_DEVICE_H

#include "MtpRequestPacket.h"
#include "MtpDataPacket.h"
#include "MtpResponsePacket.h"
#include "MtpTypes.h"

#include <utils/threads.h>

struct usb_device;
struct usb_request;
struct usb_endpoint_descriptor;


class MtpDeviceInfo;
class MtpObjectInfo;
class MtpStorageInfo;

class MtpDevice {
private:
	struct usb_device*		mDevice;
	int						mInterface;
	struct usb_request*		mRequestIn1;
	struct usb_request*		mRequestIn2;
	struct usb_request*		mRequestOut;
	struct usb_request*		mRequestIntr;
	MtpDeviceInfo*			mDeviceInfo;
	MtpPropertyList			mDeviceProperties;

	// current session ID
	MtpSessionID			mSessionID;
	// current transaction ID
	MtpTransactionID		mTransactionID;

	MtpRequestPacket		mRequest;
	MtpDataPacket			mData;
	MtpResponsePacket		mResponse;
	// set to true if we received a response packet instead of a data packet
	bool					mReceivedResponse;

	// to ensure only one MTP transaction at a time
	android::Mutex					 mMutex;

public:
							MtpDevice(struct usb_device* device, int interface,
									const struct usb_endpoint_descriptor *ep_in,
									const struct usb_endpoint_descriptor *ep_out,
									const struct usb_endpoint_descriptor *ep_intr);

	static MtpDevice*		open(const char* deviceName, int fd);

	virtual					~MtpDevice();

	void					initialize();
	void					close();
	void					print();
	const char*				getDeviceName();

	bool					openSession();
	bool					closeSession();

	MtpDeviceInfo*			getDeviceInfo();
	MtpStorageIDList*		getStorageIDs();
	MtpStorageInfo*			getStorageInfo(MtpStorageID storageID);
	MtpObjectHandleList*	getObjectHandles(MtpStorageID storageID, MtpObjectFormat format,
									MtpObjectHandle parent);
	MtpObjectInfo*			getObjectInfo(MtpObjectHandle handle);
	void*					getThumbnail(MtpObjectHandle handle, int& outLength);
	MtpObjectHandle			sendObjectInfo(MtpObjectInfo* info);
	bool					sendObject(MtpObjectInfo* info, int srcFD);
	bool					deleteObject(MtpObjectHandle handle);
	MtpObjectHandle			getParent(MtpObjectHandle handle);
	MtpObjectHandle			getStorageID(MtpObjectHandle handle);

	MtpObjectPropertyList*	getObjectPropsSupported(MtpObjectFormat format);

	MtpProperty*			getDevicePropDesc(MtpDeviceProperty code);
	MtpProperty*			getObjectPropDesc(MtpObjectProperty code, MtpObjectFormat format);

	bool					readObject(MtpObjectHandle handle,
									bool (* callback)(void* data, int offset,
											int length, void* clientData),
									int objectSize, void* clientData);
	bool					readObject(MtpObjectHandle handle, const char* destPath, int group,
									int perm);

private:
	bool					sendRequest(MtpOperationCode operation);
	bool					sendData();
	bool					readData();
	bool					writeDataHeader(MtpOperationCode operation, int dataLength);
	MtpResponseCode			readResponse();

};


#endif // _MTP_DEVICE_H