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/*
* 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.
*/
#ifndef _MTP_PACKET_H
#define _MTP_PACKET_H
#include <android-base/macros.h>
#include "MtpDebug.h"
#include "MtpTypes.h"
struct usb_device;
struct usb_request;
class MtpPacket {
protected:
uint8_t* mBuffer;
// current size of the buffer
size_t mBufferSize;
// number of bytes to add when resizing the buffer
size_t mAllocationIncrement;
// size of the data in the packet
size_t mPacketSize;
public:
explicit MtpPacket(int bufferSize);
virtual ~MtpPacket();
// sets packet size to the default container size and sets buffer to zero
virtual void reset();
void allocate(size_t length);
void dump();
void copyFrom(const MtpPacket& src);
uint16_t getContainerCode() const;
void setContainerCode(uint16_t code);
uint16_t getContainerType() const;
MtpTransactionID getTransactionID() const;
void setTransactionID(MtpTransactionID id);
uint32_t getParameter(int index) const;
void setParameter(int index, uint32_t value);
#ifdef MTP_HOST
int transfer(struct usb_request* request);
#endif
protected:
uint16_t getUInt16(int offset) const;
uint32_t getUInt32(int offset) const;
void putUInt16(int offset, uint16_t value);
void putUInt32(int offset, uint32_t value);
DISALLOW_COPY_AND_ASSIGN(MtpPacket);
};
#endif // _MTP_PACKET_H
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