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Mike Lockwood16864ba2010-05-11 17:16:59 -04001/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef _MTP_PACKET_H
18#define _MTP_PACKET_H
19
Mike Lockwood335dd2b2010-05-19 10:33:39 -040020#include "MtpTypes.h"
Mike Lockwood16864ba2010-05-11 17:16:59 -040021
Mike Lockwood42d0b792011-01-04 14:48:57 -050022struct usb_request;
Mike Lockwood7850ef92010-05-14 10:10:36 -040023
24namespace android {
25
Mike Lockwood16864ba2010-05-11 17:16:59 -040026class MtpPacket {
27
28protected:
29 uint8_t* mBuffer;
30 // current size of the buffer
Mike Lockwoodab063842014-11-12 14:20:06 -080031 size_t mBufferSize;
Mike Lockwood16864ba2010-05-11 17:16:59 -040032 // number of bytes to add when resizing the buffer
Mike Lockwoodab063842014-11-12 14:20:06 -080033 size_t mAllocationIncrement;
Mike Lockwood16864ba2010-05-11 17:16:59 -040034 // size of the data in the packet
Mike Lockwoodab063842014-11-12 14:20:06 -080035 size_t mPacketSize;
Mike Lockwood16864ba2010-05-11 17:16:59 -040036
37public:
38 MtpPacket(int bufferSize);
39 virtual ~MtpPacket();
40
41 // sets packet size to the default container size and sets buffer to zero
42 virtual void reset();
43
Mike Lockwoodab063842014-11-12 14:20:06 -080044 void allocate(size_t length);
Mike Lockwood16864ba2010-05-11 17:16:59 -040045 void dump();
Mike Lockwoodf7454622010-12-09 18:34:18 -080046 void copyFrom(const MtpPacket& src);
Mike Lockwood16864ba2010-05-11 17:16:59 -040047
48 uint16_t getContainerCode() const;
49 void setContainerCode(uint16_t code);
50
Mike Lockwoodf7454622010-12-09 18:34:18 -080051 uint16_t getContainerType() const;
52
Mike Lockwood16864ba2010-05-11 17:16:59 -040053 MtpTransactionID getTransactionID() const;
54 void setTransactionID(MtpTransactionID id);
55
56 uint32_t getParameter(int index) const;
57 void setParameter(int index, uint32_t value);
58
59#ifdef MTP_HOST
Mike Lockwood42d0b792011-01-04 14:48:57 -050060 int transfer(struct usb_request* request);
Mike Lockwood16864ba2010-05-11 17:16:59 -040061#endif
62
63protected:
64 uint16_t getUInt16(int offset) const;
65 uint32_t getUInt32(int offset) const;
66 void putUInt16(int offset, uint16_t value);
67 void putUInt32(int offset, uint32_t value);
68};
69
Mike Lockwood7850ef92010-05-14 10:10:36 -040070}; // namespace android
71
Mike Lockwood16864ba2010-05-11 17:16:59 -040072#endif // _MTP_PACKET_H