1/*
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_DATA_PACKET_H
18#define _MTP_DATA_PACKET_H
19
20#include "MtpPacket.h"
21#include "mtp.h"
22
23struct usb_device;
24struct usb_request;
25
26namespace android {
27
28class MtpStringBuffer;
29
30class MtpDataPacket : public MtpPacket {
31private:
32    // current offset for get/put methods
33    int                 mOffset;
34
35public:
36                        MtpDataPacket();
37    virtual             ~MtpDataPacket();
38
39    virtual void        reset();
40
41    void                setOperationCode(MtpOperationCode code);
42    void                setTransactionID(MtpTransactionID id);
43
44    inline const uint8_t*     getData() const { return mBuffer + MTP_CONTAINER_HEADER_SIZE; }
45    inline uint8_t      getUInt8() { return (uint8_t)mBuffer[mOffset++]; }
46    inline int8_t       getInt8() { return (int8_t)mBuffer[mOffset++]; }
47    uint16_t            getUInt16();
48    inline int16_t      getInt16() { return (int16_t)getUInt16(); }
49    uint32_t            getUInt32();
50    inline int32_t      getInt32() { return (int32_t)getUInt32(); }
51    uint64_t            getUInt64();
52    inline int64_t      getInt64() { return (int64_t)getUInt64(); }
53    void                getUInt128(uint128_t& value);
54    inline void         getInt128(int128_t& value) { getUInt128((uint128_t&)value); }
55    void                getString(MtpStringBuffer& string);
56
57    Int8List*           getAInt8();
58    UInt8List*          getAUInt8();
59    Int16List*          getAInt16();
60    UInt16List*         getAUInt16();
61    Int32List*          getAInt32();
62    UInt32List*         getAUInt32();
63    Int64List*          getAInt64();
64    UInt64List*         getAUInt64();
65
66    void                putInt8(int8_t value);
67    void                putUInt8(uint8_t value);
68    void                putInt16(int16_t value);
69    void                putUInt16(uint16_t value);
70    void                putInt32(int32_t value);
71    void                putUInt32(uint32_t value);
72    void                putInt64(int64_t value);
73    void                putUInt64(uint64_t value);
74    void                putInt128(const int128_t& value);
75    void                putUInt128(const uint128_t& value);
76    void                putInt128(int64_t value);
77    void                putUInt128(uint64_t value);
78
79    void                putAInt8(const int8_t* values, int count);
80    void                putAUInt8(const uint8_t* values, int count);
81    void                putAInt16(const int16_t* values, int count);
82    void                putAUInt16(const uint16_t* values, int count);
83    void                putAUInt16(const UInt16List* values);
84    void                putAInt32(const int32_t* values, int count);
85    void                putAUInt32(const uint32_t* values, int count);
86    void                putAUInt32(const UInt32List* list);
87    void                putAInt64(const int64_t* values, int count);
88    void                putAUInt64(const uint64_t* values, int count);
89    void                putString(const MtpStringBuffer& string);
90    void                putString(const char* string);
91    void                putString(const uint16_t* string);
92    inline void         putEmptyString() { putUInt8(0); }
93    inline void         putEmptyArray() { putUInt32(0); }
94
95
96#ifdef MTP_DEVICE
97    // fill our buffer with data from the given file descriptor
98    int                 read(int fd);
99
100    // write our data to the given file descriptor
101    int                 write(int fd);
102    int                 writeData(int fd, void* data, uint32_t length);
103#endif
104
105#ifdef MTP_HOST
106    int                 read(struct usb_request *request);
107    int                 readData(struct usb_request *request, void* buffer, int length);
108    int                 readDataAsync(struct usb_request *req);
109    int                 readDataWait(struct usb_device *device);
110    int                 readDataHeader(struct usb_request *ep);
111
112    int                 writeDataHeader(struct usb_request *ep, uint32_t length);
113    int                 write(struct usb_request *ep);
114    int                 write(struct usb_request *ep, void* buffer, uint32_t length);
115#endif
116
117    inline bool         hasData() const { return mPacketSize > MTP_CONTAINER_HEADER_SIZE; }
118    inline uint32_t     getContainerLength() const { return MtpPacket::getUInt32(MTP_CONTAINER_LENGTH_OFFSET); }
119    void*               getData(int& outLength) const;
120};
121
122}; // namespace android
123
124#endif // _MTP_DATA_PACKET_H
125