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_PACKET_H 18 #define _MTP_PACKET_H 19 20 #include <android-base/macros.h> 21 22 #include "MtpTypes.h" 23 24 struct usb_device; 25 struct usb_request; 26 27 namespace android { 28 29 class MtpPacket { 30 31 protected: 32 uint8_t* mBuffer; 33 // current size of the buffer 34 size_t mBufferSize; 35 // number of bytes to add when resizing the buffer 36 size_t mAllocationIncrement; 37 // size of the data in the packet 38 size_t mPacketSize; 39 40 public: 41 explicit MtpPacket(int bufferSize); 42 virtual ~MtpPacket(); 43 44 // sets packet size to the default container size and sets buffer to zero 45 virtual void reset(); 46 47 void allocate(size_t length); 48 void dump(); 49 void copyFrom(const MtpPacket& src); 50 51 uint16_t getContainerCode() const; 52 void setContainerCode(uint16_t code); 53 54 uint16_t getContainerType() const; 55 56 MtpTransactionID getTransactionID() const; 57 void setTransactionID(MtpTransactionID id); 58 59 uint32_t getParameter(int index) const; 60 void setParameter(int index, uint32_t value); 61 62 #ifdef MTP_HOST 63 int transfer(struct usb_request* request); 64 #endif 65 66 protected: 67 uint16_t getUInt16(int offset) const; 68 uint32_t getUInt32(int offset) const; 69 void putUInt16(int offset, uint16_t value); 70 void putUInt32(int offset, uint32_t value); 71 72 DISALLOW_COPY_AND_ASSIGN(MtpPacket); 73 }; 74 75 }; // namespace android 76 77 #endif // _MTP_PACKET_H 78
