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 "MtpTypes.h" 21 22 struct usb_request; 23 24 namespace android { 25 26 class MtpPacket { 27 28 protected: 29 uint8_t* mBuffer; 30 // current size of the buffer 31 int mBufferSize; 32 // number of bytes to add when resizing the buffer 33 int mAllocationIncrement; 34 // size of the data in the packet 35 int mPacketSize; 36 37 public: 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 44 void allocate(int length); 45 void dump(); 46 void copyFrom(const MtpPacket& src); 47 48 uint16_t getContainerCode() const; 49 void setContainerCode(uint16_t code); 50 51 uint16_t getContainerType() const; 52 53 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 60 int transfer(struct usb_request* request); 61 #endif 62 63 protected: 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 70 }; // namespace android 71 72 #endif // _MTP_PACKET_H 73