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