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 "MtpDebug.h" 23 #include "MtpTypes.h" 24 25 struct usb_device; 26 struct usb_request; 27 28 namespace android { 29 30 class MtpPacket { 31 32 protected: 33 uint8_t* mBuffer; 34 // current size of the buffer 35 size_t mBufferSize; 36 // number of bytes to add when resizing the buffer 37 size_t mAllocationIncrement; 38 // size of the data in the packet 39 size_t mPacketSize; 40 41 public: 42 explicit MtpPacket(int bufferSize); 43 virtual ~MtpPacket(); 44 45 // sets packet size to the default container size and sets buffer to zero 46 virtual void reset(); 47 48 void allocate(size_t length); 49 void dump(); 50 void copyFrom(const MtpPacket& src); 51 52 uint16_t getContainerCode() const; 53 void setContainerCode(uint16_t code); 54 55 uint16_t getContainerType() const; 56 57 MtpTransactionID getTransactionID() const; 58 void setTransactionID(MtpTransactionID id); 59 60 uint32_t getParameter(int index) const; 61 void setParameter(int index, uint32_t value); 62 63 #ifdef MTP_HOST 64 int transfer(struct usb_request* request); 65 #endif 66 67 protected: 68 uint16_t getUInt16(int offset) const; 69 uint32_t getUInt32(int offset) const; 70 void putUInt16(int offset, uint16_t value); 71 void putUInt32(int offset, uint32_t value); 72 73 DISALLOW_COPY_AND_ASSIGN(MtpPacket); 74 }; 75 76 }; // namespace android 77 78 #endif // _MTP_PACKET_H 79
