76 lines
3.2 KiB
C++
76 lines
3.2 KiB
C++
/*! \file pipacketextractor.h
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* \brief Packets extractor
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*/
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/*
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PIP - Platform Independent Primitives
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Packets extractor
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Copyright (C) 2013 Ivan Pelipenko peri4ko@gmail.com
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef PIPACKETEXTRACTOR_H
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#define PIPACKETEXTRACTOR_H
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#include "piiodevice.h"
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// Pass data, recHeaderPtr, received_data, recHeaderSize. Return true if packet is correct nor return false.
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typedef bool (*HeaderCheckFunc)(void * , uchar * , uchar * , int );
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class PIP_EXPORT PIPacketExtractor: public PIIODevice
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{
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public:
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PIPacketExtractor(PIIODevice * device_ = 0, void * recHeaderPtr = 0, int recHeaderSize = 0, int recDataSize = 0);
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virtual ~PIPacketExtractor() {}
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PIIODevice * device() {return dev;}
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void setDevice(PIIODevice * device_);
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int bufferSize() const {return buffer_size;}
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void setBufferSize(int new_size) {buffer_size = new_size; buffer.resize(buffer_size); sbuffer.resize(buffer_size); memset(buffer.data(), 0, buffer.size()); memset(sbuffer.data(), 0, sbuffer.size());}
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void setHeaderCheckSlot(HeaderCheckFunc f) {ret_func_header = f;}
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void setPacketData(void * recHeaderPtr, int recHeaderSize, int recDataSize) {headerPtr = recHeaderPtr; headerSize = recHeaderSize; dataSize = recDataSize; packetSize = headerSize + dataSize; if (headerSize > 0) mheader.resize(headerSize);}
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ullong missedBytes() const {return missed;}
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ullong missedPackets() const {if (packetSize == 0) return missed; return missed / packetSize;}
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const ullong * missedBytes_ptr() const {return &missed;}
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const ullong * missedPackets_ptr() const {return &missed_packets;}
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PIByteArray lastHeader() {return mheader;}
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int read(void * read_to, int max_size) {if (dev == 0) return -1; return dev->read(read_to, max_size);}
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int write(const void * data, int max_size) {if (dev == 0) return -1; return dev->write(data, max_size);}
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protected:
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virtual bool packetValidate(uchar * rec, int size) {if (ret_func_ != 0) return ret_func_(ret_data_, rec, size); return true;}
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virtual bool packetHeaderValidate(uchar * src, uchar * rec, int size) {if (ret_func_header != 0) return ret_func_header(ret_data_, src, rec, size); for (int i = 0; i < size; ++i) if (src[i] != rec[i]) return false; return true;}
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private:
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bool threadedRead(uchar * readed, int size);
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bool openDevice() {if (dev == 0) return false; return dev->open();}
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PIIODevice * dev;
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PIByteArray mheader, buffer, sbuffer;
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HeaderCheckFunc ret_func_header;
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void * headerPtr, * data;
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int buffer_size, dataSize, headerSize, packetSize, allReaded, addSize, curInd;
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ullong missed, missed_packets;
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};
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#endif // PIPACKETEXTRACTOR_H
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