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784 lines
69 KiB
C++
784 lines
69 KiB
C++
/// \file
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/// \brief This class allows you to write and read native types as a string of bits. BitStream is used extensively throughout RakNet and is designed to be used by users as well.
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///
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/// This file is part of RakNet Copyright 2003 Kevin Jenkins.
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///
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/// Usage of RakNet is subject to the appropriate license agreement.
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/// Creative Commons Licensees are subject to the
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/// license found at
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/// http://creativecommons.org/licenses/by-nc/2.5/
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/// Single application licensees are subject to the license found at
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/// http://www.jenkinssoftware.com/SingleApplicationLicense.html
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/// Custom license users are subject to the terms therein.
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/// GPL license users are subject to the GNU General Public
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/// License as published by the Free
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/// Software Foundation; either version 2 of the License, or (at your
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/// option) any later version.
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#if defined(_MSC_VER) && _MSC_VER < 1299 // VC6 doesn't support template specialization
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#ifndef __BITSTREAM_H
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#define __BITSTREAM_H
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#include "RakMemoryOverride.h"
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#include "RakNetDefines.h"
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#include "Export.h"
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#include "RakNetTypes.h"
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#include <assert.h>
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#if defined(_PS3)
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#include <math.h>
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#else
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#include <cmath>
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#endif
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#include <float.h>
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#ifdef _MSC_VER
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#pragma warning( push )
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#endif
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/// Arbitrary size, just picking something likely to be larger than most packets
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#define BITSTREAM_STACK_ALLOCATION_SIZE 256
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/// The namespace RakNet is not consistently used. It's only purpose is to avoid compiler errors for classes whose names are very common.
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/// For the most part I've tried to avoid this simply by using names very likely to be unique for my classes.
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namespace RakNet
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{
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/// This class allows you to write and read native types as a string of bits. BitStream is used extensively throughout RakNet and is designed to be used by users as well.
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/// \sa BitStreamSample.txt
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class RAK_DLL_EXPORT BitStream : public RakNet::RakMemoryOverride
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{
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public:
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/// Default Constructor
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BitStream();
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/// Create the bitstream, with some number of bytes to immediately allocate.
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/// There is no benefit to calling this, unless you know exactly how many bytes you need and it is greater than BITSTREAM_STACK_ALLOCATION_SIZE.
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/// In that case all it does is save you one or more realloc calls.
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/// \param[in] initialBytesToAllocate the number of bytes to pre-allocate.
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BitStream( int initialBytesToAllocate );
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/// Initialize the BitStream, immediately setting the data it contains to a predefined pointer.
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/// Set \a _copyData to true if you want to make an internal copy of the data you are passing. Set it to false to just save a pointer to the data.
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/// You shouldn't call Write functions with \a _copyData as false, as this will write to unallocated memory
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/// 99% of the time you will use this function to cast Packet::data to a bitstream for reading, in which case you should write something as follows:
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/// \code
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/// RakNet::BitStream bs(packet->data, packet->length, false);
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/// \endcode
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/// \param[in] _data An array of bytes.
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/// \param[in] lengthInBytes Size of the \a _data.
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/// \param[in] _copyData true or false to make a copy of \a _data or not.
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BitStream( unsigned char* _data, unsigned int lengthInBytes, bool _copyData );
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/// Destructor
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~BitStream();
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/// Resets the bitstream for reuse.
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void Reset( void );
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/// Bidirectional serialize/deserialize any integral type to/from a bitstream. Undefine __BITSTREAM_NATIVE_END if you need endian swapping.
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/// \param[in] writeToBitstream true to write from your data to this bitstream. False to read from this bitstream and write to your data
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/// \param[in] var The value to write
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/// \return true if \a writeToBitstream is true. true if \a writeToBitstream is false and the read was successful. false if \a writeToBitstream is false and the read was not successful.
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bool Serialize(bool writeToBitstream, bool &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, unsigned char &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, char &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, unsigned short &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, short &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, unsigned int &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, int &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, unsigned long &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, long &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, long long &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, unsigned long long &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, float &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, double &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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bool Serialize(bool writeToBitstream, long double &var){if (writeToBitstream)Write(var);else return Read(var); return true;}
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/// Bidirectional serialize/deserialize any integral type to/from a bitstream. If the current value is different from the last value
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/// the current value will be written. Otherwise, a single bit will be written
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/// \param[in] writeToBitstream true to write from your data to this bitstream. False to read from this bitstream and write to your data
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/// \param[in] currentValue The current value to write
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/// \param[in] lastValue The last value to compare against. Only used if \a writeToBitstream is true.
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/// \return true if \a writeToBitstream is true. true if \a writeToBitstream is false and the read was successful. false if \a writeToBitstream is false and the read was not successful.
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bool SerializeDelta(bool writeToBitstream, bool ¤tValue, bool lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, unsigned char ¤tValue, unsigned char lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, char ¤tValue, char lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, unsigned short ¤tValue, unsigned short lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, short ¤tValue, short lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, unsigned int ¤tValue, unsigned int lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, int ¤tValue, int lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, unsigned long ¤tValue, unsigned long lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, long long ¤tValue, long long lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, unsigned long long ¤tValue, unsigned long long lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, float ¤tValue, float lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, double ¤tValue, double lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, long double ¤tValue, long double lastValue){if (writeToBitstream) WriteDelta(currentValue, lastValue); else return ReadDelta(currentValue);return true;}
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/// Bidirectional version of SerializeDelta when you don't know what the last value is, or there is no last value.
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/// \param[in] writeToBitstream true to write from your data to this bitstream. False to read from this bitstream and write to your data
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/// \param[in] currentValue The current value to write
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/// \return true if \a writeToBitstream is true. true if \a writeToBitstream is false and the read was successful. false if \a writeToBitstream is false and the read was not successful.
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bool SerializeDelta(bool writeToBitstream, bool ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, unsigned char ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, char ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, unsigned short ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, short ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, unsigned int ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, int ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, unsigned long ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, long long ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, unsigned long long ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, float ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, double ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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bool SerializeDelta(bool writeToBitstream, long double ¤tValue){if (writeToBitstream) WriteDelta(currentValue); else return ReadDelta(currentValue);return true;}
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/// Bidirectional serialize/deserialize any integral type to/from a bitstream. Undefine __BITSTREAM_NATIVE_END if you need endian swapping.
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/// If you are not using __BITSTREAM_NATIVE_END the opposite is true for types larger than 1 byte
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/// For floating point, this is lossy, using 2 bytes for a float and 4 for a double. The range must be between -1 and +1.
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/// For non-floating point, this is lossless, but only has benefit if you use less than half the range of the type
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/// \param[in] writeToBitstream true to write from your data to this bitstream. False to read from this bitstream and write to your data
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/// \param[in] var The value to write
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/// \return true if \a writeToBitstream is true. true if \a writeToBitstream is false and the read was successful. false if \a writeToBitstream is false and the read was not successful.
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bool SerializeCompressed(bool writeToBitstream, bool &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, unsigned char &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, char &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, unsigned short &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, short &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, unsigned int &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, int &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, unsigned long &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, long &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, long long &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, unsigned long long &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, float &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, double &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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bool SerializeCompressed(bool writeToBitstream, long double &var){if (writeToBitstream)WriteCompressed(var);else return ReadCompressed(var); return true;}
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/// Bidirectional serialize/deserialize any integral type to/from a bitstream. If the current value is different from the last value
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/// the current value will be written. Otherwise, a single bit will be written
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/// For floating point, this is lossy, using 2 bytes for a float and 4 for a double. The range must be between -1 and +1.
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/// For non-floating point, this is lossless, but only has benefit if you use less than half the range of the type
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/// If you are not using __BITSTREAM_NATIVE_END the opposite is true for types larger than 1 byte
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/// \param[in] writeToBitstream true to write from your data to this bitstream. False to read from this bitstream and write to your data
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/// \param[in] currentValue The current value to write
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/// \param[in] lastValue The last value to compare against. Only used if \a writeToBitstream is true.
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/// \return true if \a writeToBitstream is true. true if \a writeToBitstream is false and the read was successful. false if \a writeToBitstream is false and the read was not successful.
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bool SerializeCompressedDelta(bool writeToBitstream, bool ¤tValue, bool lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, unsigned char ¤tValue, unsigned char lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, char ¤tValue, char lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, unsigned short ¤tValue, unsigned short lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, short ¤tValue, short lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, unsigned int ¤tValue, unsigned int lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, int ¤tValue, int lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, unsigned long ¤tValue, unsigned long lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, long long ¤tValue, long long lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, unsigned long long ¤tValue, unsigned long long lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, float ¤tValue, float lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, double ¤tValue, double lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, long double ¤tValue, long double lastValue){if (writeToBitstream) WriteCompressedDelta(currentValue, lastValue); else return ReadCompressedDelta(currentValue);return true;}
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/// Save as SerializeCompressedDelta(templateType ¤tValue, templateType lastValue) when we have an unknown second parameter
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bool SerializeCompressedDelta(bool writeToBitstream, bool &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, unsigned char &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, char &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, unsigned short &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, short &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, unsigned int &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, int &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, unsigned long &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, long &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, long long &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, unsigned long long &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, float &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, double &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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bool SerializeCompressedDelta(bool writeToBitstream, long double &var){if (writeToBitstream)WriteCompressedDelta(var);else return ReadCompressedDelta(var); return true;}
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/// Bidirectional serialize/deserialize an array or casted stream or raw data. This does NOT do endian swapping.
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/// \param[in] writeToBitstream true to write from your data to this bitstream. False to read from this bitstream and write to your data
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/// \param[in] input a byte buffer
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/// \param[in] numberOfBytes the size of \a input in bytes
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/// \return true if \a writeToBitstream is true. true if \a writeToBitstream is false and the read was successful. false if \a writeToBitstream is false and the read was not successful.
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bool Serialize(bool writeToBitstream, char* input, const int numberOfBytes );
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/// Bidirectional serialize/deserialize a normalized 3D vector, using (at most) 4 bytes + 3 bits instead of 12-24 bytes. Will further compress y or z axis aligned vectors.
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/// Accurate to 1/32767.5.
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/// \param[in] writeToBitstream true to write from your data to this bitstream. False to read from this bitstream and write to your data
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/// \param[in] x x
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/// \param[in] y y
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/// \param[in] z z
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/// \return true if \a writeToBitstream is true. true if \a writeToBitstream is false and the read was successful. false if \a writeToBitstream is false and the read was not successful.
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bool SerializeNormVector(bool writeToBitstream, float &x, float &y, float z ){if (writeToBitstream) WriteNormVector(x,y,z); else return ReadNormVector(x,y,z); return true;}
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bool SerializeNormVector(bool writeToBitstream, double &x, double &y, double &z ){if (writeToBitstream) WriteNormVector(x,y,z); else return ReadNormVector(x,y,z); return true;}
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/// Bidirectional serialize/deserialize a vector, using 10 bytes instead of 12.
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/// Loses accuracy to about 3/10ths and only saves 2 bytes, so only use if accuracy is not important.
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/// \param[in] writeToBitstream true to write from your data to this bitstream. False to read from this bitstream and write to your data
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/// \param[in] x x
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/// \param[in] y y
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/// \param[in] z z
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/// \return true if \a writeToBitstream is true. true if \a writeToBitstream is false and the read was successful. false if \a writeToBitstream is false and the read was not successful.
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bool SerializeVector(bool writeToBitstream, float &x, float &y, float &z ){if (writeToBitstream) WriteVector(x,y,z); else return ReadVector(x,y,z); return true;}
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bool SerializeVector(bool writeToBitstream, double &x, double &y, double &z ){if (writeToBitstream) WriteVector(x,y,z); else return ReadVector(x,y,z); return true;}
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/// Bidirectional serialize/deserialize a normalized quaternion in 6 bytes + 4 bits instead of 16 bytes. Slightly lossy.
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/// \param[in] writeToBitstream true to write from your data to this bitstream. False to read from this bitstream and write to your data
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/// \param[in] w w
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/// \param[in] x x
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/// \param[in] y y
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/// \param[in] z z
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/// \return true if \a writeToBitstream is true. true if \a writeToBitstream is false and the read was successful. false if \a writeToBitstream is false and the read was not successful.
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bool SerializeNormQuat(bool writeToBitstream, float &w, float &x, float &y, float &z){if (writeToBitstream) WriteNormQuat(w,x,y,z); else return ReadNormQuat(w,x,y,z); return true;}
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bool SerializeNormQuat(bool writeToBitstream, double &w, double &x, double &y, double &z){if (writeToBitstream) WriteNormQuat(w,x,y,z); else return ReadNormQuat(w,x,y,z); return true;}
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/// Bidirectional serialize/deserialize an orthogonal matrix by creating a quaternion, and writing 3 components of the quaternion in 2 bytes each
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/// for 6 bytes instead of 36
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/// Lossy, although the result is renormalized
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bool SerializeOrthMatrix(
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bool writeToBitstream,
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float &m00, float &m01, float &m02,
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float &m10, float &m11, float &m12,
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float &m20, float &m21, float &m22 ){if (writeToBitstream) WriteOrthMatrix(m00,m01,m02,m10,m11,m12,m20,m21,m22); else return ReadOrthMatrix(m00,m01,m02,m10,m11,m12,m20,m21,m22); return true;}
|
|
bool SerializeOrthMatrix(
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bool writeToBitstream,
|
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double &m00, double &m01, double &m02,
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double &m10, double &m11, double &m12,
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double &m20, double &m21, double &m22 ){if (writeToBitstream) WriteOrthMatrix(m00,m01,m02,m10,m11,m12,m20,m21,m22); else return ReadOrthMatrix(m00,m01,m02,m10,m11,m12,m20,m21,m22); return true;}
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/// Bidirectional serialize/deserialize numberToSerialize bits to/from the input. Right aligned
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/// data means in the case of a partial byte, the bits are aligned
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/// from the right (bit 0) rather than the left (as in the normal
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/// internal representation) You would set this to true when
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/// writing user data, and false when copying bitstream data, such
|
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/// as writing one bitstream to another
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/// \param[in] writeToBitstream true to write from your data to this bitstream. False to read from this bitstream and write to your data
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/// \param[in] input The data
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/// \param[in] numberOfBitsToSerialize The number of bits to write
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/// \param[in] rightAlignedBits if true data will be right aligned
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/// \return true if \a writeToBitstream is true. true if \a writeToBitstream is false and the read was successful. false if \a writeToBitstream is false and the read was not successful.
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bool SerializeBits(bool writeToBitstream, unsigned char* input, int numberOfBitsToSerialize, const bool rightAlignedBits = true );
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/// Write any integral type to a bitstream. Undefine __BITSTREAM_NATIVE_END if you need endian swapping.
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/// \param[in] var The value to write
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void Write(bool var){if ( var ) Write1(); else Write0();}
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void Write(unsigned char var){WriteBits( ( unsigned char* ) & var, sizeof( unsigned char ) * 8, true );}
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void Write(char var){WriteBits( ( unsigned char* ) & var, sizeof( char ) * 8, true );}
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void Write(unsigned short var) {if (DoEndianSwap()){unsigned char output[sizeof(unsigned short)]; ReverseBytes((unsigned char*)&var, output, sizeof(unsigned short)); WriteBits( ( unsigned char* ) output, sizeof(unsigned short) * 8, true );} WriteBits( ( unsigned char* ) & var, sizeof(unsigned short) * 8, true );}
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void Write(short var) {if (DoEndianSwap()){unsigned char output[sizeof(short)]; ReverseBytes((unsigned char*)&var, output, sizeof(short)); WriteBits( ( unsigned char* ) output, sizeof(short) * 8, true );} WriteBits( ( unsigned char* ) & var, sizeof(short) * 8, true );}
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void Write(unsigned int var) {if (DoEndianSwap()){unsigned char output[sizeof(unsigned int)]; ReverseBytes((unsigned char*)&var, output, sizeof(unsigned int)); WriteBits( ( unsigned char* ) output, sizeof(unsigned int) * 8, true );} WriteBits( ( unsigned char* ) & var, sizeof(unsigned int) * 8, true );}
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void Write(int var) {if (DoEndianSwap()){unsigned char output[sizeof(int)]; ReverseBytes((unsigned char*)&var, output, sizeof(int)); WriteBits( ( unsigned char* ) output, sizeof(int) * 8, true );} WriteBits( ( unsigned char* ) & var, sizeof(int) * 8, true );}
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void Write(unsigned long var) {if (DoEndianSwap()){unsigned char output[sizeof(unsigned long)]; ReverseBytes((unsigned char*)&var, output, sizeof(unsigned long)); WriteBits( ( unsigned char* ) output, sizeof(unsigned long) * 8, true );} WriteBits( ( unsigned char* ) & var, sizeof(unsigned long) * 8, true );}
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void Write(long var) {if (DoEndianSwap()){unsigned char output[sizeof(long)]; ReverseBytes((unsigned char*)&var, output, sizeof(long)); WriteBits( ( unsigned char* ) output, sizeof(long) * 8, true );} WriteBits( ( unsigned char* ) & var, sizeof(long) * 8, true );}
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void Write(long long var) {if (DoEndianSwap()){unsigned char output[sizeof(long long)]; ReverseBytes((unsigned char*)&var, output, sizeof(long long)); WriteBits( ( unsigned char* ) output, sizeof(long long) * 8, true );} WriteBits( ( unsigned char* ) & var, sizeof(long long) * 8, true );}
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void Write(unsigned long long var) {if (DoEndianSwap()){unsigned char output[sizeof(unsigned long long)]; ReverseBytes((unsigned char*)&var, output, sizeof(unsigned long long)); WriteBits( ( unsigned char* ) output, sizeof(unsigned long long) * 8, true );} WriteBits( ( unsigned char* ) & var, sizeof(unsigned long long) * 8, true );}
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void Write(float var) {if (DoEndianSwap()){unsigned char output[sizeof(float)]; ReverseBytes((unsigned char*)&var, output, sizeof(float)); WriteBits( ( unsigned char* ) output, sizeof(float) * 8, true );} WriteBits( ( unsigned char* ) & var, sizeof(float) * 8, true );}
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void Write(double var) {if (DoEndianSwap()){unsigned char output[sizeof(double)]; ReverseBytes((unsigned char*)&var, output, sizeof(double)); WriteBits( ( unsigned char* ) output, sizeof(double) * 8, true );} WriteBits( ( unsigned char* ) & var, sizeof(double) * 8, true );}
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void Write(long double var) {if (DoEndianSwap()){unsigned char output[sizeof(long double)]; ReverseBytes((unsigned char*)&var, output, sizeof(long double)); WriteBits( ( unsigned char* ) output, sizeof(long double) * 8, true );} WriteBits( ( unsigned char* ) & var, sizeof(long double) * 8, true );}
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void Write(void* var) {if (DoEndianSwap()){unsigned char output[sizeof(void*)]; ReverseBytes((unsigned char*)&var, output, sizeof(void*)); WriteBits( ( unsigned char* ) output, sizeof(void*) * 8, true );} WriteBits( ( unsigned char* ) & var, sizeof(void*) * 8, true );}
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void Write(SystemAddress var){WriteBits( ( unsigned char* ) & var.binaryAddress, sizeof(var.binaryAddress) * 8, true ); Write(var.port);}
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void Write(NetworkID var){if (NetworkID::IsPeerToPeerMode()) Write(var.systemAddress); Write(var.localSystemAddress);}
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/// Write any integral type to a bitstream. If the current value is different from the last value
|
|
/// the current value will be written. Otherwise, a single bit will be written
|
|
/// \param[in] currentValue The current value to write
|
|
/// \param[in] lastValue The last value to compare against
|
|
void WriteDelta(bool currentValue, bool lastValue){
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|
#pragma warning(disable:4100) // warning C4100: 'peer' : unreferenced formal parameter
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Write(currentValue);
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|
}
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void WriteDelta(unsigned char currentValue, unsigned char lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(char currentValue, char lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(unsigned short currentValue, unsigned short lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(short currentValue, short lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(unsigned int currentValue, unsigned int lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(int currentValue, int lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(unsigned long currentValue, unsigned long lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(long currentValue, long lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(long long currentValue, long long lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(unsigned long long currentValue, unsigned long long lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(float currentValue, float lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(double currentValue, double lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(long double currentValue, long double lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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|
void WriteDelta(SystemAddress currentValue, SystemAddress lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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void WriteDelta(NetworkID currentValue, NetworkID lastValue){if (currentValue==lastValue) {Write(false);} else {Write(true); Write(currentValue);}}
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|
|
|
/// WriteDelta when you don't know what the last value is, or there is no last value.
|
|
/// \param[in] currentValue The current value to write
|
|
void WriteDelta(bool var){Write(var);}
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|
void WriteDelta(unsigned char var){Write(true); Write(var);}
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void WriteDelta(char var){Write(true); Write(var);}
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void WriteDelta(unsigned short var){Write(true); Write(var);}
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|
void WriteDelta(short var){Write(true); Write(var);}
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void WriteDelta(unsigned int var){Write(true); Write(var);}
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void WriteDelta(int var){Write(true); Write(var);}
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void WriteDelta(unsigned long var){Write(true); Write(var);}
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|
void WriteDelta(long var){Write(true); Write(var);}
|
|
void WriteDelta(long long var){Write(true); Write(var);}
|
|
void WriteDelta(unsigned long long var){Write(true); Write(var);}
|
|
void WriteDelta(float var){Write(true); Write(var);}
|
|
void WriteDelta(double var){Write(true); Write(var);}
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|
void WriteDelta(long double var){Write(true); Write(var);}
|
|
void WriteDelta(SystemAddress var){Write(true); Write(var);}
|
|
void WriteDelta(NetworkID var){Write(true); Write(var);}
|
|
|
|
/// Write any integral type to a bitstream. Undefine __BITSTREAM_NATIVE_END if you need endian swapping.
|
|
/// If you are not using __BITSTREAM_NATIVE_END the opposite is true for types larger than 1 byte
|
|
/// For floating point, this is lossy, using 2 bytes for a float and 4 for a double. The range must be between -1 and +1.
|
|
/// For non-floating point, this is lossless, but only has benefit if you use less than half the range of the type
|
|
/// \param[in] var The value to write
|
|
void WriteCompressed(bool var) {Write(var);}
|
|
void WriteCompressed(unsigned char var) {WriteCompressed( ( unsigned char* ) & var, sizeof( unsigned char ) * 8, true );}
|
|
void WriteCompressed(char var) {WriteCompressed( (unsigned char* ) & var, sizeof( unsigned char ) * 8, true );}
|
|
void WriteCompressed(unsigned short var) {if (DoEndianSwap()) {unsigned char output[sizeof(unsigned short)]; ReverseBytes((unsigned char*)&var, output, sizeof(unsigned short)); WriteCompressed( ( unsigned char* ) output, sizeof(unsigned short) * 8, true );} else WriteCompressed( ( unsigned char* ) & var, sizeof(unsigned short) * 8, true );}
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|
void WriteCompressed(short var) {if (DoEndianSwap()) {unsigned char output[sizeof(short)]; ReverseBytes((unsigned char*)&var, output, sizeof(short)); WriteCompressed( ( unsigned char* ) output, sizeof(short) * 8, true );} else WriteCompressed( ( unsigned char* ) & var, sizeof(short) * 8, true );}
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|
void WriteCompressed(unsigned int var) {if (DoEndianSwap()) {unsigned char output[sizeof(unsigned int)]; ReverseBytes((unsigned char*)&var, output, sizeof(unsigned int)); WriteCompressed( ( unsigned char* ) output, sizeof(unsigned int) * 8, true );} else WriteCompressed( ( unsigned char* ) & var, sizeof(unsigned int) * 8, true );}
|
|
void WriteCompressed(int var) {if (DoEndianSwap()) { unsigned char output[sizeof(int)]; ReverseBytes((unsigned char*)&var, output, sizeof(int)); WriteCompressed( ( unsigned char* ) output, sizeof(int) * 8, true );} else WriteCompressed( ( unsigned char* ) & var, sizeof(int) * 8, true );}
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|
void WriteCompressed(unsigned long var) {if (DoEndianSwap()) {unsigned char output[sizeof(unsigned long)]; ReverseBytes((unsigned char*)&var, output, sizeof(unsigned long)); WriteCompressed( ( unsigned char* ) output, sizeof(unsigned long) * 8, true );} else WriteCompressed( ( unsigned char* ) & var, sizeof(unsigned long) * 8, true );}
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|
void WriteCompressed(long var) {if (DoEndianSwap()) {unsigned char output[sizeof(long)]; ReverseBytes((unsigned char*)&var, output, sizeof(long)); WriteCompressed( ( unsigned char* ) output, sizeof(long) * 8, true );} else WriteCompressed( ( unsigned char* ) & var, sizeof(long) * 8, true );}
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|
void WriteCompressed(long long var) {if (DoEndianSwap()) {unsigned char output[sizeof(long long)]; ReverseBytes((unsigned char*)&var, output, sizeof(long long)); WriteCompressed( ( unsigned char* ) output, sizeof(long long) * 8, true );} else WriteCompressed( ( unsigned char* ) & var, sizeof(long long) * 8, true );}
|
|
void WriteCompressed(unsigned long long var) {if (DoEndianSwap()) { unsigned char output[sizeof(unsigned long long)]; ReverseBytes((unsigned char*)&var, output, sizeof(unsigned long long)); WriteCompressed( ( unsigned char* ) output, sizeof(unsigned long long) * 8, true );} else WriteCompressed( ( unsigned char* ) & var, sizeof(unsigned long long) * 8, true );}
|
|
void WriteCompressed(float var) {assert(var > -1.01f && var < 1.01f); if (var < -1.0f) var=-1.0f; if (var > 1.0f) var=1.0f; Write((unsigned short)((var+1.0f)*32767.5f));}
|
|
void WriteCompressed(double var) {assert(var > -1.01 && var < 1.01); if (var < -1.0) var=-1.0; if (var > 1.0) var=1.0; Write((unsigned long)((var+1.0)*2147483648.0));}
|
|
void WriteCompressed(long double var) {assert(var > -1.01 && var < 1.01); if (var < -1.0) var=-1.0; if (var > 1.0) var=1.0; Write((unsigned long)((var+1.0)*2147483648.0));}
|
|
|
|
/// Write any integral type to a bitstream. If the current value is different from the last value
|
|
/// the current value will be written. Otherwise, a single bit will be written
|
|
/// For floating point, this is lossy, using 2 bytes for a float and 4 for a double. The range must be between -1 and +1.
|
|
/// For non-floating point, this is lossless, but only has benefit if you use less than half the range of the type
|
|
/// If you are not using __BITSTREAM_NATIVE_END the opposite is true for types larger than 1 byte
|
|
/// \param[in] currentValue The current value to write
|
|
/// \param[in] lastValue The last value to compare against
|
|
void WriteCompressedDelta(bool currentValue, bool lastValue)
|
|
{
|
|
#pragma warning(disable:4100) // warning C4100: 'peer' : unreferenced formal parameter
|
|
Write(currentValue);
|
|
}
|
|
void WriteCompressedDelta(unsigned char currentValue, unsigned char lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
void WriteCompressedDelta(char currentValue, char lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
void WriteCompressedDelta(unsigned short currentValue, unsigned short lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
void WriteCompressedDelta(short currentValue, short lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
void WriteCompressedDelta(unsigned int currentValue, unsigned int lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
void WriteCompressedDelta(int currentValue, int lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
void WriteCompressedDelta(unsigned long currentValue, unsigned long lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
void WriteCompressedDelta(long currentValue, long lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
void WriteCompressedDelta(long long currentValue, long long lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
void WriteCompressedDelta(unsigned long long currentValue, unsigned long long lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
void WriteCompressedDelta(float currentValue, float lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
void WriteCompressedDelta(double currentValue, double lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
void WriteCompressedDelta(long double currentValue, long double lastValue){if (currentValue==lastValue) {Write(false);} else { Write(true); WriteCompressed(currentValue);}}
|
|
|
|
/// Save as WriteCompressedDelta(templateType currentValue, templateType lastValue) when we have an unknown second parameter
|
|
void WriteCompressedDelta(bool var) {Write(var);}
|
|
void WriteCompressedDelta(unsigned char var) { Write(true); WriteCompressed(var); }
|
|
void WriteCompressedDelta(char var) { Write(true); WriteCompressed(var); }
|
|
void WriteCompressedDelta(unsigned short var) { Write(true); WriteCompressed(var); }
|
|
void WriteCompressedDelta(short var) { Write(true); WriteCompressed(var); }
|
|
void WriteCompressedDelta(unsigned int var) { Write(true); WriteCompressed(var); }
|
|
void WriteCompressedDelta(int var) { Write(true); WriteCompressed(var); }
|
|
void WriteCompressedDelta(unsigned long var) { Write(true); WriteCompressed(var); }
|
|
void WriteCompressedDelta(long var) { Write(true); WriteCompressed(var); }
|
|
void WriteCompressedDelta(long long var) { Write(true); WriteCompressed(var); }
|
|
void WriteCompressedDelta(unsigned long long var) { Write(true); WriteCompressed(var); }
|
|
void WriteCompressedDelta(float var) { Write(true); WriteCompressed(var); }
|
|
void WriteCompressedDelta(double var) { Write(true); WriteCompressed(var); }
|
|
void WriteCompressedDelta(long double var) { Write(true); WriteCompressed(var); }
|
|
|
|
/// Read any integral type from a bitstream. Define __BITSTREAM_NATIVE_END if you need endian swapping.
|
|
/// \param[in] var The value to read
|
|
bool Read(bool &var){if ( readOffset + 1 > numberOfBitsUsed ) return false;
|
|
if ( data[ readOffset >> 3 ] & ( 0x80 >> ( readOffset & 7 ) ) )
|
|
var = true;
|
|
else
|
|
var = false;
|
|
// Has to be on a different line for Mac
|
|
readOffset++;
|
|
return true;
|
|
}
|
|
bool Read(unsigned char &var) {return ReadBits( ( unsigned char* ) &var, sizeof(unsigned char) * 8, true );}
|
|
bool Read(char &var) {return ReadBits( ( unsigned char* ) &var, sizeof(char) * 8, true );}
|
|
bool Read(unsigned short &var) {if (DoEndianSwap()){unsigned char output[sizeof(unsigned short)]; if (ReadBits( ( unsigned char* ) output, sizeof(unsigned short) * 8, true )) { ReverseBytes(output, (unsigned char*)&var, sizeof(unsigned short)); return true;} return false;} else return ReadBits( ( unsigned char* ) & var, sizeof(unsigned short) * 8, true );}
|
|
bool Read(short &var) {if (DoEndianSwap()){unsigned char output[sizeof(short)]; if (ReadBits( ( unsigned char* ) output, sizeof(short) * 8, true )) { ReverseBytes(output, (unsigned char*)&var, sizeof(short)); return true;} return false;} else return ReadBits( ( unsigned char* ) & var, sizeof(short) * 8, true );}
|
|
bool Read(unsigned int &var) {if (DoEndianSwap()){unsigned char output[sizeof(unsigned int)]; if (ReadBits( ( unsigned char* ) output, sizeof(unsigned int) * 8, true )) { ReverseBytes(output, (unsigned char*)&var, sizeof(unsigned int)); return true;} return false;} else return ReadBits( ( unsigned char* ) & var, sizeof(unsigned int) * 8, true );}
|
|
bool Read(int &var) {if (DoEndianSwap()){unsigned char output[sizeof(int)]; if (ReadBits( ( unsigned char* ) output, sizeof(int) * 8, true )) { ReverseBytes(output, (unsigned char*)&var, sizeof(int)); return true;} return false;} else return ReadBits( ( unsigned char* ) & var, sizeof(int) * 8, true );}
|
|
bool Read(unsigned long &var) {if (DoEndianSwap()){unsigned char output[sizeof(unsigned long)]; if (ReadBits( ( unsigned char* ) output, sizeof(unsigned long) * 8, true )) { ReverseBytes(output, (unsigned char*)&var, sizeof(unsigned long)); return true;} return false;} else return ReadBits( ( unsigned char* ) & var, sizeof(unsigned long) * 8, true );}
|
|
bool Read(long &var) {if (DoEndianSwap()){unsigned char output[sizeof(long)]; if (ReadBits( ( unsigned char* ) output, sizeof(long) * 8, true )) { ReverseBytes(output, (unsigned char*)&var, sizeof(long)); return true;} return false;} else return ReadBits( ( unsigned char* ) & var, sizeof(long) * 8, true );}
|
|
bool Read(long long &var) {if (DoEndianSwap()){unsigned char output[sizeof(long long)]; if (ReadBits( ( unsigned char* ) output, sizeof(long long) * 8, true )) { ReverseBytes(output, (unsigned char*)&var, sizeof(long long)); return true;} return false;} else return ReadBits( ( unsigned char* ) & var, sizeof(long long) * 8, true );}
|
|
bool Read(unsigned long long &var) {if (DoEndianSwap()){unsigned char output[sizeof(unsigned long long)]; if (ReadBits( ( unsigned char* ) output, sizeof(unsigned long long) * 8, true )) { ReverseBytes(output, (unsigned char*)&var, sizeof(unsigned long long)); return true;} return false;} else return ReadBits( ( unsigned char* ) & var, sizeof(unsigned long long) * 8, true );}
|
|
bool Read(float &var) {if (DoEndianSwap()){unsigned char output[sizeof(float)]; if (ReadBits( ( unsigned char* ) output, sizeof(float) * 8, true )) { ReverseBytes(output, (unsigned char*)&var, sizeof(float)); return true;} return false;} else return ReadBits( ( unsigned char* ) & var, sizeof(float) * 8, true );}
|
|
bool Read(double &var) {if (DoEndianSwap()){unsigned char output[sizeof(double)]; if (ReadBits( ( unsigned char* ) output, sizeof(double) * 8, true )) { ReverseBytes(output, (unsigned char*)&var, sizeof(double)); return true;} return false;} else return ReadBits( ( unsigned char* ) & var, sizeof(double) * 8, true );}
|
|
bool Read(long double &var) {if (DoEndianSwap()){unsigned char output[sizeof(long double)]; if (ReadBits( ( unsigned char* ) output, sizeof(long double) * 8, true )) { ReverseBytes(output, (unsigned char*)&var, sizeof(long double)); return true;} return false;} else return ReadBits( ( unsigned char* ) & var, sizeof(long double) * 8, true );}
|
|
bool Read(void* &var) {if (DoEndianSwap()){unsigned char output[sizeof(void*)]; if (ReadBits( ( unsigned char* ) output, sizeof(void*) * 8, true )) { ReverseBytes(output, (unsigned char*)&var, sizeof(void*)); return true;} return false;} else return ReadBits( ( unsigned char* ) & var, sizeof(void*) * 8, true );}
|
|
bool Read(SystemAddress &var){ReadBits( ( unsigned char* ) & var.binaryAddress, sizeof(var.binaryAddress) * 8, true ); return Read(var.port);}
|
|
bool Read(NetworkID &var){if (NetworkID::IsPeerToPeerMode()) Read(var.systemAddress); return Read(var.localSystemAddress);}
|
|
|
|
/// Read any integral type from a bitstream. If the written value differed from the value compared against in the write function,
|
|
/// var will be updated. Otherwise it will retain the current value.
|
|
/// ReadDelta is only valid from a previous call to WriteDelta
|
|
/// \param[in] var The value to read
|
|
bool ReadDelta(bool &var) {return Read(var);}
|
|
bool ReadDelta(unsigned char &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(char &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(unsigned short &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(short &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(unsigned int &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(int &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(unsigned long &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(long &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(long long &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(unsigned long long &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(float &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(double &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(long double &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(SystemAddress &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
bool ReadDelta(NetworkID &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=Read(var); return success;}
|
|
|
|
|
|
/// Read any integral type from a bitstream. Undefine __BITSTREAM_NATIVE_END if you need endian swapping.
|
|
/// For floating point, this is lossy, using 2 bytes for a float and 4 for a double. The range must be between -1 and +1.
|
|
/// For non-floating point, this is lossless, but only has benefit if you use less than half the range of the type
|
|
/// If you are not using __BITSTREAM_NATIVE_END the opposite is true for types larger than 1 byte
|
|
/// \param[in] var The value to read
|
|
bool ReadCompressed(bool &var) {return Read(var);}
|
|
bool ReadCompressed(unsigned char &var) {return ReadCompressed( ( unsigned char* ) &var, sizeof(unsigned char) * 8, true );}
|
|
bool ReadCompressed(char &var) {return ReadCompressed( ( unsigned char* ) &var, sizeof(unsigned char) * 8, true );}
|
|
bool ReadCompressed(unsigned short &var){if (DoEndianSwap()){unsigned char output[sizeof(unsigned short)]; if (ReadCompressed( ( unsigned char* ) output, sizeof(unsigned short) * 8, true )){ReverseBytes(output, (unsigned char*)&var, sizeof(unsigned short)); return true;} return false;}else return ReadCompressed( ( unsigned char* ) & var, sizeof(unsigned short) * 8, true );}
|
|
bool ReadCompressed(short &var){if (DoEndianSwap()){unsigned char output[sizeof(short)]; if (ReadCompressed( ( unsigned char* ) output, sizeof(short) * 8, true )){ReverseBytes(output, (unsigned char*)&var, sizeof(short)); return true;} return false;}else return ReadCompressed( ( unsigned char* ) & var, sizeof(short) * 8, true );}
|
|
bool ReadCompressed(unsigned int &var){if (DoEndianSwap()){unsigned char output[sizeof(unsigned int)]; if (ReadCompressed( ( unsigned char* ) output, sizeof(unsigned int) * 8, true )){ReverseBytes(output, (unsigned char*)&var, sizeof(unsigned int)); return true;} return false;}else return ReadCompressed( ( unsigned char* ) & var, sizeof(unsigned int) * 8, true );}
|
|
bool ReadCompressed(int &var){if (DoEndianSwap()){unsigned char output[sizeof(int)]; if (ReadCompressed( ( unsigned char* ) output, sizeof(int) * 8, true )){ReverseBytes(output, (unsigned char*)&var, sizeof(int)); return true;} return false;}else return ReadCompressed( ( unsigned char* ) & var, sizeof(int) * 8, true );}
|
|
bool ReadCompressed(unsigned long &var){if (DoEndianSwap()){unsigned char output[sizeof(unsigned long)]; if (ReadCompressed( ( unsigned char* ) output, sizeof(unsigned long) * 8, true )){ReverseBytes(output, (unsigned char*)&var, sizeof(unsigned long)); return true;} return false;}else return ReadCompressed( ( unsigned char* ) & var, sizeof(unsigned long) * 8, true );}
|
|
bool ReadCompressed(long &var){if (DoEndianSwap()){unsigned char output[sizeof(long)]; if (ReadCompressed( ( unsigned char* ) output, sizeof(long) * 8, true )){ReverseBytes(output, (unsigned char*)&var, sizeof(long)); return true;} return false;}else return ReadCompressed( ( unsigned char* ) & var, sizeof(long) * 8, true );}
|
|
bool ReadCompressed(long long &var){if (DoEndianSwap()){unsigned char output[sizeof(long long)]; if (ReadCompressed( ( unsigned char* ) output, sizeof(long long) * 8, true )){ReverseBytes(output, (unsigned char*)&var, sizeof(long long)); return true;} return false;}else return ReadCompressed( ( unsigned char* ) & var, sizeof(long long) * 8, true );}
|
|
bool ReadCompressed(unsigned long long &var){if (DoEndianSwap()){unsigned char output[sizeof(unsigned long long)]; if (ReadCompressed( ( unsigned char* ) output, sizeof(unsigned long long) * 8, true )){ReverseBytes(output, (unsigned char*)&var, sizeof(unsigned long long)); return true;} return false;}else return ReadCompressed( ( unsigned char* ) & var, sizeof(unsigned long long) * 8, true );}
|
|
bool ReadCompressed(float &var){unsigned short compressedFloat; if (Read(compressedFloat)) { var = ((float)compressedFloat / 32767.5f - 1.0f); return true;} return false;}
|
|
bool ReadCompressed(double &var) {unsigned long compressedFloat; if (Read(compressedFloat)) { var = ((double)compressedFloat / 2147483648.0 - 1.0); return true; } return false;}
|
|
bool ReadCompressed(long double &var) {unsigned long compressedFloat; if (Read(compressedFloat)) { var = ((long double)compressedFloat / 2147483648.0 - 1.0); return true; } return false;}
|
|
bool ReadCompressed(SystemAddress &var) {return Read(var);}
|
|
bool ReadCompressed(NetworkID &var) {return Read(var);}
|
|
|
|
/// Read any integral type from a bitstream. If the written value differed from the value compared against in the write function,
|
|
/// var will be updated. Otherwise it will retain the current value.
|
|
/// the current value will be updated.
|
|
/// For floating point, this is lossy, using 2 bytes for a float and 4 for a double. The range must be between -1 and +1.
|
|
/// For non-floating point, this is lossless, but only has benefit if you use less than half the range of the type
|
|
/// If you are not using __BITSTREAM_NATIVE_END the opposite is true for types larger than 1 byte
|
|
/// ReadCompressedDelta is only valid from a previous call to WriteDelta
|
|
/// \param[in] var The value to read
|
|
bool ReadCompressedDelta(bool &var) {return Read(var);}
|
|
bool ReadCompressedDelta(unsigned char &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
bool ReadCompressedDelta(char &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
bool ReadCompressedDelta(unsigned short &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
bool ReadCompressedDelta(short &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
bool ReadCompressedDelta(unsigned int &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
bool ReadCompressedDelta(int &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
bool ReadCompressedDelta(unsigned long &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
bool ReadCompressedDelta(long &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
bool ReadCompressedDelta(long long &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
bool ReadCompressedDelta(unsigned long long &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
bool ReadCompressedDelta(float &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
bool ReadCompressedDelta(double &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
bool ReadCompressedDelta(long double &var){bool dataWritten; bool success; success=Read(dataWritten); if (dataWritten) success=ReadCompressed(var); return success;}
|
|
|
|
/// Write an array or casted stream or raw data. This does NOT do endian swapping.
|
|
/// \param[in] input a byte buffer
|
|
/// \param[in] numberOfBytes the size of \a input in bytes
|
|
void Write( const char* input, const int numberOfBytes );
|
|
|
|
/// Write one bitstream to another
|
|
/// \param[in] numberOfBits bits to write
|
|
/// \param bitStream the bitstream to copy from
|
|
void Write( BitStream *bitStream, int numberOfBits );
|
|
void Write( BitStream *bitStream );
|
|
|
|
/// Read a normalized 3D vector, using (at most) 4 bytes + 3 bits instead of 12-24 bytes. Will further compress y or z axis aligned vectors.
|
|
/// Accurate to 1/32767.5.
|
|
/// \param[in] x x
|
|
/// \param[in] y y
|
|
/// \param[in] z z
|
|
void WriteNormVector( float x, float y, float z );
|
|
void WriteNormVector( double x, double y, double z ) {WriteNormVector((float)x,(float)y,(float)z);}
|
|
|
|
/// Write a vector, using 10 bytes instead of 12.
|
|
/// Loses accuracy to about 3/10ths and only saves 2 bytes, so only use if accuracy is not important.
|
|
/// \param[in] x x
|
|
/// \param[in] y y
|
|
/// \param[in] z z
|
|
void WriteVector( float x, float y, float z );
|
|
void WriteVector( double x, double y, double z ) {WriteVector((float)x, (float)y, (float)z);}
|
|
|
|
/// Write a normalized quaternion in 6 bytes + 4 bits instead of 16 bytes. Slightly lossy.
|
|
/// \param[in] w w
|
|
/// \param[in] x x
|
|
/// \param[in] y y
|
|
/// \param[in] z z
|
|
void WriteNormQuat( float w, float x, float y, float z);
|
|
void WriteNormQuat( double w, double x, double y, double z) {WriteNormQuat((float)w, (float) x, (float) y, (float) z);}
|
|
|
|
/// Write an orthogonal matrix by creating a quaternion, and writing 3 components of the quaternion in 2 bytes each
|
|
/// for 6 bytes instead of 36
|
|
/// Lossy, although the result is renormalized
|
|
void WriteOrthMatrix(
|
|
float m00, float m01, float m02,
|
|
float m10, float m11, float m12,
|
|
float m20, float m21, float m22 )
|
|
{
|
|
WriteOrthMatrix((double)m00,(double)m01,(double)m02,
|
|
(double)m10,(double)m11,(double)m12,
|
|
(double)m20,(double)m21,(double)m22);
|
|
}
|
|
|
|
void WriteOrthMatrix(
|
|
double m00, double m01, double m02,
|
|
double m10, double m11, double m12,
|
|
double m20, double m21, double m22 );
|
|
|
|
/// Read an array or casted stream of byte. The array
|
|
/// is raw data. There is no automatic endian conversion with this function
|
|
/// \param[in] output The result byte array. It should be larger than @em numberOfBytes.
|
|
/// \param[in] numberOfBytes The number of byte to read
|
|
/// \return true on success false if there is some missing bytes.
|
|
bool Read( char* output, const int numberOfBytes );
|
|
|
|
/// Read a normalized 3D vector, using (at most) 4 bytes + 3 bits instead of 12-24 bytes. Will further compress y or z axis aligned vectors.
|
|
/// Accurate to 1/32767.5.
|
|
/// \param[in] x x
|
|
/// \param[in] y y
|
|
/// \param[in] z z
|
|
bool ReadNormVector( float &x, float &y, float &z );
|
|
bool ReadNormVector( double &x, double &y, double &z ) {float fx, fy, fz; bool b = ReadNormVector(fx, fy, fz); x=fx; y=fy; z=fz; return b;}
|
|
|
|
/// Read 3 floats or doubles, using 10 bytes, where those float or doubles comprise a vector
|
|
/// Loses accuracy to about 3/10ths and only saves 2 bytes, so only use if accuracy is not important.
|
|
/// \param[in] x x
|
|
/// \param[in] y y
|
|
/// \param[in] z z
|
|
bool ReadVector( float x, float y, float z );
|
|
bool ReadVector( double &x, double &y, double &z ) {return ReadVector((float)x, (float)y, (float)z);}
|
|
|
|
/// Read a normalized quaternion in 6 bytes + 4 bits instead of 16 bytes.
|
|
/// \param[in] w w
|
|
/// \param[in] x x
|
|
/// \param[in] y y
|
|
/// \param[in] z z
|
|
bool ReadNormQuat( float &w, float &x, float &y, float &z){double dw, dx, dy, dz; bool b=ReadNormQuat(dw, dx, dy, dz); w=(float)dw; x=(float)dx; y=(float)dy; z=(float)dz; return b;}
|
|
bool ReadNormQuat( double &w, double &x, double &y, double &z);
|
|
|
|
/// Read an orthogonal matrix from a quaternion, reading 3 components of the quaternion in 2 bytes each and extrapolating the 4th.
|
|
/// for 6 bytes instead of 36
|
|
/// Lossy, although the result is renormalized
|
|
bool ReadOrthMatrix(
|
|
float &m00, float &m01, float &m02,
|
|
float &m10, float &m11, float &m12,
|
|
float &m20, float &m21, float &m22 );
|
|
bool ReadOrthMatrix(
|
|
double &m00, double &m01, double &m02,
|
|
double &m10, double &m11, double &m12,
|
|
double &m20, double &m21, double &m22 );
|
|
|
|
///Sets the read pointer back to the beginning of your data.
|
|
void ResetReadPointer( void );
|
|
|
|
/// Sets the write pointer back to the beginning of your data.
|
|
void ResetWritePointer( void );
|
|
|
|
///This is good to call when you are done with the stream to make
|
|
/// sure you didn't leave any data left over void
|
|
void AssertStreamEmpty( void );
|
|
|
|
/// printf the bits in the stream. Great for debugging.
|
|
void PrintBits( void ) const;
|
|
|
|
/// Ignore data we don't intend to read
|
|
/// \param[in] numberOfBits The number of bits to ignore
|
|
void IgnoreBits( const int numberOfBits );
|
|
|
|
/// Ignore data we don't intend to read
|
|
/// \param[in] numberOfBits The number of bytes to ignore
|
|
void IgnoreBytes( const int numberOfBytes );
|
|
|
|
///Move the write pointer to a position on the array.
|
|
/// \param[in] offset the offset from the start of the array.
|
|
/// \attention
|
|
/// Dangerous if you don't know what you are doing!
|
|
/// For efficiency reasons you can only write mid-stream if your data is byte aligned.
|
|
void SetWriteOffset( const int offset );
|
|
|
|
/// Returns the length in bits of the stream
|
|
inline int GetNumberOfBitsUsed( void ) const {return GetWriteOffset();}
|
|
inline int GetWriteOffset( void ) const {return numberOfBitsUsed;}
|
|
|
|
///Returns the length in bytes of the stream
|
|
inline int GetNumberOfBytesUsed( void ) const {return BITS_TO_BYTES( numberOfBitsUsed );}
|
|
|
|
///Returns the number of bits into the stream that we have read
|
|
inline int GetReadOffset( void ) const {return readOffset;}
|
|
|
|
// Sets the read bit index
|
|
inline void SetReadOffset( int newReadOffset ) {readOffset=newReadOffset;}
|
|
|
|
///Returns the number of bits left in the stream that haven't been read
|
|
inline int GetNumberOfUnreadBits( void ) const {return numberOfBitsUsed - readOffset;}
|
|
|
|
/// Makes a copy of the internal data for you \a _data will point to
|
|
/// the stream. Returns the length in bits of the stream. Partial
|
|
/// bytes are left aligned
|
|
/// \param[out] _data The allocated copy of GetData()
|
|
int CopyData( unsigned char** _data ) const;
|
|
|
|
/// Set the stream to some initial data.
|
|
/// \internal
|
|
void SetData( unsigned char *input );
|
|
|
|
/// Gets the data that BitStream is writing to / reading from
|
|
/// Partial bytes are left aligned.
|
|
/// \return A pointer to the internal state
|
|
inline unsigned char* GetData( void ) const {return data;}
|
|
|
|
/// Write numberToWrite bits from the input source Right aligned
|
|
/// data means in the case of a partial byte, the bits are aligned
|
|
/// from the right (bit 0) rather than the left (as in the normal
|
|
/// internal representation) You would set this to true when
|
|
/// writing user data, and false when copying bitstream data, such
|
|
/// as writing one bitstream to another
|
|
/// \param[in] input The data
|
|
/// \param[in] numberOfBitsToWrite The number of bits to write
|
|
/// \param[in] rightAlignedBits if true data will be right aligned
|
|
void WriteBits( const unsigned char* input, int numberOfBitsToWrite, const bool rightAlignedBits = true );
|
|
|
|
/// Align the bitstream to the byte boundary and then write the
|
|
/// specified number of bits. This is faster than WriteBits but
|
|
/// wastes the bits to do the alignment and requires you to call
|
|
/// ReadAlignedBits at the corresponding read position.
|
|
/// \param[in] input The data
|
|
/// \param[in] numberOfBytesToWrite The size of input.
|
|
void WriteAlignedBytes( void *input, const int numberOfBytesToWrite );
|
|
|
|
/// Aligns the bitstream, writes inputLength, and writes input. Won't write beyond maxBytesToWrite
|
|
/// \param[in] input The data
|
|
/// \param[in] inputLength The size of input.
|
|
/// \param[in] maxBytesToWrite Max bytes to write
|
|
void WriteAlignedBytesSafe( void *input, const int inputLength, const int maxBytesToWrite );
|
|
|
|
/// Read bits, starting at the next aligned bits. Note that the
|
|
/// modulus 8 starting offset of the sequence must be the same as
|
|
/// was used with WriteBits. This will be a problem with packet
|
|
/// coalescence unless you byte align the coalesced packets.
|
|
/// \param[in] output The byte array larger than @em numberOfBytesToRead
|
|
/// \param[in] numberOfBytesToRead The number of byte to read from the internal state
|
|
/// \return true if there is enough byte.
|
|
bool ReadAlignedBytes( void *output, const int numberOfBytesToRead );
|
|
|
|
/// Reads what was written by WriteAlignedBytesSafe
|
|
/// \param[in] input The data
|
|
/// \param[in] maxBytesToRead Maximum number of bytes to read
|
|
bool ReadAlignedBytesSafe( void *input, int &inputLength, const int maxBytesToRead );
|
|
|
|
/// Same as ReadAlignedBytesSafe() but allocates the memory for you using new, rather than assuming it is safe to write to
|
|
/// \param[in] input input will be deleted if it is not a pointer to 0
|
|
bool ReadAlignedBytesSafeAlloc( char **input, int &inputLength, const int maxBytesToRead );
|
|
|
|
/// Align the next write and/or read to a byte boundary. This can
|
|
/// be used to 'waste' bits to byte align for efficiency reasons It
|
|
/// can also be used to force coalesced bitstreams to start on byte
|
|
/// boundaries so so WriteAlignedBits and ReadAlignedBits both
|
|
/// calculate the same offset when aligning.
|
|
void AlignWriteToByteBoundary( void );
|
|
|
|
/// Align the next write and/or read to a byte boundary. This can
|
|
/// be used to 'waste' bits to byte align for efficiency reasons It
|
|
/// can also be used to force coalesced bitstreams to start on byte
|
|
/// boundaries so so WriteAlignedBits and ReadAlignedBits both
|
|
/// calculate the same offset when aligning.
|
|
void AlignReadToByteBoundary( void );
|
|
|
|
/// Read \a numberOfBitsToRead bits to the output source
|
|
/// alignBitsToRight should be set to true to convert internal
|
|
/// bitstream data to userdata. It should be false if you used
|
|
/// WriteBits with rightAlignedBits false
|
|
/// \param[in] output The resulting bits array
|
|
/// \param[in] numberOfBitsToRead The number of bits to read
|
|
/// \param[in] alignBitsToRight if true bits will be right aligned.
|
|
/// \return true if there is enough bits to read
|
|
bool ReadBits( unsigned char *output, int numberOfBitsToRead, const bool alignBitsToRight = true );
|
|
|
|
/// Write a 0
|
|
void Write0( void );
|
|
|
|
/// Write a 1
|
|
void Write1( void );
|
|
|
|
/// Reads 1 bit and returns true if that bit is 1 and false if it is 0
|
|
bool ReadBit( void );
|
|
|
|
/// If we used the constructor version with copy data off, this
|
|
/// *makes sure it is set to on and the data pointed to is copied.
|
|
void AssertCopyData( void );
|
|
|
|
/// Use this if you pass a pointer copy to the constructor
|
|
/// *(_copyData==false) and want to overallocate to prevent
|
|
/// *reallocation
|
|
void SetNumberOfBitsAllocated( const unsigned int lengthInBits );
|
|
|
|
/// Reallocates (if necessary) in preparation of writing numberOfBitsToWrite
|
|
void AddBitsAndReallocate( const int numberOfBitsToWrite );
|
|
|
|
/// \internal
|
|
/// \return How many bits have been allocated internally
|
|
unsigned int GetNumberOfBitsAllocated(void) const;
|
|
|
|
static bool DoEndianSwap(void);
|
|
static bool IsBigEndian(void);
|
|
static bool IsNetworkOrder(void);
|
|
static void ReverseBytes(unsigned char *input, unsigned char *output, int length);
|
|
static void ReverseBytesInPlace(unsigned char *data, int length);
|
|
|
|
private:
|
|
|
|
BitStream( const BitStream &invalid) {
|
|
#ifdef _MSC_VER
|
|
#pragma warning(disable:4100)
|
|
// warning C4100: 'invalid' : unreferenced formal parameter
|
|
#endif
|
|
|
|
}
|
|
|
|
/// Assume the input source points to a native type, compress and write it.
|
|
void WriteCompressed( const unsigned char* input, const int size, const bool unsignedData );
|
|
|
|
/// Assume the input source points to a compressed native type. Decompress and read it.
|
|
bool ReadCompressed( unsigned char* output, const int size, const bool unsignedData );
|
|
|
|
|
|
int numberOfBitsUsed;
|
|
|
|
int numberOfBitsAllocated;
|
|
|
|
int readOffset;
|
|
|
|
unsigned char *data;
|
|
|
|
/// true if the internal buffer is copy of the data passed to the constructor
|
|
bool copyData;
|
|
|
|
/// BitStreams that use less than BITSTREAM_STACK_ALLOCATION_SIZE use the stack, rather than the heap to store data. It switches over if BITSTREAM_STACK_ALLOCATION_SIZE is exceeded
|
|
unsigned char stackData[BITSTREAM_STACK_ALLOCATION_SIZE];
|
|
};
|
|
|
|
inline bool BitStream::SerializeBits(bool writeToBitstream, unsigned char* input, int numberOfBitsToSerialize, const bool rightAlignedBits )
|
|
{
|
|
if (writeToBitstream)
|
|
WriteBits(input,numberOfBitsToSerialize,rightAlignedBits);
|
|
else
|
|
return ReadBits(input,numberOfBitsToSerialize,rightAlignedBits);
|
|
return true;
|
|
}
|
|
|
|
|
|
}
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma warning( pop )
|
|
#endif
|
|
|
|
#endif // VC6
|
|
|
|
#endif |