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"L. Spiro Engine"
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F:/My Projects/LSEngine/Modules/LSStandardLib/Src/Streams/LSSTDBitStream.h
00001 00016 #ifndef __LSSTD_BITSTREAM_H__ 00017 #define __LSSTD_BITSTREAM_H__ 00018 00019 #include "../LSSTDStandardLib.h" 00020 #include "LSSTDStream.h" 00021 00022 namespace lsstd { 00023 00030 class CBitStream : public IStream { 00031 public : 00032 // == Various constructors. 00033 LSE_CALL CBitStream(); 00034 LSE_CALL ~CBitStream(); 00035 00036 00037 // == Functions. 00041 LSVOID LSE_CALL Reset(); 00042 00050 LSBOOL LSE_CALL ReadBits( LSUINT8 * _pui8Buffer, LSUINT32 _ui32BitsToRead ) const; 00051 00059 virtual LSUINT32 LSE_CALL ReadBytes( LSUINT8 * _pui8Buffer, LSUINT32 _ui32BytesToRead ) const; 00060 00066 virtual LSUINT64 LSE_CALL ReadUInt64() const; 00067 00073 virtual LSUINT32 LSE_CALL ReadUInt32() const; 00074 00080 virtual LSUINT16 LSE_CALL ReadUInt16() const; 00081 00087 virtual LSUINT8 LSE_CALL ReadUInt8() const; 00088 00094 virtual LSFLOAT LSE_CALL ReadFloat() const; 00095 00101 virtual LSDOUBLE LSE_CALL ReadDouble() const; 00102 00110 LSBOOL LSE_CALL WriteBits( const LSUINT8 * _pui8Buffer, LSUINT32 _ui32BitsToWrite ); 00111 00119 virtual LSUINT32 LSE_CALL WriteBytes( const LSUINT8 * _pui8Buffer, LSUINT32 _ui32BytesToWrite ); 00120 00126 virtual LSBOOL LSE_CALL WriteUInt64( const LSUINT64 &_ui64Value ); 00127 00133 virtual LSBOOL LSE_CALL WriteUInt32( LSUINT32 _ui32Value ); 00134 00140 virtual LSBOOL LSE_CALL WriteUInt16( LSUINT16 _ui16Value ); 00141 00147 virtual LSBOOL LSE_CALL WriteUInt8( LSUINT8 _ui8Value ); 00148 00154 virtual LSBOOL LSE_CALL WriteFloat( LSFLOAT _fValue ); 00155 00161 virtual LSBOOL LSE_CALL WriteDouble( const LSDOUBLE &_dValue ); 00162 00169 LSUINT32 LSE_CALL GetLengthInBytes() const; 00170 00176 const LSUINT8 * LSE_CALL GetRawBytes() const; 00177 00185 LSUINT64 LSE_CALL SetPos( LSUINT64 _ui64Pos ) const; 00186 00192 LSUINT64 LSE_CALL GetPos() const; 00193 00202 LSBOOL LSE_CALL PreAlloc( LSUINT64 _ui64NewSize ); 00203 00212 LSVOID LSE_CALL Borrow( const LSUINT8 * _pui8Buffer, LSUINTPTR _uiptrSize ); 00213 00214 protected : 00215 // == Members. 00219 LSUINT64 m_ui64TotalBits; 00220 00224 LSUINT32 * m_pui32Buffer; 00225 00229 LSUINT32 m_ui32Total; 00230 00234 LSUINT32 m_ui32Alloc; 00235 00239 LSBOOL m_bBorrowed; 00240 00241 00248 mutable LSUINT64 m_ui64Pos; 00249 00250 00251 // == Functions. 00259 LSBOOL LSE_CALL Alloc( LSUINT32 _ui32Total ); 00260 00268 virtual LSVOID * LSE_CALL ReAlloc( LSVOID * _pvOriginal, LSUINT32 _ui32Total ) const; 00269 00275 virtual LSVOID LSE_CALL Free( LSVOID * _pvOriginal ) const; 00276 00284 static LSVOID LSE_CALL GetByteAndBit( const LSUINT64 &_ui64BitPos, 00285 LSUINT32 &_ui32ByteIndex, LSUINT32 &_ui32BitIndex ); 00286 }; 00287 00288 00289 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 00290 // DEFINITIONS 00291 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 00292 // == Functions. 00300 LSE_INLINE LSVOID LSE_CALL CBitStream::GetByteAndBit( const LSUINT64 &_ui64BitPos, 00301 LSUINT32 &_ui32ByteIndex, LSUINT32 &_ui32BitIndex ) { 00302 _ui32ByteIndex = static_cast<LSUINT32>(_ui64BitPos >> 3ULL); 00303 _ui32BitIndex = static_cast<LSUINT32>(_ui64BitPos & 7ULL); 00304 } 00305 00306 } // namespace lsstd 00307 00308 #endif // __LSSTD_BITSTREAM_H__
