TB10.1 Example Applications: examples/Multimedia/ICL/ICLCodec/ImageUtils.h Source File

00001 //
-00002 // ImageUtils.h
-00003 //
-00004 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
-00005 // All rights reserved.
-00006 // This component and the accompanying materials are made available
-00007 // under the terms of "Eclipse Public License v1.0"
-00008 // which accompanies this distribution, and is available
-00009 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
-00010 //
-00011 // Initial Contributors:
-00012 // Nokia Corporation - initial contribution.
-00013 //
-00014 // Contributors:
-00015 //
-00016 // Description:
-00017 //
-00018 //
-00019 
-00020 #ifndef __ImageUtils_h
-00021 #define __ImageUtils_h
-00022 
-00023 
-00024 //
-00025 // PtrReadUtil - utility class with methods for standard 
-00026 // reading data from a TUint8* string
-00027 //
-00028 
-00029 class PtrReadUtil
-00030         {
-00031 public:
-00032         // This calls decode from TUint8*
-00033         static TInt8 ReadInt8(const TUint8* aPtr);
-00034         static TUint8 ReadUint8(const TUint8* aPtr);
-00035         static TInt16 ReadInt16(const TUint8* aPtr);
-00036         static TInt16 ReadBigEndianInt16(const TUint8* aPtr);
-00037         static TUint16 ReadUint16(const TUint8* aPtr);
-00038         static TUint16 ReadBigEndianUint16(const TUint8* aPtr);
-00039         static TInt32 ReadInt32(const TUint8* aPtr);
-00040         static TInt32 ReadBigEndianInt32(const TUint8* aPtr);
-00041         static TUint32 ReadUint32(const TUint8* aPtr);
-00042         static TUint32 ReadBigEndianUint32(const TUint8* aPtr);
-00043         // these calls also increment the pointer
-00044         static TInt8 ReadInt8Inc(const TUint8*& aPtr);
-00045         static TUint8 ReadUint8Inc(const TUint8*& aPtr);
-00046         static TInt16 ReadInt16Inc(const TUint8*& aPtr);
-00047         static TInt16 ReadBigEndianInt16Inc(const TUint8*& aPtr);
-00048         static TUint16 ReadUint16Inc(const TUint8*& aPtr);
-00049         static TUint16 ReadBigEndianUint16Inc(const TUint8*& aPtr);
-00050         static TInt32 ReadInt32Inc(const TUint8*& aPtr);
-00051         static TInt32 ReadBigEndianInt32Inc(const TUint8*& aPtr);
-00052         static TUint32 ReadUint32Inc(const TUint8*& aPtr);
-00053         static TUint32 ReadBigEndianUint32Inc(const TUint8*& aPtr);
-00054         };
-00055 
-00056 inline TUint8 PtrReadUtil::ReadUint8(const TUint8* aPtr)
-00057         {
-00058         return *aPtr ;
-00059         }
-00060 
-00061 inline TInt8 PtrReadUtil::ReadInt8(const TUint8* aPtr)
-00062         {
-00063         return TInt8(ReadUint8(aPtr));
-00064         }
-00065 
-00066 inline TUint16 PtrReadUtil::ReadUint16(const TUint8* aPtr)
-00067         {
-00068         return TUint16(aPtr[0] | (aPtr[1]<<8));
-00069         }
-00070 
-00071 inline TInt16 PtrReadUtil::ReadInt16(const TUint8* aPtr)
-00072         {
-00073         return TInt16(ReadUint16(aPtr));
-00074         }
-00075 
-00076 inline TUint32 PtrReadUtil::ReadUint32(const TUint8* aPtr)
-00077         {
-00078         return TUint32(aPtr[0] | (aPtr[1]<<8) | (aPtr[2]<<16) | (aPtr[3]<<24));
-00079         }
-00080 
-00081 inline TInt32 PtrReadUtil::ReadInt32(const TUint8* aPtr)
-00082         {
-00083         return TInt32(ReadUint32(aPtr));
-00084         }
-00085 
-00086 inline TUint16 PtrReadUtil::ReadBigEndianUint16(const TUint8* aPtr)
-00087         {
-00088         return TUint16((aPtr[0]<<8) | aPtr[1]);
-00089         }
-00090 
-00091 inline TInt16 PtrReadUtil::ReadBigEndianInt16(const TUint8* aPtr)
-00092         {
-00093         return TInt16(ReadBigEndianInt16(aPtr));
-00094         }
-00095 
-00096 inline TUint32 PtrReadUtil::ReadBigEndianUint32(const TUint8* aPtr)
-00097         {
-00098         return TUint32((aPtr[0]<<24) | (aPtr[1]<<16) | (aPtr[2]<<8) | aPtr[3]);
-00099         }
-00100 
-00101 inline TInt32 PtrReadUtil::ReadBigEndianInt32(const TUint8* aPtr)
-00102         {
-00103         return TInt32(ReadBigEndianInt32(aPtr));
-00104         }
-00105 
-00106 inline TInt8 PtrReadUtil::ReadInt8Inc(const TUint8*& aPtr)
-00107         {
-00108         TInt8 result = ReadInt8(aPtr);
-00109         aPtr += 1;
-00110         return result;
-00111         }
-00112 
-00113 inline TUint8 PtrReadUtil::ReadUint8Inc(const TUint8*& aPtr)
-00114         {
-00115         TUint8 result = ReadUint8(aPtr);
-00116         aPtr += 1;
-00117         return result;
-00118         }
-00119 
-00120 inline TInt16 PtrReadUtil::ReadInt16Inc(const TUint8*& aPtr)
-00121         {
-00122         TInt16 result = ReadInt16(aPtr);
-00123         aPtr += 2;
-00124         return result;
-00125         }
-00126 
-00127 inline TUint16 PtrReadUtil::ReadUint16Inc(const TUint8*& aPtr)
-00128         {
-00129         TUint16 result = ReadUint16(aPtr);
-00130         aPtr += 2;
-00131         return result;
-00132         }
-00133 
-00134 inline TInt16 PtrReadUtil::ReadBigEndianInt16Inc(const TUint8*& aPtr)
-00135         {
-00136         TInt16 result = ReadBigEndianInt16(aPtr);
-00137         aPtr += 2;
-00138         return result;
-00139         }
-00140 
-00141 inline TUint16 PtrReadUtil::ReadBigEndianUint16Inc(const TUint8*& aPtr)
-00142         {
-00143         TUint16 result = ReadBigEndianUint16(aPtr);
-00144         aPtr += 2;
-00145         return result;
-00146         }
-00147 
-00148 inline TInt32 PtrReadUtil::ReadInt32Inc(const TUint8*& aPtr)
-00149         {
-00150         TInt32 result = ReadInt32(aPtr);
-00151         aPtr += 4;
-00152         return result;
-00153         }
-00154 
-00155 inline TUint32 PtrReadUtil::ReadUint32Inc(const TUint8*& aPtr)
-00156         {
-00157         TUint32 result = ReadUint32(aPtr);
-00158         aPtr += 4;
-00159         return result;
-00160         }
-00161 
-00162 inline TInt32 PtrReadUtil::ReadBigEndianInt32Inc(const TUint8*& aPtr)
-00163         {
-00164         TInt32 result = ReadBigEndianInt32(aPtr);
-00165         aPtr += 4;
-00166         return result;
-00167         }
-00168 
-00169 inline TUint32 PtrReadUtil::ReadBigEndianUint32Inc(const TUint8*& aPtr)
-00170         {
-00171         TUint32 result = ReadBigEndianUint32(aPtr);
-00172         aPtr += 4;
-00173         return result;
-00174         }
-00175 
-00176 class PtrWriteUtil
-00177         {
-00178 public:
-00179         static void WriteInt8(TUint8* aPtr, TInt aData);
-00180         static void WriteInt16(TUint8* aPtr, TInt aData);
-00181         static void WriteInt32(TUint8* aPtr, TInt aData);
-00182         // Big endian version
-00183         static void WriteBigEndianInt32(TUint8* aPtr, TInt32 aData);
-00184         };
-00185 
-00186 inline void PtrWriteUtil::WriteInt8(TUint8* aPtr, TInt aData)
-00187         {
-00188         aPtr[0] = TUint8(aData);
-00189         }
-00190 
-00191 inline void PtrWriteUtil::WriteInt16(TUint8* aPtr, TInt aData)
-00192         {
-00193         aPtr[0] = TUint8(aData);
-00194         aPtr[1] = TUint8(aData>>8);
-00195         }
-00196 
-00197 inline void PtrWriteUtil::WriteInt32(TUint8* aPtr, TInt aData)
-00198         {
-00199         aPtr[0] = TUint8(aData);
-00200         aPtr[1] = TUint8(aData>>8);
-00201         aPtr[2] = TUint8(aData>>16);
-00202         aPtr[3] = TUint8(aData>>24);
-00203         }
-00204 
-00205 inline void PtrWriteUtil::WriteBigEndianInt32(TUint8* aPtr, TInt32 aData)
-00206         {
-00207         aPtr[0] = TUint8(aData>>24);
-00208         aPtr[1] = TUint8(aData>>16);
-00209         aPtr[2] = TUint8(aData>>8);
-00210         aPtr[3] = TUint8(aData);
-00211         }
-00212 
-00213 #endif // __ImageUtils_h
-