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Viewing changes to source/Irrlicht/CImageLoaderRGB.h

  • Committer: Mantas Kriaučiūnas
  • Date: 2011-07-18 13:06:25 UTC
  • Revision ID: mantas@akl.lt-20110718130625-c5pvifp61e7kj1ol
Included whole irrlicht SVN libraries to work around launchpad recipe issue with quilt, see https://answers.launchpad.net/launchpad/+question/165193

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source/Irrlicht/CImageLoaderRGB.h
 
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// Copyright (C) 2009-2011 Gary Conway
 
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// This file is part of the "Irrlicht Engine".
 
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// For conditions of distribution and use, see copyright notice in irrlicht.h
 
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/*
 
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        Author: Gary Conway (Viper) - co-author of the ZIP file format, Feb 1989,
 
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                                                 see the story at http://www.idcnet.us/ziphistory.html
 
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        Website:        http://idcnet.us
 
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        Email:          codeslinger@vipergc.com
 
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        Created:        March 1, 2009
 
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        Version:        1.0
 
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        Updated:
 
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*/
 
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#ifndef __C_IMAGE_LOADER_RGB_H_INCLUDED__
 
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#define __C_IMAGE_LOADER_RGB_H_INCLUDED__
 
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// define _IRR_RGB_FILE_INVERTED_IMAGE_ to preserve the inverted format of the RGB file
 
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// commenting this out will invert the inverted image,resulting in the image being upright
 
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#define _IRR_RGB_FILE_INVERTED_IMAGE_
 
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#include "IrrCompileConfig.h"
 
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#ifdef _IRR_COMPILE_WITH_RGB_LOADER_
 
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#include "IImageLoader.h"
 
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namespace irr
 
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{
 
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namespace video
 
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{
 
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// byte-align structures
 
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#if defined(_MSC_VER) ||  defined(__BORLANDC__) || defined (__BCPLUSPLUS__)
 
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#       pragma pack( push, packing )
 
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#       pragma pack( 1 )
 
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#       define PACK_STRUCT
 
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#elif defined( __GNUC__ )
 
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#       define PACK_STRUCT      __attribute__((packed))
 
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#else
 
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#       error compiler not supported
 
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#endif
 
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        // the RGB image file header structure
 
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        struct SRGBHeader
 
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        {
 
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                u16     Magic;                                                  // IRIS image file magic number
 
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                u8  Storage;                                            // Storage format
 
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                u8  BPC;                                                        // Number of bytes per pixel channel
 
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                u16 Dimension;                                          // Number of dimensions
 
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                u16 Xsize;                                                      // X size in pixels
 
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                u16 Ysize;                                                      // Y size in pixels
 
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                u16 Zsize;                                                      // Z size in pixels
 
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                u32 Pixmin;                                                     // Minimum pixel value
 
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                u32 Pixmax;                                                     // Maximum pixel value
 
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                u32 Dummy1;                                                     // ignored
 
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                char Imagename[80];                                     // Image name
 
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                u32 Colormap;                                           // Colormap ID
 
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//              char Dummy2[404];                                       // Ignored
 
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        } PACK_STRUCT;
 
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// Default alignment
 
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#if defined(_MSC_VER) ||  defined(__BORLANDC__) || defined (__BCPLUSPLUS__)
 
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#       pragma pack( pop, packing )
 
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#endif
 
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#undef PACK_STRUCT
 
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        // this structure holds context specific data about the file being loaded.
 
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        typedef struct _RGBdata
 
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        {
 
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                u8 *tmp,
 
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                   *tmpR,
 
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                   *tmpG,
 
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                   *tmpB,
 
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                   *tmpA;
 
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                u32 *StartTable;        // compressed data table, holds file offsets
 
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                u32 *LengthTable;       // length for the above data, hold lengths for above
 
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                u32 TableLen;           // len of above tables
 
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                SRGBHeader Header;      // define the .rgb file header
 
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                u32 ImageSize;
 
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                u8 *rgbData;
 
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        public:
 
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                _RGBdata() : tmp(0), tmpR(0), tmpG(0), tmpB(0), tmpA(0),
 
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                        StartTable(0), LengthTable(0), TableLen(0), ImageSize(0), rgbData(0)
 
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                {
 
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                }
 
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                ~_RGBdata()
 
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                {
 
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                        delete [] tmp;
 
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                        delete [] tmpR;
 
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                        delete [] tmpG;
 
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                        delete [] tmpB;
 
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                        delete [] tmpA;
 
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                        delete [] StartTable;
 
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                        delete [] LengthTable;
 
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                        delete [] rgbData;
 
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                }
 
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                bool allocateTemps()
 
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                {
 
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                        tmp = tmpR = tmpG = tmpB = tmpA = 0;
 
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                        tmp = new u8 [Header.Xsize * 256 * Header.BPC];
 
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                        if (!tmp)
 
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                                return false;
 
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                        if (Header.Zsize >= 1)
 
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                        {
 
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                                if ( !(tmpR = new u8 [Header.Xsize * Header.BPC]) )
 
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                                        return false;
 
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                        }
 
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                        if (Header.Zsize >= 2)
 
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                        {
 
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                                if ( !(tmpG = new u8 [Header.Xsize * Header.BPC]) )
 
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                                        return false;
 
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                        }
 
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                        if (Header.Zsize >= 3)
 
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                        {
 
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                                if ( !(tmpB = new u8 [Header.Xsize * Header.BPC]) )
 
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                                        return false;
 
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                        }
 
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                        if (Header.Zsize >= 4)
 
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                        {
 
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                                if ( !(tmpA = new u8 [Header.Xsize * Header.BPC]) )
 
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                                        return false;
 
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                        }
 
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                        return true;
 
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                }
 
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        } rgbStruct;
 
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//! Surface Loader for Silicon Graphics RGB files
 
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class CImageLoaderRGB : public IImageLoader
 
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{
 
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public:
 
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        //! constructor
 
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        CImageLoaderRGB();
 
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        //! returns true if the file maybe is able to be loaded by this class
 
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        //! based on the file extension (e.g. ".tga")
 
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        virtual bool isALoadableFileExtension(const io::path& filename) const;
 
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        //! returns true if the file maybe is able to be loaded by this class
 
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        virtual bool isALoadableFileFormat(io::IReadFile* file) const;
 
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        //! creates a surface from the file
 
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        virtual IImage* loadImage(io::IReadFile* file) const;
 
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private:
 
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        bool readHeader(io::IReadFile* file, rgbStruct& rgb) const;
 
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        void readRGBrow(u8 *buf, int y, int z, io::IReadFile* file, rgbStruct& rgb) const;
 
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        void processFile(io::IReadFile *file, rgbStruct& rgb) const;
 
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        bool checkFormat(io::IReadFile *file, rgbStruct& rgb) const;
 
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        bool readOffsetTables(io::IReadFile* file, rgbStruct& rgb) const;
 
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        void converttoARGB(u32* in, const u32 size) const;
 
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};
 
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} // end namespace video
 
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} // end namespace irr
 
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#endif // _IRR_COMPILE_WITH_RGB_LOADER_
 
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#endif // __C_IMAGE_LOADER_RGB_H_INCLUDED__