From 7028cbe09c688437910a25623098762bf0fa592d Mon Sep 17 00:00:00 2001 From: David Walter Seikel Date: Mon, 28 Mar 2016 22:28:34 +1000 Subject: Move Irrlicht to src/others. --- .../source/Irrlicht/CImageLoaderPCX.cpp | 231 +++++++++++++++++++++ 1 file changed, 231 insertions(+) create mode 100644 src/others/irrlicht-1.8.1/source/Irrlicht/CImageLoaderPCX.cpp (limited to 'src/others/irrlicht-1.8.1/source/Irrlicht/CImageLoaderPCX.cpp') diff --git a/src/others/irrlicht-1.8.1/source/Irrlicht/CImageLoaderPCX.cpp b/src/others/irrlicht-1.8.1/source/Irrlicht/CImageLoaderPCX.cpp new file mode 100644 index 0000000..50ddf6e --- /dev/null +++ b/src/others/irrlicht-1.8.1/source/Irrlicht/CImageLoaderPCX.cpp @@ -0,0 +1,231 @@ +// Copyright (C) 2002-2012 Nikolaus Gebhardt +// This file is part of the "Irrlicht Engine". +// For conditions of distribution and use, see copyright notice in irrlicht.h + +#include "CImageLoaderPCX.h" + +#ifdef _IRR_COMPILE_WITH_PCX_LOADER_ + +#include "IReadFile.h" +#include "SColor.h" +#include "CColorConverter.h" +#include "CImage.h" +#include "os.h" +#include "irrString.h" + + +namespace irr +{ +namespace video +{ + + +//! constructor +CImageLoaderPCX::CImageLoaderPCX() +{ + #ifdef _DEBUG + setDebugName("CImageLoaderPCX"); + #endif +} + + +//! returns true if the file maybe is able to be loaded by this class +//! based on the file extension (e.g. ".tga") +bool CImageLoaderPCX::isALoadableFileExtension(const io::path& filename) const +{ + return core::hasFileExtension ( filename, "pcx" ); +} + + + +//! returns true if the file maybe is able to be loaded by this class +bool CImageLoaderPCX::isALoadableFileFormat(io::IReadFile* file) const +{ + u8 headerID; + file->read(&headerID, sizeof(headerID)); + return headerID == 0x0a; +} + + +//! creates a image from the file +IImage* CImageLoaderPCX::loadImage(io::IReadFile* file) const +{ + SPCXHeader header; + s32* paletteData = 0; + + file->read(&header, sizeof(header)); + #ifdef __BIG_ENDIAN__ + header.XMin = os::Byteswap::byteswap(header.XMin); + header.YMin = os::Byteswap::byteswap(header.YMin); + header.XMax = os::Byteswap::byteswap(header.XMax); + header.YMax = os::Byteswap::byteswap(header.YMax); + header.HorizDPI = os::Byteswap::byteswap(header.HorizDPI); + header.VertDPI = os::Byteswap::byteswap(header.VertDPI); + header.BytesPerLine = os::Byteswap::byteswap(header.BytesPerLine); + header.PaletteType = os::Byteswap::byteswap(header.PaletteType); + header.HScrSize = os::Byteswap::byteswap(header.HScrSize); + header.VScrSize = os::Byteswap::byteswap(header.VScrSize); + #endif + + //! return if the header is wrong + if (header.Manufacturer != 0x0a && header.Encoding != 0x01) + return 0; + + // return if this isn't a supported type + if ((header.BitsPerPixel != 8) && (header.BitsPerPixel != 4) && (header.BitsPerPixel != 1)) + { + os::Printer::log("Unsupported bits per pixel in PCX file.", + file->getFileName(), irr::ELL_WARNING); + return 0; + } + + // read palette + if( (header.BitsPerPixel == 8) && (header.Planes == 1) ) + { + // the palette indicator (usually a 0x0c is found infront of the actual palette data) + // is ignored because some exporters seem to forget to write it. This would result in + // no image loaded before, now only wrong colors will be set. + const long pos = file->getPos(); + file->seek( file->getSize()-256*3, false ); + + u8 *tempPalette = new u8[768]; + paletteData = new s32[256]; + file->read( tempPalette, 768 ); + + for( s32 i=0; i<256; i++ ) + { + paletteData[i] = (0xff000000 | + (tempPalette[i*3+0] << 16) | + (tempPalette[i*3+1] << 8) | + (tempPalette[i*3+2])); + } + + delete [] tempPalette; + + file->seek(pos); + } + else if( header.BitsPerPixel == 4 ) + { + paletteData = new s32[16]; + for( s32 i=0; i<16; i++ ) + { + paletteData[i] = (0xff000000 | + (header.Palette[i*3+0] << 16) | + (header.Palette[i*3+1] << 8) | + (header.Palette[i*3+2])); + } + } + + // read image data + const s32 width = header.XMax - header.XMin + 1; + const s32 height = header.YMax - header.YMin + 1; + const s32 imagebytes = header.BytesPerLine * header.Planes * header.BitsPerPixel * height / 8; + u8* PCXData = new u8[imagebytes]; + + u8 cnt, value; + s32 lineoffset=0, linestart=0, nextmode=1; + for(s32 offset = 0; offset < imagebytes; offset += cnt) + { + file->read(&cnt, 1); + if( !((cnt & 0xc0) == 0xc0) ) + { + value = cnt; + cnt = 1; + } + else + { + cnt &= 0x3f; + file->read(&value, 1); + } + if (header.Planes==1) + memset(PCXData+offset, value, cnt); + else + { + for (u8 i=0; i=3*header.BytesPerLine) + { + lineoffset=nextmode; + if (++nextmode==3) + nextmode=0; + if (lineoffset==0) + linestart += 3*header.BytesPerLine; + } + } + } + } + + // create image + video::IImage* image = 0; + s32 pad = (header.BytesPerLine - width * header.BitsPerPixel / 8) * header.Planes; + + if (pad < 0) + pad = -pad; + + if (header.BitsPerPixel==8) + { + switch(header.Planes) // TODO: Other formats + { + case 1: + image = new CImage(ECF_A1R5G5B5, core::dimension2d(width, height)); + if (image) + CColorConverter::convert8BitTo16Bit(PCXData, (s16*)image->lock(), width, height, paletteData, pad); + break; + case 3: + image = new CImage(ECF_R8G8B8, core::dimension2d(width, height)); + if (image) + CColorConverter::convert24BitTo24Bit(PCXData, (u8*)image->lock(), width, height, pad); + break; + } + } + else if (header.BitsPerPixel==4) + { + if (header.Planes==1) + { + image = new CImage(ECF_A1R5G5B5, core::dimension2d(width, height)); + if (image) + CColorConverter::convert4BitTo16Bit(PCXData, (s16*)image->lock(), width, height, paletteData, pad); + } + } + else if (header.BitsPerPixel==1) + { + if (header.Planes==4) + { + image = new CImage(ECF_A1R5G5B5, core::dimension2d(width, height)); + if (image) + CColorConverter::convert4BitTo16Bit(PCXData, (s16*)image->lock(), width, height, paletteData, pad); + } + else if (header.Planes==1) + { + image = new CImage(ECF_A1R5G5B5, core::dimension2d(width, height)); + if (image) + CColorConverter::convert1BitTo16Bit(PCXData, (s16*)image->lock(), width, height, pad); + } + } + if (image) + image->unlock(); + + // clean up + + delete [] paletteData; + delete [] PCXData; + + return image; +} + + +//! creates a loader which is able to load pcx images +IImageLoader* createImageLoaderPCX() +{ + return new CImageLoaderPCX(); +} + + + +} // end namespace video +} // end namespace irr + +#endif + -- cgit v1.1