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Merging r5975 through r6036 from trunk to ogl-es branch.

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GLES drivers adapted, but only did make compile-tests.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6038 dfc29bdd-3216-0410-991c-e03cc46cb475
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cutealien
2020-01-03 19:05:16 +00:00
commit 2ae2a551a6
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source/Irrlicht/CImageLoaderPPM.cpp Normal file
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// Copyright (C) 2007-2012 Christian Stehno
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#include "CImageLoaderPPM.h"
#ifdef _IRR_COMPILE_WITH_PPM_LOADER_
#include "IReadFile.h"
#include "CColorConverter.h"
#include "CImage.h"
#include "os.h"
#include "fast_atof.h"
#include "coreutil.h"
namespace irr
{
namespace video
{
//! constructor
CImageLoaderPPM::CImageLoaderPPM()
{
#ifdef _DEBUG
setDebugName("CImageLoaderPPM");
#endif
}
//! returns true if the file maybe is able to be loaded by this class
//! based on the file extension (e.g. ".tga")
bool CImageLoaderPPM::isALoadableFileExtension(const io::path& filename) const
{
return core::hasFileExtension ( filename, "ppm", "pgm", "pbm" );
}
//! returns true if the file maybe is able to be loaded by this class
bool CImageLoaderPPM::isALoadableFileFormat(io::IReadFile* file) const
{
c8 id[2]={0};
file->read(&id, 2);
return (id[0]=='P' && id[1]>'0' && id[1]<'7');
}
//! creates a surface from the file
IImage* CImageLoaderPPM::loadImage(io::IReadFile* file) const
{
IImage* image;
if (file->getSize() < 12)
return 0;
c8 id[2];
file->read(&id, 2);
if (id[0]!='P' || id[1]<'1' || id[1]>'6')
return 0;
const u8 format = id[1] - '0';
const bool binary = format>3;
core::stringc token;
getNextToken(file, token);
const u32 width = core::strtoul10(token.c_str());
getNextToken(file, token);
const u32 height = core::strtoul10(token.c_str());
u8* data = 0;
const u32 size = width*height;
if (format==1 || format==4)
{
skipToNextToken(file); // go to start of data
const u32 bytesize = size/8+(size & 3)?1:0;
if (binary)
{
if (file->getSize()-file->getPos() < (long)bytesize)
return 0;
data = new u8[bytesize];
file->read(data, bytesize);
}
else
{
if (file->getSize()-file->getPos() < (long)(2*size)) // optimistic test
return 0;
data = new u8[bytesize];
memset(data, 0, bytesize);
u32 shift=0;
for (u32 i=0; i<size; ++i)
{
getNextToken(file, token);
if (token == "1")
data[i/8] |= (0x01 << shift);
if (++shift == 8)
shift=0;
}
}
image = new CImage(ECF_A1R5G5B5, core::dimension2d<u32>(width, height));
if (image)
CColorConverter::convert1BitTo16Bit(data, (s16*)image->getData(), width, height);
}
else
{
getNextToken(file, token);
const u32 maxDepth = core::strtoul10(token.c_str());
if (maxDepth > 255) // no double bytes yet
return 0;
skipToNextToken(file); // go to start of data
if (format==2 || format==5)
{
if (binary)
{
if (file->getSize()-file->getPos() < (long)size)
return 0;
data = new u8[size];
file->read(data, size);
image = new CImage(ECF_A8R8G8B8, core::dimension2d<u32>(width, height));
if (image)
{
u8* ptr = (u8*)image->getData();
for (u32 i=0; i<size; ++i)
{
*ptr++ = data[i];
*ptr++ = data[i];
*ptr++ = data[i];
*ptr++ = 255;
}
}
}
else
{
if (file->getSize()-file->getPos() < (long)(2*size)) // optimistic test
return 0;
image = new CImage(ECF_A8R8G8B8, core::dimension2d<u32>(width, height));
if (image)
{
u8* ptr = (u8*)image->getData();
for (u32 i=0; i<size; ++i)
{
getNextToken(file, token);
const u8 num = (u8)core::strtoul10(token.c_str());
*ptr++ = num;
*ptr++ = num;
*ptr++ = num;
*ptr++ = 255;
}
}
}
}
else
{
const u32 bytesize = 3*size;
if (binary)
{
if (file->getSize()-file->getPos() < (long)bytesize)
return 0;
data = new u8[bytesize];
file->read(data, bytesize);
image = new CImage(ECF_A8R8G8B8, core::dimension2d<u32>(width, height));
if (image)
{
u8* ptr = (u8*)image->getData();
for (u32 i=0; i<size; ++i)
{
*ptr++ = data[3*i];
*ptr++ = data[3*i+1];
*ptr++ = data[3*i+2];
*ptr++ = 255;
}
}
}
else
{
if (file->getSize()-file->getPos() < (long)(2*bytesize)) // optimistic test
return 0;
image = new CImage(ECF_A8R8G8B8, core::dimension2d<u32>(width, height));
if (image)
{
u8* ptr = (u8*)image->getData();
for (u32 i=0; i<size; ++i)
{
getNextToken(file, token);
*ptr++ = (u8)core::strtoul10(token.c_str());
getNextToken(file, token);
*ptr++ = (u8)core::strtoul10(token.c_str());
getNextToken(file, token);
*ptr++ = (u8)core::strtoul10(token.c_str());
*ptr++ = 255;
}
}
}
}
}
delete [] data;
return image;
}
//! read the next token from file
void CImageLoaderPPM::getNextToken(io::IReadFile* file, core::stringc& token) const
{
token = "";
c8 c;
while(file->getPos()<file->getSize())
{
file->read(&c, 1);
if (c=='#')
{
while (c!='\n' && c!='\r' && (file->getPos()<file->getSize()))
file->read(&c, 1);
}
else if (!core::isspace(c))
{
token.append(c);
break;
}
}
while(file->getPos()<file->getSize())
{
file->read(&c, 1);
if (c=='#')
{
while (c!='\n' && c!='\r' && (file->getPos()<file->getSize()))
file->read(&c, 1);
}
else if (!core::isspace(c))
token.append(c);
else
break;
}
}
//! skip to next token (skip whitespace)
void CImageLoaderPPM::skipToNextToken(io::IReadFile* file) const
{
c8 c;
while(file->getPos()<file->getSize())
{
file->read(&c, 1);
if (c=='#')
{
while (c!='\n' && c!='\r' && (file->getPos()<file->getSize()))
file->read(&c, 1);
}
else if (!core::isspace(c))
{
file->seek(-1, true); // put back
break;
}
}
}
//! creates a loader which is able to load windows bitmaps
IImageLoader* createImageLoaderPPM()
{
return new CImageLoaderPPM;
}
} // end namespace video
} // end namespace irr
#endif