295 lines
6.6 KiB
C++
295 lines
6.6 KiB
C++
//注：起名为ILImageSupport是为了避免与IL中现有的ilimage冲突
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#include"ILImage.h"
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#include<IL/ilu.h>
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#include<hgl/log/LogInfo.h>
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#include<hgl/filesystem/FileSystem.h>
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using namespace hgl;
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namespace
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{
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const OSString GetILFormatName(const ILuint format)
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{
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#define IL_FMT2NAME(name) if(format==IL_##name)return OS_TEXT(#name);
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IL_FMT2NAME(COLOR_INDEX)
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IL_FMT2NAME(ALPHA)
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IL_FMT2NAME(RGB)
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IL_FMT2NAME(RGBA)
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IL_FMT2NAME(BGR)
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IL_FMT2NAME(BGRA)
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IL_FMT2NAME(LUMINANCE)
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IL_FMT2NAME(LUMINANCE_ALPHA)
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#undef IL_FMT2NAME
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return OS_TEXT("Error format");
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}
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const OSString GetILTypeName(const ILuint type)
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{
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#define IL_TYPE2NAME(name) if(type==IL_##name)return OS_TEXT(#name);
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IL_TYPE2NAME(BYTE)
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IL_TYPE2NAME(UNSIGNED_BYTE)
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IL_TYPE2NAME(SHORT)
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IL_TYPE2NAME(UNSIGNED_SHORT)
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IL_TYPE2NAME(INT)
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IL_TYPE2NAME(UNSIGNED_INT)
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IL_TYPE2NAME(FLOAT)
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IL_TYPE2NAME(DOUBLE)
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IL_TYPE2NAME(HALF)
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#undef IL_TYPE2NAME
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return OS_TEXT("Error type");
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}
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}//namespace
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ILImage::ILImage()
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{
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ilGenImages(1,&il_index);
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}
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ILImage::ILImage(ILImage *img):ILImage()
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{
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ilGenImages(1,&il_index);
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Bind();
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ilCopyImage(img->il_index);
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Refresh();
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}
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ILImage::~ILImage()
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{
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ilDeleteImages(1,&il_index);
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}
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void ILImage::Copy(ILImage *img)
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{
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ilCopyImage(img->il_index);
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Refresh();
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}
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void ILImage::Refresh()
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{
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il_width =ilGetInteger(IL_IMAGE_WIDTH);
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il_height =ilGetInteger(IL_IMAGE_HEIGHT);
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il_depth =ilGetInteger(IL_IMAGE_DEPTH);
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il_bit =ilGetInteger(IL_IMAGE_BITS_PER_PIXEL);
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il_format =ilGetInteger(IL_IMAGE_FORMAT);
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il_type =ilGetInteger(IL_IMAGE_TYPE);
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if(ilGetInteger(IL_IMAGE_ORIGIN)==IL_ORIGIN_LOWER_LEFT)
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iluFlipImage();
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if(il_format==IL_COLOR_INDEX)
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{
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uint il_pattle=ilGetInteger(IL_PALETTE_TYPE);
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if(il_pattle==IL_PAL_RGB24||il_pattle==IL_PAL_BGR24
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||il_pattle==IL_PAL_RGB32||il_pattle==IL_PAL_BGR32)
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{
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channel_count=3;
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il_format=IL_RGB;
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il_type=IL_UNSIGNED_BYTE;
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ilConvertImage(il_format,il_type);
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}
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else
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if(il_pattle==IL_PAL_RGBA32||il_pattle==IL_PAL_BGRA32)
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{
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channel_count=4;
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il_format=IL_RGBA;
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il_type=IL_UNSIGNED_BYTE;
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ilConvertImage(il_format,il_type);
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}
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else
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{
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LOG_ERROR("Don't support the pattle format.");
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}
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}
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il_bit =ilGetInteger(IL_IMAGE_BITS_PER_PIXEL);
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if(il_format==IL_LUMINANCE||il_format==IL_ALPHA)channel_count=1;else
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if(il_format==IL_LUMINANCE_ALPHA) channel_count=2;else
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if(il_format==IL_RGB||il_format==IL_BGR) channel_count=3;else
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if(il_format==IL_RGBA||il_format==IL_BGRA) channel_count=4;else
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channel_count=0;
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}
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constexpr ILenum format_by_channel[]=
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{
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IL_LUMINANCE,
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IL_LUMINANCE_ALPHA,
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IL_RGB,
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IL_RGBA,
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};
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bool SaveImageToFile(const OSString &filename,ILuint w,ILuint h,const float scale,ILuint c,ILuint t,void *data)
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{
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if(filename.IsEmpty())return(false);
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if(w<=0||h<=1)return(false);
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if(c<1||c>4)return(false);
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if(!data)return(false);
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ILuint il_index;
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ilGenImages(1,&il_index);
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ilBindImage(il_index);
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if(!ilTexImage(w,h,1,c,format_by_channel[c-1],t,data))
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return(false);
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iluScale(w*scale,h*scale,1);
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iluFlipImage();
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ilEnable(IL_FILE_OVERWRITE);
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const bool result=ilSaveImage(filename.c_str());
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ilDeleteImages(1,&il_index);
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return result;
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}
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void ILImage::Bind()
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{
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ilBindImage(il_index);
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}
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bool ILImage::Resize(uint nw,uint nh)
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{
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if(nw==il_width&&nh==il_height)return(true);
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if(nw==0||nh==0)return(false);
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if(!iluScale(nw,nh,il_depth))
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return(false);
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il_width=nw;
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il_height=nh;
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return(true);
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}
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bool ILImage::GenMipmaps()
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{
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return iluBuildMipmaps();
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}
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bool ILImage::ActiveMipmap(ILuint mip)
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{
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return ilActiveMipmap(mip);
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}
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int ILImage::GetMipLevel()
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{
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return ilGetInteger(IL_NUM_MIPMAPS);
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}
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bool ILImage::Convert(ILuint format,ILuint type)
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{
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if(il_format==format
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&&il_type==type)return(true);
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if(!ilConvertImage(format,type))
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return(false);
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il_format=format;
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il_type=type;
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return(true);
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}
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bool ILImage::LoadFile(const OSString &filename)
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{
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Bind();
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if(!filesystem::FileExist(filename))
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{
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LOG_INFO(OS_TEXT("Can't find filename: ")+filename);
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return(false);
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}
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if(!ilLoadImage(filename.c_str()))
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return(false);
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LOG_INFO(OS_TEXT("\nFile: ")+filename);
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Refresh();
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LOG_INFO(OS_TEXT("\t width: ")+OSString::valueOf(il_width));
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LOG_INFO(OS_TEXT("\theight: ")+OSString::valueOf(il_height));
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LOG_INFO(OS_TEXT("\t depth: ")+OSString::valueOf(il_depth));
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LOG_INFO(OS_TEXT("\t bit: ")+OSString::valueOf(il_bit));
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LOG_INFO(OS_TEXT("\tformat: ")+GetILFormatName(il_format));
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LOG_INFO(OS_TEXT("\t type: ")+GetILTypeName(il_type));
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return(true);
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}
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void *ILImage::ToRGB(ILuint type)
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{
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if(il_format!=IL_RGB)
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Convert(IL_RGB,type);
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return ilGetData();
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}
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void *ILImage::ToGray(ILuint type)
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{
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if(il_format!=IL_LUMINANCE)
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Convert(IL_LUMINANCE,type);
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return ilGetData();
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}
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void *ILImage::GetR(ILuint type)
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{
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if(il_format==IL_ALPHA)return ilGetAlpha(type);
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if(il_format==IL_LUMINANCE)
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{
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if(il_type!=type)
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if(!Convert(il_format,type))
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return(nullptr);
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return ilGetData();
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}
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return(nullptr);
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}
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void *ILImage::GetData(ILuint format,ILuint type)
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{
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if(il_format!=format||il_type!=type)
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if(!Convert(format,type))
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return nullptr;
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return ilGetData();
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}
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template<typename T> void MixRGBA(T *rgba,T *alpha,int size)
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{
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int i;
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for(i=0;i<size;i++)
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{
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rgba+=3;
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*rgba++=*alpha++;
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}
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}
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void *ILImage::GetRGBA(ILuint type)
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{
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void *data=GetData(IL_RGBA,type);
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void *alpha=ilGetAlpha(type);
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const int size=width()*height();
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if(type==IL_UNSIGNED_BYTE ||type==IL_BYTE )MixRGBA<uint8 >((uint8 *)data,(uint8 *)alpha,size);else
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if(type==IL_UNSIGNED_SHORT ||type==IL_SHORT||type==IL_HALF )MixRGBA<uint16>((uint16 *)data,(uint16 *)alpha,size);else
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if(type==IL_UNSIGNED_INT ||type==IL_INT ||type==IL_FLOAT)MixRGBA<uint32>((uint32 *)data,(uint32 *)alpha,size);else
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if(type==IL_DOUBLE )MixRGBA<uint64>((uint64 *)data,(uint64 *)alpha,size);else
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return(nullptr);
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return data;
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} |