/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2009 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/
#include <OgreStableHeaders.h>

#include <OgreImage.h>
#include <OgreCodec.h>
#include <OgreException.h>
#include <OgreLogManager.h>
#include <OgreStringConverter.h>
#include "OgreILImageCodec.h"
#include "OgreILCodecs.h"

#include <IL/il.h>
#include <IL/ilu.h>

namespace Ogre {
    std::list<ILImageCodec*> ILCodecs::codeclist;

	// Return IL type for a certain extension
	ILenum ogreIlTypeFromExt(const String &ext)
	{
#ifdef IL_TGA
		if (ext=="tga" || ext=="vda" ||
			ext=="icb" || ext=="vst")
			return IL_TGA;
#endif
#ifdef IL_JPG
		if (ext=="jpg" || ext=="jpe" || ext=="jpeg")
			return IL_JPG;
#endif
/*#ifdef IL_DDS
		if (ext=="dds")
			return IL_DDS;
#endif*/
#ifdef IL_PNG
		if (ext=="png")
			return IL_PNG;
#endif
#ifdef IL_BMP
		if (ext=="bmp" || ext=="dib")
			return IL_BMP;
#endif
#ifdef IL_GIF
		if (ext=="gif")
			return IL_GIF;
#endif
#ifdef IL_CUT
		if (ext=="cut")
			return IL_CUT;
#endif
#ifdef IL_HDR
		if (ext=="hdr")
			return IL_HDR;
#endif
#ifdef IL_ICO
		if (ext=="ico" || ext=="cur")
			return IL_ICO;
#endif
#ifdef IL_JNG
		if (ext=="jng")
			return IL_JNG;
#endif
#ifdef IL_LIF
		if (ext=="lif")
			return IL_LIF;
#endif
#ifdef IL_MDL
		if (ext=="mdl")
			return IL_MDL;
#endif
#ifdef IL_MNG
		if (ext=="mng" || ext=="jng")
			return IL_MNG;
#endif
#ifdef IL_PCD
		if (ext=="pcd")
			return IL_PCD;
#endif
#ifdef IL_PCX
		if (ext=="pcx")
			return IL_PCX;
#endif
#ifdef IL_PIC
		if (ext=="pic")
			return IL_PIC;
#endif
#ifdef IL_PIX
		if (ext=="pix")
			return IL_PIX;
#endif
#ifdef IL_PNM
		if (ext=="pbm" || ext=="pgm" ||
			ext=="pnm" || ext=="ppm")
			return IL_PNM;
#endif
#ifdef IL_PSD
		if (ext=="psd" || ext=="pdd")
			return IL_PSD;
#endif
#ifdef IL_PSP
		if (ext=="psp")
			return IL_PSP;
#endif
#ifdef IL_PXR
		if (ext=="pxr")
			return IL_PXR;
#endif
#ifdef IL_SGI
		if (ext=="sgi" || ext=="bw" ||
			ext=="rgb" || ext=="rgba")
			return IL_SGI;
#endif
#ifdef IL_TIF
		if (ext=="tif" || ext=="tiff")
			return IL_TIF;
#endif
#ifdef IL_WAL
		if (ext=="wal")
			return IL_WAL;
#endif
#ifdef IL_XPM
		if (ext=="xpm")
			return IL_XPM;
#endif
	
		return IL_TYPE_UNKNOWN;
	}

	
    void ILCodecs::registerCodecs(void) {
		const char *il_version = ilGetString ( IL_VERSION_NUM );
		if( ilGetError() != IL_NO_ERROR )
		{
			// IL defined the version number as IL_VERSION in older versions, so we have to scan for it
			for(int ver=150; ver<170; ver++)
			{
				il_version = ilGetString ( ver ); 
				if(ilGetError() == IL_NO_ERROR)
					break;
				else
					il_version = "Unknown";
			}
		}
		LogManager::getSingleton().logMessage(
         LML_NORMAL,
            "DevIL version: " + String(il_version));
        const char *il_extensions = ilGetString ( IL_LOAD_EXT );
		if( ilGetError() != IL_NO_ERROR )
			il_extensions = "";
        
        std::stringstream ext;
        String str, all;
        ext << il_extensions;
        while(ext >> str)
        {
#if 0
			String fileName = "dummy." + str;
			// DevIL doesn't export this under windows -- how weird
			int ilType = ilTypeFromext(const_cast<char*>(fileName.c_str()));
#endif
			int ilType = ogreIlTypeFromExt(str);
            ILImageCodec *codec = new ILImageCodec(str, ilType);
            Codec::registerCodec(codec);
            codeclist.push_back(codec);
			//all += str+String("(")+StringConverter::toString(ilType)+String(") ");
			all += str+String(" ");
        }
		// Raw format, missing in image formats string
		ILImageCodec *cod = new ILImageCodec("raw", IL_RAW);
		Codec::registerCodec(cod);
		codeclist.push_back(cod);
		//all += String("raw")+"("+StringConverter::toString(IL_RAW)+String(") ");
		all += String("raw ");
		LogManager::getSingleton().logMessage(
         LML_NORMAL,
            "DevIL image formats: " + all);
    }

    void ILCodecs::deleteCodecs(void) {
        for(std::list<ILImageCodec*>::const_iterator i = codeclist.begin(); i != codeclist.end(); ++i)
        {
            Codec::unRegisterCodec(*i);   
            delete *i;
        }
        codeclist.clear();
    }

}