tga.h

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
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 * can be found in the AUTHORS file distributed with this source
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 * xoreos is free software; you can redistribute it and/or
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/* Based on ScummVM (<http://scummvm.org>) code, which is released
 * under the terms of version 2 or later of the GNU General Public
 * License.
 *
 * The original copyright note in ScummVM reads as follows:
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
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 */

#ifndef GRAPHICS_IMAGES_TGA_H
#define GRAPHICS_IMAGES_TGA_H

#include "src/graphics/images/decoder.h"

namespace Common {
    class SeekableReadStream;
}

namespace Graphics {

class TGA : public ImageDecoder {
public:
    TGA(Common::SeekableReadStream &tga, bool cubeMap = false);
    ~TGA();

private:
    // Format-spec from http://www.ludorg.net/amnesia/TGA_File_Format_Spec.html
    enum ImageType {
        kImageTypeCMap         =  1,
        kImageTypeTrueColor    =  2,
        kImageTypeBW           =  3,
        kImageTypeRLECMap      =  9,
        kImageTypeRLETrueColor = 10,
        kImageTypeRLEBW        = 11
    };

    // Loading helpers
    void load(Common::SeekableReadStream &tga);
    void readHeader(Common::SeekableReadStream &tga, ImageType &imageType, byte &pixelDepth, byte &imageDesc);
    void readData(Common::SeekableReadStream &tga, ImageType imageType, byte pixelDepth, byte imageDesc);
    void readRLE(Common::SeekableReadStream &tga, byte pixelDepth, size_t layer);

    bool isSupportedImageType(ImageType type) const;
};

} // End of namespace Graphics

#endif // GRAPHICS_IMAGES_TGA_H