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/* ScummVM - Graphic Adventure Engine
*
* 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 3 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef STARK_FORMATS_DDS_H
#define STARK_FORMATS_DDS_H
#include "common/array.h"
#include "common/stream.h"
#include "graphics/surface.h"
namespace Stark {
namespace Formats {
// Based on xoreos' DDS code
/**
* DDS texture
*
* Only a very small subset of DDS features are supported. Especially,
* compressed formats are not supported. This class is meant to
* load a single DDS file per instance.
*/
class DDS {
public:
~DDS();
typedef Common::Array<Graphics::Surface> MipMaps;
/** Load a DDS texture from a stream */
bool load(Common::SeekableReadStream &dds, const Common::String &name);
/**
* Retrieve the mip map levels for a loaded texture
*
* The first mipmap is the full size image. Each further
* mipmap divides by two the with and the height of the
* previous one.
*/
const MipMaps &getMipMaps() const;
private:
/** The specific pixel format of the included image data. */
struct DDSPixelFormat {
/** The size of the image data in bytes */
uint32 size;
/** Features of the image data */
uint32 flags;
/** The FourCC to detect the format by */
uint32 fourCC;
/** Number of bits per pixel */
uint32 bitCount;
/** Bit mask for the red color component */
uint32 rBitMask;
/** Bit mask for the green color component */
uint32 gBitMask;
/** Bit mask for the blue color component */
uint32 bBitMask;
/** Bit mask for the alpha component */
uint32 aBitMask;
};
bool readHeader(Common::SeekableReadStream &dds);
bool readData(Common::SeekableReadStream &dds);
bool detectFormat(const DDSPixelFormat &format);
MipMaps _mipmaps;
Graphics::PixelFormat _format;
Common::String _name;
};
} // End of namespace Formats
} // End of namespace Stark
#endif // STARK_FORMATS_DDS_H
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