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100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef STARK_FORMATS_DDS_H
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#define STARK_FORMATS_DDS_H
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#include "common/array.h"
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#include "common/stream.h"
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#include "graphics/surface.h"
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namespace Stark {
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namespace Formats {
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// Based on xoreos' DDS code
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/**
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* DDS texture
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*
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* Only a very small subset of DDS features are supported. Especially,
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* compressed formats are not supported. This class is meant to
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* load a single DDS file per instance.
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*/
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class DDS {
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public:
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~DDS();
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typedef Common::Array<Graphics::Surface> MipMaps;
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/** Load a DDS texture from a stream */
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bool load(Common::SeekableReadStream &dds, const Common::String &name);
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/**
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* Retrieve the mip map levels for a loaded texture
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*
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* The first mipmap is the full size image. Each further
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* mipmap divides by two the with and the height of the
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* previous one.
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*/
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const MipMaps &getMipMaps() const;
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private:
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/** The specific pixel format of the included image data. */
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struct DDSPixelFormat {
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/** The size of the image data in bytes */
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uint32 size;
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/** Features of the image data */
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uint32 flags;
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/** The FourCC to detect the format by */
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uint32 fourCC;
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/** Number of bits per pixel */
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uint32 bitCount;
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/** Bit mask for the red color component */
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uint32 rBitMask;
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/** Bit mask for the green color component */
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uint32 gBitMask;
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/** Bit mask for the blue color component */
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uint32 bBitMask;
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/** Bit mask for the alpha component */
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uint32 aBitMask;
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};
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bool readHeader(Common::SeekableReadStream &dds);
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bool readData(Common::SeekableReadStream &dds);
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bool detectFormat(const DDSPixelFormat &format);
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MipMaps _mipmaps;
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Graphics::PixelFormat _format;
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Common::String _name;
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};
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} // End of namespace Formats
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} // End of namespace Stark
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#endif // STARK_FORMATS_DDS_H
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