| 1 | /* |
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| 2 | ----------------------------------------------------------------------------- |
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| 3 | This source file is part of OGRE |
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| 4 | (Object-oriented Graphics Rendering Engine) |
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| 5 | For the latest info, see http://www.ogre3d.org/ |
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| 6 | |
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| 7 | Copyright (c) 2000-2013 Torus Knot Software Ltd |
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| 8 | |
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| 9 | Permission is hereby granted, free of charge, to any person obtaining a copy |
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| 10 | of this software and associated documentation files (the "Software"), to deal |
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| 11 | in the Software without restriction, including without limitation the rights |
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| 12 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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| 13 | copies of the Software, and to permit persons to whom the Software is |
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| 14 | furnished to do so, subject to the following conditions: |
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| 15 | |
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| 16 | The above copyright notice and this permission notice shall be included in |
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| 17 | all copies or substantial portions of the Software. |
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| 18 | |
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| 19 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 20 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 21 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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| 22 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 23 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 24 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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| 25 | THE SOFTWARE. |
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| 26 | ----------------------------------------------------------------------------- |
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| 27 | */ |
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| 28 | #ifndef __OgreDDSCodec_H__ |
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| 29 | #define __OgreDDSCodec_H__ |
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| 30 | |
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| 31 | #include "OgreImageCodec.h" |
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| 32 | namespace Ogre { |
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| 33 | /** \addtogroup Core |
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| 34 | * @{ |
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| 35 | */ |
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| 36 | /** \addtogroup Image |
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| 37 | * @{ |
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| 38 | */ |
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| 39 | |
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| 40 | // Forward declarations |
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| 41 | struct DXTColourBlock; |
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| 42 | struct DXTExplicitAlphaBlock; |
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| 43 | struct DXTInterpolatedAlphaBlock; |
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| 44 | |
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| 45 | /** Codec specialized in loading DDS (Direct Draw Surface) images. |
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| 46 | @remarks |
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| 47 | We implement our own codec here since we need to be able to keep DXT |
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| 48 | data compressed if the card supports it. |
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| 49 | */ |
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| 50 | class _OgreExport DDSCodec : public ImageCodec |
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| 51 | { |
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| 52 | private: |
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| 53 | String mType; |
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| 54 | |
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| 55 | void flipEndian(void * pData, size_t size, size_t count) const; |
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| 56 | void flipEndian(void * pData, size_t size) const; |
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| 57 | |
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| 58 | PixelFormat convertFourCCFormat(uint32 fourcc) const; |
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| 59 | PixelFormat convertDXToOgreFormat(uint32 fourcc) const; |
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| 60 | PixelFormat convertPixelFormat(uint32 rgbBits, uint32 rMask, |
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| 61 | uint32 gMask, uint32 bMask, uint32 aMask) const; |
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| 62 | |
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| 63 | /// Unpack DXT colours into array of 16 colour values |
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| 64 | void unpackDXTColour(PixelFormat pf, const DXTColourBlock& block, ColourValue* pCol) const; |
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| 65 | /// Unpack DXT alphas into array of 16 colour values |
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| 66 | void unpackDXTAlpha(const DXTExplicitAlphaBlock& block, ColourValue* pCol) const; |
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| 67 | /// Unpack DXT alphas into array of 16 colour values |
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| 68 | void unpackDXTAlpha(const DXTInterpolatedAlphaBlock& block, ColourValue* pCol) const; |
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| 69 | |
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| 70 | /// Single registered codec instance |
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| 71 | static DDSCodec* msInstance; |
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| 72 | public: |
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| 73 | DDSCodec(); |
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| 74 | virtual ~DDSCodec() { } |
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| 75 | |
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| 76 | /// @copydoc Codec::encode |
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| 77 | DataStreamPtr encode(MemoryDataStreamPtr& input, CodecDataPtr& pData) const; |
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| 78 | /// @copydoc Codec::encodeToFile |
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| 79 | void encodeToFile(MemoryDataStreamPtr& input, const String& outFileName, CodecDataPtr& pData) const; |
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| 80 | /// @copydoc Codec::decode |
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| 81 | DecodeResult decode(DataStreamPtr& input) const; |
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| 82 | /// @copydoc Codec::magicNumberToFileExt |
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| 83 | String magicNumberToFileExt(const char *magicNumberPtr, size_t maxbytes) const; |
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| 84 | |
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| 85 | virtual String getType() const; |
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| 86 | |
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| 87 | /// Static method to startup and register the DDS codec |
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| 88 | static void startup(void); |
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| 89 | /// Static method to shutdown and unregister the DDS codec |
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| 90 | static void shutdown(void); |
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| 91 | |
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| 92 | }; |
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| 93 | /** @} */ |
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| 94 | /** @} */ |
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| 95 | |
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| 96 | } // namespace |
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| 97 | |
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| 98 | #endif |
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| 99 | |
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