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57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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#pragma once
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#include <ImageProcessing/PixelFormats.h>
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#include <ImageProcessing/ImageObject.h>
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namespace ImageProcessing
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{
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class ICompressor;
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typedef AZStd::shared_ptr<ICompressor> ICompressorPtr;
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//the interface base class for any compressors which can decompress/compress image with compressed pixel format
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class ICompressor
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{
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public:
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enum EQuality
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{
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eQuality_Preview, // for the 256x256 preview only
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eQuality_Fast,
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eQuality_Normal,
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eQuality_Slow,
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};
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//some extra information required for different compressors.
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//keep is a simple structure for now.
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struct CompressOption
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{
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EQuality compressQuality = eQuality_Normal;
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//required for CTSquisher
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AZ::Vector3 rgbWeight = AZ::Vector3(0.3333f, 0.3334f, 0.3333f);
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};
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public:
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//compress the source image to desired compressed pixel format
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virtual IImageObjectPtr CompressImage(IImageObjectPtr srcImage, EPixelFormat fmtDst, const CompressOption *compressOption) = 0;
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virtual IImageObjectPtr DecompressImage(IImageObjectPtr srcImage, EPixelFormat fmtDst) = 0;
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virtual EPixelFormat GetSuggestedUncompressedFormat(EPixelFormat compressedfmt, EPixelFormat uncompressedfmt) = 0;
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//find compressor for specified compressed pixel format. isCompressing to indicate if it's for compressing or decompressing
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static ICompressorPtr FindCompressor(EPixelFormat fmt, bool isCompressing);
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virtual ~ICompressor() = 0;
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};
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} // namespace ImageProcessing
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