55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
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/*
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* Copyright 2019 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef YUVUtils_DEFINED
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#define YUVUtils_DEFINED
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#include "SkAutoMalloc.h"
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#include "SkImage.h"
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#include "SkYUVAIndex.h"
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#include "SkYUVASizeInfo.h"
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class SkData;
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namespace sk_gpu_test {
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// Utility that decodes a JPEG but preserves the YUVA8 planes in the image, and uses
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// MakeFromYUVAPixmaps to create a GPU multiplane YUVA image for a context. It extracts the planar
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// data once, and lazily creates the actual SkImage when the GrContext is provided (and refreshes
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// the image if the context has changed, as in Viewer)
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class LazyYUVImage {
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public:
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// Returns null if the data could not be extracted into YUVA8 planes
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static std::unique_ptr<LazyYUVImage> Make(sk_sp<SkData> data);
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sk_sp<SkImage> refImage(GrContext* context);
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const SkImage* getImage(GrContext* context);
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private:
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// Decoded YUV data
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SkYUVASizeInfo fSizeInfo;
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SkYUVColorSpace fColorSpace;
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SkYUVAIndex fComponents[SkYUVAIndex::kIndexCount];
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SkAutoMalloc fPlaneData;
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SkPixmap fPlanes[SkYUVASizeInfo::kMaxCount];
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// Memoized SkImage formed with planes
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sk_sp<SkImage> fYUVImage;
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uint32_t fOwningContextID;
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LazyYUVImage() : fOwningContextID(SK_InvalidGenID) {}
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bool reset(sk_sp<SkData> data);
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bool ensureYUVImage(GrContext* context);
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};
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} // namespace sk_gpu_test
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#endif // YUVUtils_DEFINED
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