43 lines
1.5 KiB
C
43 lines
1.5 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 SkSharingProc_DEFINED
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#define SkSharingProc_DEFINED
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#include <unordered_map>
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#include <vector>
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#include "include/core/SkData.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkSerialProcs.h"
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struct SkSharingSerialContext {
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// A map from the ids from SkImage::uniqueID() to ids used within the file
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std::unordered_map<uint32_t, uint32_t> fImageMap;
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// A serial proc that shares images between subpictures
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// To use this, create an instance of SkSerialProcs and populate it this way.
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// The client must retain ownership of the context.
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// auto ctx = std::make_unique<SkSharingSerialContext>()
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// SkSerialProcs procs;
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// procs.fImageProc = SkSharingSerialContext::serializeImage;
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// procs.fImageCtx = ctx.get();
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static sk_sp<SkData> serializeImage(SkImage* img, void* ctx);
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};
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struct SkSharingDeserialContext {
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// a list of unique images in the order they were encountered in the file
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// Subsequent occurrences of an image refer to it by it's index in this list.
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std::vector<sk_sp<SkImage>> fImages;
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// A deserial proc that can interpret id's in place of images as references to previous images.
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// Can also deserialize a SKP where all images are inlined (it's backwards compatible)
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static sk_sp<SkImage> deserializeImage(const void* data, size_t length, void* ctx);
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};
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#endif
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