53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
/*
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* Copyright 2014 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 SkPixelSerializer_DEFINED
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#define SkPixelSerializer_DEFINED
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#include "SkRefCnt.h"
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class SkData;
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struct SkImageInfo;
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/**
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* Interface for serializing pixels, e.g. SkBitmaps in an SkPicture.
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*/
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class SkPixelSerializer : public SkRefCnt {
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public:
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virtual ~SkPixelSerializer() {}
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/**
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* Call to determine if the client wants to serialize the encoded data. If
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* false, serialize another version (e.g. the result of encodePixels).
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*/
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bool useEncodedData(const void* data, size_t len) {
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return this->onUseEncodedData(data, len);
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}
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/**
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* Call to get the client's version of encoding these pixels. If it
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* returns NULL, serialize the raw pixels.
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*/
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SkData* encodePixels(const SkImageInfo& info, const void* pixels, size_t rowBytes) {
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return this->onEncodePixels(info, pixels, rowBytes);
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}
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protected:
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/**
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* Return true if you want to serialize the encoded data, false if you want
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* another version serialized (e.g. the result of encodePixels).
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*/
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virtual bool onUseEncodedData(const void* data, size_t len) = 0;
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/**
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* If you want to encode these pixels, return the encoded data as an SkData
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* Return null if you want to serialize the raw pixels.
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*/
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virtual SkData* onEncodePixels(const SkImageInfo&, const void* pixels, size_t rowBytes) = 0;
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};
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#endif // SkPixelSerializer_DEFINED
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