57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
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/*
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* Copyright 2017 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 SkPngEncoder_DEFINED
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#define SkPngEncoder_DEFINED
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#include "SkEncoder.h"
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class SkPngEncoderMgr;
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class SkWStream;
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class SkPngEncoder : public SkEncoder {
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public:
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// TODO (skbug.com/6409):
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// Add options for png filters and zlib compression.
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struct Options {
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SkTransferFunctionBehavior fUnpremulBehavior = SkTransferFunctionBehavior::kRespect;
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};
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/**
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* Encode the |src| pixels to the |dst| stream.
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* |options| may be used to control the encoding behavior.
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*
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* Returns true on success. Returns false on an invalid or unsupported |src|.
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*/
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static bool Encode(SkWStream* dst, const SkPixmap& src, const Options& options);
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/**
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* Create a png encoder that will encode the |src| pixels to the |dst| stream.
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* |options| may be used to control the encoding behavior.
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*
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* |dst| is unowned but must remain valid for the lifetime of the object.
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*
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* This returns nullptr on an invalid or unsupported |src|.
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*/
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static std::unique_ptr<SkPngEncoder> Make(SkWStream* dst, const SkPixmap& src,
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const Options& options);
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~SkPngEncoder() override;
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protected:
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bool onEncodeRows(int numRows) override;
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SkPngEncoder(std::unique_ptr<SkPngEncoderMgr>, const SkPixmap& src);
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std::unique_ptr<SkPngEncoderMgr> fEncoderMgr;
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typedef SkEncoder INHERITED;
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};
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#endif
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