skia2/src/core/SkPipe.h

/*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkPipe_DEFINED
#define SkPipe_DEFINED

#include "SkTypes.h"

class SkCanvas;
class SkImage;
class SkPicture;
class SkTypefaceSerializer;
class SkTypefaceDeserializer;
class SkWStream;

class SkPipeSerializer {
public:
    SkPipeSerializer();
    ~SkPipeSerializer();

    // Ownership is not transferred, so caller must ceep the serializer alive
    void setTypefaceSerializer(SkTypefaceSerializer*);

    void resetCache();

    void write(SkPicture*, SkWStream*);
    void write(SkImage*, SkWStream*);

    SkCanvas* beginWrite(const SkRect& cullBounds, SkWStream*);
    void endWrite();

private:
    class Impl;
    std::unique_ptr<Impl> fImpl;
};

class SkPipeDeserializer {
public:
    SkPipeDeserializer();
    ~SkPipeDeserializer();

    // Ownership is not transferred, so caller must ceep the deserializer alive
    void setTypefaceDeserializer(SkTypefaceDeserializer*);

    sk_sp<SkPicture> readPicture(const void*, size_t);
    sk_sp<SkImage> readImage(const void*, size_t);
    bool playback(const void*, size_t, SkCanvas*);

private:
    class Impl;
    std::unique_ptr<Impl> fImpl;
};

//////////////////////////////////////////////////////////////////////////////////////////////////

class SkTypefaceSerializer {
public:
    virtual ~SkTypefaceSerializer() {}

    virtual sk_sp<SkData> serialize(SkTypeface*) = 0;
};

class SkTypefaceDeserializer {
public:
    virtual ~SkTypefaceDeserializer() {}

    virtual sk_sp<SkTypeface> deserialize(const void* data, size_t size) = 0;
};

#endif