d07e4a226a
New behavior is to *always* call the client's deserial image proc for all data. This allows the client to make decisions even on "std" image data like PNG. The change also means that if there is no client deserial image proc, Skia will still attempt to create an image from the data, even if it was written by a custom serial proc. Bug: skia:7706 Change-Id: Ia58bdd10b86d497f02187082c6373c029e9c8293 Reviewed-on: https://skia-review.googlesource.com/113302 Reviewed-by: Florin Malita <fmalita@chromium.org> Reviewed-by: Leon Scroggins <scroggo@google.com> Commit-Queue: Mike Reed <reed@google.com>
74 lines
2.6 KiB
C
74 lines
2.6 KiB
C
/*
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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 SkSerialProcs_DEFINED
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#define SkSerialProcs_DEFINED
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#include "SkImage.h"
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#include "SkPicture.h"
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#include "SkTypeface.h"
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/**
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* A serial-proc is asked to serialize the specified object (e.g. picture or image).
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* If a data object is returned, it will be used (even if it is zero-length).
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* If null is returned, then Skia will take its default action.
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*
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* The default action for pictures is to use Skia's internal format.
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* The default action for images is to encode either in its native format or PNG.
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* The default action for typefaces is to use Skia's internal format.
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*/
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typedef sk_sp<SkData> (*SkSerialPictureProc)(SkPicture*, void* ctx);
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typedef sk_sp<SkData> (*SkSerialImageProc)(SkImage*, void* ctx);
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typedef sk_sp<SkData> (*SkSerialTypefaceProc)(SkTypeface*, void* ctx);
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/**
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* Called with the encoded form of a picture (previously written with a custom
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* SkSerialPictureProc proc). Return a picture object, or nullptr indicating failure.
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*/
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typedef sk_sp<SkPicture> (*SkDeserialPictureProc)(const void* data, size_t length, void* ctx);
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/**
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* Called with the encoded from of an image. The proc can return an image object, or if it
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* returns nullptr, then Skia will take its default action to try to create an image from the data.
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*
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* Note that unlike SkDeserialPictureProc and SkDeserialTypefaceProc, return nullptr from this
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* does not indicate failure, but is a signal for Skia to take its default action.
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*/
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typedef sk_sp<SkImage> (*SkDeserialImageProc)(const void* data, size_t length, void* ctx);
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/**
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* Called with the encoded form of a typeface (previously written with a custom
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* SkSerialTypefaceProc proc). Return a typeface object, or nullptr indicating failure.
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*/
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typedef sk_sp<SkTypeface> (*SkDeserialTypefaceProc)(const void* data, size_t length, void* ctx);
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struct SK_API SkSerialProcs {
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SkSerialPictureProc fPictureProc = nullptr;
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void* fPictureCtx = nullptr;
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SkSerialImageProc fImageProc = nullptr;
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void* fImageCtx = nullptr;
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SkSerialTypefaceProc fTypefaceProc = nullptr;
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void* fTypefaceCtx = nullptr;
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};
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struct SK_API SkDeserialProcs {
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SkDeserialPictureProc fPictureProc = nullptr;
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void* fPictureCtx = nullptr;
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SkDeserialImageProc fImageProc = nullptr;
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void* fImageCtx = nullptr;
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SkDeserialTypefaceProc fTypefaceProc = nullptr;
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void* fTypefaceCtx = nullptr;
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};
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#endif
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