110 lines
3.8 KiB
C++
110 lines
3.8 KiB
C++
/*
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* Copyright 2008 The Android Open Source Project
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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 SkMallocPixelRef_DEFINED
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#define SkMallocPixelRef_DEFINED
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#include "SkPixelRef.h"
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/** We explicitly use the same allocator for our pixels that SkMask does,
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so that we can freely assign memory allocated by one class to the other.
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*/
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class SK_API SkMallocPixelRef : public SkPixelRef {
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public:
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SK_DECLARE_INST_COUNT(SkMallocPixelRef)
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/**
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* Return a new SkMallocPixelRef with the provided pixel storage, rowBytes,
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* and optional colortable. The caller is responsible for managing the
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* lifetime of the pixel storage buffer, as this pixelref will not try
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* to delete it.
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*
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* The pixelref will ref() the colortable (if not NULL).
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*
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* Returns NULL on failure.
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*/
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static SkMallocPixelRef* NewDirect(const SkImageInfo&, void* addr,
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size_t rowBytes, SkColorTable*);
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/**
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* Return a new SkMallocPixelRef, automatically allocating storage for the
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* pixels. If rowBytes are 0, an optimal value will be chosen automatically.
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* If rowBytes is > 0, then it will be respected, or NULL will be returned
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* if rowBytes is invalid for the specified info.
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*
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* This pixelref will ref() the specified colortable (if not NULL).
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*
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* Returns NULL on failure.
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*/
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static SkMallocPixelRef* NewAllocate(const SkImageInfo& info,
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size_t rowBytes, SkColorTable*);
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/**
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* Return a new SkMallocPixelRef with the provided pixel storage,
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* rowBytes, and optional colortable. On destruction, ReleaseProc
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* will be called.
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*
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* This pixelref will ref() the specified colortable (if not NULL).
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*
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* Returns NULL on failure.
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*/
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typedef void (*ReleaseProc)(void* addr, void* context);
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static SkMallocPixelRef* NewWithProc(const SkImageInfo& info,
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size_t rowBytes, SkColorTable*,
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void* addr, ReleaseProc proc,
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void* context);
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/**
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* Return a new SkMallocPixelRef that will use the provided
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* SkData, rowBytes, and optional colortable as pixel storage.
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* The SkData will be ref()ed and on destruction of the PielRef,
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* the SkData will be unref()ed.
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*
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* This pixelref will ref() the specified colortable (if not NULL).
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*
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* Returns NULL on failure.
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*/
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static SkMallocPixelRef* NewWithData(const SkImageInfo& info,
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size_t rowBytes,
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SkColorTable* ctable,
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SkData* data);
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void* getAddr() const { return fStorage; }
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class PRFactory : public SkPixelRefFactory {
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public:
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virtual SkPixelRef* create(const SkImageInfo&,
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size_t rowBytes,
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SkColorTable*) SK_OVERRIDE;
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};
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protected:
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// The ownPixels version of this constructor is deprecated.
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SkMallocPixelRef(const SkImageInfo&, void* addr, size_t rb, SkColorTable*,
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bool ownPixels);
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virtual ~SkMallocPixelRef();
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virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
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virtual void onUnlockPixels() SK_OVERRIDE;
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virtual size_t getAllocatedSizeInBytes() const SK_OVERRIDE;
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private:
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void* fStorage;
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SkColorTable* fCTable;
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size_t fRB;
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ReleaseProc fReleaseProc;
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void* fReleaseProcContext;
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SkMallocPixelRef(const SkImageInfo&, void* addr, size_t rb, SkColorTable*,
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ReleaseProc proc, void* context);
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typedef SkPixelRef INHERITED;
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};
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#endif
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