f758311c73
Relanding https://skia-review.googlesource.com/c/14105/ in pieces to try to diagnose problems with the Chrome roll. Bug: skia:6535 Change-Id: Iada034fc41ef315f7f00984d8de9d9cc2f361ad2 Reviewed-on: https://skia-review.googlesource.com/14657 Commit-Queue: Matt Sarett <msarett@google.com> Reviewed-by: Mike Reed <reed@google.com>
99 lines
3.6 KiB
C++
99 lines
3.6 KiB
C++
/*
|
|
* Copyright 2008 The Android Open Source Project
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
|
|
#ifndef SkMallocPixelRef_DEFINED
|
|
#define SkMallocPixelRef_DEFINED
|
|
|
|
#include "SkPixelRef.h"
|
|
|
|
/** We explicitly use the same allocator for our pixels that SkMask does,
|
|
so that we can freely assign memory allocated by one class to the other.
|
|
*/
|
|
class SK_API SkMallocPixelRef : public SkPixelRef {
|
|
public:
|
|
/**
|
|
* Return a new SkMallocPixelRef with the provided pixel storage, rowBytes,
|
|
* and optional colortable. The caller is responsible for managing the
|
|
* lifetime of the pixel storage buffer, as this pixelref will not try
|
|
* to delete it.
|
|
*
|
|
* Returns NULL on failure.
|
|
*/
|
|
static sk_sp<SkPixelRef> MakeDirect(const SkImageInfo&, void* addr,
|
|
size_t rowBytes, sk_sp<SkColorTable>);
|
|
|
|
/**
|
|
* Return a new SkMallocPixelRef, automatically allocating storage for the
|
|
* pixels. If rowBytes are 0, an optimal value will be chosen automatically.
|
|
* If rowBytes is > 0, then it will be respected, or NULL will be returned
|
|
* if rowBytes is invalid for the specified info.
|
|
*
|
|
* This pixelref will ref() the specified colortable (if not NULL).
|
|
*
|
|
* Returns NULL on failure.
|
|
*/
|
|
static sk_sp<SkPixelRef> MakeAllocate(const SkImageInfo&, size_t rowBytes, sk_sp<SkColorTable>);
|
|
|
|
/**
|
|
* Identical to MakeAllocate, except all pixel bytes are zeroed.
|
|
*/
|
|
static sk_sp<SkPixelRef> MakeZeroed(const SkImageInfo&, size_t rowBytes, sk_sp<SkColorTable>);
|
|
|
|
/**
|
|
* Return a new SkMallocPixelRef with the provided pixel storage,
|
|
* rowBytes, and optional colortable. On destruction, ReleaseProc
|
|
* will be called.
|
|
*
|
|
* If ReleaseProc is NULL, the pixels will never be released. This
|
|
* can be useful if the pixels were stack allocated. However, such an
|
|
* SkMallocPixelRef must not live beyond its pixels (e.g. by copying
|
|
* an SkBitmap pointing to it, or drawing to an SkPicture).
|
|
*
|
|
* Returns NULL on failure.
|
|
*/
|
|
typedef void (*ReleaseProc)(void* addr, void* context);
|
|
static sk_sp<SkPixelRef> MakeWithProc(const SkImageInfo& info,
|
|
size_t rowBytes, sk_sp<SkColorTable>,
|
|
void* addr, ReleaseProc proc,
|
|
void* context);
|
|
|
|
/**
|
|
* Return a new SkMallocPixelRef that will use the provided
|
|
* SkData, rowBytes, and optional colortable as pixel storage.
|
|
* The SkData will be ref()ed and on destruction of the PielRef,
|
|
* the SkData will be unref()ed.
|
|
*
|
|
* Returns NULL on failure.
|
|
*/
|
|
static sk_sp<SkPixelRef> MakeWithData(const SkImageInfo& info,
|
|
size_t rowBytes,
|
|
sk_sp<SkColorTable>,
|
|
sk_sp<SkData> data);
|
|
|
|
protected:
|
|
~SkMallocPixelRef() override;
|
|
|
|
private:
|
|
// Uses alloc to implement NewAllocate or NewZeroed.
|
|
static sk_sp<SkPixelRef> MakeUsing(void*(*alloc)(size_t),
|
|
const SkImageInfo&,
|
|
size_t rowBytes,
|
|
sk_sp<SkColorTable>);
|
|
|
|
ReleaseProc fReleaseProc;
|
|
void* fReleaseProcContext;
|
|
|
|
SkMallocPixelRef(const SkImageInfo&, void* addr, size_t rb, sk_sp<SkColorTable>,
|
|
ReleaseProc proc, void* context);
|
|
|
|
typedef SkPixelRef INHERITED;
|
|
};
|
|
|
|
|
|
#endif
|