2012-04-19 14:35:52 +08:00
|
|
|
/*
|
|
|
|
* Copyright (C) 2008 The Android Open Source Project
|
|
|
|
*
|
|
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
|
* you may not use this file except in compliance with the License.
|
|
|
|
* You may obtain a copy of the License at
|
|
|
|
*
|
|
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
*
|
|
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
|
* See the License for the specific language governing permissions and
|
|
|
|
* limitations under the License.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#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 SkMallocPixelRef : public SkPixelRef {
|
|
|
|
public:
|
|
|
|
/** Allocate the specified buffer for pixels. The memory is freed when the
|
|
|
|
last owner of this pixelref is gone. If addr is NULL, sk_malloc_throw()
|
|
|
|
is called to allocate it.
|
|
|
|
*/
|
|
|
|
SkMallocPixelRef(void* addr, size_t size, SkColorTable* ctable);
|
|
|
|
virtual ~SkMallocPixelRef();
|
|
|
|
|
|
|
|
//! Return the allocation size for the pixels
|
|
|
|
size_t getSize() const { return fSize; }
|
|
|
|
void* getAddr() const { return fStorage; }
|
|
|
|
|
|
|
|
// overrides from SkPixelRef
|
|
|
|
virtual void flatten(SkFlattenableWriteBuffer&) const;
|
|
|
|
virtual Factory getFactory() const {
|
|
|
|
return Create;
|
|
|
|
}
|
|
|
|
static SkPixelRef* Create(SkFlattenableReadBuffer& buffer) {
|
|
|
|
return SkNEW_ARGS(SkMallocPixelRef, (buffer));
|
|
|
|
}
|
|
|
|
|
|
|
|
protected:
|
|
|
|
// overrides from SkPixelRef
|
|
|
|
virtual void* onLockPixels(SkColorTable**);
|
|
|
|
virtual void onUnlockPixels();
|
|
|
|
|
|
|
|
SkMallocPixelRef(SkFlattenableReadBuffer& buffer);
|
|
|
|
|
|
|
|
private:
|
|
|
|
void* fStorage;
|
|
|
|
size_t fSize;
|
|
|
|
SkColorTable* fCTable;
|
|
|
|
|
|
|
|
typedef SkPixelRef INHERITED;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
#endif
|