blob: e22c0a2181a9c0fcb41d8c857037570c6d8bc7d7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkMipMap_DEFINED
#define SkMipMap_DEFINED
#include "SkCachedData.h"
#include "SkScalar.h"
class SkBitmap;
class SkDiscardableMemory;
typedef SkDiscardableMemory* (*SkDiscardableFactoryProc)(size_t bytes);
class SkMipMap : public SkCachedData {
public:
static SkMipMap* Build(const SkBitmap& src, SkDiscardableFactoryProc);
struct Level {
void* fPixels;
uint32_t fRowBytes;
uint32_t fWidth, fHeight;
float fScale; // < 1.0
};
bool extractLevel(SkScalar scale, Level*) const;
protected:
void onDataChange(void* oldData, void* newData) override {
fLevels = (Level*)newData; // could be NULL
}
private:
Level* fLevels;
int fCount;
// we take ownership of levels, and will free it with sk_free()
SkMipMap(void* malloc, size_t size) : INHERITED(malloc, size) {}
SkMipMap(size_t size, SkDiscardableMemory* dm) : INHERITED(size, dm) {}
static size_t AllocLevelsSize(int levelCount, size_t pixelSize);
typedef SkCachedData INHERITED;
};
#endif
|
