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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkMipMap_DEFINED | 8 #ifndef SkMipMap_DEFINED |
9 #define SkMipMap_DEFINED | 9 #define SkMipMap_DEFINED |
10 | 10 |
11 #include "SkCachedData.h" | 11 #include "SkCachedData.h" |
12 #include "SkPixmap.h" | 12 #include "SkPixmap.h" |
13 #include "SkScalar.h" | 13 #include "SkScalar.h" |
| 14 #include "SkSize.h" |
14 | 15 |
15 class SkBitmap; | 16 class SkBitmap; |
16 class SkDiscardableMemory; | 17 class SkDiscardableMemory; |
17 | 18 |
18 typedef SkDiscardableMemory* (*SkDiscardableFactoryProc)(size_t bytes); | 19 typedef SkDiscardableMemory* (*SkDiscardableFactoryProc)(size_t bytes); |
19 | 20 |
20 class SkMipMap : public SkCachedData { | 21 class SkMipMap : public SkCachedData { |
21 public: | 22 public: |
22 static SkMipMap* Build(const SkPixmap& src, SkDiscardableFactoryProc); | 23 static SkMipMap* Build(const SkPixmap& src, SkDiscardableFactoryProc); |
23 static SkMipMap* Build(const SkBitmap& src, SkDiscardableFactoryProc); | 24 static SkMipMap* Build(const SkBitmap& src, SkDiscardableFactoryProc); |
24 | 25 |
25 struct Level { | 26 struct Level { |
26 SkPixmap fPixmap; | 27 SkPixmap fPixmap; |
27 float fScale; // < 1.0 | 28 SkSize fScale; // < 1.0 |
28 }; | 29 }; |
29 | 30 |
30 bool extractLevel(SkScalar scale, Level*) const; | 31 bool extractLevel(SkScalar scale, Level*) const; |
31 | 32 |
32 protected: | 33 protected: |
33 void onDataChange(void* oldData, void* newData) override { | 34 void onDataChange(void* oldData, void* newData) override { |
34 fLevels = (Level*)newData; // could be nullptr | 35 fLevels = (Level*)newData; // could be nullptr |
35 } | 36 } |
36 | 37 |
37 private: | 38 private: |
38 Level* fLevels; | 39 Level* fLevels; |
39 int fCount; | 40 int fCount; |
40 | 41 |
41 // we take ownership of levels, and will free it with sk_free() | 42 // we take ownership of levels, and will free it with sk_free() |
42 SkMipMap(void* malloc, size_t size) : INHERITED(malloc, size) {} | 43 SkMipMap(void* malloc, size_t size) : INHERITED(malloc, size) {} |
43 SkMipMap(size_t size, SkDiscardableMemory* dm) : INHERITED(size, dm) {} | 44 SkMipMap(size_t size, SkDiscardableMemory* dm) : INHERITED(size, dm) {} |
44 | 45 |
45 static size_t AllocLevelsSize(int levelCount, size_t pixelSize); | 46 static size_t AllocLevelsSize(int levelCount, size_t pixelSize); |
46 | 47 |
47 typedef SkCachedData INHERITED; | 48 typedef SkCachedData INHERITED; |
48 }; | 49 }; |
49 | 50 |
50 #endif | 51 #endif |
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