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1 /* | |
2 * Copyright 2013 The Android Open Source Project | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 #ifndef SkBicubicImageFilter_DEFINED | |
9 #define SkBicubicImageFilter_DEFINED | |
10 | |
11 #include "SkImageFilter.h" | |
12 #include "SkScalar.h" | |
13 #include "SkSize.h" | |
14 #include "SkPoint.h" | |
15 | |
16 /*! \class SkBicubicImageFilter | |
17 Bicubic resampling image filter. This filter does a 16-tap bicubic | |
18 filter using the given matrix. | |
19 */ | |
20 | |
21 class SK_API SkBicubicImageFilter : public SkImageFilter { | |
22 public: | |
23 virtual ~SkBicubicImageFilter(); | |
24 | |
25 static SkBicubicImageFilter* CreateMitchell(const SkSize& scale, SkImageFilt
er* input = NULL); | |
26 | |
27 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBicubicImageFilter) | |
28 | |
29 protected: | |
30 /** Construct a (scaling-only) bicubic resampling image filter. | |
31 @param scale How much to scale the image. | |
32 @param coefficients The 16 coefficients of the bicubic matrix. | |
33 @param input The input image filter. If NULL, the src bitmap | |
34 passed to filterImage() is used instead. | |
35 */ | |
36 SkBicubicImageFilter(const SkSize& scale, const SkScalar coefficients[16], | |
37 SkImageFilter* input = NULL); | |
38 SkBicubicImageFilter(SkReadBuffer& buffer); | |
39 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; | |
40 | |
41 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, | |
42 SkBitmap* result, SkIPoint* loc) const SK_OVERRID
E; | |
43 | |
44 #if SK_SUPPORT_GPU | |
45 virtual bool canFilterImageGPU() const SK_OVERRIDE { return true; } | |
46 virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context
& ctx, | |
47 SkBitmap* result, SkIPoint* offset) const SK_OVE
RRIDE; | |
48 #endif | |
49 | |
50 private: | |
51 SkSize fScale; | |
52 SkScalar fCoefficients[16]; | |
53 typedef SkImageFilter INHERITED; | |
54 }; | |
55 | |
56 #endif | |
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