1 /*
2 * Copyright 2021 Google Inc.
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 #include "include/core/SkImageFilter.h"
9 #include "include/core/SkPoint.h"
10 #include "include/core/SkRefCnt.h"
11 #include "include/core/SkScalar.h"
12 #include "include/core/SkSize.h"
13 #include "include/core/SkTileMode.h"
14 #include "include/effects/SkImageFilters.h"
15 #include "modules/skottie/src/Adapter.h"
16 #include "modules/skottie/src/SkottiePriv.h"
17 #include "modules/skottie/src/SkottieValue.h"
18 #include "modules/skottie/src/effects/Effects.h"
19 #include "modules/sksg/include/SkSGRenderEffect.h"
20 #include "modules/sksg/include/SkSGRenderNode.h"
21
22 #include <cstddef>
23 #include <utility>
24
25 namespace skjson {
26 class ArrayValue;
27 }
28
29 namespace skottie::internal {
30
31 namespace {
32
33 class SharpenAdapter final : public DiscardableAdapterBase<SharpenAdapter,
34 sksg::ExternalImageFilter> {
35 public:
SharpenAdapter(const skjson::ArrayValue & jprops,const AnimationBuilder & abuilder)36 SharpenAdapter(const skjson::ArrayValue& jprops,
37 const AnimationBuilder& abuilder)
38 : INHERITED(sksg::ExternalImageFilter::Make())
39 {
40 enum : size_t {
41 kSharpenAmount_Index = 0,
42 };
43
44 EffectBinder(jprops, abuilder, this).bind(kSharpenAmount_Index, fAmount);
45 }
46 private:
onSync()47 void onSync() override {
48 SkScalar intensity = 1 + (fAmount * 0.01);
49 SkScalar discount = (1 - intensity) / 8.0;
50 SkScalar kernel[9] = {
51 discount, discount, discount,
52 discount, intensity, discount,
53 discount, discount, discount,
54 };
55 auto filter = SkImageFilters::MatrixConvolution(SkISize::Make(3,3), kernel, 1, 0,
56 SkIPoint::Make(1,1), SkTileMode::kRepeat,
57 true, nullptr);
58 this->node()->setImageFilter(std::move(filter));
59 }
60
61 ScalarValue fAmount = 0;
62
63 using INHERITED = DiscardableAdapterBase<SharpenAdapter, sksg::ExternalImageFilter>;
64 };
65
66 } // namespace
67
attachSharpenEffect(const skjson::ArrayValue & jprops,sk_sp<sksg::RenderNode> layer) const68 sk_sp<sksg::RenderNode> EffectBuilder::attachSharpenEffect(const skjson::ArrayValue& jprops,
69 sk_sp<sksg::RenderNode> layer) const {
70 auto imageFilterNode = fBuilder->attachDiscardableAdapter<SharpenAdapter>(jprops,
71 *fBuilder);
72 return sksg::ImageFilterEffect::Make(std::move(layer), std::move(imageFilterNode));
73 }
74
75 } // namespace skottie::internal
76