Flutter Impeller
dl_image_impeller.cc
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
6 
9 
10 namespace impeller {
11 
12 #if FML_OS_IOS_SIMULATOR
13 sk_sp<DlImageImpeller> DlImageImpeller::Make(std::shared_ptr<Texture> texture,
14  OwningContext owning_context,
15  bool is_fake_image) {
16  if (!texture && !is_fake_image) {
17  return nullptr;
18  }
19  return sk_sp<DlImageImpeller>(
20  new DlImageImpeller(std::move(texture), owning_context, is_fake_image));
21 }
22 #else
23 sk_sp<DlImageImpeller> DlImageImpeller::Make(std::shared_ptr<Texture> texture,
24  OwningContext owning_context) {
25  if (!texture) {
26  return nullptr;
27  }
28  return sk_sp<DlImageImpeller>(
29  new DlImageImpeller(std::move(texture), owning_context));
30 }
31 #endif // FML_OS_IOS_SIMULATOR
32 
33 sk_sp<DlImageImpeller> DlImageImpeller::MakeFromYUVTextures(
34  AiksContext* aiks_context,
35  std::shared_ptr<Texture> y_texture,
36  std::shared_ptr<Texture> uv_texture,
37  YUVColorSpace yuv_color_space) {
38  if (!aiks_context || !y_texture || !uv_texture) {
39  return nullptr;
40  }
41  auto yuv_to_rgb_filter_contents = FilterContents::MakeYUVToRGBFilter(
42  std::move(y_texture), std::move(uv_texture), yuv_color_space);
43  impeller::Entity entity;
45  std::optional<Snapshot> snapshot =
46  yuv_to_rgb_filter_contents->RenderToSnapshot(
47  aiks_context->GetContentContext(), // renderer
48  entity, // entity
49  std::nullopt, // coverage_limit
50  std::nullopt, // sampler_descriptor
51  true, // msaa_enabled
52  /*mip_count=*/1,
53  "MakeYUVToRGBFilter Snapshot"); // label
54  if (!snapshot.has_value()) {
55  return nullptr;
56  }
57  return impeller::DlImageImpeller::Make(snapshot->texture);
58 }
59 
60 DlImageImpeller::DlImageImpeller(std::shared_ptr<Texture> texture,
61  OwningContext owning_context
62 #ifdef FML_OS_IOS_SIMULATOR
63  ,
64  bool is_fake_image
65 #endif // FML_OS_IOS_SIMULATOR
66  )
67  : texture_(std::move(texture)),
68  owning_context_(owning_context)
69 #ifdef FML_OS_IOS_SIMULATOR
70  ,
71  is_fake_image_(is_fake_image)
72 #endif // #ifdef FML_OS_IOS_SIMULATOR
73 {
74 }
75 
76 // |DlImage|
78 
79 // |DlImage|
80 sk_sp<SkImage> DlImageImpeller::skia_image() const {
81  return nullptr;
82 };
83 
84 // |DlImage|
85 std::shared_ptr<impeller::Texture> DlImageImpeller::impeller_texture() const {
86  return texture_;
87 }
88 
89 // |DlImage|
91  // Impeller doesn't currently implement opaque alpha types.
92  return false;
93 }
94 
95 // |DlImage|
97  // Impeller textures are always ... textures :/
98  return true;
99 }
100 
101 // |DlImage|
103  // Impeller textures are always thread-safe
104  return true;
105 }
106 
107 // |DlImage|
108 flutter::DlISize DlImageImpeller::GetSize() const {
109  // texture |GetSize()| returns a 64-bit size, but we need a 32-bit size,
110  // so we need to convert to DlISize (the 32-bit variant) either way.
111  return texture_ ? flutter::DlISize(texture_->GetSize()) : flutter::DlISize();
112 }
113 
114 // |DlImage|
116  auto size = sizeof(*this);
117  if (texture_) {
118  size += texture_->GetTextureDescriptor().GetByteSizeOfBaseMipLevel();
119  }
120  return size;
121 }
122 
123 } // namespace impeller
ContentContext & GetContentContext() const
Definition: aiks_context.cc:42
size_t GetApproximateByteSize() const override
static sk_sp< DlImageImpeller > MakeFromYUVTextures(AiksContext *aiks_context, std::shared_ptr< Texture > y_texture, std::shared_ptr< Texture > uv_texture, YUVColorSpace yuv_color_space)
bool isTextureBacked() const override
std::shared_ptr< impeller::Texture > impeller_texture() const override
static sk_sp< DlImageImpeller > Make(std::shared_ptr< Texture > texture, OwningContext owning_context=OwningContext::kIO)
flutter::DlISize GetSize() const override
sk_sp< SkImage > skia_image() const override
bool isUIThreadSafe() const override
bool isOpaque() const override
OwningContext owning_context() const override
void SetBlendMode(BlendMode blend_mode)
Definition: entity.cc:97
static std::shared_ptr< FilterContents > MakeYUVToRGBFilter(std::shared_ptr< Texture > y_texture, std::shared_ptr< Texture > uv_texture, YUVColorSpace yuv_color_space)
YUVColorSpace
Definition: color.h:54
Definition: comparable.h:95