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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "modules/shapedetection/ShapeDetector.h" | 5 #include "modules/shapedetection/ShapeDetector.h" |
6 | 6 |
7 #include "core/dom/DOMException.h" | 7 #include "core/dom/DOMException.h" |
8 #include "core/dom/DOMRect.h" | 8 #include "core/dom/DOMRect.h" |
9 #include "core/dom/Document.h" | 9 #include "core/dom/Document.h" |
10 #include "core/frame/ImageBitmap.h" | 10 #include "core/frame/ImageBitmap.h" |
11 #include "core/frame/LocalFrame.h" | 11 #include "core/frame/LocalFrame.h" |
12 #include "core/html/HTMLImageElement.h" | 12 #include "core/html/HTMLImageElement.h" |
13 #include "core/html/HTMLVideoElement.h" | 13 #include "core/html/HTMLVideoElement.h" |
14 #include "core/html/ImageData.h" | 14 #include "core/html/ImageData.h" |
15 #include "core/loader/resource/ImageResourceContent.h" | 15 #include "core/loader/resource/ImageResourceContent.h" |
16 #include "platform/graphics/Image.h" | 16 #include "platform/graphics/Image.h" |
17 #include "third_party/skia/include/core/SkImage.h" | 17 #include "third_party/skia/include/core/SkImage.h" |
18 #include "third_party/skia/include/core/SkImageInfo.h" | 18 #include "third_party/skia/include/core/SkImageInfo.h" |
19 #include "wtf/CheckedNumeric.h" | 19 #include "wtf/CheckedNumeric.h" |
20 | 20 |
21 namespace blink { | 21 namespace blink { |
22 | 22 |
23 namespace { | 23 namespace { |
24 | 24 |
25 mojo::ScopedSharedBufferHandle getSharedBufferOnData( | 25 skia::mojom::blink::BitmapPtr createBitmapFromData(int width, |
26 ScriptPromiseResolver* resolver, | 26 int height, |
27 uint8_t* data, | 27 Vector<uint8_t> bitmapData) { |
28 int size) { | 28 skia::mojom::blink::BitmapPtr bitmap = skia::mojom::blink::Bitmap::New(); |
29 DCHECK(data); | |
30 DCHECK(size); | |
31 ScriptPromise promise = resolver->promise(); | |
32 | 29 |
33 mojo::ScopedSharedBufferHandle sharedBufferHandle = | 30 bitmap->color_type = (kN32_SkColorType == kRGBA_8888_SkColorType) |
34 mojo::SharedBufferHandle::Create(size); | 31 ? skia::mojom::ColorType::RGBA_8888 |
35 if (!sharedBufferHandle->is_valid()) { | 32 : skia::mojom::ColorType::BGRA_8888; |
36 resolver->reject( | 33 bitmap->width = width; |
37 DOMException::create(InvalidStateError, "Internal allocation error")); | 34 bitmap->height = height; |
38 return sharedBufferHandle; | 35 bitmap->pixel_data = std::move(bitmapData); |
39 } | |
40 | 36 |
41 const mojo::ScopedSharedBufferMapping mappedBuffer = | 37 return bitmap; |
42 sharedBufferHandle->Map(size); | |
43 DCHECK(mappedBuffer.get()); | |
44 memcpy(mappedBuffer.get(), data, size); | |
45 | |
46 return sharedBufferHandle; | |
47 } | 38 } |
48 | 39 |
49 } // anonymous namespace | 40 } // anonymous namespace |
50 | 41 |
51 ScriptPromise ShapeDetector::detect(ScriptState* scriptState, | 42 ScriptPromise ShapeDetector::detect(ScriptState* scriptState, |
52 const ImageBitmapSourceUnion& imageSource) { | 43 const ImageBitmapSourceUnion& imageSource) { |
53 ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState); | 44 ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState); |
54 ScriptPromise promise = resolver->promise(); | 45 ScriptPromise promise = resolver->promise(); |
55 | 46 |
56 // ImageDatas cannot be tainted by definition. | 47 // ImageDatas cannot be tainted by definition. |
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129 pixelDataPtr = pixelData->data(); | 120 pixelDataPtr = pixelData->data(); |
130 allocationSize = imageBitmap->size().area() * 4 /* bytes per pixel */; | 121 allocationSize = imageBitmap->size().area() * 4 /* bytes per pixel */; |
131 } else { | 122 } else { |
132 // TODO(mcasas): retrieve the pixels from elsewhere. | 123 // TODO(mcasas): retrieve the pixels from elsewhere. |
133 NOTREACHED(); | 124 NOTREACHED(); |
134 resolver->reject(DOMException::create( | 125 resolver->reject(DOMException::create( |
135 InvalidStateError, "Failed to get pixels for current frame.")); | 126 InvalidStateError, "Failed to get pixels for current frame.")); |
136 return promise; | 127 return promise; |
137 } | 128 } |
138 | 129 |
139 mojo::ScopedSharedBufferHandle sharedBufferHandle = getSharedBufferOnData( | 130 WTF::Vector<uint8_t> bitmapData; |
140 resolver, pixelDataPtr, allocationSize.ValueOrDefault(0)); | 131 bitmapData.append(pixelDataPtr, |
141 if (!sharedBufferHandle->is_valid()) | 132 static_cast<int>(allocationSize.ValueOrDefault(0))); |
142 return promise; | |
143 | 133 |
144 return doDetect(resolver, std::move(sharedBufferHandle), image->width(), | 134 return doDetect(resolver, |
145 image->height()); | 135 createBitmapFromData(image->width(), image->height(), |
| 136 std::move(bitmapData))); |
146 } | 137 } |
147 | 138 |
148 ScriptPromise ShapeDetector::detectShapesOnImageData( | 139 ScriptPromise ShapeDetector::detectShapesOnImageData( |
149 ScriptPromiseResolver* resolver, | 140 ScriptPromiseResolver* resolver, |
150 ImageData* imageData) { | 141 ImageData* imageData) { |
151 ScriptPromise promise = resolver->promise(); | 142 ScriptPromise promise = resolver->promise(); |
152 | 143 |
153 if (imageData->size().isZero()) { | 144 if (imageData->size().isZero()) { |
154 resolver->resolve(HeapVector<Member<DOMRect>>()); | 145 resolver->resolve(HeapVector<Member<DOMRect>>()); |
155 return promise; | 146 return promise; |
156 } | 147 } |
157 | 148 |
158 uint8_t* const data = imageData->data()->data(); | 149 uint8_t* const data = imageData->data()->data(); |
159 WTF::CheckedNumeric<int> allocationSize = imageData->size().area() * 4; | 150 WTF::CheckedNumeric<int> allocationSize = imageData->size().area() * 4; |
| 151 WTF::Vector<uint8_t> bitmapData; |
| 152 bitmapData.append(data, static_cast<int>(allocationSize.ValueOrDefault(0))); |
160 | 153 |
161 mojo::ScopedSharedBufferHandle sharedBufferHandle = | 154 return doDetect(resolver, |
162 getSharedBufferOnData(resolver, data, allocationSize.ValueOrDefault(0)); | 155 createBitmapFromData(imageData->width(), imageData->height(), |
163 if (!sharedBufferHandle->is_valid()) | 156 std::move(bitmapData))); |
164 return promise; | |
165 | |
166 return doDetect(resolver, std::move(sharedBufferHandle), imageData->width(), | |
167 imageData->height()); | |
168 } | 157 } |
169 | 158 |
170 ScriptPromise ShapeDetector::detectShapesOnImageElement( | 159 ScriptPromise ShapeDetector::detectShapesOnImageElement( |
171 ScriptPromiseResolver* resolver, | 160 ScriptPromiseResolver* resolver, |
172 const HTMLImageElement* img) { | 161 const HTMLImageElement* img) { |
173 ScriptPromise promise = resolver->promise(); | 162 ScriptPromise promise = resolver->promise(); |
174 | 163 |
175 if (img->bitmapSourceSize().isZero()) { | 164 if (img->bitmapSourceSize().isZero()) { |
176 resolver->resolve(HeapVector<Member<DOMRect>>()); | 165 resolver->resolve(HeapVector<Member<DOMRect>>()); |
177 return promise; | 166 return promise; |
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198 DCHECK_EQ(img->naturalHeight(), static_cast<unsigned>(image->height())); | 187 DCHECK_EQ(img->naturalHeight(), static_cast<unsigned>(image->height())); |
199 | 188 |
200 if (!image) { | 189 if (!image) { |
201 resolver->reject(DOMException::create( | 190 resolver->reject(DOMException::create( |
202 InvalidStateError, "Failed to get image from current frame.")); | 191 InvalidStateError, "Failed to get image from current frame.")); |
203 return promise; | 192 return promise; |
204 } | 193 } |
205 | 194 |
206 const SkImageInfo skiaInfo = | 195 const SkImageInfo skiaInfo = |
207 SkImageInfo::MakeN32(image->width(), image->height(), image->alphaType()); | 196 SkImageInfo::MakeN32(image->width(), image->height(), image->alphaType()); |
| 197 size_t rowBytes = skiaInfo.minRowBytes(); |
208 | 198 |
209 const uint32_t allocationSize = skiaInfo.getSafeSize(skiaInfo.minRowBytes()); | 199 Vector<uint8_t> bitmapData(skiaInfo.getSafeSize(rowBytes)); |
210 | 200 const SkPixmap pixmap(skiaInfo, bitmapData.data(), rowBytes); |
211 mojo::ScopedSharedBufferHandle sharedBufferHandle = | |
212 mojo::SharedBufferHandle::Create(allocationSize); | |
213 if (!sharedBufferHandle.is_valid()) { | |
214 DLOG(ERROR) << "Requested allocation : " << allocationSize | |
215 << "B, larger than |mojo::edk::kMaxSharedBufferSize| == 16MB "; | |
216 // TODO(xianglu): For now we reject the promise if the image is too large. | |
217 // But consider resizing the image to remove restriction on the user side. | |
218 // Also, add LayoutTests for this case later. | |
219 resolver->reject( | |
220 DOMException::create(InvalidStateError, "Image exceeds size limit.")); | |
221 return promise; | |
222 } | |
223 | |
224 const mojo::ScopedSharedBufferMapping mappedBuffer = | |
225 sharedBufferHandle->Map(allocationSize); | |
226 | |
227 const SkPixmap pixmap(skiaInfo, mappedBuffer.get(), skiaInfo.minRowBytes()); | |
228 if (!image->readPixels(pixmap, 0, 0)) { | 201 if (!image->readPixels(pixmap, 0, 0)) { |
229 resolver->reject(DOMException::create( | 202 resolver->reject(DOMException::create( |
230 InvalidStateError, | 203 InvalidStateError, |
231 "Failed to read pixels: Unable to decompress or unsupported format.")); | 204 "Failed to read pixels: Unable to decompress or unsupported format.")); |
232 return promise; | 205 return promise; |
233 } | 206 } |
234 | 207 |
235 return doDetect(resolver, std::move(sharedBufferHandle), img->naturalWidth(), | 208 return doDetect( |
236 img->naturalHeight()); | 209 resolver, createBitmapFromData(img->naturalWidth(), img->naturalHeight(), |
| 210 std::move(bitmapData))); |
237 } | 211 } |
238 | 212 |
239 } // namespace blink | 213 } // namespace blink |
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