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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 "core/frame/ImageBitmap.h" | 5 #include "core/frame/ImageBitmap.h" |
| 6 | 6 |
| 7 #include <memory> | 7 #include <memory> |
| 8 #include "core/html/HTMLCanvasElement.h" | 8 #include "core/html/HTMLCanvasElement.h" |
| 9 #include "core/html/HTMLVideoElement.h" | 9 #include "core/html/HTMLVideoElement.h" |
| 10 #include "core/html/ImageData.h" | 10 #include "core/html/ImageData.h" |
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| 410 // The parameter imageFormat indicates whether the first parameter "image" is | 410 // The parameter imageFormat indicates whether the first parameter "image" is |
| 411 // unpremultiplied or not. imageFormat = PremultiplyAlpha means the image is in | 411 // unpremultiplied or not. imageFormat = PremultiplyAlpha means the image is in |
| 412 // premuliplied format For example, if the image is already in unpremultiplied | 412 // premuliplied format For example, if the image is already in unpremultiplied |
| 413 // format and we want the created ImageBitmap in the same format, then we don't | 413 // format and we want the created ImageBitmap in the same format, then we don't |
| 414 // need to use the ImageDecoder to decode the image. | 414 // need to use the ImageDecoder to decode the image. |
| 415 static PassRefPtr<StaticBitmapImage> CropImageAndApplyColorSpaceConversion( | 415 static PassRefPtr<StaticBitmapImage> CropImageAndApplyColorSpaceConversion( |
| 416 Image* image, | 416 Image* image, |
| 417 ParsedOptions& parsed_options, | 417 ParsedOptions& parsed_options, |
| 418 AlphaDisposition image_format, | 418 AlphaDisposition image_format, |
| 419 ColorBehavior color_behavior) { | 419 ColorBehavior color_behavior) { |
| 420 ASSERT(image); | 420 DCHECK(image); |
| 421 IntRect img_rect(IntPoint(), IntSize(image->width(), image->height())); | 421 IntRect img_rect(IntPoint(), IntSize(image->width(), image->height())); |
| 422 const IntRect src_rect = Intersection(img_rect, parsed_options.crop_rect); | 422 const IntRect src_rect = Intersection(img_rect, parsed_options.crop_rect); |
| 423 | 423 |
| 424 // In the case when cropRect doesn't intersect the source image and it | 424 // In the case when cropRect doesn't intersect the source image and it |
| 425 // requires a umpremul image We immediately return a transparent black image | 425 // requires a umpremul image We immediately return a transparent black image |
| 426 // with cropRect.size() | 426 // with cropRect.size() |
| 427 if (src_rect.IsEmpty() && !parsed_options.premultiply_alpha) { | 427 if (src_rect.IsEmpty() && !parsed_options.premultiply_alpha) { |
| 428 SkImageInfo info = SkImageInfo::Make( | 428 SkImageInfo info = SkImageInfo::Make( |
| 429 parsed_options.resize_width, parsed_options.resize_height, | 429 parsed_options.resize_width, parsed_options.resize_height, |
| 430 kN32_SkColorType, kUnpremul_SkAlphaType); | 430 kN32_SkColorType, kUnpremul_SkAlphaType); |
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| 622 return; | 622 return; |
| 623 image_ = StaticBitmapImage::Create(std::move(skia_image)); | 623 image_ = StaticBitmapImage::Create(std::move(skia_image)); |
| 624 image_->SetOriginClean( | 624 image_->SetOriginClean( |
| 625 !video->WouldTaintOrigin(document->GetSecurityOrigin())); | 625 !video->WouldTaintOrigin(document->GetSecurityOrigin())); |
| 626 image_->SetPremultiplied(parsed_options.premultiply_alpha); | 626 image_->SetPremultiplied(parsed_options.premultiply_alpha); |
| 627 } | 627 } |
| 628 | 628 |
| 629 ImageBitmap::ImageBitmap(HTMLCanvasElement* canvas, | 629 ImageBitmap::ImageBitmap(HTMLCanvasElement* canvas, |
| 630 Optional<IntRect> crop_rect, | 630 Optional<IntRect> crop_rect, |
| 631 const ImageBitmapOptions& options) { | 631 const ImageBitmapOptions& options) { |
| 632 ASSERT(canvas->IsPaintable()); | 632 DCHECK(canvas->IsPaintable()); |
| 633 RefPtr<Image> input; | 633 RefPtr<Image> input; |
| 634 if (canvas->PlaceholderFrame()) { | 634 if (canvas->PlaceholderFrame()) { |
| 635 input = canvas->PlaceholderFrame(); | 635 input = canvas->PlaceholderFrame(); |
| 636 } else { | 636 } else { |
| 637 input = canvas->CopiedImage(kBackBuffer, kPreferAcceleration, | 637 input = canvas->CopiedImage(kBackBuffer, kPreferAcceleration, |
| 638 kSnapshotReasonCreateImageBitmap); | 638 kSnapshotReasonCreateImageBitmap); |
| 639 } | 639 } |
| 640 ParsedOptions parsed_options = ParseOptions( | 640 ParsedOptions parsed_options = ParseOptions( |
| 641 options, crop_rect, IntSize(input->width(), input->height())); | 641 options, crop_rect, IntSize(input->width(), input->height())); |
| 642 if (DstBufferSizeHasOverflow(parsed_options)) | 642 if (DstBufferSizeHasOverflow(parsed_options)) |
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| 971 | 971 |
| 972 image_->SetOriginClean(origin_clean); | 972 image_->SetOriginClean(origin_clean); |
| 973 image_->SetPremultiplied(parsed_options.premultiply_alpha); | 973 image_->SetPremultiplied(parsed_options.premultiply_alpha); |
| 974 } | 974 } |
| 975 | 975 |
| 976 ImageBitmap::ImageBitmap(PassRefPtr<StaticBitmapImage> image) { | 976 ImageBitmap::ImageBitmap(PassRefPtr<StaticBitmapImage> image) { |
| 977 image_ = std::move(image); | 977 image_ = std::move(image); |
| 978 } | 978 } |
| 979 | 979 |
| 980 PassRefPtr<StaticBitmapImage> ImageBitmap::Transfer() { | 980 PassRefPtr<StaticBitmapImage> ImageBitmap::Transfer() { |
| 981 ASSERT(!IsNeutered()); | 981 DCHECK(!IsNeutered()); |
| 982 is_neutered_ = true; | 982 is_neutered_ = true; |
| 983 image_->Transfer(); | 983 image_->Transfer(); |
| 984 return std::move(image_); | 984 return std::move(image_); |
| 985 } | 985 } |
| 986 | 986 |
| 987 ImageBitmap::~ImageBitmap() {} | 987 ImageBitmap::~ImageBitmap() {} |
| 988 | 988 |
| 989 ImageBitmap* ImageBitmap::Create(ImageElementBase* image, | 989 ImageBitmap* ImageBitmap::Create(ImageElementBase* image, |
| 990 Optional<IntRect> crop_rect, | 990 Optional<IntRect> crop_rect, |
| 991 Document* document, | 991 Document* document, |
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| 1128 void ImageBitmap::AdjustDrawRects(FloatRect* src_rect, | 1128 void ImageBitmap::AdjustDrawRects(FloatRect* src_rect, |
| 1129 FloatRect* dst_rect) const {} | 1129 FloatRect* dst_rect) const {} |
| 1130 | 1130 |
| 1131 FloatSize ImageBitmap::ElementSize(const FloatSize&) const { | 1131 FloatSize ImageBitmap::ElementSize(const FloatSize&) const { |
| 1132 return FloatSize(width(), height()); | 1132 return FloatSize(width(), height()); |
| 1133 } | 1133 } |
| 1134 | 1134 |
| 1135 DEFINE_TRACE(ImageBitmap) {} | 1135 DEFINE_TRACE(ImageBitmap) {} |
| 1136 | 1136 |
| 1137 } // namespace blink | 1137 } // namespace blink |
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