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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 "core/html/HTMLCanvasElement.h" | 7 #include "core/html/HTMLCanvasElement.h" |
| 8 #include "core/html/HTMLVideoElement.h" | 8 #include "core/html/HTMLVideoElement.h" |
| 9 #include "core/html/ImageData.h" | 9 #include "core/html/ImageData.h" |
| 10 #include "platform/graphics/skia/SkiaUtils.h" | 10 #include "platform/graphics/skia/SkiaUtils.h" |
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| 269 | 269 |
| 270 // The parameter imageFormat indicates whether the first parameter "image" is | 270 // The parameter imageFormat indicates whether the first parameter "image" is |
| 271 // unpremultiplied or not. imageFormat = PremultiplyAlpha means the image is in | 271 // unpremultiplied or not. imageFormat = PremultiplyAlpha means the image is in |
| 272 // premuliplied format For example, if the image is already in unpremultiplied | 272 // premuliplied format For example, if the image is already in unpremultiplied |
| 273 // format and we want the created ImageBitmap in the same format, then we don't | 273 // format and we want the created ImageBitmap in the same format, then we don't |
| 274 // need to use the ImageDecoder to decode the image. | 274 // need to use the ImageDecoder to decode the image. |
| 275 static PassRefPtr<StaticBitmapImage> cropImage( | 275 static PassRefPtr<StaticBitmapImage> cropImage( |
| 276 Image* image, | 276 Image* image, |
| 277 const ParsedOptions& parsedOptions, | 277 const ParsedOptions& parsedOptions, |
| 278 AlphaDisposition imageFormat = PremultiplyAlpha, | 278 AlphaDisposition imageFormat = PremultiplyAlpha, |
| 279 ImageDecoder::GammaAndColorProfileOption colorSpaceOp = | 279 ImageDecoder::ColorSpaceOption colorSpaceOp = |
| 280 ImageDecoder::GammaAndColorProfileApplied) { | 280 ImageDecoder::ColorSpaceApplied) { |
| 281 ASSERT(image); | 281 ASSERT(image); |
| 282 IntRect imgRect(IntPoint(), IntSize(image->width(), image->height())); | 282 IntRect imgRect(IntPoint(), IntSize(image->width(), image->height())); |
| 283 const IntRect srcRect = intersection(imgRect, parsedOptions.cropRect); | 283 const IntRect srcRect = intersection(imgRect, parsedOptions.cropRect); |
| 284 | 284 |
| 285 // In the case when cropRect doesn't intersect the source image and it | 285 // In the case when cropRect doesn't intersect the source image and it |
| 286 // requires a umpremul image We immediately return a transparent black image | 286 // requires a umpremul image We immediately return a transparent black image |
| 287 // with cropRect.size() | 287 // with cropRect.size() |
| 288 if (srcRect.isEmpty() && !parsedOptions.premultiplyAlpha) { | 288 if (srcRect.isEmpty() && !parsedOptions.premultiplyAlpha) { |
| 289 SkImageInfo info = | 289 SkImageInfo info = |
| 290 SkImageInfo::Make(parsedOptions.resizeWidth, parsedOptions.resizeHeight, | 290 SkImageInfo::Make(parsedOptions.resizeWidth, parsedOptions.resizeHeight, |
| 291 kN32_SkColorType, kUnpremul_SkAlphaType); | 291 kN32_SkColorType, kUnpremul_SkAlphaType); |
| 292 RefPtr<ArrayBuffer> dstBuffer = ArrayBuffer::createOrNull( | 292 RefPtr<ArrayBuffer> dstBuffer = ArrayBuffer::createOrNull( |
| 293 static_cast<size_t>(info.width()) * info.height(), | 293 static_cast<size_t>(info.width()) * info.height(), |
| 294 info.bytesPerPixel()); | 294 info.bytesPerPixel()); |
| 295 if (!dstBuffer) | 295 if (!dstBuffer) |
| 296 return nullptr; | 296 return nullptr; |
| 297 RefPtr<Uint8Array> dstPixels = | 297 RefPtr<Uint8Array> dstPixels = |
| 298 Uint8Array::create(dstBuffer, 0, dstBuffer->byteLength()); | 298 Uint8Array::create(dstBuffer, 0, dstBuffer->byteLength()); |
| 299 return StaticBitmapImage::create(newSkImageFromRaster( | 299 return StaticBitmapImage::create(newSkImageFromRaster( |
| 300 info, std::move(dstPixels), | 300 info, std::move(dstPixels), |
| 301 static_cast<size_t>(info.width()) * info.bytesPerPixel())); | 301 static_cast<size_t>(info.width()) * info.bytesPerPixel())); |
| 302 } | 302 } |
| 303 | 303 |
| 304 sk_sp<SkImage> skiaImage = image->imageForCurrentFrame(); | 304 sk_sp<SkImage> skiaImage = image->imageForCurrentFrame(); |
| 305 // Attempt to get raw unpremultiplied image data, executed only when skiaImage | 305 // Attempt to get raw unpremultiplied image data, executed only when skiaImage |
| 306 // is premultiplied. | 306 // is premultiplied. |
| 307 if ((((!parsedOptions.premultiplyAlpha && !skiaImage->isOpaque()) || | 307 if ((((!parsedOptions.premultiplyAlpha && !skiaImage->isOpaque()) || |
| 308 !skiaImage) && | 308 !skiaImage) && |
| 309 image->data() && imageFormat == PremultiplyAlpha) || | 309 image->data() && imageFormat == PremultiplyAlpha) || |
| 310 colorSpaceOp == ImageDecoder::GammaAndColorProfileIgnored) { | 310 colorSpaceOp == ImageDecoder::ColorSpaceIgnored) { |
| 311 std::unique_ptr<ImageDecoder> decoder(ImageDecoder::create( | 311 std::unique_ptr<ImageDecoder> decoder(ImageDecoder::create( |
| 312 image->data(), true, | 312 image->data(), true, |
| 313 parsedOptions.premultiplyAlpha ? ImageDecoder::AlphaPremultiplied | 313 parsedOptions.premultiplyAlpha ? ImageDecoder::AlphaPremultiplied |
| 314 : ImageDecoder::AlphaNotPremultiplied, | 314 : ImageDecoder::AlphaNotPremultiplied, |
| 315 colorSpaceOp)); | 315 colorSpaceOp)); |
| 316 if (!decoder) | 316 if (!decoder) |
| 317 return nullptr; | 317 return nullptr; |
| 318 skiaImage = ImageBitmap::getSkImageFromDecoder(std::move(decoder)); | 318 skiaImage = ImageBitmap::getSkImageFromDecoder(std::move(decoder)); |
| 319 if (!skiaImage) | 319 if (!skiaImage) |
| 320 return nullptr; | 320 return nullptr; |
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| 381 ImageBitmap::ImageBitmap(HTMLImageElement* image, | 381 ImageBitmap::ImageBitmap(HTMLImageElement* image, |
| 382 Optional<IntRect> cropRect, | 382 Optional<IntRect> cropRect, |
| 383 Document* document, | 383 Document* document, |
| 384 const ImageBitmapOptions& options) { | 384 const ImageBitmapOptions& options) { |
| 385 RefPtr<Image> input = image->cachedImage()->getImage(); | 385 RefPtr<Image> input = image->cachedImage()->getImage(); |
| 386 ParsedOptions parsedOptions = | 386 ParsedOptions parsedOptions = |
| 387 parseOptions(options, cropRect, image->bitmapSourceSize()); | 387 parseOptions(options, cropRect, image->bitmapSourceSize()); |
| 388 if (dstBufferSizeHasOverflow(parsedOptions)) | 388 if (dstBufferSizeHasOverflow(parsedOptions)) |
| 389 return; | 389 return; |
| 390 | 390 |
| 391 if (options.colorSpaceConversion() == "none") | 391 if (options.colorSpaceConversion() == "none") { |
| 392 m_image = cropImage(input.get(), parsedOptions, PremultiplyAlpha, | 392 m_image = cropImage(input.get(), parsedOptions, PremultiplyAlpha, |
| 393 ImageDecoder::GammaAndColorProfileIgnored); | 393 ImageDecoder::ColorSpaceIgnored); |
| 394 else | 394 } else { |
| 395 m_image = cropImage(input.get(), parsedOptions, PremultiplyAlpha, | 395 m_image = cropImage(input.get(), parsedOptions, PremultiplyAlpha, |
| 396 ImageDecoder::GammaAndColorProfileApplied); | 396 ImageDecoder::ColorSpaceApplied); |
| 397 } |
| 397 if (!m_image) | 398 if (!m_image) |
| 398 return; | 399 return; |
| 399 // In the case where the source image is lazy-decoded, m_image may not be in | 400 // In the case where the source image is lazy-decoded, m_image may not be in |
| 400 // a decoded state, we trigger it here. | 401 // a decoded state, we trigger it here. |
| 401 sk_sp<SkImage> skImage = m_image->imageForCurrentFrame(); | 402 sk_sp<SkImage> skImage = m_image->imageForCurrentFrame(); |
| 402 SkPixmap pixmap; | 403 SkPixmap pixmap; |
| 403 if (!skImage->isTextureBacked() && !skImage->peekPixels(&pixmap)) { | 404 if (!skImage->isTextureBacked() && !skImage->peekPixels(&pixmap)) { |
| 404 sk_sp<SkSurface> surface = | 405 sk_sp<SkSurface> surface = |
| 405 SkSurface::MakeRasterN32Premul(skImage->width(), skImage->height()); | 406 SkSurface::MakeRasterN32Premul(skImage->width(), skImage->height()); |
| 406 surface->getCanvas()->drawImage(skImage, 0, 0); | 407 surface->getCanvas()->drawImage(skImage, 0, 0); |
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| 856 void ImageBitmap::adjustDrawRects(FloatRect* srcRect, | 857 void ImageBitmap::adjustDrawRects(FloatRect* srcRect, |
| 857 FloatRect* dstRect) const {} | 858 FloatRect* dstRect) const {} |
| 858 | 859 |
| 859 FloatSize ImageBitmap::elementSize(const FloatSize&) const { | 860 FloatSize ImageBitmap::elementSize(const FloatSize&) const { |
| 860 return FloatSize(width(), height()); | 861 return FloatSize(width(), height()); |
| 861 } | 862 } |
| 862 | 863 |
| 863 DEFINE_TRACE(ImageBitmap) {} | 864 DEFINE_TRACE(ImageBitmap) {} |
| 864 | 865 |
| 865 } // namespace blink | 866 } // namespace blink |
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