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1 /* | 1 /* |
2 * Copyright (c) 2008, Google Inc. All rights reserved. | 2 * Copyright (c) 2008, Google Inc. All rights reserved. |
3 * Copyright (C) 2009 Dirk Schulze <krit@webkit.org> | 3 * Copyright (C) 2009 Dirk Schulze <krit@webkit.org> |
4 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. | 4 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. |
5 * | 5 * |
6 * Redistribution and use in source and binary forms, with or without | 6 * Redistribution and use in source and binary forms, with or without |
7 * modification, are permitted provided that the following conditions are | 7 * modification, are permitted provided that the following conditions are |
8 * met: | 8 * met: |
9 * | 9 * |
10 * * Redistributions of source code must retain the above copyright | 10 * * Redistributions of source code must retain the above copyright |
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339 if (m_surface->colorSpace()) | 339 if (m_surface->colorSpace()) |
340 bytesPerPixel = SkColorTypeBytesPerPixel(m_surface->colorType()); | 340 bytesPerPixel = SkColorTypeBytesPerPixel(m_surface->colorType()); |
341 CheckedNumeric<int> dataSize = bytesPerPixel; | 341 CheckedNumeric<int> dataSize = bytesPerPixel; |
342 dataSize *= rect.width(); | 342 dataSize *= rect.width(); |
343 dataSize *= rect.height(); | 343 dataSize *= rect.height(); |
344 if (!dataSize.IsValid()) | 344 if (!dataSize.IsValid()) |
345 return false; | 345 return false; |
346 | 346 |
347 if (!isSurfaceValid()) { | 347 if (!isSurfaceValid()) { |
348 size_t allocSizeInBytes = rect.width() * rect.height() * bytesPerPixel; | 348 size_t allocSizeInBytes = rect.width() * rect.height() * bytesPerPixel; |
349 void* data; | 349 WTF::ArrayBufferContents::ScopedData data( |
350 WTF::ArrayBufferContents::allocateMemoryOrNull( | 350 WTF::ArrayBufferContents::allocateMemoryOrNull( |
351 allocSizeInBytes, WTF::ArrayBufferContents::ZeroInitialize, data); | 351 allocSizeInBytes, WTF::ArrayBufferContents::ZeroInitialize), |
| 352 WTF::ArrayBufferContents::freeMemory); |
352 if (!data) | 353 if (!data) |
353 return false; | 354 return false; |
354 WTF::ArrayBufferContents result(data, allocSizeInBytes, | 355 WTF::ArrayBufferContents result(std::move(data), allocSizeInBytes, |
355 WTF::ArrayBufferContents::NotShared); | 356 WTF::ArrayBufferContents::NotShared); |
356 result.transfer(contents); | 357 result.transfer(contents); |
357 return true; | 358 return true; |
358 } | 359 } |
359 | 360 |
360 DCHECK(canvas()); | 361 DCHECK(canvas()); |
361 | 362 |
362 if (ExpensiveCanvasHeuristicParameters::GetImageDataForcesNoAcceleration && | 363 if (ExpensiveCanvasHeuristicParameters::GetImageDataForcesNoAcceleration && |
363 !RuntimeEnabledFeatures::canvas2dFixedRenderingModeEnabled()) { | 364 !RuntimeEnabledFeatures::canvas2dFixedRenderingModeEnabled()) { |
364 const_cast<ImageBuffer*>(this)->disableAcceleration(); | 365 const_cast<ImageBuffer*>(this)->disableAcceleration(); |
365 } | 366 } |
366 | 367 |
367 sk_sp<SkImage> snapshot = m_surface->newImageSnapshot( | 368 sk_sp<SkImage> snapshot = m_surface->newImageSnapshot( |
368 PreferNoAcceleration, SnapshotReasonGetImageData); | 369 PreferNoAcceleration, SnapshotReasonGetImageData); |
369 if (!snapshot) | 370 if (!snapshot) |
370 return false; | 371 return false; |
371 | 372 |
372 const bool mayHaveStrayArea = | 373 const bool mayHaveStrayArea = |
373 m_surface->isAccelerated() // GPU readback may fail silently | 374 m_surface->isAccelerated() // GPU readback may fail silently |
374 || rect.x() < 0 || rect.y() < 0 || | 375 || rect.x() < 0 || rect.y() < 0 || |
375 rect.maxX() > m_surface->size().width() || | 376 rect.maxX() > m_surface->size().width() || |
376 rect.maxY() > m_surface->size().height(); | 377 rect.maxY() > m_surface->size().height(); |
377 size_t allocSizeInBytes = rect.width() * rect.height() * bytesPerPixel; | 378 size_t allocSizeInBytes = rect.width() * rect.height() * bytesPerPixel; |
378 void* data; | |
379 WTF::ArrayBufferContents::InitializationPolicy initializationPolicy = | 379 WTF::ArrayBufferContents::InitializationPolicy initializationPolicy = |
380 mayHaveStrayArea ? WTF::ArrayBufferContents::ZeroInitialize | 380 mayHaveStrayArea ? WTF::ArrayBufferContents::ZeroInitialize |
381 : WTF::ArrayBufferContents::DontInitialize; | 381 : WTF::ArrayBufferContents::DontInitialize; |
382 WTF::ArrayBufferContents::allocateMemoryOrNull(allocSizeInBytes, | 382 WTF::ArrayBufferContents::ScopedData data( |
383 initializationPolicy, data); | 383 WTF::ArrayBufferContents::allocateMemoryOrNull(allocSizeInBytes, |
| 384 initializationPolicy), |
| 385 WTF::ArrayBufferContents::freeMemory); |
384 if (!data) | 386 if (!data) |
385 return false; | 387 return false; |
386 WTF::ArrayBufferContents result(data, allocSizeInBytes, | 388 WTF::ArrayBufferContents result(std::move(data), allocSizeInBytes, |
387 WTF::ArrayBufferContents::NotShared); | 389 WTF::ArrayBufferContents::NotShared); |
388 | 390 |
389 // Skia does not support unpremultiplied read with an F16 to 8888 conversion | 391 // Skia does not support unpremultiplied read with an F16 to 8888 conversion |
390 bool useF16Workaround = m_surface->colorType() == kRGBA_F16_SkColorType; | 392 bool useF16Workaround = m_surface->colorType() == kRGBA_F16_SkColorType; |
391 | 393 |
392 SkAlphaType alphaType = (multiplied == Premultiplied || useF16Workaround) | 394 SkAlphaType alphaType = (multiplied == Premultiplied || useF16Workaround) |
393 ? kPremul_SkAlphaType | 395 ? kPremul_SkAlphaType |
394 : kUnpremul_SkAlphaType; | 396 : kUnpremul_SkAlphaType; |
395 // The workaround path use a canvas draw under the hood, which can only | 397 // The workaround path use a canvas draw under the hood, which can only |
396 // use N32 at this time. | 398 // use N32 at this time. |
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608 DCHECK(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType)); | 610 DCHECK(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType)); |
609 | 611 |
610 Vector<unsigned char> result; | 612 Vector<unsigned char> result; |
611 if (!encodeImage(mimeType, quality, &result)) | 613 if (!encodeImage(mimeType, quality, &result)) |
612 return "data:,"; | 614 return "data:,"; |
613 | 615 |
614 return "data:" + mimeType + ";base64," + base64Encode(result); | 616 return "data:" + mimeType + ";base64," + base64Encode(result); |
615 } | 617 } |
616 | 618 |
617 } // namespace blink | 619 } // namespace blink |
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