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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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47 #include "platform/image-encoders/skia/JPEGImageEncoder.h" | 47 #include "platform/image-encoders/skia/JPEGImageEncoder.h" |
48 #include "platform/image-encoders/skia/PNGImageEncoder.h" | 48 #include "platform/image-encoders/skia/PNGImageEncoder.h" |
49 #include "platform/image-encoders/skia/WEBPImageEncoder.h" | 49 #include "platform/image-encoders/skia/WEBPImageEncoder.h" |
50 #include "public/platform/Platform.h" | 50 #include "public/platform/Platform.h" |
51 #include "public/platform/WebExternalTextureMailbox.h" | 51 #include "public/platform/WebExternalTextureMailbox.h" |
52 #include "public/platform/WebGraphicsContext3D.h" | 52 #include "public/platform/WebGraphicsContext3D.h" |
53 #include "public/platform/WebGraphicsContext3DProvider.h" | 53 #include "public/platform/WebGraphicsContext3DProvider.h" |
54 #include "third_party/skia/include/core/SkPicture.h" | 54 #include "third_party/skia/include/core/SkPicture.h" |
55 #include "wtf/ArrayBufferContents.h" | 55 #include "wtf/ArrayBufferContents.h" |
56 #include "wtf/MathExtras.h" | 56 #include "wtf/MathExtras.h" |
| 57 #include "wtf/PartitionAlloc.h" |
57 #include "wtf/Vector.h" | 58 #include "wtf/Vector.h" |
58 #include "wtf/text/Base64.h" | 59 #include "wtf/text/Base64.h" |
59 #include "wtf/text/WTFString.h" | 60 #include "wtf/text/WTFString.h" |
60 | 61 |
61 namespace blink { | 62 namespace blink { |
62 | 63 |
63 PassOwnPtr<ImageBuffer> ImageBuffer::create(PassOwnPtr<ImageBufferSurface> surfa
ce) | 64 PassOwnPtr<ImageBuffer> ImageBuffer::create(PassOwnPtr<ImageBufferSurface> surfa
ce) |
64 { | 65 { |
65 if (!surface->isValid()) | 66 if (!surface->isValid()) |
66 return nullptr; | 67 return nullptr; |
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283 | 284 |
284 bool ImageBuffer::getImageData(Multiply multiplied, const IntRect& rect, WTF::Ar
rayBufferContents& contents) const | 285 bool ImageBuffer::getImageData(Multiply multiplied, const IntRect& rect, WTF::Ar
rayBufferContents& contents) const |
285 { | 286 { |
286 Checked<int, RecordOverflow> dataSize = 4; | 287 Checked<int, RecordOverflow> dataSize = 4; |
287 dataSize *= rect.width(); | 288 dataSize *= rect.width(); |
288 dataSize *= rect.height(); | 289 dataSize *= rect.height(); |
289 if (dataSize.hasOverflowed()) | 290 if (dataSize.hasOverflowed()) |
290 return false; | 291 return false; |
291 | 292 |
292 if (!isSurfaceValid()) { | 293 if (!isSurfaceValid()) { |
293 WTF::ArrayBufferContents result(rect.width() * rect.height(), 4, WTF::Ar
rayBufferContents::NotShared, WTF::ArrayBufferContents::ZeroInitialize); | 294 WTF::ArrayBufferContents result(rect.width() * rect.height(), 4, WTF::Ar
rayBufferContents::NotShared, WTF::ArrayBufferContents::ZeroInitialize, WTF::Arr
ayBufferContents::NullDataIfOutOfMemory); |
| 295 if (!result.data()) |
| 296 return false; |
294 result.transfer(contents); | 297 result.transfer(contents); |
295 return true; | 298 return true; |
296 } | 299 } |
297 | 300 |
298 ASSERT(canvas()); | 301 ASSERT(canvas()); |
299 RefPtr<SkImage> snapshot = m_surface->newImageSnapshot(PreferNoAcceleration)
; | 302 RefPtr<SkImage> snapshot = m_surface->newImageSnapshot(PreferNoAcceleration)
; |
300 if (!snapshot) | 303 if (!snapshot) |
301 return false; | 304 return false; |
302 | 305 |
303 const bool mayHaveStrayArea = | 306 const bool mayHaveStrayArea = |
304 m_surface->isAccelerated() // GPU readback may fail silently | 307 m_surface->isAccelerated() // GPU readback may fail silently |
305 || rect.x() < 0 | 308 || rect.x() < 0 |
306 || rect.y() < 0 | 309 || rect.y() < 0 |
307 || rect.maxX() > m_surface->size().width() | 310 || rect.maxX() > m_surface->size().width() |
308 || rect.maxY() > m_surface->size().height(); | 311 || rect.maxY() > m_surface->size().height(); |
309 WTF::ArrayBufferContents result( | 312 WTF::ArrayBufferContents result( |
310 rect.width() * rect.height(), 4, | 313 rect.width() * rect.height(), 4, |
311 WTF::ArrayBufferContents::NotShared, | 314 WTF::ArrayBufferContents::NotShared, |
312 mayHaveStrayArea | 315 mayHaveStrayArea |
313 ? WTF::ArrayBufferContents::ZeroInitialize | 316 ? WTF::ArrayBufferContents::ZeroInitialize |
314 : WTF::ArrayBufferContents::DontInitialize); | 317 : WTF::ArrayBufferContents::DontInitialize, |
| 318 WTF::ArrayBufferContents::NullDataIfOutOfMemory); |
| 319 |
| 320 if (!result.data()) |
| 321 return false; |
315 | 322 |
316 SkAlphaType alphaType = (multiplied == Premultiplied) ? kPremul_SkAlphaType
: kUnpremul_SkAlphaType; | 323 SkAlphaType alphaType = (multiplied == Premultiplied) ? kPremul_SkAlphaType
: kUnpremul_SkAlphaType; |
317 SkImageInfo info = SkImageInfo::Make(rect.width(), rect.height(), kRGBA_8888
_SkColorType, alphaType); | 324 SkImageInfo info = SkImageInfo::Make(rect.width(), rect.height(), kRGBA_8888
_SkColorType, alphaType); |
318 | 325 |
319 snapshot->readPixels(info, result.data(), 4 * rect.width(), rect.x(), rect.y
()); | 326 snapshot->readPixels(info, result.data(), 4 * rect.width(), rect.x(), rect.y
()); |
320 result.transfer(contents); | 327 result.transfer(contents); |
321 return true; | 328 return true; |
322 } | 329 } |
323 | 330 |
324 void ImageBuffer::putByteArray(Multiply multiplied, const unsigned char* source,
const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint
) | 331 void ImageBuffer::putByteArray(Multiply multiplied, const unsigned char* source,
const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint
) |
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378 ASSERT(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType)); | 385 ASSERT(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType)); |
379 | 386 |
380 Vector<unsigned char> result; | 387 Vector<unsigned char> result; |
381 if (!encodeImage(mimeType, quality, &result)) | 388 if (!encodeImage(mimeType, quality, &result)) |
382 return "data:,"; | 389 return "data:,"; |
383 | 390 |
384 return "data:" + mimeType + ";base64," + base64Encode(result); | 391 return "data:" + mimeType + ";base64," + base64Encode(result); |
385 } | 392 } |
386 | 393 |
387 } // namespace blink | 394 } // namespace blink |
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