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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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279 | 280 |
280 bool ImageBuffer::getImageData(Multiply multiplied, const IntRect& rect, WTF::Ar
rayBufferContents& contents) const | 281 bool ImageBuffer::getImageData(Multiply multiplied, const IntRect& rect, WTF::Ar
rayBufferContents& contents) const |
281 { | 282 { |
282 Checked<int, RecordOverflow> dataSize = 4; | 283 Checked<int, RecordOverflow> dataSize = 4; |
283 dataSize *= rect.width(); | 284 dataSize *= rect.width(); |
284 dataSize *= rect.height(); | 285 dataSize *= rect.height(); |
285 if (dataSize.hasOverflowed()) | 286 if (dataSize.hasOverflowed()) |
286 return false; | 287 return false; |
287 | 288 |
288 if (!isSurfaceValid()) { | 289 if (!isSurfaceValid()) { |
289 WTF::ArrayBufferContents result(rect.width() * rect.height(), 4, WTF::Ar
rayBufferContents::NotShared, WTF::ArrayBufferContents::ZeroInitialize); | 290 WTF::ArrayBufferContents result(rect.width() * rect.height(), 4, WTF::Ar
rayBufferContents::NotShared, WTF::ArrayBufferContents::ZeroInitialize, WTF::Arr
ayBufferContents::NullDataIfOutOfMemory); |
| 291 if (!result.data()) |
| 292 return false; |
290 result.transfer(contents); | 293 result.transfer(contents); |
291 return true; | 294 return true; |
292 } | 295 } |
293 | 296 |
294 ASSERT(canvas()); | 297 ASSERT(canvas()); |
295 RefPtr<SkImage> snapshot = m_surface->newImageSnapshot(PreferNoAcceleration)
; | 298 RefPtr<SkImage> snapshot = m_surface->newImageSnapshot(PreferNoAcceleration)
; |
296 if (!snapshot) | 299 if (!snapshot) |
297 return false; | 300 return false; |
298 | 301 |
299 const bool mayHaveStrayArea = | 302 const bool mayHaveStrayArea = |
300 m_surface->isAccelerated() // GPU readback may fail silently | 303 m_surface->isAccelerated() // GPU readback may fail silently |
301 || rect.x() < 0 | 304 || rect.x() < 0 |
302 || rect.y() < 0 | 305 || rect.y() < 0 |
303 || rect.maxX() > m_surface->size().width() | 306 || rect.maxX() > m_surface->size().width() |
304 || rect.maxY() > m_surface->size().height(); | 307 || rect.maxY() > m_surface->size().height(); |
305 WTF::ArrayBufferContents result( | 308 WTF::ArrayBufferContents result( |
306 rect.width() * rect.height(), 4, | 309 rect.width() * rect.height(), 4, |
307 WTF::ArrayBufferContents::NotShared, | 310 WTF::ArrayBufferContents::NotShared, |
308 mayHaveStrayArea | 311 mayHaveStrayArea |
309 ? WTF::ArrayBufferContents::ZeroInitialize | 312 ? WTF::ArrayBufferContents::ZeroInitialize |
310 : WTF::ArrayBufferContents::DontInitialize); | 313 : WTF::ArrayBufferContents::DontInitialize, |
| 314 WTF::ArrayBufferContents::NullDataIfOutOfMemory); |
| 315 |
| 316 if (!result.data()) |
| 317 return false; |
311 | 318 |
312 SkAlphaType alphaType = (multiplied == Premultiplied) ? kPremul_SkAlphaType
: kUnpremul_SkAlphaType; | 319 SkAlphaType alphaType = (multiplied == Premultiplied) ? kPremul_SkAlphaType
: kUnpremul_SkAlphaType; |
313 SkImageInfo info = SkImageInfo::Make(rect.width(), rect.height(), kRGBA_8888
_SkColorType, alphaType); | 320 SkImageInfo info = SkImageInfo::Make(rect.width(), rect.height(), kRGBA_8888
_SkColorType, alphaType); |
314 | 321 |
315 snapshot->readPixels(info, result.data(), 4 * rect.width(), rect.x(), rect.y
()); | 322 snapshot->readPixels(info, result.data(), 4 * rect.width(), rect.x(), rect.y
()); |
316 result.transfer(contents); | 323 result.transfer(contents); |
317 return true; | 324 return true; |
318 } | 325 } |
319 | 326 |
320 void ImageBuffer::putByteArray(Multiply multiplied, const unsigned char* source,
const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint
) | 327 void ImageBuffer::putByteArray(Multiply multiplied, const unsigned char* source,
const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint
) |
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374 ASSERT(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType)); | 381 ASSERT(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType)); |
375 | 382 |
376 Vector<unsigned char> result; | 383 Vector<unsigned char> result; |
377 if (!encodeImage(mimeType, quality, &result)) | 384 if (!encodeImage(mimeType, quality, &result)) |
378 return "data:,"; | 385 return "data:,"; |
379 | 386 |
380 return "data:" + mimeType + ";base64," + base64Encode(result); | 387 return "data:" + mimeType + ";base64," + base64Encode(result); |
381 } | 388 } |
382 | 389 |
383 } // namespace blink | 390 } // namespace blink |
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