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Side by Side Diff: third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h

Issue 1403393004: JPEGImageDecoder RGB565 and downsample support and related Skia imagegenerator changes Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 2 months ago
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1 /* 1 /*
2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
3 * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved. 3 * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
4 * 4 *
5 * Redistribution and use in source and binary forms, with or without 5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions 6 * modification, are permitted provided that the following conditions
7 * are met: 7 * are met:
8 * 1. Redistributions of source code must retain the above copyright 8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer. 9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright 10 * 2. Redistributions in binary form must reproduce the above copyright
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285 m_frameBufferCache.resize(1); 285 m_frameBufferCache.resize(1);
286 m_frameBufferCache[0].setRequiredPreviousFrameIndex( 286 m_frameBufferCache[0].setRequiredPreviousFrameIndex(
287 findRequiredPreviousFrame(0, false)); 287 findRequiredPreviousFrame(0, false));
288 } 288 }
289 m_frameBufferCache[0].setMemoryAllocator(allocator); 289 m_frameBufferCache[0].setMemoryAllocator(allocator);
290 } 290 }
291 291
292 virtual bool canDecodeToYUV() { return false; } 292 virtual bool canDecodeToYUV() { return false; }
293 virtual bool decodeToYUV() { return false; } 293 virtual bool decodeToYUV() { return false; }
294 virtual void setImagePlanes(PassOwnPtr<ImagePlanes>) { } 294 virtual void setImagePlanes(PassOwnPtr<ImagePlanes>) { }
295 virtual bool canDecodeToRGB565() { return false; }
296 virtual bool setDecodeRGB565Enabled(const bool enable) { return false; }
295 297
296 protected: 298 protected:
297 // Calculates the most recent frame whose image data may be needed in 299 // Calculates the most recent frame whose image data may be needed in
298 // order to decode frame |frameIndex|, based on frame disposal methods 300 // order to decode frame |frameIndex|, based on frame disposal methods
299 // and |frameRectIsOpaque|, where |frameRectIsOpaque| signifies whether 301 // and |frameRectIsOpaque|, where |frameRectIsOpaque| signifies whether
300 // the rectangle of frame at |frameIndex| is known to be opaque. 302 // the rectangle of frame at |frameIndex| is known to be opaque.
301 // If no previous frame's data is required, returns WTF::kNotFound. 303 // If no previous frame's data is required, returns WTF::kNotFound.
302 // 304 //
303 // This function requires that the previous frame's 305 // This function requires that the previous frame's
304 // |m_requiredPreviousFrameIndex| member has been set correctly. The 306 // |m_requiredPreviousFrameIndex| member has been set correctly. The
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354 356
355 IntSize m_size; 357 IntSize m_size;
356 bool m_sizeAvailable; 358 bool m_sizeAvailable;
357 bool m_isAllDataReceived; 359 bool m_isAllDataReceived;
358 bool m_failed; 360 bool m_failed;
359 }; 361 };
360 362
361 } // namespace blink 363 } // namespace blink
362 364
363 #endif 365 #endif
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