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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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25 */ | 25 */ |
26 | 26 |
27 #ifndef ImageFrame_h | 27 #ifndef ImageFrame_h |
28 #define ImageFrame_h | 28 #define ImageFrame_h |
29 | 29 |
30 #include "platform/PlatformExport.h" | 30 #include "platform/PlatformExport.h" |
31 #include "platform/geometry/IntRect.h" | 31 #include "platform/geometry/IntRect.h" |
32 #include "public/platform/WebVector.h" | 32 #include "public/platform/WebVector.h" |
33 #include "third_party/skia/include/core/SkBitmap.h" | 33 #include "third_party/skia/include/core/SkBitmap.h" |
34 #include "third_party/skia/include/core/SkColorPriv.h" | 34 #include "third_party/skia/include/core/SkColorPriv.h" |
35 #include "third_party/skia/include/core/SkImage.h" | |
35 #include "wtf/Allocator.h" | 36 #include "wtf/Allocator.h" |
36 #include "wtf/Assertions.h" | 37 #include "wtf/Assertions.h" |
37 #include "wtf/PassRefPtr.h" | 38 #include "wtf/PassRefPtr.h" |
38 | 39 |
39 namespace blink { | 40 namespace blink { |
40 | 41 |
41 // ImageFrame represents the decoded image data. This buffer is what all | 42 // ImageFrame represents the decoded image data. This buffer is what all |
42 // decoders write a single frame into. | 43 // decoders write a single frame into. |
43 class PLATFORM_EXPORT ImageFrame final { | 44 class PLATFORM_EXPORT ImageFrame final { |
44 DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); | 45 DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); |
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90 // These do not touch other metadata, only the raw pixel data. | 91 // These do not touch other metadata, only the raw pixel data. |
91 void clearPixelData(); | 92 void clearPixelData(); |
92 void zeroFillPixelData(); | 93 void zeroFillPixelData(); |
93 void zeroFillFrameRect(const IntRect&); | 94 void zeroFillFrameRect(const IntRect&); |
94 | 95 |
95 // Makes this frame have an independent copy of the provided image's | 96 // Makes this frame have an independent copy of the provided image's |
96 // pixel data, so that modifications in one frame are not reflected in | 97 // pixel data, so that modifications in one frame are not reflected in |
97 // the other. Returns whether the copy succeeded. | 98 // the other. Returns whether the copy succeeded. |
98 bool copyBitmapData(const ImageFrame&); | 99 bool copyBitmapData(const ImageFrame&); |
99 | 100 |
101 // Moves the bitmap data from the provided frame to this one, leaving the | |
102 // provided frame empty. Operation is successful only if bitmap data is not | |
103 // marked as done (immutable). Returns whether the move succeeded. | |
Peter Kasting
2016/08/30 06:59:40
Nit: Maybe better second sentence: "This fails if
aleksandar.stojiljkovic
2016/09/21 20:56:57
The issue here is not in destructive modification
| |
104 bool takeBitmapDataIfWritable(ImageFrame*); | |
105 | |
100 // Copies the pixel data at [(startX, startY), (endX, startY)) to the | 106 // Copies the pixel data at [(startX, startY), (endX, startY)) to the |
101 // same X-coordinates on each subsequent row up to but not including | 107 // same X-coordinates on each subsequent row up to but not including |
102 // endY. | 108 // endY. |
103 void copyRowNTimes(int startX, int endX, int startY, int endY) | 109 void copyRowNTimes(int startX, int endX, int startY, int endY) |
104 { | 110 { |
105 ASSERT(startX < width()); | 111 ASSERT(startX < width()); |
106 ASSERT(endX <= width()); | 112 ASSERT(endX <= width()); |
107 ASSERT(startY < height()); | 113 ASSERT(startY < height()); |
108 ASSERT(endY <= height()); | 114 ASSERT(endY <= height()); |
109 const int rowBytes = (endX - startX) * sizeof(PixelData); | 115 const int rowBytes = (endX - startX) * sizeof(PixelData); |
110 const PixelData* const startAddr = getAddr(startX, startY); | 116 const PixelData* const startAddr = getAddr(startX, startY); |
111 for (int destY = startY + 1; destY < endY; ++destY) | 117 for (int destY = startY + 1; destY < endY; ++destY) |
112 memcpy(getAddr(startX, destY), startAddr, rowBytes); | 118 memcpy(getAddr(startX, destY), startAddr, rowBytes); |
113 } | 119 } |
114 | 120 |
115 // Allocates space for the pixel data. Must be called before any pixels | 121 // Allocates space for the pixel data. Must be called before any pixels |
116 // are written. Must only be called once. Returns whether allocation | 122 // are written. Must only be called once. Returns whether allocation |
117 // succeeded. | 123 // succeeded. |
118 bool setSizeAndColorProfile(int newWidth, int newHeight, const ICCProfile& n ewIccProfile); | 124 bool setSizeAndColorProfile(int newWidth, int newHeight, const ICCProfile& n ewIccProfile); |
119 | 125 |
120 bool hasAlpha() const; | 126 bool hasAlpha() const; |
121 const IntRect& originalFrameRect() const { return m_originalFrameRect; } | 127 const IntRect& originalFrameRect() const { return m_originalFrameRect; } |
122 Status getStatus() const { return m_status; } | 128 Status getStatus() const { return m_status; } |
123 unsigned duration() const { return m_duration; } | 129 unsigned duration() const { return m_duration; } |
124 DisposalMethod getDisposalMethod() const { return m_disposalMethod; } | 130 DisposalMethod getDisposalMethod() const { return m_disposalMethod; } |
125 AlphaBlendSource getAlphaBlendSource() const { return m_alphaBlendSource; } | 131 AlphaBlendSource getAlphaBlendSource() const { return m_alphaBlendSource; } |
126 bool premultiplyAlpha() const { return m_premultiplyAlpha; } | 132 bool premultiplyAlpha() const { return m_premultiplyAlpha; } |
127 SkBitmap::Allocator* allocator() const { return m_allocator; } | 133 SkBitmap::Allocator* allocator() const { return m_allocator; } |
128 const SkBitmap& bitmap() const { return m_bitmap; } | 134 |
135 // Returns the bitmap that is the output of decoding. | |
136 const SkBitmap& bitmap() const; | |
137 | |
138 // Create SkImage from bitmap() and return it. If frame is complete, the | |
139 // bitmap is set immutable before creating SkImage to avoid copying bitmap | |
140 // in SkImage::MakeFromBitmap(m_bitmap). | |
141 PassRefPtr<SkImage> finalizePixelsAndGetImage(); | |
Peter Kasting
2016/08/30 06:59:40
Given that this doesn't always finalize the pixels
aleksandar.stojiljkovic
2016/09/21 20:56:57
I like finalizePixelsAndGetImage as it explains wh
| |
142 | |
129 // Returns true if the pixels changed, but the bitmap has not yet been notif ied. | 143 // Returns true if the pixels changed, but the bitmap has not yet been notif ied. |
130 bool pixelsChanged() const { return m_pixelsChanged; } | 144 bool pixelsChanged() const { return m_pixelsChanged; } |
131 size_t requiredPreviousFrameIndex() const { return m_requiredPreviousFrameIn dex; } | 145 size_t requiredPreviousFrameIndex() const { return m_requiredPreviousFrameIn dex; } |
132 void setHasAlpha(bool alpha); | 146 void setHasAlpha(bool alpha); |
133 void setOriginalFrameRect(const IntRect& r) { m_originalFrameRect = r; } | 147 void setOriginalFrameRect(const IntRect& r) { m_originalFrameRect = r; } |
134 void setStatus(Status); | 148 void setStatus(Status); |
135 void setDuration(unsigned duration) { m_duration = duration; } | 149 void setDuration(unsigned duration) { m_duration = duration; } |
136 void setDisposalMethod(DisposalMethod disposalMethod) { m_disposalMethod = d isposalMethod; } | 150 void setDisposalMethod(DisposalMethod disposalMethod) { m_disposalMethod = d isposalMethod; } |
137 void setAlphaBlendSource(AlphaBlendSource alphaBlendSource) { m_alphaBlendSo urce = alphaBlendSource; } | 151 void setAlphaBlendSource(AlphaBlendSource alphaBlendSource) { m_alphaBlendSo urce = alphaBlendSource; } |
138 void setPremultiplyAlpha(bool premultiplyAlpha) { m_premultiplyAlpha = premu ltiplyAlpha; } | 152 void setPremultiplyAlpha(bool premultiplyAlpha) { m_premultiplyAlpha = premu ltiplyAlpha; } |
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217 // The frame that must be decoded before this frame can be decoded. | 231 // The frame that must be decoded before this frame can be decoded. |
218 // WTF::kNotFound if this frame doesn't require any previous frame. | 232 // WTF::kNotFound if this frame doesn't require any previous frame. |
219 // This is used by ImageDecoder::clearCacheExceptFrame(), and will never | 233 // This is used by ImageDecoder::clearCacheExceptFrame(), and will never |
220 // be read for image formats that do not have multiple frames. | 234 // be read for image formats that do not have multiple frames. |
221 size_t m_requiredPreviousFrameIndex; | 235 size_t m_requiredPreviousFrameIndex; |
222 }; | 236 }; |
223 | 237 |
224 } // namespace blink | 238 } // namespace blink |
225 | 239 |
226 #endif | 240 #endif |
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