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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) 2008, 2009 Google, Inc. | 3 * Copyright (C) 2008, 2009 Google, Inc. |
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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72 m_bitmap.reset(); | 72 m_bitmap.reset(); |
73 m_status = FrameEmpty; | 73 m_status = FrameEmpty; |
74 // NOTE: Do not reset other members here; clearFrameBufferCache() | 74 // NOTE: Do not reset other members here; clearFrameBufferCache() |
75 // calls this to free the bitmap data, but other functions like | 75 // calls this to free the bitmap data, but other functions like |
76 // initFrameBuffer() and frameComplete() may still need to read | 76 // initFrameBuffer() and frameComplete() may still need to read |
77 // other metadata out of this frame later. | 77 // other metadata out of this frame later. |
78 } | 78 } |
79 | 79 |
80 void ImageFrame::zeroFillPixelData() { | 80 void ImageFrame::zeroFillPixelData() { |
81 m_bitmap.eraseARGB(0, 0, 0, 0); | 81 m_bitmap.eraseARGB(0, 0, 0, 0); |
82 m_hasAlpha = true; | |
83 } | 82 } |
84 | 83 |
85 bool ImageFrame::copyBitmapData(const ImageFrame& other) { | 84 bool ImageFrame::copyBitmapData(const ImageFrame& other) { |
86 DCHECK_NE(this, &other); | 85 DCHECK_NE(this, &other); |
87 m_hasAlpha = other.m_hasAlpha; | 86 m_hasAlpha = other.m_hasAlpha; |
88 m_bitmap.reset(); | 87 m_bitmap.reset(); |
89 return other.m_bitmap.copyTo(&m_bitmap, other.m_bitmap.colorType()); | 88 return other.m_bitmap.copyTo(&m_bitmap, other.m_bitmap.colorType()); |
90 } | 89 } |
91 | 90 |
92 bool ImageFrame::takeBitmapDataIfWritable(ImageFrame* other) { | 91 bool ImageFrame::takeBitmapDataIfWritable(ImageFrame* other) { |
93 DCHECK(other); | 92 DCHECK(other); |
94 DCHECK_EQ(FrameComplete, other->m_status); | 93 DCHECK_EQ(FrameComplete, other->m_status); |
95 DCHECK_EQ(FrameEmpty, m_status); | 94 DCHECK_EQ(FrameEmpty, m_status); |
96 DCHECK_NE(this, other); | 95 DCHECK_NE(this, other); |
97 if (other->m_bitmap.isImmutable()) | 96 if (other->m_bitmap.isImmutable()) |
98 return false; | 97 return false; |
99 m_hasAlpha = other->m_hasAlpha; | 98 m_hasAlpha = other->m_hasAlpha; |
100 m_bitmap.reset(); | 99 m_bitmap.reset(); |
101 m_bitmap.swap(other->m_bitmap); | 100 m_bitmap.swap(other->m_bitmap); |
102 other->m_status = FrameEmpty; | 101 other->m_status = FrameEmpty; |
103 return true; | 102 return true; |
104 } | 103 } |
105 | 104 |
106 bool ImageFrame::allocatePixelData(int newWidth, | 105 bool ImageFrame::allocatePixelData(int newWidth, |
107 int newHeight, | 106 int newHeight, |
108 sk_sp<SkColorSpace> colorSpace) { | 107 sk_sp<SkColorSpace> colorSpace) { |
109 // allocatePixelData() should only be called once. | 108 // allocatePixelData() should only be called once. |
110 DCHECK(!width() && !height()); | 109 DCHECK(!width() && !height()); |
111 | 110 |
112 m_bitmap.setInfo(SkImageInfo::MakeN32( | 111 SkAlphaType alphaType = kOpaque_SkAlphaType; |
113 newWidth, newHeight, | 112 if (m_hasAlpha) { |
114 m_premultiplyAlpha ? kPremul_SkAlphaType : kUnpremul_SkAlphaType, | 113 alphaType = |
115 std::move(colorSpace))); | 114 m_premultiplyAlpha ? kPremul_SkAlphaType : kUnpremul_SkAlphaType; |
| 115 } |
| 116 |
| 117 m_bitmap.setInfo(SkImageInfo::MakeN32(newWidth, newHeight, alphaType, |
| 118 std::move(colorSpace))); |
116 return m_bitmap.tryAllocPixels(m_allocator, 0); | 119 return m_bitmap.tryAllocPixels(m_allocator, 0); |
117 } | 120 } |
118 | 121 |
119 bool ImageFrame::hasAlpha() const { | 122 bool ImageFrame::hasAlpha() const { |
120 return m_hasAlpha; | 123 return m_hasAlpha; |
121 } | 124 } |
122 | 125 |
123 sk_sp<SkImage> ImageFrame::finalizePixelsAndGetImage() { | 126 sk_sp<SkImage> ImageFrame::finalizePixelsAndGetImage() { |
124 DCHECK_EQ(FrameComplete, m_status); | 127 DCHECK_EQ(FrameComplete, m_status); |
125 m_bitmap.setImmutable(); | 128 m_bitmap.setImmutable(); |
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202 // If the frame is not fully loaded, there will be transparent pixels, | 205 // If the frame is not fully loaded, there will be transparent pixels, |
203 // so we can't tell skia we're opaque, even for image types that logically | 206 // so we can't tell skia we're opaque, even for image types that logically |
204 // always are (e.g. jpeg). | 207 // always are (e.g. jpeg). |
205 if (!m_hasAlpha && m_status == FrameComplete) | 208 if (!m_hasAlpha && m_status == FrameComplete) |
206 return kOpaque_SkAlphaType; | 209 return kOpaque_SkAlphaType; |
207 | 210 |
208 return m_premultiplyAlpha ? kPremul_SkAlphaType : kUnpremul_SkAlphaType; | 211 return m_premultiplyAlpha ? kPremul_SkAlphaType : kUnpremul_SkAlphaType; |
209 } | 212 } |
210 | 213 |
211 } // namespace blink | 214 } // namespace blink |
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