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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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77 void ImageFrame::ZeroFillPixelData() { | 77 void ImageFrame::ZeroFillPixelData() { |
78 bitmap_.eraseARGB(0, 0, 0, 0); | 78 bitmap_.eraseARGB(0, 0, 0, 0); |
79 has_alpha_ = true; | 79 has_alpha_ = true; |
80 } | 80 } |
81 | 81 |
82 bool ImageFrame::CopyBitmapData(const ImageFrame& other) { | 82 bool ImageFrame::CopyBitmapData(const ImageFrame& other) { |
83 DCHECK_NE(this, &other); | 83 DCHECK_NE(this, &other); |
84 has_alpha_ = other.has_alpha_; | 84 has_alpha_ = other.has_alpha_; |
85 bitmap_.reset(); | 85 bitmap_.reset(); |
86 SkImageInfo info = other.bitmap_.info(); | 86 SkImageInfo info = other.bitmap_.info(); |
87 return bitmap_.tryAllocPixels(info) && | 87 if (!bitmap_.tryAllocPixels(info)) { |
88 other.bitmap_.readPixels(info, bitmap_.getPixels(), bitmap_.rowBytes(), | 88 return false; |
| 89 } |
| 90 |
| 91 status_ = kFrameAllocated; |
| 92 return other.bitmap_.readPixels(info, bitmap_.getPixels(), bitmap_.rowBytes(), |
89 0, 0); | 93 0, 0); |
90 } | 94 } |
91 | 95 |
92 bool ImageFrame::TakeBitmapDataIfWritable(ImageFrame* other) { | 96 bool ImageFrame::TakeBitmapDataIfWritable(ImageFrame* other) { |
93 DCHECK(other); | 97 DCHECK(other); |
94 DCHECK_EQ(kFrameComplete, other->status_); | 98 DCHECK_EQ(kFrameComplete, other->status_); |
95 DCHECK_EQ(kFrameEmpty, status_); | 99 DCHECK_EQ(kFrameEmpty, status_); |
96 DCHECK_NE(this, other); | 100 DCHECK_NE(this, other); |
97 if (other->bitmap_.isImmutable()) | 101 if (other->bitmap_.isImmutable()) |
98 return false; | 102 return false; |
99 has_alpha_ = other->has_alpha_; | 103 has_alpha_ = other->has_alpha_; |
100 bitmap_.reset(); | 104 bitmap_.reset(); |
101 bitmap_.swap(other->bitmap_); | 105 bitmap_.swap(other->bitmap_); |
102 other->status_ = kFrameEmpty; | 106 other->status_ = kFrameEmpty; |
| 107 status_ = kFrameAllocated; |
103 return true; | 108 return true; |
104 } | 109 } |
105 | 110 |
106 bool ImageFrame::AllocatePixelData(int new_width, | 111 bool ImageFrame::AllocatePixelData(int new_width, |
107 int new_height, | 112 int new_height, |
108 sk_sp<SkColorSpace> color_space) { | 113 sk_sp<SkColorSpace> color_space) { |
109 // AllocatePixelData() should only be called once. | 114 // AllocatePixelData() should only be called once. |
110 DCHECK(!Width() && !Height()); | 115 DCHECK(!Width() && !Height()); |
111 | 116 |
112 bitmap_.setInfo(SkImageInfo::MakeN32( | 117 bitmap_.setInfo(SkImageInfo::MakeN32( |
113 new_width, new_height, | 118 new_width, new_height, |
114 premultiply_alpha_ ? kPremul_SkAlphaType : kUnpremul_SkAlphaType, | 119 premultiply_alpha_ ? kPremul_SkAlphaType : kUnpremul_SkAlphaType, |
115 std::move(color_space))); | 120 std::move(color_space))); |
116 return bitmap_.tryAllocPixels(allocator_); | 121 bool allocated = bitmap_.tryAllocPixels(allocator_); |
| 122 if (allocated) |
| 123 status_ = kFrameAllocated; |
| 124 |
| 125 return allocated; |
117 } | 126 } |
118 | 127 |
119 bool ImageFrame::HasAlpha() const { | 128 bool ImageFrame::HasAlpha() const { |
120 return has_alpha_; | 129 return has_alpha_; |
121 } | 130 } |
122 | 131 |
123 sk_sp<SkImage> ImageFrame::FinalizePixelsAndGetImage() { | 132 sk_sp<SkImage> ImageFrame::FinalizePixelsAndGetImage() { |
124 DCHECK_EQ(kFrameComplete, status_); | 133 DCHECK_EQ(kFrameComplete, status_); |
125 bitmap_.setImmutable(); | 134 bitmap_.setImmutable(); |
126 return SkImage::MakeFromBitmap(bitmap_); | 135 return SkImage::MakeFromBitmap(bitmap_); |
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202 // If the frame is not fully loaded, there will be transparent pixels, | 211 // 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 | 212 // so we can't tell skia we're opaque, even for image types that logically |
204 // always are (e.g. jpeg). | 213 // always are (e.g. jpeg). |
205 if (!has_alpha_ && status_ == kFrameComplete) | 214 if (!has_alpha_ && status_ == kFrameComplete) |
206 return kOpaque_SkAlphaType; | 215 return kOpaque_SkAlphaType; |
207 | 216 |
208 return premultiply_alpha_ ? kPremul_SkAlphaType : kUnpremul_SkAlphaType; | 217 return premultiply_alpha_ ? kPremul_SkAlphaType : kUnpremul_SkAlphaType; |
209 } | 218 } |
210 | 219 |
211 } // namespace blink | 220 } // namespace blink |
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