1/*
2 * Copyright (C) 2016 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "ImageFrame.h"
28
29#include <wtf/NeverDestroyed.h>
30
31namespace WebCore {
32
33ImageFrame::ImageFrame()
34{
35}
36
37ImageFrame::~ImageFrame()
38{
39 clearImage();
40}
41
42const ImageFrame& ImageFrame::defaultFrame()
43{
44 static NeverDestroyed<ImageFrame> sharedInstance;
45 return sharedInstance;
46}
47
48ImageFrame& ImageFrame::operator=(const ImageFrame& other)
49{
50 if (this == &other)
51 return *this;
52
53 m_decodingStatus = other.m_decodingStatus;
54 m_size = other.m_size;
55
56 m_nativeImage = other.m_nativeImage;
57 m_subsamplingLevel = other.m_subsamplingLevel;
58 m_decodingOptions = other.m_decodingOptions;
59
60 m_orientation = other.m_orientation;
61 m_duration = other.m_duration;
62 m_hasAlpha = other.m_hasAlpha;
63 return *this;
64}
65
66void ImageFrame::setDecodingStatus(DecodingStatus decodingStatus)
67{
68 ASSERT(decodingStatus != DecodingStatus::Decoding);
69 m_decodingStatus = decodingStatus;
70}
71
72DecodingStatus ImageFrame::decodingStatus() const
73{
74 ASSERT(m_decodingStatus != DecodingStatus::Decoding);
75 return m_decodingStatus;
76}
77
78unsigned ImageFrame::clearImage()
79{
80 if (!hasNativeImage())
81 return 0;
82
83 unsigned frameBytes = this->frameBytes();
84
85 clearNativeImageSubimages(m_nativeImage);
86 m_nativeImage = nullptr;
87 m_decodingOptions = DecodingOptions();
88
89 return frameBytes;
90}
91
92unsigned ImageFrame::clear()
93{
94 unsigned frameBytes = clearImage();
95 *this = ImageFrame();
96 return frameBytes;
97}
98
99IntSize ImageFrame::size() const
100{
101 return m_size;
102}
103
104bool ImageFrame::hasNativeImage(const Optional<SubsamplingLevel>& subsamplingLevel) const
105{
106 return m_nativeImage && (!subsamplingLevel || *subsamplingLevel >= m_subsamplingLevel);
107}
108
109bool ImageFrame::hasFullSizeNativeImage(const Optional<SubsamplingLevel>& subsamplingLevel) const
110{
111 return hasNativeImage(subsamplingLevel) && (m_decodingOptions.isSynchronous() || m_decodingOptions.hasFullSize());
112}
113
114bool ImageFrame::hasDecodedNativeImageCompatibleWithOptions(const Optional<SubsamplingLevel>& subsamplingLevel, const DecodingOptions& decodingOptions) const
115{
116 return hasNativeImage(subsamplingLevel) && m_decodingOptions.isAsynchronousCompatibleWith(decodingOptions);
117}
118
119Color ImageFrame::singlePixelSolidColor() const
120{
121 if (!hasNativeImage() || m_size != IntSize(1, 1))
122 return Color();
123
124 return nativeImageSinglePixelSolidColor(m_nativeImage);
125}
126
127}
128