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#pragma once
27
28#include "Color.h"
29#include "DecodingOptions.h"
30#include "ImageBackingStore.h"
31#include "ImageOrientation.h"
32#include "ImageTypes.h"
33#include "IntSize.h"
34#include "NativeImage.h"
35#include <wtf/Seconds.h>
36
37namespace WebCore {
38
39class ScalableImageDecoderFrame {
40public:
41 ScalableImageDecoderFrame();
42 ScalableImageDecoderFrame(const ScalableImageDecoderFrame& other) { operator=(other); }
43
44 ~ScalableImageDecoderFrame();
45
46 ScalableImageDecoderFrame& operator=(const ScalableImageDecoderFrame& other);
47
48 void clear();
49
50 bool initialize(const ImageBackingStore&);
51 bool initialize(const IntSize&, bool premultiplyAlpha);
52
53 void setDecodingStatus(DecodingStatus);
54 DecodingStatus decodingStatus() const;
55
56 bool isInvalid() const { return m_decodingStatus == DecodingStatus::Invalid; }
57 bool isPartial() const { return m_decodingStatus == DecodingStatus::Partial; }
58 bool isComplete() const { return m_decodingStatus == DecodingStatus::Complete; }
59
60 IntSize size() const;
61
62 enum class DisposalMethod { Unspecified, DoNotDispose, RestoreToBackground, RestoreToPrevious };
63 void setDisposalMethod(DisposalMethod method) { m_disposalMethod = method; }
64 DisposalMethod disposalMethod() const { return m_disposalMethod; }
65
66 void setOrientation(ImageOrientation orientation) { m_orientation = orientation; };
67 ImageOrientation orientation() const { return m_orientation; }
68
69 void setDuration(const Seconds& duration) { m_duration = duration; }
70 Seconds duration() const { return m_duration; }
71
72 void setHasAlpha(bool hasAlpha) { m_hasAlpha = hasAlpha; }
73 bool hasAlpha() const { return !hasMetadata() || m_hasAlpha; }
74 bool hasMetadata() const { return !size().isEmpty(); }
75
76 ImageBackingStore* backingStore() const { return m_backingStore ? m_backingStore.get() : nullptr; }
77 bool hasBackingStore() const { return backingStore(); }
78
79private:
80 DecodingStatus m_decodingStatus { DecodingStatus::Invalid };
81
82 std::unique_ptr<ImageBackingStore> m_backingStore;
83 DisposalMethod m_disposalMethod { DisposalMethod::Unspecified };
84
85 ImageOrientation m_orientation { DefaultImageOrientation };
86 Seconds m_duration;
87 bool m_hasAlpha { true };
88};
89
90}
91