1/*
2 * Copyright (C) 2017 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. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "ISOProtectionSchemeInfoBox.h"
28
29#include "ISOSchemeInformationBox.h"
30#include "ISOSchemeTypeBox.h"
31#include <JavaScriptCore/DataView.h>
32
33using JSC::DataView;
34
35namespace WebCore {
36
37bool ISOProtectionSchemeInfoBox::parse(DataView& view, unsigned& offset)
38{
39 unsigned localOffset = offset;
40 if (!ISOBox::parse(view, localOffset))
41 return false;
42
43 if (!m_originalFormatBox.read(view, localOffset))
44 return false;
45
46 if (localOffset - offset == m_size) {
47 offset = localOffset;
48 return true;
49 }
50
51 auto optionalBoxType = ISOBox::peekBox(view, localOffset);
52 if (!optionalBoxType)
53 return false;
54
55 if (optionalBoxType.value().first == ISOSchemeTypeBox::boxTypeName()) {
56 m_schemeTypeBox = std::make_unique<ISOSchemeTypeBox>();
57 if (!m_schemeTypeBox->read(view, localOffset))
58 return false;
59
60 if (localOffset - offset == m_size) {
61 offset = localOffset;
62 return true;
63 }
64
65 optionalBoxType = ISOBox::peekBox(view, localOffset);
66 if (!optionalBoxType)
67 return false;
68 }
69
70 if (optionalBoxType.value().first == ISOSchemeInformationBox::boxTypeName()) {
71 m_schemeInformationBox = std::make_unique<ISOSchemeInformationBox>();
72 if (!m_schemeInformationBox->read(view, localOffset))
73 return false;
74
75 if (localOffset - offset != m_size)
76 return false;
77 }
78
79 offset = localOffset;
80 return true;
81}
82
83}
84