1/*
2 * Copyright (C) 2012 Google 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef WebMediaConstraints_h
32#define WebMediaConstraints_h
33
34#include "WebCommon.h"
35#include "WebNonCopyable.h"
36#include "WebPrivatePtr.h"
37#include "WebString.h"
38#include "WebVector.h"
39
40namespace blink {
41
42class WebMediaConstraintsPrivate;
43
44struct WebMediaConstraint {
45    WebMediaConstraint()
46    {
47    }
48
49    WebMediaConstraint(WebString name, WebString value)
50        : m_name(name)
51        , m_value(value)
52    {
53    }
54
55    WebString m_name;
56    WebString m_value;
57};
58
59class WebMediaConstraints {
60public:
61    WebMediaConstraints() { }
62    WebMediaConstraints(const WebMediaConstraints& other) { assign(other); }
63    ~WebMediaConstraints() { reset(); }
64
65    WebMediaConstraints& operator=(const WebMediaConstraints& other)
66    {
67        assign(other);
68        return *this;
69    }
70
71    BLINK_PLATFORM_EXPORT void assign(const WebMediaConstraints&);
72
73    BLINK_PLATFORM_EXPORT void reset();
74    bool isNull() const { return m_private.isNull(); }
75
76    BLINK_PLATFORM_EXPORT void getOptionalConstraints(WebVector<WebMediaConstraint>&) const;
77    BLINK_PLATFORM_EXPORT void getMandatoryConstraints(WebVector<WebMediaConstraint>&) const;
78
79    BLINK_PLATFORM_EXPORT bool getOptionalConstraintValue(const WebString& name, WebString& value) const;
80    BLINK_PLATFORM_EXPORT bool getMandatoryConstraintValue(const WebString& name, WebString& value) const;
81
82    BLINK_PLATFORM_EXPORT void initialize();
83    BLINK_PLATFORM_EXPORT void initialize(const WebVector<WebMediaConstraint>& optional, const WebVector<WebMediaConstraint>& mandatory);
84
85private:
86    WebPrivatePtr<WebMediaConstraintsPrivate> m_private;
87};
88
89} // namespace blink
90
91#endif // WebMediaConstraints_h
92