1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/*
* Copyright (C) 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <algorithm>
#include <wtf/ArgumentCoder.h>
#include <wtf/MediaTime.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/Vector.h>
OBJC_CLASS NSArray;
namespace WTF {
class PrintStream;
}
namespace WebCore {
enum class AddTimeRangeOption : uint8_t {
None,
EliminateSmallGaps,
};
class WEBCORE_EXPORT PlatformTimeRanges final {
WTF_MAKE_TZONE_ALLOCATED_EXPORT(PlatformTimeRanges, WEBCORE_EXPORT);
public:
PlatformTimeRanges();
PlatformTimeRanges(const MediaTime& start, const MediaTime& end);
PlatformTimeRanges copyWithEpsilon(const MediaTime&) const;
static const PlatformTimeRanges& emptyRanges();
static MediaTime timeFudgeFactor();
MediaTime start(unsigned index) const;
MediaTime start(unsigned index, bool& valid) const;
MediaTime end(unsigned index) const;
MediaTime end(unsigned index, bool& valid) const;
MediaTime duration(unsigned index) const;
MediaTime maximumBufferedTime() const;
MediaTime minimumBufferedTime() const;
void invert();
void intersectWith(const PlatformTimeRanges&);
void unionWith(const PlatformTimeRanges&);
PlatformTimeRanges& operator+=(const PlatformTimeRanges&);
PlatformTimeRanges& operator-=(const PlatformTimeRanges&);
unsigned length() const { return m_ranges.size(); }
void add(const MediaTime& start, const MediaTime& end, AddTimeRangeOption = AddTimeRangeOption::None);
void clear();
bool contain(const MediaTime&) const;
size_t find(const MediaTime&) const;
size_t findWithEpsilon(const MediaTime&, const MediaTime& epsilon);
MediaTime nearest(const MediaTime&) const;
MediaTime totalDuration() const;
void dump(PrintStream&) const;
String toString() const;
// We consider all the Ranges to be semi-bounded as follow: [start, end[
struct Range {
MediaTime start;
MediaTime end;
inline bool isEmpty() const
{
return start == end;
}
inline bool isPointInRange(const MediaTime& point) const
{
return start <= point && point < end;
}
inline bool isOverlappingRange(const Range& range) const
{
return isPointInRange(range.start) || isPointInRange(range.end) || range.isPointInRange(start);
}
inline bool isContiguousWithRange(const Range& range) const
{
return range.start == end || range.end == start;
}
inline Range unionWithOverlappingOrContiguousRange(const Range& range) const
{
Range ret;
ret.start = std::min(start, range.start);
ret.end = std::max(end, range.end);
return ret;
}
inline bool isBeforeRange(const Range& range) const
{
return range.start >= end;
}
friend bool operator==(const Range&, const Range&) = default;
};
friend bool operator==(const PlatformTimeRanges&, const PlatformTimeRanges&) = default;
private:
friend struct IPC::ArgumentCoder<PlatformTimeRanges, void>;
PlatformTimeRanges(Vector<Range>&&);
PlatformTimeRanges& operator-=(const Range&);
size_t findLastRangeIndexBefore(const MediaTime& start, const MediaTime& end) const;
Vector<Range> m_ranges;
};
#if PLATFORM(COCOA)
RetainPtr<NSArray> makeNSArray(const PlatformTimeRanges&);
#endif
} // namespace WebCore
namespace WTF {
template<typename> struct LogArgument;
template<> struct LogArgument<WebCore::PlatformTimeRanges> {
static String toString(const WebCore::PlatformTimeRanges& platformTimeRanges) { return platformTimeRanges.toString(); }
};
} // namespace WTF
|
