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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/***
Olive - Non-Linear Video Editor
Copyright (C) 2019 Olive Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
***/
#include "playbackcache.h"
#include <QDateTime>
OLIVE_NAMESPACE_ENTER
void PlaybackCache::Invalidate(const TimeRange &r)
{
QMutexLocker locker(lock());
NoLockInvalidate(r);
locker.unlock();
emit Invalidated(r);
}
void PlaybackCache::InvalidateAll()
{
QMutexLocker locker(lock());
if (length_.isNull()) {
return;
}
TimeRange invalidate_range(0, length_);
NoLockInvalidate(invalidate_range);
locker.unlock();
emit Invalidated(invalidate_range);
}
void PlaybackCache::SetLength(const rational &r)
{
QMutexLocker locker(lock());
if (length_ == r) {
// Same length - do nothing
return;
}
LengthChangedEvent(length_, r);
TimeRange range_diff(length_, r);
if (r.isNull()) {
invalidated_.clear();
jobs_.clear();
} else if (r > length_) {
// If new length is greater, simply extend the invalidated range for now
invalidated_.InsertTimeRange(range_diff);
jobs_.append({range_diff, QDateTime::currentMSecsSinceEpoch()});
} else {
// If new length is smaller, removed hashes
invalidated_.RemoveTimeRange(range_diff);
RemoveRangeFromJobs(range_diff);
}
rational old_length = length_;
length_ = r;
locker.unlock();
if (r > old_length) {
emit Invalidated(range_diff);
} else {
emit Validated(range_diff);
}
}
void PlaybackCache::Shift(const rational &from, const rational &to)
{
if (from == to) {
return;
}
QMutexLocker locker(lock());
// An region between `from` and `to` will be inserted or spliced out
TimeRangeList ranges_to_shift = invalidated_.Intersects(TimeRange(from, RATIONAL_MAX));
// Remove everything from the minimum point
TimeRange remove_range = TimeRange(qMin(from, to), RATIONAL_MAX);
NoLockValidate(remove_range);
RemoveRangeFromJobs(remove_range);
// Shift everything in our ranges to shift list
// (`diff` is POSITIVE when moving forward -> and NEGATIVE when moving backward <-)
rational diff = to - from;
foreach (const TimeRange& r, ranges_to_shift) {
NoLockInvalidate(r + diff);
}
ShiftEvent(from, to);
length_ += diff;
if (diff > rational()) {
// If shifting forward, add this section to the invalidated region
NoLockInvalidate(TimeRange(from, to));
}
locker.unlock();
// Emit signals
emit Validated(remove_range);
foreach (const TimeRange& r, ranges_to_shift) {
emit Invalidated(r + diff);
}
if (diff > rational()) {
emit Invalidated(TimeRange(from, to));
}
emit Shifted(from, to);
}
void PlaybackCache::NoLockInvalidate(const TimeRange &r)
{
Q_ASSERT(r.in() != r.out());
invalidated_.InsertTimeRange(r);
RemoveRangeFromJobs(r);
qint64 job_time = QDateTime::currentMSecsSinceEpoch();
jobs_.append({r, job_time});
InvalidateEvent(r);
}
void PlaybackCache::NoLockValidate(const TimeRange &r)
{
invalidated_.RemoveTimeRange(r);
}
void PlaybackCache::LengthChangedEvent(const rational &, const rational &)
{
}
void PlaybackCache::InvalidateEvent(const TimeRange &)
{
}
void PlaybackCache::ShiftEvent(const rational &, const rational &)
{
}
void PlaybackCache::RemoveRangeFromJobs(const TimeRange &remove)
{
// Code shamelessly copied from TimeRangeList::RemoveTimeRange
for (int i=0;i<jobs_.size();i++) {
JobIdentifier& job = jobs_[i];
TimeRange& compare = job.range;
if (remove.Contains(compare)) {
// This element is entirely encompassed in this range, remove it
jobs_.removeAt(i);
i--;
} else if (compare.Contains(remove, false, false)) {
// The remove range is within this element, only choice is to split the element into two
jobs_.append({TimeRange(remove.out(), compare.out()), job.job_time});
compare.set_out(remove.in());
} else if (compare.in() < remove.in() && compare.out() > remove.in()) {
// This element's out point overlaps the range's in, we'll trim it
compare.set_out(remove.in());
} else if (compare.in() < remove.out() && compare.out() > remove.out()) {
// This element's in point overlaps the range's out, we'll trim it
compare.set_in(remove.out());
}
}
}
OLIVE_NAMESPACE_EXIT
|
