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) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "playbackengine/qffmpegrenderer_p.h"
QT_BEGIN_NAMESPACE
namespace QFFmpeg::PlaybackEngineInternal {
Renderer::Renderer(const TimeController &tc, const std::chrono::microseconds &seekPosTimeOffset)
: m_timeController(tc),
m_lastPosition(tc.currentPosition()),
m_seekPos(tc.currentPosition(-seekPosTimeOffset))
{
}
void Renderer::syncSoft(TimePoint tp, qint64 trackTime)
{
QMetaObject::invokeMethod(this, [=]() {
m_timeController.syncSoft(tp, trackTime);
scheduleNextStep(true);
});
}
qint64 Renderer::seekPosition() const
{
return m_seekPos;
}
qint64 Renderer::lastPosition() const
{
return m_lastPosition;
}
void Renderer::setPlaybackRate(float rate)
{
QMetaObject::invokeMethod(this, [=]() {
m_timeController.setPlaybackRate(rate);
onPlaybackRateChanged();
scheduleNextStep();
});
}
void Renderer::doForceStep()
{
if (!m_isStepForced.exchange(true))
QMetaObject::invokeMethod(this, [=]() {
// maybe set m_forceStepMaxPos
if (isAtEnd())
setForceStepDone();
else
scheduleNextStep();
});
}
bool Renderer::isStepForced() const
{
return m_isStepForced;
}
void Renderer::onFinalFrameReceived()
{
render({});
}
void Renderer::render(Frame frame)
{
using namespace std::chrono;
const auto isFrameOutdated = frame.isValid() && frame.end() < m_seekPos;
if (isFrameOutdated) {
emit frameProcessed(frame);
return;
}
m_frames.enqueue(frame);
if (m_frames.size() == 1)
scheduleNextStep();
}
void Renderer::onPauseChanged()
{
m_timeController.setPaused(isPaused());
PlaybackEngineObject::onPauseChanged();
}
bool Renderer::canDoNextStep() const
{
return !m_frames.empty() && (m_isStepForced || PlaybackEngineObject::canDoNextStep());
}
float Renderer::playbackRate() const
{
return m_timeController.playbackRate();
}
int Renderer::timerInterval() const
{
if (auto frame = m_frames.front(); frame.isValid() && !m_isStepForced) {
using namespace std::chrono;
const auto delay = m_timeController.timeFromPosition(frame.pts()) - steady_clock::now();
return std::max(0, static_cast<int>(duration_cast<milliseconds>(delay).count()));
}
return 0;
}
bool Renderer::setForceStepDone()
{
if (!m_isStepForced.exchange(false))
return false;
emit forceStepDone();
return true;
}
void Renderer::doNextStep()
{
auto frame = m_frames.front();
if (setForceStepDone()) {
// if (frame.isValid() && frame.pts() > m_forceStepMaxPos) {
// scheduleNextStep(false);
// return;
// }
}
const auto result = renderInternal(frame);
const bool done = result.timeLeft.count() <= 0;
if (result.timeLeft.count() && frame.isValid()) {
const auto now = std::chrono::steady_clock::now();
m_timeController.sync(now + result.timeLeft, frame.pts());
emit synchronized(now + result.timeLeft, frame.pts());
}
if (done) {
m_frames.dequeue();
if (frame.isValid()) {
m_lastPosition = std::max(frame.pts(), m_lastPosition.load());
m_seekPos = frame.end();
emit frameProcessed(frame);
}
}
setAtEnd(done && !frame.isValid());
scheduleNextStep(false);
}
}
QT_END_NAMESPACE
#include "moc_qffmpegrenderer_p.cpp"
|
