Qt
Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
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qffmpegrecordingengineutils.cpp
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1// Copyright (C) 2024 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include "recordingengine/qffmpegrecordingengineutils_p.h"
5#include "recordingengine/qffmpegencoderthread_p.h"
6#include "private/qplatformaudiobufferinput_p.h"
7#include "private/qplatformvideoframeinput_p.h"
8
9QT_BEGIN_NAMESPACE
10
11namespace QFFmpeg {
12
13template <typename F>
14void doWithMediaFrameInput(QObject *source, F &&f)
15{
16 if (auto videoFrameInput = qobject_cast<QPlatformVideoFrameInput *>(source))
17 f(videoFrameInput);
18 else if (auto audioBufferInput = qobject_cast<QPlatformAudioBufferInput *>(source))
19 f(audioBufferInput);
20}
21
22void setEncoderInterface(QObject *source, QMediaInputEncoderInterface *interface)
23{
24 doWithMediaFrameInput(source, [&](auto source) {
25 using Source = std::remove_pointer_t<decltype(source)>;
26
27 source->setEncoderInterface(interface);
28 if (interface)
29 // Postpone emit 'encoderUpdated' as the encoding pipeline may be not
30 // completely ready at the moment. The case is calling QMediaRecorder::stop
31 // upon handling 'readyToSendFrame'
32 QMetaObject::invokeMethod(source, &Source::encoderUpdated, Qt::QueuedConnection);
33 else
34 emit source->encoderUpdated();
35 });
36}
37
38void setEncoderUpdateConnection(QObject *source, EncoderThread *encoder)
39{
40 doWithMediaFrameInput(source, [&](auto source) {
41 using Source = std::remove_pointer_t<decltype(source)>;
42 QObject::connect(encoder, &EncoderThread::canPushFrameChanged, source,
43 &Source::encoderUpdated);
44 });
45}
46
47void disconnectEncoderFromSource(EncoderThread *encoder)
48{
49 QObject *source = encoder->source();
50 if (!source)
51 return;
52
53 // We should address the dependency AudioEncoder from QFFmpegAudioInput to
54 // set null source here.
55 // encoder->setSource(nullptr);
56
57 QObject::disconnect(source, nullptr, encoder, nullptr);
58 setEncoderInterface(source, nullptr);
59}
60
61} // namespace QFFmpeg
62
63QT_END_NAMESPACE
QObject
\inmodule QtCore
Definition qobject.h:103
QObject::connect
static QMetaObject::Connection connect(const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
\threadsafe
Definition qobject.cpp:2960
QObject::disconnect
static bool disconnect(const QObject *sender, const char *signal, const QObject *receiver, const char *member)
\threadsafe
Definition qobject.cpp:3236
QFFmpeg::setEncoderInterface
void setEncoderInterface(QObject *source, QMediaInputEncoderInterface *interface)
Definition qffmpegrecordingengineutils.cpp:22
QFFmpeg::doWithMediaFrameInput
void doWithMediaFrameInput(QObject *source, F &&f)
Definition qffmpegrecordingengineutils.cpp:14
QFFmpeg::setEncoderUpdateConnection
void setEncoderUpdateConnection(QObject *source, EncoderThread *encoder)
Definition qffmpegrecordingengineutils.cpp:38
QFFmpeg::disconnectEncoderFromSource
void disconnectEncoderFromSource(EncoderThread *encoder)
Definition qffmpegrecordingengineutils.cpp:47
QT_BEGIN_NAMESPACE
Combined button and popup list for selecting options.
Definition qstandardpaths_haiku.cpp:21
QT_END_NAMESPACE
Definition qsharedpointer.cpp:1590
Qt::QueuedConnection
@ QueuedConnection
Definition qnamespace.h:1286
interface
DBusConnection const char DBusError DBusBusType DBusError return DBusConnection DBusHandleMessageFunction void DBusFreeFunction return DBusConnection return DBusConnection return const char DBusError return DBusConnection DBusMessage dbus_uint32_t return DBusConnection dbus_bool_t DBusConnection DBusAddWatchFunction DBusRemoveWatchFunction DBusWatchToggledFunction void DBusFreeFunction return DBusConnection DBusDispatchStatusFunction void DBusFreeFunction DBusTimeout return DBusTimeout return DBusWatch return DBusWatch unsigned int return DBusError const DBusError return const DBusMessage return DBusMessage return DBusMessage return DBusMessage return DBusMessage return DBusMessage return DBusMessageIter int const void return DBusMessageIter DBusMessageIter return DBusMessageIter void DBusMessageIter void int return DBusMessage DBusMessageIter return DBusMessageIter return DBusMessageIter DBusMessageIter const char const char const char * interface
Definition qdbus_symbols_p.h:355
qffmpegencoderthread_p.h
qffmpegrecordingengineutils_p.h
f
GLfloat GLfloat f
Definition qopengles2ext.h:795
source
GLsizei GLsizei GLchar * source
Definition qopengles2ext.h:952
emit
#define emit
Definition qtmetamacros.h:49
QMetaObject::invokeMethod
static bool invokeMethod(QObject *obj, const char *member, Qt::ConnectionType, QGenericReturnArgument ret, QGenericArgument val0=QGenericArgument(nullptr), QGenericArgument val1=QGenericArgument(), QGenericArgument val2=QGenericArgument(), QGenericArgument val3=QGenericArgument(), QGenericArgument val4=QGenericArgument(), QGenericArgument val5=QGenericArgument(), QGenericArgument val6=QGenericArgument(), QGenericArgument val7=QGenericArgument(), QGenericArgument val8=QGenericArgument(), QGenericArgument val9=QGenericArgument())
\threadsafe This is an overloaded member function, provided for convenience. It differs from the abov...
Definition qmetaobject.cpp:1544