kwin/plugins/screencast/pipewirecore.cpp
Vlad Zahorodnii c766e5da6d Introduce infrastructure for compositor extensions
The scripting api is not suitable for implementing all features that
should not be implemented in libkwin. For example, the krunner
integration or screencasting are the things that don't belong to be
compiled right into kwin and yet we don't have any other choice.

This change introduces a quick and dirty plugin infrastructure that
can be used to implement things such as colord integration, krunner
integration, etc.
2020-11-24 15:50:33 +00:00

112 lines
2.9 KiB
C++

/*
SPDX-FileCopyrightText: 2018-2020 Red Hat Inc
SPDX-FileCopyrightText: 2020 Aleix Pol Gonzalez <aleixpol@kde.org>
SPDX-FileContributor: Jan Grulich <jgrulich@redhat.com>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "pipewirecore.h"
#include "kwinscreencast_logging.h"
#include <KLocalizedString>
#include <QSocketNotifier>
namespace KWin
{
PipeWireCore::PipeWireCore()
{
pw_init(nullptr, nullptr);
pwCoreEvents.version = PW_VERSION_CORE_EVENTS;
pwCoreEvents.error = &PipeWireCore::onCoreError;
}
PipeWireCore::~PipeWireCore()
{
if (pwMainLoop) {
pw_loop_leave(pwMainLoop);
}
if (pwCore) {
pw_core_disconnect(pwCore);
}
if (pwContext) {
pw_context_destroy(pwContext);
}
if (pwMainLoop) {
pw_loop_destroy(pwMainLoop);
}
}
void PipeWireCore::onCoreError(void* data, uint32_t id, int seq, int res, const char* message)
{
Q_UNUSED(seq)
qCWarning(KWIN_SCREENCAST) << "PipeWire remote error: " << message;
if (id == PW_ID_CORE && res == -EPIPE) {
PipeWireCore *pw = static_cast<PipeWireCore*>(data);
Q_EMIT pw->pipewireFailed(QString::fromUtf8(message));
}
}
bool PipeWireCore::init()
{
pwMainLoop = pw_loop_new(nullptr);
if (!pwMainLoop) {
qCWarning(KWIN_SCREENCAST, "Failed to create PipeWire loop: %s", strerror(errno));
m_error = i18n("Failed to start main PipeWire loop");
return false;
}
pw_loop_enter(pwMainLoop);
QSocketNotifier *notifier = new QSocketNotifier(pw_loop_get_fd(pwMainLoop), QSocketNotifier::Read, this);
connect(notifier, &QSocketNotifier::activated, this, [this] {
int result = pw_loop_iterate (pwMainLoop, 0);
if (result < 0)
qCWarning(KWIN_SCREENCAST) << "pipewire_loop_iterate failed: " << result;
}
);
pwContext = pw_context_new(pwMainLoop, nullptr, 0);
if (!pwContext) {
qCWarning(KWIN_SCREENCAST) << "Failed to create PipeWire context";
m_error = i18n("Failed to create PipeWire context");
return false;
}
pwCore = pw_context_connect(pwContext, nullptr, 0);
if (!pwCore) {
qCWarning(KWIN_SCREENCAST) << "Failed to connect PipeWire context";
m_error = i18n("Failed to connect PipeWire context");
return false;
}
if (pw_loop_iterate(pwMainLoop, 0) < 0) {
qCWarning(KWIN_SCREENCAST) << "Failed to start main PipeWire loop";
m_error = i18n("Failed to start main PipeWire loop");
return false;
}
pw_core_add_listener(pwCore, &coreListener, &pwCoreEvents, this);
return true;
}
QSharedPointer< PipeWireCore > PipeWireCore::self()
{
static QWeakPointer<PipeWireCore> global;
QSharedPointer<PipeWireCore> ret;
if (global) {
ret = global.toStrongRef();
} else {
ret.reset(new PipeWireCore);
ret->init();
global = ret;
}
return ret;
}
} // namespace KWin