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/*
* KMix -- KDE's full featured mini mixer
*
* Copyright 2006-2007 Christian Esken <esken@kde.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "core/kmixdevicemanager.h"
#include <QRegExp>
#include <QString>
#include <QTimer>
#include "kmix_debug.h"
#include <solid/device.h>
#include <solid/devicenotifier.h>
static const int HOTPLUG_DELAY = 500; // settling delay, milliseconds
KMixDeviceManager* KMixDeviceManager::s_KMixDeviceManager = 0;
KMixDeviceManager* KMixDeviceManager::instance()
{
if ( s_KMixDeviceManager == 0 ) {
s_KMixDeviceManager = new KMixDeviceManager();
}
return s_KMixDeviceManager;
}
void KMixDeviceManager::initHotplug()
{
qCDebug(KMIX_LOG);
connect(Solid::DeviceNotifier::instance(), &Solid::DeviceNotifier::deviceAdded,
this, &KMixDeviceManager::pluggedSlot);
connect(Solid::DeviceNotifier::instance(), &Solid::DeviceNotifier::deviceRemoved,
this, &KMixDeviceManager::unpluggedSlot);
}
QString KMixDeviceManager::getUDI_ALSA(int num)
{
return (QString("hw%1").arg(num));
}
QString KMixDeviceManager::getUDI_OSS(const QString &devname)
{
return (devname);
}
static bool isSoundDevice(const QString &udi)
{
QRegExp rx("/sound/"); // any UDI mentioning sound
return (udi.contains(rx));
}
static int matchDevice(const QString &udi)
{
QRegExp rx("/sound/card(\\d+)$"); // match sound card and ID number
if (!udi.contains(rx)) return (-1); // UDI not recognised
return (rx.cap(1).toInt()); // assume conversion succeeds
}
void KMixDeviceManager::pluggedSlot(const QString &udi)
{
if (!isSoundDevice(udi)) return; // ignore non-sound devices
Solid::Device device(udi);
if (!device.isValid())
{
qCWarning(KMIX_LOG) << "Invalid device for UDI" << udi;
return;
}
// Solid device UDIs for a plugged sound card are of the form:
//
// /org/kde/solid/udev/sys/devices/pci0000:00/0000:00:13.2/usb2/2-4/2-4.1/2-4.1:1.0/sound/card3
// /org/kde/solid/udev/sys/devices/pci0000:00/0000:00:13.2/usb2/2-4/2-4.1/2-4.1:1.0/sound/card3/pcmC3D0p
// /org/kde/solid/udev/sys/devices/pci0000:00/0000:00:13.2/usb2/2-4/2-4.1/2-4.1:1.0/sound/card3/...
//
// The first of these is considered to be the canonical form and triggers
// device hotplug, after a settling delay.
//
// Note that the Solid device UDI is not used anwhere else within KMix,
// what is referred to as a "UDI" elsewhere is as described in the
// comment for Mixer::udi() in core/mixer.h and generated by getUDI_ALSA()
// above. Solid only ever supported ALSA anyway, even in KDE4, so we can
// assume the driver is ALSA here without having to ask. See
// https://community.kde.org/Frameworks/Porting_Notes#Solid_Changes
const int dev = matchDevice(udi);
if (dev!=-1)
{
qCDebug(KMIX_LOG) << "udi" << udi;
const QString alsaUDI = getUDI_ALSA(dev);
qCDebug(KMIX_LOG) << "ALSA udi" << alsaUDI << "device" << dev;
QTimer::singleShot(HOTPLUG_DELAY, [=](){ emit plugged("ALSA", alsaUDI, dev); });
} // allow hotplug to settle
else qCDebug(KMIX_LOG) << "Ignored unrecognised UDI" << udi;
}
void KMixDeviceManager::unpluggedSlot(const QString &udi)
{
if (!isSoundDevice(udi)) return; // ignore non-sound devices
// At this point the device has already been unplugged by the user.
// Solid doesn't know anything about the device except the UDI, but
// that can be matched using the same logic as for plugging.
const int dev = matchDevice(udi);
if (dev!=-1)
{
qCDebug(KMIX_LOG) << "udi" << udi;
const QString alsaUDI = getUDI_ALSA(dev);
qCDebug(KMIX_LOG) << "ALSA udi" << alsaUDI << "device" << dev;
QTimer::singleShot(HOTPLUG_DELAY, [=](){ emit unplugged(alsaUDI); });
} // allow hotplug to settle
else qCDebug(KMIX_LOG) << "Ignored unrecognised UDI" << udi;
}
void KMixDeviceManager::setHotpluggingBackends(const QString& backendName)
{
qCDebug(KMIX_LOG) << "using" << backendName;
_hotpluggingBackend = backendName;
}
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