drumstick  2.0.0
sysinfo.cpp

Prints information about the ALSA sequencer subsystem

/*
MIDI Sequencer C++ library
Copyright (C) 2006-2020, Pedro Lopez-Cabanillas <plcl@users.sf.net>
This library 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 library 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 <QCommandLineParser>
#include <QStringList>
#include <QTextStream>
QString PGM_NAME = QStringLiteral("drumstick-sysinfo");
QString PGM_DESCRIPTION = QStringLiteral("ALSA Sequencer System Info");
QTextStream cout(stdout, QIODevice::WriteOnly);
QTextStream cerr(stderr, QIODevice::WriteOnly);
using namespace drumstick::ALSA;
void queryTimers()
{
cout << endl << "ALSA Timers" << endl;
TimerQuery* query = new TimerQuery("hw", 0);
cout << "type___ Name________________ c/s/C/D/S Freq." << endl;
TimerIdList lst = query->getTimers();
TimerIdList::ConstIterator it;
for( it = lst.constBegin(); it != lst.constEnd(); ++it )
{
TimerId id = *it;
try {
Timer* timer = new Timer(id, SND_TIMER_OPEN_NONBLOCK);
TimerInfo info = timer->getTimerInfo();
cout << qSetFieldWidth(8) << left << info.getId()
<< qSetFieldWidth(20) << left << info.getName().left(20)
<< qSetFieldWidth(0) << " "
<< id.getClass() << "/" << id.getSlaveClass() << "/"
<< id.getCard() << "/" << id.getDevice() << "/"
<< id.getSubdevice() << " ";
if( info.isSlave() ) {
cout << "SLAVE";
} else {
long freq = info.getFrequency();
cout << freq << " Hz";
}
cout << endl;
delete timer;
} catch (const SequencerError& err) {
cerr << "Error opening timer:" << err.qstrError();
}
}
delete query;
}
void queryQueues(MidiClient* c)
{
cout << endl << "ALSA Queues" << endl;
cout << "id Queue_Name__________ Timer_Name__________ owner status "
<< " state PPQ Tempo BPM Ticks Time" << endl;
QList<int> queues = c->getAvailableQueues();
foreach( int q, queues ) {
MidiQueue* queue = new MidiQueue(c, q);
if (queue != nullptr) {
QueueInfo qinfo = queue->getInfo();
QueueStatus qsts = queue->getStatus();
QueueTempo qtmp = queue->getTempo();
QueueTimer qtmr = queue->getTimer();
TimerId tid(qtmr.getId());
QString tname;
try {
Timer* timer = new Timer(tid, SND_TIMER_OPEN_NONBLOCK);
TimerInfo tinfo = timer->getTimerInfo();
tname = tinfo.getName();
delete timer;
} catch (...) {
tname = "inaccessible";
}
cout << qSetFieldWidth(3) << left << qinfo.getId()
<< qSetFieldWidth(20) << qinfo.getName().left(20)
<< qSetFieldWidth(0) << " "
<< qSetFieldWidth(20) << tname.left(20)
<< qSetFieldWidth(6) << right << qinfo.getOwner()
<< qSetFieldWidth(7) << (qinfo.isLocked() ? "locked" : "free")
<< qSetFieldWidth(8) << (qsts.isRunning() ? "running" : "stopped")
<< qSetFieldWidth(4) << qtmp.getPPQ()
<< qSetFieldWidth(7) << qtmp.getRealBPM()
<< qSetFieldWidth(4) << qtmp.getNominalBPM()
<< qSetFieldWidth(8) << qsts.getTickTime()
<< qSetFieldWidth(0) << " " << qsts.getClockTime()
<< endl;
delete queue;
}
}
}
QString clientTypeName(snd_seq_client_type_t ctype)
{
if (ctype == SND_SEQ_USER_CLIENT)
return "User";
if (ctype == SND_SEQ_KERNEL_CLIENT)
return "Kernel";
return "Unknown";
}
QString portTypeNames(int ptype)
{
QStringList lst;
if ((ptype & SND_SEQ_PORT_TYPE_HARDWARE) != 0)
lst << "Hardware";
if ((ptype & SND_SEQ_PORT_TYPE_SOFTWARE) != 0)
lst << "Software";
if ((ptype & SND_SEQ_PORT_TYPE_PORT) != 0)
lst << "Port";
if ((ptype & SND_SEQ_PORT_TYPE_DIRECT_SAMPLE) != 0)
lst << "Direct Sample";
if ((ptype & SND_SEQ_PORT_TYPE_MIDI_GENERIC) != 0)
lst << "MIDI Generic";
if ((ptype & SND_SEQ_PORT_TYPE_MIDI_GM) != 0)
lst << "GM";
if ((ptype & SND_SEQ_PORT_TYPE_MIDI_GM2) != 0)
lst << "GM2";
if ((ptype & SND_SEQ_PORT_TYPE_MIDI_GS) != 0)
lst << "GS";
if ((ptype & SND_SEQ_PORT_TYPE_MIDI_MT32) != 0)
lst << "MT32";
if ((ptype & SND_SEQ_PORT_TYPE_MIDI_XG) != 0)
lst << "XG";
if ((ptype & SND_SEQ_PORT_TYPE_SAMPLE) != 0)
lst << "Sample";
if ((ptype & SND_SEQ_PORT_TYPE_SPECIFIC) != 0)
lst << "Specific";
if ((ptype & SND_SEQ_PORT_TYPE_SYNTH) != 0)
lst << "Synth";
if ((ptype & SND_SEQ_PORT_TYPE_APPLICATION) != 0)
lst << "Application";
if ((ptype & SND_SEQ_PORT_TYPE_SYNTHESIZER) != 0)
lst << "Synthesizer";
return " (" + lst.join(", ") + ")";
}
QString subsNames(SubscribersList& subs)
{
QStringList lst;
foreach( Subscriber s, subs ) {
QString sname = QString("%1:%2").arg(static_cast<int>(s.getAddr()->client))
.arg(static_cast<int>(s.getAddr()->port));
lst << sname;
}
return lst.join(", ");
}
void queryClients(MidiClient* c)
{
cout << endl << "ALSA Sequencer clients" << endl;
ClientInfoList clients = c->getAvailableClients();
foreach( ClientInfo cinfo, clients ) {
PortInfoList plist = cinfo.getPorts();
cout << "Client " << qSetFieldWidth(4) << left << cinfo.getClientId()
<< qSetFieldWidth(0) << " : \"" << cinfo.getName() << "\" ["
<< clientTypeName(cinfo.getClientType())
<< "]" << endl;
foreach( PortInfo pinfo, plist ) {
SubscribersList to = pinfo.getReadSubscribers();
SubscribersList from = pinfo.getWriteSubscribers();
cout << " Port " << qSetFieldWidth(4) << right << pinfo.getPort()
<< qSetFieldWidth(0) << " : \"" << pinfo.getName() << "\""
<< (pinfo.getType() != 0 ? portTypeNames(pinfo.getType()) : "")
<< endl;
if ( from.count() > 0 )
cout << " Connected From: " << subsNames(from) << endl;
if ( to.count() > 0 )
cout << " Connecting To: " << subsNames(to) << endl;
}
}
}
void systemInfo()
{
MidiClient* client = new MidiClient();
client->open();
client->setClientName(PGM_NAME);
SystemInfo info = client->getSystemInfo();
cout << PGM_DESCRIPTION << ", version: "<< QStringLiteral(QT_STRINGIFY(VERSION)) << endl;
cout << "Compiled ALSA library: " << getCompiledALSALibraryVersion() << endl;
cout << "Runtime ALSA library: "
<< getRuntimeALSALibraryVersion() << endl;
cout << "Runtime ALSA drivers: "
cout << "Numeric ALSA compiled library: "
<< hex << SND_LIB_VERSION << endl;
cout << "Numeric ALSA runtime library: "
<< getRuntimeALSALibraryNumber() << endl;
cout << "Numeric ALSA runtime driver: "
cout << "Max Clients: " << dec << info.getMaxClients() << endl;
cout << "Max Ports: " << info.getMaxPorts() << endl;
cout << "Max Queues: " << info.getMaxQueues() << endl;
cout << "Max Channels: " << info.getMaxChannels() << endl;
cout << "Current Queues: " << info.getCurrentQueues() << endl;
cout << "Current Clients: " << info.getCurrentClients() << endl;
queryTimers();
if (info.getCurrentQueues() > 0)
queryQueues(client);
if (info.getCurrentClients() > 0)
queryClients(client);
delete client;
}
int main(int argc, char **argv)
{
const QString ERRORSTR = QStringLiteral("Fatal error from the ALSA sequencer. "
"This usually happens when the kernel doesn't have ALSA support, "
"or the device node (/dev/snd/seq) doesn't exists, "
"or the kernel module (snd_seq) is not loaded. "
"Please check your ALSA/MIDI configuration.");
QCoreApplication app(argc, argv);
QCoreApplication::setApplicationName(PGM_NAME);
QCoreApplication::setApplicationVersion(QStringLiteral(QT_STRINGIFY(VERSION)));
QCommandLineParser parser;
parser.setApplicationDescription(PGM_DESCRIPTION);
auto helpOption = parser.addHelpOption();
auto versionOption = parser.addVersionOption();
parser.process(app);
if (parser.isSet(versionOption) || parser.isSet(helpOption)) {
return 0;
}
try {
systemInfo();
} catch (const SequencerError& ex) {
cerr << ERRORSTR << " Returned error was: " << ex.qstrError() << endl;
} catch (...) {
cerr << ERRORSTR << endl;
}
return 0;
}
Classes managing ALSA Sequencer clients.
Classes managing ALSA Sequencer queues.
Classes managing ALSA Timers.
int getRuntimeALSADriverNumber()
Gets the runtime ALSA drivers version number.
QString getRuntimeALSADriverVersion()
Gets the runtime ALSA drivers version string.
QList< ClientInfo > ClientInfoList
List of sequencer client information.
Definition: alsaclient.h:109
QString getCompiledALSALibraryVersion()
ALSA library version at build time.
QList< PortInfo > PortInfoList
List of port information objects.
Definition: alsaport.h:107
QList< Subscriber > SubscribersList
List of subscribers.
Definition: subscription.h:128
QList< TimerId > TimerIdList
List of timer identifiers.
Definition: alsatimer.h:119
Drumstick ALSA library wrapper.
Definition: alsaclient.cpp:68
SequencerError Exception class.
Classes managing ALSA sequencer subscriptions.