Initial copy of QtMultimediaKit.
Comes from original repo, with SHA1: 2c82d5611655e5967f5c5095af50c0991c4378b2
This commit is contained in:
Michael Goddard
354
src/plugins/pulseaudio/qpulseaudioengine.cpp
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354
src/plugins/pulseaudio/qpulseaudioengine.cpp
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtCore/qdebug.h>
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#include <qaudiodeviceinfo.h>
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#include "qpulseaudioengine.h"
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#include "qaudiodeviceinfo_pulse.h"
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#include "qaudiooutput_pulse.h"
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#include "qpulsehelpers.h"
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QT_BEGIN_NAMESPACE
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static void serverInfoCallback(pa_context *context, const pa_server_info *info, void *userdata)
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{
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if (!info) {
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qWarning() << QString("Failed to get server information: %s").arg(pa_strerror(pa_context_errno(context)));
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return;
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}
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#ifdef DEBUG_PULSE
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char ss[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
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pa_sample_spec_snprint(ss, sizeof(ss), &info->sample_spec);
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pa_channel_map_snprint(cm, sizeof(cm), &info->channel_map);
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qDebug() << QString("User name: %1\n"
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"Host Name: %2\n"
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"Server Name: %3\n"
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"Server Version: %4\n"
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"Default Sample Specification: %5\n"
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"Default Channel Map: %6\n"
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"Default Sink: %7\n"
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"Default Source: %8\n").arg(
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info->user_name,
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info->host_name,
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info->server_name,
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info->server_version,
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ss,
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cm,
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info->default_sink_name,
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info->default_source_name);
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#endif
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QPulseAudioEngine *pulseEngine = static_cast<QPulseAudioEngine*>(userdata);
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pulseEngine->m_defaultSink = info->default_sink_name;
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pulseEngine->m_defaultSource = info->default_source_name;
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pa_threaded_mainloop_signal(pulseEngine->mainloop(), 0);
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}
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static void sinkInfoCallback(pa_context *context, const pa_sink_info *info, int isLast, void *userdata)
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{
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QPulseAudioEngine *pulseEngine = static_cast<QPulseAudioEngine*>(userdata);
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QMap<pa_sink_state, QString> stateMap;
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stateMap[PA_SINK_INVALID_STATE] = "n/a";
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stateMap[PA_SINK_RUNNING] = "RUNNING";
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stateMap[PA_SINK_IDLE] = "IDLE";
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stateMap[PA_SINK_SUSPENDED] = "SUSPENDED";
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if (isLast < 0) {
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qWarning() << QString("Failed to get sink information: %s").arg(pa_strerror(pa_context_errno(context)));
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return;
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}
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if (isLast) {
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pa_threaded_mainloop_signal(pulseEngine->mainloop(), 0);
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return;
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}
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Q_ASSERT(info);
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#ifdef DEBUG_PULSE
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qDebug() << QString("Sink #%1\n"
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"\tState: %2\n"
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"\tName: %3\n"
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"\tDescription: %4\n"
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).arg(QString::number(info->index),
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stateMap.value(info->state),
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info->name,
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info->description);
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#endif
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QAudioFormat format = QPulseAudioInternal::sampleSpecToAudioFormat(info->sample_spec);
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pulseEngine->m_preferredFormats.insert(info->name, format);
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pulseEngine->m_sinks.append(info->name);
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}
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static void sourceInfoCallback(pa_context *context, const pa_source_info *info, int isLast, void *userdata)
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{
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Q_UNUSED(context)
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QPulseAudioEngine *pulseEngine = static_cast<QPulseAudioEngine*>(userdata);
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QMap<pa_source_state, QString> stateMap;
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stateMap[PA_SOURCE_INVALID_STATE] = "n/a";
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stateMap[PA_SOURCE_RUNNING] = "RUNNING";
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stateMap[PA_SOURCE_IDLE] = "IDLE";
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stateMap[PA_SOURCE_SUSPENDED] = "SUSPENDED";
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if (isLast) {
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pa_threaded_mainloop_signal(pulseEngine->mainloop(), 0);
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return;
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}
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Q_ASSERT(info);
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#ifdef DEBUG_PULSE
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qDebug() << QString("Source #%1\n"
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"\tState: %2\n"
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"\tName: %3\n"
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"\tDescription: %4\n"
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).arg(QString::number(info->index),
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stateMap.value(info->state),
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info->name,
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info->description);
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#endif
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QAudioFormat format = QPulseAudioInternal::sampleSpecToAudioFormat(info->sample_spec);
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pulseEngine->m_preferredFormats.insert(info->name, format);
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pulseEngine->m_sources.append(info->name);
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}
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static void contextStateCallbackInit(pa_context *context, void *userdata)
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{
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Q_UNUSED(context);
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#ifdef DEBUG_PULSE
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qDebug() << QPulseAudioInternal::stateToQString(pa_context_get_state(context));
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#endif
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QPulseAudioEngine *pulseEngine = reinterpret_cast<QPulseAudioEngine*>(userdata);
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pa_threaded_mainloop_signal(pulseEngine->mainloop(), 0);
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}
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static void contextStateCallback(pa_context *context, void *userdata)
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{
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Q_UNUSED(userdata);
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Q_UNUSED(context);
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#ifdef DEBUG_PULSE
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pa_context_state_t state = pa_context_get_state(context);
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qDebug() << QPulseAudioInternal::stateToQString(state);
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#endif
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}
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Q_GLOBAL_STATIC(QPulseAudioEngine, pulseEngine);
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QPulseAudioEngine::QPulseAudioEngine(QObject *parent)
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: QObject(parent)
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{
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bool keepGoing = true;
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bool ok = true;
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m_mainLoop = pa_threaded_mainloop_new();
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if (m_mainLoop == 0) {
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qWarning("Unable to create pulseaudio mainloop");
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return;
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}
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if (pa_threaded_mainloop_start(m_mainLoop) != 0) {
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qWarning("Unable to start pulseaudio mainloop");
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pa_threaded_mainloop_free(m_mainLoop);
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return;
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}
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m_mainLoopApi = pa_threaded_mainloop_get_api(m_mainLoop);
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pa_threaded_mainloop_lock(m_mainLoop);
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m_context = pa_context_new(m_mainLoopApi, QString(QLatin1String("QtmPulseContext:%1")).arg(::getpid()).toAscii().constData());
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pa_context_set_state_callback(m_context, contextStateCallbackInit, this);
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if (!m_context) {
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qWarning("Unable to create new pulseaudio context");
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pa_threaded_mainloop_free(m_mainLoop);
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return;
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}
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if (pa_context_connect(m_context, NULL, (pa_context_flags_t)0, NULL) < 0) {
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qWarning("Unable to create a connection to the pulseaudio context");
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pa_context_unref(m_context);
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pa_threaded_mainloop_free(m_mainLoop);
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return;
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}
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pa_threaded_mainloop_wait(m_mainLoop);
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while (keepGoing) {
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switch (pa_context_get_state(m_context)) {
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case PA_CONTEXT_CONNECTING:
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case PA_CONTEXT_AUTHORIZING:
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case PA_CONTEXT_SETTING_NAME:
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break;
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case PA_CONTEXT_READY:
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#ifdef DEBUG_PULSE
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qDebug("Connection established.");
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#endif
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keepGoing = false;
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break;
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case PA_CONTEXT_TERMINATED:
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qCritical("Context terminated.");
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keepGoing = false;
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ok = false;
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break;
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case PA_CONTEXT_FAILED:
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default:
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qCritical() << QString("Connection failure: %1").arg(pa_strerror(pa_context_errno(m_context)));
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keepGoing = false;
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ok = false;
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}
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if (keepGoing) {
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pa_threaded_mainloop_wait(m_mainLoop);
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}
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}
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if (ok) {
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pa_context_set_state_callback(m_context, contextStateCallback, this);
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} else {
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if (m_context) {
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pa_context_unref(m_context);
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m_context = 0;
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}
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}
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pa_threaded_mainloop_unlock(m_mainLoop);
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serverInfo();
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sinks();
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sources();
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}
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QPulseAudioEngine::~QPulseAudioEngine()
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{
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if (m_context) {
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pa_threaded_mainloop_lock(m_mainLoop);
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pa_context_disconnect(m_context);
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pa_threaded_mainloop_unlock(m_mainLoop);
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m_context = 0;
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}
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if (m_mainLoop) {
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pa_threaded_mainloop_stop(m_mainLoop);
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pa_threaded_mainloop_free(m_mainLoop);
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m_mainLoop = 0;
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}
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}
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void QPulseAudioEngine::serverInfo()
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{
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pa_operation *operation;
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pa_threaded_mainloop_lock(m_mainLoop);
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operation = pa_context_get_server_info(m_context, serverInfoCallback, this);
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while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING)
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pa_threaded_mainloop_wait(m_mainLoop);
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pa_operation_unref(operation);
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pa_threaded_mainloop_unlock(m_mainLoop);
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}
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void QPulseAudioEngine::sinks()
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{
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pa_operation *operation;
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pa_threaded_mainloop_lock(m_mainLoop);
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operation = pa_context_get_sink_info_list(m_context, sinkInfoCallback, this);
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while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING)
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pa_threaded_mainloop_wait(m_mainLoop);
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pa_operation_unref(operation);
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pa_threaded_mainloop_unlock(m_mainLoop);
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// Swap the default sink to index 0
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m_sinks.removeOne(m_defaultSink);
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m_sinks.prepend(m_defaultSink);
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}
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void QPulseAudioEngine::sources()
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{
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pa_operation *operation;
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pa_threaded_mainloop_lock(m_mainLoop);
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operation = pa_context_get_source_info_list(m_context, sourceInfoCallback, this);
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while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING)
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pa_threaded_mainloop_wait(m_mainLoop);
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pa_operation_unref(operation);
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pa_threaded_mainloop_unlock(m_mainLoop);
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// Swap the default source to index 0
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m_sources.removeOne(m_defaultSource);
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m_sources.prepend(m_defaultSource);
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}
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QPulseAudioEngine *QPulseAudioEngine::instance()
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{
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return pulseEngine();
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}
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QList<QByteArray> QPulseAudioEngine::availableDevices(QAudio::Mode mode) const
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{
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return mode == QAudio::AudioOutput ? m_sinks : m_sources;
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}
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QT_END_NAMESPACE
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