1 files changed, 354 insertions, 0 deletions
diff --git a/src/plugins/pulseaudio/qpulseaudioengine.cpp b/src/plugins/pulseaudio/qpulseaudioengine.cpp
new file mode 100644
index 000000000..da0963fa9
--- /dev/null
+++ b/src/plugins/pulseaudio/qpulseaudioengine.cpp
@@ -0,0 +1,354 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qdebug.h>
+
+#include <qaudiodeviceinfo.h>
+#include "qpulseaudioengine.h"
+#include "qaudiodeviceinfo_pulse.h"
+#include "qaudiooutput_pulse.h"
+#include "qpulsehelpers.h"
+
+QT_BEGIN_NAMESPACE
+
+static void serverInfoCallback(pa_context *context, const pa_server_info *info, void *userdata)
+{
+    if (!info) {
+        qWarning() << QString("Failed to get server information: %s").arg(pa_strerror(pa_context_errno(context)));
+        return;
+    }
+
+#ifdef DEBUG_PULSE
+    char ss[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
+
+    pa_sample_spec_snprint(ss, sizeof(ss), &info->sample_spec);
+    pa_channel_map_snprint(cm, sizeof(cm), &info->channel_map);
+
+    qDebug() << QString("User name: %1\n"
+             "Host Name: %2\n"
+             "Server Name: %3\n"
+             "Server Version: %4\n"
+             "Default Sample Specification: %5\n"
+             "Default Channel Map: %6\n"
+             "Default Sink: %7\n"
+             "Default Source: %8\n").arg(
+           info->user_name,
+           info->host_name,
+           info->server_name,
+           info->server_version,
+           ss,
+           cm,
+           info->default_sink_name,
+           info->default_source_name);
+#endif
+
+    QPulseAudioEngine *pulseEngine = static_cast<QPulseAudioEngine*>(userdata);
+    pulseEngine->m_defaultSink = info->default_sink_name;
+    pulseEngine->m_defaultSource = info->default_source_name;
+
+    pa_threaded_mainloop_signal(pulseEngine->mainloop(), 0);
+}
+
+static void sinkInfoCallback(pa_context *context, const pa_sink_info *info, int isLast, void *userdata)
+{
+    QPulseAudioEngine *pulseEngine = static_cast<QPulseAudioEngine*>(userdata);
+    QMap<pa_sink_state, QString> stateMap;
+    stateMap[PA_SINK_INVALID_STATE] = "n/a";
+    stateMap[PA_SINK_RUNNING] = "RUNNING";
+    stateMap[PA_SINK_IDLE] = "IDLE";
+    stateMap[PA_SINK_SUSPENDED] = "SUSPENDED";
+
+    if (isLast < 0) {
+        qWarning() << QString("Failed to get sink information: %s").arg(pa_strerror(pa_context_errno(context)));
+        return;
+    }
+
+    if (isLast) {
+        pa_threaded_mainloop_signal(pulseEngine->mainloop(), 0);
+        return;
+    }
+
+    Q_ASSERT(info);
+
+#ifdef DEBUG_PULSE
+    qDebug() << QString("Sink #%1\n"
+             "\tState: %2\n"
+             "\tName: %3\n"
+             "\tDescription: %4\n"
+            ).arg(QString::number(info->index),
+                  stateMap.value(info->state),
+                  info->name,
+                  info->description);
+#endif
+
+    QAudioFormat format = QPulseAudioInternal::sampleSpecToAudioFormat(info->sample_spec);
+    pulseEngine->m_preferredFormats.insert(info->name, format);
+    pulseEngine->m_sinks.append(info->name);
+}
+
+static void sourceInfoCallback(pa_context *context, const pa_source_info *info, int isLast, void *userdata)
+{
+    Q_UNUSED(context)
+    QPulseAudioEngine *pulseEngine = static_cast<QPulseAudioEngine*>(userdata);
+
+    QMap<pa_source_state, QString> stateMap;
+    stateMap[PA_SOURCE_INVALID_STATE] = "n/a";
+    stateMap[PA_SOURCE_RUNNING] = "RUNNING";
+    stateMap[PA_SOURCE_IDLE] = "IDLE";
+    stateMap[PA_SOURCE_SUSPENDED] = "SUSPENDED";
+
+    if (isLast) {
+        pa_threaded_mainloop_signal(pulseEngine->mainloop(), 0);
+        return;
+    }
+
+    Q_ASSERT(info);
+
+#ifdef DEBUG_PULSE
+    qDebug() << QString("Source #%1\n"
+         "\tState: %2\n"
+         "\tName: %3\n"
+         "\tDescription: %4\n"
+        ).arg(QString::number(info->index),
+              stateMap.value(info->state),
+              info->name,
+              info->description);
+#endif
+
+    QAudioFormat format = QPulseAudioInternal::sampleSpecToAudioFormat(info->sample_spec);
+    pulseEngine->m_preferredFormats.insert(info->name, format);
+    pulseEngine->m_sources.append(info->name);
+}
+
+static void contextStateCallbackInit(pa_context *context, void *userdata)
+{
+    Q_UNUSED(context);
+#ifdef DEBUG_PULSE
+    qDebug() << QPulseAudioInternal::stateToQString(pa_context_get_state(context));
+#endif
+    QPulseAudioEngine *pulseEngine = reinterpret_cast<QPulseAudioEngine*>(userdata);
+    pa_threaded_mainloop_signal(pulseEngine->mainloop(), 0);
+}
+
+static void contextStateCallback(pa_context *context, void *userdata)
+{
+    Q_UNUSED(userdata);
+    Q_UNUSED(context);
+
+#ifdef DEBUG_PULSE
+    pa_context_state_t state = pa_context_get_state(context);
+    qDebug() << QPulseAudioInternal::stateToQString(state);
+#endif
+}
+
+Q_GLOBAL_STATIC(QPulseAudioEngine, pulseEngine);
+
+QPulseAudioEngine::QPulseAudioEngine(QObject *parent)
+    : QObject(parent)
+{
+    bool keepGoing = true;
+    bool ok = true;
+
+    m_mainLoop = pa_threaded_mainloop_new();
+    if (m_mainLoop == 0) {
+        qWarning("Unable to create pulseaudio mainloop");
+        return;
+    }
+
+    if (pa_threaded_mainloop_start(m_mainLoop) != 0) {
+        qWarning("Unable to start pulseaudio mainloop");
+        pa_threaded_mainloop_free(m_mainLoop);
+        return;
+    }
+
+    m_mainLoopApi = pa_threaded_mainloop_get_api(m_mainLoop);
+
+    pa_threaded_mainloop_lock(m_mainLoop);
+
+    m_context = pa_context_new(m_mainLoopApi, QString(QLatin1String("QtmPulseContext:%1")).arg(::getpid()).toAscii().constData());
+    pa_context_set_state_callback(m_context, contextStateCallbackInit, this);
+
+    if (!m_context) {
+        qWarning("Unable to create new pulseaudio context");
+        pa_threaded_mainloop_free(m_mainLoop);
+        return;
+    }
+
+    if (pa_context_connect(m_context, NULL, (pa_context_flags_t)0, NULL) < 0) {
+        qWarning("Unable to create a connection to the pulseaudio context");
+        pa_context_unref(m_context);
+        pa_threaded_mainloop_free(m_mainLoop);
+        return;
+    }
+
+    pa_threaded_mainloop_wait(m_mainLoop);
+
+    while (keepGoing) {
+        switch (pa_context_get_state(m_context)) {
+            case PA_CONTEXT_CONNECTING:
+            case PA_CONTEXT_AUTHORIZING:
+            case PA_CONTEXT_SETTING_NAME:
+                break;
+
+            case PA_CONTEXT_READY:
+#ifdef DEBUG_PULSE
+                qDebug("Connection established.");
+#endif
+                keepGoing = false;
+                break;
+
+            case PA_CONTEXT_TERMINATED:
+                qCritical("Context terminated.");
+                keepGoing = false;
+                ok = false;
+                break;
+
+            case PA_CONTEXT_FAILED:
+            default:
+                qCritical() << QString("Connection failure: %1").arg(pa_strerror(pa_context_errno(m_context)));
+                keepGoing = false;
+                ok = false;
+        }
+
+        if (keepGoing) {
+            pa_threaded_mainloop_wait(m_mainLoop);
+        }
+    }
+
+    if (ok) {
+        pa_context_set_state_callback(m_context, contextStateCallback, this);
+    } else {
+        if (m_context) {
+            pa_context_unref(m_context);
+            m_context = 0;
+        }
+    }
+
+    pa_threaded_mainloop_unlock(m_mainLoop);
+
+    serverInfo();
+    sinks();
+    sources();
+}
+
+QPulseAudioEngine::~QPulseAudioEngine()
+{
+    if (m_context) {
+        pa_threaded_mainloop_lock(m_mainLoop);
+        pa_context_disconnect(m_context);
+        pa_threaded_mainloop_unlock(m_mainLoop);
+        m_context = 0;
+    }
+
+    if (m_mainLoop) {
+        pa_threaded_mainloop_stop(m_mainLoop);
+        pa_threaded_mainloop_free(m_mainLoop);
+        m_mainLoop = 0;
+    }
+}
+
+void QPulseAudioEngine::serverInfo()
+{
+    pa_operation *operation;
+
+    pa_threaded_mainloop_lock(m_mainLoop);
+
+    operation = pa_context_get_server_info(m_context, serverInfoCallback, this);
+
+    while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING)
+        pa_threaded_mainloop_wait(m_mainLoop);
+
+    pa_operation_unref(operation);
+
+    pa_threaded_mainloop_unlock(m_mainLoop);
+}
+
+void QPulseAudioEngine::sinks()
+{
+    pa_operation *operation;
+
+    pa_threaded_mainloop_lock(m_mainLoop);
+
+    operation = pa_context_get_sink_info_list(m_context, sinkInfoCallback, this);
+
+    while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING)
+        pa_threaded_mainloop_wait(m_mainLoop);
+
+    pa_operation_unref(operation);
+
+    pa_threaded_mainloop_unlock(m_mainLoop);
+
+    // Swap the default sink to index 0
+    m_sinks.removeOne(m_defaultSink);
+    m_sinks.prepend(m_defaultSink);
+}
+
+void QPulseAudioEngine::sources()
+{
+    pa_operation *operation;
+
+    pa_threaded_mainloop_lock(m_mainLoop);
+
+    operation = pa_context_get_source_info_list(m_context, sourceInfoCallback, this);
+
+    while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING)
+        pa_threaded_mainloop_wait(m_mainLoop);
+
+    pa_operation_unref(operation);
+
+    pa_threaded_mainloop_unlock(m_mainLoop);
+
+    // Swap the default source to index 0
+    m_sources.removeOne(m_defaultSource);
+    m_sources.prepend(m_defaultSource);
+}
+
+QPulseAudioEngine *QPulseAudioEngine::instance()
+{
+    return pulseEngine();
+}
+
+QList<QByteArray> QPulseAudioEngine::availableDevices(QAudio::Mode mode) const
+{
+    return mode == QAudio::AudioOutput ? m_sinks : m_sources;
+}
+
+QT_END_NAMESPACE