| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
| ** https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include <QtCore/qdebug.h> |
| |
| #include <qaudiodeviceinfo.h> |
| #include "qpulseaudioengine.h" |
| #include "qaudiodeviceinfo_pulse.h" |
| #include "qaudiooutput_pulse.h" |
| #include "qpulsehelpers.h" |
| #include <sys/types.h> |
| #include <unistd.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_serverLock.lockForWrite(); |
| pulseEngine->m_defaultSink = info->default_sink_name; |
| pulseEngine->m_defaultSource = info->default_source_name; |
| pulseEngine->m_serverLock.unlock(); |
| |
| 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); |
| |
| 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 |
| 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"; |
| |
| 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); |
| |
| QWriteLocker locker(&pulseEngine->m_sinkLock); |
| pulseEngine->m_preferredFormats.insert(info->name, format); |
| pulseEngine->m_sinks.insert(info->index, 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); |
| |
| if (isLast) { |
| pa_threaded_mainloop_signal(pulseEngine->mainloop(), 0); |
| return; |
| } |
| |
| Q_ASSERT(info); |
| |
| #ifdef DEBUG_PULSE |
| 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"; |
| |
| 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); |
| |
| QWriteLocker locker(&pulseEngine->m_sourceLock); |
| pulseEngine->m_preferredFormats.insert(info->name, format); |
| pulseEngine->m_sources.insert(info->index, info->name); |
| } |
| |
| static void event_cb(pa_context* context, pa_subscription_event_type_t t, uint32_t index, void* userdata) |
| { |
| QPulseAudioEngine *pulseEngine = static_cast<QPulseAudioEngine*>(userdata); |
| |
| int type = t & PA_SUBSCRIPTION_EVENT_TYPE_MASK; |
| int facility = t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK; |
| |
| switch (type) { |
| case PA_SUBSCRIPTION_EVENT_NEW: |
| case PA_SUBSCRIPTION_EVENT_CHANGE: |
| switch (facility) { |
| case PA_SUBSCRIPTION_EVENT_SERVER: { |
| pa_operation *op = pa_context_get_server_info(context, serverInfoCallback, userdata); |
| if (op) |
| pa_operation_unref(op); |
| else |
| qWarning("PulseAudioService: failed to get server info"); |
| break; |
| } |
| case PA_SUBSCRIPTION_EVENT_SINK: { |
| pa_operation *op = pa_context_get_sink_info_by_index(context, index, sinkInfoCallback, userdata); |
| if (op) |
| pa_operation_unref(op); |
| else |
| qWarning("PulseAudioService: failed to get sink info"); |
| break; |
| } |
| case PA_SUBSCRIPTION_EVENT_SOURCE: { |
| pa_operation *op = pa_context_get_source_info_by_index(context, index, sourceInfoCallback, userdata); |
| if (op) |
| pa_operation_unref(op); |
| else |
| qWarning("PulseAudioService: failed to get source info"); |
| break; |
| } |
| default: |
| break; |
| } |
| break; |
| case PA_SUBSCRIPTION_EVENT_REMOVE: |
| switch (facility) { |
| case PA_SUBSCRIPTION_EVENT_SINK: |
| pulseEngine->m_sinkLock.lockForWrite(); |
| pulseEngine->m_preferredFormats.remove(pulseEngine->m_sinks.value(index)); |
| pulseEngine->m_sinks.remove(index); |
| pulseEngine->m_sinkLock.unlock(); |
| break; |
| case PA_SUBSCRIPTION_EVENT_SOURCE: |
| pulseEngine->m_sourceLock.lockForWrite(); |
| pulseEngine->m_preferredFormats.remove(pulseEngine->m_sources.value(index)); |
| pulseEngine->m_sources.remove(index); |
| pulseEngine->m_sourceLock.unlock(); |
| break; |
| default: |
| break; |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| |
| 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 *c, void *userdata) |
| { |
| QPulseAudioEngine *self = reinterpret_cast<QPulseAudioEngine*>(userdata); |
| pa_context_state_t state = pa_context_get_state(c); |
| |
| #ifdef DEBUG_PULSE |
| qDebug() << QPulseAudioInternal::stateToQString(state); |
| #endif |
| |
| if (state == PA_CONTEXT_FAILED) |
| QMetaObject::invokeMethod(self, "onContextFailed", Qt::QueuedConnection); |
| } |
| |
| Q_GLOBAL_STATIC(QPulseAudioEngine, pulseEngine); |
| |
| QPulseAudioEngine::QPulseAudioEngine(QObject *parent) |
| : QObject(parent) |
| , m_mainLoopApi(0) |
| , m_context(0) |
| , m_prepared(false) |
| { |
| prepare(); |
| } |
| |
| QPulseAudioEngine::~QPulseAudioEngine() |
| { |
| if (m_prepared) |
| release(); |
| } |
| |
| void QPulseAudioEngine::prepare() |
| { |
| bool keepGoing = true; |
| bool ok = true; |
| |
| m_mainLoop = pa_threaded_mainloop_new(); |
| if (m_mainLoop == 0) { |
| qWarning("PulseAudioService: unable to create pulseaudio mainloop"); |
| return; |
| } |
| |
| if (pa_threaded_mainloop_start(m_mainLoop) != 0) { |
| qWarning("PulseAudioService: unable to start pulseaudio mainloop"); |
| pa_threaded_mainloop_free(m_mainLoop); |
| m_mainLoop = 0; |
| return; |
| } |
| |
| m_mainLoopApi = pa_threaded_mainloop_get_api(m_mainLoop); |
| |
| lock(); |
| |
| m_context = pa_context_new(m_mainLoopApi, QString(QLatin1String("QtPulseAudio:%1")).arg(::getpid()).toLatin1().constData()); |
| |
| if (m_context == 0) { |
| qWarning("PulseAudioService: Unable to create new pulseaudio context"); |
| pa_threaded_mainloop_unlock(m_mainLoop); |
| pa_threaded_mainloop_free(m_mainLoop); |
| m_mainLoop = 0; |
| onContextFailed(); |
| return; |
| } |
| |
| pa_context_set_state_callback(m_context, contextStateCallbackInit, this); |
| |
| if (pa_context_connect(m_context, 0, (pa_context_flags_t)0, 0) < 0) { |
| qWarning("PulseAudioService: pa_context_connect() failed"); |
| pa_context_unref(m_context); |
| pa_threaded_mainloop_unlock(m_mainLoop); |
| pa_threaded_mainloop_free(m_mainLoop); |
| m_mainLoop = 0; |
| m_context = 0; |
| 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("PulseAudioService: Context terminated."); |
| keepGoing = false; |
| ok = false; |
| break; |
| |
| case PA_CONTEXT_FAILED: |
| default: |
| qCritical() << QString("PulseAudioService: 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); |
| |
| pa_context_set_subscribe_callback(m_context, event_cb, this); |
| pa_operation *op = pa_context_subscribe(m_context, |
| pa_subscription_mask_t(PA_SUBSCRIPTION_MASK_SINK | |
| PA_SUBSCRIPTION_MASK_SOURCE | |
| PA_SUBSCRIPTION_MASK_SERVER), |
| NULL, NULL); |
| if (op) |
| pa_operation_unref(op); |
| else |
| qWarning("PulseAudioService: failed to subscribe to context notifications"); |
| } else { |
| pa_context_unref(m_context); |
| m_context = 0; |
| } |
| |
| unlock(); |
| |
| if (ok) { |
| updateDevices(); |
| m_prepared = true; |
| } else { |
| pa_threaded_mainloop_free(m_mainLoop); |
| m_mainLoop = 0; |
| onContextFailed(); |
| } |
| } |
| |
| void QPulseAudioEngine::release() |
| { |
| if (!m_prepared) |
| return; |
| |
| if (m_context) { |
| pa_context_disconnect(m_context); |
| pa_context_unref(m_context); |
| m_context = 0; |
| } |
| |
| if (m_mainLoop) { |
| pa_threaded_mainloop_stop(m_mainLoop); |
| pa_threaded_mainloop_free(m_mainLoop); |
| m_mainLoop = 0; |
| } |
| |
| m_prepared = false; |
| } |
| |
| void QPulseAudioEngine::updateDevices() |
| { |
| lock(); |
| |
| // Get default input and output devices |
| pa_operation *operation = pa_context_get_server_info(m_context, serverInfoCallback, this); |
| if (operation) { |
| while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING) |
| pa_threaded_mainloop_wait(m_mainLoop); |
| pa_operation_unref(operation); |
| } else { |
| qWarning("PulseAudioService: failed to get server info"); |
| } |
| |
| // Get output devices |
| operation = pa_context_get_sink_info_list(m_context, sinkInfoCallback, this); |
| if (operation) { |
| while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING) |
| pa_threaded_mainloop_wait(m_mainLoop); |
| pa_operation_unref(operation); |
| } else { |
| qWarning("PulseAudioService: failed to get sink info"); |
| } |
| |
| // Get input devices |
| operation = pa_context_get_source_info_list(m_context, sourceInfoCallback, this); |
| if (operation) { |
| while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING) |
| pa_threaded_mainloop_wait(m_mainLoop); |
| pa_operation_unref(operation); |
| } else { |
| qWarning("PulseAudioService: failed to get source info"); |
| } |
| |
| unlock(); |
| } |
| |
| void QPulseAudioEngine::onContextFailed() |
| { |
| // Give a chance to the connected slots to still use the Pulse main loop before releasing it. |
| emit contextFailed(); |
| |
| release(); |
| |
| // Try to reconnect later |
| QTimer::singleShot(3000, this, SLOT(prepare())); |
| } |
| |
| QPulseAudioEngine *QPulseAudioEngine::instance() |
| { |
| return pulseEngine(); |
| } |
| |
| QList<QByteArray> QPulseAudioEngine::availableDevices(QAudio::Mode mode) const |
| { |
| QList<QByteArray> devices; |
| QByteArray defaultDevice; |
| |
| m_serverLock.lockForRead(); |
| |
| if (mode == QAudio::AudioOutput) { |
| QReadLocker locker(&m_sinkLock); |
| devices = m_sinks.values(); |
| defaultDevice = m_defaultSink; |
| } else { |
| QReadLocker locker(&m_sourceLock); |
| devices = m_sources.values(); |
| defaultDevice = m_defaultSource; |
| } |
| |
| m_serverLock.unlock(); |
| |
| // Swap the default device to index 0 |
| devices.removeOne(defaultDevice); |
| devices.prepend(defaultDevice); |
| |
| return devices; |
| } |
| |
| QByteArray QPulseAudioEngine::defaultDevice(QAudio::Mode mode) const |
| { |
| return (mode == QAudio::AudioOutput) ? m_defaultSink : m_defaultSource; |
| } |
| |
| QT_END_NAMESPACE |
