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411 lines
12 KiB
411 lines
12 KiB
/* BEGIN_COMMON_COPYRIGHT_HEADER
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* (c)LGPL2+
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*
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* LXDE-Qt - a lightweight, Qt based, desktop toolset
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* http://razor-qt.org
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*
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* Copyright: 2012 Razor team
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* Authors:
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* Johannes Zellner <webmaster@nebulon.de>
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*
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* This program or library is free software; you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*
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* END_COMMON_COPYRIGHT_HEADER */
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#include "pulseaudioengine.h"
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#include "audiodevice.h"
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#include <QMetaType>
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#include <QtDebug>
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//#define PULSEAUDIO_ENGINE_DEBUG
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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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PulseAudioEngine *pulseEngine = static_cast<PulseAudioEngine*>(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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pa_threaded_mainloop_signal(pulseEngine->mainloop(), 0);
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qWarning() << QString("Failed to get sink information: %1").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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pulseEngine->addOrUpdateSink(info);
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}
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static void contextEventCallback(pa_context *context, const char *name, pa_proplist *p, void *userdata)
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{
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#ifdef PULSEAUDIO_ENGINE_DEBUG
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qWarning("event received %s", name);
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#endif
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}
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static void contextStateCallback(pa_context *context, void *userdata)
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{
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PulseAudioEngine *pulseEngine = reinterpret_cast<PulseAudioEngine*>(userdata);
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// update internal state
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pa_context_state_t state = pa_context_get_state(context);
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pulseEngine->setContextState(state);
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#ifdef PULSEAUDIO_ENGINE_DEBUG
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switch (state) {
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case PA_CONTEXT_UNCONNECTED:
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qWarning("context unconnected");
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break;
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case PA_CONTEXT_CONNECTING:
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qWarning("context connecting");
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break;
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case PA_CONTEXT_AUTHORIZING:
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qWarning("context authorizing");
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break;
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case PA_CONTEXT_SETTING_NAME:
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qWarning("context setting name");
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break;
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case PA_CONTEXT_READY:
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qWarning("context ready");
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break;
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case PA_CONTEXT_FAILED:
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qWarning("context failed");
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break;
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case PA_CONTEXT_TERMINATED:
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qWarning("context terminated");
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break;
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default:
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qWarning("we should never hit this state");
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}
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#endif
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pa_threaded_mainloop_signal(pulseEngine->mainloop(), 0);
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}
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static void contextSuccessCallback(pa_context *context, int success, void *userdata)
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{
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Q_UNUSED(context);
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Q_UNUSED(success);
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Q_UNUSED(userdata);
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PulseAudioEngine *pulseEngine = reinterpret_cast<PulseAudioEngine*>(userdata);
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pa_threaded_mainloop_signal(pulseEngine->mainloop(), 0);
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}
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static void contextSubscriptionCallback(pa_context *context, pa_subscription_event_type_t t, uint32_t idx, void *userdata)
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{
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PulseAudioEngine *pulseEngine = reinterpret_cast<PulseAudioEngine*>(userdata);
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foreach (AudioDevice *dev, pulseEngine->sinks()) {
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if (dev->index() == idx) {
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pulseEngine->requestSinkInfoUpdate(dev);
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break;
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}
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}
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}
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PulseAudioEngine::PulseAudioEngine(QObject *parent) :
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AudioEngine(parent),
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m_context(0),
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m_contextState(PA_CONTEXT_UNCONNECTED),
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m_ready(false),
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m_maximumVolume(PA_VOLUME_UI_MAX)
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{
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qRegisterMetaType<pa_context_state_t>("pa_context_state_t");
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m_reconnectionTimer.setSingleShot(true);
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m_reconnectionTimer.setInterval(100);
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connect(&m_reconnectionTimer, SIGNAL(timeout()), this, SLOT(connectContext()));
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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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m_mainLoop = 0;
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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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connect(this, SIGNAL(contextStateChanged(pa_context_state_t)), this, SLOT(handleContextStateChanged()));
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connectContext();
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}
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PulseAudioEngine::~PulseAudioEngine()
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{
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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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if (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 PulseAudioEngine::addOrUpdateSink(const pa_sink_info *info)
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{
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AudioDevice *dev = 0;
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bool newSink = false;
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QString name = QString::fromUtf8(info->name);
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foreach (AudioDevice *device, m_sinks) {
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if (device->name() == name) {
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dev = device;
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break;
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}
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}
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if (!dev) {
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dev = new AudioDevice(Sink, this);
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newSink = true;
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}
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dev->setName(name);
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dev->setIndex(info->index);
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dev->setDescription(QString::fromUtf8(info->description));
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dev->setMuteNoCommit(info->mute);
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// TODO: save separately? alsa does not have it
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m_cVolumeMap.insert(dev, info->volume);
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pa_volume_t v = pa_cvolume_avg(&(info->volume));
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// convert real volume to percentage
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dev->setVolumeNoCommit(((double)v * 100.0) / m_maximumVolume);
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if (newSink) {
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m_sinks.append(dev);
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emit sinkListChanged();
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}
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}
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void PulseAudioEngine::requestSinkInfoUpdate(AudioDevice *device)
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{
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emit sinkInfoChanged(device);
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}
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void PulseAudioEngine::commitDeviceVolume(AudioDevice *device)
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{
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if (!device || !m_ready)
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return;
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// convert from percentage to real volume value
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pa_volume_t v = ((double)device->volume() / 100.0) * m_maximumVolume;
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pa_cvolume tmpVolume = m_cVolumeMap.value(device);
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pa_cvolume *volume = pa_cvolume_set(&tmpVolume, tmpVolume.channels, v);
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// qDebug() << "PulseAudioEngine::commitDeviceVolume" << v;
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pa_threaded_mainloop_lock(m_mainLoop);
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pa_operation *operation;
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if (device->type() == Sink)
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operation = pa_context_set_sink_volume_by_index(m_context, device->index(), volume, contextSuccessCallback, this);
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else
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operation = pa_context_set_source_volume_by_index(m_context, device->index(), volume, contextSuccessCallback, 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 PulseAudioEngine::retrieveSinks()
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{
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if (!m_ready)
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return;
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pa_threaded_mainloop_lock(m_mainLoop);
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pa_operation *operation;
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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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}
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void PulseAudioEngine::setupSubscription()
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{
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if (!m_ready)
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return;
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connect(this, SIGNAL(sinkInfoChanged(AudioDevice*)), this, SLOT(retrieveSinkInfo(AudioDevice*)), Qt::QueuedConnection);
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pa_context_set_subscribe_callback(m_context, contextSubscriptionCallback, this);
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pa_threaded_mainloop_lock(m_mainLoop);
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pa_operation *operation;
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operation = pa_context_subscribe(m_context, PA_SUBSCRIPTION_MASK_SINK, contextSuccessCallback, 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 PulseAudioEngine::handleContextStateChanged()
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{
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if (m_contextState == PA_CONTEXT_FAILED || m_contextState == PA_CONTEXT_TERMINATED) {
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qWarning("LxQt-Volume: Context connection failed or terminated lets try to reconnect");
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m_reconnectionTimer.start();
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}
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}
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void PulseAudioEngine::connectContext()
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{
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bool keepGoing = true;
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bool ok = false;
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m_reconnectionTimer.stop();
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if (!m_mainLoop)
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return;
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pa_threaded_mainloop_lock(m_mainLoop);
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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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m_context = pa_context_new(m_mainLoopApi, "lxqt-volume");
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pa_context_set_state_callback(m_context, contextStateCallback, this);
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pa_context_set_event_callback(m_context, contextEventCallback, this);
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if (!m_context) {
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pa_threaded_mainloop_unlock(m_mainLoop);
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m_reconnectionTimer.start();
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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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pa_threaded_mainloop_unlock(m_mainLoop);
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m_reconnectionTimer.start();
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return;
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}
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while (keepGoing) {
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switch (m_contextState) {
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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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keepGoing = false;
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ok = true;
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break;
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case PA_CONTEXT_TERMINATED:
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keepGoing = false;
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break;
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case PA_CONTEXT_FAILED:
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default:
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qWarning() << QString("Connection failure: %1").arg(pa_strerror(pa_context_errno(m_context)));
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keepGoing = 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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pa_threaded_mainloop_unlock(m_mainLoop);
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if (ok) {
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retrieveSinks();
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setupSubscription();
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} else {
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m_reconnectionTimer.start();
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}
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}
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void PulseAudioEngine::retrieveSinkInfo(AudioDevice *device)
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{
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if (!m_ready)
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return;
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pa_threaded_mainloop_lock(m_mainLoop);
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pa_operation *operation;
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operation = pa_context_get_sink_info_by_index(m_context, device->index(), 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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}
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void PulseAudioEngine::setMute(AudioDevice *device, bool state)
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{
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if (!m_ready)
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return;
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pa_threaded_mainloop_lock(m_mainLoop);
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pa_operation *operation;
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operation = pa_context_set_sink_mute_by_index(m_context, device->index(), state, contextSuccessCallback, 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 PulseAudioEngine::setContextState(pa_context_state_t state)
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{
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if (m_contextState == state)
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return;
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m_contextState = state;
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// update ready member as it depends on state
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if (m_ready == (m_contextState == PA_CONTEXT_READY))
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return;
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m_ready = (m_contextState == PA_CONTEXT_READY);
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emit contextStateChanged(m_contextState);
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emit readyChanged(m_ready);
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}
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void PulseAudioEngine::setIgnoreMaxVolume(bool ignore)
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{
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if (ignore)
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m_maximumVolume = PA_VOLUME_UI_MAX;
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else
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m_maximumVolume = pa_sw_volume_from_dB(0);
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}
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