File indexing completed on 2024-05-12 05:36:42

 /*
     SPDX-FileCopyrightText: 2008 Helio Chissini de Castro <helio@kde.org>
     SPDX-FileCopyrightText: 2016 David Rosca <nowrep@gmail.com>
 
     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "volumefeedback.h"
 #include "canberracontext.h"
 #include "soundthemeconfig.h"
 
 VolumeFeedback::VolumeFeedback(QObject *parent)
     : QObject(parent)
     , m_config(new SoundThemeConfig(this))
 {
     QPulseAudio::CanberraContext::instance()->ref();
     if (ca_context_set_driver(QPulseAudio::CanberraContext::instance()->canberra(), "pulse") != CA_SUCCESS) {
         return;
     }
 
     connect(m_config, &SoundThemeConfig::soundThemeChanged, this, &VolumeFeedback::updateCachedSound);
     updateCachedSound();
 }
 
 VolumeFeedback::~VolumeFeedback()
 {
     QPulseAudio::CanberraContext::instance()->unref();
 }
 
 bool VolumeFeedback::isValid() const
 {
     return QPulseAudio::CanberraContext::instance()->canberra();
 }
 
 void VolumeFeedback::play(quint32 sinkIndex)
 {
     auto context = QPulseAudio::CanberraContext::instance()->canberra();
 
     if (!context) {
         return;
     }
 
     int playing = 0;
     const int cindex = 2; // Note "2" is simply the index we've picked. It's somewhat irrelevant.
     ca_context_playing(context, cindex, &playing);
 
     // NB Depending on how this is desired to work, we may want to simply
     // skip playing, or cancel the currently playing sound and play our
     // new one... for now, let's do the latter.
     if (playing) {
         ca_context_cancel(context, cindex);
     }
 
     char dev[64];
     snprintf(dev, sizeof(dev), "%lu", (unsigned long)sinkIndex);
     ca_context_change_device(context, dev);
 
     // Ideally we'd use something like ca_gtk_play_for_widget()...
     /* clang-format off */
     ca_context_play(context, cindex,
                     CA_PROP_EVENT_ID, "audio-volume-change",
                     CA_PROP_CANBERRA_CACHE_CONTROL, "permanent", // For better performance
                     nullptr);
     /* clang-format on */
 
     ca_context_change_device(context, nullptr);
 }
 
 void VolumeFeedback::updateCachedSound()
 {
     auto context = QPulseAudio::CanberraContext::instance()->canberra();
     if (!context) {
         return;
     }
 
     /* clang-format off */
     ca_context_cache(context,
                      CA_PROP_EVENT_DESCRIPTION, "Volume Control Feedback Sound",
                      CA_PROP_EVENT_ID, "audio-volume-change",
                      CA_PROP_CANBERRA_ENABLE, "1",
                      CA_PROP_CANBERRA_XDG_THEME_NAME, m_config->soundTheme().toLatin1().constData(),
                      nullptr);
     /* clang-format on */
 }