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authortnut <tnut at nutyx dot com>2012-01-08 12:15:45 +0100
committertnut <tnut at nutyx dot com>2012-01-08 12:15:45 +0100
commit3f57a7f93b3e7550cbd73036f6a56654e17d1d5c (patch)
tree819b14ab0377fe2054fe59866669d904e9e0b4b5 /phonon/pulsestream.cpp
parentc9972ec7f32bf9d37388e853fe9bf633e242d05a (diff)
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split de git pakxe et NuTyX-extra
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+/* This file is part of the KDE project
+ Copyright (C) 2010 Colin Guthrie <cguthrie@mandriva.org>
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) version 3, or any
+ later version accepted by the membership of KDE e.V. (or its
+ successor approved by the membership of KDE e.V.), Nokia Corporation
+ (or its successors, if any) and the KDE Free Qt Foundation, which shall
+ act as a proxy defined in Section 6 of version 3 of the license.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library. If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "pulsestream_p.h"
+#include <QtCore/qmath.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace Phonon
+{
+
+PulseStream::PulseStream(QString streamUuid)
+ : QObject()
+ , mStreamUuid(streamUuid)
+ , mIndex(PA_INVALID_INDEX)
+ , mDevice(-1)
+ , mMute(false)
+{
+ pa_cvolume_init(&mVolume);
+}
+
+PulseStream::~PulseStream()
+{
+}
+
+QString PulseStream::uuid()
+{
+ return mStreamUuid;
+}
+
+uint32_t PulseStream::index()
+{
+ return mIndex;
+}
+
+void PulseStream::setIndex(uint32_t index)
+{
+ mIndex = index;
+}
+
+uint8_t PulseStream::channels()
+{
+ return mVolume.channels;
+}
+
+void PulseStream::setDevice(int device)
+{
+ if (mDevice != device) {
+ mDevice = device;
+ emit usingDevice(device);
+ }
+}
+
+// Copied from AudioOutput
+static const qreal LOUDNESS_TO_VOLTAGE_EXPONENT = qreal(0.67);
+static const qreal VOLTAGE_TO_LOUDNESS_EXPONENT = qreal(1.0/LOUDNESS_TO_VOLTAGE_EXPONENT);
+
+void PulseStream::setVolume(const pa_cvolume *volume)
+{
+ if (pa_cvolume_equal(&mVolume, volume) == 0) {
+ memcpy(&mVolume, volume, sizeof(mVolume));
+ qreal vol = (qreal)pa_cvolume_avg(volume) / PA_VOLUME_NORM;
+ // AudioOutput expects the "backend" to supply values that have been
+ // adjusted for Stephens' law, so we need to fudge them accordingly
+ // so that the %ages match up in KMix/the application's own slider.
+ emit volumeChanged(qPow(vol, VOLTAGE_TO_LOUDNESS_EXPONENT));
+ }
+}
+
+void PulseStream::setMute(bool mute)
+{
+ if (mMute != mute) {
+ mMute = mute;
+ emit muteChanged(mMute);
+ }
+}
+
+
+} // namespace Phonon
+
+QT_END_NAMESPACE
+
+#include "moc_pulsestream_p.cpp"
+
+// vim: sw=4 ts=4