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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 151 insertions, 0 deletions

diff --git a/src/3rdparty/phonon/phonon/audiooutputinterface.h b/src/3rdparty/phonon/phonon/audiooutputinterface.h
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+++ b/src/3rdparty/phonon/phonon/audiooutputinterface.h
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+/*  This file is part of the KDE project
+    Copyright (C) 2007-2008 Matthias Kretz <kretz@kde.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/>.
+
+*/
+
+#ifndef PHONON_AUDIOOUTPUTINTERFACE_H
+#define PHONON_AUDIOOUTPUTINTERFACE_H
+
+#include "phononnamespace.h"
+#include "objectdescription.h"
+#include "phonondefs.h"
+#include <QtCore/QtGlobal>
+
+QT_BEGIN_HEADER
+QT_BEGIN_NAMESPACE
+
+namespace Phonon
+{
+/** \class AudioOutputInterface audiooutputinterface.h Phonon/AudioOutputInterface
+ * \short Interface for AudioOutput objects
+ *
+ * The implementation can make use of the signals
+ * \code
+     void volumeChanged(qreal newVolume);
+     void audioDeviceFailed();
+ * \endcode
+ * to notify the frontend whenever the volume has changed or when an audioDeviceFailed (e.g. USB
+ * unplug or sound server failure).
+ *
+ * \author Matthias Kretz <kretz@kde.org>
+ */
+class AudioOutputInterface40
+{
+    public:
+        virtual ~AudioOutputInterface40() {}
+
+        /**
+         * Returns the current software volume.
+         *
+         * A value of 0.0 means muted, 1.0 means unchanged, 2.0 means double voltage (i.e. all
+         * samples are multiplied by 2).
+         */
+        virtual qreal volume() const = 0;
+        /**
+         * Sets the new current software volume.
+         *
+         * A value of 0.0 means muted, 1.0 means unchanged, 2.0 means double voltage (i.e. all
+         * samples are multiplied by 2).
+         *
+         * Every time the volume in the backend changes it should emit volumeChanged(qreal), also
+         * inside this function.
+         */
+        virtual void setVolume(qreal) = 0;
+
+        /**
+         * Returns the index of the device that is used. The index is the number returned from
+         * BackendInterface::objectDescriptionIndexes(AudioOutputDeviceType).
+         */
+        virtual int outputDevice() const = 0;
+        /**
+         * \deprecated
+         *
+         * Requests to change the current output device to the one identified by the passed index.
+         *
+         * The index is the number returned from
+         * BackendInterface::objectDescriptionIndexes(AudioOutputDeviceType).
+         *
+         * \returns \c true if the requested device works and is used after this call.
+         * \returns \c false if something failed and the device is not used after this call.
+         */
+        virtual bool setOutputDevice(int) = 0;
+};
+
+class AudioOutputInterface42 : public AudioOutputInterface40
+{
+    public:
+        /**
+         * Requests to change the current output device.
+         *
+         * \returns \c true if the requested device works and is used after this call.
+         * \returns \c false if something failed and the device is not used after this call.
+         */
+        virtual bool setOutputDevice(const Phonon::AudioOutputDevice &) = 0;
+
+        using AudioOutputInterface40::setOutputDevice;
+
+        /**
+         * Helper function for backends to get a list of (driver, handle) pairs for
+         * AudioOutputDevice objects that are listed by the platform plugin.
+         *
+         * Example:
+         * \code
+           typedef QPair<QByteArray, QString> PhononDeviceAccess;
+           const QList<PhononDeviceAccess> &deviceAccessList = deviceAccessListFor(deviceDesc);
+           foreach (const PhononDeviceAccess &access, deviceAccessList) {
+               const QByteArray &driver = access.first;
+               const QString &handle = access.second;
+               if (openDevice(driver, handle)) {
+                   // we found the first pair in the list that works. done.
+                   return;
+               }
+               // continue trying the other (driver, handle) pairs
+           }
+           // none of the (driver, handle) pairs worked, that means the whole AudioOutputDevice is
+           // inaccessible and the frontend needs to know (either by emitting audioDeviceFailed or
+           // returning false when called from setOutputDevice)
+         * \endcode
+         *
+         * At the time of this writing the following driver strings are known to be in use:
+         * \li \c alsa: The handle is the string to pass to snd_pcm_open (e.g. "dmix:CARD=0,DEV=1")
+         * \li \c oss: The handle is the device file (e.g. "/dev/dsp")
+         * \li \c pulseaudio: The handle contains the server string and the sink/source name
+         * separated by a newline character.
+         * (e.g. unix:/tmp/pulse-mkretz/native\nalsa_output.pci_8086_293e_sound_card_0_alsa_playback_0)
+         */
+        PHONON_EXPORT QList<QPair<QByteArray, QString> > deviceAccessListFor(const Phonon::AudioOutputDevice &) const;
+};
+
+} // namespace Phonon
+
+#ifdef PHONON_BACKEND_VERSION_4_2
+namespace Phonon { typedef AudioOutputInterface42 AudioOutputInterface; }
+Q_DECLARE_INTERFACE(Phonon::AudioOutputInterface40, "AudioOutputInterface2.phonon.kde.org")
+Q_DECLARE_INTERFACE(Phonon::AudioOutputInterface,   "3AudioOutputInterface.phonon.kde.org")
+#else
+namespace Phonon { typedef AudioOutputInterface40 AudioOutputInterface; }
+Q_DECLARE_INTERFACE(Phonon::AudioOutputInterface,   "AudioOutputInterface2.phonon.kde.org")
+Q_DECLARE_INTERFACE(Phonon::AudioOutputInterface42, "3AudioOutputInterface.phonon.kde.org")
+#endif
+
+QT_END_NAMESPACE
+QT_END_HEADER
+
+#endif // PHONON_AUDIOOUTPUTINTERFACE_H