This file is indexed.

/usr/include/phonon/backendinterface.h is in libphonon-dev 4:4.7.1-0ubuntu8.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
/*  This file is part of the KDE project
    Copyright (C) 2006-2007 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_BACKENDINTERFACE_H
#define PHONON_BACKENDINTERFACE_H

#include "phonon_export.h"
#include "objectdescription.h"

#include <QtCore/QtGlobal>
#include <QtCore/QSet>


class QVariant;

namespace Phonon
{

/** \class BackendInterface backendinterface.h phonon/BackendInterface
 * \short Main Backend class interface
 *
 * This interface defines the main factory of the backend. The createObject function creates all the
 * objects needed by the frontend.
 *
 * The objectDescriptionIndexes and objectDescriptionProperties functions return information about
 * available devices, effects and codecs.
 *
 * An implementation could look like this:
 * \code
 * QObject *Backend::createObject(BackendInterface::Class c, QObject *parent, const QList<QVariant> &args)
 * {
 *     switch (c) {
 *     case MediaObjectClass:
 *         return new MediaObject(parent);
 *     case VolumeFaderEffectClass:
 *         return new VolumeFaderEffect(parent);
 *     case AudioOutputClass:
 *         return new AudioOutput(parent);
 *     case AudioDataOutputClass:
 *         return new AudioDataOutput(parent);
 *     case VisualizationClass:
 *         return new Visualization(parent);
 *     case VideoDataOutputClass:
 *         return new VideoDataOutput(parent);
 *     case EffectClass:
 *         return new Effect(args[0].toInt(), parent);
 *     case VideoWidgetClass:
 *         return new VideoWidget(qobject_cast<QWidget *>(parent));
 *     }
 *     return 0;
 * }
 *
 * QSet<int> Backend::objectDescriptionIndexes(ObjectDescriptionType type) const
 * {
 *     QSet<int> set;
 *     switch(type)
 *     {
 *     case Phonon::AudioOutputDeviceType:
 *         // use AudioDeviceEnumerator to list ALSA and OSS devices
 *         set << 10000 << 10001;
 *         break;
 *     case Phonon::AudioCaptureDeviceType:
 *         set << 20000 << 20001;
 *         break;
 *     case Phonon::VideoOutputDeviceType:
 *         break;
 *     case Phonon::VideoCaptureDeviceType:
 *         set << 30000 << 30001;
 *         break;
 *     case Phonon::VisualizationType:
 *     case Phonon::AudioCodecType:
 *     case Phonon::VideoCodecType:
 *     case Phonon::ContainerFormatType:
 *         break;
 *     case Phonon::EffectType:
 *         set << 0x7F000001;
 *         break;
 *     }
 *     return set;
 * }
 *
 * QHash<QByteArray, QVariant> Backend::objectDescriptionProperties(ObjectDescriptionType type, int index) const
 * {
 *     QHash<QByteArray, QVariant> ret;
 *     switch (type) {
 *     case Phonon::AudioOutputDeviceType:
 *         switch (index) {
 *         case 10000:
 *             ret.insert("name", QLatin1String("internal Soundcard"));
 *             break;
 *         case 10001:
 *             ret.insert("name", QLatin1String("USB Headset"));
 *             ret.insert("icon", KIcon("usb-headset"));
 *             ret.insert("available", false);
 *             break;
 *         }
 *         break;
 *     case Phonon::AudioCaptureDeviceType:
 *         switch (index) {
 *         case 20000:
 *             ret.insert("name", QLatin1String("Soundcard"));
 *             ret.insert("description", QLatin1String("first description"));
 *             break;
 *         case 20001:
 *             ret.insert("name", QLatin1String("DV"));
 *             ret.insert("description", QLatin1String("second description"));
 *             break;
 *         }
 *         break;
 *     case Phonon::VideoOutputDeviceType:
 *         break;
 *     case Phonon::VideoCaptureDeviceType:
 *         switch (index) {
 *         case 30000:
 *             ret.insert("name", QLatin1String("USB Webcam"));
 *             ret.insert("description", QLatin1String("first description"));
 *             break;
 *         case 30001:
 *             ret.insert("name", QLatin1String("DV"));
 *             ret.insert("description", QLatin1String("second description"));
 *             break;
 *         }
 *         break;
 *     case Phonon::VisualizationType:
 *         break;
 *     case Phonon::AudioCodecType:
 *         break;
 *     case Phonon::VideoCodecType:
 *         break;
 *     case Phonon::ContainerFormatType:
 *         break;
 *     case Phonon::EffectType:
 *         switch (index) {
 *         case 0x7F000001:
 *             ret.insert("name", QLatin1String("Delay"));
 *             ret.insert("description", QLatin1String("Simple delay effect with time, feedback and level controls."));
 *             break;
 *         }
 *         break;
 *     }
 *     return ret;
 * }
 * \endcode
 *
 * \author Matthias Kretz <kretz@kde.org>
 */
class BackendInterface
{
    public:
        /**
         * \internal
         *
         * Silence gcc's warning.
         */
        virtual ~BackendInterface() {}

        /**
         * Classes that the createObject function has to handle.
         */
        enum Class {
            /**
             * Request to return a %MediaObject object.
             */
            MediaObjectClass,
            /**
             * Request to return a %VolumeFaderEffect object.
             */
            VolumeFaderEffectClass,
            /**
             * Request to return a %AudioOutput object.
             */
            AudioOutputClass,
            /**
             * Request to return a %AudioDataOutput object.
             */
            AudioDataOutputClass,
            /**
             * Request to return a %Visualization object.
             */
            VisualizationClass,
            /**
             * Request to return a %VideoDataOutput object.
             */
            VideoDataOutputClass,
            /**
             * Request to return a %Effect object.
             *
             * Takes an additional int that specifies the effect Id.
             */
            EffectClass,
            /**
             * Request to return a %VideoWidget object.
             */
            VideoWidgetClass,
            VideoGraphicsObjectClass /* < Request to return a %VideoGraphicsObject */
        };

        /**
         * Returns a new instance of the requested class.
         *
         * \param c The requested class.
         * \param parent The parent object.
         * \param args Additional arguments (documented in \ref Class).
         */
        virtual QObject *createObject(Class c, QObject *parent, const QList<QVariant> &args = QList<QVariant>()) = 0;

        /**
         * Returns the unique identifiers for the devices/effects/codecs of the given \p type.
         *
         * \param type see \ref ObjectDescriptionType
         */
        virtual QList<int> objectDescriptionIndexes(ObjectDescriptionType type) const = 0;

        /**
         * Given a unique identifier that was returned from objectDescriptionIndexes this function
         * returns a hash mapping property names to values.
         *
         * The property "name" must always be present. All other properties are optional.
         *
         * List of possible properties:
         * \li \c \b name: The name of the device/effect/codec/...
         * \li \c \b description: A text explaining what this device/effect/codec/... is/can do
         * \li \c \b icon: An icon name (using the freedesktop naming scheme) or a QIcon for this
         * device/effect/codec/...
         * \li \c \b available: A bool telling whether the device is present or unplugged.
         *
         * \param type see \ref ObjectDescriptionType
         * \param index The unique identifier that is returned from objectDescriptionIndexes
         */
        virtual QHash<QByteArray, QVariant> objectDescriptionProperties(ObjectDescriptionType type, int index) const = 0;

        /**
         * When this function is called the nodes given in the parameter list should not lose any
         * signal data when connections are changed.
         */
        virtual bool startConnectionChange(QSet<QObject *>) = 0;

        /**
         * Defines a signal connection between the two given nodes.
         */
        virtual bool connectNodes(QObject *, QObject *) = 0;

        /**
         * Cuts a signal connection between the two given nodes.
         */
        virtual bool disconnectNodes(QObject *, QObject *) = 0;

        /**
         * When this function is called the nodes given in the parameter list may lose
         * signal data when a port is not connected.
         */
        virtual bool endConnectionChange(QSet<QObject *>) = 0;

        /**
         * gets all available mime types
         */
        virtual QStringList availableMimeTypes() const = 0;

};
} // namespace Phonon

Q_DECLARE_INTERFACE(Phonon::BackendInterface, "BackendInterface3.phonon.kde.org")


#endif // PHONON_BACKENDINTERFACE_H