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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the Qt Mobility Components. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 |
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43 #include <qmediaplaylistsourcecontrol.h> |
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44 #include <qmediacontrol_p.h> |
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45 |
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46 QT_BEGIN_NAMESPACE |
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47 |
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48 /*! |
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49 \class QMediaPlaylistSourceControl |
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50 \ingroup multimedia |
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51 |
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52 \preliminary |
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53 \brief The QMediaPlaylistSourceControl class provides access to the playlist playback |
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54 functionality of a QMediaService. |
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55 |
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56 This control allows QMediaPlaylist to be passed directly to the service |
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57 instead of playing media sources one by one. This control should be |
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58 implemented if backend benefits from knowing the next media source to be |
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59 played, for example for preloading, cross fading or gap-less playback. |
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60 |
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61 If QMediaPlaylistSourceControl is provided, the backend must listen for |
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62 current playlist item changes to load corresponding media source and |
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63 advance the playlist with QMediaPlaylist::next() when playback of the |
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64 current media is finished. |
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65 |
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66 The interface name of QMediaPlaylistSourceControl is \c com.nokia.Qt.QMediaPlaylistSourceControl/1.0 as |
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67 defined in QMediaPlaylistSourceControl_iid. |
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68 |
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69 \sa QMediaService::requestControl(), QMediaPlayer |
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70 */ |
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71 |
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72 /*! |
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73 \macro QMediaPlaylistSourceControl_iid |
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74 |
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75 \c com.nokia.Qt.QMediaPlaylistSourceControl/1.0 |
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76 |
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77 Defines the interface name of the QMediaPlaylistSourceControl class. |
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78 |
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79 \relates QMediaPlaylistSourceControl |
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80 */ |
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81 |
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82 /*! |
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83 Create a new playlist source control object with the given \a parent. |
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84 */ |
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85 QMediaPlaylistSourceControl::QMediaPlaylistSourceControl(QObject *parent): |
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86 QMediaControl(*new QMediaControlPrivate, parent) |
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87 { |
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88 } |
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89 |
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90 /*! |
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91 Destroys the playlist control. |
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92 */ |
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93 QMediaPlaylistSourceControl::~QMediaPlaylistSourceControl() |
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94 { |
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95 } |
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96 |
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97 |
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98 /*! |
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99 \fn QMediaPlaylistSourceControl::playlist() const |
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100 |
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101 Returns the current playlist. |
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102 Should return a null pointer if no playlist is assigned. |
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103 */ |
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104 |
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105 /*! |
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106 \fn QMediaPlaylistSourceControl::setPlaylist(QMediaPlaylist *playlist) |
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107 |
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108 Set the playlist of this media player to \a playlist. |
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109 If a null pointer is passed, the playlist source should be disabled. |
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110 |
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111 The current media should be replaced with the current item of the media playlist. |
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112 */ |
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113 |
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114 |
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115 /*! |
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116 \fn QMediaPlaylistSourceControl::playlistChanged(QMediaPlaylist*) |
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117 |
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118 Signal emited when the playlist has changed. |
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119 */ |
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120 |
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121 #include "moc_qmediaplaylistsourcecontrol.cpp" |
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122 QT_END_NAMESPACE |
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123 |