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     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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     7 ** This file is part of the Qt Mobility Components.

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    16 ** GNU Lesser General Public License Usage

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    40 ****************************************************************************/

    41 

    42 #ifndef QMEDIASERVICEPROVIDER_H

    43 #define QMEDIASERVICEPROVIDER_H

    44 

    45 #include <QtCore/qobject.h>

    46 #include <QtCore/qshareddata.h>

    47 #include <qmobilityglobal.h>

    48 #include "qtmedianamespace.h"

    49 

    50 QT_BEGIN_NAMESPACE

    51 

    52 class QMediaService;

    53 

    54 class QMediaServiceProviderHintPrivate;

    55 class Q_MULTIMEDIA_EXPORT QMediaServiceProviderHint

    56 {

    57 public:

    58     enum Type { Null, ContentType, Device, SupportedFeatures };

    59 

    60     enum Feature {

    61         LowLatencyPlayback = 0x01,

    62         RecordingSupport = 0x02,

    63         StreamPlayback = 0x04

    64     };

    65     Q_DECLARE_FLAGS(Features, Feature)

    66 

    67     QMediaServiceProviderHint();

    68     QMediaServiceProviderHint(const QString &mimeType, const QStringList& codecs);

    69     QMediaServiceProviderHint(const QByteArray &device);

    70     QMediaServiceProviderHint(Features features);

    71     QMediaServiceProviderHint(const QMediaServiceProviderHint &other);

    72     ~QMediaServiceProviderHint();

    73 

    74     QMediaServiceProviderHint& operator=(const QMediaServiceProviderHint &other);

    75 

    76     bool operator == (const QMediaServiceProviderHint &other) const;

    77     bool operator != (const QMediaServiceProviderHint &other) const;

    78 

    79     bool isNull() const;

    80 

    81     Type type() const;

    82 

    83     QString mimeType() const;

    84     QStringList codecs() const;

    85 

    86     QByteArray device() const;

    87 

    88     Features features() const;

    89 

    90     //to be extended, if necessary

    91 

    92 private:

    93     QSharedDataPointer<QMediaServiceProviderHintPrivate> d;

    94 };

    95 

    96 class Q_MULTIMEDIA_EXPORT QMediaServiceProvider : public QObject

    97 {

    98     Q_OBJECT

    99 

   100 public:

   101     virtual QMediaService* requestService(const QByteArray &type, const QMediaServiceProviderHint &hint = QMediaServiceProviderHint()) = 0;

   102     virtual void releaseService(QMediaService *service) = 0;

   103 

   104     virtual QtMultimediaKit::SupportEstimate hasSupport(const QByteArray &serviceType,

   105                                              const QString &mimeType,

   106                                              const QStringList& codecs,

   107                                              int flags = 0) const;

   108     virtual QStringList supportedMimeTypes(const QByteArray &serviceType, int flags = 0) const;

   109 

   110     virtual QList<QByteArray> devices(const QByteArray &serviceType) const;

   111     virtual QString deviceDescription(const QByteArray &serviceType, const QByteArray &device);

   112 

   113     static QMediaServiceProvider* defaultServiceProvider();

   114 

   115 #ifdef QT_BUILD_INTERNAL

   116     static void setDefaultServiceProvider(QMediaServiceProvider *provider);

   117 #endif

   118 };

   119 

   120 /*!

   121     Service with support for media playback

   122     Required Controls: QMediaPlayerControl

   123     Optional Controls: QMediaPlaylistControl, QAudioDeviceControl

   124     Video Output Controls (used by QWideoWidget and QGraphicsVideoItem):

   125                         Required: QVideoOutputControl

   126                         Optional: QVideoWindowControl, QVideoRendererControl, QVideoWidgetControl

   127 */

   128 #define Q_MEDIASERVICE_MEDIAPLAYER "com.nokia.qt.mediaplayer"

   129 

   130 /*!

   131    Service with support for recording from audio sources

   132    Required Controls: QAudioDeviceControl

   133    Recording Controls (QMediaRecorder):

   134                         Required: QMediaRecorderControl

   135                         Recommended: QAudioEncoderControl

   136                         Optional: QMediaContainerControl

   137 */

   138 #define Q_MEDIASERVICE_AUDIOSOURCE "com.nokia.qt.audiosource"

   139 

   140 /*!

   141     Service with support for camera use.

   142     Required Controls: QCameraControl

   143     Optional Controls: QCameraExposureControl, QCameraFocusControl, QImageProcessingControl

   144     Still Capture Controls: QImageCaptureControl

   145     Recording Controls (QMediaRecorder):

   146                         Required: QMediaRecorderControl

   147                         Recommended: QAudioEncoderControl, QVideoEncoderControl, QMediaContainerControl

   148     Viewfinder Video Output Controls (used by QWideoWidget and QGraphicsVideoItem):

   149                         Required: QVideoOutputControl

   150                         Optional: QVideoWindowControl, QVideoRendererControl, QVideoWidgetControl

   151 */

   152 #define Q_MEDIASERVICE_CAMERA "com.nokia.qt.camera"

   153 

   154 /*!

   155     Service with support for radio tuning.

   156     Required Controls: QRadioTunerControl

   157     Recording Controls (Optional, used by QMediaRecorder):

   158                         Required: QMediaRecorderControl

   159                         Recommended: QAudioEncoderControl

   160                         Optional: QMediaContainerControl

   161 */

   162 #define Q_MEDIASERVICE_RADIO "com.nokia.qt.radio"

   163 

   164 

   165 QT_END_NAMESPACE

   166 

   167 #endif  // QMEDIASERVICEPROVIDER_H