1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtMultimedia module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

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

    41 

    42 //

    43 //  W A R N I N G

    44 //  -------------

    45 //

    46 // This file is not part of the Qt API.  It exists for the convenience

    47 // of other Qt classes.  This header file may change from version to

    48 // version without notice, or even be removed.

    49 //

    50 // We mean it.

    51 //

    52 

    53 

    54 #ifndef QAUDIODEVICEINFOALSA_H

    55 #define QAUDIODEVICEINFOALSA_H

    56 

    57 #include <alsa/asoundlib.h>

    58 

    59 #include <QtCore/qbytearray.h>

    60 #include <QtCore/qstringlist.h>

    61 #include <QtCore/qlist.h>

    62 #include <QtCore/qdebug.h>

    63 

    64 #include <QtMultimedia/qaudio.h>

    65 #include <QtMultimedia/qaudiodeviceinfo.h>

    66 #include <QtMultimedia/qaudioengine.h>

    67 

    68 QT_BEGIN_NAMESPACE

    69 

    70 const unsigned int MAX_SAMPLE_RATES = 5;

    71 const unsigned int SAMPLE_RATES[] =

    72     { 8000, 11025, 22050, 44100, 48000 };

    73 

    74 class QAudioDeviceInfoInternal : public QAbstractAudioDeviceInfo

    75 {

    76     Q_OBJECT

    77 public:

    78     QAudioDeviceInfoInternal(QByteArray dev,QAudio::Mode mode);

    79     ~QAudioDeviceInfoInternal();

    80 

    81     bool testSettings(const QAudioFormat& format) const;

    82     void updateLists();

    83     QAudioFormat preferredFormat() const;

    84     bool isFormatSupported(const QAudioFormat& format) const;

    85     QAudioFormat nearestFormat(const QAudioFormat& format) const;

    86     QString deviceName() const;

    87     QStringList codecList();

    88     QList<int> frequencyList();

    89     QList<int> channelsList();

    90     QList<int> sampleSizeList();

    91     QList<QAudioFormat::Endian> byteOrderList();

    92     QList<QAudioFormat::SampleType> sampleTypeList();

    93     static QByteArray defaultInputDevice();

    94     static QByteArray defaultOutputDevice();

    95     static QList<QByteArray> deviceList(QAudio::Mode);

    96 

    97 private:

    98     bool open();

    99     void close();

   100 

   101     QString device;

   102     QAudio::Mode mode;

   103     QAudioFormat nearest;

   104     QList<int> freqz;

   105     QList<int> channelz;

   106     QList<int> sizez;

   107     QList<QAudioFormat::Endian> byteOrderz;

   108     QStringList codecz;

   109     QList<QAudioFormat::SampleType> typez;

   110     snd_pcm_t* handle;

   111     snd_pcm_hw_params_t *params;

   112 };

   113 

   114 QT_END_NAMESPACE

   115 

   116 #endif

   117