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Diffstat (limited to 'src/multimedia/audio/qaudioinput_alsa_p.h')
| -rw-r--r-- | src/multimedia/audio/qaudioinput_alsa_p.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/src/multimedia/audio/qaudioinput_alsa_p.h b/src/multimedia/audio/qaudioinput_alsa_p.h new file mode 100644 index 0000000..21c8064 --- /dev/null +++ b/src/multimedia/audio/qaudioinput_alsa_p.h @@ -0,0 +1,151 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtMultimedia module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of other Qt classes. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + + +#ifndef QAUDIOINPUTALSA_H +#define QAUDIOINPUTALSA_H + +#include <alsa/asoundlib.h> + +#include <QtCore/qfile.h> +#include <QtCore/qdebug.h> +#include <QtCore/qtimer.h> +#include <QtCore/qstring.h> +#include <QtCore/qstringlist.h> +#include <QtCore/qdatetime.h> + +#include <QtMultimedia/qaudio.h> +#include <QtMultimedia/qaudiodeviceinfo.h> +#include <QtMultimedia/qaudioengine.h> + +class InputPrivate; + +class QAudioInputPrivate : public QAbstractAudioInput +{ + Q_OBJECT +public: + QAudioInputPrivate(const QByteArray &device, const QAudioFormat& audioFormat); + ~QAudioInputPrivate(); + + qint64 read(char* data, qint64 len); + + QIODevice* start(QIODevice* device = 0); + void stop(); + void reset(); + void suspend(); + void resume(); + int bytesReady() const; + int periodSize() const; + void setBufferSize(int value); + int bufferSize() const; + void setNotifyInterval(int milliSeconds); + int notifyInterval() const; + qint64 totalTime() const; + qint64 clock() const; + QAudio::Error error() const; + QAudio::State state() const; + QAudioFormat format() const; + bool resuming; + snd_pcm_t* handle; + qint64 totalTimeValue; + QIODevice* audioSource; + QAudioFormat settings; + QAudio::Error errorState; + QAudio::State deviceState; + +private slots: + void userFeed(); + bool deviceReady(); + +private: + int xrun_recovery(int err); + int setFormat(); + bool open(); + void close(); + void drain(); + + QTimer* timer; + QTime timeStamp; + int intervalTime; + char* audioBuffer; + int bytesAvailable; + QByteArray m_device; + bool pullMode; + int buffer_size; + int period_size; + unsigned int buffer_time; + unsigned int period_time; + snd_pcm_uframes_t buffer_frames; + snd_pcm_uframes_t period_frames; + snd_async_handler_t* ahandler; + snd_pcm_access_t access; + snd_pcm_format_t pcmformat; + snd_timestamp_t* timestamp; + snd_pcm_hw_params_t *hwparams; +}; + +class InputPrivate : public QIODevice +{ + Q_OBJECT +public: + InputPrivate(QAudioInputPrivate* audio); + ~InputPrivate(); + + qint64 readData( char* data, qint64 len); + qint64 writeData(const char* data, qint64 len); + + void trigger(); +private: + QAudioInputPrivate *audioDevice; +}; + +#endif |