5e801e2793
As in the past, to avoid rewriting various autotests that contain line-number information, an extra blank line has been inserted at the end of the license text to ensure that this commit does not change the total number of lines in the license header. Change-Id: I20e5215108c6ebd5f8474fed5c3665118e4791e6 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
192 lines
4.6 KiB
C++
192 lines
4.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists for the convenience
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// of other Qt classes. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#ifndef QAUDIOINPUTALSA_H
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#define QAUDIOINPUTALSA_H
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#include <alsa/asoundlib.h>
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#include <QtCore/qfile.h>
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#include <QtCore/qdebug.h>
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#include <QtCore/qtimer.h>
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#include <QtCore/qstring.h>
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#include <QtCore/qstringlist.h>
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#include <QtCore/qdatetime.h>
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#include "qaudio.h"
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#include "qaudiodeviceinfo.h"
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#include "qaudiosystem.h"
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(Multimedia)
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class InputPrivate;
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class RingBuffer
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{
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public:
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RingBuffer();
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void resize(int size);
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int bytesOfDataInBuffer() const;
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int freeBytes() const;
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const char *availableData() const;
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int availableDataBlockSize() const;
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void readBytes(int bytes);
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void write(char *data, int len);
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private:
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int m_head;
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int m_tail;
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QByteArray m_data;
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};
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class QAudioInputPrivate : public QAbstractAudioInput
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{
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Q_OBJECT
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public:
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QAudioInputPrivate(const QByteArray &device);
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~QAudioInputPrivate();
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qint64 read(char* data, qint64 len);
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void start(QIODevice* device);
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QIODevice* start();
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void stop();
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void reset();
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void suspend();
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void resume();
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int bytesReady() const;
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int periodSize() const;
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void setBufferSize(int value);
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int bufferSize() const;
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void setNotifyInterval(int milliSeconds);
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int notifyInterval() const;
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qint64 processedUSecs() const;
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qint64 elapsedUSecs() const;
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QAudio::Error error() const;
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QAudio::State state() const;
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void setFormat(const QAudioFormat& fmt);
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QAudioFormat format() const;
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bool resuming;
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snd_pcm_t* handle;
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qint64 totalTimeValue;
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QIODevice* audioSource;
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QAudioFormat settings;
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QAudio::Error errorState;
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QAudio::State deviceState;
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private slots:
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void userFeed();
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bool deviceReady();
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private:
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int checkBytesReady();
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int xrun_recovery(int err);
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int setFormat();
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bool open();
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void close();
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void drain();
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QTimer* timer;
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QTime timeStamp;
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QTime clockStamp;
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qint64 elapsedTimeOffset;
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int intervalTime;
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RingBuffer ringBuffer;
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int bytesAvailable;
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QByteArray m_device;
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bool pullMode;
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int buffer_size;
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int period_size;
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unsigned int buffer_time;
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unsigned int period_time;
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snd_pcm_uframes_t buffer_frames;
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snd_pcm_uframes_t period_frames;
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snd_async_handler_t* ahandler;
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snd_pcm_access_t access;
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snd_pcm_format_t pcmformat;
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snd_timestamp_t* timestamp;
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snd_pcm_hw_params_t *hwparams;
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};
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class InputPrivate : public QIODevice
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{
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Q_OBJECT
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public:
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InputPrivate(QAudioInputPrivate* audio);
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~InputPrivate();
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qint64 readData( char* data, qint64 len);
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qint64 writeData(const char* data, qint64 len);
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void trigger();
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private:
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QAudioInputPrivate *audioDevice;
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};
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif
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