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Diffstat (limited to 'src/plugins/alsa/qalsaaudioinput.h')
| -rw-r--r-- | src/plugins/alsa/qalsaaudioinput.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/src/plugins/alsa/qalsaaudioinput.h b/src/plugins/alsa/qalsaaudioinput.h new file mode 100644 index 000000000..6af566c8b --- /dev/null +++ b/src/plugins/alsa/qalsaaudioinput.h @@ -0,0 +1,188 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// +// 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/qaudiosystem.h> + +QT_BEGIN_NAMESPACE + + +class InputPrivate; + +class RingBuffer +{ +public: + RingBuffer(); + + void resize(int size); + + int bytesOfDataInBuffer() const; + int freeBytes() const; + + const char *availableData() const; + int availableDataBlockSize() const; + void readBytes(int bytes); + + void write(char *data, int len); + +private: + int m_head; + int m_tail; + + QByteArray m_data; +}; + +class QAlsaAudioInput : public QAbstractAudioInput +{ + Q_OBJECT +public: + QAlsaAudioInput(const QByteArray &device); + ~QAlsaAudioInput(); + + qint64 read(char* data, qint64 len); + + void start(QIODevice* device); + QIODevice* start(); + 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 processedUSecs() const; + qint64 elapsedUSecs() const; + QAudio::Error error() const; + QAudio::State state() const; + void setFormat(const QAudioFormat& fmt); + QAudioFormat format() const; + void setVolume(qreal); + qreal volume() 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 checkBytesReady(); + int xrun_recovery(int err); + int setFormat(); + bool open(); + void close(); + void drain(); + + QTimer* timer; + QTime timeStamp; + QTime clockStamp; + qint64 elapsedTimeOffset; + int intervalTime; + RingBuffer ringBuffer; + 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; + qreal m_volume; +}; + +class InputPrivate : public QIODevice +{ + Q_OBJECT +public: + InputPrivate(QAlsaAudioInput* audio); + ~InputPrivate(); + + qint64 readData( char* data, qint64 len); + qint64 writeData(const char* data, qint64 len); + + void trigger(); +private: + QAlsaAudioInput *audioDevice; +}; + +QT_END_NAMESPACE + + +#endif |