1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QAUDIOOUTPUTPULSE_H 41 #define QAUDIOOUTPUTPULSE_H 42 43 // 44 // W A R N I N G 45 // ------------- 46 // 47 // This file is not part of the Qt API. It exists purely as an 48 // implementation detail. This header file may change from version to 49 // version without notice, or even be removed. 50 // 51 // We mean it. 52 // 53 54 #include <QtCore/qfile.h> 55 #include <QtCore/qtimer.h> 56 #include <QtCore/qstring.h> 57 #include <QtCore/qstringlist.h> 58 #include <QtCore/qelapsedtimer.h> 59 #include <QtCore/qiodevice.h> 60 61 #include "qaudio.h" 62 #include "qaudiodeviceinfo.h" 63 #include "qaudiosystem.h" 64 65 #include <pulse/pulseaudio.h> 66 67 QT_BEGIN_NAMESPACE 68 69 class QPulseAudioOutput : public QAbstractAudioOutput 70 { 71 friend class PulseOutputPrivate; 72 Q_OBJECT 73 74 public: 75 QPulseAudioOutput(const QByteArray &device); 76 ~QPulseAudioOutput(); 77 78 void start(QIODevice *device) override; 79 QIODevice *start() override; 80 void stop() override; 81 void reset() override; 82 void suspend() override; 83 void resume() override; 84 int bytesFree() const override; 85 int periodSize() const override; 86 void setBufferSize(int value) override; 87 int bufferSize() const override; 88 void setNotifyInterval(int milliSeconds) override; 89 int notifyInterval() const override; 90 qint64 processedUSecs() const override; 91 qint64 elapsedUSecs() const override; 92 QAudio::Error error() const override; 93 QAudio::State state() const override; 94 void setFormat(const QAudioFormat &format) override; 95 QAudioFormat format() const override; 96 97 void setVolume(qreal volume) override; 98 qreal volume() const override; 99 100 void setCategory(const QString &category) override; 101 QString category() const override; 102 103 public: 104 void streamUnderflowCallback(); 105 106 private: 107 void setState(QAudio::State state); 108 void setError(QAudio::Error error); 109 110 bool open(); 111 void close(); 112 qint64 write(const char *data, qint64 len); 113 114 private Q_SLOTS: 115 void userFeed(); 116 void onPulseContextFailed(); 117 118 private: 119 QByteArray m_device; 120 QByteArray m_streamName; 121 QAudioFormat m_format; 122 QAudio::Error m_errorState; 123 QAudio::State m_deviceState; 124 bool m_pullMode; 125 bool m_opened; 126 QIODevice *m_audioSource; 127 QTimer m_periodTimer; 128 int m_periodTime; 129 pa_stream *m_stream; 130 int m_notifyInterval; 131 int m_periodSize; 132 int m_bufferSize; 133 int m_maxBufferSize; 134 QElapsedTimer m_clockStamp; 135 qint64 m_totalTimeValue; 136 QTimer *m_tickTimer; 137 char *m_audioBuffer; 138 QElapsedTimer m_timeStamp; 139 qint64 m_elapsedTimeOffset; 140 bool m_resuming; 141 QString m_category; 142 143 qreal m_volume; 144 pa_sample_spec m_spec; 145 }; 146 147 class PulseOutputPrivate : public QIODevice 148 { 149 friend class QPulseAudioOutput; 150 Q_OBJECT 151 152 public: 153 PulseOutputPrivate(QPulseAudioOutput *audio); ~PulseOutputPrivate()154 virtual ~PulseOutputPrivate() {} 155 156 protected: 157 qint64 readData(char *data, qint64 len) override; 158 qint64 writeData(const char *data, qint64 len) override; 159 160 private: 161 QPulseAudioOutput *m_audioDevice; 162 }; 163 164 QT_END_NAMESPACE 165 166 #endif 167