| 1 | /** |
| 2 | * Copyright (C) 2011-2012 Juho Vähä-Herttua |
| 3 | * |
| 4 | * This library is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU Lesser General Public |
| 6 | * License as published by the Free Software Foundation; either |
| 7 | * version 2.1 of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * This library is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * Lesser General Public License for more details. |
| 13 | */ |
| 14 | |
| 15 | #ifndef AUDIOOUTPUT_H |
| 16 | #define AUDIOOUTPUT_H |
| 17 | |
| 18 | #include <QObject> |
| 19 | #include <QIODevice> |
| 20 | #include <QByteArray> |
| 21 | #include <QAudioFormat> |
| 22 | #include <QAudioDeviceInfo> |
| 23 | #include <QAudioOutput> |
| 24 | #include <QIODevice> |
| 25 | |
| 26 | class AudioOutput : public QIODevice |
| 27 | { |
| 28 | Q_OBJECT |
| 29 | public: |
| 30 | explicit AudioOutput(QObject *parent = 0); |
| 31 | bool init(int bits, int channels, int samplerate); |
| 32 | bool setDevice(QAudioDeviceInfo deviceInfo); |
| 33 | |
| 34 | void start(); |
| 35 | void setVolume(float volume); |
| 36 | void output(const char *data, int datalen); |
| 37 | void flush(); |
| 38 | void stop(); |
| 39 | |
| 40 | qint64 readData(char *data, qint64 maxlen); |
| 41 | qint64 writeData(const char *data, qint64 len); |
| 42 | qint64 bytesAvailable() const; |
| 43 | bool isSequential() const; |
| 44 | |
| 45 | private: |
| 46 | void reinit(); |
| 47 | |
| 48 | private: |
| 49 | bool m_initialized; |
| 50 | QByteArray m_buffer; |
| 51 | QAudioFormat m_format; |
| 52 | QAudioDeviceInfo m_deviceInfo; |
| 53 | QAudioOutput* m_output; |
| 54 | float m_volume; |
| 55 | |
| 56 | signals: |
| 57 | |
| 58 | public slots: |
| 59 | |
| 60 | private slots: |
| 61 | void notified(); |
| 62 | void stateChanged(QAudio::State state); |
| 63 | }; |
| 64 | |
| 65 | #endif // AUDIOOUTPUT_H |