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| ****************************************************************************/ |
| |
| // |
| // 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/qelapsedtimer.h> |
| #include <QtCore/qiodevice.h> |
| |
| #include <QtMultimedia/qaudio.h> |
| #include <QtMultimedia/qaudiodeviceinfo.h> |
| #include <QtMultimedia/qaudiosystem.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| |
| class AlsaInputPrivate; |
| |
| 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; |
| QElapsedTimer timeStamp; |
| QElapsedTimer 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_pcm_access_t access; |
| snd_pcm_format_t pcmformat; |
| snd_pcm_hw_params_t *hwparams; |
| qreal m_volume; |
| }; |
| |
| class AlsaInputPrivate : public QIODevice |
| { |
| Q_OBJECT |
| public: |
| AlsaInputPrivate(QAlsaAudioInput* audio); |
| ~AlsaInputPrivate(); |
| |
| qint64 readData( char* data, qint64 len); |
| qint64 writeData(const char* data, qint64 len); |
| |
| void trigger(); |
| private: |
| QAlsaAudioInput *audioDevice; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| |
| #endif |