The QAbstractAudioInput class provides access for QAudioInput 以访问由插件提供的音频设备。 更多...
| 头： | #include <QAbstractAudioInput> |
| qmake: | QT += multimedia |
| 继承： | QObject |
| virtual int | bufferSize () const = 0 |
| virtual int | bytesReady () const = 0 |
| virtual qint64 | elapsedUSecs () const = 0 |
| virtual QAudio::Error | error () const = 0 |
| virtual QAudioFormat | format () const = 0 |
| virtual int | notifyInterval () const = 0 |
| virtual int | periodSize () const = 0 |
| virtual qint64 | processedUSecs () const = 0 |
| virtual void | reset () = 0 |
| virtual void | resume () = 0 |
| virtual void | setBufferSize (int value ) = 0 |
| virtual void | setFormat (const QAudioFormat & fmt ) = 0 |
| virtual void | setNotifyInterval (int ms ) = 0 |
| virtual void | setVolume ( qreal ) = 0 |
| virtual void | start (QIODevice * device ) = 0 |
| virtual QIODevice * | start () = 0 |
| virtual QAudio::State | state () const = 0 |
| virtual void | stop () = 0 |
| virtual void | suspend () = 0 |
| virtual qreal | volume () const = 0 |
| void | errorChanged (QAudio::Error error ) |
| void | notify () |
| void | stateChanged (QAudio::State state ) |
| const QMetaObject | staticMetaObject |
The QAbstractAudioInput class provides access for QAudioInput 以访问由插件提供的音频设备。
QAudioDeviceInput keeps an instance of QAbstractAudioInput and routes calls to functions of the same name to QAbstractAudioInput . This means that it is QAbstractAudioInput that implements the audio functionality. For a description of the functionality, see the QAudioInput class description.
另请参阅 QAudioInput .
[pure virtual]
int
QAbstractAudioInput::
bufferSize
() const
Returns the audio buffer size in milliseconds.
另请参阅 setBufferSize ().
[pure virtual]
int
QAbstractAudioInput::
bytesReady
() const
Returns the amount of audio data available to read in bytes.
[pure virtual]
qint64
QAbstractAudioInput::
elapsedUSecs
() const
Returns the milliseconds since start () was called, including time in Idle and suspend states.
[pure virtual]
QAudio::Error
QAbstractAudioInput::
error
() const
返回错误状态。
[signal]
void
QAbstractAudioInput::
errorChanged
(
QAudio::Error
error
)
此信号被发射当 error state has changed.
[pure virtual]
QAudioFormat
QAbstractAudioInput::
format
() const
返回 QAudioFormat being used
另请参阅 setFormat ().
[signal]
void
QAbstractAudioInput::
notify
()
This signal is emitted when x ms of audio data has been processed the interval set by setNotifyInterval (x).
[pure virtual]
int
QAbstractAudioInput::
notifyInterval
() const
Returns the notify interval in milliseconds.
另请参阅 setNotifyInterval ().
[pure virtual]
int
QAbstractAudioInput::
periodSize
() const
Returns the period size in bytes.
[pure virtual]
qint64
QAbstractAudioInput::
processedUSecs
() const
Returns the amount of audio data processed since start () was called in milliseconds.
[pure virtual]
void
QAbstractAudioInput::
reset
()
Drops all audio data in the buffers, resets buffers to zero.
[pure virtual]
void
QAbstractAudioInput::
resume
()
Resumes processing audio data after a suspend ().
[pure virtual]
void
QAbstractAudioInput::
setBufferSize
(
int
value
)
Sets the audio buffer size to value in milliseconds.
另请参阅 bufferSize ().
[pure virtual]
void
QAbstractAudioInput::
setFormat
(const
QAudioFormat
&
fmt
)
设置 QAudioFormat to use to fmt . Setting the format is only allowable while in QAudio::StoppedState .
另请参阅 format ().
[pure virtual]
void
QAbstractAudioInput::
setNotifyInterval
(
int
ms
)
Sets the interval for notify () signal to be emitted. This is based on the ms of audio data processed not on actual real-time. The resolution of the timer is platform specific.
另请参阅 notifyInterval ().
[pure virtual]
void
QAbstractAudioInput::
setVolume
(
qreal
)
另请参阅 volume ().
[pure virtual]
void
QAbstractAudioInput::
start
(
QIODevice
*
device
)
使用 device 作为 QIODevice to transfer data.
[pure virtual]
QIODevice
*QAbstractAudioInput::
start
()
返回指针指向 QIODevice being used to handle the data transfer. This QIODevice can be used to read() audio data directly.
[pure virtual]
QAudio::State
QAbstractAudioInput::
state
() const
返回音频处理的状态。
[signal]
void
QAbstractAudioInput::
stateChanged
(
QAudio::State
state
)
此信号被发射当设备 state 已改变。
[pure virtual]
void
QAbstractAudioInput::
stop
()
Stops the audio input.
[pure virtual]
void
QAbstractAudioInput::
suspend
()
Stops processing audio data, preserving buffered audio data.
[pure virtual]
qreal
QAbstractAudioInput::
volume
() const
另请参阅 setVolume ().