Описание класса AudioDataOutput

(Phonon::AudioDataOutput)

The AudioDataOutput class provides access to audio data. Далее...

 #include <Phonon>

Унаследован от: QObject и MediaNode.

Этот класс был введён в Qt 4.7.

Список всех членов, включая унаследованные

Открытые типы

enum	Channel { LeftChannel, RightChannel, CenterChannel, LeftSurroundChannel, RightSurroundChannel, SubwooferChannel }

Свойства

dataSize : int

1 свойство, унаследованное от QObject

Открытые функции

int	dataSize () const
int	sampleRate () const

29 открытых функций, унаследованных от QObject
3 открытые функции, унаследованные от Phonon::MediaNode

Открытые слоты

void	setDataSize ( int size )

1 открытый слот, унаследованный от QObject

Сигналы

void	dataReady ( const QMap<Phonon::AudioDataOutput::Channel, QVector<qint16> > & data )
void	endOfMedia ( int remainingSamples )

1 сигнал, унаследованный от QObject

Дополнительные унаследованные члены

7 статических открытых членов, унаследованных от QObject
8 защищенных функций, унаследованных от QObject

Подробное описание

The AudioDataOutput class provides access to audio data.

This class is used to obtain audio data, typically for the purpose of visualizing it.

Although it is not designed for realtime performance, the latencies associated with accessing the data should be low enough for applications that provide visualizations of the data. This class can also be used to save the audio data for further processing.

Описание типов-членов

enum AudioDataOutput::Channel

This enum describes the channel audio data belongs to.

Константа	Значение
`Phonon::AudioDataOutput::LeftChannel`	`0`
`Phonon::AudioDataOutput::RightChannel`	`1`
`Phonon::AudioDataOutput::CenterChannel`	`2`
`Phonon::AudioDataOutput::LeftSurroundChannel`	`3`
`Phonon::AudioDataOutput::RightSurroundChannel`	`4`
`Phonon::AudioDataOutput::SubwooferChannel`	`5`

Описание свойств

dataSize : int

This property holds the number of samples passed via the dataReady() signal.

Функции доступа:

int	dataSize () const
void	setDataSize ( int size )

Описание функций-членов

void AudioDataOutput::dataReady ( const QMap<Phonon::AudioDataOutput::Channel, QVector<qint16> > & data ) `[signal]`

This signal is emitted whenever there is data available to read. The data sent by the signal is supplied in the form of a map that holds the data for different output channels.

void AudioDataOutput::endOfMedia ( int remainingSamples ) `[signal]`

This signal is emitted before the final dataReady() signal is emitted for a media. The remainingSamples value sent by the signal contains the number of samples that will be sent in the final dataReady() signal for the media.

int AudioDataOutput::sampleRate () const

Returns the sample rate measured in Hertz, as reported by the backend. If the backend is unavailable -1 is returned.

Оглавление