AudioDataOutput Class
(Phonon::AudioDataOutput)The AudioDataOutput class provides access to audio data. More...
Public Types
| enum | Channel { LeftChannel, RightChannel, CenterChannel, LeftSurroundChannel, RightSurroundChannel, SubwooferChannel } |
Properties
- dataSize : int
- 1 property inherited from QObject
Public Functions
| int | dataSize() const |
| int | sampleRate() const |
- 29 public functions inherited from QObject
- 3 public functions inherited from Phonon::MediaNode
Public Slots
| void | setDataSize(int size) |
- 1 public slot inherited from QObject
Signals
| void | dataReady(const QMap<Phonon::AudioDataOutput::Channel, QVector<qint16> > & data) |
| void | endOfMedia(int remainingSamples) |
- 1 signal inherited from QObject
Additional Inherited Members
Detailed Description
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.
Member Type Documentation
enum AudioDataOutput::Channel
This enum describes the channel audio data belongs to.
| Constant | Value |
|---|---|
Phonon::AudioDataOutput::LeftChannel | 0 |
Phonon::AudioDataOutput::RightChannel | 1 |
Phonon::AudioDataOutput::CenterChannel | 2 |
Phonon::AudioDataOutput::LeftSurroundChannel | 3 |
Phonon::AudioDataOutput::RightSurroundChannel | 4 |
Phonon::AudioDataOutput::SubwooferChannel | 5 |
Property Documentation
dataSize : int
This property holds the number of samples passed via the dataReady() signal.
Access functions:
| int | dataSize() const |
| void | setDataSize(int size) |
Member Function Documentation
[signal] void AudioDataOutput::dataReady(const QMap<Phonon::AudioDataOutput::Channel, QVector<qint16> > & data)
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.
[signal] void AudioDataOutput::endOfMedia(int remainingSamples)
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.
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