QAudioEncoderSettings Class▲
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Header: QAudioEncoderSettings
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qmake: QT += multimedia
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Group: QAudioEncoderSettings is part of multimedia, multimedia_recording
Detailed Description▲
A audio encoder settings object is used to specify the audio encoder settings used by QMediaRecorder. Audio encoder settings are selected by constructing a QAudioEncoderSettings object, setting the desired properties and then passing it to a QMediaRecorder instance using the QMediaRecorder::setEncodingSettings() function.
QAudioEncoderSettings audioSettings;
audioSettings.setCodec("audio/mpeg");
audioSettings.setChannelCount(2);
recorder->setAudioSettings(audioSettings);See Also▲
See also QMediaRecorder, QAudioEncoderSettingsControl
Member Function Documentation▲
QAudioEncoderSettings::QAudioEncoderSettings()▲
Construct a null audio encoder settings object.
QAudioEncoderSettings::QAudioEncoderSettings(const QAudioEncoderSettings &other)▲
Constructs a copy of the audio encoder settings object other.
QAudioEncoderSettings::~QAudioEncoderSettings()▲
Destroys an audio encoder settings object.
int QAudioEncoderSettings::bitRate() const▲
Returns the bit rate of the compressed audio stream in bits per second.
See Also▲
See also setBitRate()
int QAudioEncoderSettings::channelCount() const▲
QString QAudioEncoderSettings::codec() const▲
QMultimedia::EncodingMode QAudioEncoderSettings::encodingMode() const▲
QVariant QAudioEncoderSettings::encodingOption(const QString &option) const▲
QVariantMap QAudioEncoderSettings::encodingOptions() const▲
Returns the all the encoding options as QVariantMap.
See Also▲
See also encodingOption(), setEncodingOptions()
bool QAudioEncoderSettings::isNull() const▲
Identifies if an audio settings object is initialized.
Returns true if the settings object is null, and false if it is not.
QMultimedia::EncodingQuality QAudioEncoderSettings::quality() const▲
int QAudioEncoderSettings::sampleRate() const▲
void QAudioEncoderSettings::setBitRate(int rate)▲
void QAudioEncoderSettings::setChannelCount(int channels)▲
Sets the number of audio channels.
A value of -1 indicates the encoder should make an optimal choice based on what is available from the audio source and the limitations of the codec.
See Also▲
See also channelCount()
void QAudioEncoderSettings::setCodec(const QString &codec)▲
void QAudioEncoderSettings::setEncodingMode(QMultimedia::EncodingMode mode)▲
Sets the audio encoding mode setting.
If QMultimedia::ConstantQualityEncoding is set, the quality encoding parameter is used and bit rate is ignored, otherwise the bitrate is used.
The audio codec, channels count and sample rate settings are used in all the encoding modes.
See Also▲
See also encodingMode(), QMultimedia::EncodingMode
void QAudioEncoderSettings::setEncodingOption(const QString &option, const QVariant &value)▲
Set the encoding option to value.
The supported set and meaning of encoding options are system and selected codec specific.
See Also▲
See also encodingOption(), setEncodingOptions()
void QAudioEncoderSettings::setEncodingOptions(const QVariantMap &options)▲
Replace all the encoding options with options.
The supported set and meaning of encoding options are system and selected codec specific.
See Also▲
See also encodingOptions(), encodingOption(), setEncodingOption()
void QAudioEncoderSettings::setQuality(QMultimedia::EncodingQuality quality)▲
Set the audio encoding quality.
Setting the audio quality parameter allows backend to choose the balanced set of encoding parameters to achieve the desired quality level.
The quality settings parameter is only used in the constant quality encoding mode.
See Also▲
See also quality()
void QAudioEncoderSettings::setSampleRate(int rate)▲
Sets the audio sample rate in Hz.
A value of -1 indicates the encoder should make an optimal choice based on what is avaialbe from the audio source and the limitations of the codec.
See Also▲
See also sampleRate()
bool QAudioEncoderSettings::operator!=(const QAudioEncoderSettings &other) const▲
Determines if other is of equal value to an audio encoder settings object.
Returns true if the settings objects are not of equal value, and true if they are of equal value.
QAudioEncoderSettings &QAudioEncoderSettings::operator=(const QAudioEncoderSettings &other)▲
Assigns the value of other to an audio encoder settings object.
bool QAudioEncoderSettings::operator==(const QAudioEncoderSettings &other) const▲
Determines if other is of equal value to an audio encoder settings object.
Returns true if the settings objects are of equal value, and false if they are not of equal value.