QtlMovieAudioTestDialog Class Reference

A subclass of QtlDialog which implements the UI for the "Audio Test" action. More...

Inheritance diagram for QtlMovieAudioTestDialog:

Public Slots
void	startStop ()
	Invoked by the Start/Stop button. More...
void	updateVolume (int value)
	Invoked by the volume slider when it is changed. More...

Public Member Functions
	QtlMovieAudioTestDialog (const QtlMovieInputFile *inputFile, int selectedStream, QtlMovieSettings *settings, QtlLogger *log, QWidget *parent=0)
	Constructor. More...
virtual	~QtlMovieAudioTestDialog ()
	Destructor. More...
Public Member Functions inherited from QtlDialog
	QtlDialog (QWidget *parent=0, Qt::WindowFlags flags=0, QtlGeometrySettingsInterface *geometrySettings=0)
	Constructor. More...
QtlGeometrySettingsInterface *	geometrySettings () const
	Get the object where to save and restore the dialog geometry. More...
void	setGeometrySettings (QtlGeometrySettingsInterface *geometrySettings, bool restoreImmediately=false)
	Set the object where to save and restore the dialog geometry. More...

Private Types
enum	AudioTestState {   Started,   Stopping,   Stopped }
	Define the three states of the audio play. More...

Private Slots
void	audioCompletionCheck ()
	Periodically invoked after the process completion to check if the audio processing is complete. More...
void	audioStateChanged (QAudio::State audioState)
	Invoked by the audio output engine when it changes its state. More...
void	ffmpegDataReady ()
	Invoked when audio data is available from ffmpeg output. More...
void	processCompleted ()
	Invoked when the FFmpeg process terminates. More...
void	updatePlaySlider ()
	Periodically invoked by the audio output engine to update the play slider. More...

Private Member Functions
	QtlMovieAudioTestDialog () Q_DECL_EQ_DELETE
void	cleanup ()
	Perform termination operations when the process and the audio output engine are completed. More...
void	start ()
	Start the audio play. More...
void	stop ()
	Stop the audio play. More...

Private Attributes
QAudioOutput *	_audio
	Audio output device. More...
QAudioFormat	_audioFormat
	Audio format used in the test. More...
QTimer	_endTimer
	A timer used after FFmpeg process completion. More...
const QtlMovieInputFile *	_file
	Input file containing audio streams to test. More...
QtlLogger *	_log
	Message logger. More...
QtlMovieFFmpegProcess *	_process
	FFmpeg process. More...
qint64	_processedUSecs
	Processed audio time at last timer. More...
QtlMovieSettings *	_settings
	Application settings. More...
int	_startSecond
	Starting time of current audio play. More...
AudioTestState	_state
	The state of the audio play. More...
Ui::QtlMovieAudioTestDialog	_ui
	UI from Qt Designer. More...

Additional Inherited Members
Protected Member Functions inherited from QtlDialog
virtual bool	event (QEvent *event) Q_DECL_OVERRIDE
	Process an event. More...

Detailed Description

A subclass of QtlDialog which implements the UI for the "Audio Test" action.

The design of the UI is done using Qt Designer.

Member Enumeration Documentation

AudioTestState

enum QtlMovieAudioTestDialog::AudioTestState

private

Define the three states of the audio play.

Enumerator
Started	Audio play in progress.
Stopping	Audio stop requested ("Stop" button), waiting for processing completion.
Stopped	Audio fully stopped.

Constructor & Destructor Documentation

QtlMovieAudioTestDialog() [1/2]

QtlMovieAudioTestDialog::QtlMovieAudioTestDialog	(	const QtlMovieInputFile *	inputFile,
		int	selectedStream,
		QtlMovieSettings *	settings,
		QtlLogger *	log,
		QWidget *	parent = 0
	)

Constructor.

Parameters

[in]	inputFile	Input file containing audio streams to test.
[in]	selectedStream	Stream index of initially selected stream.
[in]	settings	Application settings.
[in]	log	Message logger.
[in]	parent	Optional parent object.

~QtlMovieAudioTestDialog()

QtlMovieAudioTestDialog::~QtlMovieAudioTestDialog ( )

virtual

Destructor.

QtlMovieAudioTestDialog() [2/2]

QtlMovieAudioTestDialog::QtlMovieAudioTestDialog ( )

private

Member Function Documentation

startStop

void QtlMovieAudioTestDialog::startStop ( )

slot

Invoked by the Start/Stop button.

updateVolume

void QtlMovieAudioTestDialog::updateVolume ( int  value )

slot

Invoked by the volume slider when it is changed.

updatePlaySlider

void QtlMovieAudioTestDialog::updatePlaySlider ( )

privateslot

Periodically invoked by the audio output engine to update the play slider.

audioStateChanged

void QtlMovieAudioTestDialog::audioStateChanged ( QAudio::State  audioState )

privateslot

Invoked by the audio output engine when it changes its state.

Parameters

[in]

audioState

New state of the audio output engine.

ffmpegDataReady

void QtlMovieAudioTestDialog::ffmpegDataReady ( )

privateslot

Invoked when audio data is available from ffmpeg output.

processCompleted

void QtlMovieAudioTestDialog::processCompleted ( )

privateslot

Invoked when the FFmpeg process terminates.

audioCompletionCheck

void QtlMovieAudioTestDialog::audioCompletionCheck ( )

privateslot

Periodically invoked after the process completion to check if the audio processing is complete.

start()

void QtlMovieAudioTestDialog::start ( )

private

Start the audio play.

stop()

void QtlMovieAudioTestDialog::stop ( )

private

Stop the audio play.

cleanup()

void QtlMovieAudioTestDialog::cleanup ( )

private

Perform termination operations when the process and the audio output engine are completed.

Member Data Documentation

_ui

Ui::QtlMovieAudioTestDialog QtlMovieAudioTestDialog::_ui

private

UI from Qt Designer.

_file

const QtlMovieInputFile* QtlMovieAudioTestDialog::_file

private

Input file containing audio streams to test.

_settings

QtlMovieSettings* QtlMovieAudioTestDialog::_settings

private

Application settings.

_log

QtlLogger* QtlMovieAudioTestDialog::_log

private

Message logger.

_process

QtlMovieFFmpegProcess* QtlMovieAudioTestDialog::_process

private

FFmpeg process.

_audioFormat

QAudioFormat QtlMovieAudioTestDialog::_audioFormat

private

Audio format used in the test.

_audio

QAudioOutput* QtlMovieAudioTestDialog::_audio

private

Audio output device.

_endTimer

QTimer QtlMovieAudioTestDialog::_endTimer

private

A timer used after FFmpeg process completion.

_state

AudioTestState QtlMovieAudioTestDialog::_state

private

The state of the audio play.

_startSecond

int QtlMovieAudioTestDialog::_startSecond

private

Starting time of current audio play.

_processedUSecs

qint64 QtlMovieAudioTestDialog::_processedUSecs

private

Processed audio time at last timer.

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The documentation for this class was generated from the following files:

• QtlMovieAudioTestDialog.h
• QtlMovieAudioTestDialog.cpp