Class ALWavePlayer.TALWavePlayer

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Revision as of 23:53, 25 June 2013

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Package: AudioLabEssentialPkg

Unit: ALWavePlayer

Inherits: TALCommonPlayer

Contents 1 Syntax 1.1 Delphi: 1.2 C++ Builder: 1.3 Visual C++ (MFC): 1.4 C# (.NET): 2 Summary 3 Description 4 Properties 4.1 Published 5 Events 6 From TALCommonPlayer 7 Properties 7.1 Published 7.2 Public 8 Methods 8.1 Public 9 Pins 10 Events

Syntax

Delphi:

type TALWavePlayer = class( TALCommonPlayer )

C++ Builder:

class TALWavePlayer : public TALCommonPlayer

Visual C++ (MFC):

class CTALWavePlayer : public CTALCommonPlayer

C# (.NET):

public ref class TALWavePlayer : Mitov.AudioLab.CommonPlayer

Summary

Plays audio from Wave file.

Description

This component can be used to play WAVE files.

To play an WAVE file, place the component on a form, set the FileName with the name of an existing AVI file, set the component Enabled property to True, and connect the OutputPut pin to the InputPin of an TALAudioOut.

Diagram:

Properties

Published

• FileName

Events

• OnCaptionText - Occurs when closed caption text is extracted from the audio.
• OnError - Occurs on wave player error.

From TALCommonPlayer

Properties

Published

• FileName - Name of the file to be Played.
• RestartOnNewFile - Send Stop/Start notification when switching files.
• PumpPriority - Specifies the priority of the component as a pump.
• Enabled - Enables/Disables the player.
• Paused - Pauses or resumes the playback.
• Loop - Replayed again after the end.
• ClockSource - Specifies the clock source - internal or external.
• PlaySegment - A segment of the file to be played.
• BufferSize - Desired size of the audio buffer.

Public

• DurationTime - The total time of the opened file.
• CurrentTime - Current time being played.
• SamplesCount - Returns the total number of audio samples in the file.
• CurrentSample - Current audio sample being played.
• WaveFormat - Returns the current audio format.
• Opened - Indicates if the file is opened.

Methods

Public

• procedure Pump() - Plays one buffer if enabled and ClockSource is csExternal.
• procedure Start() - Starts the playback.
• procedure Stop() - Stops the playback.
• procedure Pause() - Pauses the playback.
• procedure Resume() - Resumes paused playback.
• procedure Open() - Opens the file being for playing.
• procedure Close() - Closes the file being played, and closes any drivers associated with it.

Pins

• OutputPin - The Audio Output Pin of the player.
• ProgressPin - The Play Progress Pin of the player.
• ClockPin - The external clock pin for the player.

Events

• OnProgress - Player progress notification event.
• OnStop - Occurs when the playback stops.