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AudioFileFormat (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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javax.sound.sampled
Class AudioFileFormat

java.lang.Object
  |
  +--javax.sound.sampled.AudioFileFormat

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public class AudioFileFormat

extends Object

An instance of the AudioFileFormat class describes an audio file, including the file type, the file's length in bytes, the length in sample frames of the audio data contained in the file, and the format of the audio data.

The AudioSystem class includes methods for determining the format of an audio file, obtaining an audio input stream from an audio file, and writing an audio file from an audio input stream.

Since:

1.3

See Also:

AudioInputStream

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Nested Class Summary
static class	AudioFileFormat.Type           An instance of the Type class represents one of the standard types of audio file.

 

Constructor Summary
	AudioFileFormat(AudioFileFormat.Type type, AudioFormat format, int frameLength)           Constructs an audio file format object.
protected	AudioFileFormat(AudioFileFormat.Type type, int byteLength, AudioFormat format, int frameLength)           Constructs an audio file format object.

 

Method Summary
int	getByteLength()           Obtains the size in bytes of the entire audio file (not just its audio data).
AudioFormat	getFormat()           Obtains the format of the audio data contained in the audio file.
int	getFrameLength()           Obtains the length of the audio data contained in the file, expressed in sample frames.
AudioFileFormat.Type	getType()           Obtains the audio file type, such as WAVE or AU.
String	toString()           Provides a string representation of the file format.

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Constructor Detail

AudioFileFormat

protected AudioFileFormat(AudioFileFormat.Type type,
                          int byteLength,
                          AudioFormat format,
                          int frameLength)

Constructs an audio file format object. This protected constructor is intended for use by providers of file-reading services when returning information about an audio file or about supported audio file formats.

Parameters:

type - the type of the audio file

byteLength - the length of the file in bytes, or AudioSystem.NOT_SPECIFIED

format - the format of the audio data contained in the file

frameLength - the audio data length in sample frames, or AudioSystem.NOT_SPECIFIED

See Also:

getType()

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AudioFileFormat

public AudioFileFormat(AudioFileFormat.Type type,
                       AudioFormat format,
                       int frameLength)

Constructs an audio file format object. This public constructor may be used by applications to describe the properties of a requested audio file.

Parameters:

type - the type of the audio file

format - the format of the audio data contained in the file

frameLength - the audio data length in sample frames, or AudioSystem.NOT_SPECIFIED

Method Detail

getType

public AudioFileFormat.Type getType()

Obtains the audio file type, such as WAVE or AU.

Returns:

the audio file type

See Also:

AudioFileFormat.Type.WAVE, AudioFileFormat.Type.AU, AudioFileFormat.Type.AIFF, AudioFileFormat.Type.AIFC, AudioFileFormat.Type.SND

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getByteLength

public int getByteLength()

Obtains the size in bytes of the entire audio file (not just its audio data).

Returns:

the audio file length in bytes

See Also:

AudioSystem.NOT_SPECIFIED

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getFormat

public AudioFormat getFormat()

Obtains the format of the audio data contained in the audio file.

Returns:

the audio data format

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getFrameLength

public int getFrameLength()

Obtains the length of the audio data contained in the file, expressed in sample frames.

Returns:

the number of sample frames of audio data in the file

See Also:

AudioSystem.NOT_SPECIFIED

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toString

public String toString()

Provides a string representation of the file format.

Overrides:

toString in class Object

Returns:

the file format as a string

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.