org.apache.tika.parser.mp3

Class AudioFrame

java.lang.Object

org.apache.tika.parser.mp3.AudioFrame

All Implemented Interfaces:

MP3Frame

public class AudioFrame
extends Object
implements MP3Frame

An Audio Frame in an MP3 file. These come after the ID3v2 tags in the file. Currently, only the header is processed, not the raw audio data.

Field Summary

Fields

Modifier and Type	Field and Description
static int	LAYER_1 Constant for audio layer 1.
static int	LAYER_2 Constant for audio layer 2.
static int	LAYER_3 Constant for audio layer 3.
static int	MPEG_V1 Constant for the MPEG version 1.
static int	MPEG_V2 Constant for the MPEG version 2.
static int	MPEG_V2_5 Constant for the MPEG version 2.5.

Constructor Summary

Constructors

Constructor and Description
AudioFrame(InputStream stream, ContentHandler handler) Deprecated. Use the constructor which is passed all values directly.
AudioFrame(int h1, int h2, int h3, int h4, InputStream in) Deprecated. Use the constructor which is passed all values directly.
AudioFrame(int mpegVersion, int layer, int bitRate, int sampleRate, int channels, int length, float duration) Creates a new instance of AudioFrame and initializes all properties.

Method Summary

Modifier and Type	Method and Description
int	getBitRate() Get the bit rate in bit per second.
int	getChannels() Get the number of channels (1=mono, 2=stereo)
float	getDuration() Returns the duration in milliseconds.
int	getLayer() Get the audio layer code.
int	getLength() Returns the frame length in bytes.
int	getSampleRate() Get the sampling rate, in Hz
String	getVersion()
int	getVersionCode() Get the version code.
static boolean	isAudioHeader(int h1, int h2, int h3, int h4) Does this appear to be a 4 byte audio frame header?

Methods inherited from class java.lang.Object

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

Field Detail

MPEG_V1

public static final int MPEG_V1

Constant for the MPEG version 1.

See Also:

Constant Field Values

MPEG_V2

public static final int MPEG_V2

Constant for the MPEG version 2.

See Also:

Constant Field Values

MPEG_V2_5

public static final int MPEG_V2_5

Constant for the MPEG version 2.5.

See Also:

Constant Field Values

LAYER_1

public static final int LAYER_1

Constant for audio layer 1.

See Also:

Constant Field Values

LAYER_2

public static final int LAYER_2

Constant for audio layer 2.

See Also:

Constant Field Values

LAYER_3

public static final int LAYER_3

Constant for audio layer 3.

See Also:

Constant Field Values

Constructor Detail

AudioFrame

@Deprecated
public AudioFrame(InputStream stream,
                              ContentHandler handler)
                       throws IOException,
                              SAXException,
                              TikaException

Deprecated. Use the constructor which is passed all values directly.

Throws:

IOException

SAXException

TikaException

AudioFrame

@Deprecated
public AudioFrame(int h1,
                              int h2,
                              int h3,
                              int h4,
                              InputStream in)
                       throws IOException

Deprecated. Use the constructor which is passed all values directly.

Throws:

IOException

AudioFrame

public AudioFrame(int mpegVersion,
                  int layer,
                  int bitRate,
                  int sampleRate,
                  int channels,
                  int length,
                  float duration)

Creates a new instance of AudioFrame and initializes all properties.

Parameters:

mpegVersion - the code for the MPEG version

layer - the code for the layer

bitRate - the bit rate (in bps)

sampleRate - the sample rate (in samples per second)

channels - the number of channels

length - the frame length (in bytes)

duration - the duration of this frame (in milliseconds)

Method Detail

getVersion

public String getVersion()

getSampleRate

public int getSampleRate()

Get the sampling rate, in Hz

getChannels

public int getChannels()

Get the number of channels (1=mono, 2=stereo)

getVersionCode

public int getVersionCode()

Get the version code.

Returns:

the version code (one of the MPEG constants)

getLayer

public int getLayer()

Get the audio layer code.

Returns:

the audio layer (one of the LAYER constants)

getBitRate

public int getBitRate()

Get the bit rate in bit per second.

Returns:

the bit rate

getLength

public int getLength()

Returns the frame length in bytes.

Returns:

the frame length

getDuration

public float getDuration()

Returns the duration in milliseconds.

Returns:

the duration

isAudioHeader

public static boolean isAudioHeader(int h1,
                                    int h2,
                                    int h3,
                                    int h4)

Does this appear to be a 4 byte audio frame header?