de.quippy.javamod.multimedia.mp3.id3

Class MPEGAudioFrameHeader

java.lang.Object

de.quippy.javamod.multimedia.mp3.id3.MPEGAudioFrameHeader

public class MPEGAudioFrameHeader
extends Object

Description: This class reads through the file specified and tries to find an mpeg frame. It then reads data from the header of the first frame encountered. Parts of this class will not work correctly on VBR files.

Constructor Summary

Constructors

Constructor and Description
MPEGAudioFrameHeader(RandomAccessInputStream raf) Create an MPEGAudioFrameHeader from the file specified.
MPEGAudioFrameHeader(RandomAccessInputStream raf, int offset) Create an MPEGAudioFrameHeader from the file specified.

Method Summary

Methods

Modifier and Type	Method and Description
int	getBitRate() Returns the bitrate of the mpeg in kbps
String	getChannelMode() Return the channel mode of the mpeg in string form.
String	getEmphasis() Returns the emphasis.
String	getLayer() Return the layer description of the mpeg in string form.
int	getSampleRate() Returns the sample rate of the mpeg in Hz
String	getVersion() Return the version of the mpeg in string form.
boolean	isCopyrighted() Returns true if the audio is copyrighted
boolean	isMP3() Returns true if the file passed to the constructor is an mp3 (MPEG layer III).
boolean	isOriginal() Returns true if this is the original media
boolean	isProtected() Returns true if this mpeg is protected by CRC
String	toString() Return a string representation of this object.

Methods inherited from class java.lang.Object

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

Constructor Detail

MPEGAudioFrameHeader

public MPEGAudioFrameHeader(RandomAccessInputStream raf)
                     throws NoMPEGFramesException,
                            IOException

Create an MPEGAudioFrameHeader from the file specified. Upon creation information will be read in from the first frame header the object encounters in the file.

Parameters:

mp3 - the file to read from

Throws:

NoMPEGFramesException - if the file is not a valid mpeg

FileNotFoundException - if an error occurs

IOException - if an error occurs

MPEGAudioFrameHeader

public MPEGAudioFrameHeader(RandomAccessInputStream raf,
                    int offset)
                     throws NoMPEGFramesException,
                            IOException

Create an MPEGAudioFrameHeader from the file specified. Upon creation information will be read in from the first frame header the object encounters in the file. The offset tells the object where to start searching for an MPEG frame. If you know the size of an id3v2 tag attached to the file and pass it to this ctor, it will take less time to find the frame.

Parameters:

mp3 - the file to read from

offset - the offset to start searching from

Throws:

NoMPEGFramesException - if the file is not a valid mpeg

FileNotFoundException - if an error occurs

IOException - if an error occurs

Method Detail

toString

public String toString()

Return a string representation of this object. Includes all information read in.

Overrides:

toString in class Object

Returns:

a string representation of this object

getVersion

public String getVersion()

Return the version of the mpeg in string form. Ex: MPEG Version 1.0

Returns:

the version of the mpeg

getLayer

public String getLayer()

Return the layer description of the mpeg in string form. Ex: Layer III

Returns:

the layer description of the mpeg

getChannelMode

public String getChannelMode()

Return the channel mode of the mpeg in string form. Ex: Joint Stereo (STEREO)

Returns:

the channel mode of the mpeg

getBitRate

public int getBitRate()

Returns the bitrate of the mpeg in kbps

Returns:

the bitrate of the mpeg in kbps

getSampleRate

public int getSampleRate()

Returns the sample rate of the mpeg in Hz

Returns:

the sample rate of the mpeg in Hz

isCopyrighted

public boolean isCopyrighted()

Returns true if the audio is copyrighted

Returns:

true if the audio is copyrighted

isProtected

public boolean isProtected()

Returns true if this mpeg is protected by CRC

Returns:

true if this mpeg is protected by CRC

isOriginal

public boolean isOriginal()

Returns true if this is the original media

Returns:

true if this is the original media

getEmphasis

public String getEmphasis()

Returns the emphasis. I don't know what this means, it just does it...

Returns:

the emphasis

isMP3

public boolean isMP3()

Returns true if the file passed to the constructor is an mp3 (MPEG layer III).

Returns:

true if the file is an mp3