Header

java.lang.Object
- rehost.javazoom.jl.decoder.Header

```
public final class Header
extends java.lang.Object
```
Class for extracting information from a frame header.

Field Summary

Fields
Modifier and Type	Field and Description
`static java.lang.String[][][]`	`bitrate_str`
`static int[][][]`	`bitrates`
`short`	`checksum`
`static int`	`DUAL_CHANNEL`
`static int`	`FOURTYEIGHT`
`static int`	`FOURTYFOUR_POINT_ONE`
`int`	`framesize`
`static int[][]`	`frequencies`
`static int`	`JOINT_STEREO`
`static int`	`MPEG1` Constant for MPEG-1 version
`static int`	`MPEG2_LSF` Constant for MPEG-2 LSF version
`static int`	`MPEG25_LSF`
`int`	`nSlots`
`static int`	`SINGLE_CHANNEL`
`static int`	`STEREO`
`static int`	`THIRTYTWO`

Method Summary

Methods
Modifier and Type	Method and Description
`int`	`bitrate_index()` Returns bitrate index.
`int`	`bitrate_instant()` Return Instant Bitrate.
`java.lang.String`	`bitrate_string()` Return Bitrate.
`int`	`bitrate()` Return Bitrate.
`int`	`calculate_framesize()` Calculate Frame size.
`boolean`	`checksum_ok()` Returns Checksum flag.
`boolean`	`checksums()` Returns Protection bit.
`boolean`	`copyright()` Returns Copyright.
`int`	`frequency()` Returns Frequency.
`int`	`getSyncHeader()` Returns synchronized header.
`int`	`intensity_stereo_bound()` Returns Intensity Stereo.
`java.lang.String`	`layer_string()` Return Layer version.
`int`	`layer()` Returns Layer ID.
`int`	`max_number_of_frames(int streamsize)` Returns the maximum number of frames in the stream.
`int`	`min_number_of_frames(int streamsize)` Returns the maximum number of frames in the stream.
`int`	`mode_extension()` Returns Mode Extension.
`java.lang.String`	`mode_string()` Returns Mode.
`int`	`mode()` Returns Mode.
`float`	`ms_per_frame()` Returns ms/frame.
`int`	`number_of_subbands()` Returns the number of subbands in the current frame.
`boolean`	`original()` Returns Original.
`boolean`	`padding()` Returns Layer III Padding bit.
`java.lang.String`	`sample_frequency_string()` Returns Frequency
`int`	`sample_frequency()` Returns Sample Frequency.
`int`	`slots()` Returns Slots.
`java.lang.String`	`toString()`
`float`	`total_ms(int streamsize)` Returns total ms.
`int`	`vbr_scale()` Return VBR scale.
`byte[]`	`vbr_toc()` Return VBR TOC.
`boolean`	`vbr()` Return VBR.
`java.lang.String`	`version_string()` Returns Version.
`int`	`version()` Returns version.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - frequencies
```
public static final int[][] frequencies
```
  - MPEG2_LSF
```
public static final int MPEG2_LSF
```
    Constant for MPEG-2 LSF version
    
    See Also:
    Constant Field Values
  - MPEG25_LSF
```
public static final int MPEG25_LSF
```
    See Also:
    Constant Field Values
  - MPEG1
```
public static final int MPEG1
```
    Constant for MPEG-1 version
    
    See Also:
    Constant Field Values
  - STEREO
```
public static final int STEREO
```
    See Also:
    Constant Field Values
  - JOINT_STEREO
```
public static final int JOINT_STEREO
```
    See Also:
    Constant Field Values
  - DUAL_CHANNEL
```
public static final int DUAL_CHANNEL
```
    See Also:
    Constant Field Values
  - SINGLE_CHANNEL
```
public static final int SINGLE_CHANNEL
```
    See Also:
    Constant Field Values
  - FOURTYFOUR_POINT_ONE
```
public static final int FOURTYFOUR_POINT_ONE
```
    See Also:
    Constant Field Values
  - FOURTYEIGHT
```
public static final int FOURTYEIGHT
```
    See Also:
    Constant Field Values
  - THIRTYTWO
```
public static final int THIRTYTWO
```
    See Also:
    Constant Field Values
  - checksum
```
public short checksum
```
  - framesize
```
public int framesize
```
  - nSlots
```
public int nSlots
```
  - bitrates
```
public static final int[][][] bitrates
```
  - bitrate_str
```
public static final java.lang.String[][][] bitrate_str
```
- Method Detail
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - version
```
public int version()
```
    Returns version.
  - layer
```
public int layer()
```
    Returns Layer ID.
  - bitrate_index
```
public int bitrate_index()
```
    Returns bitrate index.
  - sample_frequency
```
public int sample_frequency()
```
    Returns Sample Frequency.
  - frequency
```
public int frequency()
```
    Returns Frequency.
  - mode
```
public int mode()
```
    Returns Mode.
  - checksums
```
public boolean checksums()
```
    Returns Protection bit.
  - copyright
```
public boolean copyright()
```
    Returns Copyright.
  - original
```
public boolean original()
```
    Returns Original.
  - vbr
```
public boolean vbr()
```
    Return VBR.
    
    Returns:
    true if VBR header is found
  - vbr_scale
```
public int vbr_scale()
```
    Return VBR scale.
    
    Returns:
    scale of -1 if not available
  - vbr_toc
```
public byte[] vbr_toc()
```
    Return VBR TOC.
    
    Returns:
    vbr toc ot null if not available
  - checksum_ok
```
public boolean checksum_ok()
```
    Returns Checksum flag. Compares computed checksum with stream checksum.
  - padding
```
public boolean padding()
```
    Returns Layer III Padding bit.
  - slots
```
public int slots()
```
    Returns Slots.
  - mode_extension
```
public int mode_extension()
```
    Returns Mode Extension.
  - calculate_framesize
```
public int calculate_framesize()
```
    Calculate Frame size. Calculates framesize in bytes excluding header size.
  - max_number_of_frames
```
public int max_number_of_frames(int streamsize)
```
    Returns the maximum number of frames in the stream.
    
    Parameters:
    streamsize -
    
    Returns:
    number of frames
  - min_number_of_frames
```
public int min_number_of_frames(int streamsize)
```
    Returns the maximum number of frames in the stream.
    
    Parameters:
    streamsize -
    
    Returns:
    number of frames
  - ms_per_frame
```
public float ms_per_frame()
```
    Returns ms/frame.
    
    Returns:
    milliseconds per frame
  - total_ms
```
public float total_ms(int streamsize)
```
    Returns total ms.
    
    Parameters:
    streamsize -
    
    Returns:
    total milliseconds
  - getSyncHeader
```
public int getSyncHeader()
```
    Returns synchronized header.
  - layer_string
```
public java.lang.String layer_string()
```
    Return Layer version.
  - bitrate_string
```
public java.lang.String bitrate_string()
```
    Return Bitrate.
    
    Returns:
    bitrate in bps
  - bitrate
```
public int bitrate()
```
    Return Bitrate.
    
    Returns:
    bitrate in bps and average bitrate for VBR header
  - bitrate_instant
```
public int bitrate_instant()
```
    Return Instant Bitrate. Bitrate for VBR is not constant.
    
    Returns:
    bitrate in bps
  - sample_frequency_string
```
public java.lang.String sample_frequency_string()
```
    Returns Frequency
    
    Returns:
    frequency string in kHz
  - mode_string
```
public java.lang.String mode_string()
```
    Returns Mode.
  - version_string
```
public java.lang.String version_string()
```
    Returns Version.
    
    Returns:
    MPEG-1 or MPEG-2 LSF or MPEG-2.5 LSF
  - number_of_subbands
```
public int number_of_subbands()
```
    Returns the number of subbands in the current frame.
    
    Returns:
    number of subbands
  - intensity_stereo_bound
```
public int intensity_stereo_bound()
```
    Returns Intensity Stereo. (Layer II joint stereo only). Returns the number of subbands which are in stereo mode, subbands above that limit are in intensity stereo mode.
    
    Returns:
    intensity

Class Header

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

frequencies

MPEG2_LSF

MPEG25_LSF

MPEG1

STEREO

JOINT_STEREO

DUAL_CHANNEL

SINGLE_CHANNEL

FOURTYFOUR_POINT_ONE

FOURTYEIGHT

THIRTYTWO

checksum

framesize

nSlots

bitrates

bitrate_str

Method Detail

toString

version

layer

bitrate_index

sample_frequency

frequency

mode

checksums

copyright

original

vbr

vbr_scale

vbr_toc

checksum_ok

padding

slots

mode_extension

calculate_framesize

max_number_of_frames

min_number_of_frames

ms_per_frame

total_ms

getSyncHeader

layer_string

bitrate_string

bitrate

bitrate_instant

sample_frequency_string

mode_string

version_string

number_of_subbands

intensity_stereo_bound