de.sciss.jump3r.mp3

Class Encoder

java.lang.Object

de.sciss.jump3r.mp3.Encoder

public class Encoder
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	BLKSIZE FFT sizes
static int	BLKSIZE_s
static int	CBANDS parition bands bands
static int	DECDELAY Most decoders, including the one we use, have a delay of 528 samples.
static int	ENCDELAY ENCDELAY The encoder delay.
static int	FFTOFFSET
static int	HBLKSIZE
static int	HBLKSIZE_s
static int	MDCTDELAY delay of the MDCT used in mdct.c original ISO routines had a delay of 528! Takehiro's routines:
static int	MPG_MD_LR_I
static int	MPG_MD_LR_LR Mode Extention: When we are in stereo mode, there are 4 possible methods to store these two channels.
static int	MPG_MD_MS_I
static int	MPG_MD_MS_LR
static int	NORM_TYPE
static int	POSTDELAY make sure there is at least one complete frame after the last frame containing real data Using a value of 288 would be sufficient for a a very sophisticated decoder that can decode granule-by-granule instead of frame by frame.
static int	PSFB12
static int	PSFB21
PsyModel	psy
static int	SBLIMIT number of subbands
static int	SBMAX_l total number of scalefactor bands encoded
static int	SBMAX_s
static int	SBPSY_l number of critical bands/scale factor bands where masking is computed
static int	SBPSY_s
static int	SHORT_TYPE
static int	START_TYPE
static int	STOP_TYPE

Constructor Summary

Constructors

Constructor and Description
Encoder()

Method Summary

Modifier and Type	Method and Description
int	lame_encode_mp3_frame(LameGlobalFlags gfp, float[] inbuf_l, float[] inbuf_r, byte[] mp3buf, int mp3bufPos, int mp3buf_size)
void	setModules(BitStream bs, PsyModel psy, QuantizePVT qupvt, VBRTag vbr)

Methods inherited from class java.lang.Object

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

Field Detail

psy

public PsyModel psy

ENCDELAY

public static final int ENCDELAY

ENCDELAY The encoder delay. Minimum allowed is MDCTDELAY (see below) The first 96 samples will be attenuated, so using a value less than 96 will result in corrupt data for the first 96-ENCDELAY samples. suggested: 576 set to 1160 to sync with FhG.

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Constant Field Values

POSTDELAY

public static final int POSTDELAY

make sure there is at least one complete frame after the last frame containing real data Using a value of 288 would be sufficient for a a very sophisticated decoder that can decode granule-by-granule instead of frame by frame. But lets not assume this, and assume the decoder will not decode frame N unless it also has data for frame N+1

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Constant Field Values

MDCTDELAY

public static final int MDCTDELAY

delay of the MDCT used in mdct.c original ISO routines had a delay of 528! Takehiro's routines:

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Constant Field Values

FFTOFFSET

public static final int FFTOFFSET

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Constant Field Values

DECDELAY

public static final int DECDELAY

Most decoders, including the one we use, have a delay of 528 samples.

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Constant Field Values

SBLIMIT

public static final int SBLIMIT

number of subbands

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Constant Field Values

CBANDS

public static final int CBANDS

parition bands bands

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Constant Field Values

SBPSY_l

public static final int SBPSY_l

number of critical bands/scale factor bands where masking is computed

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Constant Field Values

SBPSY_s

public static final int SBPSY_s

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Constant Field Values

SBMAX_l

public static final int SBMAX_l

total number of scalefactor bands encoded

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Constant Field Values

SBMAX_s

public static final int SBMAX_s

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PSFB21

public static final int PSFB21

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PSFB12

public static final int PSFB12

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BLKSIZE

public static final int BLKSIZE

FFT sizes

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HBLKSIZE

public static final int HBLKSIZE

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BLKSIZE_s

public static final int BLKSIZE_s

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HBLKSIZE_s

public static final int HBLKSIZE_s

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NORM_TYPE

public static final int NORM_TYPE

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START_TYPE

public static final int START_TYPE

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SHORT_TYPE

public static final int SHORT_TYPE

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Constant Field Values

STOP_TYPE

public static final int STOP_TYPE

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Constant Field Values

MPG_MD_LR_LR

public static final int MPG_MD_LR_LR

 Mode Extention:
 When we are in stereo mode, there are 4 possible methods to store these
 two channels. The stereo modes -m? are using a subset of them.
 
  -ms: MPG_MD_LR_LR
  -mj: MPG_MD_LR_LR and MPG_MD_MS_LR
  -mf: MPG_MD_MS_LR
  -mi: all
 

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Constant Field Values

MPG_MD_LR_I

public static final int MPG_MD_LR_I

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MPG_MD_MS_LR

public static final int MPG_MD_MS_LR

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MPG_MD_MS_I

public static final int MPG_MD_MS_I

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Constructor Detail

Encoder

public Encoder()

Method Detail

setModules

public final void setModules(BitStream bs,
                             PsyModel psy,
                             QuantizePVT qupvt,
                             VBRTag vbr)

lame_encode_mp3_frame

public final int lame_encode_mp3_frame(LameGlobalFlags gfp,
                                       float[] inbuf_l,
                                       float[] inbuf_r,
                                       byte[] mp3buf,
                                       int mp3bufPos,
                                       int mp3buf_size)