org.jcodec.codecs.mpeg12

Class Mpeg2Thumb2x2

java.lang.Object

org.jcodec.common.VideoDecoder

org.jcodec.codecs.mpeg12.MPEGDecoder

org.jcodec.codecs.mpeg12.Mpeg2Thumb2x2

public class Mpeg2Thumb2x2
extends MPEGDecoder

This class is part of JCodec ( www.jcodec.org ) This software is distributed under FreeBSD License MPEG 1/2 Decoder, downscaled 2x2

Author:

The JCodec project

Nested Class Summary

Nested classes/interfaces inherited from class org.jcodec.codecs.mpeg12.MPEGDecoder

MPEGDecoder.Context

Field Summary

Fields

Modifier and Type	Field and Description
static int[]	BLOCK_POS_X
static int[]	BLOCK_POS_Y
static int[][]	scan2x2

Fields inherited from class org.jcodec.codecs.mpeg12.MPEGDecoder

gh, sh

Constructor Summary

Constructors

Constructor and Description
Mpeg2Thumb2x2()

Method Summary

Modifier and Type	Method and Description
protected void	blockInter(BitReader bits, VLC vlcCoeff, int[] block, int[] scan, int escSize, int qScale, int[] qmat)
protected void	blockIntra(BitReader bits, VLC vlcCoeff, int[] block, int[] intra_dc_predictor, int blkIdx, int[] scan, int escSize, int intra_dc_mult, int qScale, int[] qmat)
int	decodeMacroblock(PictureHeader ph, MPEGDecoder.Context context, int prevAddr, int[] qScaleCode, byte[][] buf, int stride, BitReader bits, int vertOff, int vertStep, MPEGPred pred)
protected MPEGDecoder.Context	initContext(SequenceHeader sh, PictureHeader ph)
protected void	mapBlock(int[] block, int[] out, int blkIdx, int dctType, int chromaFormat)
protected void	put(int[][] mbPix, byte[][] buf, int stride, int chromaFormat, int mbX, int mbY, int width, int height, int vertOff, int vertStep)
protected void	putSub(byte[] big, int off, int stride, int[] block, int mbW, int mbH)

Methods inherited from class org.jcodec.codecs.mpeg12.MPEGDecoder

clip, clipTo8Bit, createMpegDecoder, decodeFrame, decodePicture, decodeSlice, getCodecMeta, getCodedHeight, getPictureHeader, getSequenceNumber, mpegSigned, probe, quantInter, quantInterSigned, toSigned, twosSigned

Methods inherited from class org.jcodec.common.VideoDecoder

downscaled, getSameSizeBuffer

Methods inherited from class java.lang.Object

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

Field Detail

BLOCK_POS_X

public static int[] BLOCK_POS_X

BLOCK_POS_Y

public static int[] BLOCK_POS_Y

scan2x2

public static int[][] scan2x2

Constructor Detail

Mpeg2Thumb2x2

public Mpeg2Thumb2x2()

Method Detail

blockIntra

protected void blockIntra(BitReader bits,
                          VLC vlcCoeff,
                          int[] block,
                          int[] intra_dc_predictor,
                          int blkIdx,
                          int[] scan,
                          int escSize,
                          int intra_dc_mult,
                          int qScale,
                          int[] qmat)

Overrides:

blockIntra in class MPEGDecoder

blockInter

protected void blockInter(BitReader bits,
                          VLC vlcCoeff,
                          int[] block,
                          int[] scan,
                          int escSize,
                          int qScale,
                          int[] qmat)

Overrides:

blockInter in class MPEGDecoder

decodeMacroblock

public int decodeMacroblock(PictureHeader ph,
                            MPEGDecoder.Context context,
                            int prevAddr,
                            int[] qScaleCode,
                            byte[][] buf,
                            int stride,
                            BitReader bits,
                            int vertOff,
                            int vertStep,
                            MPEGPred pred)

Overrides:

decodeMacroblock in class MPEGDecoder

mapBlock

protected void mapBlock(int[] block,
                        int[] out,
                        int blkIdx,
                        int dctType,
                        int chromaFormat)

Overrides:

mapBlock in class MPEGDecoder

put

protected void put(int[][] mbPix,
                   byte[][] buf,
                   int stride,
                   int chromaFormat,
                   int mbX,
                   int mbY,
                   int width,
                   int height,
                   int vertOff,
                   int vertStep)

Overrides:

put in class MPEGDecoder

putSub

protected void putSub(byte[] big,
                      int off,
                      int stride,
                      int[] block,
                      int mbW,
                      int mbH)

Overrides:

putSub in class MPEGDecoder

initContext

protected MPEGDecoder.Context initContext(SequenceHeader sh,
                                          PictureHeader ph)

Overrides:

initContext in class MPEGDecoder