org.jcodec.codecs.h264.decode

Class SliceReader

java.lang.Object

org.jcodec.codecs.h264.decode.SliceReader

public class SliceReader
extends Object

Contains methods for reading high-level symbols out of H.264 bitstream

Author:

The JCodec Project

Constructor Summary

Constructors

Constructor and Description
SliceReader(PictureParameterSet activePps, CABAC cabac, CAVLC[] cavlc, MDecoder mDecoder, BitReader reader, Mapper mapper, SliceHeader sh, NALUnit nalUnit)

Method Summary

Modifier and Type	Method and Description
int	decodeMBTypeI(int mbIdx, boolean leftAvailable, boolean topAvailable, MBType leftMBType, MBType topMBType)
NALUnit	getNALUnit()
SliceHeader	getSliceHeader()
void	readChromaAC(boolean leftAvailable, boolean topAvailable, int mbX, int comp, MBType curMbType, int[] ac, int blkOffLeft, int blkOffTop, int blkX)
void	readChromaDC(int mbX, boolean leftAvailable, boolean topAvailable, int[] dc, int comp, MBType curMbType)
void	readChromaResidual(MBlock mBlock, boolean leftAvailable, boolean topAvailable, int mbX)
protected int	readCodedBlockPatternInter(boolean leftAvailable, boolean topAvailable, int leftCBP, int topCBP, MBType leftMB, MBType topMB)
protected int	readCodedBlockPatternIntra(boolean leftAvailable, boolean topAvailable, int leftCBP, int topCBP, MBType leftMB, MBType topMB)
void	readInter16x16(H264Const.PartPred p0, MBlock mBlock)
void	readInter16x8(H264Const.PartPred p0, H264Const.PartPred p1, MBlock mBlock)
void	readIntra16x16(int mbType, MBlock mBlock)
void	readIntra8x16(H264Const.PartPred p0, H264Const.PartPred p1, MBlock mBlock)
void	readIntraNxN(MBlock mBlock)
int	readLumaAC(boolean leftAvailable, boolean topAvailable, int mbX, MBType curMbType, int blkX, int j, int[] ac16, int blkOffLeft, int blkOffTop)
int	readLumaAC8x8(int blkX, int blkY, int[] ac) Reads luma AC coeffiecients for 8x8 blocks, returns number of non-zero coefficients
boolean	readMacroblock(MBlock mBlock)
void	readMBlock(MBlock mBlock, SliceType sliceType)
void	readMBlock8x8(MBlock mBlock)
void	readMBlockBDirect(MBlock mBlock)
boolean	readMBSkipFlag(SliceType slType, boolean leftAvailable, boolean topAvailable, int mbX)
int	readMBTypeB(int mbIdx, boolean leftAvailable, boolean topAvailable, MBType leftMBType, MBType topMBType)
int	readMBTypeP()
void	readResidualLuma(MBlock mBlock, boolean leftAvailable, boolean topAvailable, int mbX, int mbY)
int	readSubMBTypeB()
int	readSubMBTypeP()
void	savePrevCBP(int codedBlockPattern)
void	setZeroCoeff(int comp, int blkX, int blkOffTop)

Methods inherited from class java.lang.Object

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

Constructor Detail

SliceReader

public SliceReader(PictureParameterSet activePps,
                   CABAC cabac,
                   CAVLC[] cavlc,
                   MDecoder mDecoder,
                   BitReader reader,
                   Mapper mapper,
                   SliceHeader sh,
                   NALUnit nalUnit)

Method Detail

readMacroblock

public boolean readMacroblock(MBlock mBlock)

readCodedBlockPatternIntra

protected int readCodedBlockPatternIntra(boolean leftAvailable,
                                         boolean topAvailable,
                                         int leftCBP,
                                         int topCBP,
                                         MBType leftMB,
                                         MBType topMB)

readCodedBlockPatternInter

protected int readCodedBlockPatternInter(boolean leftAvailable,
                                         boolean topAvailable,
                                         int leftCBP,
                                         int topCBP,
                                         MBType leftMB,
                                         MBType topMB)

setZeroCoeff

public void setZeroCoeff(int comp,
                         int blkX,
                         int blkOffTop)

savePrevCBP

public void savePrevCBP(int codedBlockPattern)

readLumaAC

public int readLumaAC(boolean leftAvailable,
                      boolean topAvailable,
                      int mbX,
                      MBType curMbType,
                      int blkX,
                      int j,
                      int[] ac16,
                      int blkOffLeft,
                      int blkOffTop)

readLumaAC8x8

public int readLumaAC8x8(int blkX,
                         int blkY,
                         int[] ac)

Reads luma AC coeffiecients for 8x8 blocks, returns number of non-zero coefficients

Returns:

readSubMBTypeP

public int readSubMBTypeP()

readSubMBTypeB

public int readSubMBTypeB()

readChromaDC

public void readChromaDC(int mbX,
                         boolean leftAvailable,
                         boolean topAvailable,
                         int[] dc,
                         int comp,
                         MBType curMbType)

readChromaAC

public void readChromaAC(boolean leftAvailable,
                         boolean topAvailable,
                         int mbX,
                         int comp,
                         MBType curMbType,
                         int[] ac,
                         int blkOffLeft,
                         int blkOffTop,
                         int blkX)

decodeMBTypeI

public int decodeMBTypeI(int mbIdx,
                         boolean leftAvailable,
                         boolean topAvailable,
                         MBType leftMBType,
                         MBType topMBType)

readMBTypeP

public int readMBTypeP()

readMBTypeB

public int readMBTypeB(int mbIdx,
                       boolean leftAvailable,
                       boolean topAvailable,
                       MBType leftMBType,
                       MBType topMBType)

readMBSkipFlag

public boolean readMBSkipFlag(SliceType slType,
                              boolean leftAvailable,
                              boolean topAvailable,
                              int mbX)

readIntra16x16

public void readIntra16x16(int mbType,
                           MBlock mBlock)

readMBlockBDirect

public void readMBlockBDirect(MBlock mBlock)

readInter16x16

public void readInter16x16(H264Const.PartPred p0,
                           MBlock mBlock)

readInter16x8

public void readInter16x8(H264Const.PartPred p0,
                          H264Const.PartPred p1,
                          MBlock mBlock)

readIntra8x16

public void readIntra8x16(H264Const.PartPred p0,
                          H264Const.PartPred p1,
                          MBlock mBlock)

readMBlock8x8

public void readMBlock8x8(MBlock mBlock)

readIntraNxN

public void readIntraNxN(MBlock mBlock)

readResidualLuma

public void readResidualLuma(MBlock mBlock,
                             boolean leftAvailable,
                             boolean topAvailable,
                             int mbX,
                             int mbY)

readChromaResidual

public void readChromaResidual(MBlock mBlock,
                               boolean leftAvailable,
                               boolean topAvailable,
                               int mbX)

readMBlock

public void readMBlock(MBlock mBlock,
                       SliceType sliceType)

getSliceHeader

public SliceHeader getSliceHeader()

getNALUnit

public NALUnit getNALUnit()