com.twilight.h264.decoder
Class ErrorResilience

java.lang.Object
  com.twilight.h264.decoder.ErrorResilience

public class ErrorResilience
extends Object

Field Summary

static int[]	dc_val
static int[]	dc_val_base
static int	error_concealment
static int	FF_EC_DEBLOCK
static int	FF_EC_GUESS_MVS
static int[][][]	mv
static int	MV_CHANGED
static int	MV_FROZEN
static int	MV_TYPE_16X16
static int	MV_TYPE_16X8
static int	MV_TYPE_8X8
static int	MV_TYPE_DMV
static int	MV_TYPE_FIELD
static int	MV_UNCHANGED
static int	skip_bottom
static int	skip_top

Constructor Summary

ErrorResilience()

Method Summary

static void	decode_mb(MpegEncContext s, int ref)
static void	ff_er_add_slice(MpegEncContext s, int startx, int starty, int endx, int endy, int status) adds a slice.
static void	ff_er_frame_end(MpegEncContext s)
static void	ff_er_frame_start(MpegEncContext s)
static void	filter181(int[] data_base, int data_offset, int width, int height, int stride)
static void	guess_dc(MpegEncContext s, int[] dc_base, int dc_offset, int w, int h, int stride, int is_luma) guess the dc of blocks which do not have an undamaged dc
static void	guess_mv(MpegEncContext s)
static void	h_block_filter(MpegEncContext s, int[] dst_base, int dst_offset, int w, int h, int stride, int is_luma) simple horizontal deblocking filter used for error resilience
static int	is_intra_more_likely(MpegEncContext s)
static int	pix_abs16_c(Object v, int[] pix1_base, int pix1_offset, int[] pix2_base, int pix2_offset, int line_size, int h)
static void	put_dc(MpegEncContext s, int[] dest_y_base, int dest_y_offset, int[] dest_cb_base, int dest_cb_offset, int[] dest_cr_base, int dest_cr_offset, int mb_x, int mb_y) replaces the current MB with a flat dc only version.
static void	set_mv_strides(MpegEncContext s, int[] inout)
static void	v_block_filter(MpegEncContext s, int[] dst_base, int dst_offset, int w, int h, int stride, int is_luma) simple vertical deblocking filter used for error resilience

Methods inherited from class java.lang.Object

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

Field Detail

MV_FROZEN

public static final int MV_FROZEN

See Also:

Constant Field Values

MV_CHANGED

public static final int MV_CHANGED

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Constant Field Values

MV_UNCHANGED

public static final int MV_UNCHANGED

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Constant Field Values

MV_TYPE_16X16

public static final int MV_TYPE_16X16

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Constant Field Values

MV_TYPE_8X8

public static final int MV_TYPE_8X8

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Constant Field Values

MV_TYPE_16X8

public static final int MV_TYPE_16X8

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Constant Field Values

MV_TYPE_FIELD

public static final int MV_TYPE_FIELD

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Constant Field Values

MV_TYPE_DMV

public static final int MV_TYPE_DMV

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Constant Field Values

FF_EC_GUESS_MVS

public static final int FF_EC_GUESS_MVS

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Constant Field Values

FF_EC_DEBLOCK

public static final int FF_EC_DEBLOCK

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Constant Field Values

error_concealment

public static int error_concealment

dc_val_base

public static int[] dc_val_base

dc_val

public static int[] dc_val

mv

public static int[][][] mv

skip_top

public static int skip_top

skip_bottom

public static int skip_bottom

Constructor Detail

ErrorResilience

public ErrorResilience()

Method Detail

decode_mb

public static void decode_mb(MpegEncContext s,
                             int ref)

set_mv_strides

public static void set_mv_strides(MpegEncContext s,
                                  int[] inout)

Parameters:

stride - the number of MVs to get to the next row

mv_step - the number of MVs per row or column in a macroblock

put_dc

public static void put_dc(MpegEncContext s,
                          int[] dest_y_base,
                          int dest_y_offset,
                          int[] dest_cb_base,
                          int dest_cb_offset,
                          int[] dest_cr_base,
                          int dest_cr_offset,
                          int mb_x,
                          int mb_y)

replaces the current MB with a flat dc only version.

filter181

public static void filter181(int[] data_base,
                             int data_offset,
                             int width,
                             int height,
                             int stride)

guess_dc

public static void guess_dc(MpegEncContext s,
                            int[] dc_base,
                            int dc_offset,
                            int w,
                            int h,
                            int stride,
                            int is_luma)

guess the dc of blocks which do not have an undamaged dc

Parameters:

w - width in 8 pixel blocks

h - height in 8 pixel blocks

h_block_filter

public static void h_block_filter(MpegEncContext s,
                                  int[] dst_base,
                                  int dst_offset,
                                  int w,
                                  int h,
                                  int stride,
                                  int is_luma)

simple horizontal deblocking filter used for error resilience

Parameters:

w - width in 8 pixel blocks

h - height in 8 pixel blocks

v_block_filter

public static void v_block_filter(MpegEncContext s,
                                  int[] dst_base,
                                  int dst_offset,
                                  int w,
                                  int h,
                                  int stride,
                                  int is_luma)

simple vertical deblocking filter used for error resilience

Parameters:

w - width in 8 pixel blocks

h - height in 8 pixel blocks

guess_mv

public static void guess_mv(MpegEncContext s)

pix_abs16_c

public static int pix_abs16_c(Object v,
                              int[] pix1_base,
                              int pix1_offset,
                              int[] pix2_base,
                              int pix2_offset,
                              int line_size,
                              int h)

is_intra_more_likely

public static int is_intra_more_likely(MpegEncContext s)

ff_er_frame_start

public static void ff_er_frame_start(MpegEncContext s)

ff_er_add_slice

public static void ff_er_add_slice(MpegEncContext s,
                                   int startx,
                                   int starty,
                                   int endx,
                                   int endy,
                                   int status)

adds a slice.

Parameters:

endx - x component of the last macroblock, can be -1 for the last of the previous line

status - the status at the end (MV_END, AC_ERROR, ...), it is assumed that no earlier end or error of the same type occurred

ff_er_frame_end

public static void ff_er_frame_end(MpegEncContext s)