libavcodec/error_resilience.c File Reference

Error resilience / concealment. More...

#include <limits.h>
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "h264.h"
#include "rectangle.h"
#include "thread.h"

Go to the source code of this file.

Defines
#define	MV_FROZEN   3
#define	MV_CHANGED   2
#define	MV_UNCHANGED   1
Functions
static void	decode_mb (MpegEncContext *s, int ref)
static void	set_mv_strides (MpegEncContext *s, int *mv_step, int *stride)
static void	put_dc (MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int mb_x, int mb_y)
	replaces the current MB with a flat dc only version.
static void	filter181 (int16_t *data, int width, int height, int stride)
static void	guess_dc (MpegEncContext *s, int16_t *dc, int w, int h, int stride, int is_luma)
	guess the dc of blocks which do not have an undamaged dc
static void	h_block_filter (MpegEncContext *s, uint8_t *dst, int w, int h, int stride, int is_luma)
	simple horizontal deblocking filter used for error resilience
static void	v_block_filter (MpegEncContext *s, uint8_t *dst, int w, int h, int stride, int is_luma)
	simple vertical deblocking filter used for error resilience
static void	guess_mv (MpegEncContext *s)
static int	is_intra_more_likely (MpegEncContext *s)
void	ff_er_frame_start (MpegEncContext *s)
void	ff_er_add_slice (MpegEncContext *s, int startx, int starty, int endx, int endy, int status)
	adds a slice.
void	ff_er_frame_end (MpegEncContext *s)

---

Detailed Description

Error resilience / concealment.

Definition in file error_resilience.c.

---

Define Documentation

#define MV_CHANGED   2

Referenced by guess_mv().

#define MV_FROZEN   3

Referenced by guess_mv().

#define MV_UNCHANGED   1

Referenced by guess_mv().

---

Function Documentation

static void decode_mb	(	MpegEncContext *	s,
		int	ref
	)			[static]

Definition at line 43 of file error_resilience.c.

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

Definition at line 728 of file error_resilience.c.

Referenced by decode_chunks(), decode_slice(), ff_intrax8_decode_picture(), ff_mpeg4_decode_partitions(), rv10_decode_packet(), rv34_decode_slice(), slice_decode_thread(), vc1_decode_b_blocks(), vc1_decode_i_blocks(), vc1_decode_i_blocks_adv(), vc1_decode_p_blocks(), and vc1_decode_skip_blocks().

void ff_er_frame_end

(

MpegEncContext *

s

)

Definition at line 790 of file error_resilience.c.

Referenced by ff_h263_decode_frame(), ff_rv34_decode_frame(), field_end(), rv10_decode_frame(), rv10_decode_packet(), slice_end(), and vc1_decode_frame().

void ff_er_frame_start

(

MpegEncContext *

s

)

Definition at line 714 of file error_resilience.c.

Referenced by ff_h263_decode_frame(), ff_h264_frame_start(), h261_decode_frame(), mpeg_field_start(), rv10_decode_packet(), rv34_decode_slice(), and vc1_decode_frame().

static void filter181	(	int16_t *	data,
		int	width,
		int	height,
		int	stride
	)			[static]

Definition at line 114 of file error_resilience.c.

Referenced by ff_er_frame_end().

static void guess_dc	(	MpegEncContext *	s,
		int16_t *	dc,
		int	w,
		int	h,
		int	stride,
		int	is_luma
	)			[static]

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

Definition at line 155 of file error_resilience.c.

Referenced by ff_er_frame_end().

static void guess_mv

(

MpegEncContext *

s

)

[static]

Definition at line 360 of file error_resilience.c.

Referenced by ff_er_frame_end().

static void h_block_filter	(	MpegEncContext *	s,
		uint8_t *	dst,
		int	w,
		int	h,
		int	stride,
		int	is_luma
	)			[static]

simple horizontal deblocking filter used for error resilience

Parameters:

	w	width in 8 pixel blocks
	h	height in 8 pixel blocks

Definition at line 239 of file error_resilience.c.

Referenced by ff_er_frame_end().

static int is_intra_more_likely

(

MpegEncContext *

s

)

[static]

Definition at line 648 of file error_resilience.c.

Referenced by ff_er_frame_end().

static void put_dc	(	MpegEncContext *	s,
		uint8_t *	dest_y,
		uint8_t *	dest_cb,
		uint8_t *	dest_cr,
		int	mb_x,
		int	mb_y
	)			[static]

replaces the current MB with a flat dc only version.

Definition at line 85 of file error_resilience.c.

Referenced by ff_er_frame_end().

static void set_mv_strides	(	MpegEncContext *	s,
		int *	mv_step,
		int *	stride
	)			[static]

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

Definition at line 70 of file error_resilience.c.

Referenced by guess_mv(), h_block_filter(), and v_block_filter().

static void v_block_filter	(	MpegEncContext *	s,
		uint8_t *	dst,
		int	w,
		int	h,
		int	stride,
		int	is_luma
	)			[static]

simple vertical deblocking filter used for error resilience

Parameters:

	w	width in 8 pixel blocks
	h	height in 8 pixel blocks

Definition at line 302 of file error_resilience.c.

Referenced by ff_er_frame_end().