libavcodec/rv40.c File Reference

RV40 decoder. More...

#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "golomb.h"
#include "rv34.h"
#include "rv40vlc2.h"
#include "rv40data.h"

Go to the source code of this file.

Defines

#define CLIP_SYMM(a, b)   av_clip(a, -(b), b)

#define MASK_CUR   0x0001

#define MASK_RIGHT   0x0008

#define MASK_BOTTOM   0x0010

#define MASK_TOP   0x1000

#define MASK_Y_TOP_ROW   0x000F

#define MASK_Y_LAST_ROW   0xF000

#define MASK_Y_LEFT_COL   0x1111

#define MASK_Y_RIGHT_COL   0x8888

#define MASK_C_TOP_ROW   0x0003

#define MASK_C_LAST_ROW   0x000C

#define MASK_C_LEFT_COL   0x0005

#define MASK_C_RIGHT_COL   0x000A

Enumerations

enum RV40BlockPos { POS_CUR, POS_TOP, POS_LEFT, POS_BOTTOM }

Functions

static av_cold void rv40_init_tables (void)

Initialize all tables.

static int get_dimension (GetBitContext *gb, const int *dim)

Get stored dimension from bitstream.

static void rv40_parse_picture_size (GetBitContext *gb, int *w, int *h)

Get encoded picture size - usually this is called from rv40_parse_slice_header.

static int rv40_parse_slice_header (RV34DecContext *r, GetBitContext *gb, SliceInfo *si)

static int rv40_decode_intra_types (RV34DecContext *r, GetBitContext *gb, int8_t *dst)

Decode 4x4 intra types array.

static int rv40_decode_mb_info (RV34DecContext *r)

Decode macroblock information.

static void rv40_weak_loop_filter (uint8_t *src, const int step, const int filter_p1, const int filter_q1, const int alpha, const int beta, const int lim_p0q0, const int lim_q1, const int lim_p1, const int diff_p1p0, const int diff_q1q0, const int diff_p1p2, const int diff_q1q2)

weaker deblocking very similar to the one described in 4.4.2 of JVT-A003r1

static void rv40_adaptive_loop_filter (uint8_t *src, const int step, const int stride, const int dmode, const int lim_q1, const int lim_p1, const int alpha, const int beta, const int beta2, const int chroma, const int edge)

static void rv40_v_loop_filter (uint8_t *src, int stride, int dmode, int lim_q1, int lim_p1, int alpha, int beta, int beta2, int chroma, int edge)

static void rv40_h_loop_filter (uint8_t *src, int stride, int dmode, int lim_q1, int lim_p1, int alpha, int beta, int beta2, int chroma, int edge)

static void rv40_loop_filter (RV34DecContext *r, int row)

RV40 loop filtering function.

static av_cold int rv40_decode_init (AVCodecContext *avctx)

Initialize decoder.

Variables

static VLC aic_top_vlc

static VLC aic_mode1_vlc [AIC_MODE1_NUM]

static VLC aic_mode2_vlc [AIC_MODE2_NUM]

static VLC ptype_vlc [NUM_PTYPE_VLCS]

static VLC btype_vlc [NUM_BTYPE_VLCS]

static const int neighbour_offs_x [4] = { 0, 0, -1, 0 }

static const int neighbour_offs_y [4] = { 0, -1, 0, 1 }

AVCodec rv40_decoder

Detailed Description

RV40 decoder.

Definition in file rv40.c.

Define Documentation

#define CLIP_SYMM	(	a,
		b		)	av_clip(a, -(b), b)

Definition at line 253 of file rv40.c.

Referenced by rv40_weak_loop_filter().

#define MASK_BOTTOM 0x0010

Definition at line 404 of file rv40.c.

Referenced by rv40_loop_filter().

#define MASK_C_LAST_ROW 0x000C

Definition at line 411 of file rv40.c.

Referenced by rv40_loop_filter().

#define MASK_C_LEFT_COL 0x0005

Definition at line 412 of file rv40.c.

Referenced by rv40_loop_filter().

#define MASK_C_RIGHT_COL 0x000A

Definition at line 413 of file rv40.c.

Referenced by rv40_loop_filter().

#define MASK_C_TOP_ROW 0x0003

Definition at line 410 of file rv40.c.

Referenced by rv40_loop_filter().

#define MASK_CUR 0x0001

Definition at line 402 of file rv40.c.

Referenced by rv40_loop_filter().

#define MASK_RIGHT 0x0008

Definition at line 403 of file rv40.c.

Referenced by rv40_loop_filter().

#define MASK_TOP 0x1000

Definition at line 405 of file rv40.c.

Referenced by rv40_loop_filter().

#define MASK_Y_LAST_ROW 0xF000

Definition at line 407 of file rv40.c.

Referenced by rv40_loop_filter().

#define MASK_Y_LEFT_COL 0x1111

Definition at line 408 of file rv40.c.

Referenced by rv40_loop_filter().

#define MASK_Y_RIGHT_COL 0x8888

Definition at line 409 of file rv40.c.

Referenced by rv40_loop_filter().

#define MASK_Y_TOP_ROW 0x000F

Definition at line 406 of file rv40.c.

Referenced by rv40_loop_filter().

Enumeration Type Documentation

enum RV40BlockPos

Enumerator:

POS_CUR
POS_TOP
POS_LEFT
POS_BOTTOM

Definition at line 395 of file rv40.c.

Function Documentation

static int get_dimension	(	GetBitContext *	gb,
		const int *	dim
	)			`[static]`

Get stored dimension from bitstream.

If the width/height is the standard one then it's coded as a 3-bit index. Otherwise it is coded as escaped 8-bit portions.

Definition at line 80 of file rv40.c.

Referenced by rv40_parse_picture_size().

static void rv40_adaptive_loop_filter	(	uint8_t *	src,
		const int	step,
		const int	stride,
		const int	dmode,
		const int	lim_q1,
		const int	lim_p1,
		const int	alpha,
		const int	beta,
		const int	beta2,
		const int	chroma,
		const int	edge
	)			`[inline, static]`

Definition at line 291 of file rv40.c.

Referenced by rv40_h_loop_filter(), and rv40_v_loop_filter().

static av_cold int rv40_decode_init ( AVCodecContext * avctx ) [static]

Initialize decoder.

Definition at line 633 of file rv40.c.

static int rv40_decode_intra_types	(	RV34DecContext *	r,
		GetBitContext *	gb,
		int8_t *	dst
	)			`[static]`

Decode 4x4 intra types array.

Definition at line 137 of file rv40.c.

Referenced by rv40_decode_init().

static int rv40_decode_mb_info ( RV34DecContext * r ) [static]

Decode macroblock information.

Definition at line 200 of file rv40.c.

Referenced by rv40_decode_init().

static void rv40_h_loop_filter	(	uint8_t *	src,
		int	stride,
		int	dmode,
		int	lim_q1,
		int	lim_p1,
		int	alpha,
		int	beta,
		int	beta2,
		int	chroma,
		int	edge
	)			`[static]`

Definition at line 388 of file rv40.c.

Referenced by rv40_loop_filter().

static av_cold void rv40_init_tables ( void ) [static]

Initialize all tables.

Definition at line 43 of file rv40.c.

Referenced by rv40_decode_init().

static void rv40_loop_filter	(	RV34DecContext *	r,
		int	row
	)			`[static]`

RV40 loop filtering function.

< current macroblock and its neighbours types

flags indicating that macroblock can be filtered with strong filter it is set only for intra coded MB and MB with DCs coded separately

< MB filter clipping value calculated from filtering strength

coded block patterns for luma part of current macroblock and its neighbours Format: LSB corresponds to the top left block, each nibble represents one row of subblocks.

coded block patterns for chroma part of current macroblock and its neighbours Format is the same as for luma with two subblocks in a row.

This mask represents the pattern of luma subblocks that should be filtered in addition to the coded ones because because they lie at the edge of 8x8 block with different enough motion vectors

Definition at line 421 of file rv40.c.

Referenced by rv40_decode_init().

static void rv40_parse_picture_size	(	GetBitContext *	gb,
		int *	w,
		int *	h
	)			`[static]`

Get encoded picture size - usually this is called from rv40_parse_slice_header.

Definition at line 98 of file rv40.c.

Referenced by rv40_parse_slice_header().

static int rv40_parse_slice_header	(	RV34DecContext *	r,
		GetBitContext *	gb,
		SliceInfo *	si
	)			`[static]`

Definition at line 104 of file rv40.c.

Referenced by rv40_decode_init().

static void rv40_v_loop_filter	(	uint8_t *	src,
		int	stride,
		int	dmode,
		int	lim_q1,
		int	lim_p1,
		int	alpha,
		int	beta,
		int	beta2,
		int	chroma,
		int	edge
	)			`[static]`

Definition at line 382 of file rv40.c.

Referenced by rv40_loop_filter().

static void rv40_weak_loop_filter	(	uint8_t *	src,
		const int	step,
		const int	filter_p1,
		const int	filter_q1,
		const int	alpha,
		const int	beta,
		const int	lim_p0q0,
		const int	lim_q1,
		const int	lim_p1,
		const int	diff_p1p0,
		const int	diff_q1q0,
		const int	diff_p1p2,
		const int	diff_q1q2
	)			`[inline, static]`

weaker deblocking very similar to the one described in 4.4.2 of JVT-A003r1

Definition at line 257 of file rv40.c.

Referenced by rv40_adaptive_loop_filter().

Variable Documentation

VLC aic_mode1_vlc[AIC_MODE1_NUM] [static]

Definition at line 37 of file rv40.c.

VLC aic_mode2_vlc[AIC_MODE2_NUM] [static]

Definition at line 37 of file rv40.c.

VLC aic_top_vlc [static]

Definition at line 36 of file rv40.c.

VLC btype_vlc[NUM_BTYPE_VLCS] [static]

Definition at line 38 of file rv40.c.

const int neighbour_offs_x[4] = { 0, 0, -1, 0 } [static]

Definition at line 415 of file rv40.c.

Referenced by rv40_loop_filter().

const int neighbour_offs_y[4] = { 0, -1, 0, 1 } [static]

Definition at line 416 of file rv40.c.

Referenced by rv40_loop_filter().

VLC ptype_vlc[NUM_PTYPE_VLCS] [static]

Definition at line 38 of file rv40.c.

AVCodec rv40_decoder

Initial value:

 {
    "rv40",
    CODEC_TYPE_VIDEO,
    CODEC_ID_RV40,
    sizeof(RV34DecContext),
    rv40_decode_init,
    NULL,
    ff_rv34_decode_end,
    ff_rv34_decode_frame,
    CODEC_CAP_DR1 | CODEC_CAP_DELAY,
    .flush = ff_mpeg_flush,
    .long_name = NULL_IF_CONFIG_SMALL("RealVideo 4.0"),
    .pix_fmts= ff_pixfmt_list_420,
}

Definition at line 650 of file rv40.c.


Defines
#define	CLIP_SYMM(a, b) av_clip(a, -(b), b)
#define	MASK_CUR 0x0001
#define	MASK_RIGHT 0x0008
#define	MASK_BOTTOM 0x0010
#define	MASK_TOP 0x1000
#define	MASK_Y_TOP_ROW 0x000F
#define	MASK_Y_LAST_ROW 0xF000
#define	MASK_Y_LEFT_COL 0x1111
#define	MASK_Y_RIGHT_COL 0x8888
#define	MASK_C_TOP_ROW 0x0003
#define	MASK_C_LAST_ROW 0x000C
#define	MASK_C_LEFT_COL 0x0005
#define	MASK_C_RIGHT_COL 0x000A
Enumerations
enum	RV40BlockPos { POS_CUR, POS_TOP, POS_LEFT, POS_BOTTOM }
Functions
static av_cold void	rv40_init_tables (void)
	Initialize all tables.
static int	get_dimension (GetBitContext gb, const int dim)
	Get stored dimension from bitstream.
static void	rv40_parse_picture_size (GetBitContext gb, int w, int *h)
	Get encoded picture size - usually this is called from rv40_parse_slice_header.
static int	rv40_parse_slice_header (RV34DecContext r, GetBitContext gb, SliceInfo *si)
static int	rv40_decode_intra_types (RV34DecContext r, GetBitContext gb, int8_t *dst)
	Decode 4x4 intra types array.
static int	rv40_decode_mb_info (RV34DecContext *r)
	Decode macroblock information.
static void	rv40_weak_loop_filter (uint8_t *src, const int step, const int filter_p1, const int filter_q1, const int alpha, const int beta, const int lim_p0q0, const int lim_q1, const int lim_p1, const int diff_p1p0, const int diff_q1q0, const int diff_p1p2, const int diff_q1q2)
	weaker deblocking very similar to the one described in 4.4.2 of JVT-A003r1
static void	rv40_adaptive_loop_filter (uint8_t *src, const int step, const int stride, const int dmode, const int lim_q1, const int lim_p1, const int alpha, const int beta, const int beta2, const int chroma, const int edge)
static void	rv40_v_loop_filter (uint8_t *src, int stride, int dmode, int lim_q1, int lim_p1, int alpha, int beta, int beta2, int chroma, int edge)
static void	rv40_h_loop_filter (uint8_t *src, int stride, int dmode, int lim_q1, int lim_p1, int alpha, int beta, int beta2, int chroma, int edge)
static void	rv40_loop_filter (RV34DecContext *r, int row)
	RV40 loop filtering function.
static av_cold int	rv40_decode_init (AVCodecContext *avctx)
	Initialize decoder.
Variables
static VLC	aic_top_vlc
static VLC	aic_mode1_vlc [AIC_MODE1_NUM]
static VLC	aic_mode2_vlc [AIC_MODE2_NUM]
static VLC	ptype_vlc [NUM_PTYPE_VLCS]
static VLC	btype_vlc [NUM_BTYPE_VLCS]
static const int	neighbour_offs_x [4] = { 0, 0, -1, 0 }
static const int	neighbour_offs_y [4] = { 0, -1, 0, 1 }
AVCodec	rv40_decoder