RV40 decoder. More...

#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "golomb.h"
#include "rv34.h"
#include "rv40vlc2.h"
#include "rv40data.h"

Macros
#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. More...

static int	get_dimension (GetBitContext gb, const int dim)
	Get stored dimension from bitstream. More...

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. More...

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. More...

static int	rv40_decode_mb_info (RV34DecContext *r)
	Decode macroblock information. More...

static void	rv40_adaptive_loop_filter (RV34DSPContext rdsp, uint8_t src, int stride, int dmode, int lim_q1, int lim_p1, int alpha, int beta, int beta2, int chroma, int edge, int dir)

static void	rv40_loop_filter (RV34DecContext *r, int row)
	RV40 loop filtering function. More...

static av_cold int	rv40_decode_init (AVCodecContext *avctx)
	Initialize decoder. More...

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 int16_t	mode2_offs []

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

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

AVCodec	ff_rv40_decoder

Detailed Description

RV40 decoder.

Definition in file rv40.c.

Macro Definition Documentation

◆ MASK_CUR

#define MASK_CUR 0x0001

Definition at line 290 of file rv40.c.

Referenced by rv40_loop_filter().

◆ MASK_RIGHT

#define MASK_RIGHT 0x0008

Definition at line 291 of file rv40.c.

Referenced by rv40_loop_filter().

◆ MASK_BOTTOM

#define MASK_BOTTOM 0x0010

Definition at line 292 of file rv40.c.

Referenced by rv40_loop_filter().

◆ MASK_TOP

#define MASK_TOP 0x1000

Definition at line 293 of file rv40.c.

Referenced by rv40_loop_filter().

◆ MASK_Y_TOP_ROW

#define MASK_Y_TOP_ROW 0x000F

Definition at line 294 of file rv40.c.

Referenced by rv40_loop_filter().

◆ MASK_Y_LAST_ROW

#define MASK_Y_LAST_ROW 0xF000

Definition at line 295 of file rv40.c.

Referenced by rv40_loop_filter().

◆ MASK_Y_LEFT_COL

#define MASK_Y_LEFT_COL 0x1111

Definition at line 296 of file rv40.c.

Referenced by rv40_loop_filter().

◆ MASK_Y_RIGHT_COL

#define MASK_Y_RIGHT_COL 0x8888

Definition at line 297 of file rv40.c.

Referenced by rv40_loop_filter().

◆ MASK_C_TOP_ROW

#define MASK_C_TOP_ROW 0x0003

Definition at line 298 of file rv40.c.

Referenced by rv40_loop_filter().

◆ MASK_C_LAST_ROW

#define MASK_C_LAST_ROW 0x000C

Definition at line 299 of file rv40.c.

Referenced by rv40_loop_filter().

◆ MASK_C_LEFT_COL

#define MASK_C_LEFT_COL 0x0005

Definition at line 300 of file rv40.c.

Referenced by rv40_loop_filter().

◆ MASK_C_RIGHT_COL

#define MASK_C_RIGHT_COL 0x000A

Definition at line 301 of file rv40.c.

Referenced by rv40_loop_filter().

Enumeration Type Documentation

◆ RV40BlockPos

enum RV40BlockPos

Enumerator
POS_CUR
POS_TOP
POS_LEFT
POS_BOTTOM

Definition at line 283 of file rv40.c.

Function Documentation

◆ rv40_init_tables()

static av_cold void rv40_init_tables ( void )

static

Initialize all tables.

Definition at line 50 of file rv40.c.

Referenced by rv40_decode_init().

◆ get_dimension()

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 104 of file rv40.c.

Referenced by rv40_parse_picture_size().

◆ rv40_parse_picture_size()

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 124 of file rv40.c.

Referenced by rv40_parse_slice_header().

◆ rv40_parse_slice_header()

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

static

Definition at line 130 of file rv40.c.

Referenced by rv40_decode_init().

◆ rv40_decode_intra_types()

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

static

Decode 4x4 intra types array.

Definition at line 164 of file rv40.c.

Referenced by rv40_decode_init().

◆ rv40_decode_mb_info()

static int rv40_decode_mb_info ( RV34DecContext * r )

static

Decode macroblock information.

Definition at line 227 of file rv40.c.

Referenced by rv40_decode_init().

◆ rv40_adaptive_loop_filter()

static void rv40_adaptive_loop_filter	(	RV34DSPContext *	rdsp,
		uint8_t *	src,
		int	stride,
		int	dmode,
		int	lim_q1,
		int	lim_p1,
		int	alpha,
		int	beta,
		int	beta2,
		int	chroma,
		int	edge,
		int	dir
	)

static

Definition at line 306 of file rv40.c.

Referenced by rv40_loop_filter().

◆ rv40_loop_filter()

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 they lie at the edge of 8x8 block with different enough motion vectors

Definition at line 337 of file rv40.c.

Referenced by rv40_decode_init().

◆ rv40_decode_init()

static av_cold int rv40_decode_init ( AVCodecContext * avctx )

static

Initialize decoder.

Definition at line 551 of file rv40.c.

Variable Documentation

◆ aic_top_vlc

VLC aic_top_vlc

static

Definition at line 38 of file rv40.c.

◆ aic_mode1_vlc

VLC aic_mode1_vlc[AIC_MODE1_NUM]

static

Definition at line 39 of file rv40.c.

◆ aic_mode2_vlc

VLC aic_mode2_vlc[AIC_MODE2_NUM]

static

Definition at line 39 of file rv40.c.

◆ ptype_vlc

VLC ptype_vlc[NUM_PTYPE_VLCS]

static

Definition at line 40 of file rv40.c.

◆ btype_vlc

VLC btype_vlc[NUM_BTYPE_VLCS]

static

Definition at line 40 of file rv40.c.

◆ mode2_offs

const int16_t mode2_offs[]

static

Initial value:

= {
       0,  614, 1222, 1794, 2410,  3014,  3586,  4202,  4792, 5382, 5966, 6542,
    7138, 7716, 8292, 8864, 9444, 10030, 10642, 11212, 11814
}

Definition at line 42 of file rv40.c.

Referenced by rv40_init_tables().

◆ neighbour_offs_x

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

static

Definition at line 303 of file rv40.c.

Referenced by rv40_loop_filter().

◆ neighbour_offs_y

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

static

Definition at line 304 of file rv40.c.

Referenced by rv40_loop_filter().

◆ ff_rv40_decoder

AVCodec ff_rv40_decoder

Initial value:

= {
    .name                  = "rv40",
    .long_name             = NULL_IF_CONFIG_SMALL("RealVideo 4.0"),
    .type                  = AVMEDIA_TYPE_VIDEO,
    .id                    = AV_CODEC_ID_RV40,
    .priv_data_size        = sizeof(RV34DecContext),
    .init                  = rv40_decode_init,
    .close                 = ff_rv34_decode_end,
    .decode                = ff_rv34_decode_frame,
    .capabilities          = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
                             AV_CODEC_CAP_FRAME_THREADS,
    .flush                 = ff_mpeg_flush,
    .pix_fmts              = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_YUV420P,
        AV_PIX_FMT_NONE
    },
    .init_thread_copy      = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_init_thread_copy),
    .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_update_thread_context),
}

Definition at line 570 of file rv40.c.

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ MASK_CUR

◆ MASK_RIGHT

◆ MASK_BOTTOM

◆ MASK_TOP

◆ MASK_Y_TOP_ROW

◆ MASK_Y_LAST_ROW

◆ MASK_Y_LEFT_COL

◆ MASK_Y_RIGHT_COL

◆ MASK_C_TOP_ROW

◆ MASK_C_LAST_ROW

◆ MASK_C_LEFT_COL

◆ MASK_C_RIGHT_COL

Enumeration Type Documentation

◆ RV40BlockPos

Function Documentation

◆ rv40_init_tables()

◆ get_dimension()

◆ rv40_parse_picture_size()

◆ rv40_parse_slice_header()

◆ rv40_decode_intra_types()

◆ rv40_decode_mb_info()

◆ rv40_adaptive_loop_filter()

◆ rv40_loop_filter()

◆ rv40_decode_init()

Variable Documentation

◆ aic_top_vlc

◆ aic_mode1_vlc

◆ aic_mode2_vlc

◆ ptype_vlc

◆ btype_vlc

◆ mode2_offs

◆ neighbour_offs_x

◆ neighbour_offs_y

◆ ff_rv40_decoder