libavcodec/vc1.h File Reference

#include "avcodec.h"
#include "mpegvideo.h"
#include "intrax8.h"
#include "vc1dsp.h"

Go to the source code of this file.

Data Structures
struct	VC1Context
	The VC1 Context. More...
Defines
#define	AC_VLC_BITS   9
#define	IS_MARKER(x)   (((x) & ~0xFF) == VC1_CODE_RES0)
Enumerations
enum	CodingSet {   CS_HIGH_MOT_INTRA = 0, CS_HIGH_MOT_INTER, CS_LOW_MOT_INTRA, CS_LOW_MOT_INTER,   CS_MID_RATE_INTRA, CS_MID_RATE_INTER, CS_HIGH_RATE_INTRA, CS_HIGH_RATE_INTER }
enum	FrameCodingMode { PROGRESSIVE = 0, ILACE_FRAME, ILACE_FIELD }
	FCM Frame Coding Mode. More...
enum	VC1Code {   VC1_CODE_RES0 = 0x00000100, VC1_CODE_ENDOFSEQ = 0x0000010A, VC1_CODE_SLICE, VC1_CODE_FIELD,   VC1_CODE_FRAME, VC1_CODE_ENTRYPOINT, VC1_CODE_SEQHDR }
	Markers used in VC-1 AP frame data. More...
enum	Profile { PROFILE_SIMPLE, PROFILE_MAIN, PROFILE_COMPLEX, PROFILE_ADVANCED }
	Available Profiles. More...
enum	QuantMode { QUANT_FRAME_IMPLICIT, QUANT_FRAME_EXPLICIT, QUANT_NON_UNIFORM, QUANT_UNIFORM }
	Sequence quantizer mode. More...
enum	DQProfile { DQPROFILE_FOUR_EDGES, DQPROFILE_DOUBLE_EDGES, DQPROFILE_SINGLE_EDGE, DQPROFILE_ALL_MBS }
	Where quant can be changed. More...
Where quant can be changed
enum	DQSingleEdge { DQSINGLE_BEDGE_LEFT, DQSINGLE_BEDGE_TOP, DQSINGLE_BEDGE_RIGHT, DQSINGLE_BEDGE_BOTTOM }
enum	DQDoubleEdge { DQDOUBLE_BEDGE_TOPLEFT, DQDOUBLE_BEDGE_TOPRIGHT, DQDOUBLE_BEDGE_BOTTOMRIGHT, DQDOUBLE_BEDGE_BOTTOMLEFT }
	Which pair of edges is quantized with ALTPQUANT. More...
enum	MVModes {   MV_PMODE_1MV_HPEL_BILIN, MV_PMODE_1MV, MV_PMODE_1MV_HPEL, MV_PMODE_MIXED_MV,   MV_PMODE_INTENSITY_COMP }
	MV modes for P frames. More...
enum	MBModesIntfr {   MV_PMODE_INTFR_1MV, MV_PMODE_INTFR_2MV_FIELD, MV_PMODE_INTFR_2MV, MV_PMODE_INTFR_4MV_FIELD,   MV_PMODE_INTFR_4MV, MV_PMODE_INTFR_INTRA }
	MBMODE for interlaced frame P-picture. More...
MV types for B frames
enum	BMVTypes { BMV_TYPE_BACKWARD, BMV_TYPE_FORWARD, BMV_TYPE_INTERPOLATED, BMV_TYPE_DIRECT }
Block types for P/B frames
enum	TransformTypes {   TT_8X8, TT_8X4_BOTTOM, TT_8X4_TOP, TT_8X4,   TT_4X8_RIGHT, TT_4X8_LEFT, TT_4X8, TT_4X4 }
Overlap conditions for Advanced Profile
enum	COTypes { CONDOVER_NONE = 0, CONDOVER_ALL, CONDOVER_SELECT }
Functions
static av_always_inline const uint8_t *	find_next_marker (const uint8_t *src, const uint8_t *end)
	Find VC-1 marker in buffer.
static av_always_inline int	vc1_unescape_buffer (const uint8_t *src, int size, uint8_t *dst)
int	ff_vc1_decode_sequence_header (AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
	Decode Simple/Main Profiles sequence header.
int	ff_vc1_decode_entry_point (AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
int	ff_vc1_parse_frame_header (VC1Context *v, GetBitContext *gb)
int	ff_vc1_parse_frame_header_adv (VC1Context *v, GetBitContext *gb)
int	ff_vc1_init_common (VC1Context *v)
	Init VC-1 specific tables and VC1Context members.
av_cold int	ff_vc1_decode_init_alloc_tables (VC1Context *v)
av_cold void	ff_vc1_init_transposed_scantables (VC1Context *v)
av_cold int	ff_vc1_decode_end (AVCodecContext *avctx)
	Close a VC1/WMV3 decoder.
void	ff_vc1_decode_blocks (VC1Context *v)

---

Define Documentation

#define AC_VLC_BITS   9

Definition at line 31 of file vc1.h.

#define IS_MARKER

(

x

)

(((x) & ~0xFF) == VC1_CODE_RES0)

Definition at line 46 of file vc1.h.

---

Enumeration Type Documentation

enum BMVTypes

Enumerator:

BMV_TYPE_BACKWARD
BMV_TYPE_FORWARD
BMV_TYPE_INTERPOLATED
BMV_TYPE_DIRECT

Definition at line 124 of file vc1.h.

enum CodingSet

Enumerator:

CS_HIGH_MOT_INTRA
CS_HIGH_MOT_INTER
CS_LOW_MOT_INTRA
CS_LOW_MOT_INTER
CS_MID_RATE_INTRA
CS_MID_RATE_INTER
CS_HIGH_RATE_INTRA
CS_HIGH_RATE_INTER

Definition at line 146 of file vc1.h.

enum COTypes

Enumerator:

CONDOVER_NONE
CONDOVER_ALL
CONDOVER_SELECT

Definition at line 159 of file vc1.h.

enum DQDoubleEdge

Which pair of edges is quantized with ALTPQUANT.

Enumerator:

DQDOUBLE_BEDGE_TOPLEFT
DQDOUBLE_BEDGE_TOPRIGHT
DQDOUBLE_BEDGE_BOTTOMRIGHT
DQDOUBLE_BEDGE_BOTTOMLEFT

Definition at line 91 of file vc1.h.

enum DQProfile

Where quant can be changed.

Enumerator:

DQPROFILE_FOUR_EDGES
DQPROFILE_DOUBLE_EDGES
DQPROFILE_SINGLE_EDGE
DQPROFILE_ALL_MBS

Definition at line 70 of file vc1.h.

enum DQSingleEdge

Enumerator:

DQSINGLE_BEDGE_LEFT
DQSINGLE_BEDGE_TOP
DQSINGLE_BEDGE_RIGHT
DQSINGLE_BEDGE_BOTTOM

Definition at line 81 of file vc1.h.

enum FrameCodingMode

FCM Frame Coding Mode.

Note:

some content might be marked interlaced but have fcm set to 0 as well (e.g. HD-DVD)

Enumerator:

PROGRESSIVE	in the bitstream is reported as 00b
ILACE_FRAME	in the bitstream is reported as 10b
ILACE_FIELD	in the bitstream is reported as 11b

Definition at line 171 of file vc1.h.

enum MBModesIntfr

MBMODE for interlaced frame P-picture.

Enumerator:

MV_PMODE_INTFR_1MV
MV_PMODE_INTFR_2MV_FIELD
MV_PMODE_INTFR_2MV
MV_PMODE_INTFR_4MV_FIELD
MV_PMODE_INTFR_4MV
MV_PMODE_INTFR_INTRA

Definition at line 112 of file vc1.h.

enum MVModes

MV modes for P frames.

Enumerator:

MV_PMODE_1MV_HPEL_BILIN
MV_PMODE_1MV
MV_PMODE_1MV_HPEL
MV_PMODE_MIXED_MV
MV_PMODE_INTENSITY_COMP

Definition at line 101 of file vc1.h.

enum Profile

Available Profiles.

Enumerator:

PROFILE_SIMPLE
PROFILE_MAIN
PROFILE_COMPLEX	TODO: WMV9 specific.
PROFILE_ADVANCED

Definition at line 50 of file vc1.h.

enum QuantMode

Sequence quantizer mode.

Enumerator:

QUANT_FRAME_IMPLICIT	Implicitly specified at frame level.
QUANT_FRAME_EXPLICIT	Explicitly specified at frame level.
QUANT_NON_UNIFORM	Non-uniform quant used for all frames.
QUANT_UNIFORM	Uniform quant used for all frames.

Definition at line 60 of file vc1.h.

enum TransformTypes

Enumerator:

TT_8X8
TT_8X4_BOTTOM
TT_8X4_TOP
TT_8X4
TT_4X8_RIGHT
TT_4X8_LEFT
TT_4X8
TT_4X4

Definition at line 134 of file vc1.h.

enum VC1Code

Markers used in VC-1 AP frame data.

Enumerator:

VC1_CODE_RES0
VC1_CODE_ENDOFSEQ
VC1_CODE_SLICE
VC1_CODE_FIELD
VC1_CODE_FRAME
VC1_CODE_ENTRYPOINT
VC1_CODE_SEQHDR

Definition at line 35 of file vc1.h.

---

Function Documentation

void ff_vc1_decode_blocks

(

VC1Context *

v

)

Definition at line 4740 of file vc1dec.c.

Referenced by decode_wmv9(), and vc1_decode_frame().

av_cold int ff_vc1_decode_end

(

AVCodecContext *

avctx

)

Close a VC1/WMV3 decoder.

Warning:

Initial try at using MpegEncContext stuff

Definition at line 5272 of file vc1dec.c.

Referenced by mss2_decode_end(), and vc1_decode_frame().

int ff_vc1_decode_entry_point	(	AVCodecContext *	avctx,
		VC1Context *	v,
		GetBitContext *	gb
	)

Definition at line 527 of file vc1.c.

Referenced by vc1_decode_frame(), vc1_decode_init(), and vc1_extract_headers().

av_cold int ff_vc1_decode_init_alloc_tables

(

VC1Context *

v

)

Definition at line 5054 of file vc1dec.c.

Referenced by vc1_decode_frame(), and wmv9_init().

int ff_vc1_decode_sequence_header	(	AVCodecContext *	avctx,
		VC1Context *	v,
		GetBitContext *	gb
	)

Decode Simple/Main Profiles sequence header.

See also:

Figure 7-8, p16-17

Parameters:

	avctx	Codec context
	gb	GetBit context initialized from Codec context extra_data

Returns:

Status

Definition at line 294 of file vc1.c.

Referenced by vc1_decode_init(), and vc1_extract_headers().

int ff_vc1_init_common

(

VC1Context *

v

)

Init VC-1 specific tables and VC1Context members.

Parameters:

v

The VC1Context to initialize

Returns:

Status

Definition at line 1535 of file vc1.c.

Referenced by vc1_decode_init(), vc1_parse_init(), and wmv9_init().

av_cold void ff_vc1_init_transposed_scantables

(

VC1Context *

v

)

Definition at line 5120 of file vc1dec.c.

Referenced by vc1_decode_init(), and wmv9_init().

int ff_vc1_parse_frame_header	(	VC1Context *	v,
		GetBitContext *	gb
	)

Definition at line 582 of file vc1.c.

Referenced by decode_wmv9(), vc1_decode_frame(), and vc1_extract_headers().

int ff_vc1_parse_frame_header_adv	(	VC1Context *	v,
		GetBitContext *	gb
	)

Definition at line 832 of file vc1.c.

Referenced by vc1_decode_frame(), and vc1_extract_headers().

static av_always_inline const uint8_t* find_next_marker	(	const uint8_t *	src,
		const uint8_t *	end
	)			[static]

Find VC-1 marker in buffer.

Returns:

position where next marker starts or end of buffer if no marker found

Definition at line 405 of file vc1.h.

Referenced by mov_parse_vc1_frame(), mov_write_dvc1_structs(), vc1_decode_frame(), vc1_decode_init(), and vc1_extract_headers().

static av_always_inline int vc1_unescape_buffer	(	const uint8_t *	src,
		int	size,
		uint8_t *	dst
	)			[static]

Definition at line 419 of file vc1.h.

Referenced by mov_write_dvc1_structs(), vc1_decode_frame(), vc1_decode_init(), and vc1_extract_headers().