VC-1 and WMV3 decoder. More...

#include "internal.h"
#include "avcodec.h"
#include "error_resilience.h"
#include "mpegvideo.h"
#include "h263.h"
#include "h264chroma.h"
#include "vc1.h"
#include "vc1data.h"
#include "vc1acdata.h"
#include "msmpeg4data.h"
#include "unary.h"
#include "mathops.h"
#include "vdpau_internal.h"
#include "libavutil/avassert.h"
#include <assert.h>

Macros
#define	MB_INTRA_VLC_BITS 9

#define	DC_VLC_BITS 9

#define	inc_blk_idx(idx)

#define	transpose(x) ((x >> 3) \| ((x & 7) << 3))

Functions
static void	vc1_put_signed_blocks_clamped (VC1Context *v)

static void	vc1_loop_filter_iblk (VC1Context *v, int pq)

static void	vc1_loop_filter_iblk_delayed (VC1Context *v, int pq)

static void	vc1_smooth_overlap_filter_iblk (VC1Context *v)

static void	vc1_mc_1mv (VC1Context *v, int dir)
	Do motion compensation over 1 macroblock Mostly adapted hpel_motion and qpel_motion from mpegvideo.c.

static int	median4 (int a, int b, int c, int d)

static void	vc1_mc_4mv_luma (VC1Context *v, int n, int dir, int avg)
	Do motion compensation for 4-MV macroblock - luminance block.

static av_always_inline int	get_chroma_mv (int mvx, int mvy, int a, int flag, int tx, int *ty)

static void	vc1_mc_4mv_chroma (VC1Context *v, int dir)
	Do motion compensation for 4-MV macroblock - both chroma blocks.

static void	vc1_mc_4mv_chroma4 (VC1Context *v, int dir, int dir2, int avg)
	Do motion compensation for 4-MV interlaced frame chroma macroblock (both U and V)

static av_always_inline void	vc1_apply_p_v_loop_filter (VC1Context *v, int block_num)

static av_always_inline void	vc1_apply_p_h_loop_filter (VC1Context *v, int block_num)

static void	vc1_apply_p_loop_filter (VC1Context *v)

static int	vc1_decode_p_mb (VC1Context *v)
	Decode one P-frame MB.

static int	vc1_decode_p_mb_intfr (VC1Context *v)

static int	vc1_decode_p_mb_intfi (VC1Context *v)

static void	vc1_decode_b_mb (VC1Context *v)
	Decode one B-frame MB (in Main profile)

static void	vc1_decode_b_mb_intfi (VC1Context *v)
	Decode one B-frame MB (in interlaced field B picture)

static int	vc1_decode_b_mb_intfr (VC1Context *v)
	Decode one B-frame MB (in interlaced frame B picture)

static void	vc1_decode_i_blocks (VC1Context *v)
	Decode blocks of I-frame.

static void	vc1_decode_i_blocks_adv (VC1Context *v)
	Decode blocks of I-frame for advanced profile.

static void	vc1_decode_p_blocks (VC1Context *v)

static void	vc1_decode_b_blocks (VC1Context *v)

static void	vc1_decode_skip_blocks (VC1Context *v)

void	ff_vc1_decode_blocks (VC1Context *v)

av_cold int	ff_vc1_decode_init_alloc_tables (VC1Context *v)

av_cold void	ff_vc1_init_transposed_scantables (VC1Context *v)

static av_cold int	vc1_decode_init (AVCodecContext *avctx)
	Initialize a VC1/WMV3 decoder.

av_cold int	ff_vc1_decode_end (AVCodecContext *avctx)
	Close a VC1/WMV3 decoder.

static int	vc1_decode_frame (AVCodecContext avctx, void data, int got_frame, AVPacket avpkt)
	Decode a VC1/WMV3 frame.

VC-1 Bitplane decoding
See Also 8.7, p56
static void	init_block_index (VC1Context *v)

VC1 Macroblock-level functions in Simple/Main Profiles
See Also 7.1.4, p91 and 8.1.1.7, p(1)04
static int	vc1_coded_block_pred (MpegEncContext s, int n, uint8_t *coded_block_ptr)

static void	vc1_decode_ac_coeff (VC1Context v, int last, int skip, int value, int codingset)
	Decode one AC coefficient.

static int	vc1_decode_i_block (VC1Context *v, int16_t block[64], int n, int coded, int codingset)
	Decode intra block in intra frames - should be faster than decode_intra_block.

static int	vc1_decode_i_block_adv (VC1Context *v, int16_t block[64], int n, int coded, int codingset, int mquant)
	Decode intra block in intra frames - should be faster than decode_intra_block.

static int	vc1_decode_intra_block (VC1Context *v, int16_t block[64], int n, int coded, int mquant, int codingset)
	Decode intra block in inter frames - more generic version than vc1_decode_i_block.

static int	vc1_decode_p_block (VC1Context v, int16_t block[64], int n, int mquant, int ttmb, int first_block, uint8_t dst, int linesize, int skip_block, int *ttmb_out)
	Decode P block.

Variables
static const int	offset_table1 [9] = { 0, 1, 2, 4, 8, 16, 32, 64, 128 }

static const int	offset_table2 [9] = { 0, 1, 3, 7, 15, 31, 63, 127, 255 }

static const int	size_table [6] = { 0, 2, 3, 4, 5, 8 }

static const int	offset_table [6] = { 0, 1, 3, 7, 15, 31 }

static const AVProfile	profiles []

static enum AVPixelFormat	vc1_hwaccel_pixfmt_list_420 []

AVCodec	ff_vc1_decoder

VC-1 Block-level functions
See Also 7.1.4, p91 and 8.1.1.7, p(1)04
#define	GET_MQUANT()
	Get macroblock-level quantizer scale.

#define	GET_MVDATA(_dmv_x, _dmv_y)
	Get MV differentials.

static av_always_inline void	get_mvdata_interlaced (VC1Context v, int dmv_x, int dmv_y, int pred_flag)

static av_always_inline int	scaleforsame_x (VC1Context *v, int n, int dir)

static av_always_inline int	scaleforsame_y (VC1Context *v, int i, int n, int dir)

static av_always_inline int	scaleforopp_x (VC1Context *v, int n)

static av_always_inline int	scaleforopp_y (VC1Context *v, int n, int dir)

static av_always_inline int	scaleforsame (VC1Context *v, int i, int n, int dim, int dir)

static av_always_inline int	scaleforopp (VC1Context *v, int n, int dim, int dir)

static void	vc1_pred_mv (VC1Context v, int n, int dmv_x, int dmv_y, int mv1, int r_x, int r_y, uint8_t is_intra, int pred_flag, int dir)
	Predict and set motion vector.

static void	vc1_pred_mv_intfr (VC1Context v, int n, int dmv_x, int dmv_y, int mvn, int r_x, int r_y, uint8_t is_intra, int dir)
	Predict and set motion vector for interlaced frame picture MBs.

static void	vc1_interp_mc (VC1Context *v)
	Motion compensation for direct or interpolated blocks in B-frames.

static av_always_inline int	scale_mv (int value, int bfrac, int inv, int qs)

static void	vc1_b_mc (VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
	Reconstruct motion vector for B-frame and do motion compensation.

static void	vc1_pred_b_mv (VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype)

static void	vc1_pred_b_mv_intfi (VC1Context v, int n, int dmv_x, int dmv_y, int mv1, int pred_flag)

static int	vc1_i_pred_dc (MpegEncContext s, int overlap, int pq, int n, int16_t dc_val_ptr, int dir_ptr)
	Get predicted DC value for I-frames only prediction dir: left=0, top=1.

static int	vc1_pred_dc (MpegEncContext s, int overlap, int pq, int n, int a_avail, int c_avail, int16_t dc_val_ptr, int dir_ptr)
	Get predicted DC value prediction dir: left=0, top=1.

Detailed Description

VC-1 and WMV3 decoder.

Definition in file vc1dec.c.

Macro Definition Documentation

#define MB_INTRA_VLC_BITS 9

Definition at line 47 of file vc1dec.c.

Referenced by vc1_decode_i_blocks(), and vc1_decode_i_blocks_adv().

#define DC_VLC_BITS 9

Definition at line 48 of file vc1dec.c.

Referenced by vc1_decode_i_block(), vc1_decode_i_block_adv(), and vc1_decode_intra_block().

#define inc_blk_idx ( idx )

Value:

do { \
        idx++; \
        if (idx >= v->n_allocated_blks) \
            idx = 0; \
    } while (0)

Referenced by vc1_put_signed_blocks_clamped().

#define GET_MQUANT ( )

Get macroblock-level quantizer scale.

Definition at line 1092 of file vc1dec.c.

Referenced by vc1_decode_b_mb(), vc1_decode_b_mb_intfi(), vc1_decode_b_mb_intfr(), vc1_decode_i_blocks_adv(), vc1_decode_p_mb(), vc1_decode_p_mb_intfi(), and vc1_decode_p_mb_intfr().

#define GET_MVDATA	(	_dmv_x,
		_dmv_y
	)

Get MV differentials.

See Also: MVDATA decoding from 8.3.5.2, p(1)20

Parameters

_dmv_x	Horizontal differential for decoded MV
_dmv_y	Vertical differential for decoded MV

Definition at line 1134 of file vc1dec.c.

Referenced by vc1_decode_b_mb(), and vc1_decode_p_mb().

#define transpose ( x ) ((x >> 3) | ((x & 7) << 3))

Function Documentation

static void init_block_index ( VC1Context * v )

static

Definition at line 63 of file vc1dec.c.

Referenced by vc1_decode_b_blocks(), vc1_decode_i_blocks(), vc1_decode_i_blocks_adv(), vc1_decode_p_blocks(), and vc1_decode_skip_blocks().

static void vc1_put_signed_blocks_clamped ( VC1Context * v )

static

Definition at line 76 of file vc1dec.c.

Referenced by vc1_decode_i_blocks_adv().

static void vc1_loop_filter_iblk	(	VC1Context *	v,
		int	pq
	)

static

Definition at line 155 of file vc1dec.c.

Referenced by vc1_decode_b_blocks(), and vc1_decode_i_blocks().

static void vc1_loop_filter_iblk_delayed	(	VC1Context *	v,
		int	pq
	)

static

Definition at line 182 of file vc1dec.c.

Referenced by vc1_decode_i_blocks_adv().

static void vc1_smooth_overlap_filter_iblk ( VC1Context * v )

static

Definition at line 250 of file vc1dec.c.

Referenced by vc1_decode_i_blocks_adv().

static void vc1_mc_1mv	(	VC1Context *	v,
		int	dir
	)

static

Do motion compensation over 1 macroblock Mostly adapted hpel_motion and qpel_motion from mpegvideo.c.

Definition at line 330 of file vc1dec.c.

Referenced by vc1_b_mc(), vc1_decode_b_mb_intfr(), vc1_decode_p_mb(), vc1_decode_p_mb_intfi(), and vc1_decode_p_mb_intfr().

static int median4	(	int	a,
		int	b,
		int	c,
		int	d
	)

inlinestatic

Definition at line 538 of file vc1dec.c.

Referenced by get_chroma_mv(), and vc1_mc_4mv_luma().

static void vc1_mc_4mv_luma	(	VC1Context *	v,
		int	n,
		int	dir,
		int	avg
	)

static

Do motion compensation for 4-MV macroblock - luminance block.

Definition at line 551 of file vc1dec.c.

Referenced by vc1_decode_b_mb_intfi(), vc1_decode_b_mb_intfr(), vc1_decode_p_mb(), vc1_decode_p_mb_intfi(), and vc1_decode_p_mb_intfr().

static av_always_inline int get_chroma_mv	(	int *	mvx,
		int *	mvy,
		int *	a,
		int	flag,
		int *	tx,
		int *	ty
	)

static

Definition at line 742 of file vc1dec.c.

Referenced by vc1_mc_4mv_chroma().

static void vc1_mc_4mv_chroma	(	VC1Context *	v,
		int	dir
	)

static

Do motion compensation for 4-MV macroblock - both chroma blocks.

Definition at line 797 of file vc1dec.c.

Referenced by vc1_decode_b_mb_intfi(), vc1_decode_p_mb(), and vc1_decode_p_mb_intfi().

static void vc1_mc_4mv_chroma4	(	VC1Context *	v,
		int	dir,
		int	dir2,
		int	avg
	)

static

Do motion compensation for 4-MV interlaced frame chroma macroblock (both U and V)

Definition at line 969 of file vc1dec.c.

Referenced by vc1_decode_b_mb_intfr(), and vc1_decode_p_mb_intfr().

static av_always_inline void get_mvdata_interlaced	(	VC1Context *	v,
		int *	dmv_x,
		int *	dmv_y,
		int *	pred_flag
	)

static

Definition at line 1172 of file vc1dec.c.

Referenced by vc1_decode_b_mb_intfi(), vc1_decode_b_mb_intfr(), vc1_decode_p_mb_intfi(), and vc1_decode_p_mb_intfr().

static av_always_inline int scaleforsame_x	(	VC1Context *	v,
		int	n,
		int	dir
	)

static

Definition at line 1242 of file vc1dec.c.

Referenced by scaleforsame().

static av_always_inline int scaleforsame_y	(	VC1Context *	v,
		int	i,
		int	n,
		int	dir
	)

static

Definition at line 1275 of file vc1dec.c.

Referenced by scaleforsame().

static av_always_inline int scaleforopp_x	(	VC1Context *	v,
		int	n
	)

static

Definition at line 1312 of file vc1dec.c.

Referenced by scaleforopp().

static av_always_inline int scaleforopp_y	(	VC1Context *	v,
		int	n,
		int	dir
	)

static

Definition at line 1339 of file vc1dec.c.

Referenced by scaleforopp().

static av_always_inline int scaleforsame	(	VC1Context *	v,
		int	i,
		int	n,
		int	dim,
		int	dir
	)

static

Definition at line 1370 of file vc1dec.c.

Referenced by vc1_pred_mv().

static av_always_inline int scaleforopp	(	VC1Context *	v,
		int	n,
		int	dim,
		int	dir
	)

static

Definition at line 1391 of file vc1dec.c.

Referenced by vc1_pred_mv().

static void vc1_pred_mv	(	VC1Context *	v,
		int	n,
		int	dmv_x,
		int	dmv_y,
		int	mv1,
		int	r_x,
		int	r_y,
		uint8_t *	is_intra,
		int	pred_flag,
		int	dir
	)

inlinestatic

Predict and set motion vector.

Definition at line 1417 of file vc1dec.c.

Referenced by vc1_decode_p_mb(), vc1_decode_p_mb_intfi(), and vc1_pred_b_mv_intfi().

static void vc1_pred_mv_intfr	(	VC1Context *	v,
		int	n,
		int	dmv_x,
		int	dmv_y,
		int	mvn,
		int	r_x,
		int	r_y,
		uint8_t *	is_intra,
		int	dir
	)

inlinestatic

Predict and set motion vector for interlaced frame picture MBs.

Definition at line 1671 of file vc1dec.c.

Referenced by vc1_decode_b_mb_intfr(), and vc1_decode_p_mb_intfr().

static void vc1_interp_mc ( VC1Context * v )

static

Motion compensation for direct or interpolated blocks in B-frames.

Definition at line 1897 of file vc1dec.c.

Referenced by vc1_b_mc(), and vc1_decode_b_mb_intfr().

static av_always_inline int scale_mv	(	int	value,
		int	bfrac,
		int	inv,
		int	qs
	)

static

Definition at line 2067 of file vc1dec.c.

Referenced by vc1_decode_b_mb_intfr(), vc1_pred_b_mv(), and vc1_pred_b_mv_intfi().

static void vc1_b_mc	(	VC1Context *	v,
		int	dmv_x[2],
		int	dmv_y[2],
		int	direct,
		int	mode
	)

inlinestatic

Reconstruct motion vector for B-frame and do motion compensation.

Definition at line 2088 of file vc1dec.c.

Referenced by vc1_decode_b_mb(), and vc1_decode_b_mb_intfi().

static void vc1_pred_b_mv	(	VC1Context *	v,
		int	dmv_x[2],
		int	dmv_y[2],
		int	direct,
		int	mvtype
	)

inlinestatic

Definition at line 2105 of file vc1dec.c.

Referenced by vc1_decode_b_mb().

static void vc1_pred_b_mv_intfi	(	VC1Context *	v,
		int	n,
		int *	dmv_x,
		int *	dmv_y,
		int	mv1,
		int *	pred_flag
	)

inlinestatic

Definition at line 2321 of file vc1dec.c.

Referenced by vc1_decode_b_mb_intfi().

static int vc1_i_pred_dc	(	MpegEncContext *	s,
		int	overlap,
		int	pq,
		int	n,
		int16_t **	dc_val_ptr,
		int *	dir_ptr
	)

inlinestatic

Get predicted DC value for I-frames only prediction dir: left=0, top=1.

Parameters

	s	MpegEncContext
	overlap	flag indicating that overlap filtering is used
	pq	integer part of picture quantizer
[in]	n	block index in the current MB
	dc_val_ptr	Pointer to DC predictor
	dir_ptr	Prediction direction for use in AC prediction

Definition at line 2387 of file vc1dec.c.

Referenced by vc1_decode_i_block().

static int vc1_pred_dc	(	MpegEncContext *	s,
		int	overlap,
		int	pq,
		int	n,
		int	a_avail,
		int	c_avail,
		int16_t **	dc_val_ptr,
		int *	dir_ptr
	)

inlinestatic

Get predicted DC value prediction dir: left=0, top=1.

Parameters

	s	MpegEncContext
	overlap	flag indicating that overlap filtering is used
	pq	integer part of picture quantizer
[in]	n	block index in the current MB
	a_avail	flag indicating top block availability
	c_avail	flag indicating left block availability
	dc_val_ptr	Pointer to DC predictor
	dir_ptr	Prediction direction for use in AC prediction

Definition at line 2452 of file vc1dec.c.

Referenced by vc1_decode_i_block_adv(), and vc1_decode_intra_block().

static int vc1_coded_block_pred	(	MpegEncContext *	s,
		int	n,
		uint8_t **	coded_block_ptr
	)

inlinestatic

Definition at line 2529 of file vc1dec.c.

Referenced by vc1_decode_i_blocks(), and vc1_decode_i_blocks_adv().

static void vc1_decode_ac_coeff	(	VC1Context *	v,
		int *	last,
		int *	skip,
		int *	value,
		int	codingset
	)

static

Decode one AC coefficient.

Parameters

v	The VC1 context
last	Last coefficient
skip	How much zero coefficients to skip
value	Decoded AC coefficient value
codingset	set of VLC to decode data

See Also: 8.1.3.4

Definition at line 2565 of file vc1dec.c.

Referenced by vc1_decode_i_block(), vc1_decode_i_block_adv(), vc1_decode_intra_block(), and vc1_decode_p_block().

static int vc1_decode_i_block	(	VC1Context *	v,
		int16_t	block[64],
		int	n,
		int	coded,
		int	codingset
	)

static

Decode intra block in intra frames - should be faster than decode_intra_block.

Parameters

	v	VC1Context
	block	block to decode
[in]	n	subblock index
	coded	are AC coeffs present or not
	codingset	set of VLC to decode data

Definition at line 2631 of file vc1dec.c.

Referenced by vc1_decode_i_blocks().

static int vc1_decode_i_block_adv	(	VC1Context *	v,
		int16_t	block[64],
		int	n,
		int	coded,
		int	codingset,
		int	mquant
	)

static

Decode intra block in intra frames - should be faster than decode_intra_block.

Parameters

	v	VC1Context
	block	block to decode
[in]	n	subblock number
	coded	are AC coeffs present or not
	codingset	set of VLC to decode data
	mquant	quantizer value for this macroblock

Definition at line 2794 of file vc1dec.c.

Referenced by vc1_decode_i_blocks_adv().

static int vc1_decode_intra_block	(	VC1Context *	v,
		int16_t	block[64],
		int	n,
		int	coded,
		int	mquant,
		int	codingset
	)

static

Decode intra block in inter frames - more generic version than vc1_decode_i_block.

Parameters

	v	VC1Context
	block	block to decode
[in]	n	subblock index
	coded	are AC coeffs present or not
	mquant	block quantizer
	codingset	set of VLC to decode data

Definition at line 3006 of file vc1dec.c.

Referenced by vc1_decode_b_mb(), vc1_decode_b_mb_intfi(), vc1_decode_b_mb_intfr(), vc1_decode_p_mb(), vc1_decode_p_mb_intfi(), and vc1_decode_p_mb_intfr().

static int vc1_decode_p_block	(	VC1Context *	v,
		int16_t	block[64],
		int	n,
		int	mquant,
		int	ttmb,
		int	first_block,
		uint8_t *	dst,
		int	linesize,
		int	skip_block,
		int *	ttmb_out
	)

static

Decode P block.

Definition at line 3216 of file vc1dec.c.

Referenced by vc1_decode_b_mb(), vc1_decode_b_mb_intfi(), vc1_decode_b_mb_intfr(), vc1_decode_p_mb(), vc1_decode_p_mb_intfi(), and vc1_decode_p_mb_intfr().

static av_always_inline void vc1_apply_p_v_loop_filter	(	VC1Context *	v,
		int	block_num
	)

static

Definition at line 3378 of file vc1dec.c.

Referenced by vc1_apply_p_loop_filter().

static av_always_inline void vc1_apply_p_h_loop_filter	(	VC1Context *	v,
		int	block_num
	)

static

Definition at line 3442 of file vc1dec.c.

Referenced by vc1_apply_p_loop_filter().

static void vc1_apply_p_loop_filter ( VC1Context * v )

static

Definition at line 3502 of file vc1dec.c.

Referenced by vc1_decode_p_blocks().

static int vc1_decode_p_mb ( VC1Context * v )

static

Decode one P-frame MB.

Definition at line 3529 of file vc1dec.c.

Referenced by vc1_decode_p_blocks().

static int vc1_decode_p_mb_intfr ( VC1Context * v )

static

Definition at line 3768 of file vc1dec.c.

Referenced by vc1_decode_p_blocks().

static int vc1_decode_p_mb_intfi ( VC1Context * v )

static

Definition at line 3979 of file vc1dec.c.

Referenced by vc1_decode_p_blocks().

static void vc1_decode_b_mb ( VC1Context * v )

static

Decode one B-frame MB (in Main profile)

Definition at line 4098 of file vc1dec.c.

Referenced by vc1_decode_b_blocks().

static void vc1_decode_b_mb_intfi ( VC1Context * v )

static

Decode one B-frame MB (in interlaced field B picture)

Definition at line 4250 of file vc1dec.c.

Referenced by vc1_decode_b_blocks().

static int vc1_decode_b_mb_intfr ( VC1Context * v )

static

Decode one B-frame MB (in interlaced frame B picture)

Definition at line 4408 of file vc1dec.c.

Referenced by vc1_decode_b_blocks().

static void vc1_decode_i_blocks ( VC1Context * v )

static

Decode blocks of I-frame.

Definition at line 4754 of file vc1dec.c.

Referenced by ff_vc1_decode_blocks().

static void vc1_decode_i_blocks_adv ( VC1Context * v )

static

Decode blocks of I-frame for advanced profile.

Definition at line 4894 of file vc1dec.c.

Referenced by ff_vc1_decode_blocks().

static void vc1_decode_p_blocks ( VC1Context * v )

static

Definition at line 5028 of file vc1dec.c.

Referenced by ff_vc1_decode_blocks().

static void vc1_decode_b_blocks ( VC1Context * v )

static

Definition at line 5104 of file vc1dec.c.

Referenced by ff_vc1_decode_blocks().

static void vc1_decode_skip_blocks ( VC1Context * v )

static

Definition at line 5167 of file vc1dec.c.

Referenced by ff_vc1_decode_blocks().

void ff_vc1_decode_blocks ( VC1Context * v )

Definition at line 5189 of file vc1dec.c.

Referenced by decode_wmv9(), and vc1_decode_frame().

av_cold int ff_vc1_decode_init_alloc_tables ( VC1Context * v )

Definition at line 5506 of file vc1dec.c.

Referenced by vc1_decode_frame(), vc1_decode_init(), and wmv9_init().

av_cold void ff_vc1_init_transposed_scantables ( VC1Context * v )

Definition at line 5582 of file vc1dec.c.

Referenced by vc1_decode_init(), and wmv9_init().

static av_cold int vc1_decode_init ( AVCodecContext * avctx )

static

Initialize a VC1/WMV3 decoder.

Todo:

TODO: Handle VC-1 IDUs (Transport level?)

TODO: Decypher remaining bits in extra_data

Definition at line 5601 of file vc1dec.c.

av_cold int ff_vc1_decode_end ( AVCodecContext * avctx )

Close a VC1/WMV3 decoder.

Warning: Initial try at using MpegEncContext stuff

Definition at line 5749 of file vc1dec.c.

Referenced by mss2_decode_end(), vc1_decode_frame(), and vc1_decode_init().

static int vc1_decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	got_frame,
		AVPacket *	avpkt
	)

static

Decode a VC1/WMV3 frame.

Todo:: TODO: Handle VC-1 IDUs (Transport level?)

Definition at line 5784 of file vc1dec.c.

Variable Documentation

const int offset_table1[9] = { 0, 1, 2, 4, 8, 16, 32, 64, 128 }

static

Definition at line 52 of file vc1dec.c.

Referenced by get_mvdata_interlaced().

const int offset_table2[9] = { 0, 1, 3, 7, 15, 31, 63, 127, 255 }

static

Definition at line 53 of file vc1dec.c.

Referenced by get_mvdata_interlaced().

const int size_table[6] = { 0, 2, 3, 4, 5, 8 }

static

Definition at line 3375 of file vc1dec.c.

const int offset_table[6] = { 0, 1, 3, 7, 15, 31 }

static

Definition at line 3376 of file vc1dec.c.

const AVProfile profiles[]

static

Initial value:

= {
    { FF_PROFILE_VC1_SIMPLE,   "Simple"   },
    { FF_PROFILE_VC1_MAIN,     "Main"     },
    { FF_PROFILE_VC1_COMPLEX,  "Complex"  },
    { FF_PROFILE_VC1_ADVANCED, "Advanced" },
    { FF_PROFILE_UNKNOWN },
}

Definition at line 6235 of file vc1dec.c.

enum AVPixelFormat vc1_hwaccel_pixfmt_list_420[]

static

Initial value:

= {
    AV_PIX_FMT_YUV420P,
    AV_PIX_FMT_NONE
}

Definition at line 6243 of file vc1dec.c.

AVCodec ff_vc1_decoder

Initial value:

= {
    .name           = "vc1",
    .long_name      = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_VC1,
    .priv_data_size = sizeof(VC1Context),
    .init           = vc1_decode_init,
    .close          = ff_vc1_decode_end,
    .decode         = vc1_decode_frame,
    .flush          = ff_mpeg_flush,
    .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
    .pix_fmts       = vc1_hwaccel_pixfmt_list_420,
    .profiles       = NULL_IF_CONFIG_SMALL(profiles)
}

Definition at line 6257 of file vc1dec.c.

Macros

Functions

Variables

VC-1 Block-level functions

Detailed Description

Macro Definition Documentation

Function Documentation

Variable Documentation