Libav: libavcodec/dv.c File Reference

libavcodec

DV codec. More...

#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "dsputil.h"
#include "get_bits.h"
#include "put_bits.h"
#include "simple_idct.h"
#include "dvdata.h"
#include "dv_tablegen.h"

Go to the source code of this file.

Data Structures
struct	DVVideoContext
struct	BlockInfo
struct	EncBlockInfo

Macros
#define	TEX_VLC_BITS 9

Typedefs
typedef struct DVVideoContext	DVVideoContext
typedef struct BlockInfo	BlockInfo
typedef struct EncBlockInfo	EncBlockInfo

Functions
static int	dv_work_pool_size (const DVprofile *d)
static void	dv_calc_mb_coordinates (const DVprofile d, int chan, int seq, int slot, uint16_t tbl)
static int	dv_init_dynamic_tables (const DVprofile *d)
static av_cold int	dvvideo_init (AVCodecContext *avctx)
static av_cold int	dvvideo_init_encoder (AVCodecContext *avctx)
static void	dv_decode_ac (GetBitContext gb, BlockInfo mb, DCTELEM *block)
static void	bit_copy (PutBitContext pb, GetBitContext gb)
static void	dv_calculate_mb_xy (DVVideoContext s, DVwork_chunk work_chunk, int m, int mb_x, int mb_y)
static int	dv_decode_video_segment (AVCodecContext avctx, void arg)
static av_always_inline int	dv_rl2vlc (int run, int l, int sign, uint32_t *vlc)
static av_always_inline int	dv_rl2vlc_size (int run, int l)
static av_always_inline PutBitContext *	dv_encode_ac (EncBlockInfo bi, PutBitContext pb_pool, PutBitContext *pb_end)
static av_always_inline int	dv_guess_dct_mode (DVVideoContext s, uint8_t data, int linesize)
static av_always_inline int	dv_init_enc_block (EncBlockInfo bi, uint8_t data, int linesize, DVVideoContext *s, int bias)
static void	dv_guess_qnos (EncBlockInfo blks, int qnos)
static int	dv_encode_video_segment (AVCodecContext avctx, void arg)
static int	dv_write_pack (enum dv_pack_type pack_id, DVVideoContext c, uint8_t buf)
static int	dvvideo_close (AVCodecContext *c)

Variables
static RL_VLC_ELEM	dv_rl_vlc [1184]
static const int	vs_total_ac_bits = (100 * 4 + 682) 5
static const int	mb_area_start [5] = { 1, 6, 21, 43, 64 }

Detailed Description

DV codec.

Definition in file dv.c.

Macro Definition Documentation

#define TEX_VLC_BITS 9

Definition at line 67 of file dv.c.

Referenced by decode_block_intra(), dv_decode_ac(), dvvideo_init(), h263_decode_block(), mdec_decode_block_intra(), mpeg1_decode_block_inter(), mpeg1_decode_block_intra(), mpeg1_fast_decode_block_inter(), mpeg2_decode_block_intra(), mpeg2_decode_block_non_intra(), mpeg2_fast_decode_block_intra(), mpeg2_fast_decode_block_non_intra(), and mpeg4_decode_block().

Typedef Documentation

typedef struct BlockInfo BlockInfo

typedef struct DVVideoContext DVVideoContext

typedef struct EncBlockInfo EncBlockInfo

Function Documentation

static void bit_copy	(	PutBitContext *	pb,
		GetBitContext *	gb
	)

inlinestatic

Definition at line 433 of file dv.c.

Referenced by dv_decode_video_segment().

static void dv_calc_mb_coordinates	(	const DVprofile *	d,
		int	chan,
		int	seq,
		int	slot,
		uint16_t *	tbl
	)

inlinestatic

Definition at line 82 of file dv.c.

Referenced by dv_init_dynamic_tables().

static void dv_calculate_mb_xy	(	DVVideoContext *	s,
		DVwork_chunk *	work_chunk,
		int	m,
		int *	mb_x,
		int *	mb_y
	)

inlinestatic

Definition at line 445 of file dv.c.

Referenced by dv_decode_video_segment(), and dv_encode_video_segment().

static void dv_decode_ac	(	GetBitContext *	gb,
		BlockInfo *	mb,
		DCTELEM *	block
	)

static

Definition at line 376 of file dv.c.

Referenced by dv_decode_video_segment().

static int dv_decode_video_segment	(	AVCodecContext *	avctx,
		void *	arg
	)

static

Definition at line 457 of file dv.c.

static av_always_inline PutBitContext* dv_encode_ac	(	EncBlockInfo *	bi,
		PutBitContext *	pb_pool,
		PutBitContext *	pb_end
	)

static

Definition at line 706 of file dv.c.

Referenced by dv_encode_video_segment().

static int dv_encode_video_segment	(	AVCodecContext *	avctx,
		void *	arg
	)

static

Definition at line 925 of file dv.c.

static av_always_inline int dv_guess_dct_mode	(	DVVideoContext *	s,
		uint8_t *	data,
		int	linesize
	)

static

Definition at line 749 of file dv.c.

Referenced by dv_init_enc_block().

static void dv_guess_qnos	(	EncBlockInfo *	blks,
		int *	qnos
	)

inlinestatic

Definition at line 856 of file dv.c.

Referenced by dv_encode_video_segment().

static int dv_init_dynamic_tables ( const DVprofile * d )

static

Definition at line 197 of file dv.c.

static av_always_inline int dv_init_enc_block	(	EncBlockInfo *	bi,
		uint8_t *	data,
		int	linesize,
		DVVideoContext *	s,
		int	bias
	)

static

Definition at line 762 of file dv.c.

Referenced by dv_encode_video_segment().

static av_always_inline int dv_rl2vlc	(	int	run,
		int	l,
		int	sign,
		uint32_t *	vlc
	)

static

Definition at line 680 of file dv.c.

Referenced by dv_encode_ac().

static av_always_inline int dv_rl2vlc_size	(	int	run,
		int	l
	)

static

Definition at line 686 of file dv.c.

Referenced by dv_guess_qnos(), and dv_init_enc_block().

static int dv_work_pool_size ( const DVprofile * d )

inlinestatic

Definition at line 72 of file dv.c.

Referenced by dv_init_dynamic_tables().

static int dv_write_pack	(	enum dv_pack_type	pack_id,
		DVVideoContext *	c,
		uint8_t *	buf
	)

inlinestatic

Definition at line 1114 of file dv.c.

static int dvvideo_close ( AVCodecContext * c )

static

Definition at line 1263 of file dv.c.

static av_cold int dvvideo_init ( AVCodecContext * avctx )

static

Definition at line 258 of file dv.c.

Referenced by dvvideo_init_encoder().

static av_cold int dvvideo_init_encoder ( AVCodecContext * avctx )

static

Definition at line 350 of file dv.c.

Variable Documentation

RL_VLC_ELEM dv_rl_vlc[1184]

static

Definition at line 70 of file dv.c.

const int mb_area_start[5] = { 1, 6, 21, 43, 64 }

static

Definition at line 373 of file dv.c.

Referenced by dv_guess_qnos(), and dv_init_enc_block().

const int vs_total_ac_bits = (100 * 4 + 68*2) * 5

static

Definition at line 372 of file dv.c.

Referenced by dv_encode_video_segment(), and dv_guess_qnos().