libavcodec/dv.c File Reference

DV codec. More...

#include "avcodec.h"
#include "dsputil.h"
#include "bitstream.h"
#include "simple_idct.h"
#include "dvdata.h"

Go to the source code of this file.

Data Structures
struct	DVVideoContext
struct	dv_vlc_pair
struct	BlockInfo
struct	EncBlockInfo
Defines
#define	ALT_BITSTREAM_READER
#define	TEX_VLC_BITS   9
#define	DV_VLC_MAP_RUN_SIZE   64
#define	DV_VLC_MAP_LEV_SIZE   512
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 int	put_bits_left (PutBitContext *s)
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 struct dv_vlc_pair	dv_vlc_map [DV_VLC_MAP_RUN_SIZE][DV_VLC_MAP_LEV_SIZE]
static const int	vs_total_ac_bits = (100 * 4 + 68*2) * 5
static const int	mb_area_start [5] = { 1, 6, 21, 43, 64 }

---

Detailed Description

DV codec.

Definition in file dv.c.

---

Define Documentation

#define ALT_BITSTREAM_READER

Definition at line 40 of file dv.c.

#define DV_VLC_MAP_LEV_SIZE   512

Definition at line 71 of file dv.c.

Referenced by dvvideo_init().

#define DV_VLC_MAP_RUN_SIZE   64

Definition at line 70 of file dv.c.

Referenced by dvvideo_init().

#define TEX_VLC_BITS   9

Definition at line 64 of file dv.c.

Referenced by dv_decode_ac(), dvvideo_init(), ff_mpeg1_decode_block_intra(), ff_msmpeg4_decode_block(), h263_decode_block(), mdec_decode_block_intra(), mpeg1_decode_block_inter(), 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().

---

Function Documentation

static void bit_copy	(	PutBitContext *	pb,
		GetBitContext *	gb
	)			[inline, static]

Definition at line 484 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
	)			[inline, static]

Definition at line 92 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
	)			[inline, static]

Definition at line 496 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 423 of file dv.c.

Referenced by dv_decode_video_segment().

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

Definition at line 508 of file dv.c.

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

Definition at line 763 of file dv.c.

Referenced by dv_encode_video_segment().

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

Definition at line 982 of file dv.c.

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

Definition at line 806 of file dv.c.

Referenced by dv_init_enc_block().

static void dv_guess_qnos	(	EncBlockInfo *	blks,
		int *	qnos
	)			[inline, static]

Definition at line 913 of file dv.c.

Referenced by dv_encode_video_segment().

static int dv_init_dynamic_tables

(

const DVprofile *

d

)

[static]

Definition at line 207 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 819 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 737 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 743 of file dv.c.

Referenced by dv_guess_qnos(), and dv_init_enc_block().

static int dv_work_pool_size

(

const DVprofile *

d

)

[inline, static]

Definition at line 82 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
	)			[inline, static]

Definition at line 1148 of file dv.c.

Referenced by dv_inject_audio(), and dv_inject_metadata().

static int dvvideo_close

(

AVCodecContext *

c

)

[static]

Definition at line 1297 of file dv.c.

static av_cold int dvvideo_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 268 of file dv.c.

static int put_bits_left

(

PutBitContext *

s

)

[inline, static]

Definition at line 417 of file dv.c.

Referenced by dv_encode_ac().

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Variable Documentation

RL_VLC_ELEM dv_rl_vlc[1184] [static]

Definition at line 75 of file dv.c.

struct dv_vlc_pair dv_vlc_map[DV_VLC_MAP_RUN_SIZE][DV_VLC_MAP_LEV_SIZE] [static]

Referenced by dv_rl2vlc(), dv_rl2vlc_size(), and dvvideo_init().

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

Definition at line 415 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 413 of file dv.c.

Referenced by dv_encode_video_segment(), and dv_guess_qnos().