libavcodec/dv.c File Reference

#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.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	DV_ANCHOR_SIZE   (2*12*27)
#define	TEX_VLC_BITS   9
#define	DV_VLC_MAP_RUN_SIZE   64
#define	DV_VLC_MAP_LEV_SIZE   512
#define	SC(x, y)   ((s[x] - s[y]) ^ ((s[x] - s[y]) >> 7))
Functions
static void	dv_build_unquantize_tables (DVVideoContext *s, uint8_t *perm)
static int	dvvideo_init (AVCodecContext *avctx)
static int	get_bits_left (GetBitContext *s)
static int	get_bits_size (GetBitContext *s)
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_decode_video_segment (DVVideoContext *s, const uint8_t *buf_ptr1, const uint16_t *mb_pos_ptr)
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 void	dv_set_class_number (DCTELEM *blk, EncBlockInfo *bi, const uint8_t *zigzag_scan, const int *weight, int bias)
static av_always_inline int	dv_guess_dct_mode (DCTELEM *blk)
static void	dv_guess_qnos (EncBlockInfo *blks, int *qnos)
static void	dv_encode_video_segment (DVVideoContext *s, uint8_t *dif, const uint16_t *mb_pos_ptr)
static int	dv_decode_mt (AVCodecContext *avctx, void *sl)
static int	dv_write_pack (enum dv_pack_type pack_id, DVVideoContext *c, uint8_t *buf)
static void	dv_format_frame (DVVideoContext *c, uint8_t *buf)
static int	dvvideo_close (AVCodecContext *c)
Variables
static void *	dv_anchor [DV_ANCHOR_SIZE]
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 uint16_t	block_sizes [6]
static const int	vs_total_ac_bits = (100 * 4 + 68*2) * 5
static const int	mb_area_start [5] = { 1, 6, 21, 43, 64 }

---

Define Documentation

#define ALT_BITSTREAM_READER

Definition at line 36 of file dv.c.

#define DV_ANCHOR_SIZE   (2*12*27)

Definition at line 63 of file dv.c.

Referenced by dvvideo_init().

#define DV_VLC_MAP_LEV_SIZE   512

Definition at line 74 of file dv.c.

Referenced by dvvideo_init().

#define DV_VLC_MAP_RUN_SIZE   64

Definition at line 73 of file dv.c.

Referenced by dvvideo_init().

#define SC	(	x,
		y		)	((s[x] - s[y]) ^ ((s[x] - s[y]) >> 7))

Definition at line 737 of file dv.c.

Referenced by dv_guess_dct_mode().

#define TEX_VLC_BITS   9

Definition at line 67 of file dv.c.

Referenced by dv_decode_ac(), dvvideo_init(), ff_msmpeg4_decode_block(), h263_decode_block(), init_2d_vlc_rl(), 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().

---

Function Documentation

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

Definition at line 352 of file dv.c.

Referenced by dv_decode_video_segment().

static void dv_build_unquantize_tables	(	DVVideoContext *	s,
		uint8_t *	perm
	)			[static]

Definition at line 85 of file dv.c.

Referenced by dvvideo_init().

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

Definition at line 285 of file dv.c.

Referenced by dv_decode_video_segment().

static int dv_decode_mt	(	AVCodecContext *	avctx,
		void *	sl
	)			[static]

Definition at line 989 of file dv.c.

static void dv_decode_video_segment	(	DVVideoContext *	s,
		const uint8_t *	buf_ptr1,
		const uint16_t *	mb_pos_ptr
	)			[inline, static]

Definition at line 365 of file dv.c.

Referenced by dv_decode_mt().

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

Definition at line 623 of file dv.c.

Referenced by dv_encode_video_segment().

static void dv_encode_video_segment	(	DVVideoContext *	s,
		uint8_t *	dif,
		const uint16_t *	mb_pos_ptr
	)			[inline, static]

Definition at line 831 of file dv.c.

static void dv_format_frame	(	DVVideoContext *	c,
		uint8_t *	buf
	)			[static]

Definition at line 1144 of file dv.c.

static av_always_inline int dv_guess_dct_mode

(

DCTELEM *

blk

)

[static]

Definition at line 738 of file dv.c.

Referenced by dv_encode_video_segment().

static void dv_guess_qnos	(	EncBlockInfo *	blks,
		int *	qnos
	)			[inline, 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 597 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 603 of file dv.c.

Referenced by dv_guess_qnos(), and dv_set_class_number().

static av_always_inline void dv_set_class_number	(	DCTELEM *	blk,
		EncBlockInfo *	bi,
		const uint8_t *	zigzag_scan,
		const int *	weight,
		int	bias
	)			[static]

Definition at line 666 of file dv.c.

Referenced by dv_encode_video_segment().

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

Definition at line 1072 of file dv.c.

Referenced by dv_format_frame(), dv_inject_audio(), and dv_inject_metadata().

static int dvvideo_close

(

AVCodecContext *

c

)

[static]

Definition at line 1223 of file dv.c.

static int dvvideo_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 110 of file dv.c.

static int get_bits_left

(

GetBitContext *

s

)

[inline, static]

Definition at line 269 of file dv.c.

Referenced by bit_copy(), and dv_decode_video_segment().

static int get_bits_size

(

GetBitContext *

s

)

[inline, static]

Definition at line 274 of file dv.c.

Referenced by dv_decode_ac().

static int put_bits_left

(

PutBitContext *

s

)

[inline, static]

Definition at line 279 of file dv.c.

Referenced by dv_encode_ac().

---

Variable Documentation

const uint16_t block_sizes[6] [static]

Initial value:

 {
    112, 112, 112, 112, 80, 80
}

Definition at line 261 of file dv.c.

Referenced by dv_decode_video_segment(), and dv_encode_video_segment().

void* dv_anchor[DV_ANCHOR_SIZE] [static]

Definition at line 65 of file dv.c.

Referenced by dvvideo_init().

RL_VLC_ELEM dv_rl_vlc[1184] [static]

Definition at line 78 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 267 of file dv.c.

Referenced by dv_guess_qnos(), and dv_set_class_number().

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

Definition at line 265 of file dv.c.

Referenced by dv_encode_video_segment(), and dv_guess_qnos().