DV codec. More...

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

Include dependency graph for libavcodec/dv.c:

Go to the source code of this file.

Data Structures
struct	EncBlockInfo

Typedefs
typedef struct EncBlockInfo	EncBlockInfo

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

int	ff_dv_init_dynamic_tables (const DVprofile *d)

av_cold int	ff_dvvideo_init (AVCodecContext *avctx)

static av_cold int	dvvideo_init_encoder (AVCodecContext *avctx)

static int	put_bits_left (PutBitContext *s)

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)

Variables
RL_VLC_ELEM	ff_dv_rl_vlc [1184]

static const uint8_t	dv100_qstep [16]

static const uint8_t	dv_quant_areas [4] = { 6, 21, 43, 64 }

static const int	vs_total_ac_bits = (100 * 4 + 682) 5

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

static const int	dv_weight_bits = 18

static const int	dv_weight_88 [64]

static const int	dv_weight_248 [64]

Detailed Description

DV codec.

Definition in file libavcodec/dv.c.

Typedef Documentation

typedef struct EncBlockInfo EncBlockInfo

Function Documentation

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

inlinestatic

Definition at line 54 of file libavcodec/dv.c.

Referenced by ff_dv_init_dynamic_tables().

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

static

Definition at line 428 of file libavcodec/dv.c.

Referenced by dv_encode_video_segment().

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

static

Definition at line 669 of file libavcodec/dv.c.

Referenced by dv_write_pack().

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

static

Definition at line 471 of file libavcodec/dv.c.

Referenced by dv_init_enc_block().

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

inlinestatic

Definition at line 600 of file libavcodec/dv.c.

Referenced by dv_encode_video_segment().

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

static

Definition at line 506 of file libavcodec/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 402 of file libavcodec/dv.c.

Referenced by dv_encode_ac(), and put_bits_left().

static av_always_inline int dv_rl2vlc_size	(	int	run,
		int	l
	)

static

Definition at line 408 of file libavcodec/dv.c.

Referenced by dv_guess_qnos(), dv_init_enc_block(), and put_bits_left().

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

inlinestatic

Definition at line 800 of file libavcodec/dv.c.

static av_cold int dvvideo_init_encoder ( AVCodecContext * avctx )

static

Definition at line 331 of file libavcodec/dv.c.

Referenced by dv_write_pack().

int ff_dv_init_dynamic_tables ( const DVprofile * d )

Definition at line 178 of file libavcodec/dv.c.

Referenced by dv_write_pack(), and dvvideo_decode_frame().

av_cold int ff_dvvideo_init ( AVCodecContext * avctx )

Definition at line 239 of file libavcodec/dv.c.

Referenced by dvvideo_init_encoder().

static int put_bits_left ( PutBitContext * s )

inlinestatic

Definition at line 354 of file libavcodec/dv.c.

Referenced by dv_encode_ac().

Variable Documentation

const uint8_t dv100_qstep[16]

static

Initial value:

= {
    1, 
    1,
    2, 3, 4, 5, 6, 7, 8, 16, 18, 20, 22, 24, 28, 52
}

Definition at line 170 of file libavcodec/dv.c.

Referenced by ff_dv_init_dynamic_tables().

const uint8_t dv_quant_areas[4] = { 6, 21, 43, 64 }

static

Definition at line 176 of file libavcodec/dv.c.

Referenced by ff_dv_init_dynamic_tables().

const int dv_weight_248[64]

static

Initial value:

= {
 131072, 242189, 257107, 237536, 229376, 200636, 242189, 223754,
 224969, 196781, 262144, 242189, 229376, 200636, 257107, 237536,
 211916, 185364, 235923, 217965, 229376, 211916, 206433, 180568,
 242189, 223754, 224969, 196781, 211916, 185364, 235923, 217965,
 200704, 175557, 222935, 205965, 200636, 185364, 195068, 170627,
 229376, 211916, 206433, 180568, 200704, 175557, 222935, 205965,
 175557, 153560, 188995, 174609, 165371, 144651, 200636, 185364,
 195068, 170627, 175557, 153560, 188995, 174609, 165371, 144651,
}

Definition at line 495 of file libavcodec/dv.c.

Referenced by dv_init_enc_block().

const int dv_weight_88[64]

static

Initial value:

= {
 131072, 257107, 257107, 242189, 252167, 242189, 235923, 237536,
 237536, 235923, 229376, 231390, 223754, 231390, 229376, 222935,
 224969, 217965, 217965, 224969, 222935, 200636, 218652, 211916,
 212325, 211916, 218652, 200636, 188995, 196781, 205965, 206433,
 206433, 205965, 196781, 188995, 185364, 185364, 200636, 200704,
 200636, 185364, 185364, 174609, 180568, 195068, 195068, 180568,
 174609, 170091, 175557, 189591, 175557, 170091, 165371, 170627,
 170627, 165371, 160727, 153560, 160727, 144651, 144651, 136258,
}

Definition at line 485 of file libavcodec/dv.c.

Referenced by dv_init_enc_block().

const int dv_weight_bits = 18

static

Definition at line 484 of file libavcodec/dv.c.

Referenced by dv_init_enc_block().

RL_VLC_ELEM ff_dv_rl_vlc[1184]

Definition at line 52 of file libavcodec/dv.c.

Referenced by dv_decode_ac().

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

static

Definition at line 352 of file libavcodec/dv.c.