libavcodec/dv.c File Reference

DV codec. More...

#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "dsputil.h"
#include "get_bits.h"
#include "internal.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	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 + 68*2) * 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 dv.c.

---

Function Documentation

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

Definition at line 54 of file 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 426 of file dv.c.

Referenced by dv_encode_video_segment().

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

Definition at line 667 of file dv.c.

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

Definition at line 469 of file dv.c.

Referenced by dv_init_enc_block().

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

Definition at line 598 of file 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 504 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 400 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 406 of file dv.c.

Referenced by dv_guess_qnos(), and dv_init_enc_block().

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

Definition at line 798 of file dv.c.

Referenced by dv_inject_audio(), and dv_inject_metadata().

static av_cold int dvvideo_init_encoder

(

AVCodecContext *

avctx

)

[static]

Definition at line 329 of file dv.c.

int ff_dv_init_dynamic_tables

(

const DVprofile *

d

)

Definition at line 178 of file dv.c.

Referenced by dvvideo_decode_frame().

av_cold int ff_dvvideo_init

(

AVCodecContext *

avctx

)

Definition at line 239 of file dv.c.

Referenced by dvvideo_init_encoder().

static int put_bits_left

(

PutBitContext *

s

)

[inline, static]

Definition at line 352 of file 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 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 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 493 of file dv.c.

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 483 of file dv.c.

const int dv_weight_bits = 18 [static]

Definition at line 482 of file dv.c.

RL_VLC_ELEM ff_dv_rl_vlc[1184]

Definition at line 52 of file dv.c.

Referenced by dv_decode_ac().

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

Definition at line 350 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 349 of file dv.c.

Referenced by dv_encode_video_segment(), and dv_guess_qnos().