libavcodec/golomb.h File Reference

exp golomb vlc stuff More...

#include <stdint.h>
#include "get_bits.h"
#include "put_bits.h"

Go to the source code of this file.

Defines
#define	INVALID_VLC   0x80000000
Functions
static int	get_ue_golomb (GetBitContext *gb)
	read unsigned exp golomb code.
static unsigned	get_ue_golomb_long (GetBitContext *gb)
	Read an unsigned Exp-Golomb code in the range 0 to UINT32_MAX-1.
static int	get_ue_golomb_31 (GetBitContext *gb)
	read unsigned exp golomb code, constraint to a max of 31.
static int	svq3_get_ue_golomb (GetBitContext *gb)
static int	get_te0_golomb (GetBitContext *gb, int range)
	read unsigned truncated exp golomb code.
static int	get_te_golomb (GetBitContext *gb, int range)
	read unsigned truncated exp golomb code.
static int	get_se_golomb (GetBitContext *gb)
	read signed exp golomb code.
static int	svq3_get_se_golomb (GetBitContext *gb)
static int	dirac_get_se_golomb (GetBitContext *gb)
static int	get_ur_golomb (GetBitContext *gb, int k, int limit, int esc_len)
	read unsigned golomb rice code (ffv1).
static int	get_ur_golomb_jpegls (GetBitContext *gb, int k, int limit, int esc_len)
	read unsigned golomb rice code (jpegls).
static int	get_sr_golomb (GetBitContext *gb, int k, int limit, int esc_len)
	read signed golomb rice code (ffv1).
static int	get_sr_golomb_flac (GetBitContext *gb, int k, int limit, int esc_len)
	read signed golomb rice code (flac).
static unsigned int	get_ur_golomb_shorten (GetBitContext *gb, int k)
	read unsigned golomb rice code (shorten).
static int	get_sr_golomb_shorten (GetBitContext *gb, int k)
	read signed golomb rice code (shorten).
static void	set_ue_golomb (PutBitContext *pb, int i)
	write unsigned exp golomb code.
static void	set_te_golomb (PutBitContext *pb, int i, int range)
	write truncated unsigned exp golomb code.
static void	set_se_golomb (PutBitContext *pb, int i)
	write signed exp golomb code.
static void	set_ur_golomb (PutBitContext *pb, int i, int k, int limit, int esc_len)
	write unsigned golomb rice code (ffv1).
static void	set_ur_golomb_jpegls (PutBitContext *pb, int i, int k, int limit, int esc_len)
	write unsigned golomb rice code (jpegls).
static void	set_sr_golomb (PutBitContext *pb, int i, int k, int limit, int esc_len)
	write signed golomb rice code (ffv1).
static void	set_sr_golomb_flac (PutBitContext *pb, int i, int k, int limit, int esc_len)
	write signed golomb rice code (flac).
Variables
const uint8_t	ff_golomb_vlc_len [512]
const uint8_t	ff_ue_golomb_vlc_code [512]
const int8_t	ff_se_golomb_vlc_code [512]
const uint8_t	ff_ue_golomb_len [256]
const uint8_t	ff_interleaved_golomb_vlc_len [256]
const uint8_t	ff_interleaved_ue_golomb_vlc_code [256]
const int8_t	ff_interleaved_se_golomb_vlc_code [256]
const uint8_t	ff_interleaved_dirac_golomb_vlc_code [256]

---

Detailed Description

exp golomb vlc stuff

Author:

Michael Niedermayer <michaelni@gmx.at> and Alex Beregszaszi

Definition in file golomb.h.

---

Define Documentation

#define INVALID_VLC   0x80000000

Definition at line 37 of file golomb.h.

Referenced by svq3_get_se_golomb(), and svq3_mc_dir().

---

Function Documentation

static int dirac_get_se_golomb

(

GetBitContext *

gb

)

[inline, static]

Definition at line 231 of file golomb.h.

Referenced by codeblock(), dirac_decode_picture_header(), and dirac_unpack_prediction_parameters().

static int get_se_golomb

(

GetBitContext *

gb

)

[inline, static]

read signed exp golomb code.

Definition at line 170 of file golomb.h.

Referenced by decode_mb_i(), decode_pic(), decode_residual_inter(), decode_scaling_list(), decode_slice_header(), ff_cavs_mv(), ff_h264_decode_mb_cavlc(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_seq_parameter_set(), intlist_read(), and pred_weight_table().

static int get_sr_golomb	(	GetBitContext *	gb,
		int	k,
		int	limit,
		int	esc_len
	)			[inline, static]

read signed golomb rice code (ffv1).

Definition at line 336 of file golomb.h.

Referenced by get_vlc_symbol().

static int get_sr_golomb_flac	(	GetBitContext *	gb,
		int	k,
		int	limit,
		int	esc_len
	)			[inline, static]

read signed golomb rice code (flac).

Definition at line 349 of file golomb.h.

Referenced by decode_residuals().

static int get_sr_golomb_shorten	(	GetBitContext *	gb,
		int	k
	)			[inline, static]

read signed golomb rice code (shorten).

Definition at line 364 of file golomb.h.

Referenced by decode_subframe_lpc().

static int get_te0_golomb	(	GetBitContext *	gb,
		int	range
	)			[inline, static]

read unsigned truncated exp golomb code.

Definition at line 148 of file golomb.h.

static int get_te_golomb	(	GetBitContext *	gb,
		int	range
	)			[inline, static]

read unsigned truncated exp golomb code.

Definition at line 159 of file golomb.h.

static int get_ue_golomb

(

GetBitContext *

gb

)

[inline, static]

read unsigned exp golomb code.

Definition at line 53 of file golomb.h.

Referenced by decode_mb_i(), decode_nal_units(), decode_pic(), decode_recovery_point(), decode_residual_inter(), decode_slice_header(), decode_vui_parameters(), ff_h264_decode_mb_cavlc(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_ref_pic_list_reordering(), ff_h264_decode_ref_pic_marking(), ff_h264_decode_seq_parameter_set(), get_te0_golomb(), get_te_golomb(), get_ue_code(), parse_nal_units(), and pred_weight_table().

static int get_ue_golomb_31

(

GetBitContext *

gb

)

[inline, static]

read unsigned exp golomb code, constraint to a max of 31.

the return value is undefined if the stored value exceeds 31.

Definition at line 96 of file golomb.h.

Referenced by decode_buffering_period(), decode_hrd_parameters(), decode_slice_header(), ff_h264_decode_mb_cavlc(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_ref_pic_list_reordering(), ff_h264_decode_ref_pic_marking(), ff_h264_decode_seq_parameter_set(), and parse_nal_units().

static unsigned get_ue_golomb_long

(

GetBitContext *

gb

)

[inline, static]

Read an unsigned Exp-Golomb code in the range 0 to UINT32_MAX-1.

Definition at line 81 of file golomb.h.

Referenced by decode_hrd_parameters(), decode_slice_header(), ff_h264_find_frame_end(), and parse_nal_units().

static int get_ur_golomb	(	GetBitContext *	gb,
		int	k,
		int	limit,
		int	esc_len
	)			[inline, static]

read unsigned golomb rice code (ffv1).

Definition at line 252 of file golomb.h.

Referenced by get_sr_golomb().

static int get_ur_golomb_jpegls	(	GetBitContext *	gb,
		int	k,
		int	limit,
		int	esc_len
	)			[inline, static]

read unsigned golomb rice code (jpegls).

Definition at line 285 of file golomb.h.

Referenced by get_sr_golomb_flac(), get_sr_golomb_shorten(), get_ur_golomb_shorten(), loco_get_rice(), ls_get_code_regular(), and ls_get_code_runterm().

static unsigned int get_ur_golomb_shorten	(	GetBitContext *	gb,
		int	k
	)			[inline, static]

read unsigned golomb rice code (shorten).

Definition at line 357 of file golomb.h.

Referenced by decode_subframe_lpc(), get_uint(), read_header(), and shorten_decode_frame().

static void set_se_golomb	(	PutBitContext *	pb,
		int	i
	)			[inline, static]

write signed exp golomb code.

16 bits at most.

Definition at line 463 of file golomb.h.

Referenced by intlist_write().

static void set_sr_golomb	(	PutBitContext *	pb,
		int	i,
		int	k,
		int	limit,
		int	esc_len
	)			[inline, static]

write signed golomb rice code (ffv1).

Definition at line 525 of file golomb.h.

Referenced by put_vlc_symbol().

static void set_sr_golomb_flac	(	PutBitContext *	pb,
		int	i,
		int	k,
		int	limit,
		int	esc_len
	)			[inline, static]

write signed golomb rice code (flac).

Definition at line 537 of file golomb.h.

Referenced by write_subframes().

static void set_te_golomb	(	PutBitContext *	pb,
		int	i,
		int	range
	)			[inline, static]

write truncated unsigned exp golomb code.

Definition at line 452 of file golomb.h.

static void set_ue_golomb	(	PutBitContext *	pb,
		int	i
	)			[inline, static]

write unsigned exp golomb code.

Definition at line 429 of file golomb.h.

Referenced by set_se_golomb(), and set_te_golomb().

static void set_ur_golomb	(	PutBitContext *	pb,
		int	i,
		int	k,
		int	limit,
		int	esc_len
	)			[inline, static]

write unsigned golomb rice code (ffv1).

Definition at line 482 of file golomb.h.

Referenced by set_sr_golomb().

static void set_ur_golomb_jpegls	(	PutBitContext *	pb,
		int	i,
		int	k,
		int	limit,
		int	esc_len
	)			[inline, static]

write unsigned golomb rice code (jpegls).

Definition at line 498 of file golomb.h.

Referenced by ls_encode_regular(), ls_encode_runterm(), and set_sr_golomb_flac().

static int svq3_get_se_golomb

(

GetBitContext *

gb

)

[inline, static]

Definition at line 198 of file golomb.h.

Referenced by rv34_decode_mv(), svq3_decode_mb(), and svq3_mc_dir().

static int svq3_get_ue_golomb

(

GetBitContext *

gb

)

[inline, static]

Definition at line 110 of file golomb.h.

Referenced by avpriv_dirac_parse_sequence_header(), coeff_unpack_golomb(), decode_component(), dirac_get_se_golomb(), dirac_unpack_block_motion_data(), dirac_unpack_idwt_params(), dirac_unpack_prediction_parameters(), parse_source_parameters(), rv30_decode_intra_types(), rv30_decode_mb_info(), rv40_decode_mb_info(), svq3_decode_block(), svq3_decode_frame(), svq3_decode_init(), svq3_decode_mb(), and svq3_decode_slice_header().

---

Variable Documentation

const uint8_t ff_golomb_vlc_len[512]

Definition at line 31 of file golomb.c.

Referenced by get_se_golomb(), get_ue_golomb(), and get_ue_golomb_31().

const uint8_t ff_interleaved_dirac_golomb_vlc_code[256]

Definition at line 157 of file golomb.c.

Referenced by svq3_get_ue_golomb().

const uint8_t ff_interleaved_golomb_vlc_len[256]

Definition at line 100 of file golomb.c.

Referenced by svq3_get_se_golomb(), and svq3_get_ue_golomb().

const int8_t ff_interleaved_se_golomb_vlc_code[256]

Definition at line 138 of file golomb.c.

Referenced by svq3_get_se_golomb().

const uint8_t ff_interleaved_ue_golomb_vlc_code[256]

Definition at line 119 of file golomb.c.

Referenced by svq3_get_ue_golomb().

const int8_t ff_se_golomb_vlc_code[512]

Definition at line 69 of file golomb.c.

Referenced by get_se_golomb().

const uint8_t ff_ue_golomb_len[256]

Definition at line 89 of file golomb.c.

Referenced by set_ue_golomb().

const uint8_t ff_ue_golomb_vlc_code[512]

Definition at line 50 of file golomb.c.

Referenced by get_ue_golomb(), and get_ue_golomb_31().