FFmpeg: libavcodec/golomb.h File Reference

exp golomb vlc stuff

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

Go to the source code of this file.

Macros
#define	INVALID_VLC 0x80000000

Functions
static int	get_ue_golomb (GetBitContext *gb)
	Read an unsigned Exp-Golomb code in the range 0 to 8190. More...

static unsigned	get_ue_golomb_long (GetBitContext *gb)
	Read an unsigned Exp-Golomb code in the range 0 to UINT32_MAX-1. More...

static int	get_ue_golomb_31 (GetBitContext *gb)
	read unsigned exp golomb code, constraint to a max of 31. More...

static unsigned	get_interleaved_ue_golomb (GetBitContext *gb)

static int	get_te0_golomb (GetBitContext *gb, int range)
	read unsigned truncated exp golomb code. More...

static int	get_te_golomb (GetBitContext *gb, int range)
	read unsigned truncated exp golomb code. More...

static int	get_se_golomb (GetBitContext *gb)
	read signed exp golomb code. More...

static int	get_se_golomb_long (GetBitContext *gb)

static int	get_interleaved_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). More...

static int	get_ur_golomb_jpegls (GetBitContext *gb, int k, int limit, int esc_len)
	read unsigned golomb rice code (jpegls). More...

static int	get_sr_golomb (GetBitContext *gb, int k, int limit, int esc_len)
	read signed golomb rice code (ffv1). More...

static int	get_sr_golomb_flac (GetBitContext *gb, int k, int limit, int esc_len)
	read signed golomb rice code (flac). More...

static unsigned int	get_ur_golomb_shorten (GetBitContext *gb, int k)
	read unsigned golomb rice code (shorten). More...

static int	get_sr_golomb_shorten (GetBitContext *gb, int k)
	read signed golomb rice code (shorten). More...

static void	set_ue_golomb (PutBitContext *pb, int i)
	write unsigned exp golomb code. More...

static void	set_ue_golomb_long (PutBitContext *pb, uint32_t i)
	write unsigned exp golomb code. More...

static void	set_te_golomb (PutBitContext *pb, int i, int range)
	write truncated unsigned exp golomb code. More...

static void	set_se_golomb (PutBitContext *pb, int i)
	write signed exp golomb code. More...

static void	set_ur_golomb (PutBitContext *pb, int i, int k, int limit, int esc_len)
	write unsigned golomb rice code (ffv1). More...

static void	set_ur_golomb_jpegls (PutBitContext *pb, int i, int k, int limit, int esc_len)
	write unsigned golomb rice code (jpegls). More...

static void	set_sr_golomb (PutBitContext *pb, int i, int k, int limit, int esc_len)
	write signed golomb rice code (ffv1). More...

static void	set_sr_golomb_flac (PutBitContext *pb, int i, int k, int limit, int esc_len)
	write signed golomb rice code (flac). More...

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 micha.nosp@m.elni.nosp@m.@gmx..nosp@m.at and Alex Beregszaszi

Definition in file golomb.h.

Macro Definition Documentation

#define INVALID_VLC 0x80000000

Definition at line 38 of file golomb.h.

Referenced by get_interleaved_se_golomb(), and rv34_decode_mv().

Function Documentation

static int get_ue_golomb ( GetBitContext * gb )

inlinestatic

Read an unsigned Exp-Golomb code in the range 0 to 8190.

Definition at line 53 of file golomb.h.

Referenced by decode_mb_i(), decode_pic(), decode_residual_inter(), decode_vui_parameters(), extend_code(), ff_h264_decode_mb_cavlc(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_seq_parameter_set(), ff_h264_parse_ref_count(), ff_h264_pred_weight_table(), get_te0_golomb(), get_te_golomb(), get_ue_code(), h264_slice_header_parse(), hevc_parse_slice_header(), main(), parse_nal_units(), and scan_mmco_reset().

static unsigned get_ue_golomb_long ( GetBitContext * gb )

inlinestatic

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

Definition at line 85 of file golomb.h.

Referenced by decode_display_orientation(), decode_frame_packing_arrangement(), decode_hrd(), decode_hrd_parameters(), decode_lt_rps(), decode_nal_sei_active_parameter_sets(), decode_nal_sei_frame_packing_arrangement(), decode_recovery_point(), decode_sublayer_hrd(), decode_vui(), ff_h264_decode_mb_cavlc(), ff_h264_decode_ref_pic_list_reordering(), ff_h264_decode_ref_pic_marking(), ff_hevc_decode_nal_pps(), ff_hevc_decode_nal_vps(), ff_hevc_decode_short_term_rps(), ff_hevc_parse_sps(), get_last_needed_nal(), get_se_golomb_long(), h264_find_frame_end(), h264_probe(), h264_slice_header_parse(), hls_slice_header(), hvcc_parse_pps(), hvcc_parse_sps(), hvcc_parse_vui(), main(), parse_nal_units(), parse_rps(), pps_range_extensions(), pred_weight_table(), scaling_list_data(), scan_mmco_reset(), skip_hrd_parameters(), skip_scaling_list_data(), skip_sub_layer_hrd_parameters(), skip_sub_layer_ordering_info(), and skip_timing_info().

static int get_ue_golomb_31 ( GetBitContext * gb )

inlinestatic

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 100 of file golomb.h.

Referenced by decode_buffering_period(), decode_hrd_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(), h264_slice_header_parse(), parse_nal_units(), and scan_mmco_reset().

static unsigned get_interleaved_ue_golomb ( GetBitContext * gb )

inlinestatic

Definition at line 115 of file golomb.h.

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

static int get_te0_golomb	(	GetBitContext *	gb,
		int	range
	)

inlinestatic

read unsigned truncated exp golomb code.

Definition at line 155 of file golomb.h.

static int get_te_golomb	(	GetBitContext *	gb,
		int	range
	)

inlinestatic

read unsigned truncated exp golomb code.

Definition at line 170 of file golomb.h.

static int get_se_golomb ( GetBitContext * gb )

inlinestatic

read signed exp golomb code.

Definition at line 183 of file golomb.h.

Referenced by decode_mb_i(), decode_pic(), decode_residual_inter(), decode_scaling_list(), ff_cavs_mv(), ff_h264_decode_mb_cavlc(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_seq_parameter_set(), ff_h264_pred_weight_table(), ff_hevc_decode_nal_pps(), fic_decode_block(), h264_slice_header_parse(), hls_slice_header(), main(), parse_nal_units(), pred_weight_table(), and scaling_list_data().

static int get_se_golomb_long ( GetBitContext * gb )

inlinestatic

Definition at line 215 of file golomb.h.

Referenced by hvcc_parse_pps(), pps_range_extensions(), and skip_scaling_list_data().

static int get_interleaved_se_golomb ( GetBitContext * gb )

inlinestatic

Definition at line 222 of file golomb.h.

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

static int dirac_get_se_golomb ( GetBitContext * gb )

inlinestatic

Definition at line 255 of file golomb.h.

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

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

inlinestatic

read unsigned golomb rice code (ffv1).

Definition at line 270 of file golomb.h.

Referenced by get_sr_golomb(), and get_sr_golomb_dst().

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

inlinestatic

read unsigned golomb rice code (jpegls).

Definition at line 305 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 int get_sr_golomb	(	GetBitContext *	gb,
		int	k,
		int	limit,
		int	esc_len
	)

inlinestatic

read signed golomb rice code (ffv1).

Definition at line 372 of file golomb.h.

Referenced by get_vlc_symbol().

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

inlinestatic

read signed golomb rice code (flac).

Definition at line 382 of file golomb.h.

Referenced by decode_residuals().

static unsigned int get_ur_golomb_shorten	(	GetBitContext *	gb,
		int	k
	)

inlinestatic

read unsigned golomb rice code (shorten).

Definition at line 392 of file golomb.h.

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

static int get_sr_golomb_shorten	(	GetBitContext *	gb,
		int	k
	)

inlinestatic

read signed golomb rice code (shorten).

Definition at line 400 of file golomb.h.

Referenced by decode_subframe_lpc().

static void set_ue_golomb	(	PutBitContext *	pb,
		int	i
	)

inlinestatic

write unsigned exp golomb code.

2^16 - 2 at most

Definition at line 463 of file golomb.h.

Referenced by ff_hevc_encode_nal_vps(), main(), set_se_golomb(), and set_te_golomb().

static void set_ue_golomb_long	(	PutBitContext *	pb,
		uint32_t	i
	)

inlinestatic

write unsigned exp golomb code.

2^32-2 at most.

Definition at line 479 of file golomb.h.

Referenced by main().

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

inlinestatic

write truncated unsigned exp golomb code.

Definition at line 494 of file golomb.h.

static void set_se_golomb	(	PutBitContext *	pb,
		int	i
	)

inlinestatic

write signed exp golomb code.

16 bits at most.

Definition at line 508 of file golomb.h.

Referenced by main().

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

inlinestatic

write unsigned golomb rice code (ffv1).

Definition at line 519 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
	)

inlinestatic

write unsigned golomb rice code (jpegls).

Definition at line 536 of file golomb.h.

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

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

inlinestatic

write signed golomb rice code (ffv1).

Definition at line 565 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
	)

inlinestatic

write signed golomb rice code (flac).

Definition at line 579 of file golomb.h.

Referenced by write_subframes().

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_ue_golomb_vlc_code[512]

Definition at line 50 of file golomb.c.

Referenced by get_ue_golomb(), and get_ue_golomb_31().

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(), and set_ue_golomb_long().

const uint8_t ff_interleaved_golomb_vlc_len[256]

Definition at line 100 of file golomb.c.

Referenced by get_interleaved_se_golomb(), and get_interleaved_ue_golomb().

const uint8_t ff_interleaved_ue_golomb_vlc_code[256]

Definition at line 119 of file golomb.c.

Referenced by get_interleaved_ue_golomb().

const int8_t ff_interleaved_se_golomb_vlc_code[256]

Definition at line 138 of file golomb.c.

Referenced by get_interleaved_se_golomb().

const uint8_t ff_interleaved_dirac_golomb_vlc_code[256]

Definition at line 157 of file golomb.c.

Referenced by get_interleaved_ue_golomb().