ratectl.c File Reference

Rate Control algorithm. More...

#include <math.h>
#include <limits.h>
#include "global.h"
#include "ratectl.h"

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Functions
void	rc_store_mad (Macroblock *currMB)
double	QP2Qstep (int QP)
int	Qstep2QP (double Qstep, int qp_offset)
int	ComputeMBMAD (int diffy[16][16])
double	ComputeFrameMAD (ImageParameters *p_Img)
void	rc_copy_generic (ImageParameters *p_Img, RCGeneric *dst, RCGeneric *src)
void	rc_alloc_generic (ImageParameters *p_Img, RCGeneric **p_quad)
void	rc_free_generic (RCGeneric **p_quad)
void	rc_init_gop_params (ImageParameters *p_Img, InputParameters *p_Inp)
void	rc_init_frame (ImageParameters *p_Img, InputParameters *p_Inp)
void	rc_init_sequence (ImageParameters *p_Img, InputParameters *p_Inp)
void	rc_store_slice_header_bits (ImageParameters *p_Img, InputParameters *p_Inp, int len)
void	rc_store_diff (int diffy[16][16], imgpel **p_curImg, int cpix_x, imgpel **prediction)

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Detailed Description

Rate Control algorithm.

Author:

Main contributors (see contributors.h for copyright, address and affiliation details)

• Siwei Ma <swma@jdl.ac.cn>
• Zhengguo LI<ezgli@lit.a-star.edu.sg>

Date:

16 Jan. 2003

Definition in file ratectl.c.

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Function Documentation

double ComputeFrameMAD

(

ImageParameters *

p_Img

)

Compute Frame MAD.

Definition at line 151 of file ratectl.c.

Referenced by rc_update_pict(), and updateRCModel().

int ComputeMBMAD

(

int

diffy[16][16]

)

calculate MAD for the current macroblock

Returns:

calculated MAD

Definition at line 133 of file ratectl.c.

Referenced by rc_store_mad().

double QP2Qstep

(

int

QP

)

map QP to Qstep

Definition at line 53 of file ratectl.c.

Referenced by Qstep2QP(), and updateRCModel().

int Qstep2QP	(	double	Qstep,
		int	qp_offset
	)

map Qstep to QP

Definition at line 74 of file ratectl.c.

References QP2Qstep().

Referenced by updateModelQPBU(), and updateModelQPFrame().

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void rc_alloc_generic	(	ImageParameters *	p_Img,
		RCGeneric **	p_quad
	)

Dynamically allocate memory needed for generic rate control.

Definition at line 192 of file ratectl.c.

References no_mem_exit().

Referenced by rc_allocate_memory().

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void rc_copy_generic	(	ImageParameters *	p_Img,
		RCGeneric *	dst,
		RCGeneric *	src
	)

Copy JVT rate control objects.

Definition at line 168 of file ratectl.c.

Referenced by encode_one_slice_MBAFF(), rc_init_frame(), rc_init_frame_rdpic(), rc_restore_state(), and rc_save_state().

void rc_free_generic

(

RCGeneric **

p_quad

)

Free memory needed for generic rate control.

Definition at line 215 of file ratectl.c.

Referenced by rc_free_memory().

void rc_init_frame	(	ImageParameters *	p_Img,
		InputParameters *	p_Inp
	)

Initialize Frame Level Rate Control parameters.

Definition at line 303 of file ratectl.c.

References inp_par_enc::MbInterlace, img_par::number, img_par::qp, rc_copy_generic(), rc_copy_quadratic(), and inp_par_enc::RDPictureDecision.

Referenced by encode_one_frame().

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void rc_init_gop_params	(	ImageParameters *	p_Img,
		InputParameters *	p_Inp
	)

Initialize GOP Level Rate Control parameters.

Definition at line 236 of file ratectl.c.

References inp_par_enc::idr_period, inp_par_enc::no_frm_base, img_par::number, inp_par_enc::NumberBFrames, and rc_init_GOP().

Referenced by prepare_first_layer().

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void rc_init_sequence	(	ImageParameters *	p_Img,
		InputParameters *	p_Inp
	)

Initialize Sequence Level Rate Control parameters.

Definition at line 340 of file ratectl.c.

References rc_init_seq().

Referenced by init_encoder().

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void rc_store_diff	(	int	diffy[16][16],
		imgpel **	p_curImg,
		int	cpix_x,
		imgpel **	prediction
	)

Update Rate Control Difference.

Definition at line 375 of file ratectl.c.

Referenced by compute_mode_RD_cost(), encode_one_macroblock_high(), encode_one_macroblock_highfast(), encode_one_macroblock_highloss(), and encode_one_macroblock_low().

void rc_store_mad

(

Macroblock *

currMB

)

Update Rate Control Parameters.

Definition at line 32 of file ratectl.c.

References ComputeMBMAD(), macroblock::mbAddrX, macroblock::p_Img, and macroblock::p_slice.

Referenced by encode_one_macroblock_high(), encode_one_macroblock_highfast(), encode_one_macroblock_highloss(), and encode_one_macroblock_low().

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