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	ComputeMBMAD ()
double	ComputeFrameMAD ()
void	rc_copy_generic (rc_generic *dst, rc_generic *src)
void	rc_alloc_generic (rc_generic **prc)
void	rc_free_generic (rc_generic **prc)
void	rc_init_gop_params (void)
void	rc_init_frame (int FrameNumberInFile)
void	rc_init_sequence (void)
void	rc_store_slice_header_bits (int len)
void	rc_store_diff (int cpix_x, int cpix_y, imgpel **prediction)
Variables
int	diffy [16][16]

---

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.

---

Function Documentation

double ComputeFrameMAD

(

void

)

Compute Frame MAD.

Definition at line 149 of file ratectl.c.

References ImageParameters::FrameSizeInMbs.

Referenced by rc_update_pict(), and updateRCModel().

int ComputeMBMAD

(

void

)

calculate MAD for the current macroblock

Returns:

calculated MAD

Definition at line 131 of file ratectl.c.

Referenced by rc_store_mad().

double QP2Qstep

(

int

QP

)

map QP to Qstep

Definition at line 50 of file ratectl.c.

Referenced by Qstep2QP(), and updateRCModel().

int Qstep2QP

(

double

Qstep

)

map Qstep to QP

Definition at line 71 of file ratectl.c.

References QP2Qstep().

Referenced by updateModelQPBU(), and updateModelQPFrame().

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void rc_alloc_generic

(

rc_generic **

prc

)

Dynamically allocate memory needed for generic rate control.

Definition at line 190 of file ratectl.c.

References ImageParameters::FrameSizeInMbs, and no_mem_exit().

Referenced by rc_allocate_memory().

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void rc_copy_generic	(	rc_generic *	dst,
		rc_generic *	src
	)

Copy JVT rate control objects.

Definition at line 166 of file ratectl.c.

References ImageParameters::FrameSizeInMbs.

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

void rc_free_generic

(

rc_generic **

prc

)

Free memory needed for generic rate control.

Definition at line 213 of file ratectl.c.

Referenced by rc_free_memory().

void rc_init_frame

(

int

FrameNumberInFile

)

Initialize Frame Level Rate Control parameters.

Definition at line 299 of file ratectl.c.

References ImageParameters::BasicUnit, InputParameters::basicunit, ImageParameters::FrameSizeInMbs, InputParameters::MbInterlace, ImageParameters::number, ImageParameters::qp, rc_copy_generic(), rc_copy_quadratic(), InputParameters::RCUpdateMode, InputParameters::RDPictureDecision, and ImageParameters::type.

Referenced by encode_one_frame().

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void rc_init_gop_params

(

void

)

Initialize GOP Level Rate Control parameters.

Definition at line 234 of file ratectl.c.

References InputParameters::adaptive_idr_period, ImageParameters::frm_number, InputParameters::idr_period, ImageParameters::lastIDRnumber, ImageParameters::lastIntraNumber, InputParameters::no_frm_base, ImageParameters::number, InputParameters::NumberBFrames, rc_init_GOP(), and InputParameters::RCUpdateMode.

Referenced by prepare_first_layer().

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void rc_init_sequence

(

void

)

Initialize Sequence Level Rate Control parameters.

Definition at line 336 of file ratectl.c.

References rc_init_seq(), and InputParameters::RCUpdateMode.

Referenced by init_encoder().

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void rc_store_diff	(	int	cpix_x,
		int	cpix_y,
		imgpel **	prediction
	)

Update Rate Control Difference.

Definition at line 371 of file ratectl.c.

References pCurImg.

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 33 of file ratectl.c.

References InputParameters::basicunit, ComputeMBMAD(), ImageParameters::current_mb_nr, and ImageParameters::FrameSizeInMbs.

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

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