rate_control.c File Reference

#include "rate_control.h"
#include <math.h>
#include "encoder.h"
#include "kvazaar.h"
#include "pthread.h"

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Macros
#define	BETA1   1.2517

Functions
static double	clip_lambda (double lambda)
	Clip lambda value to a valid range.
kvz_rc_data *	kvz_get_rc_data (const encoder_control_t *const encoder)
void	kvz_free_rc_data ()
static void	update_parameters (uint32_t bits, uint32_t pixels, double lambda_real, double *alpha, double *beta)
	Update alpha and beta parameters.
static double	gop_allocate_bits (encoder_state_t *const state)
	Allocate bits for the current GOP.
static int	xCalcHADs8x8_ISlice (kvz_pixel *piOrg, int y, int iStrideOrg)
static uint64_t	pic_header_bits (encoder_state_t *const state)
	Estimate number of bits used for headers of the current picture.
static double	pic_allocate_bits (encoder_state_t *const state)
	Allocate bits for the current picture.
static int8_t	lambda_to_qp (const double lambda)
static double	solve_cubic_equation (const encoder_state_config_frame_t *const state, int ctu_index, int last_ctu, double est_lambda, double target_bits)
static double	calculate_weights (encoder_state_t *const state, const int ctu_count, double est_lambda)
void	kvz_estimate_pic_lambda (encoder_state_t *const state)
static double	get_ctu_bits (encoder_state_t *const state, vector2d_t pos)
static double	qp_to_lambda (encoder_state_t *const state, int qp)
void	kvz_set_ctu_qp_lambda (encoder_state_t *const state, vector2d_t pos)
static void	update_pic_ck (encoder_state_t *const state, double bpp, double distortion, double lambda, int layer)
static void	update_ck (encoder_state_t *const state, int ctu_index, int layer)
static int	calc_poc (encoder_state_t *const state)
void	kvz_update_after_picture (encoder_state_t *const state)
void	kvz_set_picture_lambda_and_qp (encoder_state_t *const state)
	Allocate bits and set lambda and QP for the current picture.
static double	lcu_allocate_bits (encoder_state_t *const state, vector2d_t pos)
	Allocate bits for a LCU.
void	kvz_set_lcu_lambda_and_qp (encoder_state_t *const state, vector2d_t pos)

Variables
static const int	MIN_SMOOTHING_WINDOW = 40
static int	smoothing_window = 40
static const double	MIN_LAMBDA = 0.1
static const double	MAX_LAMBDA = 10000
static kvz_rc_data *	data
static FILE *	dist_file
static FILE *	bits_file
static FILE *	qp_file
static FILE *	lambda_file

Macro Definition Documentation

BETA1

#define BETA1   1.2517

Function Documentation

calc_poc()

static int calc_poc ( encoder_state_t *const  state )

static

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calculate_weights()

static double calculate_weights ( encoder_state_t *const  state, const int  ctu_count, double  est_lambda  )

inlinestatic

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clip_lambda()

static double clip_lambda ( double  lambda )

static

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get_ctu_bits()

static double get_ctu_bits ( encoder_state_t *const  state, vector2d_t  pos  )

static

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gop_allocate_bits()

static double gop_allocate_bits ( encoder_state_t *const  state )

static

Parameters

state

the main encoder state

Returns

target number of bits

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kvz_estimate_pic_lambda()

void kvz_estimate_pic_lambda

(

encoder_state_t *const

state

)

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kvz_free_rc_data()

void kvz_free_rc_data

(

)

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kvz_get_rc_data()

kvz_rc_data * kvz_get_rc_data

(

const encoder_control_t *const

encoder

)

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kvz_set_ctu_qp_lambda()

void kvz_set_ctu_qp_lambda	(	encoder_state_t *const	state,
		vector2d_t	pos
	)

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kvz_set_lcu_lambda_and_qp()

void kvz_set_lcu_lambda_and_qp	(	encoder_state_t *const	state,
		vector2d_t	pos
	)

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kvz_set_picture_lambda_and_qp()

void kvz_set_picture_lambda_and_qp

(

encoder_state_t *const

state

)

Parameters

state

the main encoder state

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kvz_update_after_picture()

void kvz_update_after_picture

(

encoder_state_t *const

state

)

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lambda_to_qp()

static int8_t lambda_to_qp ( const double  lambda )

static

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lcu_allocate_bits()

static double lcu_allocate_bits ( encoder_state_t *const  state, vector2d_t  pos  )

static

Parameters

state	the main encoder state
pos	location of the LCU as number of LCUs from top left

Returns

number of bits allocated for the LCU

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pic_allocate_bits()

static double pic_allocate_bits ( encoder_state_t *const  state )

static

Parameters

state

the main encoder state

Returns

target number of bits, excluding headers

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pic_header_bits()

static uint64_t pic_header_bits ( encoder_state_t *const  state )

static

Parameters

state

the main encoder state

Returns

number of header bits

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qp_to_lambda()

static double qp_to_lambda ( encoder_state_t *const  state, int  qp  )

static

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solve_cubic_equation()

static double solve_cubic_equation ( const encoder_state_config_frame_t *const  state, int  ctu_index, int  last_ctu, double  est_lambda, double  target_bits  )

static

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update_ck()

static void update_ck ( encoder_state_t *const  state, int  ctu_index, int  layer  )

static

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update_parameters()

static void update_parameters ( uint32_t  bits, uint32_t  pixels, double  lambda_real, double *  alpha, double *  beta  )

static

Parameters

	bits	number of bits spent for coding the area
	pixels	size of the area in pixels
	lambda_real	lambda used for coding the area
[in,out]	alpha	alpha parameter to update
[in,out]	beta	beta parameter to update

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update_pic_ck()

static void update_pic_ck ( encoder_state_t *const  state, double  bpp, double  distortion, double  lambda, int  layer  )

static

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xCalcHADs8x8_ISlice()

static int xCalcHADs8x8_ISlice ( kvz_pixel *  piOrg, int  y, int  iStrideOrg  )

static

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Variable Documentation

bits_file

FILE* bits_file

static

data

kvz_rc_data* data

static

dist_file

FILE* dist_file

static

lambda_file

FILE* lambda_file

static

MAX_LAMBDA

const double MAX_LAMBDA = 10000

static

MIN_LAMBDA

const double MIN_LAMBDA = 0.1

static

MIN_SMOOTHING_WINDOW

const int MIN_SMOOTHING_WINDOW = 40

static

qp_file

FILE* qp_file

static

smoothing_window

int smoothing_window = 40

static