libavcodec/ratecontrol.c File Reference

Rate control for video encoders. More...

#include "libavutil/intmath.h"
#include "avcodec.h"
#include "dsputil.h"
#include "ratecontrol.h"
#include "mpegvideo.h"
#include "libavutil/eval.h"
#include <assert.h>

Go to the source code of this file.

Functions
static int	init_pass2 (MpegEncContext *s)
static double	get_qscale (MpegEncContext *s, RateControlEntry *rce, double rate_factor, int frame_num)
	Modify the bitrate curve from pass1 for one frame.
void	ff_write_pass1_stats (MpegEncContext *s)
static double	get_fps (AVCodecContext *avctx)
static double	qp2bits (RateControlEntry *rce, double qp)
static double	bits2qp (RateControlEntry *rce, double bits)
int	ff_rate_control_init (MpegEncContext *s)
void	ff_rate_control_uninit (MpegEncContext *s)
int	ff_vbv_update (MpegEncContext *s, int frame_size)
static double	get_diff_limited_q (MpegEncContext *s, RateControlEntry *rce, double q)
static void	get_qminmax (int *qmin_ret, int *qmax_ret, MpegEncContext *s, int pict_type)
	Get the qmin & qmax for pict_type.
static double	modify_qscale (MpegEncContext *s, RateControlEntry *rce, double q, int frame_num)
static double	predict_size (Predictor *p, double q, double var)
static void	update_predictor (Predictor *p, double q, double var, double size)
static void	adaptive_quantization (MpegEncContext *s, double q)
void	ff_get_2pass_fcode (MpegEncContext *s)
float	ff_rate_estimate_qscale (MpegEncContext *s, int dry_run)

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Detailed Description

Rate control for video encoders.

Definition in file ratecontrol.c.

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Function Documentation

static void adaptive_quantization	(	MpegEncContext *	s,
		double	q
	)			[static]

Definition at line 535 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale().

static double bits2qp	(	RateControlEntry *	rce,
		double	bits
	)			[inline, static]

Definition at line 63 of file ratecontrol.c.

Referenced by ff_rate_control_init(), get_qscale(), and modify_qscale().

void ff_get_2pass_fcode

(

MpegEncContext *

s

)

Definition at line 645 of file ratecontrol.c.

Referenced by encode_picture().

int ff_rate_control_init

(

MpegEncContext *

s

)

Definition at line 70 of file ratecontrol.c.

Referenced by encode_init(), and ff_MPV_encode_init().

void ff_rate_control_uninit

(

MpegEncContext *

s

)

Definition at line 265 of file ratecontrol.c.

Referenced by ff_MPV_encode_end().

float ff_rate_estimate_qscale	(	MpegEncContext *	s,
		int	dry_run
	)

Definition at line 657 of file ratecontrol.c.

Referenced by encode_frame(), estimate_qp(), and ratecontrol_1pass().

int ff_vbv_update	(	MpegEncContext *	s,
		int	frame_size
	)

Definition at line 279 of file ratecontrol.c.

Referenced by ff_MPV_encode_picture(), init_pass2(), and select_input_picture().

void ff_write_pass1_stats

(

MpegEncContext *

s

)

Definition at line 45 of file ratecontrol.c.

Referenced by encode_frame(), and ff_MPV_encode_picture().

static double get_diff_limited_q	(	MpegEncContext *	s,
		RateControlEntry *	rce,
		double	q
	)			[static]

Definition at line 389 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale(), and init_pass2().

static double get_fps

(

AVCodecContext *

avctx

)

[static]

Definition at line 52 of file ratecontrol.c.

Referenced by ff_rate_control_init(), ff_rate_estimate_qscale(), ff_vbv_update(), init_pass2(), and modify_qscale().

static void get_qminmax	(	int *	qmin_ret,
		int *	qmax_ret,
		MpegEncContext *	s,
		int	pict_type
	)			[static]

Get the qmin & qmax for pict_type.

Definition at line 422 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale(), and modify_qscale().

static double get_qscale	(	MpegEncContext *	s,
		RateControlEntry *	rce,
		double	rate_factor,
		int	frame_num
	)			[static]

Modify the bitrate curve from pass1 for one frame.

Definition at line 318 of file ratecontrol.c.

static int init_pass2

(

MpegEncContext *

s

)

[static]

Definition at line 817 of file ratecontrol.c.

Referenced by ff_rate_control_init().

static double modify_qscale	(	MpegEncContext *	s,
		RateControlEntry *	rce,
		double	q,
		int	frame_num
	)			[static]

Definition at line 445 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale(), and init_pass2().

static double predict_size	(	Predictor *	p,
		double	q,
		double	var
	)			[static]

Definition at line 519 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale().

static double qp2bits	(	RateControlEntry *	rce,
		double	qp
	)			[inline, static]

Definition at line 56 of file ratecontrol.c.

Referenced by ff_rate_control_init(), get_qscale(), and init_pass2().

static void update_predictor	(	Predictor *	p,
		double	q,
		double	var,
		double	size
	)			[static]

Definition at line 524 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale().