FFmpeg: libavcodec/ratecontrol.c File Reference

Rate control for video encoders. More...

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

Go to the source code of this file.

Macros
#define	M_E 2.718281828

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)

Detailed Description

Rate control for video encoders.

Definition in file ratecontrol.c.

Macro Definition Documentation

#define M_E 2.718281828

Definition at line 37 of file ratecontrol.c.

Referenced by config(), and get_qscale().

Function Documentation

static int init_pass2 ( MpegEncContext * s )

static

Definition at line 908 of file ratecontrol.c.

Referenced by ff_rate_control_init().

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 355 of file ratecontrol.c.

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

void ff_write_pass1_stats ( MpegEncContext * s )

Definition at line 44 of file ratecontrol.c.

Referenced by encode_frame(), and ff_MPV_encode_picture().

static double get_fps ( AVCodecContext * avctx )

static

Definition at line 65 of file ratecontrol.c.

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

static double qp2bits	(	RateControlEntry *	rce,
		double	qp
	)

inlinestatic

Definition at line 70 of file ratecontrol.c.

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

static double bits2qp	(	RateControlEntry *	rce,
		double	bits
	)

inlinestatic

Definition at line 78 of file ratecontrol.c.

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

int ff_rate_control_init ( MpegEncContext * s )

Definition at line 86 of file ratecontrol.c.

Referenced by encode_init(), and ff_MPV_encode_init().

void ff_rate_control_uninit ( MpegEncContext * s )

Definition at line 299 of file ratecontrol.c.

Referenced by ff_MPV_encode_end().

int ff_vbv_update	(	MpegEncContext *	s,
		int	frame_size
	)

Definition at line 313 of file ratecontrol.c.

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

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

static

Definition at line 434 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale(), and init_pass2().

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 473 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale(), and modify_qscale().

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

static

Definition at line 501 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 592 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale().

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

static

Definition at line 597 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale().

static void adaptive_quantization	(	MpegEncContext *	s,
		double	q
	)

static

Definition at line 609 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale().

void ff_get_2pass_fcode ( MpegEncContext * s )

Definition at line 726 of file ratecontrol.c.

Referenced by encode_picture().

float ff_rate_estimate_qscale	(	MpegEncContext *	s,
		int	dry_run
	)

Definition at line 737 of file ratecontrol.c.

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