ratecontrol.c File Reference

Rate control for video encoders. More...

#include "libavutil/attributes.h"
#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)
av_cold int	ff_rate_control_init (MpegEncContext *s)
av_cold 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 38 of file ratecontrol.c.

Referenced by get_qscale().

Function Documentation

static int init_pass2 ( MpegEncContext *  s )

static

Definition at line 912 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 359 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 45 of file ratecontrol.c.

Referenced by encode_frame(), and ff_MPV_encode_picture().

static double get_fps ( AVCodecContext *  avctx )

static

Definition at line 66 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 71 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 79 of file ratecontrol.c.

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

av_cold int ff_rate_control_init

(

MpegEncContext *

s

)

Definition at line 87 of file ratecontrol.c.

Referenced by encode_init(), and ff_MPV_encode_init().

av_cold void ff_rate_control_uninit

(

MpegEncContext *

s

)

Definition at line 300 of file ratecontrol.c.

Referenced by encode_end(), and ff_MPV_encode_end().

int ff_vbv_update	(	MpegEncContext *	s,
		int	frame_size
	)

Definition at line 314 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 438 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 477 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 505 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 596 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 601 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale().

static void adaptive_quantization ( MpegEncContext *  s, double  q  )

static

Definition at line 613 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale().

void ff_get_2pass_fcode

(

MpegEncContext *

s

)

Definition at line 730 of file ratecontrol.c.

Referenced by encode_picture().

float ff_rate_estimate_qscale	(	MpegEncContext *	s,
		int	dry_run
	)

Definition at line 741 of file ratecontrol.c.

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