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/********************************************************************
* *
* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
* by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
function: mode selection code
last mod: $Id$
********************************************************************/
#if !defined(_collect_H)
# define _collect_H (1)
# include "encint.h"
# if defined(OC_COLLECT_METRICS)
# include <stdio.h>
typedef struct oc_mode_metrics oc_mode_metrics;
/**Sets the file name to load/store mode metrics from/to.
* The file name string is stored by reference, and so must be valid for the
* lifetime of the encoder.
* Mode metric collection uses global tables; do not attempt to perform
* multiple collections at once.
* \param[in] _buf <tt>char[]</tt> The file name.
* \retval TH_EIMPL Not supported by this implementation.*/
#define TH_ENCCTL_SET_METRICS_FILE (0x8000)
/*Accumulates various weighted sums of the measurements.
w -> weight
s -> SATD
q -> log quantizer
r -> rate (in bits)
d -> RMSE
All of the single letters correspond to direct, weighted sums, e.g.,
w=sum(w_i), s=sum(s_i*w_i), etc.
The others correspond to central moments (or co-moments) of the given order,
e.g., sq=sum((s_i-s/w)*(q_i-q/w)*w_i).
Because we need some moments up to fourth order, we use central moments to
minimize the dynamic range and prevent rounding error from dominating the
calculations.*/
struct oc_mode_metrics{
double w;
double s;
double q;
double r;
double d;
double s2;
double sq;
double q2;
double sr;
double qr;
double r2;
double sd;
double qd;
double d2;
double s2q;
double sq2;
double sqr;
double sqd;
double s2q2;
};
# define OC_ZWEIGHT (0.25)
/*TODO: It may be helpful (for block-level quantizers especially) to separate
out the contributions from AC and DC into separate tables.*/
extern ogg_int16_t OC_MODE_LOGQ[OC_LOGQ_BINS][3][2];
extern oc_mode_rd OC_MODE_RD_SATD[OC_LOGQ_BINS][3][2][OC_COMP_BINS];
extern oc_mode_rd OC_MODE_RD_SAD[OC_LOGQ_BINS][3][2][OC_COMP_BINS];
extern int OC_HAS_MODE_METRICS;
extern oc_mode_metrics OC_MODE_METRICS_SATD[OC_LOGQ_BINS-1][3][2][OC_COMP_BINS];
extern oc_mode_metrics OC_MODE_METRICS_SAD[OC_LOGQ_BINS-1][3][2][OC_COMP_BINS];
extern const char *OC_MODE_METRICS_FILENAME;
void oc_mode_metrics_dump();
void oc_mode_metrics_print(FILE *_fout);
void oc_mode_metrics_add(oc_mode_metrics *_metrics,
double _w,int _s,int _q,int _r,double _d);
void oc_mode_metrics_merge(oc_mode_metrics *_dst,
const oc_mode_metrics *_src,int _n);
double oc_mode_metrics_solve(double *_r,double *_d,
const oc_mode_metrics *_metrics,const int *_s0,const int *_s1,
const int *_q0,const int *_q1,
const double *_ra,const double *_rb,const double *_rc,
const double *_da,const double *_db,const double *_dc,int _n);
void oc_mode_metrics_update(oc_mode_metrics (*_metrics)[3][2][OC_COMP_BINS],
int _niters_min,int _reweight,oc_mode_rd (*_table)[3][2][OC_COMP_BINS],
int shift,double (*_weight)[3][2][OC_COMP_BINS]);
void oc_enc_mode_metrics_load(oc_enc_ctx *_enc);
void oc_enc_mode_metrics_collect(oc_enc_ctx *_enc);
# endif
#endif
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