/* quantize_pvt include file
* Copyright (c) 1999 Takehiro TOMINAGA
*/
#pragma once
#define IXMAX_VAL 8206 /* ix always <= 8191+15. see count_bits() */
/* buggy Winamp decoder cannot handle values > 8191 */
/* #define IXMAX_VAL 8191 */
#define PRECALC_SIZE (IXMAX_VAL+2)
extern const char nr_of_sfb_block[6][3][4];
extern const char pretab[SBMAX_l];
extern const char slen1_tab[16];
extern const char slen2_tab[16];
extern const scalefac_struct sfBandIndex[9];
extern FLOAT pow43[PRECALC_SIZE];
#ifdef TAKEHIRO_IEEE754_HACK
extern FLOAT adj43asm[PRECALC_SIZE];
#else
extern FLOAT adj43[PRECALC_SIZE];
#endif
#define Q_MAX (256+1)
#define Q_MAX2 116 /* minimum possible number of
-cod_info->global_gain
+ ((scalefac[] + (cod_info->preflag ? pretab[sfb] : 0))
<< (cod_info->scalefac_scale + 1))
+ cod_info->subblock_gain[cod_info->window[sfb]] * 8;
for long block, 0+((15+3)<<2) = 18*4 = 72
for short block, 0+(15<<2)+7*8 = 15*4+56 = 116
*/
extern FLOAT pow20[Q_MAX + Q_MAX2 + 1];
extern FLOAT ipow20[Q_MAX];
typedef struct calc_noise_result_t {
FLOAT over_noise; /* sum of quantization noise > masking */
FLOAT tot_noise; /* sum of all quantization noise */
FLOAT max_noise; /* max quantization noise */
int over_count; /* number of quantization noise > masking */
int over_SSD; /* SSD-like cost of distorted bands */
int bits;
} calc_noise_result;
/**
* allows re-use of previously
* computed noise values
*/
typedef struct calc_noise_data_t {
int global_gain;
int sfb_count1;
int step[39];
FLOAT noise[39];
FLOAT noise_log[39];
} calc_noise_data;
int on_pe(lame_internal_flags&, const FLOAT pe[2][2], int targ_bits[2], int mean_bits, int gr, int cbr);
void reduce_side(int targ_bits[2], FLOAT ms_ener_ratio, int mean_bits, int max_bits);
void iteration_init(lame_internal_flags&);
int calc_xmin(lame_internal_flags const&,
III_psy_ratio const *const ratio, gr_info & cod_info, FLOAT * l3_xmin);
int calc_noise(const gr_info & cod_info,
const FLOAT * l3_xmin,
FLOAT * distort, calc_noise_result * const res, calc_noise_data * prev_noise);
void set_frame_pinfo(lame_internal_flags&, const III_psy_ratio ratio[2][2]);
/* takehiro.cpp */
int count_bits(lame_internal_flags const &, const FLOAT * const xr, gr_info&, calc_noise_data*);
int noquant_count_bits(lame_internal_flags const &, gr_info&, calc_noise_data*);
void best_huffman_divide(const lame_internal_flags&, gr_info&);
void best_scalefac_store(const lame_internal_flags&, int gr, int ch, III_side_info_t&);
int scale_bitcount(const lame_internal_flags&, gr_info&);
void huffman_init(lame_internal_flags&);
void init_xrpow_core_init(lame_internal_flags&);
FLOAT athAdjust(FLOAT a, FLOAT x, FLOAT athFloor, float ATHfixpoint);
#define LARGE_BITS 100000
| Detected encoding: UTF-8 | 0
|