2 * quantize_pvt include file
4 * Copyright (c) 1999 Takehiro TOMINAGA
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
22 #ifndef LAME_QUANTIZE_PVT_H
23 #define LAME_QUANTIZE_PVT_H
26 #define IXMAX_VAL 8206 /* ix always <= 8191+15. see count_bits() */
28 /* buggy Winamp decoder cannot handle values > 8191 */
29 /* #define IXMAX_VAL 8191 */
31 #define PRECALC_SIZE (IXMAX_VAL+2)
34 extern const int nr_of_sfb_block[6][3][4];
35 extern const char pretab[SBMAX_l];
36 extern const char slen1_tab[16];
37 extern const char slen2_tab[16];
39 extern const scalefac_struct sfBandIndex[9];
41 extern FLOAT8 pow43[PRECALC_SIZE];
42 extern FLOAT8 adj43[PRECALC_SIZE];
43 extern FLOAT8 adj43asm[PRECALC_SIZE];
47 extern FLOAT8 pow20[Q_MAX];
48 extern FLOAT8 ipow20[Q_MAX];
49 extern FLOAT8 *iipow20_;
51 typedef struct calc_noise_result_t {
52 int over_count; /* number of quantization noise > masking */
53 FLOAT8 over_noise; /* sum of quantization noise > masking */
54 FLOAT8 tot_noise; /* sum of all quantization noise */
55 FLOAT8 max_noise; /* max quantization noise */
59 void compute_ath (lame_global_flags * gfp, FLOAT8 ATH_l[SBPSY_l],
60 FLOAT8 ATH_s[SBPSY_l]);
62 void ms_convert (FLOAT8 xr[2][576], FLOAT8 xr_org[2][576]);
64 int on_pe (lame_global_flags *gfp, FLOAT8 pe[2][2], III_side_info_t * l3_side,
65 int targ_bits[2], int mean_bits, int gr);
67 void reduce_side (int targ_bits[2], FLOAT8 ms_ener_ratio, int mean_bits,
71 int bin_search_StepSize (lame_internal_flags * const gfc, gr_info * const cod_info,
72 const int desired_rate, const int start,
73 const FLOAT8 xrpow[576], int l3enc[576]);
75 int inner_loop (lame_internal_flags * const gfc, gr_info * const cod_info, const int max_bits,
76 const FLOAT8 xrpow[576], int l3enc[576]);
78 void iteration_init (lame_global_flags *gfp);
81 int calc_xmin (lame_global_flags *gfp, const FLOAT8 xr[576],
82 const III_psy_ratio * const ratio, const gr_info * const cod_info,
83 III_psy_xmin * const l3_xmin);
85 int calc_noise (const lame_internal_flags * const gfc, const FLOAT8 xr[576],
86 const int ix[576], const gr_info * const cod_info,
87 const III_psy_xmin * const l3_xmin,
88 const III_scalefac_t * const scalefac,
89 III_psy_xmin * distort, calc_noise_result * const res);
91 void set_frame_pinfo (lame_global_flags *gfp, FLOAT8 xr[2][2][576],
92 III_psy_ratio ratio[2][2], int l3_enc[2][2][576],
93 III_scalefac_t scalefac[2][2]);
96 void quantize_xrpow (const FLOAT8 *xr, int *ix, FLOAT8 istep);
98 void quantize_xrpow_ISO (const FLOAT8 *xr, int *ix, FLOAT8 istep);
104 int count_bits (lame_internal_flags * const gfc, int * const ix, const FLOAT8 * const xr,
105 gr_info * const cod_info);
108 void best_huffman_divide (const lame_internal_flags * const gfc,
109 gr_info * const cod_info, int * const ix);
111 void best_scalefac_store (const lame_internal_flags * gfc, const int gr, const int ch,
112 int l3_enc[2][2][576], III_side_info_t * const l3_side,
113 III_scalefac_t scalefac[2][2]);
115 int scale_bitcount (III_scalefac_t * const scalefac, gr_info * const cod_info);
117 int scale_bitcount_lsf (const lame_internal_flags *gfp, const III_scalefac_t * const scalefac,
118 gr_info * const cod_info);
120 void huffman_init (lame_internal_flags * const gfc);
122 #define LARGE_BITS 100000
124 #endif /* LAME_QUANTIZE_PVT_H */