1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
#ifndef GSM_DEC_PRIVATE_H
#define GSM_DEC_PRIVATE_H
typedef short word; /* 16 bit signed int */
typedef long longword; /* 32 bit signed int */
typedef unsigned short uword; /* unsigned word */
typedef unsigned long ulongword; /* unsigned longword */
/* Table 4.6 Normalized direct mantissa used to compute xM/xmax
*/
/* i 0 1 2 3 4 5 6 7 */
word gsm_dec_FAC[8] = {
18431, 20479, 22527, 24575, 26623, 28671, 30719, 32767 };
struct gsm_state {
word dp0[ 280 ];
word z1; /* preprocessing.c, Offset_com. */
longword L_z2; /* Offset_com. */
int mp; /* Preemphasis */
word u[8]; /* short_term_aly_filter.c */
word LARpp[2][8]; /* */
word j; /* */
word nrp; /* 40 */ /* long_term.c, synthesis */
word v[9]; /* short_term.c, synthesis */
word msr; /* decoder.c, Postprocessing */
};
#define MIN_WORD ((-32767)-1)
#define MAX_WORD ( 32767)
#define MIN_LONGWORD ((-2147483647)-1)
#define MAX_LONGWORD ( 2147483647)
/* >> is a signed arithmetic shift right */
#define SASR(x, by) ((x) >> (by))
/* Table 4.3b Quantization levels of the LTP gain quantizer
*/
/* bc 0 1 2 3 */
word gsm_dec_QLB[4] = { 3277, 11469, 21299, 32767 };
#endif /* GSM_DEC_PRIVATE_H */
|
