FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/spstproc.c @ 485:751f06541fbb

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc/Codec-utils: clarify lack of DHF in gsmfr-decode-rb
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 20 May 2024 01:47:22 +0000
parents a37687c6ff22
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
404
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ********************************************************************************
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 ********************************************************************************
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : subframePostProc.c
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * Purpose : Subframe post processing
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 ********************************************************************************
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 /*
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 ********************************************************************************
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 * MODULE INCLUDE FILE AND VERSION ID
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 ********************************************************************************
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 #include "namespace.h"
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 #include "spstproc.h"
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 /*
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 ********************************************************************************
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 * INCLUDE FILES
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 ********************************************************************************
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 #include "typedef.h"
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 #include "basic_op.h"
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 #include "oper_32b.h"
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 #include "no_count.h"
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 #include "syn_filt.h"
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 #include "cnst.h"
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 /*
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 ********************************************************************************
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 * LOCAL VARIABLES AND TABLES
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 ********************************************************************************
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 /*
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 ********************************************************************************
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 * PUBLIC PROGRAM CODE
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 ********************************************************************************
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 int subframePostProc(
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 Word16 *speech, /* i : speech segment */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 enum Mode mode, /* i : coder mode */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 Word16 i_subfr, /* i : Subframe nr */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 Word16 gain_pit, /* i : Pitch gain Q14 */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 Word16 gain_code, /* i : Decoded innovation gain */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 Word16 *Aq, /* i : A(z) quantized for the 4 subframes */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 Word16 synth[], /* i : Local snthesis */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 Word16 xn[], /* i : Target vector for pitch search */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 Word16 code[], /* i : Fixed codebook exitation */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 Word16 y1[], /* i : Filtered adaptive exitation */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 Word16 y2[], /* i : Filtered fixed codebook excitation */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 Word16 *mem_syn, /* i/o : memory of synthesis filter */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 Word16 *mem_err, /* o : pointer to error signal */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 Word16 *mem_w0, /* o : memory of weighting filter */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 Word16 *exc, /* o : long term prediction residual */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 Word16 *sharp /* o : pitch sharpening value */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 )
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 {
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 Word16 i, j, k;
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 Word16 temp;
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 Word32 L_temp;
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 Word16 tempShift;
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 Word16 kShift;
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 Word16 pitch_fac;
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 test ();
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 if (sub(mode, MR122) != 0)
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 {
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 tempShift = 1; move16 ();
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 kShift = 2; move16 ();
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 pitch_fac = gain_pit; move16 ();
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 }
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 else
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 {
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 tempShift = 2; move16 ();
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 kShift = 4; move16 ();
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 pitch_fac = shr (gain_pit, 1);
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 }
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 /*------------------------------------------------------------*
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 * - Update pitch sharpening "sharp" with quantized gain_pit *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 *------------------------------------------------------------*/
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 *sharp = gain_pit; move16 ();
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 test ();
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 if (sub(*sharp, SHARPMAX) > 0)
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 {
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 *sharp = SHARPMAX; move16 ();
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 }
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 /*------------------------------------------------------*
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 * - Find the total excitation *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 * - find synthesis speech corresponding to exc[] *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100 * - update filters memories for finding the target *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 * vector in the next subframe *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102 * (update error[-m..-1] and mem_w_err[]) *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 *------------------------------------------------------*/
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 for (i = 0; i < L_SUBFR; i++) {
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106 /* exc[i] = gain_pit*exc[i] + gain_code*code[i]; */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 /*
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 * 12k2 others
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 * ---------------------------------
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 * exc Q0 Q0
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112 * gain_pit Q14 Q14
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 * pitch_fac Q13 Q14
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114 * product: Q14 Q15
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115 *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 * code Q12 Q13
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 * gain_code Q1 Q1
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 * product Q14 Q15
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 * sum Q14 Q15
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 * tempShift 2 1
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 * sum<<tempShift Q16 Q16
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 * result -> exc Q0 Q0
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 L_temp = L_mult (exc[i + i_subfr], pitch_fac);
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 L_temp = L_mac (L_temp, code[i], gain_code);
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 L_temp = L_shl (L_temp, tempShift);
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 exc[i + i_subfr] = round (L_temp); move16 ();
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 }
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 Syn_filt(Aq, &exc[i_subfr], &synth[i_subfr], L_SUBFR,
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 mem_syn, 1);
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 for (i = L_SUBFR - M, j = 0; i < L_SUBFR; i++, j++) {
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 mem_err[j] = sub(speech[i_subfr + i],
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 synth[i_subfr + i]); move16 ();
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 /*
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 * 12k2 others
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 * ---------------------------------
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 * y1 Q0 Q0
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 * gain_pit Q14 Q14
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 * product Q15 Q15
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 * shifted prod. Q16 Q16
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 * temp Q0 Q0
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 *
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 * y2 Q10 Q12
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 * gain_code Q1 Q1
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 * product Q12 Q14
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 * kshift 4 2
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 * shifted prod. Q16 Q16
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 * k Q0 Q0
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 * mem_w0,xn,sum Q0 Q0
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 */
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 temp = extract_h(L_shl(L_mult(y1[i], gain_pit), 1));
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 k = extract_h(L_shl(L_mult(y2[i], gain_code), kShift));
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 mem_w0[j] = sub(xn[i], add(temp, k)); move16 ();
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 }
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 return 0;
a37687c6ff22 libtwamr: integrate spstproc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 }