FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/d_gain_c.c @ 585:3c6bf0d26ee7 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
TW-TS-005 reader: fix maximum line length bug TW-TS-005 section 4.1 states: The maximum allowed length of each line is 80 characters, not including the OS-specific newline encoding. The implementation of this line length limit in the TW-TS-005 hex file reader function in the present suite was wrong, such that lines of the full maximum length could not be read. Fix it. Note that this bug affects comment lines too, not just actual RTP payloads. Neither Annex A nor Annex B features an RTP payload format that goes to the maximum of 40 bytes, but if a comment line goes to the maximum allowed length of 80 characters not including the terminating newline, the bug will be triggered, necessitating the present fix.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 25 Feb 2025 07:49:28 +0000
parents a723d9f9f697
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
339
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ********************************************************************************
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 ********************************************************************************
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : d_gain_c.c
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 ********************************************************************************
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 /*
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 ********************************************************************************
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 * MODULE INCLUDE FILE AND VERSION ID
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 ********************************************************************************
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 #include "namespace.h"
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 #include "d_gain_c.h"
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 /*
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 ********************************************************************************
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 * INCLUDE FILES
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 ********************************************************************************
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 #include "tw_amr.h"
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 #include "typedef.h"
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 #include "basic_op.h"
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 #include "oper_32b.h"
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 #include "no_count.h"
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 #include "cnst.h"
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 #include "log2.h"
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 #include "pow2.h"
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 #include "gc_pred.h"
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 #include "gains_tab.h"
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 /*
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 ********************************************************************************
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 * PUBLIC PROGRAM CODE
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 ********************************************************************************
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 /*
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 **************************************************************************
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 * Function : d_gain_code
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 * Purpose : Decode the fixed codebook gain using the received index.
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 **************************************************************************
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 void d_gain_code (
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 gc_predState *pred_state, /* i/o : MA predictor state */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 enum Mode mode, /* i : AMR mode (MR795 or MR122) */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 Word16 index, /* i : received quantization index */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 Word16 code[], /* i : innovation codevector */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 Word16 *gain_code /* o : decoded innovation gain */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 )
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 {
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 Word16 gcode0, exp, frac;
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 const Word16 *p;
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 Word16 qua_ener_MR122, qua_ener;
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 Word16 exp_inn_en;
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 Word16 frac_inn_en;
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 Word32 L_tmp;
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 /*-------------- Decode codebook gain ---------------*/
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 /*-------------------------------------------------------------------*
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 * predict codebook gain *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 * ~~~~~~~~~~~~~~~~~~~~~ *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 * gc0 = Pow2(int(d)+frac(d)) *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 * = 2^exp + 2^frac *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 * *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 *-------------------------------------------------------------------*/
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 gc_pred(pred_state, mode, code, &exp, &frac,
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 &exp_inn_en, &frac_inn_en);
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 p = &qua_gain_code[add (add (index, index), index)];
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 /* Different scalings between MR122 and the other modes */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 test ();
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 if (sub(mode, MR122) == 0)
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 {
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 gcode0 = extract_l (Pow2 (exp, frac)); /* predicted gain */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 gcode0 = shl (gcode0, 4);
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 *gain_code = shl (mult (gcode0, *p++), 1); move16 ();
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 }
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 else
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 {
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 gcode0 = extract_l (Pow2 (14, frac));
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 L_tmp = L_mult(*p++, gcode0);
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 L_tmp = L_shr(L_tmp, sub(9, exp));
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 *gain_code = extract_h(L_tmp); /* Q1 */
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 }
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100 /*-------------------------------------------------------------------*
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 * update table of past quantized energies *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 *-------------------------------------------------------------------*/
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 qua_ener_MR122 = *p++; move16();
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 qua_ener = *p++; move16();
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106 gc_pred_update(pred_state, qua_ener_MR122, qua_ener);
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 return;
a723d9f9f697 libtwamr: integrate d_gain_c.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 }