FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/lflg_upd.c @ 521:68fe269b4316

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
gsmx-to-tw5a: actually write to the output file
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 19 Sep 2024 02:21:08 +0000
parents bd5614fc780a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
411
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 *****************************************************************************
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 *****************************************************************************
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : lflg_upd.c
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * Purpose : LTP_flag update for AMR VAD option 2
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 *
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 *****************************************************************************
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 */
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 #include "tw_amr.h"
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 #include "namespace.h"
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 #include "typedef.h"
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 #include "cnst.h"
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 #include "basic_op.h"
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 #include "oper_32b.h"
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 #include "no_count.h"
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 #include "vad2.h"
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 /***************************************************************************
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 *
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 * FUNCTION NAME: LTP_flag_update
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 *
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 * PURPOSE:
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 * Set LTP_flag if the LTP gain > LTP_THRESHOLD, where the value of
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 * LTP_THRESHOLD depends on the LTP analysis window length.
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 *
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 * INPUTS:
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 *
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 * mode
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 * AMR mode
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 * vadState->L_R0
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 * LTP energy
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 * vadState->L_Rmax
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 * LTP maximum autocorrelation
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 * OUTPUTS:
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 *
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 * vadState->LTP_flag
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 * Set if LTP gain > LTP_THRESHOLD
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 *
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 * RETURN VALUE:
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 *
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 * none
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 *
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 *************************************************************************/
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 void LTP_flag_update (vadState2 * st, Word16 mode)
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 {
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 Word16 thresh;
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 Word16 hi1;
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 Word16 lo1;
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 Word32 Ltmp;
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 test(); test();
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 if ((sub(mode, MR475) == 0) || (sub(mode, MR515) == 0))
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 {
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 thresh = (Word16)(32768.0*0.55); move16();
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 }
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 else if (sub(mode, MR102) == 0)
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 {
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 thresh = (Word16)(32768.0*0.60); move16();
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 }
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 else
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 {
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 thresh = (Word16)(32768.0*0.65); move16();
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 }
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 L_Extract (st->L_R0, &hi1, &lo1);
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 Ltmp = Mpy_32_16(hi1, lo1, thresh); test();
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 if (L_sub(st->L_Rmax, Ltmp) > 0)
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 {
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 st->LTP_flag = TRUE; move16();
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 }
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 else
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 {
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 st->LTP_flag = FALSE; move16();
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 }
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 return;
bd5614fc780a libtwamr: integrate VAD2 lflg_upd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 }