FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/c_g_aver.c @ 544:bd32bb1e8dab

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc/EFR-library-API: document malloc-alternative provision
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 03 Oct 2024 08:22:41 +0000
parents dc3b7caa59c4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
324
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * R99 Version 3.3.0
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * REL-4 Version 4.1.0
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 ********************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 * File : c_g_aver.c
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * Purpose :
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 ********************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 /*
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 ********************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 * MODULE INCLUDE FILE AND VERSION ID
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 ********************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 #include "namespace.h"
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 #include "c_g_aver.h"
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 #include "tw_amr.h"
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 #include "typedef.h"
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 #include "basic_op.h"
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 #include "no_count.h"
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 #include "cnst.h"
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 #include "memops.h"
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 /*
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 ********************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 * LOCAL VARIABLES AND TABLES
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 ********************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 /*-----------------------------------------------------------------*
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 * Decoder constant parameters (defined in "cnst.h") *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 *-----------------------------------------------------------------*
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 * L_FRAME : Frame size. *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 * L_SUBFR : Sub-frame size. *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 *-----------------------------------------------------------------*/
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 /*
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 ********************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 * PUBLIC PROGRAM CODE
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 ********************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 /*
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 **************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 * Function : Cb_gain_average_reset
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 * Purpose : Resets state memory
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 **************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 void Cb_gain_average_reset (Cb_gain_averageState *state)
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 /* Static vectors to zero */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 Set_zero (state->cbGainHistory, L_CBGAINHIST);
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 /* Initialize hangover handling */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 state->hangVar = 0;
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 state->hangCount= 0;
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 /*
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 **************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 * Function : Cb_gain_average
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 * Purpose :
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 * Returns : The mix cb gains for MR475, MR515, MR59, MR67, MR102; gain_code other modes
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 **************************************************************************
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 Word16 Cb_gain_average (
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 Cb_gain_averageState *st, /* i/o : State variables for CB gain avergeing */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 enum Mode mode, /* i : AMR mode */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 Word16 gain_code, /* i : CB gain Q1 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 Word16 lsp[], /* i : The LSP for the current frame Q15 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 Word16 lspAver[], /* i : The average of LSP for 8 frames Q15 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 Word16 bfi, /* i : bad frame indication flag */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 Word16 prev_bf, /* i : previous bad frame indication flag */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 Word16 pdfi, /* i : potential degraded bad frame ind flag */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 Word16 prev_pdf, /* i : prev pot. degraded bad frame ind flag */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 Word16 inBackgroundNoise, /* i : background noise decision */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 Word16 voicedHangover /* i : # of frames after last voiced frame */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 )
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 /*---------------------------------------------------------*
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 * Compute mixed cb gain, used to make cb gain more *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 * smooth in background noise for modes 5.15, 5.9 and 6.7 *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 * states that needs to be updated by all *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 *---------------------------------------------------------*/
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 Word16 i;
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 Word16 cbGainMix, diff, tmp_diff, bgMix, cbGainMean;
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 Word32 L_sum;
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 Word16 tmp[M], tmp1, tmp2, shift1, shift2, shift;
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 /* set correct cbGainMix for MR74, MR795, MR122 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 cbGainMix = gain_code; move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 /*-------------------------------------------------------*
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102 * Store list of CB gain needed in the CB gain *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 * averaging *
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 *-------------------------------------------------------*/
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 for (i = 0; i < (L_CBGAINHIST-1); i++)
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 st->cbGainHistory[i] = st->cbGainHistory[i+1]; move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 st->cbGainHistory[L_CBGAINHIST-1] = gain_code; move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 /* compute lsp difference */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112 for (i = 0; i < M; i++) {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 tmp1 = abs_s(sub(lspAver[i], lsp[i])); /* Q15 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114 shift1 = sub(norm_s(tmp1), 1); /* Qn */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115 tmp1 = shl(tmp1, shift1); /* Q15+Qn */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 shift2 = norm_s(lspAver[i]); /* Qm */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 tmp2 = shl(lspAver[i], shift2); /* Q15+Qm */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 tmp[i] = div_s(tmp1, tmp2); /* Q15+(Q15+Qn)-(Q15+Qm) */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 shift = sub(add(2, shift1), shift2);
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 test ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 if (shift >= 0)
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 tmp[i] = shr(tmp[i], shift); move16 (); /* Q15+Qn-Qm-Qx=Q13 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 else
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 tmp[i] = shl(tmp[i], negate(shift)); move16 (); /* Q15+Qn-Qm-Qx=Q13 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 diff = tmp[0]; move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 for (i = 1; i < M; i++) {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 diff = add(diff, tmp[i]); /* Q13 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 /* Compute hangover */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 test ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 if (sub(diff, 5325) > 0) /* 0.65 in Q11 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 st->hangVar = add(st->hangVar, 1);
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 else
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 st->hangVar = 0; move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 test ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 if (sub(st->hangVar, 10) > 0)
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 st->hangCount = 0; /* Speech period, reset hangover variable */ move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 /* Compute mix constant (bgMix) */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 bgMix = 8192; /* 1 in Q13 */ move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 test ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 if ((sub(mode, MR67) <= 0) || (sub(mode, MR102) == 0))
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 /* MR475, MR515, MR59, MR67, MR102 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 /* if errors and presumed noise make smoothing probability stronger */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 test (); test (); test (); test (); test (); test(); test (); test (); test ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 if (((((pdfi != 0) && (prev_pdf != 0)) || (bfi != 0) || (prev_bf != 0)) &&
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 (sub(voicedHangover, 1) > 0) && (inBackgroundNoise != 0) &&
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 ((sub(mode, MR475) == 0) ||
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 (sub(mode, MR515) == 0) ||
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 (sub(mode, MR59) == 0)) ))
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 /* bgMix = min(0.25, max(0.0, diff-0.55)) / 0.25; */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 tmp_diff = sub(diff, 4506); /* 0.55 in Q13 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 /* max(0.0, diff-0.55) */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 test ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 if (tmp_diff > 0)
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 tmp1 = tmp_diff; move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 else
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 tmp1 = 0; move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 /* min(0.25, tmp1) */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 test ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 if (sub(2048, tmp1) < 0)
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 bgMix = 8192; move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 else
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 bgMix = shl(tmp1, 2);
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 else
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 /* bgMix = min(0.25, max(0.0, diff-0.40)) / 0.25; */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 tmp_diff = sub(diff, 3277); /* 0.4 in Q13 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 /* max(0.0, diff-0.40) */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 test ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 if (tmp_diff > 0)
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202 tmp1 = tmp_diff; move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204 else
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 tmp1 = 0; move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 /* min(0.25, tmp1) */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 test ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211 if (sub(2048, tmp1) < 0)
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213 bgMix = 8192; move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 else
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
217 bgMix = shl(tmp1, 2);
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
218 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
219 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
220
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
221 test (); test ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
222 if ((sub(st->hangCount, 40) < 0) || (sub(diff, 5325) > 0)) /* 0.65 in Q13 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
223 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
224 bgMix = 8192; /* disable mix if too short time since */ move16 ();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
225 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
226
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
227 /* Smoothen the cb gain trajectory */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
228 /* smoothing depends on mix constant bgMix */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
229 L_sum = L_mult(6554, st->cbGainHistory[2]); /* 0.2 in Q15; L_sum in Q17 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
230 for (i = 3; i < L_CBGAINHIST; i++)
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
231 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
232 L_sum = L_mac(L_sum, 6554, st->cbGainHistory[i]);
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
233 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
234 cbGainMean = round(L_sum); /* Q1 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
235
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
236 /* more smoothing in error and bg noise (NB no DFI used here) */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
237 test (); test (); test (); test (); test(); test();
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
238 if (((bfi != 0) || (prev_bf != 0)) && (inBackgroundNoise != 0) &&
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
239 ((sub(mode, MR475) == 0) ||
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
240 (sub(mode, MR515) == 0) ||
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
241 (sub(mode, MR59) == 0)) )
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
242 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
243 L_sum = L_mult(4681, st->cbGainHistory[0]); /* 0.143 in Q15; L_sum in Q17 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
244 for (i = 1; i < L_CBGAINHIST; i++)
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
245 {
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
246 L_sum = L_mac(L_sum, 4681, st->cbGainHistory[i]);
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
247 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
248 cbGainMean = round(L_sum); /* Q1 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
249 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
250
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
251 /* cbGainMix = bgMix*cbGainMix + (1-bgMix)*cbGainMean; */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
252 L_sum = L_mult(bgMix, cbGainMix); /* L_sum in Q15 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
253 L_sum = L_mac(L_sum, 8192, cbGainMean);
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
254 L_sum = L_msu(L_sum, bgMix, cbGainMean);
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
255 cbGainMix = round(L_shl(L_sum, 2)); /* Q1 */
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
256 }
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
257
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
258 st->hangCount = add(st->hangCount, 1);
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
259 return cbGainMix;
dc3b7caa59c4 libtwamr: integrate c_g_aver.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
260 }