FreeCalypso > hg > gsm-codec-lib
annotate libtwamr/ec_gains.c @ 449:2af2b5c12268
Library-versions: libtwamr is officially version 1.0.0
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 10 May 2024 01:43:05 +0000 |
parents | 9cbd1b5d061f |
children |
rev | line source |
---|---|
362
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
1 /* |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
2 ******************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
3 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
5 * R99 Version 3.3.0 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
6 * REL-4 Version 4.1.0 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
7 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
8 ******************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
9 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
10 * File : ec_gains.c |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
11 * Purpose: : Error concealment for pitch and codebook gains |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
12 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
13 ******************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
14 */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
15 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
16 /* |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
17 ******************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
18 * MODULE INCLUDE FILE AND VERSION ID |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
19 ******************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
20 */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
21 #include "namespace.h" |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
22 #include "ec_gains.h" |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
23 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
24 /* |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
25 ******************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
26 * INCLUDE FILES |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
27 ******************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
28 */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
29 #include "typedef.h" |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
30 #include "basic_op.h" |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
31 #include "oper_32b.h" |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
32 #include "no_count.h" |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
33 #include "cnst.h" |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
34 #include "gmed_n.h" |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
35 #include "gc_pred.h" |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
36 #include "gains_tab.h" |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
37 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
38 /* |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
39 ******************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
40 * PUBLIC PROGRAM CODE |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
41 ******************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
42 */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
43 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
44 /* |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
45 ************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
46 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
47 * Function : ec_gain_code_reset |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
48 * Purpose : Resets state memory |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
49 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
50 ************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
51 */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
52 void ec_gain_code_reset (ec_gain_codeState *state) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
53 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
54 Word16 i; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
55 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
56 for ( i = 0; i < 5; i++) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
57 state->gbuf[i] = 1; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
58 state->past_gain_code = 0; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
59 state->prev_gc = 1; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
60 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
61 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
62 /* |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
63 ************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
64 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
65 * Function : ec_gain_code |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
66 * Purpose : conceal the codebook gain |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
67 * Call this function only in BFI (instead of normal gain |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
68 * decoding function) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
69 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
70 ************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
71 */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
72 void ec_gain_code ( |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
73 ec_gain_codeState *st, /* i/o : State struct */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
74 gc_predState *pred_state, /* i/o : MA predictor state */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
75 Word16 state, /* i : state of the state machine */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
76 Word16 *gain_code /* o : decoded innovation gain */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
77 ) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
78 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
79 static const Word16 cdown[7] = |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
80 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
81 32767, 32112, 32112, 32112, |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
82 32112, 32112, 22937 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
83 }; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
84 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
85 Word16 tmp; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
86 Word16 qua_ener_MR122; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
87 Word16 qua_ener; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
88 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
89 /* calculate median of last five gain values */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
90 tmp = gmed_n (st->gbuf,5); move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
91 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
92 /* new gain = minimum(median, past_gain) * cdown[state] */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
93 test (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
94 if (sub (tmp, st->past_gain_code) > 0) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
95 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
96 tmp = st->past_gain_code; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
97 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
98 tmp = mult (tmp, cdown[state]); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
99 *gain_code = tmp; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
100 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
101 /* update table of past quantized energies with average of |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
102 * current values |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
103 */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
104 gc_pred_average_limited(pred_state, &qua_ener_MR122, &qua_ener); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
105 gc_pred_update(pred_state, qua_ener_MR122, qua_ener); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
106 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
107 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
108 /* |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
109 ************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
110 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
111 * Function : ec_gain_code_update |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
112 * Purpose : update the codebook gain concealment state; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
113 * limit gain_code if the previous frame was bad |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
114 * Call this function always after decoding (or concealing) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
115 * the gain |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
116 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
117 ************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
118 */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
119 void ec_gain_code_update ( |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
120 ec_gain_codeState *st, /* i/o : State struct */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
121 Word16 bfi, /* i : flag: frame is bad */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
122 Word16 prev_bf, /* i : flag: previous frame was bad */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
123 Word16 *gain_code /* i/o : decoded innovation gain */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
124 ) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
125 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
126 Word16 i; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
127 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
128 /* limit gain_code by previous good gain if previous frame was bad */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
129 test (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
130 if (bfi == 0) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
131 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
132 test (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
133 if (prev_bf != 0) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
134 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
135 test (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
136 if (sub (*gain_code, st->prev_gc) > 0) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
137 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
138 *gain_code = st->prev_gc; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
139 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
140 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
141 st->prev_gc = *gain_code; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
142 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
143 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
144 /* update EC states: previous gain, gain buffer */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
145 st->past_gain_code = *gain_code; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
146 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
147 for (i = 1; i < 5; i++) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
148 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
149 st->gbuf[i - 1] = st->gbuf[i]; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
150 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
151 st->gbuf[4] = *gain_code; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
152 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
153 return; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
154 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
155 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
156 /* |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
157 ************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
158 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
159 * Function: ec_gain_pitch_reset |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
160 * Purpose: Resets state memory |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
161 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
162 ************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
163 */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
164 void ec_gain_pitch_reset (ec_gain_pitchState *state) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
165 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
166 Word16 i; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
167 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
168 for(i = 0; i < 5; i++) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
169 state->pbuf[i] = 1640; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
170 state->past_gain_pit = 0; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
171 state->prev_gp = 16384; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
172 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
173 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
174 /* |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
175 ************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
176 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
177 * Function : ec_gain_pitch |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
178 * Purpose : conceal the pitch gain |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
179 * Call this function only in BFI (instead of normal gain |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
180 * decoding function) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
181 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
182 ************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
183 */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
184 void ec_gain_pitch ( |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
185 ec_gain_pitchState *st, /* i/o : state variables */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
186 Word16 state, /* i : state of the state machine */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
187 Word16 *gain_pitch /* o : pitch gain (Q14) */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
188 ) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
189 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
190 static const Word16 pdown[7] = |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
191 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
192 32767, 32112, 32112, 26214, |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
193 9830, 6553, 6553 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
194 }; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
195 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
196 Word16 tmp; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
197 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
198 /* calculate median of last five gains */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
199 tmp = gmed_n (st->pbuf, 5); move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
200 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
201 /* new gain = minimum(median, past_gain) * pdown[state] */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
202 test (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
203 if (sub (tmp, st->past_gain_pit) > 0) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
204 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
205 tmp = st->past_gain_pit; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
206 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
207 *gain_pitch = mult (tmp, pdown[state]); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
208 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
209 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
210 /* |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
211 ************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
212 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
213 * Function : ec_gain_pitch_update |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
214 * Purpose : update the pitch gain concealment state; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
215 * limit gain_pitch if the previous frame was bad |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
216 * Call this function always after decoding (or concealing) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
217 * the gain |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
218 * |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
219 ************************************************************************** |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
220 */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
221 void ec_gain_pitch_update ( |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
222 ec_gain_pitchState *st, /* i/o : state variables */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
223 Word16 bfi, /* i : flag: frame is bad */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
224 Word16 prev_bf, /* i : flag: previous frame was bad */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
225 Word16 *gain_pitch /* i/o : pitch gain */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
226 ) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
227 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
228 Word16 i; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
229 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
230 test (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
231 if (bfi == 0) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
232 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
233 test (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
234 if (prev_bf != 0) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
235 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
236 test (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
237 if (sub (*gain_pitch, st->prev_gp) > 0) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
238 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
239 *gain_pitch = st->prev_gp; |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
240 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
241 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
242 st->prev_gp = *gain_pitch; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
243 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
244 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
245 st->past_gain_pit = *gain_pitch; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
246 |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
247 test (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
248 if (sub (st->past_gain_pit, 16384) > 0) /* if (st->past_gain_pit > 1.0) */ |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
249 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
250 st->past_gain_pit = 16384; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
251 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
252 for (i = 1; i < 5; i++) |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
253 { |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
254 st->pbuf[i - 1] = st->pbuf[i]; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
255 } |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
256 st->pbuf[4] = st->past_gain_pit; move16 (); |
9cbd1b5d061f
libtwamr: integrate ec_gains.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
257 } |