FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/d_plsf_5.c @ 477:4c9222d95647

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libtwamr encoder: always emit frame->mode = mode; In the original implementation of amr_encode_frame(), the 'mode' member of the output struct was set to 0xFF if the output frame type is TX_NO_DATA. This design was made to mimic the mode field (16-bit word) being set to 0xFFFF (or -1) in 3GPP test sequence format - but nothing actually depends on this struct member being set in any way, and amr_frame_to_tseq() generates the needed 0xFFFF on its own, based on frame->type being equal to TX_NO_DATA. It is simpler and more efficient to always set frame->mode to the actual encoding mode in amr_encode_frame(), and this new behavior has already been documented in doc/AMR-library-API description in anticipation of the present change.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 18 May 2024 22:30:42 +0000
parents 29769a9b89d3
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
345
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 *****************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 *****************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : d_plsf_5.c
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 *
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 *****************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 /*
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 *****************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 * MODULE INCLUDE FILE AND VERSION ID
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 *****************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 #include "namespace.h"
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 #include "d_plsf.h"
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 /*
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 *****************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 * INCLUDE FILES
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 *****************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 #include "typedef.h"
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 #include "basic_op.h"
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 #include "no_count.h"
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 #include "lsp_lsf.h"
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 #include "reorder.h"
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 #include "cnst.h"
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 #include "memops.h"
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 #include "q_plsf5_tab.h"
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 /*
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 *****************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 * LOCAL VARIABLES AND TABLES
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 *****************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 /* ALPHA -> 0.95 */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 /* ONE_ALPHA-> (1.0-ALPHA) */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 #define ALPHA 31128
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 #define ONE_ALPHA 1639
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 /*
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 *--------------------------------------------------*
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 * Constants (defined in cnst.h) *
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 *--------------------------------------------------*
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 * M : LPC order
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 *--------------------------------------------------*
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 /*
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 *****************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 * PUBLIC PROGRAM CODE
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 *****************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 /*
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 **************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 *
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 * Function : D_plsf_5
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 * Purpose : Decodes the 2 sets of LSP parameters in a frame
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 * using the received quantization indices.
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 *
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 **************************************************************************
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 int D_plsf_5 (
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 D_plsfState *st, /* i/o: State variables */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 Word16 bfi, /* i : bad frame indicator (set to 1 if a bad
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 frame is received) */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 Word16 *indice, /* i : quantization indices of 5 submatrices, Q0 */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 Word16 *lsp1_q, /* o : quantized 1st LSP vector (M), Q15 */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 Word16 *lsp2_q /* o : quantized 2nd LSP vector (M), Q15 */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 )
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 {
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 Word16 i;
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 const Word16 *p_dico;
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 Word16 temp, sign;
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 Word16 lsf1_r[M], lsf2_r[M];
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 Word16 lsf1_q[M], lsf2_q[M];
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 test ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 if (bfi != 0) /* if bad frame */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 {
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 /* use the past LSFs slightly shifted towards their mean */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 for (i = 0; i < M; i++)
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 {
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 /* lsfi_q[i] = ALPHA*st->past_lsf_q[i] + ONE_ALPHA*mean_lsf[i]; */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 lsf1_q[i] = add (mult (st->past_lsf_q[i], ALPHA),
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 mult (mean_lsf[i], ONE_ALPHA));
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 lsf2_q[i] = lsf1_q[i]; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 }
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 /* estimate past quantized residual to be used in next frame */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 for (i = 0; i < M; i++)
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 {
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 /* temp = mean_lsf[i] + st->past_r_q[i] * LSP_PRED_FAC_MR122; */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 temp = add (mean_lsf[i], mult (st->past_r_q[i],
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 LSP_PRED_FAC_MR122));
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 st->past_r_q[i] = sub (lsf2_q[i], temp);
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112 }
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 }
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114 else
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115 /* if good LSFs received */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 {
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 /* decode prediction residuals from 5 received indices */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 p_dico = &dico1_lsf[shl (indice[0], 2)];move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 lsf1_r[0] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 lsf1_r[1] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 lsf2_r[0] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 lsf2_r[1] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 p_dico = &dico2_lsf[shl (indice[1], 2)];move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 lsf1_r[2] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 lsf1_r[3] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 lsf2_r[2] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 lsf2_r[3] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 sign = indice[2] & 1; logic16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 i = shr (indice[2], 1);
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 p_dico = &dico3_lsf[shl (i, 2)]; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 test ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 if (sign == 0)
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 {
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 lsf1_r[4] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 lsf1_r[5] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 lsf2_r[4] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 lsf2_r[5] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 }
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 else
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 {
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 lsf1_r[4] = negate (*p_dico++); move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 lsf1_r[5] = negate (*p_dico++); move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 lsf2_r[4] = negate (*p_dico++); move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 lsf2_r[5] = negate (*p_dico++); move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 }
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 p_dico = &dico4_lsf[shl (indice[3], 2)];move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 lsf1_r[6] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 lsf1_r[7] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 lsf2_r[6] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 lsf2_r[7] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 p_dico = &dico5_lsf[shl (indice[4], 2)];move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 lsf1_r[8] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 lsf1_r[9] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 lsf2_r[8] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 lsf2_r[9] = *p_dico++; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 /* Compute quantized LSFs and update the past quantized residual */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 for (i = 0; i < M; i++)
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 {
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 temp = add (mean_lsf[i], mult (st->past_r_q[i],
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 LSP_PRED_FAC_MR122));
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 lsf1_q[i] = add (lsf1_r[i], temp);
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 lsf2_q[i] = add (lsf2_r[i], temp);
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 st->past_r_q[i] = lsf2_r[i]; move16 ();
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 }
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 }
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 /* verification that LSFs have minimum distance of LSF_GAP Hz */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 Reorder_lsf (lsf1_q, LSF_GAP, M);
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 Reorder_lsf (lsf2_q, LSF_GAP, M);
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 Copy (lsf2_q, st->past_lsf_q, M);
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 /* convert LSFs to the cosine domain */
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 Lsf_lsp (lsf1_q, lsp1_q, M);
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 Lsf_lsp (lsf2_q, lsp2_q, M);
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 return 0;
29769a9b89d3 libtwamr: integrate d_plsf_5.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 }