FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/int_lpc.h @ 585:3c6bf0d26ee7 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
TW-TS-005 reader: fix maximum line length bug TW-TS-005 section 4.1 states: The maximum allowed length of each line is 80 characters, not including the OS-specific newline encoding. The implementation of this line length limit in the TW-TS-005 hex file reader function in the present suite was wrong, such that lines of the full maximum length could not be read. Fix it. Note that this bug affects comment lines too, not just actual RTP payloads. Neither Annex A nor Annex B features an RTP payload format that goes to the maximum of 40 bytes, but if a comment line goes to the maximum allowed length of 80 characters not including the terminating newline, the bug will be triggered, necessitating the present fix.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 25 Feb 2025 07:49:28 +0000
parents 32bc48faec4b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
381
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ********************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 ********************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : int_lpc.h
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * Purpose : Interpolates the LSPs and converts to LPC parameters
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 ********************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 #ifndef int_lpc_h
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 #define int_lpc_h "$Id $"
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 /*
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 ********************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 * INCLUDE FILES
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 ********************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 #include "typedef.h"
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 /*
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 ********************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 * DEFINITION OF DATA TYPES
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 ********************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 /*
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 ********************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 * DECLARATION OF PROTOTYPES
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 ********************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 /*
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 **************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 * Function : Int_lpc_1and3
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 * Purpose : Interpolates the LSPs and converts to LPC parameters
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 * to get a different LP filter in each subframe.
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 * Description : The 20 ms speech frame is divided into 4 subframes.
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 * The LSPs are quantized and transmitted at the 2nd and
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 * 4th subframes (twice per frame) and interpolated at the
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 * 1st and 3rd subframe.
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 * |------|------|------|------|
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 * sf1 sf2 sf3 sf4
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 * F0 Fm F1
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 * sf1: 1/2 Fm + 1/2 F0 sf3: 1/2 F1 + 1/2 Fm
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 * sf2: Fm sf4: F1
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 * Returns : void
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 **************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 void Int_lpc_1and3 (
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 Word16 lsp_old[], /* i : LSP vector at the 4th subfr. of past frame (M) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 Word16 lsp_mid[], /* i : LSP vector at the 2nd subfr. of
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 present frame (M) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 Word16 lsp_new[], /* i : LSP vector at the 4th subfr. of
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 present frame (M) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 Word16 Az[] /* o : interpolated LP parameters in all subfr.
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 (AZ_SIZE) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 );
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 /*
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 **************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 * Function : Int_lpc_1and3_2
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 * Purpose : Interpolation of the LPC parameters. Same as the Int_lpc
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 * function but we do not recompute Az() for subframe 2 and
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 * 4 because it is already available.
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 * Returns : void
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 **************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 void Int_lpc_1and3_2 (
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 Word16 lsp_old[], /* i : LSP vector at the 4th subfr. of past frame (M) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 Word16 lsp_mid[], /* i : LSP vector at the 2nd subframe of
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 present frame (M) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 Word16 lsp_new[], /* i : LSP vector at the 4th subframe of
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 present frame (M) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 Word16 Az[] /* o :interpolated LP parameters
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 in subframes 1 and 3 (AZ_SIZE) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 );
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 /*
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 **************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 * Function : Int_lpc_1to3
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 * Purpose : Interpolates the LSPs and converts to LPC parameters
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 * to get a different LP filter in each subframe.
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 * Description : The 20 ms speech frame is divided into 4 subframes.
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 * The LSPs are quantized and transmitted at the 4th
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 * subframes (once per frame) and interpolated at the
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 * 1st, 2nd and 3rd subframe.
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 * |------|------|------|------|
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100 * sf1 sf2 sf3 sf4
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 * F0 F1
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 * sf1: 3/4 F0 + 1/4 F1 sf3: 1/4 F0 + 3/4 F1
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 * sf2: 1/2 F0 + 1/2 F1 sf4: F1
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 * Returns : void
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 **************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 void Int_lpc_1to3 (
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 Word16 lsp_old[], /* i : LSP vector at the 4th SF of past frame (M) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 Word16 lsp_new[], /* i : LSP vector at the 4th SF of present frame (M) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112 Word16 Az[] /* o : interpolated LP parameters in all SFs (AZ_SIZE) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 );
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115 /*
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 **************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 * Function : Int_lpc_1to3_2
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 * Purpose : Interpolation of the LPC parameters. Same as the Int_lpc
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 * function but we do not recompute Az() for subframe 4
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 * because it is already available.
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 * Returns : void
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 *
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 **************************************************************************
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 void Int_lpc_1to3_2 (
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 Word16 lsp_old[], /* i : LSP vector at the 4th SF of past frame (M) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 Word16 lsp_new[], /* i : LSP vector at the 4th SF present frame (M) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 Word16 Az[] /* o :interpolated LP parameters in SFs 1, 2, 3
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 (AZ_SIZE) */
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 );
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132
32bc48faec4b libtwamr: integrate int_lpc.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 #endif