FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/pitch_fr.h @ 536:a3300483ae74

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc/FR1-library-API: document return value from gsmfr_tfo_xfrm_*
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 21 Sep 2024 20:48:58 +0000
parents be8edf9e6bc1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
391
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ********************************************************************************
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 ********************************************************************************
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : pitch_fr.h
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * Purpose : Find the pitch period with 1/3 or 1/6 subsample
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 * : resolution (closed loop).
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 *
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 ********************************************************************************
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 #ifndef pitch_fr_h
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 #define pitch_fr_h "$Id $"
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 /*
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 ********************************************************************************
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 * INCLUDE FILES
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 ********************************************************************************
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 #include "tw_amr.h"
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 #include "typedef.h"
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 /*
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 ********************************************************************************
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 * DEFINITION OF DATA TYPES
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 ********************************************************************************
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 typedef struct {
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 Word16 T0_prev_subframe; /* integer pitch lag of previous sub-frame */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 } Pitch_frState;
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 /*
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 ********************************************************************************
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 * DECLARATION OF PROTOTYPES
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 ********************************************************************************
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 void Pitch_fr_reset (Pitch_frState *st);
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 /* reset of pre processing state (i.e. set state memory to zero)
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 returns 0 on success
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 Word16 Pitch_fr ( /* o : pitch period (integer) */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 Pitch_frState *st, /* i/o : State struct */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 enum Mode mode, /* i : codec mode */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 Word16 T_op[], /* i : open loop pitch lags */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 Word16 exc[], /* i : excitation buffer */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 Word16 xn[], /* i : target vector */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 Word16 h[], /* i : impulse response of synthesis and
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 weighting filters */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 Word16 L_subfr, /* i : Length of subframe */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 Word16 i_subfr, /* i : subframe offset */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 Word16 *pit_frac, /* o : pitch period (fractional) */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 Word16 *resu3, /* o : subsample resolution 1/3 (=1) or 1/6 (=0) */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 Word16 *ana_index /* o : index of encoding */
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 );
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61
be8edf9e6bc1 libtwamr: integrate pitch_fr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 #endif