FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/ph_disp.h @ 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 bde9f5804670
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
390
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ********************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 ********************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : ph_disp.h
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * Purpose : Phase dispersion of excitation signal
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 *
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 ********************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 #ifndef ph_disp_h
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 #define ph_disp_h "$Id $"
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 /*
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 ********************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 * INCLUDE FILES
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 ********************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 #include "tw_amr.h"
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 #include "typedef.h"
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 /*
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 ********************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 * LOCAL VARIABLES AND TABLES
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 ********************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 #define PHDGAINMEMSIZE 5
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 #define PHDTHR1LTP 9830 /* 0.6 in Q14 */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 #define PHDTHR2LTP 14746 /* 0.9 in Q14 */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 #define ONFACTPLUS1 16384 /* 2.0 in Q13 */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 #define ONLENGTH 2
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 /*
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 ********************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 * DEFINITION OF DATA TYPES
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 ********************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 typedef struct {
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 Word16 gainMem[PHDGAINMEMSIZE];
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 Word16 prevState;
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 Word16 prevCbGain;
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 Word16 lockFull;
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 Word16 onset;
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 } ph_dispState;
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 /*
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 ********************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 * DECLARATION OF PROTOTYPES
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 ********************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 /*************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 *
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 * Function: ph_disp_reset
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 * Purpose: Initializes state memory
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 *
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 **************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 void ph_disp_reset (ph_dispState *state);
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 /*************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 *
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 * Function: ph_disp_lock
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 * Purpose: mark phase dispersion as locked in state struct
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 *
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 **************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 void ph_disp_lock (ph_dispState *state);
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 /*************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 *
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 * Function: ph_disp_release
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 * Purpose: mark phase dispersion as unlocked in state struct
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 *
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 **************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 void ph_disp_release (ph_dispState *state);
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 /*************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 *
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 * Function: ph_disp
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 * Purpose: perform phase dispersion according to the specified codec
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 * mode and computes total excitation for synthesis part
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 * if decoder
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 *
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 **************************************************************************
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 void ph_disp (
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 ph_dispState *state, /* i/o : State struct */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 enum Mode mode, /* i : codec mode */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 Word16 x[], /* i/o Q0 : in: LTP excitation signal */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 /* out: total excitation signal */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 Word16 cbGain, /* i Q1 : Codebook gain */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 Word16 ltpGain, /* i Q14 : LTP gain */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 Word16 inno[], /* i Q13 : Innovation vector (Q12 for 12.2) */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100 Word16 pitch_fac, /* i Q14 : pitch factor used to scale the
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 LTP excitation (Q13 for 12.2) */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102 Word16 tmp_shift /* i Q0 : shift factor applied to sum of
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 scaled LTP ex & innov. before
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 rounding */
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 );
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106
bde9f5804670 libtwamr: integrate ph_disp.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 #endif