FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/gain_q.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 ccba5812fa44
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
378
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ********************************************************************************
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 ********************************************************************************
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : gainQuant.h
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * Purpose : Quantazation of gains
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 *
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 ********************************************************************************
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 #ifndef gain_q_h
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 #define gain_q_h "$Id $"
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 /*
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 ********************************************************************************
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 * INCLUDE FILES
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 ********************************************************************************
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 #include "tw_amr.h"
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 #include "typedef.h"
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 #include "gc_pred.h"
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 #include "g_adapt.h"
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 /*
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 ********************************************************************************
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 * DEFINITION OF DATA TYPES
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 ********************************************************************************
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 typedef struct {
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 Word16 sf0_exp_gcode0;
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 Word16 sf0_frac_gcode0;
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 Word16 sf0_exp_target_en;
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 Word16 sf0_frac_target_en;
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 Word16 sf0_exp_coeff[5];
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 Word16 sf0_frac_coeff[5];
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 Word16 *gain_idx_ptr;
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 gc_predState gc_predSt;
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 gc_predState gc_predUnqSt;
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 GainAdaptState adaptSt;
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 } gainQuantState;
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 /*
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 ********************************************************************************
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 * DECLARATION OF PROTOTYPES
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 ********************************************************************************
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 void gainQuant_reset (gainQuantState *st);
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 /* reset of pre processing state (i.e. set state memory to zero)
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 returns 0 on success
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 int gainQuant(
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 gainQuantState *st, /* i/o : State struct */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 enum Mode mode, /* i : coder mode */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 Word16 res[], /* i : LP residual, Q0 */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 Word16 exc[], /* i : LTP excitation (unfiltered), Q0 */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 Word16 code[], /* i : CB innovation (unfiltered), Q13 */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 /* (unsharpened for MR475) */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 Word16 xn[], /* i : Target vector. */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 Word16 xn2[], /* i : Target vector. */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 Word16 y1[], /* i : Adaptive codebook. */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 Word16 Y2[], /* i : Filtered innovative vector. */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 Word16 g_coeff[], /* i : Correlations <xn y1> <y1 y1> */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 /* Compute in G_pitch(). */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 Word16 even_subframe, /* i : even subframe indicator flag */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 Word16 gp_limit, /* i : pitch gain limit */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 Word16 *sf0_gain_pit, /* o : Pitch gain sf 0. MR475 */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 Word16 *sf0_gain_cod, /* o : Code gain sf 0. MR475 */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 Word16 *gain_pit, /* i/o : Pitch gain. */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 Word16 *gain_cod, /* o : Code gain. */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 /* MR475: gain_* unquantized in even */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 /* subframes, quantized otherwise */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 Word16 **anap /* o : Index of quantization */
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 );
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79
ccba5812fa44 libtwamr: integrate gain_q.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 #endif