gsm-codec-lib: libtwamr/dtx

annotate libtwamr/dtx_dec.c @ 553:ebcf414b7d99

doc/TFO-transform: describe details for FRv1, both modes

author	Mychaela Falconia <falcon@freecalypso.org>
date	Mon, 07 Oct 2024 08:24:24 +0000
parents	5a1d18542f8a
children

rev	line source
407 5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1 /*
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	2 *****************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	3 *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	5 * R99 Version 3.3.0
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	6 * REL-4 Version 4.1.0
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	7 *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	8 *****************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	9 *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	10 * File : dtx_dec.c
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	11 * Purpose : Decode comfort noise when in DTX
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	12 *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	13 *****************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	14 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	15 /*
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	16 *****************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	17 * MODULE INCLUDE FILE AND VERSION ID
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	18 *****************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	19 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	20 #include "namespace.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	21 #include "dtx_dec.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	22
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	23 /*
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	24 *****************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	25 * INCLUDE FILES
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	26 *****************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	27 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	28 #include "tw_amr.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	29 #include "typedef.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	30 #include "basic_op.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	31 #include "oper_32b.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	32 #include "memops.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	33 #include "log2.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	34 #include "lsp_az.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	35 #include "pow2.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	36 #include "a_refl.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	37 #include "b_cn_cod.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	38 #include "syn_filt.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	39 #include "lsp_lsf.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	40 #include "reorder.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	41 #include "no_count.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	42 #include "q_plsf5_tab.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	43 #include "lsp_tab.h"
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	44
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	45 /*
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	46 *****************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	47 * LOCAL VARIABLES AND TABLES
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	48 *****************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	49 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	50 #define PN_INITIAL_SEED 0x70816958L /* Pseudo noise generator seed value */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	51
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	52 /***************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	53 * Scaling factors for the lsp variability operation *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	54 ***************************************************/
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	55 static const Word16 lsf_hist_mean_scale[M] = {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	56 20000,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	57 20000,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	58 20000,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	59 20000,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	60 20000,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	61 18000,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	62 16384,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	63 8192,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	64 0,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	65 0
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	66 };
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	67
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	68 /*************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	69 * level adjustment for different modes Q11 *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	70 *************************************************/
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	71 static const Word16 dtx_log_en_adjust[9] =
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	72 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	73 -1023, /* MR475 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	74 -878, /* MR515 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	75 -732, /* MR59 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	76 -586, /* MR67 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	77 -440, /* MR74 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	78 -294, /* MR795 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	79 -148, /* MR102 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	80 0, /* MR122 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	81 0, /* MRDTX */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	82 };
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	83
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	84 /*
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	85 *****************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	86 * PUBLIC PROGRAM CODE
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	87 *****************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	88 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	89
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	90 /*
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	91 **************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	92 *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	93 * Function : dtx_dec_reset
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	94 *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	95 **************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	96 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	97 void dtx_dec_reset (dtx_decState *st)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	98 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	99 int i;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	100
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	101 st->since_last_sid = 0;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	102 st->true_sid_period_inv = (1 << 13);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	103
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	104 st->log_en = 3500;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	105 st->old_log_en = 3500;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	106 /* low level noise for better performance in DTX handover cases*/
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	107
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	108 st->L_pn_seed_rx = PN_INITIAL_SEED;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	109
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	110 /* Initialize state->lsp [] and state->lsp_old [] */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	111 Copy(lsp_init_data, &st->lsp[0], M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	112 Copy(lsp_init_data, &st->lsp_old[0], M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	113
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	114 st->lsf_hist_ptr = 0;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	115 st->log_pg_mean = 0;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	116 st->log_en_hist_ptr = 0;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	117
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	118 /* initialize decoder lsf history */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	119 Copy(mean_lsf, &st->lsf_hist[0], M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	120
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	121 for (i = 1; i < DTX_HIST_SIZE; i++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	122 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	123 Copy(&st->lsf_hist[0], &st->lsf_hist[M*i], M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	124 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	125 Set_zero(st->lsf_hist_mean, M*DTX_HIST_SIZE);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	126
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	127 /* initialize decoder log frame energy */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	128 for (i = 0; i < DTX_HIST_SIZE; i++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	129 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	130 st->log_en_hist[i] = st->log_en;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	131 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	132
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	133 st->log_en_adjust = 0;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	134
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	135 st->dtxHangoverCount = DTX_HANG_CONST;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	136 st->decAnaElapsedCount = 32767;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	137
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	138 st->sid_frame = 0;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	139 st->valid_data = 0;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	140 st->dtxHangoverAdded = 0;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	141
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	142 st->dtxGlobalState = DTX;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	143 st->data_updated = 0;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	144 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	145
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	146 /*
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	147 **************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	148 *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	149 * Function : dtx_dec
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	150 *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	151 **************************************************************************
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	152 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	153 int dtx_dec(
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	154 dtx_decState st, / i/o : State struct */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	155 Word16 mem_syn[], /* i/o : AMR decoder state */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	156 D_plsfState* lsfState, /* i/o : decoder lsf states */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	157 gc_predState* predState, /* i/o : prediction states */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	158 Cb_gain_averageState* averState, /* i/o : CB gain average states */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	159 enum DTXStateType new_state, /* i : new DTX state */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	160 enum Mode mode, /* i : AMR mode */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	161 Word16 parm[], /* i : Vector of synthesis parameters */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	162 Word16 synth[], /* o : synthesised speech */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	163 Word16 A_t[] /* o : decoded LP filter in 4 subframes*/
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	164 )
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	165 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	166 Word16 log_en_index;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	167 Word16 i, j;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	168 Word16 int_fac;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	169 Word32 L_log_en_int;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	170 Word16 lsp_int[M];
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	171 Word16 log_en_int_e;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	172 Word16 log_en_int_m;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	173 Word16 level;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	174 Word16 acoeff[M + 1];
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	175 Word16 refl[M];
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	176 Word16 pred_err;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	177 Word16 ex[L_SUBFR];
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	178 Word16 ma_pred_init;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	179 Word16 log_pg_e, log_pg_m;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	180 Word16 log_pg;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	181 Flag negative;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	182 Word16 lsf_mean;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	183 Word32 L_lsf_mean;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	184 Word16 lsf_variab_index;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	185 Word16 lsf_variab_factor;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	186 Word16 lsf_int[M];
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	187 Word16 lsf_int_variab[M];
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	188 Word16 lsp_int_variab[M];
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	189 Word16 acoeff_variab[M + 1];
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	190
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	191 Word16 lsf[M];
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	192 Word32 L_lsf[M];
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	193 Word16 ptr;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	194 Word16 tmp_int_length;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	195
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	196
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	197 /* This function is called if synthesis state is not SPEECH
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	198 * the globally passed inputs to this function are
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	199 * st->sid_frame
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	200 * st->valid_data
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	201 * st->dtxHangoverAdded
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	202 * new_state (SPEECH, DTX, DTX_MUTE)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	203 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	204
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	205 test(); test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	206 if ((st->dtxHangoverAdded != 0) &&
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	207 (st->sid_frame != 0))
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	208 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	209 /* sid_first after dtx hangover period */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	210 /* or sid_upd after dtxhangover */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	211
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	212 /* set log_en_adjust to correct value */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	213 st->log_en_adjust = dtx_log_en_adjust[mode];
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	214
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	215 ptr = add(st->lsf_hist_ptr, M); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	216 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	217 if (sub(ptr, 80) == 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	218 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	219 ptr = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	220 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	221 Copy( &st->lsf_hist[st->lsf_hist_ptr],&st->lsf_hist[ptr],M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	222
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	223 ptr = add(st->log_en_hist_ptr,1); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	224 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	225 if (sub(ptr, DTX_HIST_SIZE) == 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	226 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	227 ptr = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	228 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	229 move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	230 st->log_en_hist[ptr] = st->log_en_hist[st->log_en_hist_ptr]; /* Q11 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	231
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	232 /* compute mean log energy and lsp *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	233 * from decoded signal (SID_FIRST) */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	234 st->log_en = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	235 for (i = 0; i < M; i++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	236 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	237 L_lsf[i] = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	238 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	239
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	240 /* average energy and lsp */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	241 for (i = 0; i < DTX_HIST_SIZE; i++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	242 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	243 st->log_en = add(st->log_en,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	244 shr(st->log_en_hist[i],3));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	245 for (j = 0; j < M; j++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	246 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	247 L_lsf[j] = L_add(L_lsf[j],
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	248 L_deposit_l(st->lsf_hist[i * M + j]));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	249 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	250 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	251
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	252 for (j = 0; j < M; j++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	253 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	254 lsf[j] = extract_l(L_shr(L_lsf[j],3)); /* divide by 8 */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	255 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	256
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	257 Lsf_lsp(lsf, st->lsp, M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	258
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	259 /* make log_en speech coder mode independent */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	260 /* added again later before synthesis */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	261 st->log_en = sub(st->log_en, st->log_en_adjust);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	262
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	263 /* compute lsf variability vector */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	264 Copy(st->lsf_hist, st->lsf_hist_mean, 80);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	265
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	266 for (i = 0; i < M; i++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	267 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	268 L_lsf_mean = 0; move32();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	269 /* compute mean lsf */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	270 for (j = 0; j < 8; j++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	271 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	272 L_lsf_mean = L_add(L_lsf_mean,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	273 L_deposit_l(st->lsf_hist_mean[i+j*M]));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	274 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	275
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	276 lsf_mean = extract_l(L_shr(L_lsf_mean, 3)); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	277 /* subtract mean and limit to within reasonable limits *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	278 * moreover the upper lsf's are attenuated */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	279 for (j = 0; j < 8; j++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	280 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	281 /* subtract mean */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	282 st->lsf_hist_mean[i+j*M] =
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	283 sub(st->lsf_hist_mean[i+j*M], lsf_mean);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	284
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	285 /* attenuate deviation from mean, especially for upper lsf's */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	286 st->lsf_hist_mean[i+j*M] =
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	287 mult(st->lsf_hist_mean[i+j*M], lsf_hist_mean_scale[i]);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	288
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	289 /* limit the deviation */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	290 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	291 if (st->lsf_hist_mean[i+j*M] < 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	292 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	293 negative = 1; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	294 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	295 else
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	296 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	297 negative = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	298 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	299 st->lsf_hist_mean[i+jM] = abs_s(st->lsf_hist_mean[i+jM]);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	300
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	301 /* apply soft limit */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	302 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	303 if (sub(st->lsf_hist_mean[i+j*M], 655) > 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	304 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	305 st->lsf_hist_mean[i+j*M] =
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	306 add(655, shr(sub(st->lsf_hist_mean[i+j*M], 655), 2));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	307 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	308
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	309 /* apply hard limit */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	310 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	311 if (sub(st->lsf_hist_mean[i+j*M], 1310) > 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	312 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	313 st->lsf_hist_mean[i+j*M] = 1310; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	314 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	315 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	316 if (negative != 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	317 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	318 st->lsf_hist_mean[i+jM] = -st->lsf_hist_mean[i+jM];move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	319 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	320
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	321 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	322 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	323 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	324
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	325 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	326 if (st->sid_frame != 0 )
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	327 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	328 /* Set old SID parameters, always shift */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	329 /* even if there is no new valid_data */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	330 Copy(st->lsp, st->lsp_old, M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	331 st->old_log_en = st->log_en; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	332
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	333 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	334 if (st->valid_data != 0 ) /* new data available (no CRC) */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	335 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	336 /* Compute interpolation factor, since the division only works *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	337 * for values of since_last_sid < 32 we have to limit the *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	338 * interpolation to 32 frames */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	339 tmp_int_length = st->since_last_sid; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	340 st->since_last_sid = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	341
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	342 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	343 if (sub(tmp_int_length, 32) > 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	344 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	345 tmp_int_length = 32; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	346 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	347 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	348 if (sub(tmp_int_length, 2) >= 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	349 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	350 move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	351 st->true_sid_period_inv = div_s(1 << 10, shl(tmp_int_length, 10));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	352 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	353 else
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	354 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	355 st->true_sid_period_inv = 1 << 14; /* 0.5 it Q15 */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	356 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	357
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	358 Init_D_plsf_3(lsfState, parm[0]); /* temporay initialization */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	359 D_plsf_3(lsfState, MRDTX, 0, &parm[1], st->lsp);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	360 Set_zero(lsfState->past_r_q, M); /* reset for next speech frame */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	361
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	362 log_en_index = parm[4]; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	363 /* Q11 and divide by 4 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	364 st->log_en = shl(log_en_index, (11 - 2)); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	365
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	366 /* Subtract 2.5 in Q11 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	367 st->log_en = sub(st->log_en, (2560 * 2));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	368
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	369 /* Index 0 is reserved for silence */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	370 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	371 if (log_en_index == 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	372 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	373 st->log_en = MIN_16; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	374 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	375
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	376 /* no interpolation at startup after coder reset */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	377 /* or when SID_UPD has been received right after SPEECH */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	378 test(); test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	379 if ((st->data_updated == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	380 (sub(st->dtxGlobalState, SPEECH) == 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	381 )
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	382 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	383 Copy(st->lsp, st->lsp_old, M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	384 st->old_log_en = st->log_en; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	385 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	386 } /* endif valid_data */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	387
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	388 /* initialize gain predictor memory of other modes */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	389 ma_pred_init = sub(shr(st->log_en,1), 9000); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	390 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	391 if (ma_pred_init > 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	392 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	393 ma_pred_init = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	394 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	395 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	396 if (sub(ma_pred_init, -14436) < 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	397 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	398 ma_pred_init = -14436; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	399 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	400
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	401 predState->past_qua_en[0] = ma_pred_init; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	402 predState->past_qua_en[1] = ma_pred_init; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	403 predState->past_qua_en[2] = ma_pred_init; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	404 predState->past_qua_en[3] = ma_pred_init; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	405
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	406 /* past_qua_en for other modes than MR122 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	407 ma_pred_init = mult(5443, ma_pred_init);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	408 /* scale down by factor 20log10(2) in Q15 /
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	409 predState->past_qua_en_MR122[0] = ma_pred_init; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	410 predState->past_qua_en_MR122[1] = ma_pred_init; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	411 predState->past_qua_en_MR122[2] = ma_pred_init; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	412 predState->past_qua_en_MR122[3] = ma_pred_init; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	413 } /* endif sid_frame */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	414
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	415 /* CN generation */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	416 /* recompute level adjustment factor Q11 *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	417 * st->log_en_adjust = 0.9st->log_en_adjust +
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	418 * 0.1dtx_log_en_adjust[mode]); /
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	419 move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	420 st->log_en_adjust = add(mult(st->log_en_adjust, 29491),
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	421 shr(mult(shl(dtx_log_en_adjust[mode],5),3277),5));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	422
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	423 /* Interpolate SID info */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	424 int_fac = shl(add(1,st->since_last_sid), 10); /* Q10 */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	425 int_fac = mult(int_fac, st->true_sid_period_inv); /* Q10 * Q15 -> Q10 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	426
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	427 /* Maximize to 1.0 in Q10 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	428 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	429 if (sub(int_fac, 1024) > 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	430 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	431 int_fac = 1024; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	432 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	433 int_fac = shl(int_fac, 4); /* Q10 -> Q14 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	434
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	435 L_log_en_int = L_mult(int_fac, st->log_en); /* Q14 * Q11->Q26 */ move32();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	436 for(i = 0; i < M; i++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	437 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	438 lsp_int[i] = mult(int_fac, st->lsp[i]);/* Q14 * Q15 -> Q14 */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	439 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	440
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	441 int_fac = sub(16384, int_fac); /* 1-k in Q14 */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	442
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	443 /* (Q14 * Q11 -> Q26) + Q26 -> Q26 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	444 L_log_en_int = L_mac(L_log_en_int, int_fac, st->old_log_en);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	445 for(i = 0; i < M; i++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	446 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	447 /* Q14 + (Q14 * Q15 -> Q14) -> Q14 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	448 lsp_int[i] = add(lsp_int[i], mult(int_fac, st->lsp_old[i])); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	449 lsp_int[i] = shl(lsp_int[i], 1); /* Q14 -> Q15 */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	450 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	451
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	452 /* compute the amount of lsf variability */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	453 lsf_variab_factor = sub(st->log_pg_mean,2457); /* -0.6 in Q12 */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	454 /* 0.3 Q12Q15 -> Q12 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	455 lsf_variab_factor = sub(4096, mult(lsf_variab_factor, 9830));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	456
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	457 /* limit to values between 0..1 in Q12 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	458 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	459 if (sub(lsf_variab_factor, 4096) > 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	460 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	461 lsf_variab_factor = 4096; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	462 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	463 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	464 if (lsf_variab_factor < 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	465 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	466 lsf_variab_factor = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	467 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	468 lsf_variab_factor = shl(lsf_variab_factor, 3); /* -> Q15 */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	469
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	470 /* get index of vector to do variability with */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	471 lsf_variab_index = pseudonoise(&st->L_pn_seed_rx, 3); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	472
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	473 /* convert to lsf */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	474 Lsp_lsf(lsp_int, lsf_int, M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	475
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	476 /* apply lsf variability */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	477 Copy(lsf_int, lsf_int_variab, M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	478 for(i = 0; i < M; i++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	479 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	480 move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	481 lsf_int_variab[i] = add(lsf_int_variab[i],
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	482 mult(lsf_variab_factor,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	483 st->lsf_hist_mean[i+lsf_variab_index*M]));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	484 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	485
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	486 /* make sure that LSP's are ordered */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	487 Reorder_lsf(lsf_int, LSF_GAP, M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	488 Reorder_lsf(lsf_int_variab, LSF_GAP, M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	489
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	490 /* copy lsf to speech decoders lsf state */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	491 Copy(lsf_int, lsfState->past_lsf_q, M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	492
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	493 /* convert to lsp */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	494 Lsf_lsp(lsf_int, lsp_int, M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	495 Lsf_lsp(lsf_int_variab, lsp_int_variab, M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	496
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	497 /* Compute acoeffs Q12 acoeff is used for level *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	498 * normalization and postfilter, acoeff_variab is *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	499 * used for synthesis filter *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	500 * by doing this we make sure that the level *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	501 * in high frequenncies does not jump up and down */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	502
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	503 Lsp_Az(lsp_int, acoeff);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	504 Lsp_Az(lsp_int_variab, acoeff_variab);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	505
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	506 /* For use in postfilter */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	507 Copy(acoeff, &A_t[0], M + 1);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	508 Copy(acoeff, &A_t[M + 1], M + 1);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	509 Copy(acoeff, &A_t[2 * (M + 1)], M + 1);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	510 Copy(acoeff, &A_t[3 * (M + 1)], M + 1);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	511
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	512 /* Compute reflection coefficients Q15 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	513 A_Refl(&acoeff[1], refl);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	514
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	515 /* Compute prediction error in Q15 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	516 pred_err = MAX_16; /* 0.99997 in Q15 */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	517 for (i = 0; i < M; i++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	518 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	519 pred_err = mult(pred_err, sub(MAX_16, mult(refl[i], refl[i])));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	520 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	521
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	522 /* compute logarithm of prediction gain */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	523 Log2(L_deposit_l(pred_err), &log_pg_e, &log_pg_m);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	524
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	525 /* convert exponent and mantissa to Word16 Q12 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	526 log_pg = shl(sub(log_pg_e,15), 12); /* Q12 */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	527 log_pg = shr(sub(0,add(log_pg, shr(log_pg_m, 15-12))), 1); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	528 st->log_pg_mean = add(mult(29491,st->log_pg_mean),
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	529 mult(3277, log_pg)); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	530
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	531 /* Compute interpolated log energy */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	532 L_log_en_int = L_shr(L_log_en_int, 10); /* Q26 -> Q16 */ move32();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	533
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	534 /* Add 4 in Q16 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	535 L_log_en_int = L_add(L_log_en_int, 4 * 65536L); move32();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	536
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	537 /* subtract prediction gain */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	538 L_log_en_int = L_sub(L_log_en_int, L_shl(L_deposit_l(log_pg), 4));move32();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	539
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	540 /* adjust level to speech coder mode */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	541 L_log_en_int = L_add(L_log_en_int,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	542 L_shl(L_deposit_l(st->log_en_adjust), 5)); move32();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	543
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	544 log_en_int_e = extract_h(L_log_en_int); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	545 move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	546 log_en_int_m = extract_l(L_shr(L_sub(L_log_en_int,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	547 L_deposit_h(log_en_int_e)), 1));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	548 level = extract_l(Pow2(log_en_int_e, log_en_int_m)); /* Q4 */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	549
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	550 for (i = 0; i < 4; i++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	551 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	552 /* Compute innovation vector */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	553 build_CN_code(&st->L_pn_seed_rx, ex);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	554 for (j = 0; j < L_SUBFR; j++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	555 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	556 ex[j] = mult(level, ex[j]); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	557 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	558 /* Synthesize */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	559 Syn_filt(acoeff_variab, ex, &synth[i * L_SUBFR], L_SUBFR,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	560 mem_syn, 1);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	561
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	562 } /* next i */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	563
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	564 /* reset codebook averaging variables */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	565 averState->hangVar = 20; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	566 averState->hangCount = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	567
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	568 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	569 if (sub(new_state, DTX_MUTE) == 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	570 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	571 /* mute comfort noise as it has been quite a long time since
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	572 * last SID update was performed */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	573
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	574 tmp_int_length = st->since_last_sid; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	575 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	576 if (sub(tmp_int_length, 32) > 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	577 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	578 tmp_int_length = 32; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	579 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	580
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	581 /* safety guard against division by zero */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	582 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	583 if(tmp_int_length <= 0) {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	584 tmp_int_length = 8; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	585 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	586
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	587 move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	588 st->true_sid_period_inv = div_s(1 << 10, shl(tmp_int_length, 10));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	589
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	590 st->since_last_sid = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	591 Copy(st->lsp, st->lsp_old, M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	592 st->old_log_en = st->log_en; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	593 /* subtract 1/8 in Q11 i.e -6/8 dB */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	594 st->log_en = sub(st->log_en, 256); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	595 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	596
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	597 /* reset interpolation length timer
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	598 * if data has been updated. */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	599 test(); test(); test(); test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	600 if ((st->sid_frame != 0) &&
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	601 ((st->valid_data != 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	602 ((st->valid_data == 0) && (st->dtxHangoverAdded) != 0)))
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	603 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	604 st->since_last_sid = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	605 st->data_updated = 1; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	606 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	607
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	608 return 0;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	609 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	610
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	611 void dtx_dec_activity_update(dtx_decState *st,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	612 Word16 lsf[],
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	613 Word16 frame[])
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	614 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	615 Word16 i;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	616
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	617 Word32 L_frame_en;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	618 Word16 log_en_e, log_en_m, log_en;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	619
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	620 /* update lsp history */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	621 st->lsf_hist_ptr = add(st->lsf_hist_ptr,M); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	622 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	623 if (sub(st->lsf_hist_ptr, 80) == 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	624 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	625 st->lsf_hist_ptr = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	626 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	627 Copy(lsf, &st->lsf_hist[st->lsf_hist_ptr], M);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	628
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	629 /* compute log energy based on frame energy */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	630 L_frame_en = 0; /* Q0 */ move32();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	631 for (i=0; i < L_FRAME; i++)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	632 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	633 L_frame_en = L_mac(L_frame_en, frame[i], frame[i]);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	634 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	635 Log2(L_frame_en, &log_en_e, &log_en_m);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	636
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	637 /* convert exponent and mantissa to Word16 Q10 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	638 log_en = shl(log_en_e, 10); /* Q10 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	639 log_en = add(log_en, shr(log_en_m, 15-10));
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	640
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	641 /* divide with L_FRAME i.e subtract with log2(L_FRAME) = 7.32193 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	642 log_en = sub(log_en, 7497+1024);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	643
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	644 /* insert into log energy buffer, no division by two as *
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	645 * log_en in decoder is Q11 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	646 st->log_en_hist_ptr = add(st->log_en_hist_ptr, 1);
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	647 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	648 if (sub(st->log_en_hist_ptr, DTX_HIST_SIZE) == 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	649 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	650 st->log_en_hist_ptr = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	651 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	652 st->log_en_hist[st->log_en_hist_ptr] = log_en; /* Q11 */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	653 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	654
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	655 /*
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	656 Table of new SPD synthesis states
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	657
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	658 \| previous SPD_synthesis_state
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	659 Incoming \|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	660 frame_type \| SPEECH \| DTX \| DTX_MUTE
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	661 ---------------------------------------------------------------
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	662 RX_SPEECH_GOOD , \| \| \|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	663 RX_SPEECH_PR_DEGRADED \| SPEECH \| SPEECH \| SPEECH
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	664 ----------------------------------------------------------------
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	665 RX_SPEECH_BAD, \| SPEECH \| DTX \| DTX_MUTE
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	666 ----------------------------------------------------------------
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	667 RX_SID_FIRST, \| DTX \| DTX/(DTX_MUTE)\| DTX_MUTE
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	668 ----------------------------------------------------------------
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	669 RX_SID_UPDATE, \| DTX \| DTX \| DTX
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	670 ----------------------------------------------------------------
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	671 RX_SID_BAD, \| DTX \| DTX/(DTX_MUTE)\| DTX_MUTE
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	672 ----------------------------------------------------------------
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	673 RX_NO_DATA \| SPEECH \| DTX/(DTX_MUTE)\| DTX_MUTE
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	674 \|(class2 garb.)\| \|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	675 ----------------------------------------------------------------
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	676 RX_ONSET \| SPEECH \| DTX/(DTX_MUTE)\| DTX_MUTE
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	677 \|(class2 garb.)\| \|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	678 ----------------------------------------------------------------
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	679 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	680
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	681 enum DTXStateType rx_dtx_handler(
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	682 dtx_decState st, / i/o : State struct */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	683 enum RXFrameType frame_type /* i : Frame type */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	684 )
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	685 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	686 enum DTXStateType newState;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	687 enum DTXStateType encState;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	688
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	689 /* DTX if SID frame or previously in DTX{_MUTE} and (NO_RX OR BAD_SPEECH) */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	690 test(); test(); test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	691 test(); test(); test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	692 test(); test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	693 if ((sub(frame_type, RX_SID_FIRST) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	694 (sub(frame_type, RX_SID_UPDATE) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	695 (sub(frame_type, RX_SID_BAD) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	696 (((sub(st->dtxGlobalState, DTX) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	697 (sub(st->dtxGlobalState, DTX_MUTE) == 0)) &&
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	698 ((sub(frame_type, RX_NO_DATA) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	699 (sub(frame_type, RX_SPEECH_BAD) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	700 (sub(frame_type, RX_ONSET) == 0))))
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	701 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	702 newState = DTX; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	703
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	704 /* stay in mute for these input types */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	705 test(); test(); test(); test(); test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	706 if ((sub(st->dtxGlobalState, DTX_MUTE) == 0) &&
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	707 ((sub(frame_type, RX_SID_BAD) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	708 (sub(frame_type, RX_SID_FIRST) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	709 (sub(frame_type, RX_ONSET) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	710 (sub(frame_type, RX_NO_DATA) == 0)))
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	711 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	712 newState = DTX_MUTE; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	713 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	714
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	715 /* evaluate if noise parameters are too old */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	716 /* since_last_sid is reset when CN parameters have been updated */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	717 st->since_last_sid = add(st->since_last_sid, 1); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	718
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	719 /* no update of sid parameters in DTX for a long while */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	720 /* Due to the delayed update of st->since_last_sid counter
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	721 SID_UPDATE frames need to be handled separately to avoid
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	722 entering DTX_MUTE for late SID_UPDATE frames
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	723 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	724 test(); test(); logic16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	725 if((sub(frame_type, RX_SID_UPDATE) != 0) &&
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	726 (sub(st->since_last_sid, DTX_MAX_EMPTY_THRESH) > 0))
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	727 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	728 newState = DTX_MUTE; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	729 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	730 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	731 else
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	732 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	733 newState = SPEECH; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	734 st->since_last_sid = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	735 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	736
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	737 /*
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	738 reset the decAnaElapsed Counter when receiving CNI data the first
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	739 time, to robustify counter missmatch after handover
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	740 this might delay the bwd CNI analysis in the new decoder slightly.
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	741 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	742 test(); test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	743 if ((st->data_updated == 0) &&
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	744 (sub(frame_type, RX_SID_UPDATE) == 0))
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	745 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	746 st->decAnaElapsedCount = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	747 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	748
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	749 /* update the SPE-SPD DTX hangover synchronization */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	750 /* to know when SPE has added dtx hangover */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	751 st->decAnaElapsedCount = add(st->decAnaElapsedCount, 1); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	752 st->dtxHangoverAdded = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	753
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	754 test(); test(); test(); test(); test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	755 if ((sub(frame_type, RX_SID_FIRST) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	756 (sub(frame_type, RX_SID_UPDATE) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	757 (sub(frame_type, RX_SID_BAD) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	758 (sub(frame_type, RX_ONSET) == 0) \|\|
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	759 (sub(frame_type, RX_NO_DATA) == 0))
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	760 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	761 encState = DTX; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	762
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	763 /*
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	764 In frame errors simulations RX_NO_DATA may occasionally mean that
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	765 a speech packet was probably sent by the encoder,
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	766 the assumed _encoder_ state should be SPEECH in such cases.
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	767 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	768
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	769 test(); logic16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	770 if((sub(frame_type, RX_NO_DATA) == 0) &&
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	771 (sub(newState, SPEECH) == 0))
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	772 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	773 encState = SPEECH; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	774 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	775
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	776
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	777 /* Note on RX_ONSET operation differing from RX_NO_DATA operation:
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	778 If a RX_ONSET is received in the decoder (by "accident")
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	779 it is still most likely that the encoder state
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	780 for the "ONSET frame" was DTX.
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	781 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	782 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	783 else
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	784 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	785 encState = SPEECH; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	786 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	787
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	788 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	789 if (sub(encState, SPEECH) == 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	790 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	791 st->dtxHangoverCount = DTX_HANG_CONST; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	792 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	793 else
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	794 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	795 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	796 if (sub(st->decAnaElapsedCount, DTX_ELAPSED_FRAMES_THRESH) > 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	797 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	798 st->dtxHangoverAdded = 1; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	799 st->decAnaElapsedCount = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	800 st->dtxHangoverCount = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	801 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	802 else if (test(), st->dtxHangoverCount == 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	803 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	804 st->decAnaElapsedCount = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	805 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	806 else
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	807 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	808 st->dtxHangoverCount = sub(st->dtxHangoverCount, 1); move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	809 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	810 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	811
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	812 if (sub(newState, SPEECH) != 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	813 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	814 /* DTX or DTX_MUTE
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	815 * CN data is not in a first SID, first SIDs are marked as SID_BAD
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	816 * but will do backwards analysis if a hangover period has been added
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	817 * according to the state machine above
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	818 */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	819
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	820 st->sid_frame = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	821 st->valid_data = 0; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	822
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	823 test();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	824 if (sub(frame_type, RX_SID_FIRST) == 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	825 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	826 st->sid_frame = 1; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	827 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	828 else if (test(), sub(frame_type, RX_SID_UPDATE) == 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	829 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	830 st->sid_frame = 1; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	831 st->valid_data = 1; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	832 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	833 else if (test(), sub(frame_type, RX_SID_BAD) == 0)
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	834 {
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	835 st->sid_frame = 1; move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	836 st->dtxHangoverAdded = 0; /* use old data */ move16();
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	837 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	838 }
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	839
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	840 return newState;
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	841 /* newState is used by both SPEECH AND DTX synthesis routines */
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	842 }

FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/dtx_dec.c @ 553:ebcf414b7d99