Line data Source code
1 : /******************************************************************************************************
2 :
3 : (C) 2022-2025 IVAS codec Public Collaboration with portions copyright Dolby International AB, Ericsson AB,
4 : Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Huawei Technologies Co. LTD.,
5 : Koninklijke Philips N.V., Nippon Telegraph and Telephone Corporation, Nokia Technologies Oy, Orange,
6 : Panasonic Holdings Corporation, Qualcomm Technologies, Inc., VoiceAge Corporation, and other
7 : contributors to this repository. All Rights Reserved.
8 :
9 : This software is protected by copyright law and by international treaties.
10 : The IVAS codec Public Collaboration consisting of Dolby International AB, Ericsson AB,
11 : Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Huawei Technologies Co. LTD.,
12 : Koninklijke Philips N.V., Nippon Telegraph and Telephone Corporation, Nokia Technologies Oy, Orange,
13 : Panasonic Holdings Corporation, Qualcomm Technologies, Inc., VoiceAge Corporation, and other
14 : contributors to this repository retain full ownership rights in their respective contributions in
15 : the software. This notice grants no license of any kind, including but not limited to patent
16 : license, nor is any license granted by implication, estoppel or otherwise.
17 :
18 : Contributors are required to enter into the IVAS codec Public Collaboration agreement before making
19 : contributions.
20 :
21 : This software is provided "AS IS", without any express or implied warranties. The software is in the
22 : development stage. It is intended exclusively for experts who have experience with such software and
23 : solely for the purpose of inspection. All implied warranties of non-infringement, merchantability
24 : and fitness for a particular purpose are hereby disclaimed and excluded.
25 :
26 : Any dispute, controversy or claim arising under or in relation to providing this software shall be
27 : submitted to and settled by the final, binding jurisdiction of the courts of Munich, Germany in
28 : accordance with the laws of the Federal Republic of Germany excluding its conflict of law rules and
29 : the United Nations Convention on Contracts on the International Sales of Goods.
30 :
31 : *******************************************************************************************************/
32 :
33 : /*====================================================================================
34 : EVS Codec 3GPP TS26.443 Nov 04, 2021. Version 12.14.0 / 13.10.0 / 14.6.0 / 15.4.0 / 16.3.0
35 : ====================================================================================*/
36 :
37 : #include <assert.h>
38 : #include <stdint.h>
39 : #include "options.h"
40 : #ifdef DEBUGGING
41 : #include "debug.h"
42 : #endif
43 : #include "prot.h"
44 : #include "rom_com.h"
45 : #include "basop_proto_func.h"
46 : #include "wmc_auto.h"
47 :
48 : /*------------------------------------------------------------------*
49 : * lpc_unquantize()
50 : *
51 : *
52 : *------------------------------------------------------------------*/
53 :
54 643110 : void lpc_unquantize(
55 : Decoder_State *st,
56 : float *lsf,
57 : float *lsp,
58 : int16_t *param_lpc,
59 : float *lspmid,
60 : float *lsfmid,
61 : const int16_t coder_type,
62 : int16_t *LSF_Q_prediction /* o : LSF prediction mode */
63 : )
64 : {
65 : int16_t nb_indices, k;
66 :
67 643110 : mvr2r( st->lsf_old, &lsf[0], M );
68 643110 : mvr2r( st->lsp_old, &lsp[0], M );
69 :
70 643110 : nb_indices = 0;
71 643110 : if ( st->lpcQuantization == 0 )
72 : {
73 315900 : nb_indices = dlpc_avq( param_lpc, &lsf[M], st->numlpc, st->sr_core );
74 :
75 637911 : for ( k = 0; k < st->numlpc; k++ )
76 : {
77 322011 : lsf2lsp( &lsf[( k + 1 ) * M], &lsp[( k + 1 ) * M], M, st->sr_core );
78 : }
79 : }
80 327210 : else if ( st->lpcQuantization == 1 )
81 : {
82 327210 : if ( st->sr_core == INT_FS_16k && coder_type == UNVOICED )
83 : {
84 78 : lsf_end_dec( st, GENERIC, 1 - st->narrowBand /* st->bwidth */, ENDLSF_NBITS, &lsf[M], param_lpc, LSF_Q_prediction, &nb_indices, NULL );
85 : }
86 : else
87 : {
88 327132 : if ( st->core == TCX_20_CORE )
89 : {
90 325398 : lsf_end_dec( st, AUDIO, 1 - st->narrowBand /* st->bwidth */, ENDLSF_NBITS, &lsf[M], param_lpc, LSF_Q_prediction, &nb_indices, NULL );
91 : }
92 : else
93 : {
94 1734 : lsf_end_dec( st, coder_type, 1 - st->narrowBand /* st->bwidth */, ENDLSF_NBITS, &lsf[M], param_lpc, LSF_Q_prediction, &nb_indices, NULL );
95 : }
96 : }
97 :
98 327210 : lsf2lsp( &lsf[M], &lsp[M], M, st->sr_core );
99 : }
100 : else
101 : {
102 0 : assert( 0 );
103 : }
104 :
105 643110 : st->seed_acelp = 0;
106 4857702 : for ( k = nb_indices - 1; k >= 0; k-- )
107 : {
108 : /* rightshift before *seed_acelp+param_lpc[i] to avoid overflows*/
109 4214592 : st->seed_acelp = (int16_t) ( ( ( ( st->seed_acelp ) >> 1 ) + param_lpc[k] ) * 31821L + 13849L );
110 : }
111 :
112 : /* Decoded mid-frame lsf */
113 643110 : if ( st->lpcQuantization && st->acelp_cfg.midLpc && st->core == ACELP_CORE && st->rate_switching_reset == 0 )
114 : {
115 990 : midlsf_dec( &lsf[0], &lsf[M], param_lpc[nb_indices], lsfmid, M, coder_type, &( st->mid_lsf_int ), st->prev_bfi, st->safety_net );
116 :
117 990 : reorder_lsf( lsfmid, LSF_GAP_MID, M, st->sr_core );
118 990 : lsf2lsp( lsfmid, lspmid, M, st->sr_core );
119 : }
120 :
121 :
122 643110 : return;
123 : }
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