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 <stdint.h>
38 : #include "options.h"
39 : #ifdef DEBUGGING
40 : #include "debug.h"
41 : #endif
42 : #include "prot.h"
43 : #include "rom_com.h"
44 : #include "rom_dec.h"
45 : #include "wmc_auto.h"
46 :
47 : /*---------------------------------------------------------------------*
48 : * reconfig_decoder_LPD()
49 : *
50 : *
51 : *---------------------------------------------------------------------*/
52 :
53 74370 : void reconfig_decoder_LPD(
54 : Decoder_State *st, /* i/o: decoder state structure */
55 : const int16_t bits_frame, /* i : bit budget */
56 : const int16_t bwidth, /* i : audio bandwidth */
57 : const int32_t total_brate, /* i : total bitrate */
58 : const int16_t L_frame_old /* i : frame length */
59 : )
60 : {
61 : int16_t i;
62 : uint16_t newLen, oldLen;
63 74370 : TCX_LTP_DEC_HANDLE hTcxLtpDec = st->hTcxLtpDec;
64 74370 : TCX_DEC_HANDLE hTcxDec = st->hTcxDec;
65 :
66 74370 : st->bits_frame = bits_frame;
67 :
68 74370 : if ( bwidth == NB )
69 : {
70 0 : st->narrowBand = 1;
71 : }
72 74370 : else if ( bwidth > NB )
73 : {
74 74370 : st->narrowBand = 0;
75 : }
76 :
77 74370 : BITS_ALLOC_init_config_acelp( st->total_brate, st->narrowBand, st->nb_subfr, &( st->acelp_cfg ) );
78 :
79 : /*Configuration of partial copy*/
80 74370 : st->acelp_cfg_rf.mode_index = 1;
81 74370 : st->acelp_cfg_rf.midLpc = 0;
82 74370 : st->acelp_cfg_rf.midLpc_enable = 0;
83 74370 : st->acelp_cfg_rf.pre_emphasis = 0;
84 74370 : st->acelp_cfg_rf.formant_enh = 1;
85 74370 : st->acelp_cfg_rf.formant_tilt = 1;
86 74370 : st->acelp_cfg_rf.voice_tilt = 1;
87 74370 : st->acelp_cfg_rf.formant_enh_num = FORMANT_SHARPENING_G1;
88 74370 : st->acelp_cfg_rf.formant_enh_den = FORMANT_SHARPENING_G2;
89 :
90 74370 : if ( st->element_mode != IVAS_SCE )
91 : {
92 44913 : st->flag_cna = getCnaPresent( st->element_mode, st->element_brate, total_brate, bwidth );
93 : }
94 :
95 : /* TCX-LTP */
96 74370 : if ( hTcxLtpDec != NULL )
97 : {
98 74370 : hTcxLtpDec->tcxltp = getTcxLtp( st->sr_core );
99 : }
100 :
101 : /*Scale TCX for non-active frames to adjust loudness with ACELP*/
102 74370 : if ( st->hTcxCfg != NULL )
103 : {
104 74370 : st->hTcxCfg->na_scale = 1.f;
105 :
106 74370 : if ( bwidth < SWB && !( st->tcxonly ) )
107 : {
108 21213 : for ( i = 0; i < SIZE_SCALE_TABLE_TCX; i++ )
109 : {
110 21213 : if ( ( bwidth == scaleTcxTable[i].bwmode ) &&
111 9567 : ( total_brate >= scaleTcxTable[i].bitrateFrom ) &&
112 9567 : ( total_brate < scaleTcxTable[i].bitrateTo ) )
113 : {
114 1941 : if ( st->rf_flag )
115 : {
116 0 : i--;
117 : }
118 1941 : st->hTcxCfg->na_scale = scaleTcxTable[i].scale;
119 1941 : break;
120 : }
121 : }
122 : }
123 : }
124 :
125 : /*if its not the first frame resample overlap buffer to new sampling rate */
126 74370 : if ( st->ini_frame != 0 )
127 : {
128 55299 : if ( st->hTcxCfg != NULL && st->fscale != st->fscale_old && !( st->element_mode == EVS_MONO && st->last_codec_mode == MODE1 && st->last_core == ACELP_CORE && st->prev_bfi != 0 ) )
129 : /* no resempling is needed here when recovering from mode 1
130 : ACELP PLC, since the buffers are already sampled with the
131 : correct sampling rate in open_decoder_LPD() */
132 : {
133 19557 : newLen = st->hTcxCfg->tcx_mdct_window_length;
134 19557 : oldLen = st->hTcxCfg->tcx_mdct_window_length_old;
135 :
136 19557 : if ( ( st->prev_bfi && st->last_core_bfi == ACELP_CORE ) || st->last_core == ACELP_CORE )
137 : {
138 5541 : newLen = st->L_frame / 2;
139 5541 : oldLen = L_frame_old / 2;
140 : }
141 :
142 19557 : if ( st->hTcxDec != NULL )
143 : {
144 19557 : lerp( st->hTcxDec->old_syn_Overl, st->hTcxDec->old_syn_Overl, newLen, oldLen );
145 19557 : lerp( st->hTcxDec->syn_Overl, st->hTcxDec->syn_Overl, newLen, oldLen );
146 :
147 19557 : if ( st->prev_bfi && st->last_core_bfi == ACELP_CORE )
148 : {
149 294 : lerp( st->hTcxDec->syn_Overl_TDAC, st->hTcxDec->syn_Overl_TDAC, newLen, oldLen );
150 : }
151 : }
152 : }
153 :
154 55299 : if ( st->L_frame <= L_FRAME16k )
155 : {
156 31608 : if ( st->last_L_frame <= L_FRAME16k )
157 : {
158 28254 : if ( st->L_frame != st->last_L_frame )
159 : {
160 1587 : if ( st->L_frame > st->last_L_frame )
161 : {
162 1071 : oldLen = L_SYN_MEM_CLAS_ESTIM * st->last_L_frame / st->L_frame;
163 1071 : newLen = L_SYN_MEM_CLAS_ESTIM;
164 : }
165 : else
166 : {
167 516 : oldLen = L_SYN_MEM_CLAS_ESTIM;
168 516 : newLen = L_SYN_MEM_CLAS_ESTIM * st->L_frame / st->last_L_frame;
169 : }
170 1587 : lerp( &st->mem_syn_clas_estim[L_SYN_MEM_CLAS_ESTIM - oldLen], &st->mem_syn_clas_estim[L_SYN_MEM_CLAS_ESTIM - newLen], newLen, oldLen );
171 : }
172 : }
173 : else
174 : {
175 3354 : set_zero( st->mem_syn_clas_estim, L_SYN_MEM_CLAS_ESTIM );
176 : }
177 : }
178 : }
179 :
180 74370 : if ( st->element_mode > IVAS_SCE )
181 : {
182 44799 : hTcxDec->enableTcxLpc = ( st->numlpc == 1 ) && ( st->lpcQuantization == 1 ) && ( total_brate <= LOWRATE_TCXLPC_MAX_BR_CPE || st->rf_flag );
183 : }
184 : else
185 : {
186 29571 : hTcxDec->enableTcxLpc = ( st->numlpc == 1 ) && ( st->lpcQuantization == 1 ) && ( total_brate <= LOWRATE_TCXLPC_MAX_BR || st->rf_flag );
187 : }
188 :
189 74370 : if ( st->ini_frame == 0 )
190 : {
191 19071 : hTcxDec->envWeighted = 0;
192 : }
193 :
194 74370 : return;
195 : }
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