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 "wmc_auto.h"
46 :
47 : /*-------------------------------------------------------------*
48 : * mode_switch_decoder_LPD()
49 : *
50 : *
51 : *-------------------------------------------------------------*/
52 :
53 74370 : void mode_switch_decoder_LPD(
54 : Decoder_State *st, /* i/o: decoder state structure */
55 : const int16_t bwidth, /* i : audio bandwidth */
56 : const int32_t total_brate, /* i : total bitrate */
57 : const int32_t last_total_brate, /* i : last frame total bitrate */
58 : const int16_t frame_size_index, /* i : index determining the frame size */
59 : const int16_t MCT_flag, /* i : hMCT handle allocated (1) or not (0)*/
60 : const int16_t last_element_mode /* i : last element mode */
61 : )
62 : {
63 : int16_t fscale, switchWB;
64 : int32_t sr_core;
65 : int16_t bSwitchFromAmrwbIO;
66 : int16_t frame_size;
67 74370 : TCX_DEC_HANDLE hTcxDec = st->hTcxDec;
68 :
69 74370 : switchWB = 0;
70 74370 : bSwitchFromAmrwbIO = 0;
71 74370 : if ( st->last_core == AMR_WB_CORE )
72 : {
73 0 : bSwitchFromAmrwbIO = 1;
74 : }
75 74370 : sr_core = getCoreSamplerateMode2( st->element_mode, total_brate, bwidth, st->flag_ACELP16k, st->rf_flag, st->is_ism_format );
76 74370 : fscale = sr2fscale( sr_core );
77 :
78 : /* set number of coded lines */
79 74370 : st->hTcxCfg->tcx_coded_lines = getNumTcxCodedLines( bwidth );
80 :
81 74370 : if ( ( bwidth >= WB ) && ( fscale == ( FSCALE_DENOM * 16000 ) / 12800 ) && ( fscale == st->fscale ) )
82 : {
83 18912 : if ( ( ( total_brate > ACELP_32k ) && ( st->tcxonly == 0 ) ) || ( ( total_brate <= ACELP_32k ) && ( st->tcxonly == 1 ) ) )
84 : {
85 2997 : switchWB = 1;
86 : }
87 : }
88 :
89 74370 : if ( st->last_L_frame > L_FRAME16k && total_brate <= ACELP_32k )
90 : {
91 1536 : switchWB = 1; /*force init when coming from MODE1*/
92 : }
93 :
94 74370 : st->igf = getIgfPresent( st->element_mode, total_brate, bwidth, st->rf_flag );
95 :
96 74370 : if ( st->hIGFDec != NULL )
97 : {
98 74370 : st->hIGFDec->infoIGFStopFreq = -1;
99 : }
100 :
101 74370 : if ( st->igf && ( st->idchan == 0 || st->element_mode == IVAS_CPE_MDCT ) )
102 : {
103 : /* switch IGF configuration */
104 59676 : IGFDecSetMode( st->hIGFDec, total_brate, bwidth, st->element_mode, -1, -1, st->rf_flag );
105 : }
106 :
107 74370 : if ( fscale != st->fscale || switchWB || bSwitchFromAmrwbIO || st->last_codec_mode == MODE1 || st->force_lpd_reset )
108 : {
109 74370 : open_decoder_LPD( st, total_brate, last_total_brate, bwidth, MCT_flag, last_element_mode, 0 );
110 : }
111 : else
112 : {
113 0 : assert( fscale > ( FSCALE_DENOM / 2 ) );
114 0 : st->fscale_old = st->fscale;
115 0 : st->fscale = fscale;
116 0 : st->L_frame = (int16_t) ( st->sr_core / FRAMES_PER_SEC );
117 0 : if ( st->hTcxDec != NULL )
118 : {
119 0 : st->hTcxDec->L_frameTCX = (int16_t) ( st->output_Fs / FRAMES_PER_SEC );
120 : }
121 :
122 0 : if ( st->hTcxCfg != NULL )
123 : {
124 0 : st->hTcxCfg->ctx_hm = getCtxHm( st->element_mode, total_brate, st->rf_flag );
125 0 : st->hTcxCfg->resq = getResq( total_brate );
126 : }
127 :
128 0 : hTcxDec->tcx_lpc_shaped_ari = getTcxLpcShapedAri( total_brate, st->rf_flag, st->element_mode );
129 :
130 0 : if ( bwidth == NB )
131 : {
132 0 : st->narrowBand = 1;
133 : }
134 : else
135 : {
136 0 : st->narrowBand = 0;
137 : }
138 0 : st->TcxBandwidth = getTcxBandwidth( bwidth );
139 :
140 0 : if ( st->hTcxCfg != NULL )
141 : {
142 0 : st->hTcxCfg->pCurrentTnsConfig = NULL;
143 0 : st->hTcxCfg->fIsTNSAllowed = getTnsAllowed( total_brate, st->igf, st->element_mode );
144 : }
145 :
146 0 : if ( st->hTcxCfg->fIsTNSAllowed && st->hIGFDec != NULL && st->hTcxCfg != NULL )
147 : {
148 0 : InitTnsConfigs( bwidth, st->hTcxCfg->tcx_coded_lines, st->hTcxCfg->tnsConfig, st->hIGFDec->infoIGFStopFreq, total_brate, st->element_mode, MCT_flag );
149 :
150 0 : SetAllowTnsOnWhite( st->hTcxCfg->tnsConfig, st->element_mode == IVAS_CPE_MDCT );
151 : }
152 : }
153 :
154 74370 : frame_size = FrameSizeConfig[frame_size_index].frame_net_bits;
155 74370 : reconfig_decoder_LPD( st, frame_size, bwidth, total_brate, st->last_L_frame );
156 :
157 74370 : if ( hTcxDec->envWeighted && !hTcxDec->enableTcxLpc )
158 : {
159 0 : mvr2r( st->lspold_uw, st->lsp_old, M );
160 0 : mvr2r( st->lsfold_uw, st->lsf_old, M );
161 0 : hTcxDec->envWeighted = 0;
162 : }
163 :
164 : /* update PLC LSF memories */
165 74370 : lsp2lsf( st->lsp_old, st->lsfoldbfi1, M, st->sr_core );
166 74370 : mvr2r( st->lsfoldbfi1, st->lsfoldbfi0, M );
167 74370 : mvr2r( st->lsfoldbfi1, st->lsf_adaptive_mean, M );
168 :
169 74370 : if ( st->igf && st->hBWE_TD != NULL )
170 : {
171 : /* reset TBE */
172 35244 : if ( ( st->bwidth == WB && st->last_extl != WB_TBE ) ||
173 35154 : ( st->bwidth == SWB && st->last_extl != SWB_TBE ) ||
174 27459 : ( st->bwidth == FB && st->last_extl != FB_TBE ) )
175 : {
176 17568 : TBEreset_dec( st );
177 : }
178 : else
179 : {
180 17676 : set_f( st->hBWE_TD->state_lpc_syn, 0.0f, LPC_SHB_ORDER );
181 17676 : set_f( st->hBWE_TD->state_syn_shbexc, 0.0f, L_SHB_LAHEAD );
182 17676 : set_f( st->hBWE_TD->mem_stp_swb, 0.0f, LPC_SHB_ORDER );
183 17676 : set_f( st->hBWE_TD->mem_zero_swb, 0, LPC_SHB_ORDER );
184 17676 : st->hBWE_TD->gain_prec_swb = 1.0f;
185 : }
186 : }
187 :
188 74370 : if ( bwidth == SWB && ( total_brate == ACELP_16k40 || total_brate == ACELP_24k40 ) && st->element_mode == EVS_MONO )
189 : {
190 42 : if ( st->tec_tfa == 0 && st->hTECDec != NULL )
191 : {
192 0 : set_zero( st->hTECDec->loBuffer, MAX_TEC_SMOOTHING_DEG );
193 : }
194 42 : st->tec_tfa = 1;
195 : }
196 : else
197 : {
198 74328 : st->tec_tfa = 0;
199 : }
200 :
201 74370 : st->tec_flag = 0;
202 74370 : st->tfa_flag = 0;
203 :
204 : /* needed in decoder to read the bitstream */
205 74370 : if ( bwidth >= WB && total_brate == ACELP_24k40 && st->element_mode == EVS_MONO )
206 : {
207 42 : st->enableGplc = 1;
208 : }
209 : else
210 : {
211 74328 : st->enableGplc = 0;
212 : }
213 :
214 74370 : if ( ( total_brate == ACELP_9k60 || total_brate == ACELP_16k40 || total_brate == ACELP_24k40 ) && st->element_mode == EVS_MONO )
215 : {
216 42 : st->dec_glr = 1;
217 : }
218 : else
219 : {
220 74328 : st->dec_glr = 0;
221 : }
222 :
223 74370 : st->dec_glr_idx = 0;
224 :
225 74370 : return;
226 : }
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