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 "wmc_auto.h"
      44             : 
      45             : /*---------------------------------------------------------*
      46             :  * stat_noise_uv_dec()
      47             :  *
      48             :  * Modifies excitation signal in UC mode when the noise is stationary
      49             :  *---------------------------------------------------------*/
      50             : 
      51      426570 : void stat_noise_uv_dec(
      52             :     Decoder_State *st,              /* i/o: decoder static memory               */
      53             :     const float *lsp_new,           /* i  : end-frame LSP vector                */
      54             :     const float *lsp_mid,           /* i  : mid-frame LSP vector                */
      55             :     float *Aq,                      /* o  : A(z) quantized for the 4 subframes  */
      56             :     float *exc2,                    /* i/o: excitation buffer                   */
      57             :     const int16_t uc_two_stage_flag /* i  : flag indicating two-stage UC        */
      58             : )
      59             : {
      60             :     int16_t i;
      61      426570 :     float ftmp, noisiness = 0;
      62             : 
      63             :     /*-----------------------------------------------------------------*
      64             :      * Decode the VAD flag
      65             :      *-----------------------------------------------------------------*/
      66             : 
      67      426570 :     if ( ( st->coder_type == UNVOICED && !uc_two_stage_flag ) || ( st->coder_type == INACTIVE && st->core_brate <= ACELP_9k60 ) )
      68             :     {
      69             :         /* read the noisiness parameter */
      70        1038 :         noisiness = (float) get_next_indice( st, NBITS_NOISENESS );
      71             :     }
      72             : 
      73             :     /*-----------------------------------------------------------------*
      74             :      * Update long-term energies for FEC
      75             :      * Update LSP vector for CNG
      76             :      *-----------------------------------------------------------------*/
      77             : 
      78      426570 :     if ( st->coder_type == INACTIVE )
      79             :     {
      80       20076 :         if ( st->unv_cnt > 20 )
      81             :         {
      82       13596 :             ftmp = st->lp_gainc * st->lp_gainc;
      83       13596 :             st->lp_ener = 0.7f * st->lp_ener + 0.3f * ftmp;
      84       13596 :             if ( st->hTdCngDec != NULL )
      85             :             {
      86        7242 :                 for ( i = 0; i < M; i++ )
      87             :                 {
      88        6816 :                     st->lspCNG[i] = (float) ( 0.9f * st->lspCNG[i] + 0.1f * lsp_new[i] );
      89             :                 }
      90             :             }
      91             :         }
      92             :         else
      93             :         {
      94        6480 :             st->unv_cnt++;
      95             :         }
      96             :     }
      97             :     else
      98             :     {
      99      406494 :         st->unv_cnt = 0;
     100             :     }
     101             : 
     102             :     /*-----------------------------------------------------------------*
     103             :      * Modify the excitation signal
     104             :      *-----------------------------------------------------------------*/
     105             : 
     106      426570 :     if ( !st->Opt_AMR_WB )
     107             :     {
     108      426570 :         stat_noise_uv_mod( st->coder_type, noisiness, st->lsp_old, lsp_new, lsp_mid, Aq, exc2, 0, &st->ge_sm, &st->uv_count, &st->act_count, st->lspold_s, &st->noimix_seed, &st->min_alpha, &st->exc_pe, st->core_brate, st->bwidth );
     109             :     }
     110             : 
     111      426570 :     return;
     112             : }