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 "wmc_auto.h"
      45             : 
      46             : /*-----------------------------------------------------------------*
      47             :  * stat_noise_uv_enc()
      48             :  *
      49             :  * Modifies excitation signal when the noise is stationary
      50             :  *-----------------------------------------------------------------*/
      51             : 
      52      146473 : void stat_noise_uv_enc(
      53             :     Encoder_State *st,              /* i/o: state structure                      */
      54             :     const float *epsP,              /* i  : LP prediction errors                 */
      55             :     const float *isp_new,           /* i  : immittance spectral pairs at 4th sfr */
      56             :     const float *isp_mid,           /* i  : immittance spectral pairs at 2nd sfr */
      57             :     float *Aq,                      /* i/o: A(z) quantized for the 4 subframes   */
      58             :     float *exc2,                    /* i/o: excitation buffer                    */
      59             :     const int16_t uc_two_stage_flag /* o  : flag undicating two-stage UC         */
      60             : )
      61             : {
      62      146473 :     int16_t noisiness = 0;
      63      146473 :     int16_t levels = ( 1 << NBITS_NOISENESS );
      64             : 
      65             :     /*-----------------------------------------------------------------*
      66             :      * Calculate and write the noisiness parameter
      67             :      *-----------------------------------------------------------------*/
      68             : 
      69      146473 :     if ( ( st->coder_type == UNVOICED && !uc_two_stage_flag ) || ( st->coder_type == INACTIVE && st->core_brate <= ACELP_9k60 ) )
      70             :     {
      71         350 :         if ( st->bwidth != NB )
      72             :         {
      73             :             /* WB case */
      74         350 :             noisiness = (int16_t) ( ( ( epsP[2] / epsP[16] ) - 1 ) * 2.0f * levels );
      75             :         }
      76           0 :         else if ( st->coder_type == INACTIVE && st->bwidth == NB )
      77             :         {
      78             :             /* NB GSC case */
      79           0 :             noisiness = (int16_t) ( ( ( epsP[2] / epsP[16] ) - 1 ) * 0.25f * levels );
      80             :         }
      81             :         else
      82             :         {
      83             :             /* NB case */
      84           0 :             noisiness = (int16_t) ( ( ( epsP[2] / epsP[16] ) - 1 ) * 0.5f * levels );
      85             :         }
      86             : 
      87         350 :         if ( noisiness < 0 )
      88             :         {
      89           0 :             noisiness = 0;
      90             :         }
      91             : 
      92         350 :         if ( noisiness > levels - 1 )
      93             :         {
      94          13 :             noisiness = levels - 1;
      95             :         }
      96             : 
      97         350 :         push_indice( st->hBstr, IND_NOISINESS, noisiness, NBITS_NOISENESS );
      98             :     }
      99             : 
     100             :     /*-----------------------------------------------------------------*
     101             :      * Modify the stationary noise excitation signal
     102             :      *-----------------------------------------------------------------*/
     103             : 
     104      146473 :     stat_noise_uv_mod( st->coder_type, noisiness, st->lsp_old, isp_new, isp_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 );
     105             : 
     106      146473 :     return;
     107             : }