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 <math.h>
      43             : #include "cnst.h"
      44             : #include "rom_com.h"
      45             : #include "prot.h"
      46             : #include "wmc_auto.h"
      47             : 
      48             : /*----------------------------------------------------------------------------------*
      49             :  * CNG_reset_dec()
      50             :  *
      51             :  * Reset decoder static variables in case of CNG frame
      52             :  *----------------------------------------------------------------------------------*/
      53             : 
      54       58263 : void CNG_reset_dec(
      55             :     Decoder_State *st,   /* i/o: decoder state structure            */
      56             :     float *pitch_buf,    /* o  : floating pitch for each subframe   */
      57             :     float *voice_factors /* o  : voicing factors                    */
      58             : )
      59             : {
      60       58263 :     mvr2r( UVWB_Ave, st->mem_AR, M );
      61       58263 :     set_f( st->mem_MA, 0, M );
      62       58263 :     set_f( st->dispMem, 0, 8 );
      63       58263 :     st->tilt_code = 0.0f;
      64       58263 :     st->gc_threshold = 0.0f;
      65             : 
      66             :     /* last good received frame for FEC in ACELP */
      67       58263 :     st->clas_dec = UNVOICED_CLAS;
      68       58263 :     st->last_good = UNVOICED_CLAS;
      69             : 
      70             :     /* LP-filtered pitch gain set to 0 */
      71       58263 :     st->lp_gainp = 0.0f;
      72             : 
      73             :     /* convert CNG energy into CNG gain for ACELP FEC */
      74       58263 :     st->lp_gainc = (float) sqrt( st->lp_ener );
      75             : 
      76             :     /* reset the pitch buffer in case of FRAME_NO_DATA or SID frames */
      77       58263 :     if ( st->L_frame == L_FRAME )
      78             :     {
      79       21816 :         set_f( pitch_buf, (float) L_SUBFR, NB_SUBFR );
      80             :     }
      81             :     else /* st->L_frame == L_FRAME16k */
      82             :     {
      83       36447 :         set_f( pitch_buf, (float) L_SUBFR16k, NB_SUBFR16k );
      84             :     }
      85             : 
      86       58263 :     set_f( voice_factors, 1.0, NB_SUBFR16k );
      87             : 
      88             :     /* deactivate bass post-filter */
      89       58263 :     st->bpf_off = 1;
      90             : 
      91             :     /* Reset active frame counter */
      92       58263 :     if ( st->hTdCngDec != NULL )
      93             :     {
      94       27225 :         st->hTdCngDec->act_cnt2 = 0;
      95             :     }
      96             : 
      97       58263 :     return;
      98             : }