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 "cnst.h"
      43             : #include "prot.h"
      44             : #include "wmc_auto.h"
      45             : 
      46             : /*-------------------------------------------------------------------*
      47             :  * decod_nelp()
      48             :  *
      49             :  * Decode unvoiced NELP
      50             :  *-------------------------------------------------------------------*/
      51             : 
      52           0 : void decod_nelp(
      53             :     Decoder_State *st,    /* i/o: decoder static memory                   */
      54             :     float *tmp_noise,     /* o  : long term temporary noise energy        */
      55             :     float *pitch_buf,     /* o  : floating pitch values for each subframe */
      56             :     float *exc,           /* o  : adapt. excitation exc                   */
      57             :     float *exc2,          /* o  : adapt. excitation/total exc             */
      58             :     float *voice_factors, /* o  : voicing factors                         */
      59             :     float *bwe_exc,       /* o  : excitation for SWB TBE                  */
      60             :     const int16_t bfi,    /* i  : bad frame indicator                     */
      61             :     float *gain_buf       /* o  : floating pitch gain for each subframe   */
      62             : )
      63             : {
      64             :     int16_t i, coder_type;
      65             :     float exc_nelp[L_FRAME];
      66             : 
      67           0 :     *tmp_noise = 0;
      68             : 
      69           0 :     if ( st->use_partial_copy && st->rf_frame_type == RF_NELP )
      70             :     {
      71           0 :         coder_type = UNVOICED;
      72             :     }
      73             :     else
      74             :     {
      75           0 :         coder_type = st->coder_type;
      76             :     }
      77             : 
      78           0 :     nelp_decoder( st, exc_nelp, exc, bfi, coder_type, gain_buf );
      79             : 
      80           0 :     mvr2r( exc_nelp, exc, L_FRAME );
      81           0 :     mvr2r( exc_nelp, exc2, L_FRAME );
      82             : 
      83           0 :     st->tilt_code = 0.0f; /* purely unvoiced */
      84           0 :     set_f( st->tilt_code_dec, 0, NB_SUBFR16k );
      85           0 :     st->prev_tilt_code_dec = st->tilt_code;
      86             : 
      87           0 :     st->dispMem[0] = 0;
      88           0 :     st->prev_gain_pit_dec = 0.0;
      89           0 :     st->dispMem[2] = st->prev_gain_pit_dec;
      90             : 
      91           0 :     for ( i = 3; i < 7; i++ )
      92             :     {
      93           0 :         st->dispMem[i] = st->dispMem[i - 1];
      94             :     }
      95             : 
      96           0 :     set_f( pitch_buf, L_SUBFR, NB_SUBFR );
      97           0 :     if ( st->hBWE_TD != NULL )
      98             :     {
      99           0 :         interp_code_5over2( exc2, bwe_exc, L_FRAME );
     100             :     }
     101           0 :     set_f( voice_factors, 0.0f, NB_SUBFR16k );
     102             : 
     103           0 :     return;
     104             : }