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             : 
      38             : #include <stdint.h>
      39             : #include "options.h"
      40             : #ifdef DEBUGGING
      41             : #include "debug.h"
      42             : #endif
      43             : #include "cnst.h"
      44             : #include "prot.h"
      45             : #include "wmc_auto.h"
      46             : 
      47             : /*------------------------------------------------------------------------*
      48             :  * FEC_pitch_estim()
      49             :  *
      50             :  * Estimation of pitch for FEC
      51             :  *------------------------------------------------------------------------*/
      52             : 
      53      459954 : void FEC_pitch_estim(
      54             :     const int16_t Opt_AMR_WB,    /* i  : flag indicating AMR-WB IO mode          */
      55             :     const int16_t last_core,     /* i  : last core                               */
      56             :     const int16_t L_frame,       /* i  : length of the frame                     */
      57             :     const int16_t clas,          /* i  : current frame classification            */
      58             :     const int16_t last_good,     /* i  : last good clas information              */
      59             :     const float pitch_buf[],     /* i  : Floating pitch   for each subframe      */
      60             :     const float old_pitch_buf[], /* i  : buffer of old subframe pitch values     */
      61             :     float *bfi_pitch,            /* i/o: update of the estimated pitch for FEC   */
      62             :     int16_t *bfi_pitch_frame,    /* o  : frame length when pitch was updated     */
      63             :     int16_t *upd_cnt,            /* i/o: update counter                          */
      64             :     const int16_t coder_type     /* i  : coder_type                              */
      65             : )
      66             : {
      67      459954 :     if ( last_core == HQ_CORE || last_core == TCX_20_CORE || last_core == TCX_10_CORE )
      68             :     {
      69       20583 :         *bfi_pitch = pitch_buf[( L_frame / L_SUBFR ) - 1];
      70       20583 :         *bfi_pitch_frame = L_frame;
      71       20583 :         *upd_cnt = MAX_UPD_CNT;
      72             :     }
      73             : 
      74      459954 :     if ( ( clas == VOICED_CLAS && last_good >= VOICED_TRANSITION ) || ( Opt_AMR_WB && clas == VOICED_CLAS ) )
      75             :     {
      76             :         /* update pitch for FEC if pitch is coherent */
      77      216870 :         if ( ( ( pitch_buf[3] < 1.4f * pitch_buf[1] ) && ( pitch_buf[3] > 0.7f * pitch_buf[1] ) &&
      78      208767 :                ( pitch_buf[1] < 1.4f * old_pitch_buf[2 * NB_SUBFR - 1] ) && ( pitch_buf[1] > 0.7f * old_pitch_buf[2 * NB_SUBFR - 1] ) &&
      79      115287 :                ( L_frame == L_FRAME ) ) ||
      80      115287 :              ( ( pitch_buf[3] < 1.4f * pitch_buf[1] ) && ( pitch_buf[3] > 0.7f * pitch_buf[1] ) &&
      81      107184 :                ( pitch_buf[1] < 1.4f * old_pitch_buf[2 * NB_SUBFR16k - 1] ) && ( pitch_buf[1] > 0.7f * old_pitch_buf[2 * NB_SUBFR16k - 1] ) &&
      82       27003 :                ( L_frame == L_FRAME16k ) ) ||
      83             :              ( coder_type == TRANSITION ) )
      84             :         {
      85      193245 :             *bfi_pitch = pitch_buf[( L_frame / L_SUBFR ) - 1];
      86      193245 :             *bfi_pitch_frame = L_frame;
      87      193245 :             *upd_cnt = 0;
      88             :         }
      89             :     }
      90             : 
      91      459954 :     return;
      92             : }