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 "rom_com.h"
      44             : #include "prot.h"
      45             : #include "wmc_auto.h"
      46             : 
      47             : /*-------------------------------------------------------------------*
      48             :  * FEC_lsf_estim()
      49             :  *
      50             :  * - LSP calculation
      51             :  * - A(z) calculation
      52             :  *-------------------------------------------------------------------*/
      53             : 
      54       23796 : void FEC_lsf2lsp_interp(
      55             :     Decoder_State *st,     /* i/o: Decoder static memory                        */
      56             :     const int16_t L_frame, /* i  : length of the frame                          */
      57             :     float *Aq,             /* o  : calculated A(z) for 4 subframes              */
      58             :     float *lsf,            /* o  : estimated LSF vector                         */
      59             :     float *lsp             /* o  : estimated LSP vector                         */
      60             : )
      61             : {
      62             :     /* convert LSFs to LSPs */
      63       23796 :     if ( st->Opt_AMR_WB )
      64             :     {
      65           0 :         isf2isp( lsf, lsp, M, INT_FS_12k8 );
      66             :     }
      67             :     else
      68             :     {
      69       23796 :         if ( L_frame == L_FRAME )
      70             :         {
      71        7782 :             lsf2lsp( lsf, lsp, M, INT_FS_12k8 );
      72             :         }
      73             :         else /* L_frame == L_FRAME16k */
      74             :         {
      75       16014 :             lsf2lsp( lsf, lsp, M, INT_FS_16k );
      76             :         }
      77             :     }
      78             : 
      79             :     /*----------------------------------------------------------------------*
      80             :      * Interpolate LSP vector and find A(z)
      81             :      *----------------------------------------------------------------------*/
      82             : 
      83       23796 :     if ( st->Opt_AMR_WB )
      84             :     {
      85           0 :         int_lsp( L_frame, st->lsp_old, lsp, Aq, M, interpol_isp_amr_wb, 1 );
      86             :     }
      87             :     else
      88             :     {
      89       23796 :         int_lsp( L_frame, st->lsp_old, lsp, Aq, M, interpol_frac_12k8, 0 );
      90             :     }
      91             : 
      92       23796 :     return;
      93             : }