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_ppp()
      48             :  *
      49             :  * PPP decoder
      50             :  *-------------------------------------------------------------------*/
      51             : 
      52           0 : ivas_error decod_ppp(
      53             :     Decoder_State *st,    /* i/o: state structure                         */
      54             :     const float Aq[],     /* i  : 12k8 Lp coefficient                     */
      55             :     float *pitch_buf,     /* i/o: floating pitch values for each subframe */
      56             :     float *exc,           /* i/o: current non-enhanced excitation         */
      57             :     float *exc2,          /* i/o: current enhanced excitation             */
      58             :     float *voice_factors, /* o  : voicing factors                         */
      59             :     float *bwe_exc,       /* o  : excitation for SWB TBE                  */
      60             :     float *gain_buf,      /* o  : floating pitch gain for each subframe   */
      61             :     const int16_t bfi     /* i  : BFI flag                                */
      62             : )
      63             : {
      64             :     int16_t k;
      65             :     float p_Aq_old[M + 1], excQ_ppp[L_FRAME], p_Aq_curr[M], LPC_de_old[M + 1];
      66             :     float LPC_de_curr[M + 1], pitch[NB_SUBFR];
      67             :     ivas_error error;
      68             : 
      69           0 :     error = IVAS_ERR_OK;
      70             : 
      71             :     /* call voiced decoder at this point */
      72           0 :     for ( k = 0; k < M; k++ )
      73             :     {
      74           0 :         p_Aq_curr[k] = Aq[k + ( 3 * ( M + 1 ) ) + 1];
      75             :     }
      76             : 
      77           0 :     lsp2a_stab( st->lsp_old, p_Aq_old, M );
      78             : 
      79           0 :     deemph_lpc( p_Aq_curr, p_Aq_old, LPC_de_curr, LPC_de_old, 0 );
      80             : 
      81             :     /* last frame-end lpc and curr frame-end lpc */
      82           0 :     if ( ( error = ppp_voiced_decoder( st, excQ_ppp, LPC_de_curr, exc, pitch, bfi ) ) != IVAS_ERR_OK )
      83             :     {
      84           0 :         return error;
      85             :     }
      86             : 
      87             : 
      88           0 :     st->tilt_code = st->prev_tilt_code_dec;
      89             : 
      90           0 :     mvr2r( excQ_ppp, exc, L_FRAME );
      91           0 :     mvr2r( exc, exc2, L_FRAME );
      92             : 
      93           0 :     st->dispMem[0] = 2;
      94           0 :     st->dispMem[2] = st->prev_gain_pit_dec;
      95             : 
      96           0 :     for ( k = 3; k < 7; k++ )
      97             :     {
      98           0 :         st->dispMem[k] = st->dispMem[k - 1];
      99             :     }
     100             : 
     101           0 :     mvr2r( pitch, pitch_buf, NB_SUBFR );
     102             : 
     103           0 :     if ( st->hBWE_TD != NULL )
     104             :     {
     105           0 :         interp_code_5over2( exc2, bwe_exc, L_FRAME );
     106             :     }
     107           0 :     set_f( voice_factors, 0.0f, NB_SUBFR16k );
     108           0 :     set_f( gain_buf, 0, NB_SUBFR16k );
     109             : 
     110           0 :     return error;
     111             : }