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             :  * pred_lt4()
      49             :  *
      50             :  * Compute the result of long term prediction with fractionnal
      51             :  * interpolation of resolution 1/4.
      52             :  *
      53             :  * On return, exc[0..L_subfr-1] contains the interpolated signal
      54             :  *   (adaptive codebook excitation)
      55             :  *-------------------------------------------------------------------*/
      56             : 
      57     3557570 : void pred_lt4(
      58             :     const float excI[],     /* i  : input excitation buffer  */
      59             :     float excO[],           /* o  : output excitation buffer */
      60             :     const int16_t T0,       /* i  : integer pitch lag        */
      61             :     int16_t frac,           /* i  : fraction of lag          */
      62             :     const int16_t L_subfr,  /* i  : subframe size            */
      63             :     const float *win,       /* i  : interpolation window     */
      64             :     const int16_t nb_coef,  /* i  : nb of filter coef        */
      65             :     const int16_t up_sample /* i  : up_sample                */
      66             : )
      67             : {
      68             :     int16_t i, j;
      69             :     float s;
      70             :     const float *x1, *x2, *x0, *c1, *c2;
      71             : 
      72     3557570 :     x0 = &excI[-T0];
      73     3557570 :     frac = -frac;
      74             : 
      75     3557570 :     if ( frac < 0 )
      76             :     {
      77     2569789 :         frac += up_sample;
      78     2569789 :         x0--;
      79             :     }
      80             : 
      81   244777282 :     for ( j = 0; j < L_subfr; j++ )
      82             :     {
      83   241219712 :         x1 = x0++;
      84   241219712 :         x2 = x1 + 1;
      85   241219712 :         c1 = &win[frac];
      86   241219712 :         c2 = &win[up_sample - frac];
      87             : 
      88   241219712 :         s = 0.0f;
      89  3189670832 :         for ( i = 0; i < nb_coef; i++, c1 += up_sample, c2 += up_sample )
      90             :         {
      91  2948451120 :             s += ( *x1-- ) * ( *c1 ) + ( *x2++ ) * ( *c2 );
      92             :         }
      93   241219712 :         excO[j] = s;
      94             :     }
      95             : 
      96     3557570 :     return;
      97             : }
      98             : 
      99             : /*-------------------------------------------------------------------*
     100             :  * pred_lt4_tc()
     101             :  *
     102             :  * adapt. search of the second impulse in the same subframe (when appears)
     103             :  * On return, exc[0..L_subfr-1] contains the interpolated signal
     104             :  *   (adaptive codebook excitation)
     105             :  *-------------------------------------------------------------------*/
     106             : 
     107       56198 : void pred_lt4_tc(
     108             :     float exc[],           /* i/o: excitation buffer        */
     109             :     const int16_t T0,      /* i  : integer pitch lag        */
     110             :     int16_t frac,          /* i  : fraction of lag          */
     111             :     const float *win,      /* i  : interpolation window     */
     112             :     const int16_t imp_pos, /* i  : glottal impulse position */
     113             :     const int16_t i_subfr  /* i  : subframe index           */
     114             : )
     115             : {
     116             :     int16_t i, j;
     117             :     float s;
     118             :     const float *x1, *x2, *x0, *c1, *c2;
     119             :     float excO[L_SUBFR + 1];
     120             :     float excI[2 * L_SUBFR];
     121             : 
     122       56198 :     mvr2r( exc + i_subfr - L_SUBFR, excI, 2 * L_SUBFR );
     123             : 
     124       56198 :     if ( ( ( T0 + imp_pos - L_IMPULSE2 ) < L_SUBFR ) && ( T0 < L_SUBFR ) )
     125             :     {
     126        8585 :         set_f( excI + L_SUBFR - T0, 0, T0 );
     127        8585 :         set_f( excO, 0, L_SUBFR + 1 );
     128        8585 :         x0 = excI + L_SUBFR;
     129        8585 :         frac = -frac;
     130             : 
     131        8585 :         if ( frac < 0 )
     132             :         {
     133        4139 :             frac += PIT_UP_SAMP;
     134        4139 :             x0--;
     135             :         }
     136             : 
     137      164925 :         for ( j = T0; j < L_SUBFR + 1; j++ )
     138             :         {
     139      156340 :             x1 = x0++;
     140      156340 :             x2 = x1 + 1;
     141      156340 :             c1 = &win[frac];
     142      156340 :             c2 = &win[PIT_UP_SAMP - frac];
     143             : 
     144      156340 :             s = 0.0f;
     145     2657780 :             for ( i = 0; i < L_INTERPOL2; i++, c1 += PIT_UP_SAMP, c2 += PIT_UP_SAMP )
     146             :             {
     147     2501440 :                 s += ( *x1-- ) * ( *c1 ) + ( *x2++ ) * ( *c2 );
     148             :             }
     149      156340 :             excO[j] = s;
     150             :         }
     151             : 
     152      156340 :         for ( i = T0; i < L_SUBFR; i++ )
     153             :         {
     154      147755 :             exc[i + i_subfr] += PIT_SHARP * excO[i];
     155             :         }
     156             :     }
     157             : 
     158       56198 :     return;
     159             : }