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             :  * get_next_coeff_mapped()
      48             :  *
      49             :  *
      50             :  *-------------------------------------------------------------------*/
      51             : 
      52             : /*! r: index of next coefficient */
      53   185498708 : int16_t get_next_coeff_mapped(
      54             :     int16_t ii[2],            /* i/o: coefficient indexes       */
      55             :     int32_t *pp,              /* o  : peak(1)/hole(0) indicator */
      56             :     int16_t *idx,             /* o  : index in unmapped domain  */
      57             :     CONTEXT_HM_CONFIG *hm_cfg /* i  : HM configuration          */
      58             : )
      59             : {
      60             :     uint32_t p;
      61             : 
      62   185498708 :     p = ( ii[1] - hm_cfg->numPeakIndices ) & ( hm_cfg->indexBuffer[ii[1]] - hm_cfg->indexBuffer[ii[0]] );
      63   185498708 :     p >>= sizeof( p ) * 8 - 1;
      64   185498708 :     *pp = p;
      65   185498708 :     *idx = ii[p];
      66   185498708 :     ii[p]++;
      67             : 
      68   185498708 :     return hm_cfg->indexBuffer[*idx];
      69             : }
      70             : 
      71             : 
      72             : /*-------------------------------------------------------------------*
      73             :  * get_next_coeff_unmapped()
      74             :  *
      75             :  *
      76             :  *-------------------------------------------------------------------*/
      77             : 
      78             : /*! r: index of next coefficient */
      79     1109198 : int16_t get_next_coeff_unmapped(
      80             :     int16_t *ii, /* i/o: coefficient indexes       */
      81             :     int16_t *idx /* o  : index in unmapped domain  */
      82             : )
      83             : {
      84     1109198 :     *idx = *ii;
      85     1109198 :     ( *ii )++;
      86             : 
      87     1109198 :     return *idx;
      88             : }
      89             : 
      90             : /*-------------------------------------------------------------------*
      91             :  * update_mixed_context()
      92             :  *
      93             :  *
      94             :  *-------------------------------------------------------------------*/
      95             : 
      96    15674425 : int32_t update_mixed_context(
      97             :     int32_t ctx,
      98             :     int16_t a )
      99             : {
     100             :     int32_t t;
     101             : 
     102    15674425 :     t = 1 - 13 + ( a & ~1 ) * ( ( a >> 2 ) + 1 );
     103             : 
     104    15674425 :     if ( t > 0 )
     105             :     {
     106      379927 :         t = min( ( a >> 3 ), 2 );
     107             :     }
     108             : 
     109    15674425 :     return ( ctx & 0xf ) * 16 + t + 13;
     110             : }