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 "rom_com.h"
      45             : #include "wmc_auto.h"
      46             : 
      47             : /*--------------------------------------------------------------------------*
      48             :  * hq_classifier_dec()
      49             :  *
      50             :  * HQ mode selector (decision_matrix)
      51             :  *--------------------------------------------------------------------------*/
      52             : 
      53             : /*! r: Consumed bits */
      54       24705 : int16_t hq_classifier_dec(
      55             :     Decoder_State *st,        /* i/o: decoder state structure         */
      56             :     const int32_t core_brate, /* i  : Core bitrate                    */
      57             :     const int16_t length,     /* i  : Frame length                    */
      58             :     int16_t *is_transient,    /* o  : Transient flag                  */
      59             :     int16_t *hqswb_clas       /* o  : HQ class                        */
      60             : )
      61             : {
      62             :     int16_t bits;
      63             :     int32_t max_brate;
      64             : 
      65       24705 :     max_brate = HQ_32k;
      66       24705 :     if ( st->element_mode > EVS_MONO )
      67             :     {
      68       23487 :         max_brate = HQ_48k;
      69             :     }
      70             : 
      71       24705 :     if ( ( ( length == L_SPEC32k ) || ( length == L_SPEC48k ) ) && core_brate <= max_brate )
      72             :     {
      73       21510 :         *hqswb_clas = get_next_indice( st, 2 );
      74       21510 :         bits = 2;
      75             :     }
      76        3195 :     else if ( length == L_SPEC16k_EXT || length == L_SPEC48k_EXT )
      77             :     {
      78         399 :         *hqswb_clas = HQ_NORMAL;
      79         399 :         bits = 0;
      80             :     }
      81             :     else
      82             :     {
      83        2796 :         *hqswb_clas = get_next_indice( st, 1 );
      84        2796 :         bits = 1;
      85             :     }
      86             : 
      87       24705 :     *is_transient = 0;
      88       24705 :     if ( *hqswb_clas == HQ_TRANSIENT )
      89             :     {
      90        1617 :         *is_transient = 1;
      91             :     }
      92             : 
      93       24705 :     if ( st->core_brate <= HQ_32k && *hqswb_clas == HQ_NORMAL )
      94             :     {
      95       10710 :         if ( length == L_SPEC32k )
      96             :         {
      97        2238 :             *hqswb_clas = HQ_GEN_SWB;
      98             :         }
      99        8472 :         else if ( length == L_SPEC48k )
     100             :         {
     101        6765 :             *hqswb_clas = HQ_GEN_FB;
     102             :         }
     103             :     }
     104             : 
     105       24705 :     return bits;
     106             : }