Home | History | Annotate | Download | only in src 
      1 /* ------------------------------------------------------------------
      2  * Copyright (C) 1998-2009 PacketVideo
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
     13  * express or implied.
     14  * See the License for the specific language governing permissions
     15  * and limitations under the License.
     16  * -------------------------------------------------------------------
     17  */
     18 /****************************************************************************************
     19 Portions of this file are derived from the following 3GPP standard:
     20 
     21     3GPP TS 26.073
     22     ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
     23     Available from http://www.3gpp.org
     24 
     25 (C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
     26 Permission to distribute, modify and use this file under the standard license
     27 terms listed above has been obtained from the copyright holder.
     28 ****************************************************************************************/
     29 /*
     30 ------------------------------------------------------------------------------
     31 
     32 
     33 
     34  Filename: /audio/gsm_amr/c/include/ex_ctrl.h
     35 
     36      Date: 02/08/2002
     37 
     38 ------------------------------------------------------------------------------
     39  REVISION HISTORY
     40 
     41  Description: Moved _cplusplus #ifdef after Include section.
     42 
     43  Description:
     44 
     45 ------------------------------------------------------------------------------
     46  INCLUDE DESCRIPTION
     47 
     48      File             : ex_ctrl.h
     49      Purpose          : Excitation Control module in background noise
     50 
     51 ------------------------------------------------------------------------------
     52 */
     53 
     54 /*----------------------------------------------------------------------------
     55 ; CONTINUE ONLY IF NOT ALREADY DEFINED
     56 ----------------------------------------------------------------------------*/
     57 #ifndef ex_ctrl_h
     58 #define ex_ctrl_h "$Id $"
     59 
     60 /*----------------------------------------------------------------------------
     61 ; INCLUDES
     62 ----------------------------------------------------------------------------*/
     63 #include "typedef.h"
     64 #include "cnst.h"
     65 
     66 /*--------------------------------------------------------------------------*/
     67 #ifdef __cplusplus
     68 extern "C"
     69 {
     70 #endif
     71 
     72     /*----------------------------------------------------------------------------
     73     ; MACROS
     74     ; Define module specific macros here
     75     ----------------------------------------------------------------------------*/
     76 
     77     /*----------------------------------------------------------------------------
     78     ; DEFINES
     79     ; Include all pre-processor statements here.
     80     ----------------------------------------------------------------------------*/
     81 #define L_ENERGYHIST 60
     82     /*----------------------------------------------------------------------------
     83     ; EXTERNAL VARIABLES REFERENCES
     84     ; Declare variables used in this module but defined elsewhere
     85     ----------------------------------------------------------------------------*/
     86 
     87     /*----------------------------------------------------------------------------
     88     ; SIMPLE TYPEDEF'S
     89     ----------------------------------------------------------------------------*/
     90 
     91     /*----------------------------------------------------------------------------
     92     ; ENUMERATED TYPEDEF'S
     93     ----------------------------------------------------------------------------*/
     94 
     95     /*----------------------------------------------------------------------------
     96     ; STRUCTURES TYPEDEF'S
     97     ----------------------------------------------------------------------------*/
     98 
     99     /*----------------------------------------------------------------------------
    100     ; GLOBAL FUNCTION DEFINITIONS
    101     ; Function Prototype declaration
    102     ----------------------------------------------------------------------------*/
    103     /*
    104      *  Function    : Ex_ctrl
    105      *  Purpose     : Charaterice synthesis speech and detect background noise
    106      *  Returns     : background noise decision; 0 = bgn, 1 = no bgn
    107      */
    108     Word16 Ex_ctrl(Word16 excitation[],    /*i/o: Current subframe excitation   */
    109     Word16 excEnergy,      /* i : Exc. Energy, sqrt(totEx*totEx)*/
    110     Word16 exEnergyHist[], /* i : History of subframe energies  */
    111     Word16 voicedHangover, /* i : # of fr. after last voiced fr.*/
    112     Word16 prevBFI,        /* i : Set i previous BFI            */
    113     Word16 carefulFlag,    /* i : Restrict dymamic in scaling   */
    114     Flag   *pOverflow
    115                   );
    116 
    117     /*----------------------------------------------------------------------------
    118     ; END
    119     ----------------------------------------------------------------------------*/
    120 #ifdef __cplusplus
    121 }
    122 #endif
    123 
    124 #endif /* _ex_ctrl_h_ */
    125 
    126 
    127 
    128 
    129 
    130 
    131 
    132