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      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  Pathname: ./audio/gsm-amr/c/include/cor_h_x2.h
     35 
     36      Date: 11/07/2001
     37 
     38 ------------------------------------------------------------------------------
     39  REVISION HISTORY
     40 
     41  Description: Created separate header file for cor_h_x2.
     42 
     43  Description: Added pOverflow for EPOC modifications
     44 
     45  Description: Moved _cplusplus #ifdef after Include section.
     46 
     47  Description:
     48 
     49 ------------------------------------------------------------------------------
     50  INCLUDE DESCRIPTION
     51 
     52  This file contains prototype declaration for cor_h_x2 function.
     53 
     54 ------------------------------------------------------------------------------
     55 */
     56 
     57 /*----------------------------------------------------------------------------
     58 ; CONTINUE ONLY IF NOT ALREADY DEFINED
     59 ----------------------------------------------------------------------------*/
     60 #ifndef COR_H_X2_H
     61 #define COR_H_X2_H
     62 
     63 /*----------------------------------------------------------------------------
     64 ; INCLUDES
     65 ----------------------------------------------------------------------------*/
     66 #include    "typedef.h"
     67 
     68 /*--------------------------------------------------------------------------*/
     69 #ifdef __cplusplus
     70 extern "C"
     71 {
     72 #endif
     73 
     74     /*----------------------------------------------------------------------------
     75     ; MACROS
     76     ; Define module specific macros here
     77     ----------------------------------------------------------------------------*/
     78 
     79     /*----------------------------------------------------------------------------
     80     ; DEFINES
     81     ; Include all pre-processor statements here.
     82     ----------------------------------------------------------------------------*/
     83 
     84     /*----------------------------------------------------------------------------
     85     ; EXTERNAL VARIABLES REFERENCES
     86     ; Declare variables used in this module but defined elsewhere
     87     ----------------------------------------------------------------------------*/
     88 
     89     /*----------------------------------------------------------------------------
     90     ; SIMPLE TYPEDEF'S
     91     ----------------------------------------------------------------------------*/
     92 
     93     /*----------------------------------------------------------------------------
     94     ; ENUMERATED TYPEDEF'S
     95     ----------------------------------------------------------------------------*/
     96 
     97     /*----------------------------------------------------------------------------
     98     ; STRUCTURES TYPEDEF'S
     99     ----------------------------------------------------------------------------*/
    100 
    101     /*----------------------------------------------------------------------------
    102     ; GLOBAL FUNCTION DEFINITIONS
    103     ; Function Prototype declaration
    104     ----------------------------------------------------------------------------*/
    105     void cor_h_x2(
    106         Word16 h[],    /* (i): impulse response of weighted synthesis filter */
    107         Word16 x[],    /* (i): target                                        */
    108         Word16 dn[],   /* (o): correlation between target and h[]            */
    109         Word16 sf,     /* (i): scaling factor: 2 for 12.2, 1 for others      */
    110         Word16 nb_track,/* (i): the number of ACB tracks                     */
    111         Word16 step,   /* (i): step size from one pulse position to the next
    112                            in one track                                  */
    113         Flag *pOverflow
    114     );
    115 
    116 #ifdef __cplusplus
    117 }
    118 #endif
    119 
    120 #endif  /* _COR_H_X2_H_ */
    121 
    122