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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  Filename: /audio/gsm_amr/c/src/include/hp_max.h
     35 
     36      Date: 02/01/2002
     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             : hp_max.h
     49        Purpose          : Find the maximum correlation of scal_sig[] in a given
     50                           delay range.
     51 
     52 ------------------------------------------------------------------------------
     53 */
     54 
     55 #ifndef HP_MAX_H
     56 #define HP_MAX_H  "$Id $"
     57 
     58 /*----------------------------------------------------------------------------
     59 ; INCLUDES
     60 ----------------------------------------------------------------------------*/
     61 #include "typedef.h"
     62 
     63 /*--------------------------------------------------------------------------*/
     64 #ifdef __cplusplus
     65 extern "C"
     66 {
     67 #endif
     68 
     69     /*----------------------------------------------------------------------------
     70     ; MACROS
     71     ; [Define module specific macros here]
     72     ----------------------------------------------------------------------------*/
     73 
     74     /*----------------------------------------------------------------------------
     75     ; DEFINES
     76     ; [Include all pre-processor statements here.]
     77     ----------------------------------------------------------------------------*/
     78 
     79     /*----------------------------------------------------------------------------
     80     ; EXTERNAL VARIABLES REFERENCES
     81     ; [Declare variables used in this module but defined elsewhere]
     82     ----------------------------------------------------------------------------*/
     83 
     84     /*----------------------------------------------------------------------------
     85     ; SIMPLE TYPEDEF'S
     86     ----------------------------------------------------------------------------*/
     87 
     88     /*----------------------------------------------------------------------------
     89     ; ENUMERATED TYPEDEF'S
     90     ----------------------------------------------------------------------------*/
     91 
     92     /*----------------------------------------------------------------------------
     93     ; STRUCTURES TYPEDEF'S
     94     ----------------------------------------------------------------------------*/
     95 
     96     /*----------------------------------------------------------------------------
     97     ; GLOBAL FUNCTION DEFINITIONS
     98     ; [List function prototypes here]
     99     ----------------------------------------------------------------------------*/
    100     Word16 hp_max(
    101         Word32 corr[],      /* i   : correlation vector.                      */
    102         Word16 scal_sig[],  /* i   : scaled signal.                           */
    103         Word16 L_frame,     /* i   : length of frame to compute pitch         */
    104         Word16 lag_max,     /* i   : maximum lag                              */
    105         Word16 lag_min,     /* i   : minimum lag                              */
    106         Word16 *cor_hp_max, /* o   : max high-pass filtered norm. correlation */
    107         Flag   *pOverflow   /* i/o : overflow Flag                            */
    108     );
    109 
    110 #ifdef __cplusplus
    111 }
    112 #endif
    113 
    114 #endif  /* _HP_MAX_H_ */
    115 
    116 
    117