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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/include/dec_lag3.h
     35 
     36      Date: 01/29/2002
     37 
     38 ------------------------------------------------------------------------------
     39  REVISION HISTORY
     40 
     41  Description: Placed header file in the proper template format.  Added
     42  parameter pOverflow for the basic math ops.
     43 
     44  Description: Moved _cplusplus #ifdef after Include section.
     45 
     46  Description:
     47 
     48 ------------------------------------------------------------------------------
     49  INCLUDE DESCRIPTION
     50 
     51  This file contains all the constant definitions and prototype definitions
     52  needed by the dec_lag3.c
     53 
     54 ------------------------------------------------------------------------------
     55 */
     56 
     57 /*----------------------------------------------------------------------------
     58 ; CONTINUE ONLY IF NOT ALREADY DEFINED
     59 ----------------------------------------------------------------------------*/
     60 #ifndef dec_lag3_h
     61 #define dec_lag3_h "$Id $"
     62 
     63 
     64 /*----------------------------------------------------------------------------
     65 ; INCLUDES
     66 ----------------------------------------------------------------------------*/
     67 #include "typedef.h"
     68 
     69 /*--------------------------------------------------------------------------*/
     70 #ifdef __cplusplus
     71 extern "C"
     72 {
     73 #endif
     74 
     75     /*----------------------------------------------------------------------------
     76     ; MACROS
     77     ; Define module specific macros here
     78     ----------------------------------------------------------------------------*/
     79 
     80     /*----------------------------------------------------------------------------
     81     ; DEFINES
     82     ; Include all pre-processor statements here.
     83     ----------------------------------------------------------------------------*/
     84 
     85     /*----------------------------------------------------------------------------
     86     ; EXTERNAL VARIABLES REFERENCES
     87     ; Declare variables used in this module but defined elsewhere
     88     ----------------------------------------------------------------------------*/
     89 
     90     /*----------------------------------------------------------------------------
     91     ; SIMPLE TYPEDEF'S
     92     ----------------------------------------------------------------------------*/
     93 
     94     /*----------------------------------------------------------------------------
     95     ; ENUMERATED TYPEDEF'S
     96     ----------------------------------------------------------------------------*/
     97 
     98     /*----------------------------------------------------------------------------
     99     ; STRUCTURES TYPEDEF'S
    100     ----------------------------------------------------------------------------*/
    101 
    102     /*----------------------------------------------------------------------------
    103     ; GLOBAL FUNCTION DEFINITIONS
    104     ; Function Prototype declaration
    105     ----------------------------------------------------------------------------*/
    106 
    107     void Dec_lag3(Word16 index,     /* i : received pitch index                 */
    108     Word16 T0_min,    /* i : minimum of search range              */
    109     Word16 T0_max,    /* i : maximum of search range              */
    110     Word16 i_subfr,   /* i : subframe flag                        */
    111     Word16 T0_prev,   /* i : integer pitch delay of last subframe
    112                                        used in 2nd and 4th subframes        */
    113     Word16 * T0,      /* o : integer part of pitch lag            */
    114     Word16 * T0_frac, /* o : fractional part of pitch lag         */
    115     Word16 flag4,     /* i : flag for encoding with 4 bits        */
    116     Flag   * pOverflow  /* o : Flag set when overflow occurs      */
    117                  );
    118 
    119     /*----------------------------------------------------------------------------
    120     ; END
    121     ----------------------------------------------------------------------------*/
    122 #ifdef __cplusplus
    123 }
    124 #endif
    125 
    126 #endif /* _DEC_LAG_3_H_ */
    127 
    128