/* ------------------------------------------------------------------ * Copyright (C) 2008 PacketVideo * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either * express or implied. * See the License for the specific language governing permissions * and limitations under the License. * ------------------------------------------------------------------- *//****************************************************************************************Portions of this file are derived from the following 3GPP standard:    3GPP TS 26.173    ANSI-C code for the Adaptive Multi-Rate - Wideband (AMR-WB) speech codec    Available from http://www.3gpp.org(C) 2007, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)Permission to distribute, modify and use this file under the standard licenseterms listed above has been obtained from the copyright holder.****************************************************************************************//*------------------------------------------------------------------------------ Filename: median5.cpp     Date: 05/08/2007------------------------------------------------------------------------------ REVISION HISTORY Description:------------------------------------------------------------------------------ INPUT AND OUTPUT DEFINITIONS   INPUT       X[-2:2]   16-bit integers.   RETURN VALUE       The median of {X[-2], X[-1],..., X[2]}.------------------------------------------------------------------------------ FUNCTION DESCRIPTION      Returns the median of the set {X[-2], X[-1],..., X[2]},      whose elements are 16-bit integers.------------------------------------------------------------------------------ REQUIREMENTS------------------------------------------------------------------------------ REFERENCES------------------------------------------------------------------------------ PSEUDO-CODE------------------------------------------------------------------------------*//*----------------------------------------------------------------------------; INCLUDES----------------------------------------------------------------------------*/#include "pv_amr_wb_type_defs.h"#include "pvamrwbdecoder_basic_op.h"#include "pvamrwbdecoder_acelp.h"#include "pvamrwb_math_op.h"/*----------------------------------------------------------------------------; MACROS; Define module specific macros here----------------------------------------------------------------------------*//*----------------------------------------------------------------------------; DEFINES; Include all pre-processor statements here. Include conditional; compile variables also.----------------------------------------------------------------------------*//*----------------------------------------------------------------------------; LOCAL FUNCTION DEFINITIONS; Function Prototype declaration----------------------------------------------------------------------------*//*----------------------------------------------------------------------------; LOCAL STORE/BUFFER/POINTER DEFINITIONS; Variable declaration - defined here and used outside this module----------------------------------------------------------------------------*//*----------------------------------------------------------------------------; EXTERNAL FUNCTION REFERENCES; Declare functions defined elsewhere and referenced in this module----------------------------------------------------------------------------*//*----------------------------------------------------------------------------; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES; Declare variables used in this module but defined elsewhere----------------------------------------------------------------------------*//*----------------------------------------------------------------------------; FUNCTION CODE----------------------------------------------------------------------------*/int16 median5(int16 x[]){    int16 x1, x2, x3, x4, x5;    int16 tmp;    x1 = x[-2];    x2 = x[-1];    x3 = x[0];    x4 = x[1];    x5 = x[2];    if (x2 < x1)    {        tmp = x1;        x1 = x2;        x2 = tmp;    }    if (x3 < x1)    {        tmp = x1;        x1 = x3;        x3 = tmp;    }    if (x4 < x1)    {        tmp = x1;        x1 = x4;        x4 = tmp;    }    if (x5 < x1)    {        x5 = x1;    }    if (x3 < x2)    {        tmp = x2;        x2 = x3;        x3 = tmp;    }    if (x4 < x2)    {        tmp = x2;        x2 = x4;        x4 = tmp;    }    if (x5 < x2)    {        x5 = x2;    }    if (x4 < x3)    {        x3 = x4;    }    if (x5 < x3)    {        x3 = x5;    }    return (x3);}