pvamrwbdecoder_basic_op_armv5.h

实现3GPP的GSM中AMR语音的CODECS。

/* ------------------------------------------------------------------
 * 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 license
terms listed above has been obtained from the copyright holder.
****************************************************************************************/
/*
------------------------------------------------------------------------------



 Pathname: ./src/pvamrwbdecoder_basic_op_armv5.h

     Date: 05/07/2007

------------------------------------------------------------------------------
 REVISION HISTORY

 Description:
------------------------------------------------------------------------------
 INCLUDE DESCRIPTION

------------------------------------------------------------------------------
*/

#ifndef PVAMRWBDECODER_BASIC_OP_ARMV5_H
#define PVAMRWBDECODER_BASIC_OP_ARMV5_H

#ifdef __cplusplus
extern "C"
{
#endif





#if defined(_ARM_V5)

    __inline int16 add_int16(int16 var1, int16 var2)
    {
        int32 L_var_out;
        int32 L_var_aux;

        __asm
        {
            mov L_var_out, var1, lsl #16
            mov L_var_aux, var2, lsl #16
            qadd L_var_out, L_var_out, L_var_aux
            mov L_var_out, L_var_out, asr #16

        }
        return L_var_out;
    }


    __inline int16 sub_int16(int16 var1, int16 var2)
    {
        int32 L_var_out;
        int32 L_var_aux;

        __asm
        {
            mov L_var_out, var1, lsl #16
            mov L_var_aux, var2, lsl #16
            qsub L_var_out, L_var_out, L_var_aux
            mov L_var_out, L_var_out, asr #16

        }
        return L_var_out;
    }


    __inline int32 add_int32(int32 L_var1, int32 L_var2)
    {
        int32 L_var_out;

        __asm
        {
            qadd L_var_out, L_var1, L_var2
        }
        return L_var_out;
    }


    __inline int32 mac_16by16_to_int32(int32 L_var3, int16 var1, int16 var2)
    {
        int32 L_var_out;


        __asm
        {
            smulbb L_var_out, var1, var2
            qdadd L_var_out, L_var3, L_var_out
        }
        return L_var_out;
    }

    __inline int32 sub_int32(int32 L_var1, int32 L_var2)
    {
        int32 L_var_out;

        __asm
        {
            qsub L_var_out, L_var1, L_var2
        }
        return L_var_out;
    }

    __inline int32 msu_16by16_from_int32(int32 L_var3, int16 var1, int16 var2)
    {
        int32 L_var_out;


        __asm
        {
            smulbb L_var_out, var1, var2
            qdsub L_var_out, L_var3, L_var_out
        }
        return L_var_out;
    }

    __inline int32 mul_16by16_to_int32(int16 var1, int16 var2)
    {
        int32 L_var_out;

        __asm
        {
            smulbb L_var_out, var1, var2
            qadd L_var_out, L_var_out, L_var_out
        }
        return L_var_out;
    }

    __inline int16 mult_int16(int16 var1, int16 var2)
    {
        int32 L_var_out;

        __asm
        {
            smulbb L_var_out, var1, var2
            mov L_var_out, L_var_out, asr #15
        }
        return L_var_out;
    }


    __inline int16 amr_wb_round(int32 L_var1)
    {
        int32 L_var_out;

        __asm
        {
            qadd L_var_out, L_var1, (int32) 0x00008000L
            mov L_var_out, L_var_out, asr #16
        }
        return L_var_out;
    }


    __inline int32 mul_32by16(int16 hi, int16 lo, int16 n)
    {
        int32 H_32;
        int32 L_32;
        __asm
        {
            smulbb H_32, hi, n
            smulbb L_32, lo, n
            add H_32, H_32, L_32, asr #15
            qadd H_32, H_32, H_32
        }

        return (H_32);
    }

    __inline  int32 fxp_mac_16by16(const int16 var1, const int16 var2, int32 L_add)
    {
        __asm
        {
            smlabb L_add, var1, var2, L_add
        }
        return (L_add);
    }

    __inline  int32 fxp_mul_16by16(int16 var1, const int16 var2)
    {
        int32 L_mult;
        __asm
        {
            smulbb L_mult, var1, var2
        }
        return (L_mult);
    }

    __inline  int32 fxp_mul32_by_16b(int32 L_var1, const int32 L_var2)
    {
        int32 L_mult;
        __asm
        {
            smulwb L_mult, L_var1, L_var2
        }

        return L_mult;
    }


#endif

#ifdef __cplusplus
}
#endif




#endif   /*  PVAMRWBDECODER_BASIC_OP_ARMV5_H  */