diff options
Diffstat (limited to 'opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_mult.h')
| -rw-r--r-- | opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_mult.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_mult.h b/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_mult.h new file mode 100644 index 0000000..2aaea47 --- /dev/null +++ b/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_mult.h @@ -0,0 +1,162 @@ +/* ------------------------------------------------------------------ + * Copyright (C) 1998-2009 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 26.073 + ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec + Available from http://www.3gpp.org + +(C) 2004, 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. +****************************************************************************************/ +/* + + Filename: l_mult.h + +------------------------------------------------------------------------------ + INCLUDE DESCRIPTION + + This file contains all the constant definitions and prototype definitions + needed by the L_mult function. + +------------------------------------------------------------------------------ +*/ + +/*---------------------------------------------------------------------------- +; CONTINUE ONLY IF NOT ALREADY DEFINED +----------------------------------------------------------------------------*/ +#ifndef L_MULT_H +#define L_MULT_H + +/*---------------------------------------------------------------------------- +; INCLUDES +----------------------------------------------------------------------------*/ +#include "basicop_malloc.h" + +/*--------------------------------------------------------------------------*/ +#ifdef __cplusplus +extern "C" +{ +#endif + + /*---------------------------------------------------------------------------- + ; MACROS + ; Define module specific macros here + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; DEFINES + ; Include all pre-processor statements here. + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; EXTERNAL VARIABLES REFERENCES + ; Declare variables used in this module but defined elsewhere + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; SIMPLE TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; ENUMERATED TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; STRUCTURES TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; GLOBAL FUNCTION DEFINITIONS + ; Function Prototype declaration + ----------------------------------------------------------------------------*/ + +#if defined(PV_ARM_V5) /* Instructions for ARM Assembly on ADS*/ + + __inline Word32 L_mult(Word16 var1, Word16 var2, Flag *pOverflow) + { + Word32 result; + Word32 product; + + OSCL_UNUSED_ARG(pOverflow); + + __asm + { + SMULBB product, var1, var2 + QADD result, product, product + } + + return (result); + } + +#elif defined(PV_ARM_GCC_V5) /* Instructions for ARM-linux cross-compiler*/ + + __inline Word32 L_mult(Word16 var1, Word16 var2, Flag *pOverflow) + { + register Word32 ra = var1; + register Word32 rb = var2; + Word32 result; + Word32 product; + + OSCL_UNUSED_ARG(pOverflow); + + asm volatile("smulbb %0, %1, %2" + : "=r"(product) + : "r"(ra), "r"(rb) + ); + + asm volatile("qadd %0, %1, %2" + : "=r"(result) + : "r"(product), "r"(product) + ); + + return(result); + } + +#else /* C EQUIVALENT */ + + static inline Word32 L_mult(Word16 var1, Word16 var2, Flag *pOverflow) + { + register Word32 L_product; + + L_product = (Word32) var1 * var2; + + if (L_product != (Word32) 0x40000000L) + { + L_product <<= 1; /* Multiply by 2 */ + } + else + { + *pOverflow = 1; + L_product = MAX_32; + } + + return (L_product); + } +#endif + /*---------------------------------------------------------------------------- + ; END + ----------------------------------------------------------------------------*/ +#ifdef __cplusplus +} +#endif + +#endif /* _L_MULT_H */ + |