diff options
Diffstat (limited to 'media/libstagefright/codecs/amrnb/common/include/pow2.h')
-rw-r--r-- | media/libstagefright/codecs/amrnb/common/include/pow2.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrnb/common/include/pow2.h b/media/libstagefright/codecs/amrnb/common/include/pow2.h new file mode 100644 index 0000000..9b944eb --- /dev/null +++ b/media/libstagefright/codecs/amrnb/common/include/pow2.h @@ -0,0 +1,115 @@ +/* ------------------------------------------------------------------ + * 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: /audio/gsm_amr/c/include/log2_norm.h + +------------------------------------------------------------------------------ + REVISION HISTORY + + Description: Updated function prototype declaration to reflect new interface. + A pointer to overflow flag is passed into the function. Updated + template. Added extern declaration for pow2_tbl[] + + Description: Moved _cplusplus #ifdef after Include section. + + Who: Date: + Description: + +------------------------------------------------------------------------------ + INCLUDE DESCRIPTION + + This file contains the prototype declaration for Pow2() function. + +------------------------------------------------------------------------------ +*/ + +/*---------------------------------------------------------------------------- +; CONTINUE ONLY IF NOT ALREADY DEFINED +----------------------------------------------------------------------------*/ +#ifndef POW2_H +#define POW2_H + +/*---------------------------------------------------------------------------- +; INCLUDES +----------------------------------------------------------------------------*/ +#include "typedef.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 + ----------------------------------------------------------------------------*/ + extern const Word16 pow2_tbl[]; + /*---------------------------------------------------------------------------- + ; SIMPLE TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; ENUMERATED TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; STRUCTURES TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; GLOBAL FUNCTION DEFINITIONS + ; Function Prototype declaration + ----------------------------------------------------------------------------*/ + + Word32 Pow2( /* (o) : result (range: 0<=val<=0x7fffffff) */ + Word16 exponent, /* (i) : Integer part. (range: 0<=val<=30) */ + Word16 fraction, /* (i) : Fractional part. (range: 0.0<=val<1.0) */ + Flag *pOverflow /* (i/o) : overflow flag */ + ); + + /*---------------------------------------------------------------------------- + ; END + ----------------------------------------------------------------------------*/ +#ifdef __cplusplus +} +#endif + +#endif /* _POW2_H_ */ |