diff options
Diffstat (limited to 'media/libstagefright/codecs/amrnb/common/include/sqrt_l.h')
-rw-r--r-- | media/libstagefright/codecs/amrnb/common/include/sqrt_l.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrnb/common/include/sqrt_l.h b/media/libstagefright/codecs/amrnb/common/include/sqrt_l.h new file mode 100644 index 0000000..86209bd --- /dev/null +++ b/media/libstagefright/codecs/amrnb/common/include/sqrt_l.h @@ -0,0 +1,118 @@ +/* ------------------------------------------------------------------ + * 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/sqrt_l.h + +------------------------------------------------------------------------------ + REVISION HISTORY + + + Description: Updated function prototype declaration to reflect new interface. + A pointer to overflow flag is passed into the function. Updated + template. + + Description: Added extern declaration for sqrt_l_tbl[] + + Description: Moved _cplusplus #ifdef before function prototype. + + Who: Date: + Description: + + +------------------------------------------------------------------------------ + INCLUDE DESCRIPTION + + This file contains all the constant definitions and prototype definitions + needed by the sqrt_l() function. + +------------------------------------------------------------------------------ +*/ + +#ifndef SQRT_L_H +#define SQRT_L_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 + ----------------------------------------------------------------------------*/ + extern Word16 sqrt_l_tbl[]; + + /*---------------------------------------------------------------------------- + ; SIMPLE TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; ENUMERATED TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; STRUCTURES TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; GLOBAL FUNCTION DEFINITIONS + ; Function Prototype declaration + ----------------------------------------------------------------------------*/ + + Word32 sqrt_l_exp( /* o : output value, Q31 */ + Word32 L_x, /* i : input value, Q31 */ + Word16 *pExp, /* o : right shift to be applied to result, Q1 */ + Flag *pOverflow /* i : pointer to overflow flag */ + ); + + /*---------------------------------------------------------------------------- + ; END + ----------------------------------------------------------------------------*/ +#ifdef __cplusplus +} +#endif + +#endif /* _SQRT_L__H_ */ + |