diff options
Diffstat (limited to 'opencore/codecs_v2/audio/gsm_amr/amr_nb/common/src/inv_sqrt_tbl.cpp')
-rw-r--r-- | opencore/codecs_v2/audio/gsm_amr/amr_nb/common/src/inv_sqrt_tbl.cpp | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/src/inv_sqrt_tbl.cpp b/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/src/inv_sqrt_tbl.cpp new file mode 100644 index 0000000..3ae066a --- /dev/null +++ b/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/src/inv_sqrt_tbl.cpp @@ -0,0 +1,138 @@ +/* ------------------------------------------------------------------ + * 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: inv_sqrt_tbl.cpp + +------------------------------------------------------------------------------ + MODULE DESCRIPTION + + This file contains the declaration for table[] used by the inv_sqrt function. + +------------------------------------------------------------------------------ +*/ + +/*---------------------------------------------------------------------------- +; INCLUDES +----------------------------------------------------------------------------*/ +#include "inv_sqrt.h" + +/*--------------------------------------------------------------------------*/ +#ifdef __cplusplus +extern "C" +{ +#endif + + /*---------------------------------------------------------------------------- + ; MACROS + ; [Define module specific macros here] + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; DEFINES + ; [Include all pre-processor statements here. Include conditional + ; compile variables also.] + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; LOCAL FUNCTION DEFINITIONS + ; [List function prototypes here] + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; LOCAL VARIABLE DEFINITIONS + ; [Variable declaration - defined here and used outside this module] + ----------------------------------------------------------------------------*/ + const Word16 inv_sqrt_tbl[49] = + { + + 32767, 31790, 30894, 30070, 29309, 28602, 27945, 27330, 26755, 26214, + 25705, 25225, 24770, 24339, 23930, 23541, 23170, 22817, 22479, 22155, + 21845, 21548, 21263, 20988, 20724, 20470, 20225, 19988, 19760, 19539, + 19326, 19119, 18919, 18725, 18536, 18354, 18176, 18004, 17837, 17674, + 17515, 17361, 17211, 17064, 16921, 16782, 16646, 16514, 16384 + }; + + /*--------------------------------------------------------------------------*/ +#ifdef __cplusplus +} +#endif + +/* +------------------------------------------------------------------------------ + FUNCTION NAME: +------------------------------------------------------------------------------ + INPUT AND OUTPUT DEFINITIONS + + Inputs: + None + + Outputs: + None + + Returns: + None + + Global Variables Used: + None + + Local Variables Needed: + None + +------------------------------------------------------------------------------ + FUNCTION DESCRIPTION + + None + +------------------------------------------------------------------------------ + REQUIREMENTS + + None + +------------------------------------------------------------------------------ + REFERENCES + + [1] inv_sqrt.tab file, UMTS GSM AMR speech codec, R99 - Version 3.2.0, + March 2, 2001 + +------------------------------------------------------------------------------ + PSEUDO-CODE + + +------------------------------------------------------------------------------ + CAUTION [optional] + [State any special notes, constraints or cautions for users of this function] + +------------------------------------------------------------------------------ +*/ + +/*---------------------------------------------------------------------------- +; FUNCTION CODE +----------------------------------------------------------------------------*/ + |