diff options
Diffstat (limited to 'opencore/codecs_v2/audio/gsm_amr/amr_nb/common/src/log2_tbl.cpp')
-rw-r--r-- | opencore/codecs_v2/audio/gsm_amr/amr_nb/common/src/log2_tbl.cpp | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/src/log2_tbl.cpp b/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/src/log2_tbl.cpp new file mode 100644 index 0000000..76f66b0 --- /dev/null +++ b/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/src/log2_tbl.cpp @@ -0,0 +1,137 @@ +/* ------------------------------------------------------------------ + * 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: log2_tbl.cpp + +------------------------------------------------------------------------------ + MODULE DESCRIPTION + + This file contains the declaration for log2_tbl[] used by the log2() and + log2_norm() function. + +------------------------------------------------------------------------------ +*/ + +/*---------------------------------------------------------------------------- +; INCLUDES +----------------------------------------------------------------------------*/ +#include "log2_norm.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 log2_tbl[33] = + { + 0, 1455, 2866, 4236, 5568, 6863, 8124, 9352, 10549, 11716, + 12855, 13967, 15054, 16117, 17156, 18172, 19167, 20142, 21097, 22033, + 22951, 23852, 24735, 25603, 26455, 27291, 28113, 28922, 29716, 30497, + 31266, 32023, 32767 + }; + + /*--------------------------------------------------------------------------*/ +#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] log2.tab, 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 +----------------------------------------------------------------------------*/ + |