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Diffstat (limited to 'media/libstagefright/codecs/amrnb/enc/src/lag_wind_tab.cpp')
| -rw-r--r-- | media/libstagefright/codecs/amrnb/enc/src/lag_wind_tab.cpp | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrnb/enc/src/lag_wind_tab.cpp b/media/libstagefright/codecs/amrnb/enc/src/lag_wind_tab.cpp new file mode 100644 index 0000000..b0f5b3a --- /dev/null +++ b/media/libstagefright/codecs/amrnb/enc/src/lag_wind_tab.cpp @@ -0,0 +1,233 @@ +/* ------------------------------------------------------------------ + * 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. +****************************************************************************************/ +/* +------------------------------------------------------------------------------ + + Pathname: .audio/gsm-amr/c/src/lag_wind_tab.c + + Date: 01/29/2002 + +------------------------------------------------------------------------------ + REVISION HISTORY + + Description: Added #ifdef __cplusplus and removed "extern" from table + definition. Removed corresponding header file from Include + section. + + Description: Put "extern" back. + + Description: + +------------------------------------------------------------------------------ + INPUT AND OUTPUT DEFINITIONS + + Inputs: + None + + Local Stores/Buffers/Pointers Needed: + None + + Global Stores/Buffers/Pointers Needed: + None + + Outputs: + None + + Pointers and Buffers Modified: + None + + Local Stores Modified: + None + + Global Stores Modified: + None + +------------------------------------------------------------------------------ + FUNCTION DESCRIPTION + + File : lag_wind.tab + Purpose : Table of lag_window for autocorrelation. + + *-----------------------------------------------------* + | Table of lag_window for autocorrelation. | + | | + | noise floor = 1.0001 = (0.9999 on r[1] ..r[10]) | + | Bandwitdh expansion = 60 Hz | + | | + | | + | lag_wind[0] = 1.00000000 (not stored) | + | lag_wind[1] = 0.99879038 | + | lag_wind[2] = 0.99546897 | + | lag_wind[3] = 0.98995781 | + | lag_wind[4] = 0.98229337 | + | lag_wind[5] = 0.97252619 | + | lag_wind[6] = 0.96072036 | + | lag_wind[7] = 0.94695264 | + | lag_wind[8] = 0.93131179 | + | lag_wind[9] = 0.91389757 | + | lag_wind[10]= 0.89481968 | + ------------------------------------------------------- + +------------------------------------------------------------------------------ + REQUIREMENTS + + None + +------------------------------------------------------------------------------ + REFERENCES + + None + +------------------------------------------------------------------------------ + PSEUDO-CODE + + +------------------------------------------------------------------------------ + RESOURCES USED + When the code is written for a specific target processor the + the resources used should be documented below. + + STACK USAGE: [stack count for this module] + [variable to represent + stack usage for each subroutine called] + + where: [stack usage variable] = stack usage for [subroutine + name] (see [filename].ext) + + DATA MEMORY USED: x words + + PROGRAM MEMORY USED: x words + + CLOCK CYCLES: [cycle count equation for this module] + [variable + used to represent cycle count for each subroutine + called] + + where: [cycle count variable] = cycle count for [subroutine + name] (see [filename].ext) + +------------------------------------------------------------------------------ +*/ + + +/*---------------------------------------------------------------------------- +; INCLUDES +----------------------------------------------------------------------------*/ +#include "typedef.h" +#include "lag_wind_tab.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 + ; Function Prototype declaration + ----------------------------------------------------------------------------*/ + + + /*---------------------------------------------------------------------------- + ; LOCAL STORE/BUFFER/POINTER DEFINITIONS + ; Variable declaration - defined here and used outside this module + ----------------------------------------------------------------------------*/ + const Word16 lag_h[10] = + { + 32728, + 32619, + 32438, + 32187, + 31867, + 31480, + 31029, + 30517, + 29946, + 29321 + }; + + const Word16 lag_l[10] = + { + 11904, + 17280, + 30720, + 25856, + 24192, + 28992, + 24384, + 7360, + 19520, + 14784 + }; + + /*---------------------------------------------------------------------------- + ; EXTERNAL FUNCTION REFERENCES + ; Declare functions defined elsewhere and referenced in this module + ----------------------------------------------------------------------------*/ + + + /*---------------------------------------------------------------------------- + ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES + ; Declare variables used in this module but defined elsewhere + ----------------------------------------------------------------------------*/ + + + /*--------------------------------------------------------------------------*/ +#ifdef __cplusplus +} +#endif + +/*---------------------------------------------------------------------------- +; FUNCTION CODE +----------------------------------------------------------------------------*/ + +/*---------------------------------------------------------------------------- +; Define all local variables +----------------------------------------------------------------------------*/ + + +/*---------------------------------------------------------------------------- +; Function body here +----------------------------------------------------------------------------*/ + + +/*---------------------------------------------------------------------------- +; Return nothing or data or data pointer +----------------------------------------------------------------------------*/ + |