1b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/* ------------------------------------------------------------------ 2b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * Copyright (C) 1998-2009 PacketVideo 3b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * 4b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * you may not use this file except in compliance with the License. 6b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * You may obtain a copy of the License at 7b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * 8b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * 10b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * Unless required by applicable law or agreed to in writing, software 11b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * express or implied. 14b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * See the License for the specific language governing permissions 15b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * and limitations under the License. 16b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * ------------------------------------------------------------------- 17b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber */ 18b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/**************************************************************************************** 19b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas HuberPortions of this file are derived from the following 3GPP standard: 20b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 21b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 3GPP TS 26.073 22b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 23b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Available from http://www.3gpp.org 24b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 25b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 26b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas HuberPermission to distribute, modify and use this file under the standard license 27b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huberterms listed above has been obtained from the copyright holder. 28b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber****************************************************************************************/ 29b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/* 30b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 31b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 32b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 33b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 34b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Pathname: ./audio/gsm-amr/c/src/calc_cor.c 35b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 36b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Date: 06/12/2000 37b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 38b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 39b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REVISION HISTORY 40b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 41b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Initial Optimization 42b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 43b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Optimize code by calculating two correlation per iteration 44b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber of the outer loop. 45b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 46b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Delete psedocode 47b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 48b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Synchronized file with UMTS version 3.2.0. Updated coding 49b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber template. Removed unnecessary include files. 50b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 51b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Made the following changes per comments from Phase 2/3 review: 52b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 1. Defined one local variable per line. 53b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 54b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: 55b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 1. Eliminated unused include file typedef.h. 56b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 2. Replaced array addressing by pointers 57b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 3. Unrolled loops to save extra accesses to memory 58b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 59b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Replaced "int" and/or "char" with OSCL defined types. 60b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 61b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Using inline functions from fxp_arithmetic.h for mac operations. 62b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 63b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Replacing fxp_arithmetic.h with basic_op.h. 64b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 65b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: 66b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 67b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 68b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber*/ 69b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 70b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 71b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; INCLUDES 72b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 73b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "calc_cor.h" 74b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "basic_op.h" 75b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 76b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; MACROS 77b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; Define module specific macros here 78b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 79b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 80b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 81b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 82b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; DEFINES 83b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; Include all pre-processor statements here. Include conditional 84b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; compile variables also. 85b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 86b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 87b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 88b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; LOCAL FUNCTION DEFINITIONS 89b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; Function Prototype declaration 90b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 91b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 92b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 93b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; LOCAL STORE/BUFFER/POINTER DEFINITIONS 94b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; Variable declaration - defined here and used outside this module 95b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 96b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 97b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 98b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/* 99b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 100b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber FUNCTION NAME: comp_corr 101b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 102b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber INPUT AND OUTPUT DEFINITIONS 103b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 104b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Inputs: 105b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber scal_sig = array of input samples. (Word16) 106b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber L_frame = length of frame used to compute pitch(Word16) 107b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber lag_max = maximum lag (Word16) 108b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber lag_min = minimum lag (Word16) 109b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber corr = pointer to array of correlations corresponding to the selected 110b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber lags. (Word32) 111b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 112b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Outputs: 113b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber corr = pointer to array of correlations corresponding to the selected 114b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber lags. (Word32) 115b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 116b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Returns: 117b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber none 118b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 119b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Global Variables Used: 120b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber none 121b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 122b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Local Variables Needed: 123b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber none 124b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 125b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 126b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber FUNCTION DESCRIPTION 127b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 128b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber This function calculates all correlations of scal_sig[] in a given delay 129b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber range. 130b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 131b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber The correlation is given by 132b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 133b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber cor[t] = <scal_sig[n],scal_sig[n-t]>, t=lag_min,...,lag_max 134b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 135b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber The function outputs all of the correlations 136b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 137b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 138b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REQUIREMENTS 139b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 140b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber none 141b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 142b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 143b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REFERENCES 144b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 145b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber [1] calc_cor.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 146b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 147b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 148b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber PSEUDO-CODE 149b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 150b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Hubervoid comp_corr ( 151b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 scal_sig[], // i : scaled signal. 152b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 L_frame, // i : length of frame to compute pitch 153b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 lag_max, // i : maximum lag 154b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 lag_min, // i : minimum lag 155b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word32 corr[]) // o : correlation of selected lag 156b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber{ 157b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 i, j; 158b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *p, *p1; 159b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word32 t0; 160b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 161b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for (i = lag_max; i >= lag_min; i--) 162b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 163b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p = scal_sig; 164b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p1 = &scal_sig[-i]; 165b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t0 = 0; 166b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 167b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for (j = 0; j < L_frame; j++, p++, p1++) 168b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 169b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t0 = L_mac (t0, *p, *p1); 170b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 171b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber corr[-i] = t0; 172b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 173b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 174b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber return; 175b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber} 176b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 177b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 178b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber RESOURCES USED [optional] 179b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 180b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber When the code is written for a specific target processor the 181b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber the resources used should be documented below. 182b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 183b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber HEAP MEMORY USED: x bytes 184b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 185b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber STACK MEMORY USED: x bytes 186b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 187b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 188b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber used to represent cycle count for each subroutine 189b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber called) 190b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber where: (cycle count variable) = cycle count for [subroutine 191b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber name] 192b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 193b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 194b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber CAUTION [optional] 195b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber [State any special notes, constraints or cautions for users of this function] 196b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 197b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 198b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber*/ 199b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 200b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Hubervoid comp_corr( 201b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 scal_sig[], /* i : scaled signal. */ 202b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 L_frame, /* i : length of frame to compute pitch */ 203b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 lag_max, /* i : maximum lag */ 204b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 lag_min, /* i : minimum lag */ 205b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word32 corr[]) /* o : correlation of selected lag */ 206b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber{ 207b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 208b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 209b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 210b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 211b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /*--------------------------------------------------- 212b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ; lag_max and lag_min are typically negative numbers 213b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber -----------------------------------------------------*/ 214b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 215b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 216b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* PIT_MIN_MR122 18 Minimum pitch lag (MR122 mode) */ 217b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* PIT_MIN 20 Minimum pitch lag (all other modes) */ 218b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* PIT_MAX 143 Maximum pitch lag */ 219b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 220b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 221b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 i; 222b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 j; 223b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *p; 224b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *p1; 225b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *p2; 226b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *p_scal_sig; 227b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word32 t1; 228b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word32 t2; 229b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word32 t3; 230b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word32 t4; 231b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 232b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber corr = corr - lag_max ; 233b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p_scal_sig = &scal_sig[-lag_max]; 234b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 235b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for (i = ((lag_max - lag_min) >> 2) + 1; i > 0; i--) 236b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 237b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t1 = 0; 238b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t2 = 0; 239b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t3 = 0; 240b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t4 = 0; 241b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p = &scal_sig[0]; 242b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p1 = p_scal_sig++; 243b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p_scal_sig++; 244b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p2 = p_scal_sig++; 245b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p_scal_sig++; 246b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for (j = (L_frame >> 1); j != 0; j--) 247b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 248b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t1 = amrnb_fxp_mac_16_by_16bb((Word32) * (p), (Word32) * (p1++), t1); 249b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t2 = amrnb_fxp_mac_16_by_16bb((Word32) * (p), (Word32) * (p1), t2); 250b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t3 = amrnb_fxp_mac_16_by_16bb((Word32) * (p), (Word32) * (p2++), t3); 251b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t4 = amrnb_fxp_mac_16_by_16bb((Word32) * (p++), (Word32) * (p2), t4); 252b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 253b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t1 = amrnb_fxp_mac_16_by_16bb((Word32) * (p), (Word32) * (p1++), t1); 254b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t2 = amrnb_fxp_mac_16_by_16bb((Word32) * (p), (Word32) * (p1), t2); 255b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t3 = amrnb_fxp_mac_16_by_16bb((Word32) * (p), (Word32) * (p2++), t3); 256b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber t4 = amrnb_fxp_mac_16_by_16bb((Word32) * (p++), (Word32) * (p2), t4); 257b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 258b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 259b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *(corr++) = t1 << 1; 260b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *(corr++) = t2 << 1; 261b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *(corr++) = t3 << 1; 262b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *(corr++) = t4 << 1; 263b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 264b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 265b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 266b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber return; 267b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber} 268