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/c1035pf.c 35b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Functions: q_p 36b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber build_code 37b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber code_10i40_35bits 38b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 39b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 40b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Date: 09/28/2000 41b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 42b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 43b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REVISION HISTORY 44b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 45b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Updated template. Cleaned up code. Passing in a pointer to 46b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber overflow flag for build_code() and code_10i40_35bits() functions. 47b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Removed unnecessary header files. 48b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 49b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: 50b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 1. Eliminated unused include files. 51b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 2. Replaced array addressing by pointers 52b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 3. Eliminated math operations that unnecessary checked for 53b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber saturation 54b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 4. Replaced for-loops with memset() 55b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 56b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Changed function name to pv_round to avoid conflict with 57b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber round function in C standard library. 58b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 59b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Replaced OSCL mem type functions and eliminated include 60b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber files that now are chosen by OSCL definitions 61b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 62b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Replaced "int" and/or "char" with OSCL defined types. 63b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 64b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: 65b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 66b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 67b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber MODULE DESCRIPTION 68b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 69b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber This file contains the function that searches a 35 bit algebraic codebook 70b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber containing 10 pulses in a frame of 40 samples. 71b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 72b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 73b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber*/ 74b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 75b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 76b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; INCLUDES 77b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 78b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include <string.h> 79b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 80b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "c1035pf.h" 81b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "cnst.h" 82b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "basic_op.h" 83b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "inv_sqrt.h" 84b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "set_sign.h" 85b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "cor_h.h" 86b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "cor_h_x.h" 87b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "s10_8pf.h" 88b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 89b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 90b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; MACROS 91b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; [Define module specific macros here] 92b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 93b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 94b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 95b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 96b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; DEFINES 97b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; [Include all pre-processor statements here. Include conditional 98b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; compile variables also.] 99b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 100b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#define NB_PULSE 10 101b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 102b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 103b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; LOCAL FUNCTION DEFINITIONS 104b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; [List function prototypes here] 105b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 106b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 107b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 108b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; LOCAL VARIABLE DEFINITIONS 109b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; [Variable declaration - defined here and used outside this module] 110b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 111b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 112b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/* 113b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 114b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber FUNCTION NAME: q_p 115b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 116b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber INPUT AND OUTPUT DEFINITIONS 117b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 118b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Inputs: 119b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber pShift_reg = pointer to Old CN generator shift register state (Word32) 120b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber no_bits = Number of bits (Word16) 121b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 122b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Outputs: 123b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber pShift_reg -> Updated CN generator shift register state 124b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 125b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Returns: 126b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber noise_bits = Generated random integer value (Word16) 127b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 128b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Global Variables Used: 129b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 130b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 131b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Local Variables Needed: 132b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 133b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 134b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 135b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber FUNCTION DESCRIPTION 136b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 137b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber This is a local function that determnes the index of the pulses by looking up 138b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber the gray encoder table 139b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 140b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 141b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REQUIREMENTS 142b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 143b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 144b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 145b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 146b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REFERENCES 147b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 148b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber c1035pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 149b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 150b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 151b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber PSEUDO-CODE 152b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 153b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Hubervoid q_p ( 154b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *ind, // Pulse position 155b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 n // Pulse number 156b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber) 157b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber{ 158b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 tmp; 159b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 160b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber tmp = *ind; 161b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 162b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if (sub (n, 5) < 0) 163b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 164b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *ind = (tmp & 0x8) | gray[tmp & 0x7]; 165b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 166b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 167b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 168b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *ind = gray[tmp & 0x7]; 169b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 170b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber} 171b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 172b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 173b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber RESOURCES USED [optional] 174b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 175b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber When the code is written for a specific target processor the 176b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber the resources used should be documented below. 177b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 178b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber HEAP MEMORY USED: x bytes 179b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 180b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber STACK MEMORY USED: x bytes 181b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 182b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 183b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber used to represent cycle count for each subroutine 184b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber called) 185b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber where: (cycle count variable) = cycle count for [subroutine 186b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber name] 187b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 188b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 189b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber CAUTION [optional] 190b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber [State any special notes, constraints or cautions for users of this function] 191b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 192b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 193b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber*/ 194b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 195b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 196b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; FUNCTION CODE 197b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 198b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 199b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Hubervoid q_p( 200b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *pInd, /* Pulse position */ 201b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 n /* Pulse number */ 202b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber) 203b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber{ 204b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 tmp; 205b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 206b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber tmp = *pInd; 207b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 208b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if (n < 5) 209b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 210b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *pInd = (tmp & 0x8) | gray[tmp & 0x7]; 211b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 212b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 213b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 214b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *pInd = gray[tmp & 0x7]; 215b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 216b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber} 217b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 218b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/* 219b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 220b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber FUNCTION NAME: build_code 221b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 222b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber INPUT AND OUTPUT DEFINITIONS 223b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 224b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Inputs: 225b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber pSeed = pointer to the Old CN generator shift register state (Word32) 226b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber n_param = Number of parameters to randomize (Word16) 227b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber param_size_table = table holding paameter sizes (Word16) 228b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber param[] = array to hold CN generated paramters (Word16) 229b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber pOverflow = pointer to overflow flag (Flag) 230b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 231b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Outputs: 232b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber param[] = CN generated parameters (Word16) 233b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber pSeed = Updated CN generator shift register state (Word16) 234b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber pOverflow -> 1 if overflow occured 235b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 236b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Returns: 237b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 238b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 239b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Global Variables Used: 240b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 241b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 242b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Local Variables Needed: 243b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 244b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 245b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 246b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber FUNCTION DESCRIPTION 247b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 248b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber This function builds the codeword, the filtered codeword and index of the 249b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber codevector, based on the signs and positions of 10 pulses. 250b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 251b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REQUIREMENTS 252b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 253b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 254b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 255b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 256b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REFERENCES 257b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 258b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber c1035pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 259b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 260b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 261b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber PSEUDO-CODE 262b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huberstatic void build_code ( 263b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 codvec[], // (i) : position of pulses 264b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 sign[], // (i) : sign of d[n] 265b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 cod[], // (o) : innovative code vector 266b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 h[], // (i) : impulse response of weighted synthesis filter 267b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 y[], // (o) : filtered innovative code 268b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 indx[] // (o) : index of 10 pulses (sign+position) 269b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber) 270b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber{ 271b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 i, j, k, track, index, _sign[NB_PULSE]; 272b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *p0, *p1, *p2, *p3, *p4, *p5, *p6, *p7, *p8, *p9; 273b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word32 s; 274b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 275b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for (i = 0; i < L_CODE; i++) 276b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 277b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber cod[i] = 0; 278b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 279b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for (i = 0; i < NB_TRACK; i++) 280b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 281b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber indx[i] = -1; 282b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 283b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 284b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for (k = 0; k < NB_PULSE; k++) 285b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 286b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber // read pulse position 287b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber i = codvec[k]; 288b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber // read sign 289b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber j = sign[i]; 290b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 291b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber index = mult (i, 6554); // index = pos/5 292b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber // track = pos%5 293b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber track = sub (i, extract_l (L_shr (L_mult (index, 5), 1))); 294b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 295b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if (j > 0) 296b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 297b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber cod[i] = add (cod[i], 4096); 298b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber _sign[k] = 8192; 299b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 300b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 301b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 302b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 303b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber cod[i] = sub (cod[i], 4096); 304b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber _sign[k] = -8192; 305b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber index = add (index, 8); 306b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 307b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 308b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if (indx[track] < 0) 309b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 310b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber indx[track] = index; 311b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 312b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 313b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 314b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if (((index ^ indx[track]) & 8) == 0) 315b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 316b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber // sign of 1st pulse == sign of 2nd pulse 317b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 318b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if (sub (indx[track], index) <= 0) 319b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 320b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber indx[track + 5] = index; 321b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 322b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 323b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 324b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber indx[track + 5] = indx[track]; 325b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber indx[track] = index; 326b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 327b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 328b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 329b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 330b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber // sign of 1st pulse != sign of 2nd pulse 331b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 332b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if (sub ((Word16)(indx[track] & 7), (Word16)(index & 7)) <= 0) 333b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 334b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber indx[track + 5] = indx[track]; 335b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber indx[track] = index; 336b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 337b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 338b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 339b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber indx[track + 5] = index; 340b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 341b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 342b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 343b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 344b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 345b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p0 = h - codvec[0]; 346b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p1 = h - codvec[1]; 347b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p2 = h - codvec[2]; 348b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p3 = h - codvec[3]; 349b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p4 = h - codvec[4]; 350b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p5 = h - codvec[5]; 351b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p6 = h - codvec[6]; 352b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p7 = h - codvec[7]; 353b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p8 = h - codvec[8]; 354b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p9 = h - codvec[9]; 355b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 356b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for (i = 0; i < L_CODE; i++) 357b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 358b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s = 0; 359b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s = L_mac (s, *p0++, _sign[0]); 360b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s = L_mac (s, *p1++, _sign[1]); 361b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s = L_mac (s, *p2++, _sign[2]); 362b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s = L_mac (s, *p3++, _sign[3]); 363b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s = L_mac (s, *p4++, _sign[4]); 364b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s = L_mac (s, *p5++, _sign[5]); 365b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s = L_mac (s, *p6++, _sign[6]); 366b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s = L_mac (s, *p7++, _sign[7]); 367b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s = L_mac (s, *p8++, _sign[8]); 368b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s = L_mac (s, *p9++, _sign[9]); 369b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber y[i] = pv_round (s); 370b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 371b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber} 372b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 373b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 374b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber RESOURCES USED [optional] 375b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 376b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber When the code is written for a specific target processor the 377b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber the resources used should be documented below. 378b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 379b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber HEAP MEMORY USED: x bytes 380b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 381b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber STACK MEMORY USED: x bytes 382b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 383b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 384b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber used to represent cycle count for each subroutine 385b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber called) 386b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber where: (cycle count variable) = cycle count for [subroutine 387b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber name] 388b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 389b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 390b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber CAUTION [optional] 391b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber [State any special notes, constraints or cautions for users of this function] 392b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 393b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 394b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber*/ 395b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 396b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 397b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; FUNCTION CODE 398b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 399b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huberstatic void build_code( 400b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 codvec[], /* (i) : position of pulses */ 401b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 sign[], /* (i) : sign of d[n] */ 402b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 cod[], /* (o) : innovative code vector */ 403b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 h[], /* (i) : impulse response of weighted synthesis filter*/ 404b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 y[], /* (o) : filtered innovative code */ 405b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 indx[], /* (o) : index of 10 pulses (sign+position) */ 406b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Flag *pOverflow /* i/o : overflow Flag */ 407b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber) 408b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber{ 409b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 i, k, track, index, _sign[NB_PULSE]; 410b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *p0, *p1, *p2, *p3, *p4, *p5, *p6, *p7, *p8, *p9; 411b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word32 s; 412b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 temp; 413b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *p__sign; 414b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *p_y; 415b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *p_codvec; 416b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 417b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber OSCL_UNUSED_ARG(pOverflow); 418b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 419b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber memset(cod, 0, L_CODE*sizeof(*cod)); 420b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber memset(indx, 0xFF, NB_TRACK*sizeof(*indx)); 421b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 422b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p__sign = _sign; 423b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 424b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p0 = &codvec[0]; 425b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 426b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for (k = 0; k < NB_PULSE; k++) 427b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 428b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* read pulse position */ 429b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber i = *(p0++); 430b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* read sign */ 431b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 432b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber index = ((Word32)i * 6554) >> 15; /* index = pos/5 */ 433b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 434b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* track = pos%5 */ 435b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* track = sub (i, extract_l (L_shr (L_mult (index, 5), 1))); */ 436b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber track = i - (index * 5); 437b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 438b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if (sign[i] > 0) 439b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 440b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber cod[i] += 4096; 441b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *(p__sign++) = 8192; 442b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 443b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 444b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 445b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 446b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber cod[i] -= 4096; 447b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *(p__sign++) = -8192; 448b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* index = add (index, 8); */ 449b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber index += 8; 450b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 451b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 452b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p1 = &indx[track]; 453b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 454b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber temp = *p1; 455b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 456b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if (temp < 0) 457b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 458b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *p1 = index; 459b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 460b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 461b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 462b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if (((index ^ temp) & 8) == 0) 463b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 464b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* sign of 1st pulse == sign of 2nd pulse */ 465b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 466b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* if (sub (indx[track], index) <= 0) */ 467b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if (temp <= index) 468b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 469b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *(p1 + 5) = index; 470b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 471b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 472b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 473b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *(p1 + 5) = temp; 474b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *p1 = index; 475b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 476b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 477b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 478b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 479b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* sign of 1st pulse != sign of 2nd pulse */ 480b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 481b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* if (sub ((Word16)(indx[track] & 7), (Word16)(index & 7)) <= 0) */ 482b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if ((temp & 7) <= (index & 7)) 483b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 484b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *(p1 + 5) = temp; 485b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *p1 = index; 486b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 487b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 488b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 489b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *(p1 + 5) = index; 490b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 491b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 492b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 493b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 494b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 495b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p_codvec = &codvec[0]; 496b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 497b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p0 = h - *(p_codvec++); 498b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p1 = h - *(p_codvec++); 499b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p2 = h - *(p_codvec++); 500b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p3 = h - *(p_codvec++); 501b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p4 = h - *(p_codvec++); 502b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p5 = h - *(p_codvec++); 503b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p6 = h - *(p_codvec++); 504b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p7 = h - *(p_codvec++); 505b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p8 = h - *(p_codvec++); 506b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p9 = h - *(p_codvec++); 507b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 508b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p_y = y; 509b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 510b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for (i = L_CODE; i != 0; i--) 511b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 512b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber p__sign = _sign; 513b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 514b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s = (*p0++ * *(p__sign++)) >> 7; 515b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s += (*p1++ * *(p__sign++)) >> 7; 516b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s += (*p2++ * *(p__sign++)) >> 7; 517b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s += (*p3++ * *(p__sign++)) >> 7; 518b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s += (*p4++ * *(p__sign++)) >> 7; 519b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s += (*p5++ * *(p__sign++)) >> 7; 520b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s += (*p6++ * *(p__sign++)) >> 7; 521b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s += (*p7++ * *(p__sign++)) >> 7; 522b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s += (*p8++ * *(p__sign++)) >> 7; 523b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber s += (*p9++ * *(p__sign++)) >> 7; 524b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 525b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber *(p_y++) = (s + 0x080) >> 8; 526b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 527b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 528b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber} 529b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 530b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/* 531b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 532b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber FUNCTION NAME: code_10i40_35bits 533b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 534b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber INPUT AND OUTPUT DEFINITIONS 535b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 536b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Inputs: 537b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber pSeed = pointer to the Old CN generator shift register state (Word32) 538b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber n_param = Number of parameters to randomize (Word16) 539b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber param_size_table = table holding paameter sizes (Word16) 540b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber param[] = array to hold CN generated paramters (Word16) 541b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber pOverflow = pointer to overflow flag (Flag) 542b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 543b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Outputs: 544b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber param[] = CN generated parameters (Word16) 545b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber pSeed = Updated CN generator shift register state (Word16) 546b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber pOverflow -> 1 if overflow occured 547b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 548b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Returns: 549b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 550b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 551b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Global Variables Used: 552b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 553b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 554b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Local Variables Needed: 555b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 556b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 557b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 558b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber FUNCTION DESCRIPTION 559b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 560b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber This function searches a 35 bit algebraic codebook containing 10 pulses in a 561b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber frame of 40 samples. 562b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 563b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber The code contains 10 nonzero pulses: i0...i9. 564b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber All pulses can have two possible amplitudes: +1 or -1. 565b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber The 40 positions in a subframe are divided into 5 tracks of 566b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber interleaved positions. Each track contains two pulses. 567b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber The pulses can have the following possible positions: 568b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 569b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber i0, i5 : 0, 5, 10, 15, 20, 25, 30, 35. 570b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber i1, i6 : 1, 6, 11, 16, 21, 26, 31, 36. 571b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber i2, i7 : 2, 7, 12, 17, 22, 27, 32, 37. 572b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber i3, i8 : 3, 8, 13, 18, 23, 28, 33, 38. 573b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber i4, i9 : 4, 9, 14, 19, 24, 29, 34, 39. 574b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 575b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Each pair of pulses require 1 bit for their signs and 6 bits for their 576b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber positions (3 bits + 3 bits). This results in a 35 bit codebook. 577b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber The function determines the optimal pulse signs and positions, builds 578b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber the codevector, and computes the filtered codevector. 579b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 580b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 581b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REQUIREMENTS 582b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 583b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 584b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 585b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 586b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REFERENCES 587b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 588b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber c1035pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 589b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 590b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 591b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber PSEUDO-CODE 592b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Hubervoid code_10i40_35bits ( 593b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 x[], // (i) : target vector 594b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 cn[], // (i) : residual after long term prediction 595b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 h[], // (i) : impulse response of weighted synthesis filter 596b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber // h[-L_subfr..-1] must be set to zero 597b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 cod[], // (o) : algebraic (fixed) codebook excitation 598b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 y[], // (o) : filtered fixed codebook excitation 599b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 indx[] // (o) : index of 10 pulses (sign + position) 600b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber) 601b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber{ 602b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 ipos[NB_PULSE], pos_max[NB_TRACK], codvec[NB_PULSE]; 603b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 dn[L_CODE], sign[L_CODE]; 604b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 rr[L_CODE][L_CODE], i; 605b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 606b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber cor_h_x (h, x, dn, 2); 607b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber set_sign12k2 (dn, cn, sign, pos_max, NB_TRACK, ipos, STEP); 608b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber cor_h (h, sign, rr); 609b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 610b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber search_10and8i40 (NB_PULSE, STEP, NB_TRACK, 611b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber dn, rr, ipos, pos_max, codvec); 612b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 613b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber build_code (codvec, sign, cod, h, y, indx); 614b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for (i = 0; i < 10; i++) 615b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 616b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber q_p (&indx[i], i); 617b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 618b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber return; 619b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber} 620b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 621b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 622b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber RESOURCES USED [optional] 623b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 624b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber When the code is written for a specific target processor the 625b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber the resources used should be documented below. 626b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 627b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber HEAP MEMORY USED: x bytes 628b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 629b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber STACK MEMORY USED: x bytes 630b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 631b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 632b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber used to represent cycle count for each subroutine 633b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber called) 634b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber where: (cycle count variable) = cycle count for [subroutine 635b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber name] 636b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 637b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 638b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber CAUTION [optional] 639b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber [State any special notes, constraints or cautions for users of this function] 640b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 641b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 642b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber*/ 643b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 644b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 645b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; FUNCTION CODE 646b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 647b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Hubervoid code_10i40_35bits( 648b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 x[], /* (i) : target vector */ 649b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 cn[], /* (i) : residual after long term prediction */ 650b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 h[], /* (i) : impulse response of weighted synthesis filter 651b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber h[-L_subfr..-1] must be set to zero */ 652b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 cod[], /* (o) : algebraic (fixed) codebook excitation */ 653b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 y[], /* (o) : filtered fixed codebook excitation */ 654b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 indx[], /* (o) : index of 10 pulses (sign + position) */ 655b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Flag *pOverflow /* (i/o) : overflow Flag */ 656b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber) 657b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber{ 658b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 ipos[NB_PULSE], pos_max[NB_TRACK], codvec[NB_PULSE]; 659b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 dn[L_CODE], sign[L_CODE]; 660b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 rr[L_CODE][L_CODE], i; 661b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 662b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber cor_h_x(h, x, dn, 2, pOverflow); 663b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber set_sign12k2(dn, cn, sign, pos_max, NB_TRACK, ipos, STEP, pOverflow); 664b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber cor_h(h, sign, rr, pOverflow); 665b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 666b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber search_10and8i40(NB_PULSE, STEP, NB_TRACK, 667b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber dn, rr, ipos, pos_max, codvec, pOverflow); 668b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 669b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber build_code(codvec, sign, cod, h, y, indx, pOverflow); 670b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for (i = 0; i < 10; i++) 671b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 672b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber q_p(&indx[i], i); 673b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 674b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber return; 675b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber} 676b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 677