1a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/* ------------------------------------------------------------------ 2a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Copyright (C) 1998-2009 PacketVideo 3a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * 4a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * you may not use this file except in compliance with the License. 6a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * You may obtain a copy of the License at 7a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * 8a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * 10a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Unless required by applicable law or agreed to in writing, software 11a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * express or implied. 14a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * See the License for the specific language governing permissions 15a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * and limitations under the License. 16a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * ------------------------------------------------------------------- 17a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber */ 18a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/**************************************************************************************** 19a30d40083856cb4edd225faf8b488fab156e5976Andreas HuberPortions of this file are derived from the following 3GPP standard: 20a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 21a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 3GPP TS 26.073 22a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 23a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Available from http://www.3gpp.org 24a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 25a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 26a30d40083856cb4edd225faf8b488fab156e5976Andreas HuberPermission to distribute, modify and use this file under the standard license 27a30d40083856cb4edd225faf8b488fab156e5976Andreas Huberterms listed above has been obtained from the copyright holder. 28a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber****************************************************************************************/ 29a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/* 30a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 31a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 32a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 33a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 34a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Pathname: ./audio/gsm-amr/c/src/d_plsf_3.c 35a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Functions: D_plsf_3 36a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 37a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ------------------------------------------------------------------------------ 38a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber INPUT AND OUTPUT DEFINITIONS 39a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 40a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Inputs: 41a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st -- Pointer to type struct D_plsfState 42a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber mode -- enum Mode -- coder mode 43a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber bfi -- Word16 -- bad frame indicator (set to 1 if a bad frame is received) 44a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber indice -- Pointer to type Word16 -- quantization indices of 45a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 3 submatrices, Q0 46a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 47a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Outputs: 48a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st -- Pointer to type struct D_plsfState 49a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsp1_q -- Pointer to type Word16 -- quantized 1st LSP vector Q15 50a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow -- Pointer to type Flag -- Flag set when overflow occurs 51a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 52a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Returns: 53a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber None. 54a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 55a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Global Variables Used: 56a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber None 57a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 58a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Local Variables Needed: 59a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber None 60a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 61a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 62a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber FUNCTION DESCRIPTION 63a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 64a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber PURPOSE: Decodes the LSP parameters using the received quantization 65a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber indices.1st order MA prediction and split by 3 vector 66a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber quantization (split-VQ) 67a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 68a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 69a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber REQUIREMENTS 70a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 71a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 72a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 73a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 74a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber REFERENCES 75a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 76a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber d_plsf_3.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 77a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 78a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 79a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber PSEUDO-CODE 80a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 81a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 82a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 83a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 84a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber RESOURCES USED 85a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber When the code is written for a specific target processor the 86a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber the resources used should be documented below. 87a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 88a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber STACK USAGE: [stack count for this module] + [variable to represent 89a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber stack usage for each subroutine called] 90a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 91a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber where: [stack usage variable] = stack usage for [subroutine 92a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber name] (see [filename].ext) 93a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 94a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber DATA MEMORY USED: x words 95a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 96a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber PROGRAM MEMORY USED: x words 97a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 98a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber CLOCK CYCLES: [cycle count equation for this module] + [variable 99a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber used to represent cycle count for each subroutine 100a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber called] 101a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 102a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber where: [cycle count variable] = cycle count for [subroutine 103a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber name] (see [filename].ext) 104a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 105a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 106a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber*/ 107a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 108a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 109a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 110a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; INCLUDES 111a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 112a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "d_plsf.h" 113a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "typedef.h" 114a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "basic_op.h" 115a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "lsp_lsf.h" 116a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "reorder.h" 117a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "copy.h" 118a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "q_plsf_3_tbl.h" 119a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 120a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 121a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 122a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; MACROS 123a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; Define module specific macros here 124a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 125a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 126a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 127a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 128a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; DEFINES 129a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; Include all pre-processor statements here. Include conditional 130a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; compile variables also. 131a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 132a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#define ALPHA 29491 /* ALPHA -> 0.9 */ 133a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#define ONE_ALPHA 3277 /* ONE_ALPHA-> (1.0-ALPHA) */ 134a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 135a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 136a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 137a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; LOCAL FUNCTION DEFINITIONS 138a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; Function Prototype declaration 139a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 140a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 141a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 142a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 143a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; LOCAL STORE/BUFFER/POINTER DEFINITIONS 144a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; Variable declaration - defined here and used outside this module 145a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 146a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 147a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 148a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; EXTERNAL FUNCTION REFERENCES 149a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; Declare functions defined elsewhere and referenced in this module 150a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 151a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 152a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 153a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES 154a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; Declare variables used in this module but defined elsewhere 155a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 156a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 157a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 158a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 159a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; FUNCTION CODE 160a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 161a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 162a30d40083856cb4edd225faf8b488fab156e5976Andreas Hubervoid D_plsf_3( 163a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber D_plsfState *st, /* i/o: State struct */ 164a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber enum Mode mode, /* i : coder mode */ 165a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 bfi, /* i : bad frame indicator (set to 1 if a */ 166a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* bad frame is received) */ 167a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 * indice, /* i : quantization indices of 3 submatrices, Q0 */ 168a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 * lsp1_q, /* o : quantized 1st LSP vector, Q15 */ 169a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Flag *pOverflow /* o : Flag set when overflow occurs */ 170a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber) 171a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber{ 172a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 i; 173a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 temp; 174a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 index; 175a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 176a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 lsf1_r[M]; 177a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 lsf1_q[M]; 178a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 179a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber if (bfi != 0) /* if bad frame */ 180a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 181a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* use the past LSFs slightly shifted towards their mean */ 182a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 183a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber for (i = 0; i < M; i++) 184a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 185a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* lsfi_q[i] = ALPHA*past_lsf_q[i] + ONE_ALPHA*mean_lsf[i]; */ 186a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = 187a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber mult( 188a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st->past_lsf_q[i], 189a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ALPHA, 190a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 191a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 192a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index = 193a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber mult( 194a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber mean_lsf_3[i], 195a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ONE_ALPHA, 196a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 197a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 198a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_q[i] = 199a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber add( 200a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index, 201a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp, 202a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 203a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 204a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 205a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* estimate past quantized residual to be used in next frame */ 206a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber if (mode != MRDTX) 207a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 208a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber for (i = 0; i < M; i++) 209a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 210a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* temp = mean_lsf[i] + past_r2_q[i] * PRED_FAC; */ 211a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 212a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = 213a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber mult( 214a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st->past_r_q[i], 215a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pred_fac_3[i], 216a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 217a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 218a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = 219a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber add( 220a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber mean_lsf_3[i], 221a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp, 222a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 223a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 224a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st->past_r_q[i] = 225a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber sub( 226a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_q[i], 227a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp, 228a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 229a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 230a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 231a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } /* if (mode == MRDTX) */ 232a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber else 233a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 234a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber for (i = 0; i < M; i++) 235a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 236a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* temp = mean_lsf[i] + past_r2_q[i]; */ 237a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 238a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = 239a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber add( 240a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber mean_lsf_3[i], 241a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st->past_r_q[i], 242a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 243a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 244a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st->past_r_q[i] = 245a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber sub( 246a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_q[i], 247a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp, 248a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 249a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 250a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 251a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 252a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } /* if (bfi != 0) */ 253a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 254a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber else /* if good LSFs received */ 255a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 256a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 257a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 index_limit_1 = 0; 258a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 index_limit_2 = (DICO2_SIZE - 1) * 3; 259a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 index_limit_3 = 0; 260a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 261a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber const Word16 *p_cb1; 262a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber const Word16 *p_cb2; 263a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber const Word16 *p_cb3; 264a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber const Word16 *p_dico; 265a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 266a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 267a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber p_cb2 = dico2_lsf_3; /* size DICO2_SIZE*3 */ 268a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 269a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber if ((mode == MR475) || (mode == MR515)) 270a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { /* MR475, MR515 */ 271a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber p_cb1 = dico1_lsf_3; /* size DICO1_SIZE*3 */ 272a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber p_cb3 = mr515_3_lsf; /* size MR515_3_SIZE*4 */ 273a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 274a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index_limit_1 = (DICO1_SIZE - 1) * 3; 275a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index_limit_3 = (MR515_3_SIZE - 1) * 4; 276a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 277a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 278a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber else if (mode == MR795) 279a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { /* MR795 */ 280a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber p_cb1 = mr795_1_lsf; /* size MR795_1_SIZE*3 */ 281a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber p_cb3 = dico3_lsf_3; /* size DICO3_SIZE*4 */ 282a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 283a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index_limit_1 = (MR795_1_SIZE - 1) * 3; 284a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index_limit_3 = (DICO3_SIZE - 1) * 4; 285a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 286a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 287a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber else 288a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { /* MR59, MR67, MR74, MR102, MRDTX */ 289a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber p_cb1 = dico1_lsf_3; /* size DICO1_SIZE*3 */ 290a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber p_cb3 = dico3_lsf_3; /* size DICO3_SIZE*4 */ 291a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 292a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index_limit_1 = (DICO1_SIZE - 1) * 3; 293a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index_limit_3 = (DICO3_SIZE - 1) * 4; 294a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 295a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 296a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 297a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* decode prediction residuals from 3 received indices */ 298a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 299a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index = *indice++; 300a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 301a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* temp = 3*index; */ 302a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = index + (index << 1); 303a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 304a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber if (temp > index_limit_1) 305a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 306a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = index_limit_1; /* avoid buffer overrun */ 307a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 308a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 309a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber p_dico = &p_cb1[temp]; 310a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 311a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_r[0] = *p_dico++; 312a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_r[1] = *p_dico++; 313a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_r[2] = *p_dico++; 314a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 315a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index = *indice++; 316a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 317a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber if (mode == MR475 || mode == MR515) 318a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { /* MR475, MR515 only using every second entry */ 319a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index <<= 1; 320a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 321a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 322a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* temp = 3*index */ 323a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = index + (index << 1); 324a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 325a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber if (temp > index_limit_2) 326a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 327a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = index_limit_2; /* avoid buffer overrun */ 328a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 329a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 330a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber p_dico = &p_cb2[temp]; 331a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 332a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_r[3] = *p_dico++; 333a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_r[4] = *p_dico++; 334a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_r[5] = *p_dico++; 335a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 336a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index = *indice++; 337a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 338a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = index << 2; 339a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 340a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber if (temp > index_limit_3) 341a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 342a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = index_limit_3; /* avoid buffer overrun */ 343a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 344a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 345a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 346a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber p_dico = &p_cb3[temp]; 347a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 348a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_r[6] = *p_dico++; 349a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_r[7] = *p_dico++; 350a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_r[8] = *p_dico++; 351a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_r[9] = *p_dico++; 352a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 353a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* Compute quantized LSFs and update the past quantized residual */ 354a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 355a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber if (mode != MRDTX) 356a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 357a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber for (i = 0; i < M; i++) 358a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 359a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = 360a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber mult( 361a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st->past_r_q[i], 362a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pred_fac_3[i], 363a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 364a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 365a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = 366a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber add( 367a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber mean_lsf_3[i], 368a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp, 369a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 370a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 371a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_q[i] = 372a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber add( 373a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_r[i], 374a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp, 375a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 376a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 377a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st->past_r_q[i] = lsf1_r[i]; 378a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 379a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 380a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber else 381a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 382a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber for (i = 0; i < M; i++) 383a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 384a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp = 385a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber add( 386a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber mean_lsf_3[i], 387a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st->past_r_q[i], 388a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 389a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 390a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_q[i] = 391a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber add( 392a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_r[i], 393a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber temp, 394a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 395a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 396a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st->past_r_q[i] = lsf1_r[i]; 397a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 398a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 399a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 400a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 401a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 402a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* verification that LSFs has minimum distance of LSF_GAP Hz */ 403a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 404a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Reorder_lsf( 405a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_q, 406a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber LSF_GAP, 407a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber M, 408a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 409a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 410a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Copy( 411a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_q, 412a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st->past_lsf_q, 413a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber M); 414a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 415a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* convert LSFs to the cosine domain */ 416a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 417a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Lsf_lsp( 418a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsf1_q, 419a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber lsp1_q, 420a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber M, 421a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pOverflow); 422a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 423a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber return; 424a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber} 425a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 426a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/* 427a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 428a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber FUNCTION NAME: Init_D_plsf_3 429a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 430a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber INPUT AND OUTPUT DEFINITIONS 431a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 432a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Inputs: 433a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st = pointer to a structure of type D_plsfState 434a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber index = Word16, past_rq_init[] index [0, 7] 435a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 436a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Outputs: 437a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st = pointer to a structure of type D_plsfState 438a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 439a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Returns: 440a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber None 441a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 442a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Global Variables Used: 443a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber None. 444a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 445a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Local Variables Needed: 446a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber None. 447a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 448a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 449a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber FUNCTION DESCRIPTION 450a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 451a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber This function initializes the D_plsfState structure. 452a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 453a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 454a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber REQUIREMENTS 455a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 456a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber None. 457a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 458a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 459a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber REFERENCES 460a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 461a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber d_plsf_3.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 462a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 463a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 464a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber PSEUDO-CODE 465a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 466a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 467a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber RESOURCES USED [optional] 468a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 469a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber When the code is written for a specific target processor the 470a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber the resources used should be documented below. 471a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 472a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber HEAP MEMORY USED: x bytes 473a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 474a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber STACK MEMORY USED: x bytes 475a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 476a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 477a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber used to represent cycle count for each subroutine 478a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber called) 479a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber where: (cycle count variable) = cycle count for [subroutine 480a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber name] 481a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 482a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 483a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber CAUTION [optional] 484a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber [State any special notes, constraints or cautions for users of this function] 485a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 486a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 487a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber*/ 488a30d40083856cb4edd225faf8b488fab156e5976Andreas Hubervoid Init_D_plsf_3( 489a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber D_plsfState *st, /* i/o: State struct */ 490a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 index /* i : past_rq_init[] index [0, 7] */) 491a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber{ 492a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Copy( 493a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber &past_rq_init[index * M], 494a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber st->past_r_q, 495a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber M); 496a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber} 497