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 26.173 22a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ANSI-C code for the Adaptive Multi-Rate - Wideband (AMR-WB) speech codec 23a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Available from http://www.3gpp.org 24a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 25a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber(C) 2007, 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 Filename: dec_acelp_2p_in_64.cpp 35a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 36a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Date: 05/08/2007 37a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 38a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 39a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber REVISION HISTORY 40a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 41a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 42a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Description: 43a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 44a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 45a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber INPUT AND OUTPUT DEFINITIONS 46a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 47a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber int16 index, (i): 12 bits index 48a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber int16 code[] (o): Q9 algebraic (fixed) codebook excitation 49a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 50a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 51a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber FUNCTION DESCRIPTION 52a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 53a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 12 bits algebraic codebook decoder. 54a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 2 tracks x 32 positions per track = 64 samples. 55a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 56a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 12 bits --> 2 pulses in a frame of 64 samples. 57a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 58a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber All pulses can have two (2) possible amplitudes: +1 or -1. 59a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Each pulse can have 32 possible positions. 60a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 61a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 62a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber REQUIREMENTS 63a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 64a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 65a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 66a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber REFERENCES 67a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 68a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 69a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber PSEUDO-CODE 70a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 71a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 72a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber*/ 73a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 74a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 75a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 76a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; INCLUDES 77a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 78a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 79a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "pv_amr_wb_type_defs.h" 80a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "pvamrwbdecoder_basic_op.h" 81a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "pvamrwbdecoder_cnst.h" 82a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "pvamrwbdecoder_acelp.h" 83a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 84a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 85a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; MACROS 86a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; Define module specific macros here 87a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 88a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 89a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 90a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 91a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; DEFINES 92a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; Include all pre-processor statements here. Include conditional 93a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; compile variables also. 94a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 95a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#define L_CODE 64 /* codevector length */ 96a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#define NB_TRACK 2 /* number of track */ 97a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#define NB_POS 32 /* number of position */ 98a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 99a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 100a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 101a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; LOCAL FUNCTION DEFINITIONS 102a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; Function Prototype declaration 103a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 104a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 105a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 106a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; LOCAL STORE/BUFFER/POINTER DEFINITIONS 107a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; Variable declaration - defined here and used outside this module 108a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 109a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 110a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 111a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; EXTERNAL FUNCTION REFERENCES 112a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; Declare functions defined elsewhere and referenced in this module 113a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 114a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 115a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 116a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES 117a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; Declare variables used in this module but defined elsewhere 118a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 119a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 120a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 121a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; FUNCTION CODE 122a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 123a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 124a30d40083856cb4edd225faf8b488fab156e5976Andreas Hubervoid dec_acelp_2p_in_64( 125a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber int16 index, /* (i): 12 bits index */ 126a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber int16 code[] /* (o): Q9 algebraic (fixed) codebook excitation */ 127a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber) 128a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber{ 129a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber int16 i; 130a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 131a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber pv_memset(code, 0, L_CODE*sizeof(*code)); 132a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 133a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* decode the positions and signs of pulses and build the codeword */ 134a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 135a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber i = (index >> 5) & 0x003E; 136a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 137a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber if (((index >> 6) & NB_POS) == 0) 138a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 139a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber code[i] = 512; 140a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 141a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber else 142a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 143a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber code[i] = -512; 144a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 145a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 146a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber i = ((index & 0x001F) << 1) + 1; 147a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 148a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber if ((index & NB_POS) == 0) 149a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 150a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber code[i] = 512; 151a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 152a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber else 153a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 154a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber code[i] = -512; 155a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } 156a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 157a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber} 158