1e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent/* 2e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent * 4e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent * Use of this source code is governed by a BSD-style license 5e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent * that can be found in the LICENSE file in the root of the source 6e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent * tree. An additional intellectual property rights grant can be found 7e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent * in the file PATENTS. All contributing project authors may 8e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent * be found in the AUTHORS file in the root of the source tree. 9e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent */ 10e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 11e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 12e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent/* 13e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent * This file contains the function WebRtcSpl_CrossCorrelation(). 14e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent * The description header can be found in signal_processing_library.h 15e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent * 16e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent */ 17e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 18e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#include "signal_processing_library.h" 19e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 20e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurentvoid WebRtcSpl_CrossCorrelation(WebRtc_Word32* cross_correlation, WebRtc_Word16* seq1, 21e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent WebRtc_Word16* seq2, WebRtc_Word16 dim_seq, 22e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent WebRtc_Word16 dim_cross_correlation, 23e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent WebRtc_Word16 right_shifts, 24e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent WebRtc_Word16 step_seq2) 25e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent{ 26e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent int i, j; 27e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent WebRtc_Word16* seq1Ptr; 28e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent WebRtc_Word16* seq2Ptr; 29e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent WebRtc_Word32* CrossCorrPtr; 30e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 31e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#ifdef _XSCALE_OPT_ 32e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 33e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#ifdef _WIN32 34e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#pragma message("NOTE: _XSCALE_OPT_ optimizations are used (overrides _ARM_OPT_ and requires /QRxscale compiler flag)") 35e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#endif 36e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 37e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent __int64 macc40; 38e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 39e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent int iseq1[250]; 40e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent int iseq2[250]; 41e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent int iseq3[250]; 42e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent int * iseq1Ptr; 43e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent int * iseq2Ptr; 44e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent int * iseq3Ptr; 45e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent int len, i_len; 46e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 47e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr = seq1; 48e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq1Ptr = iseq1; 49e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent for(i = 0; i < ((dim_seq + 1) >> 1); i++) 50e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 51e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent *iseq1Ptr = (unsigned short)*seq1Ptr++; 52e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent *iseq1Ptr++ |= (WebRtc_Word32)*seq1Ptr++ << 16; 53e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 54e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 55e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 56e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent if(dim_seq%2) 57e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 58e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent *(iseq1Ptr-1) &= 0x0000ffff; 59e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 60e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent *iseq1Ptr = 0; 61e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq1Ptr++; 62e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent *iseq1Ptr = 0; 63e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq1Ptr++; 64e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent *iseq1Ptr = 0; 65e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 66e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent if(step_seq2 < 0) 67e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 68e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr = seq2 - dim_cross_correlation + 1; 69e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent CrossCorrPtr = &cross_correlation[dim_cross_correlation - 1]; 70e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 71e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent else 72e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 73e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr = seq2; 74e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent CrossCorrPtr = cross_correlation; 75e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 76e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 77e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent len = dim_seq + dim_cross_correlation - 1; 78e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent i_len = (len + 1) >> 1; 79e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq2Ptr = iseq2; 80e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 81e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq3Ptr = iseq3; 82e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent for(i = 0; i < i_len; i++) 83e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 84e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent *iseq2Ptr = (unsigned short)*seq2Ptr++; 85e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent *iseq3Ptr = (unsigned short)*seq2Ptr; 86e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent *iseq2Ptr++ |= (WebRtc_Word32)*seq2Ptr++ << 16; 87e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent *iseq3Ptr++ |= (WebRtc_Word32)*seq2Ptr << 16; 88e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 89e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 90e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent if(len % 2) 91e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 92e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq2[i_len - 1] &= 0x0000ffff; 93e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq3[i_len - 1] = 0; 94e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 95e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent else 96e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq3[i_len - 1] &= 0x0000ffff; 97e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 98e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq2[i_len] = 0; 99e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq3[i_len] = 0; 100e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq2[i_len + 1] = 0; 101e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq3[i_len + 1] = 0; 102e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq2[i_len + 2] = 0; 103e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq3[i_len + 2] = 0; 104e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 105e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent // Set pointer to start value 106e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq2Ptr = iseq2; 107e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq3Ptr = iseq3; 108e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 109e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent i_len = (dim_seq + 7) >> 3; 110e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent for (i = 0; i < dim_cross_correlation; i++) 111e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 112e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 113e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq1Ptr = iseq1; 114e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 115e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent macc40 = 0; 116e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 117e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent _WriteCoProcessor(macc40, 0); 118e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 119e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent if((i & 1)) 120e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 121e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq3Ptr = iseq3 + (i >> 1); 122e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent for (j = i_len; j > 0; j--) 123e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 124e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq3Ptr++); 125e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq3Ptr++); 126e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq3Ptr++); 127e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq3Ptr++); 128e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 129e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 130e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent else 131e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 132e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent iseq2Ptr = iseq2 + (i >> 1); 133e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent for (j = i_len; j > 0; j--) 134e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 135e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq2Ptr++); 136e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq2Ptr++); 137e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq2Ptr++); 138e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq2Ptr++); 139e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 140e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 141e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 142e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 143e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent macc40 = _ReadCoProcessor(0); 144e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent *CrossCorrPtr = (WebRtc_Word32)(macc40 >> right_shifts); 145e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent CrossCorrPtr += step_seq2; 146e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 147e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#else // #ifdef _XSCALE_OPT_ 148e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#ifdef _ARM_OPT_ 149e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent WebRtc_Word16 dim_seq8 = (dim_seq >> 3) << 3; 150e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#endif 151e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 152e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent CrossCorrPtr = cross_correlation; 153e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 154e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent for (i = 0; i < dim_cross_correlation; i++) 155e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 156e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent // Set the pointer to the static vector, set the pointer to the sliding vector 157e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent // and initialize cross_correlation 158e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr = seq1; 159e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr = seq2 + (step_seq2 * i); 160e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) = 0; 161e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 162e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#ifndef _ARM_OPT_ 163e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#ifdef _WIN32 164e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#pragma message("NOTE: default implementation is used") 165e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#endif 166e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent // Perform the cross correlation 167e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent for (j = 0; j < dim_seq; j++) 168e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 169e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), right_shifts); 170e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 171e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 172e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 173e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#else 174e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#ifdef _WIN32 175e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#pragma message("NOTE: _ARM_OPT_ optimizations are used") 176e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#endif 177e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent if (right_shifts == 0) 178e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 179e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent // Perform the optimized cross correlation 180e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent for (j = 0; j < dim_seq8; j = j + 8) 181e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 182e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); 183e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 184e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 185e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); 186e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 187e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 188e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); 189e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 190e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 191e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); 192e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 193e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 194e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); 195e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 196e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 197e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); 198e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 199e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 200e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); 201e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 202e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 203e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); 204e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 205e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 206e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 207e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 208e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent for (j = dim_seq8; j < dim_seq; j++) 209e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 210e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); 211e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 212e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 213e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 214e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 215e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent else // right_shifts != 0 216e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 217e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 218e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent // Perform the optimized cross correlation 219e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent for (j = 0; j < dim_seq8; j = j + 8) 220e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 221e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), 222e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent right_shifts); 223e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 224e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 225e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), 226e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent right_shifts); 227e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 228e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 229e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), 230e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent right_shifts); 231e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 232e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 233e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), 234e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent right_shifts); 235e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 236e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 237e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), 238e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent right_shifts); 239e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 240e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 241e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), 242e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent right_shifts); 243e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 244e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 245e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), 246e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent right_shifts); 247e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 248e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 249e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), 250e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent right_shifts); 251e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 252e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 253e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 254e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent 255e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent for (j = dim_seq8; j < dim_seq; j++) 256e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent { 257e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), 258e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent right_shifts); 259e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq1Ptr++; 260e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent seq2Ptr++; 261e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 262e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 263e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#endif 264e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent CrossCorrPtr++; 265e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent } 266e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent#endif 267e48d5845c8b35de2ab73ea055c18a61fa3a9f0beEric Laurent} 268