| /* |
| * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| |
| /* |
| * This file contains the function WebRtcSpl_DotProductWithScale(). |
| * The description header can be found in signal_processing_library.h |
| * |
| */ |
| |
| #include "signal_processing_library.h" |
| |
| WebRtc_Word32 WebRtcSpl_DotProductWithScale(WebRtc_Word16 *vector1, WebRtc_Word16 *vector2, |
| int length, int scaling) |
| { |
| WebRtc_Word32 sum; |
| int i; |
| #ifdef _ARM_OPT_ |
| #pragma message("NOTE: _ARM_OPT_ optimizations are used") |
| WebRtc_Word16 len4 = (length >> 2) << 2; |
| #endif |
| |
| sum = 0; |
| |
| #ifndef _ARM_OPT_ |
| for (i = 0; i < length; i++) |
| { |
| sum += WEBRTC_SPL_MUL_16_16_RSFT(*vector1++, *vector2++, scaling); |
| } |
| #else |
| if (scaling == 0) |
| { |
| for (i = 0; i < len4; i = i + 4) |
| { |
| sum += WEBRTC_SPL_MUL_16_16(*vector1, *vector2); |
| vector1++; |
| vector2++; |
| sum += WEBRTC_SPL_MUL_16_16(*vector1, *vector2); |
| vector1++; |
| vector2++; |
| sum += WEBRTC_SPL_MUL_16_16(*vector1, *vector2); |
| vector1++; |
| vector2++; |
| sum += WEBRTC_SPL_MUL_16_16(*vector1, *vector2); |
| vector1++; |
| vector2++; |
| } |
| |
| for (i = len4; i < length; i++) |
| { |
| sum += WEBRTC_SPL_MUL_16_16(*vector1, *vector2); |
| vector1++; |
| vector2++; |
| } |
| } |
| else |
| { |
| for (i = 0; i < len4; i = i + 4) |
| { |
| sum += WEBRTC_SPL_MUL_16_16_RSFT(*vector1, *vector2, scaling); |
| vector1++; |
| vector2++; |
| sum += WEBRTC_SPL_MUL_16_16_RSFT(*vector1, *vector2, scaling); |
| vector1++; |
| vector2++; |
| sum += WEBRTC_SPL_MUL_16_16_RSFT(*vector1, *vector2, scaling); |
| vector1++; |
| vector2++; |
| sum += WEBRTC_SPL_MUL_16_16_RSFT(*vector1, *vector2, scaling); |
| vector1++; |
| vector2++; |
| } |
| |
| for (i = len4; i < length; i++) |
| { |
| sum += WEBRTC_SPL_MUL_16_16_RSFT(*vector1, *vector2, scaling); |
| vector1++; |
| vector2++; |
| } |
| } |
| #endif |
| |
| return sum; |
| } |