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1 /* | 1 /* |
2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #include "webrtc/common_audio/fir_filter_neon.h" | 11 #include "webrtc/common_audio/fir_filter_neon.h" |
12 | 12 |
13 #include <arm_neon.h> | 13 #include <arm_neon.h> |
14 #include <string.h> | 14 #include <string.h> |
15 | 15 |
16 #include "webrtc/base/checks.h" | 16 #include "webrtc/rtc_base/checks.h" |
17 #include "webrtc/system_wrappers/include/aligned_malloc.h" | 17 #include "webrtc/system_wrappers/include/aligned_malloc.h" |
18 | 18 |
19 namespace webrtc { | 19 namespace webrtc { |
20 | 20 |
21 FIRFilterNEON::FIRFilterNEON(const float* coefficients, | 21 FIRFilterNEON::FIRFilterNEON(const float* coefficients, |
22 size_t coefficients_length, | 22 size_t coefficients_length, |
23 size_t max_input_length) | 23 size_t max_input_length) |
24 : // Closest higher multiple of four. | 24 : // Closest higher multiple of four. |
25 coefficients_length_((coefficients_length + 3) & ~0x03), | 25 coefficients_length_((coefficients_length + 3) & ~0x03), |
26 state_length_(coefficients_length_ - 1), | 26 state_length_(coefficients_length_ - 1), |
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63 | 63 |
64 float32x2_t m_half = vadd_f32(vget_high_f32(m_sum), vget_low_f32(m_sum)); | 64 float32x2_t m_half = vadd_f32(vget_high_f32(m_sum), vget_low_f32(m_sum)); |
65 out[i] = vget_lane_f32(vpadd_f32(m_half, m_half), 0); | 65 out[i] = vget_lane_f32(vpadd_f32(m_half, m_half), 0); |
66 } | 66 } |
67 | 67 |
68 // Update current state. | 68 // Update current state. |
69 memmove(state_.get(), &state_[length], state_length_ * sizeof(state_[0])); | 69 memmove(state_.get(), &state_[length], state_length_ * sizeof(state_[0])); |
70 } | 70 } |
71 | 71 |
72 } // namespace webrtc | 72 } // namespace webrtc |
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