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1 /* | 1 /* |
2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2011 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 | 11 |
12 // This header file includes the inline functions in | 12 // This header file includes the inline functions in |
13 // the fix point signal processing library. | 13 // the fix point signal processing library. |
14 | 14 |
15 #ifndef WEBRTC_COMMON_AUDIO_SIGNAL_PROCESSING_INCLUDE_SPL_INL_H_ | 15 #ifndef WEBRTC_COMMON_AUDIO_SIGNAL_PROCESSING_INCLUDE_SPL_INL_H_ |
16 #define WEBRTC_COMMON_AUDIO_SIGNAL_PROCESSING_INCLUDE_SPL_INL_H_ | 16 #define WEBRTC_COMMON_AUDIO_SIGNAL_PROCESSING_INCLUDE_SPL_INL_H_ |
17 | 17 |
18 #include "webrtc/rtc_base/compile_assert_c.h" | 18 #include "webrtc/base/compile_assert_c.h" |
19 | 19 |
20 extern const int8_t kWebRtcSpl_CountLeadingZeros32_Table[64]; | 20 extern const int8_t kWebRtcSpl_CountLeadingZeros32_Table[64]; |
21 | 21 |
22 // Don't call this directly except in tests! | 22 // Don't call this directly except in tests! |
23 static __inline int WebRtcSpl_CountLeadingZeros32_NotBuiltin(uint32_t n) { | 23 static __inline int WebRtcSpl_CountLeadingZeros32_NotBuiltin(uint32_t n) { |
24 // Normalize n by rounding up to the nearest number that is a sequence of 0 | 24 // Normalize n by rounding up to the nearest number that is a sequence of 0 |
25 // bits followed by a sequence of 1 bits. This number has the same number of | 25 // bits followed by a sequence of 1 bits. This number has the same number of |
26 // leading zeros as the original n. There are exactly 33 such values. | 26 // leading zeros as the original n. There are exactly 33 such values. |
27 n |= n >> 1; | 27 n |= n >> 1; |
28 n |= n >> 2; | 28 n |= n >> 2; |
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145 } | 145 } |
146 | 146 |
147 static __inline int32_t WebRtc_MulAccumW16(int16_t a, int16_t b, int32_t c) { | 147 static __inline int32_t WebRtc_MulAccumW16(int16_t a, int16_t b, int32_t c) { |
148 return (a * b + c); | 148 return (a * b + c); |
149 } | 149 } |
150 #endif // #if !defined(MIPS32_LE) | 150 #endif // #if !defined(MIPS32_LE) |
151 | 151 |
152 #endif // WEBRTC_ARCH_ARM_V7 | 152 #endif // WEBRTC_ARCH_ARM_V7 |
153 | 153 |
154 #endif // WEBRTC_COMMON_AUDIO_SIGNAL_PROCESSING_INCLUDE_SPL_INL_H_ | 154 #endif // WEBRTC_COMMON_AUDIO_SIGNAL_PROCESSING_INCLUDE_SPL_INL_H_ |
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