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1 /* | 1 /* |
2 * Copyright (C) 2011 Google Inc. All rights reserved. | 2 * Copyright (C) 2011 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 */ | 27 */ |
28 | 28 |
29 #ifndef ZeroPole_h | 29 #ifndef ZeroPole_h |
30 #define ZeroPole_h | 30 #define ZeroPole_h |
31 | 31 |
32 #include "platform/PlatformExport.h" | 32 #include "platform/PlatformExport.h" |
33 #include "wtf/Allocator.h" | 33 #include "wtf/Allocator.h" |
34 #include "wtf/build_config.h" | 34 #include "wtf/build_config.h" |
35 | 35 |
36 #if ENABLE(WEB_AUDIO) | |
37 | |
38 namespace blink { | 36 namespace blink { |
39 | 37 |
40 // ZeroPole is a simple filter with one zero and one pole. | 38 // ZeroPole is a simple filter with one zero and one pole. |
41 | 39 |
42 class PLATFORM_EXPORT ZeroPole { | 40 class PLATFORM_EXPORT ZeroPole { |
43 DISALLOW_NEW(); | 41 DISALLOW_NEW(); |
44 public: | 42 public: |
45 ZeroPole() | 43 ZeroPole() |
46 : m_zero(0) | 44 : m_zero(0) |
47 , m_pole(0) | 45 , m_pole(0) |
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63 | 61 |
64 private: | 62 private: |
65 float m_zero; | 63 float m_zero; |
66 float m_pole; | 64 float m_pole; |
67 float m_lastX; | 65 float m_lastX; |
68 float m_lastY; | 66 float m_lastY; |
69 }; | 67 }; |
70 | 68 |
71 } // namespace blink | 69 } // namespace blink |
72 | 70 |
73 #endif // ENABLE(WEB_AUDIO) | |
74 | |
75 #endif // ZeroPole_h | 71 #endif // ZeroPole_h |
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