content/media/webaudio/blink/ZeroPole.h@b8a032363ba2 (annotated)
content/media/webaudio/blink/ZeroPole.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright (C) 2011 Google Inc. All rights reserved. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Redistribution and use in source and binary forms, with or without |
| michael@0 | 5 | * modification, are permitted provided that the following conditions |
| michael@0 | 6 | * are met: |
| michael@0 | 7 | * |
| michael@0 | 8 | * 1. Redistributions of source code must retain the above copyright |
| michael@0 | 9 | * notice, this list of conditions and the following disclaimer. |
| michael@0 | 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| michael@0 | 11 | * notice, this list of conditions and the following disclaimer in the |
| michael@0 | 12 | * documentation and/or other materials provided with the distribution. |
| michael@0 | 13 | * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| michael@0 | 14 | * its contributors may be used to endorse or promote products derived |
| michael@0 | 15 | * from this software without specific prior written permission. |
| michael@0 | 16 | * |
| michael@0 | 17 | * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| michael@0 | 18 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| michael@0 | 19 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| michael@0 | 20 | * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| michael@0 | 21 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| michael@0 | 22 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| michael@0 | 23 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| michael@0 | 24 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| michael@0 | 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| michael@0 | 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| michael@0 | 27 | */ |
| michael@0 | 28 | |
| michael@0 | 29 | #ifndef ZeroPole_h |
| michael@0 | 30 | #define ZeroPole_h |
| michael@0 | 31 | |
| michael@0 | 32 | namespace WebCore { |
| michael@0 | 33 | |
| michael@0 | 34 | // ZeroPole is a simple filter with one zero and one pole. |
| michael@0 | 35 | |
| michael@0 | 36 | class ZeroPole { |
| michael@0 | 37 | public: |
| michael@0 | 38 | ZeroPole() |
| michael@0 | 39 | : m_zero(0) |
| michael@0 | 40 | , m_pole(0) |
| michael@0 | 41 | , m_lastX(0) |
| michael@0 | 42 | , m_lastY(0) |
| michael@0 | 43 | { |
| michael@0 | 44 | } |
| michael@0 | 45 | |
| michael@0 | 46 | void process(const float *source, float *destination, int framesToProcess); |
| michael@0 | 47 | |
| michael@0 | 48 | // Reset filter state. |
| michael@0 | 49 | void reset() { m_lastX = 0; m_lastY = 0; } |
| michael@0 | 50 | |
| michael@0 | 51 | void setZero(float zero) { m_zero = zero; } |
| michael@0 | 52 | void setPole(float pole) { m_pole = pole; } |
| michael@0 | 53 | |
| michael@0 | 54 | float zero() const { return m_zero; } |
| michael@0 | 55 | float pole() const { return m_pole; } |
| michael@0 | 56 | |
| michael@0 | 57 | private: |
| michael@0 | 58 | float m_zero; |
| michael@0 | 59 | float m_pole; |
| michael@0 | 60 | float m_lastX; |
| michael@0 | 61 | float m_lastY; |
| michael@0 | 62 | }; |
| michael@0 | 63 | |
| michael@0 | 64 | } // namespace WebCore |
| michael@0 | 65 | |
| michael@0 | 66 | #endif // ZeroPole_h |
