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| 1 /* | 1 /* |
| 2 * Copyright (C) 2010 Google Inc. All rights reserved. | 2 * Copyright (C) 2010 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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| 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 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 Biquad_h | 29 #ifndef Biquad_h |
| 30 #define Biquad_h | 30 #define Biquad_h |
| 31 | 31 |
| 32 #include "AudioArray.h" | |
| 33 #include <sys/types.h> | 32 #include <sys/types.h> |
| 33 #include "core/platform/audio/AudioArray.h" |
| 34 #include <wtf/Complex.h> | 34 #include <wtf/Complex.h> |
| 35 | 35 |
| 36 #if USE(WEBAUDIO_IPP) | 36 #if USE(WEBAUDIO_IPP) |
| 37 #include <ipps.h> | 37 #include <ipps.h> |
| 38 #endif // USE(WEBAUDIO_IPP) | 38 #endif // USE(WEBAUDIO_IPP) |
| 39 | 39 |
| 40 namespace WebCore { | 40 namespace WebCore { |
| 41 | 41 |
| 42 // A basic biquad (two-zero / two-pole digital filter) | 42 // A basic biquad (two-zero / two-pole digital filter) |
| 43 // | 43 // |
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| 108 double m_x1; // input delayed by 1 sample | 108 double m_x1; // input delayed by 1 sample |
| 109 double m_x2; // input delayed by 2 samples | 109 double m_x2; // input delayed by 2 samples |
| 110 double m_y1; // output delayed by 1 sample | 110 double m_y1; // output delayed by 1 sample |
| 111 double m_y2; // output delayed by 2 samples | 111 double m_y2; // output delayed by 2 samples |
| 112 #endif | 112 #endif |
| 113 }; | 113 }; |
| 114 | 114 |
| 115 } // namespace WebCore | 115 } // namespace WebCore |
| 116 | 116 |
| 117 #endif // Biquad_h | 117 #endif // Biquad_h |
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