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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 |
| (...skipping 12 matching lines...) Expand all Loading... |
| 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 #include "config.h" | 29 #include "config.h" |
| 30 | 30 |
| 31 #if ENABLE(WEB_AUDIO) | 31 #if ENABLE(WEB_AUDIO) |
| 32 | 32 |
| 33 #include "ZeroPole.h" | 33 #include "core/platform/audio/ZeroPole.h" |
| 34 | 34 |
| 35 #include "DenormalDisabler.h" | 35 #include "core/platform/audio/DenormalDisabler.h" |
| 36 | 36 |
| 37 namespace WebCore { | 37 namespace WebCore { |
| 38 | 38 |
| 39 void ZeroPole::process(const float *source, float *destination, unsigned framesT
oProcess) | 39 void ZeroPole::process(const float *source, float *destination, unsigned framesT
oProcess) |
| 40 { | 40 { |
| 41 float zero = m_zero; | 41 float zero = m_zero; |
| 42 float pole = m_pole; | 42 float pole = m_pole; |
| 43 | 43 |
| 44 // Gain compensation to make 0dB @ 0Hz | 44 // Gain compensation to make 0dB @ 0Hz |
| 45 const float k1 = 1 / (1 - zero); | 45 const float k1 = 1 / (1 - zero); |
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| 65 | 65 |
| 66 // Locals to member variables. Flush denormals here so we don't | 66 // Locals to member variables. Flush denormals here so we don't |
| 67 // slow down the inner loop above. | 67 // slow down the inner loop above. |
| 68 m_lastX = DenormalDisabler::flushDenormalFloatToZero(lastX); | 68 m_lastX = DenormalDisabler::flushDenormalFloatToZero(lastX); |
| 69 m_lastY = DenormalDisabler::flushDenormalFloatToZero(lastY); | 69 m_lastY = DenormalDisabler::flushDenormalFloatToZero(lastY); |
| 70 } | 70 } |
| 71 | 71 |
| 72 } // namespace WebCore | 72 } // namespace WebCore |
| 73 | 73 |
| 74 #endif // ENABLE(WEB_AUDIO) | 74 #endif // ENABLE(WEB_AUDIO) |
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