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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 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
12 * | 12 * |
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN
Y | 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN
Y |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y | 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y |
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N | 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N |
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
23 */ | 23 */ |
24 | 24 |
25 #include "modules/webaudio/WaveShaperDSPKernel.h" | 25 #include "modules/webaudio/WaveShaperDSPKernel.h" |
| 26 #include "wtf/PtrUtil.h" |
26 #include "wtf/Threading.h" | 27 #include "wtf/Threading.h" |
27 #include <algorithm> | 28 #include <algorithm> |
28 | 29 |
29 const unsigned RenderingQuantum = 128; | 30 const unsigned RenderingQuantum = 128; |
30 | 31 |
31 namespace blink { | 32 namespace blink { |
32 | 33 |
33 WaveShaperDSPKernel::WaveShaperDSPKernel(WaveShaperProcessor* processor) | 34 WaveShaperDSPKernel::WaveShaperDSPKernel(WaveShaperProcessor* processor) |
34 : AudioDSPKernel(processor) | 35 : AudioDSPKernel(processor) |
35 { | 36 { |
36 if (processor->oversample() != WaveShaperProcessor::OverSampleNone) | 37 if (processor->oversample() != WaveShaperProcessor::OverSampleNone) |
37 lazyInitializeOversampling(); | 38 lazyInitializeOversampling(); |
38 } | 39 } |
39 | 40 |
40 void WaveShaperDSPKernel::lazyInitializeOversampling() | 41 void WaveShaperDSPKernel::lazyInitializeOversampling() |
41 { | 42 { |
42 if (!m_tempBuffer) { | 43 if (!m_tempBuffer) { |
43 m_tempBuffer = adoptPtr(new AudioFloatArray(RenderingQuantum * 2)); | 44 m_tempBuffer = wrapUnique(new AudioFloatArray(RenderingQuantum * 2)); |
44 m_tempBuffer2 = adoptPtr(new AudioFloatArray(RenderingQuantum * 4)); | 45 m_tempBuffer2 = wrapUnique(new AudioFloatArray(RenderingQuantum * 4)); |
45 m_upSampler = adoptPtr(new UpSampler(RenderingQuantum)); | 46 m_upSampler = wrapUnique(new UpSampler(RenderingQuantum)); |
46 m_downSampler = adoptPtr(new DownSampler(RenderingQuantum * 2)); | 47 m_downSampler = wrapUnique(new DownSampler(RenderingQuantum * 2)); |
47 m_upSampler2 = adoptPtr(new UpSampler(RenderingQuantum * 2)); | 48 m_upSampler2 = wrapUnique(new UpSampler(RenderingQuantum * 2)); |
48 m_downSampler2 = adoptPtr(new DownSampler(RenderingQuantum * 4)); | 49 m_downSampler2 = wrapUnique(new DownSampler(RenderingQuantum * 4)); |
49 } | 50 } |
50 } | 51 } |
51 | 52 |
52 void WaveShaperDSPKernel::process(const float* source, float* destination, size_
t framesToProcess) | 53 void WaveShaperDSPKernel::process(const float* source, float* destination, size_
t framesToProcess) |
53 { | 54 { |
54 switch (getWaveShaperProcessor()->oversample()) { | 55 switch (getWaveShaperProcessor()->oversample()) { |
55 case WaveShaperProcessor::OverSampleNone: | 56 case WaveShaperProcessor::OverSampleNone: |
56 processCurve(source, destination, framesToProcess); | 57 processCurve(source, destination, framesToProcess); |
57 break; | 58 break; |
58 case WaveShaperProcessor::OverSample2x: | 59 case WaveShaperProcessor::OverSample2x: |
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195 } | 196 } |
196 default: | 197 default: |
197 ASSERT_NOT_REACHED(); | 198 ASSERT_NOT_REACHED(); |
198 } | 199 } |
199 | 200 |
200 return static_cast<double>(latencyFrames) / sampleRate(); | 201 return static_cast<double>(latencyFrames) / sampleRate(); |
201 } | 202 } |
202 | 203 |
203 } // namespace blink | 204 } // namespace blink |
204 | 205 |
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