1 | /* |
2 | * Copyright (C) 2010, Google Inc. All rights reserved. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
7 | * 1. Redistributions of source code must retain the above copyright |
8 | * notice, this list of conditions and the following disclaimer. |
9 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY |
14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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 ANY |
17 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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 ON |
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 |
22 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
23 | */ |
24 | |
25 | #pragma once |
26 | |
27 | #include "AudioBasicInspectorNode.h" |
28 | #include "RealtimeAnalyser.h" |
29 | |
30 | namespace WebCore { |
31 | |
32 | class AnalyserNode final : public AudioBasicInspectorNode { |
33 | WTF_MAKE_ISO_ALLOCATED(AnalyserNode); |
34 | public: |
35 | static Ref<AnalyserNode> create(AudioContext& context, float sampleRate) |
36 | { |
37 | return adoptRef(*new AnalyserNode(context, sampleRate)); |
38 | } |
39 | |
40 | virtual ~AnalyserNode(); |
41 | |
42 | unsigned fftSize() const { return m_analyser.fftSize(); } |
43 | ExceptionOr<void> setFftSize(unsigned); |
44 | |
45 | unsigned frequencyBinCount() const { return m_analyser.frequencyBinCount(); } |
46 | |
47 | ExceptionOr<void> setMinDecibels(double); |
48 | double minDecibels() const { return m_analyser.minDecibels(); } |
49 | |
50 | ExceptionOr<void> setMaxDecibels(double); |
51 | double maxDecibels() const { return m_analyser.maxDecibels(); } |
52 | |
53 | ExceptionOr<void> setSmoothingTimeConstant(double); |
54 | double smoothingTimeConstant() const { return m_analyser.smoothingTimeConstant(); } |
55 | |
56 | void getFloatFrequencyData(const RefPtr<JSC::Float32Array>& array) { m_analyser.getFloatFrequencyData(array.get()); } |
57 | void getByteFrequencyData(const RefPtr<JSC::Uint8Array>& array) { m_analyser.getByteFrequencyData(array.get()); } |
58 | void getByteTimeDomainData(const RefPtr<JSC::Uint8Array>& array) { m_analyser.getByteTimeDomainData(array.get()); } |
59 | |
60 | private: |
61 | AnalyserNode(AudioContext&, float sampleRate); |
62 | |
63 | void process(size_t framesToProcess) final; |
64 | void reset() final; |
65 | |
66 | double tailTime() const final { return 0; } |
67 | double latencyTime() const final { return 0; } |
68 | |
69 | RealtimeAnalyser m_analyser; |
70 | }; |
71 | |
72 | } // namespace WebCore |
73 | |