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 "AudioNode.h" |
28 | #include <wtf/Lock.h> |
29 | |
30 | namespace WebCore { |
31 | |
32 | class AudioBuffer; |
33 | class Reverb; |
34 | |
35 | class ConvolverNode final : public AudioNode { |
36 | WTF_MAKE_ISO_ALLOCATED(ConvolverNode); |
37 | public: |
38 | static Ref<ConvolverNode> create(AudioContext& context, float sampleRate) |
39 | { |
40 | return adoptRef(*new ConvolverNode(context, sampleRate)); |
41 | } |
42 | |
43 | virtual ~ConvolverNode(); |
44 | |
45 | ExceptionOr<void> setBuffer(AudioBuffer*); |
46 | AudioBuffer* buffer(); |
47 | |
48 | bool normalize() const { return m_normalize; } |
49 | void setNormalize(bool normalize) { m_normalize = normalize; } |
50 | |
51 | private: |
52 | ConvolverNode(AudioContext&, float sampleRate); |
53 | |
54 | double tailTime() const final; |
55 | double latencyTime() const final; |
56 | |
57 | void process(size_t framesToProcess) final; |
58 | void reset() final; |
59 | void initialize() final; |
60 | void uninitialize() final; |
61 | |
62 | std::unique_ptr<Reverb> m_reverb; |
63 | RefPtr<AudioBuffer> m_buffer; |
64 | |
65 | // This synchronizes dynamic changes to the convolution impulse response with process(). |
66 | mutable Lock m_processMutex; |
67 | |
68 | // Normalize the impulse response or not. |
69 | bool m_normalize { true }; |
70 | }; |
71 | |
72 | } // namespace WebCore |
73 | |