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Side by Side Diff: third_party/WebKit/Source/platform/audio/AudioResampler.h

Issue 2384073002: reflow comments in platform/audio (Closed)
Patch Set: comments (heh!) Created 4 years, 2 months ago
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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 * 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
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN Y 16 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O N 19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 20 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
23 * DAMAGE.
23 */ 24 */
24 25
25 #ifndef AudioResampler_h 26 #ifndef AudioResampler_h
26 #define AudioResampler_h 27 #define AudioResampler_h
27 28
28 #include "platform/audio/AudioBus.h" 29 #include "platform/audio/AudioBus.h"
29 #include "platform/audio/AudioResamplerKernel.h" 30 #include "platform/audio/AudioResamplerKernel.h"
30 #include "platform/audio/AudioSourceProvider.h" 31 #include "platform/audio/AudioSourceProvider.h"
31 #include "wtf/Allocator.h" 32 #include "wtf/Allocator.h"
32 #include "wtf/Noncopyable.h" 33 #include "wtf/Noncopyable.h"
33 #include "wtf/Vector.h" 34 #include "wtf/Vector.h"
34 #include <memory> 35 #include <memory>
35 36
36 namespace blink { 37 namespace blink {
37 38
38 // AudioResampler resamples the audio stream from an AudioSourceProvider. 39 // AudioResampler resamples the audio stream from an AudioSourceProvider.
39 // The audio stream may be single or multi-channel. 40 // The audio stream may be single or multi-channel.
40 // The default constructor defaults to single-channel (mono). 41 // The default constructor defaults to single-channel (mono).
41 42
42 class PLATFORM_EXPORT AudioResampler { 43 class PLATFORM_EXPORT AudioResampler {
43 DISALLOW_NEW(); 44 DISALLOW_NEW();
44 WTF_MAKE_NONCOPYABLE(AudioResampler); 45 WTF_MAKE_NONCOPYABLE(AudioResampler);
45 46
46 public: 47 public:
47 AudioResampler(); 48 AudioResampler();
48 AudioResampler(unsigned numberOfChannels); 49 AudioResampler(unsigned numberOfChannels);
49 ~AudioResampler() {} 50 ~AudioResampler() {}
50 51
51 // Given an AudioSourceProvider, process() resamples the source stream into de stinationBus. 52 // Given an AudioSourceProvider, process() resamples the source stream into
53 // destinationBus.
52 void process(AudioSourceProvider*, 54 void process(AudioSourceProvider*,
53 AudioBus* destinationBus, 55 AudioBus* destinationBus,
54 size_t framesToProcess); 56 size_t framesToProcess);
55 57
56 // Resets the processing state. 58 // Resets the processing state.
57 void reset(); 59 void reset();
58 60
59 void configureChannels(unsigned numberOfChannels); 61 void configureChannels(unsigned numberOfChannels);
60 62
61 // 0 < rate <= MaxRate 63 // 0 < rate <= MaxRate
62 void setRate(double rate); 64 void setRate(double rate);
63 double rate() const { return m_rate; } 65 double rate() const { return m_rate; }
64 66
65 static const double MaxRate; 67 static const double MaxRate;
66 68
67 private: 69 private:
68 double m_rate; 70 double m_rate;
69 Vector<std::unique_ptr<AudioResamplerKernel>> m_kernels; 71 Vector<std::unique_ptr<AudioResamplerKernel>> m_kernels;
70 RefPtr<AudioBus> m_sourceBus; 72 RefPtr<AudioBus> m_sourceBus;
71 }; 73 };
72 74
73 } // namespace blink 75 } // namespace blink
74 76
75 #endif // AudioResampler_h 77 #endif // AudioResampler_h
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