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

Issue 1557363002: Remove the WEB_AUDIO compile time flag (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 11 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
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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 #ifndef AudioResamplerKernel_h 25 #ifndef AudioResamplerKernel_h
26 #define AudioResamplerKernel_h 26 #define AudioResamplerKernel_h
27 27
28 #include "platform/PlatformExport.h" 28 #include "platform/PlatformExport.h"
29 #include "platform/audio/AudioArray.h" 29 #include "platform/audio/AudioArray.h"
30 #include "wtf/Allocator.h" 30 #include "wtf/Allocator.h"
31 31
32 #if ENABLE(WEB_AUDIO)
33
34 namespace blink { 32 namespace blink {
35 33
36 class AudioResampler; 34 class AudioResampler;
37 35
38 // AudioResamplerKernel does resampling on a single mono channel. 36 // AudioResamplerKernel does resampling on a single mono channel.
39 // It uses a simple linear interpolation for good performance. 37 // It uses a simple linear interpolation for good performance.
40 38
41 class PLATFORM_EXPORT AudioResamplerKernel { 39 class PLATFORM_EXPORT AudioResamplerKernel {
42 USING_FAST_MALLOC(AudioResamplerKernel); 40 USING_FAST_MALLOC(AudioResamplerKernel);
43 WTF_MAKE_NONCOPYABLE(AudioResamplerKernel); 41 WTF_MAKE_NONCOPYABLE(AudioResamplerKernel);
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72 // We need to have continuity from one call of process() to the next. 70 // We need to have continuity from one call of process() to the next.
73 // m_lastValues stores the last two sample values from the last call to proc ess(). 71 // m_lastValues stores the last two sample values from the last call to proc ess().
74 // m_fillIndex represents how many buffered samples we have which can be as many as 2. 72 // m_fillIndex represents how many buffered samples we have which can be as many as 2.
75 // For the first call to process() (or after reset()) there will be no buffe red samples. 73 // For the first call to process() (or after reset()) there will be no buffe red samples.
76 float m_lastValues[2]; 74 float m_lastValues[2];
77 unsigned m_fillIndex; 75 unsigned m_fillIndex;
78 }; 76 };
79 77
80 } // namespace blink 78 } // namespace blink
81 79
82 #endif // ENABLE(WEB_AUDIO)
83
84 #endif // AudioResamplerKernel_h 80 #endif // AudioResamplerKernel_h
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