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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 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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46 ChannelProvider(AudioSourceProvider* multiChannelProvider, unsigned numberOf
Channels) | 46 ChannelProvider(AudioSourceProvider* multiChannelProvider, unsigned numberOf
Channels) |
47 : m_multiChannelProvider(multiChannelProvider) | 47 : m_multiChannelProvider(multiChannelProvider) |
48 , m_numberOfChannels(numberOfChannels) | 48 , m_numberOfChannels(numberOfChannels) |
49 , m_currentChannel(0) | 49 , m_currentChannel(0) |
50 , m_framesToProcess(0) | 50 , m_framesToProcess(0) |
51 { | 51 { |
52 } | 52 } |
53 | 53 |
54 // provideInput() will be called once for each channel, starting with the fi
rst channel. | 54 // provideInput() will be called once for each channel, starting with the fi
rst channel. |
55 // Each time it's called, it will provide the next channel of data. | 55 // Each time it's called, it will provide the next channel of data. |
56 virtual void provideInput(AudioBus* bus, size_t framesToProcess) OVERRIDE | 56 virtual void provideInput(AudioBus* bus, size_t framesToProcess) override |
57 { | 57 { |
58 bool isBusGood = bus && bus->numberOfChannels() == 1; | 58 bool isBusGood = bus && bus->numberOfChannels() == 1; |
59 ASSERT(isBusGood); | 59 ASSERT(isBusGood); |
60 if (!isBusGood) | 60 if (!isBusGood) |
61 return; | 61 return; |
62 | 62 |
63 // Get the data from the multi-channel provider when the first channel a
sks for it. | 63 // Get the data from the multi-channel provider when the first channel a
sks for it. |
64 // For subsequent channels, we can just dish out the channel data from t
hat (stored in m_multiChannelBus). | 64 // For subsequent channels, we can just dish out the channel data from t
hat (stored in m_multiChannelBus). |
65 if (!m_currentChannel) { | 65 if (!m_currentChannel) { |
66 m_framesToProcess = framesToProcess; | 66 m_framesToProcess = framesToProcess; |
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114 // channels, since they all buffer in the same way and are processing th
e same number of frames. | 114 // channels, since they all buffer in the same way and are processing th
e same number of frames. |
115 m_kernels[channelIndex]->process(&channelProvider, | 115 m_kernels[channelIndex]->process(&channelProvider, |
116 destination->channel(channelIndex)->mut
ableData(), | 116 destination->channel(channelIndex)->mut
ableData(), |
117 framesToProcess); | 117 framesToProcess); |
118 } | 118 } |
119 } | 119 } |
120 | 120 |
121 } // namespace blink | 121 } // namespace blink |
122 | 122 |
123 #endif // ENABLE(WEB_AUDIO) | 123 #endif // ENABLE(WEB_AUDIO) |
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