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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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| 107 | 107 |
| 108 // FIXME: this can go away when we do mixing with gain directly in summing | 108 // FIXME: this can go away when we do mixing with gain directly in summing |
| 109 // junction of AudioNodeInput | 109 // junction of AudioNodeInput |
| 110 // | 110 // |
| 111 // As soon as we know the channel count of our input, we can lazily initialize. | 111 // As soon as we know the channel count of our input, we can lazily initialize. |
| 112 // Sometimes this may be called more than once with different channel counts, in | 112 // Sometimes this may be called more than once with different channel counts, in |
| 113 // which case we must safely uninitialize and then re-initialize with the new | 113 // which case we must safely uninitialize and then re-initialize with the new |
| 114 // channel count. | 114 // channel count. |
| 115 void GainHandler::CheckNumberOfChannelsForInput(AudioNodeInput* input) { | 115 void GainHandler::CheckNumberOfChannelsForInput(AudioNodeInput* input) { |
| 116 DCHECK(Context()->IsAudioThread()); | 116 DCHECK(Context()->IsAudioThread()); |
| 117 ASSERT(Context()->IsGraphOwner()); | 117 DCHECK(Context()->IsGraphOwner()); |
| 118 | 118 |
| 119 DCHECK(input); | 119 DCHECK(input); |
| 120 DCHECK_EQ(input, &this->Input(0)); | 120 DCHECK_EQ(input, &this->Input(0)); |
| 121 if (input != &this->Input(0)) | 121 if (input != &this->Input(0)) |
| 122 return; | 122 return; |
| 123 | 123 |
| 124 unsigned number_of_channels = input->NumberOfChannels(); | 124 unsigned number_of_channels = input->NumberOfChannels(); |
| 125 | 125 |
| 126 if (IsInitialized() && number_of_channels != Output(0).NumberOfChannels()) { | 126 if (IsInitialized() && number_of_channels != Output(0).NumberOfChannels()) { |
| 127 // We're already initialized but the channel count has changed. | 127 // We're already initialized but the channel count has changed. |
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| 178 AudioParam* GainNode::gain() const { | 178 AudioParam* GainNode::gain() const { |
| 179 return gain_; | 179 return gain_; |
| 180 } | 180 } |
| 181 | 181 |
| 182 DEFINE_TRACE(GainNode) { | 182 DEFINE_TRACE(GainNode) { |
| 183 visitor->Trace(gain_); | 183 visitor->Trace(gain_); |
| 184 AudioNode::Trace(visitor); | 184 AudioNode::Trace(visitor); |
| 185 } | 185 } |
| 186 | 186 |
| 187 } // namespace blink | 187 } // namespace blink |
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