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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 * | 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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| 142 | 142 |
| 143 bool AudioBuffer::createdSuccessfully(unsigned desiredNumberOfChannels) const | 143 bool AudioBuffer::createdSuccessfully(unsigned desiredNumberOfChannels) const |
| 144 { | 144 { |
| 145 return numberOfChannels() == desiredNumberOfChannels; | 145 return numberOfChannels() == desiredNumberOfChannels; |
| 146 } | 146 } |
| 147 | 147 |
| 148 AudioBuffer::AudioBuffer(unsigned numberOfChannels, size_t numberOfFrames, float
sampleRate) | 148 AudioBuffer::AudioBuffer(unsigned numberOfChannels, size_t numberOfFrames, float
sampleRate) |
| 149 : m_sampleRate(sampleRate) | 149 : m_sampleRate(sampleRate) |
| 150 , m_length(numberOfFrames) | 150 , m_length(numberOfFrames) |
| 151 { | 151 { |
| 152 ScriptWrappable::init(this); | |
| 153 m_channels.reserveCapacity(numberOfChannels); | 152 m_channels.reserveCapacity(numberOfChannels); |
| 154 | 153 |
| 155 for (unsigned i = 0; i < numberOfChannels; ++i) { | 154 for (unsigned i = 0; i < numberOfChannels; ++i) { |
| 156 RefPtr<Float32Array> channelDataArray = Float32Array::create(m_length); | 155 RefPtr<Float32Array> channelDataArray = Float32Array::create(m_length); |
| 157 // If the channel data array could not be created, just return. The call
er will need to | 156 // If the channel data array could not be created, just return. The call
er will need to |
| 158 // check that the desired number of channels were created. | 157 // check that the desired number of channels were created. |
| 159 if (!channelDataArray) { | 158 if (!channelDataArray) { |
| 160 return; | 159 return; |
| 161 } | 160 } |
| 162 | 161 |
| 163 channelDataArray->setNeuterable(false); | 162 channelDataArray->setNeuterable(false); |
| 164 m_channels.append(channelDataArray); | 163 m_channels.append(channelDataArray); |
| 165 } | 164 } |
| 166 } | 165 } |
| 167 | 166 |
| 168 AudioBuffer::AudioBuffer(AudioBus* bus) | 167 AudioBuffer::AudioBuffer(AudioBus* bus) |
| 169 : m_sampleRate(bus->sampleRate()) | 168 : m_sampleRate(bus->sampleRate()) |
| 170 , m_length(bus->length()) | 169 , m_length(bus->length()) |
| 171 { | 170 { |
| 172 ScriptWrappable::init(this); | |
| 173 // Copy audio data from the bus to the Float32Arrays we manage. | 171 // Copy audio data from the bus to the Float32Arrays we manage. |
| 174 unsigned numberOfChannels = bus->numberOfChannels(); | 172 unsigned numberOfChannels = bus->numberOfChannels(); |
| 175 m_channels.reserveCapacity(numberOfChannels); | 173 m_channels.reserveCapacity(numberOfChannels); |
| 176 for (unsigned i = 0; i < numberOfChannels; ++i) { | 174 for (unsigned i = 0; i < numberOfChannels; ++i) { |
| 177 RefPtr<Float32Array> channelDataArray = Float32Array::create(m_length); | 175 RefPtr<Float32Array> channelDataArray = Float32Array::create(m_length); |
| 178 // If the channel data array could not be created, just return. The call
er will need to | 176 // If the channel data array could not be created, just return. The call
er will need to |
| 179 // check that the desired number of channels were created. | 177 // check that the desired number of channels were created. |
| 180 if (!channelDataArray) | 178 if (!channelDataArray) |
| 181 return; | 179 return; |
| 182 | 180 |
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| 209 { | 207 { |
| 210 for (unsigned i = 0; i < m_channels.size(); ++i) { | 208 for (unsigned i = 0; i < m_channels.size(); ++i) { |
| 211 if (getChannelData(i)) | 209 if (getChannelData(i)) |
| 212 getChannelData(i)->zeroRange(0, length()); | 210 getChannelData(i)->zeroRange(0, length()); |
| 213 } | 211 } |
| 214 } | 212 } |
| 215 | 213 |
| 216 } // namespace blink | 214 } // namespace blink |
| 217 | 215 |
| 218 #endif // ENABLE(WEB_AUDIO) | 216 #endif // ENABLE(WEB_AUDIO) |
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