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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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56 return buffer; | 56 return buffer; |
57 } | 57 } |
58 | 58 |
59 AudioBuffer* AudioBuffer::create(unsigned numberOfChannels, | 59 AudioBuffer* AudioBuffer::create(unsigned numberOfChannels, |
60 size_t numberOfFrames, | 60 size_t numberOfFrames, |
61 float sampleRate, | 61 float sampleRate, |
62 ExceptionState& exceptionState) { | 62 ExceptionState& exceptionState) { |
63 if (!numberOfChannels || | 63 if (!numberOfChannels || |
64 numberOfChannels > BaseAudioContext::maxNumberOfChannels()) { | 64 numberOfChannels > BaseAudioContext::maxNumberOfChannels()) { |
65 exceptionState.throwDOMException( | 65 exceptionState.throwDOMException( |
66 NotSupportedError, ExceptionMessages::indexOutsideRange( | 66 NotSupportedError, |
67 "number of channels", numberOfChannels, 1u, | 67 ExceptionMessages::indexOutsideRange( |
68 ExceptionMessages::InclusiveBound, | 68 "number of channels", numberOfChannels, 1u, |
69 BaseAudioContext::maxNumberOfChannels(), | 69 ExceptionMessages::InclusiveBound, |
70 ExceptionMessages::InclusiveBound)); | 70 BaseAudioContext::maxNumberOfChannels(), |
| 71 ExceptionMessages::InclusiveBound)); |
71 return nullptr; | 72 return nullptr; |
72 } | 73 } |
73 | 74 |
74 if (!AudioUtilities::isValidAudioBufferSampleRate(sampleRate)) { | 75 if (!AudioUtilities::isValidAudioBufferSampleRate(sampleRate)) { |
75 exceptionState.throwDOMException( | 76 exceptionState.throwDOMException( |
76 NotSupportedError, ExceptionMessages::indexOutsideRange( | 77 NotSupportedError, |
77 "sample rate", sampleRate, | 78 ExceptionMessages::indexOutsideRange( |
78 AudioUtilities::minAudioBufferSampleRate(), | 79 "sample rate", sampleRate, |
79 ExceptionMessages::InclusiveBound, | 80 AudioUtilities::minAudioBufferSampleRate(), |
80 AudioUtilities::maxAudioBufferSampleRate(), | 81 ExceptionMessages::InclusiveBound, |
81 ExceptionMessages::InclusiveBound)); | 82 AudioUtilities::maxAudioBufferSampleRate(), |
| 83 ExceptionMessages::InclusiveBound)); |
82 return nullptr; | 84 return nullptr; |
83 } | 85 } |
84 | 86 |
85 if (!numberOfFrames) { | 87 if (!numberOfFrames) { |
86 exceptionState.throwDOMException( | 88 exceptionState.throwDOMException( |
87 NotSupportedError, | 89 NotSupportedError, |
88 ExceptionMessages::indexExceedsMinimumBound( | 90 ExceptionMessages::indexExceedsMinimumBound( |
89 "number of frames", numberOfFrames, static_cast<size_t>(0))); | 91 "number of frames", numberOfFrames, static_cast<size_t>(0))); |
90 return nullptr; | 92 return nullptr; |
91 } | 93 } |
92 | 94 |
93 AudioBuffer* audioBuffer = | 95 AudioBuffer* audioBuffer = |
94 create(numberOfChannels, numberOfFrames, sampleRate); | 96 create(numberOfChannels, numberOfFrames, sampleRate); |
95 | 97 |
96 if (!audioBuffer) { | 98 if (!audioBuffer) { |
97 exceptionState.throwDOMException( | 99 exceptionState.throwDOMException( |
98 NotSupportedError, "createBuffer(" + String::number(numberOfChannels) + | 100 NotSupportedError, |
99 ", " + String::number(numberOfFrames) + ", " + | 101 "createBuffer(" + String::number(numberOfChannels) + ", " + |
100 String::number(sampleRate) + ") failed."); | 102 String::number(numberOfFrames) + ", " + String::number(sampleRate) + |
| 103 ") failed."); |
101 } | 104 } |
102 | 105 |
103 return audioBuffer; | 106 return audioBuffer; |
104 } | 107 } |
105 | 108 |
106 AudioBuffer* AudioBuffer::create(const AudioBufferOptions& options, | 109 AudioBuffer* AudioBuffer::create(const AudioBufferOptions& options, |
107 ExceptionState& exceptionState) { | 110 ExceptionState& exceptionState) { |
108 return create(options.numberOfChannels(), options.length(), | 111 return create(options.numberOfChannels(), options.length(), |
109 options.sampleRate(), exceptionState); | 112 options.sampleRate(), exceptionState); |
110 } | 113 } |
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180 float* dst = channelDataArray->data(); | 183 float* dst = channelDataArray->data(); |
181 memmove(dst, src, m_length * sizeof(*dst)); | 184 memmove(dst, src, m_length * sizeof(*dst)); |
182 m_channels.push_back(channelDataArray); | 185 m_channels.push_back(channelDataArray); |
183 } | 186 } |
184 } | 187 } |
185 | 188 |
186 DOMFloat32Array* AudioBuffer::getChannelData(unsigned channelIndex, | 189 DOMFloat32Array* AudioBuffer::getChannelData(unsigned channelIndex, |
187 ExceptionState& exceptionState) { | 190 ExceptionState& exceptionState) { |
188 if (channelIndex >= m_channels.size()) { | 191 if (channelIndex >= m_channels.size()) { |
189 exceptionState.throwDOMException( | 192 exceptionState.throwDOMException( |
190 IndexSizeError, "channel index (" + String::number(channelIndex) + | 193 IndexSizeError, |
191 ") exceeds number of channels (" + | 194 "channel index (" + String::number(channelIndex) + |
192 String::number(m_channels.size()) + ")"); | 195 ") exceeds number of channels (" + |
| 196 String::number(m_channels.size()) + ")"); |
193 return nullptr; | 197 return nullptr; |
194 } | 198 } |
195 | 199 |
196 return getChannelData(channelIndex); | 200 return getChannelData(channelIndex); |
197 } | 201 } |
198 | 202 |
199 DOMFloat32Array* AudioBuffer::getChannelData(unsigned channelIndex) { | 203 DOMFloat32Array* AudioBuffer::getChannelData(unsigned channelIndex) { |
200 if (channelIndex >= m_channels.size()) | 204 if (channelIndex >= m_channels.size()) |
201 return nullptr; | 205 return nullptr; |
202 | 206 |
203 return m_channels[channelIndex].get(); | 207 return m_channels[channelIndex].get(); |
204 } | 208 } |
205 | 209 |
206 void AudioBuffer::copyFromChannel(DOMFloat32Array* destination, | 210 void AudioBuffer::copyFromChannel(DOMFloat32Array* destination, |
207 long channelNumber, | 211 long channelNumber, |
208 ExceptionState& exceptionState) { | 212 ExceptionState& exceptionState) { |
209 return copyFromChannel(destination, channelNumber, 0, exceptionState); | 213 return copyFromChannel(destination, channelNumber, 0, exceptionState); |
210 } | 214 } |
211 | 215 |
212 void AudioBuffer::copyFromChannel(DOMFloat32Array* destination, | 216 void AudioBuffer::copyFromChannel(DOMFloat32Array* destination, |
213 long channelNumber, | 217 long channelNumber, |
214 unsigned long startInChannel, | 218 unsigned long startInChannel, |
215 ExceptionState& exceptionState) { | 219 ExceptionState& exceptionState) { |
216 if (channelNumber < 0 || | 220 if (channelNumber < 0 || |
217 channelNumber >= static_cast<long>(m_channels.size())) { | 221 channelNumber >= static_cast<long>(m_channels.size())) { |
218 exceptionState.throwDOMException( | 222 exceptionState.throwDOMException( |
219 IndexSizeError, ExceptionMessages::indexOutsideRange( | 223 IndexSizeError, |
220 "channelNumber", channelNumber, 0L, | 224 ExceptionMessages::indexOutsideRange( |
221 ExceptionMessages::InclusiveBound, | 225 "channelNumber", channelNumber, 0L, |
222 static_cast<long>(m_channels.size() - 1), | 226 ExceptionMessages::InclusiveBound, |
223 ExceptionMessages::InclusiveBound)); | 227 static_cast<long>(m_channels.size() - 1), |
| 228 ExceptionMessages::InclusiveBound)); |
224 return; | 229 return; |
225 } | 230 } |
226 | 231 |
227 DOMFloat32Array* channelData = m_channels[channelNumber].get(); | 232 DOMFloat32Array* channelData = m_channels[channelNumber].get(); |
228 | 233 |
229 if (startInChannel >= channelData->length()) { | 234 if (startInChannel >= channelData->length()) { |
230 exceptionState.throwDOMException( | 235 exceptionState.throwDOMException( |
231 IndexSizeError, ExceptionMessages::indexOutsideRange( | 236 IndexSizeError, |
232 "startInChannel", startInChannel, 0UL, | 237 ExceptionMessages::indexOutsideRange( |
233 ExceptionMessages::InclusiveBound, | 238 "startInChannel", startInChannel, 0UL, |
234 static_cast<unsigned long>(channelData->length()), | 239 ExceptionMessages::InclusiveBound, |
235 ExceptionMessages::ExclusiveBound)); | 240 static_cast<unsigned long>(channelData->length()), |
| 241 ExceptionMessages::ExclusiveBound)); |
236 | 242 |
237 return; | 243 return; |
238 } | 244 } |
239 | 245 |
240 unsigned count = channelData->length() - startInChannel; | 246 unsigned count = channelData->length() - startInChannel; |
241 count = std::min(destination->length(), count); | 247 count = std::min(destination->length(), count); |
242 | 248 |
243 const float* src = channelData->data(); | 249 const float* src = channelData->data(); |
244 float* dst = destination->data(); | 250 float* dst = destination->data(); |
245 | 251 |
246 DCHECK(src); | 252 DCHECK(src); |
247 DCHECK(dst); | 253 DCHECK(dst); |
248 | 254 |
249 memcpy(dst, src + startInChannel, count * sizeof(*src)); | 255 memcpy(dst, src + startInChannel, count * sizeof(*src)); |
250 } | 256 } |
251 | 257 |
252 void AudioBuffer::copyToChannel(DOMFloat32Array* source, | 258 void AudioBuffer::copyToChannel(DOMFloat32Array* source, |
253 long channelNumber, | 259 long channelNumber, |
254 ExceptionState& exceptionState) { | 260 ExceptionState& exceptionState) { |
255 return copyToChannel(source, channelNumber, 0, exceptionState); | 261 return copyToChannel(source, channelNumber, 0, exceptionState); |
256 } | 262 } |
257 | 263 |
258 void AudioBuffer::copyToChannel(DOMFloat32Array* source, | 264 void AudioBuffer::copyToChannel(DOMFloat32Array* source, |
259 long channelNumber, | 265 long channelNumber, |
260 unsigned long startInChannel, | 266 unsigned long startInChannel, |
261 ExceptionState& exceptionState) { | 267 ExceptionState& exceptionState) { |
262 if (channelNumber < 0 || | 268 if (channelNumber < 0 || |
263 channelNumber >= static_cast<long>(m_channels.size())) { | 269 channelNumber >= static_cast<long>(m_channels.size())) { |
264 exceptionState.throwDOMException( | 270 exceptionState.throwDOMException( |
265 IndexSizeError, ExceptionMessages::indexOutsideRange( | 271 IndexSizeError, |
266 "channelNumber", channelNumber, 0L, | 272 ExceptionMessages::indexOutsideRange( |
267 ExceptionMessages::InclusiveBound, | 273 "channelNumber", channelNumber, 0L, |
268 static_cast<long>(m_channels.size() - 1), | 274 ExceptionMessages::InclusiveBound, |
269 ExceptionMessages::InclusiveBound)); | 275 static_cast<long>(m_channels.size() - 1), |
| 276 ExceptionMessages::InclusiveBound)); |
270 return; | 277 return; |
271 } | 278 } |
272 | 279 |
273 DOMFloat32Array* channelData = m_channels[channelNumber].get(); | 280 DOMFloat32Array* channelData = m_channels[channelNumber].get(); |
274 | 281 |
275 if (startInChannel >= channelData->length()) { | 282 if (startInChannel >= channelData->length()) { |
276 exceptionState.throwDOMException( | 283 exceptionState.throwDOMException( |
277 IndexSizeError, ExceptionMessages::indexOutsideRange( | 284 IndexSizeError, |
278 "startInChannel", startInChannel, 0UL, | 285 ExceptionMessages::indexOutsideRange( |
279 ExceptionMessages::InclusiveBound, | 286 "startInChannel", startInChannel, 0UL, |
280 static_cast<unsigned long>(channelData->length()), | 287 ExceptionMessages::InclusiveBound, |
281 ExceptionMessages::ExclusiveBound)); | 288 static_cast<unsigned long>(channelData->length()), |
| 289 ExceptionMessages::ExclusiveBound)); |
282 | 290 |
283 return; | 291 return; |
284 } | 292 } |
285 | 293 |
286 unsigned count = channelData->length() - startInChannel; | 294 unsigned count = channelData->length() - startInChannel; |
287 count = std::min(source->length(), count); | 295 count = std::min(source->length(), count); |
288 | 296 |
289 const float* src = source->data(); | 297 const float* src = source->data(); |
290 float* dst = channelData->data(); | 298 float* dst = channelData->data(); |
291 | 299 |
292 DCHECK(src); | 300 DCHECK(src); |
293 DCHECK(dst); | 301 DCHECK(dst); |
294 | 302 |
295 memcpy(dst + startInChannel, src, count * sizeof(*dst)); | 303 memcpy(dst + startInChannel, src, count * sizeof(*dst)); |
296 } | 304 } |
297 | 305 |
298 void AudioBuffer::zero() { | 306 void AudioBuffer::zero() { |
299 for (unsigned i = 0; i < m_channels.size(); ++i) { | 307 for (unsigned i = 0; i < m_channels.size(); ++i) { |
300 if (DOMFloat32Array* array = getChannelData(i)) { | 308 if (DOMFloat32Array* array = getChannelData(i)) { |
301 float* data = array->data(); | 309 float* data = array->data(); |
302 memset(data, 0, length() * sizeof(*data)); | 310 memset(data, 0, length() * sizeof(*data)); |
303 } | 311 } |
304 } | 312 } |
305 } | 313 } |
306 | 314 |
307 } // namespace blink | 315 } // namespace blink |
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