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1 /* | 1 /* |
2 * Copyright (C) 2012, Google Inc. All rights reserved. | 2 * Copyright (C) 2012, 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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138 { | 138 { |
139 ASSERT(isMainThread()); | 139 ASSERT(isMainThread()); |
140 | 140 |
141 if (m_playbackState != UNSCHEDULED_STATE) { | 141 if (m_playbackState != UNSCHEDULED_STATE) { |
142 exceptionState.throwDOMException( | 142 exceptionState.throwDOMException( |
143 InvalidStateError, | 143 InvalidStateError, |
144 "cannot call start more than once."); | 144 "cannot call start more than once."); |
145 return; | 145 return; |
146 } | 146 } |
147 | 147 |
148 if (!std::isfinite(when) || (when < 0)) { | 148 if (when < 0) { |
149 exceptionState.throwDOMException( | 149 exceptionState.throwDOMException( |
150 InvalidAccessError, | 150 InvalidAccessError, |
151 "Start time must be a finite non-negative number: " + String::number
(when)); | 151 "Start time must be a finite non-negative number: " + String::number
(when)); |
152 return; | 152 return; |
153 } | 153 } |
154 | 154 |
155 // The node is started. Add a reference to keep us alive so that audio will
eventually get | 155 // The node is started. Add a reference to keep us alive so that audio will
eventually get |
156 // played even if Javascript should drop all references to this node. The re
ference will get | 156 // played even if Javascript should drop all references to this node. The re
ference will get |
157 // dropped when the source has finished playing. | 157 // dropped when the source has finished playing. |
158 context()->refNode(this); | 158 context()->refNode(this); |
159 | 159 |
160 m_startTime = when; | 160 m_startTime = when; |
161 m_playbackState = SCHEDULED_STATE; | 161 m_playbackState = SCHEDULED_STATE; |
162 } | 162 } |
163 | 163 |
164 void AudioScheduledSourceNode::stop(double when, ExceptionState& exceptionState) | 164 void AudioScheduledSourceNode::stop(double when, ExceptionState& exceptionState) |
165 { | 165 { |
166 ASSERT(isMainThread()); | 166 ASSERT(isMainThread()); |
167 | 167 |
168 if (m_playbackState == UNSCHEDULED_STATE) { | 168 if (m_playbackState == UNSCHEDULED_STATE) { |
169 exceptionState.throwDOMException( | 169 exceptionState.throwDOMException( |
170 InvalidStateError, | 170 InvalidStateError, |
171 "cannot call stop without calling start first."); | 171 "cannot call stop without calling start first."); |
172 return; | 172 return; |
173 } | 173 } |
174 | 174 |
175 if (!std::isfinite(when) || (when < 0)) { | 175 if (when < 0) { |
176 exceptionState.throwDOMException( | 176 exceptionState.throwDOMException( |
177 InvalidAccessError, | 177 InvalidAccessError, |
178 "Stop time must be a finite non-negative number: " + String::number(
when)); | 178 "Stop time must be a non-negative number: " + String::number(when)); |
179 return; | 179 return; |
180 } | 180 } |
181 | 181 |
182 // stop() can be called more than once, with the last call to stop taking ef
fect, unless the | 182 // stop() can be called more than once, with the last call to stop taking ef
fect, unless the |
183 // source has already stopped due to earlier calls to stop. No exceptions ar
e thrown in any | 183 // source has already stopped due to earlier calls to stop. No exceptions ar
e thrown in any |
184 // case. | 184 // case. |
185 when = std::max(0.0, when); | 185 when = std::max(0.0, when); |
186 m_endTime = when; | 186 m_endTime = when; |
187 } | 187 } |
188 | 188 |
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210 } | 210 } |
211 | 211 |
212 void AudioScheduledSourceNode::notifyEnded() | 212 void AudioScheduledSourceNode::notifyEnded() |
213 { | 213 { |
214 dispatchEvent(Event::create(EventTypeNames::ended)); | 214 dispatchEvent(Event::create(EventTypeNames::ended)); |
215 } | 215 } |
216 | 216 |
217 } // namespace blink | 217 } // namespace blink |
218 | 218 |
219 #endif // ENABLE(WEB_AUDIO) | 219 #endif // ENABLE(WEB_AUDIO) |
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