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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 * 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 |
| 11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
| 12 * | 12 * |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN
Y | 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN
Y |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y | 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y |
| 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N | 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N |
| 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 23 */ | 23 */ |
| 24 | 24 |
| 25 #include "modules/webaudio/MediaElementAudioSourceNode.h" | |
| 26 #include "core/dom/CrossThreadTask.h" | 25 #include "core/dom/CrossThreadTask.h" |
| 27 #include "core/html/HTMLMediaElement.h" | 26 #include "core/html/HTMLMediaElement.h" |
| 28 #include "core/inspector/ConsoleMessage.h" | 27 #include "core/inspector/ConsoleMessage.h" |
| 29 #include "modules/webaudio/AbstractAudioContext.h" | 28 #include "modules/webaudio/AbstractAudioContext.h" |
| 30 #include "modules/webaudio/AudioNodeOutput.h" | 29 #include "modules/webaudio/AudioNodeOutput.h" |
| 30 #include "modules/webaudio/MediaElementAudioSourceNode.h" |
| 31 #include "platform/Logging.h" | 31 #include "platform/Logging.h" |
| 32 #include "platform/audio/AudioUtilities.h" | 32 #include "platform/audio/AudioUtilities.h" |
| 33 #include "platform/weborigin/SecurityOrigin.h" | 33 #include "platform/weborigin/SecurityOrigin.h" |
| 34 #include "wtf/Locker.h" | 34 #include "wtf/Locker.h" |
| 35 #include "wtf/PtrUtil.h" |
| 35 | 36 |
| 36 namespace blink { | 37 namespace blink { |
| 37 | 38 |
| 38 MediaElementAudioSourceHandler::MediaElementAudioSourceHandler(AudioNode& node,
HTMLMediaElement& mediaElement) | 39 MediaElementAudioSourceHandler::MediaElementAudioSourceHandler(AudioNode& node,
HTMLMediaElement& mediaElement) |
| 39 : AudioHandler(NodeTypeMediaElementAudioSource, node, node.context()->sample
Rate()) | 40 : AudioHandler(NodeTypeMediaElementAudioSource, node, node.context()->sample
Rate()) |
| 40 , m_mediaElement(mediaElement) | 41 , m_mediaElement(mediaElement) |
| 41 , m_sourceNumberOfChannels(0) | 42 , m_sourceNumberOfChannels(0) |
| 42 , m_sourceSampleRate(0) | 43 , m_sourceSampleRate(0) |
| 43 , m_passesCurrentSrcCORSAccessCheck(passesCurrentSrcCORSAccessCheck(mediaEle
ment.currentSrc())) | 44 , m_passesCurrentSrcCORSAccessCheck(passesCurrentSrcCORSAccessCheck(mediaEle
ment.currentSrc())) |
| 44 , m_maybePrintCORSMessage(!m_passesCurrentSrcCORSAccessCheck) | 45 , m_maybePrintCORSMessage(!m_passesCurrentSrcCORSAccessCheck) |
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| 83 | 84 |
| 84 // Synchronize with process() to protect m_sourceNumberOfChannels, | 85 // Synchronize with process() to protect m_sourceNumberOfChannels, |
| 85 // m_sourceSampleRate, and m_multiChannelResampler. | 86 // m_sourceSampleRate, and m_multiChannelResampler. |
| 86 Locker<MediaElementAudioSourceHandler> locker(*this); | 87 Locker<MediaElementAudioSourceHandler> locker(*this); |
| 87 | 88 |
| 88 m_sourceNumberOfChannels = numberOfChannels; | 89 m_sourceNumberOfChannels = numberOfChannels; |
| 89 m_sourceSampleRate = sourceSampleRate; | 90 m_sourceSampleRate = sourceSampleRate; |
| 90 | 91 |
| 91 if (sourceSampleRate != sampleRate()) { | 92 if (sourceSampleRate != sampleRate()) { |
| 92 double scaleFactor = sourceSampleRate / sampleRate(); | 93 double scaleFactor = sourceSampleRate / sampleRate(); |
| 93 m_multiChannelResampler = adoptPtr(new MultiChannelResampler(scaleFa
ctor, numberOfChannels)); | 94 m_multiChannelResampler = wrapUnique(new MultiChannelResampler(scale
Factor, numberOfChannels)); |
| 94 } else { | 95 } else { |
| 95 // Bypass resampling. | 96 // Bypass resampling. |
| 96 m_multiChannelResampler.reset(); | 97 m_multiChannelResampler.reset(); |
| 97 } | 98 } |
| 98 | 99 |
| 99 { | 100 { |
| 100 // The context must be locked when changing the number of output cha
nnels. | 101 // The context must be locked when changing the number of output cha
nnels. |
| 101 AbstractAudioContext::AutoLocker contextLocker(context()); | 102 AbstractAudioContext::AutoLocker contextLocker(context()); |
| 102 | 103 |
| 103 // Do any necesssary re-configuration to the output's number of chan
nels. | 104 // Do any necesssary re-configuration to the output's number of chan
nels. |
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| 265 mediaElementAudioSourceHandler().lock(); | 266 mediaElementAudioSourceHandler().lock(); |
| 266 } | 267 } |
| 267 | 268 |
| 268 void MediaElementAudioSourceNode::unlock() | 269 void MediaElementAudioSourceNode::unlock() |
| 269 { | 270 { |
| 270 mediaElementAudioSourceHandler().unlock(); | 271 mediaElementAudioSourceHandler().unlock(); |
| 271 } | 272 } |
| 272 | 273 |
| 273 } // namespace blink | 274 } // namespace blink |
| 274 | 275 |
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