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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" |
25 #include "core/dom/CrossThreadTask.h" | 26 #include "core/dom/CrossThreadTask.h" |
26 #include "core/html/HTMLMediaElement.h" | 27 #include "core/html/HTMLMediaElement.h" |
27 #include "core/inspector/ConsoleMessage.h" | 28 #include "core/inspector/ConsoleMessage.h" |
28 #include "modules/webaudio/AbstractAudioContext.h" | 29 #include "modules/webaudio/AbstractAudioContext.h" |
29 #include "modules/webaudio/AudioNodeOutput.h" | 30 #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" | |
36 | 35 |
37 namespace blink { | 36 namespace blink { |
38 | 37 |
39 MediaElementAudioSourceHandler::MediaElementAudioSourceHandler(AudioNode& node,
HTMLMediaElement& mediaElement) | 38 MediaElementAudioSourceHandler::MediaElementAudioSourceHandler(AudioNode& node,
HTMLMediaElement& mediaElement) |
40 : AudioHandler(NodeTypeMediaElementAudioSource, node, node.context()->sample
Rate()) | 39 : AudioHandler(NodeTypeMediaElementAudioSource, node, node.context()->sample
Rate()) |
41 , m_mediaElement(mediaElement) | 40 , m_mediaElement(mediaElement) |
42 , m_sourceNumberOfChannels(0) | 41 , m_sourceNumberOfChannels(0) |
43 , m_sourceSampleRate(0) | 42 , m_sourceSampleRate(0) |
44 , m_passesCurrentSrcCORSAccessCheck(passesCurrentSrcCORSAccessCheck(mediaEle
ment.currentSrc())) | 43 , m_passesCurrentSrcCORSAccessCheck(passesCurrentSrcCORSAccessCheck(mediaEle
ment.currentSrc())) |
45 , m_maybePrintCORSMessage(!m_passesCurrentSrcCORSAccessCheck) | 44 , m_maybePrintCORSMessage(!m_passesCurrentSrcCORSAccessCheck) |
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84 | 83 |
85 // Synchronize with process() to protect m_sourceNumberOfChannels, | 84 // Synchronize with process() to protect m_sourceNumberOfChannels, |
86 // m_sourceSampleRate, and m_multiChannelResampler. | 85 // m_sourceSampleRate, and m_multiChannelResampler. |
87 Locker<MediaElementAudioSourceHandler> locker(*this); | 86 Locker<MediaElementAudioSourceHandler> locker(*this); |
88 | 87 |
89 m_sourceNumberOfChannels = numberOfChannels; | 88 m_sourceNumberOfChannels = numberOfChannels; |
90 m_sourceSampleRate = sourceSampleRate; | 89 m_sourceSampleRate = sourceSampleRate; |
91 | 90 |
92 if (sourceSampleRate != sampleRate()) { | 91 if (sourceSampleRate != sampleRate()) { |
93 double scaleFactor = sourceSampleRate / sampleRate(); | 92 double scaleFactor = sourceSampleRate / sampleRate(); |
94 m_multiChannelResampler = wrapUnique(new MultiChannelResampler(scale
Factor, numberOfChannels)); | 93 m_multiChannelResampler = adoptPtr(new MultiChannelResampler(scaleFa
ctor, numberOfChannels)); |
95 } else { | 94 } else { |
96 // Bypass resampling. | 95 // Bypass resampling. |
97 m_multiChannelResampler.reset(); | 96 m_multiChannelResampler.reset(); |
98 } | 97 } |
99 | 98 |
100 { | 99 { |
101 // The context must be locked when changing the number of output cha
nnels. | 100 // The context must be locked when changing the number of output cha
nnels. |
102 AbstractAudioContext::AutoLocker contextLocker(context()); | 101 AbstractAudioContext::AutoLocker contextLocker(context()); |
103 | 102 |
104 // Do any necesssary re-configuration to the output's number of chan
nels. | 103 // Do any necesssary re-configuration to the output's number of chan
nels. |
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266 mediaElementAudioSourceHandler().lock(); | 265 mediaElementAudioSourceHandler().lock(); |
267 } | 266 } |
268 | 267 |
269 void MediaElementAudioSourceNode::unlock() | 268 void MediaElementAudioSourceNode::unlock() |
270 { | 269 { |
271 mediaElementAudioSourceHandler().unlock(); | 270 mediaElementAudioSourceHandler().unlock(); |
272 } | 271 } |
273 | 272 |
274 } // namespace blink | 273 } // namespace blink |
275 | 274 |
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