78 lines
3.1 KiB
C++
78 lines
3.1 KiB
C++
/*
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* Copyright (C) 2012, Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "MediaStreamAudioDestinationNode.h"
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#if ENABLE(WEB_AUDIO) && ENABLE(MEDIA_STREAM)
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#include "AudioContext.h"
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#include "AudioNodeInput.h"
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#include "Document.h"
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#include "MediaStream.h"
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#include "MediaStreamAudioSource.h"
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#include <wtf/IsoMallocInlines.h>
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#include <wtf/Locker.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(MediaStreamAudioDestinationNode);
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ExceptionOr<Ref<MediaStreamAudioDestinationNode>> MediaStreamAudioDestinationNode::create(BaseAudioContext& context, const AudioNodeOptions& options)
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{
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// This behavior is not part of the specification. This is done for consistency with Blink.
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if (context.isStopped() || !context.scriptExecutionContext())
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return Exception { NotAllowedError, "Cannot create a MediaStreamAudioDestinationNode in a detached frame"_s };
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auto node = adoptRef(*new MediaStreamAudioDestinationNode(context));
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auto result = node->handleAudioNodeOptions(options, { 2, ChannelCountMode::Explicit, ChannelInterpretation::Speakers });
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if (result.hasException())
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return result.releaseException();
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return node;
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}
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MediaStreamAudioDestinationNode::MediaStreamAudioDestinationNode(BaseAudioContext& context)
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: AudioBasicInspectorNode(context, NodeTypeMediaStreamAudioDestination)
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, m_source(MediaStreamAudioSource::create(context.sampleRate()))
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, m_stream(MediaStream::create(*context.document(), MediaStreamPrivate::create(context.document()->logger(), m_source.copyRef())))
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{
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initialize();
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}
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MediaStreamAudioDestinationNode::~MediaStreamAudioDestinationNode()
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{
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uninitialize();
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}
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void MediaStreamAudioDestinationNode::process(size_t numberOfFrames)
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{
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m_source->consumeAudio(*input(0)->bus(), numberOfFrames);
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}
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} // namespace WebCore
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#endif // ENABLE(WEB_AUDIO) && ENABLE(MEDIA_STREAM)
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