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/*
* Copyright (C) 2010-2014 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(WEB_AUDIO)
#include "DelayNode.h"
#include "DelayOptions.h"
#include "DelayProcessor.h"
#include <wtf/TZoneMallocInlines.h>
#include <wtf/text/MakeString.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(DelayNode);
constexpr double maximumAllowedDelayTime = 180;
inline DelayNode::DelayNode(BaseAudioContext& context, double maxDelayTime)
: AudioBasicProcessorNode(context, NodeTypeDelay)
{
m_processor = makeUnique<DelayProcessor>(context, context.sampleRate(), 1, maxDelayTime);
// Initialize so that AudioParams can be processed.
initialize();
}
ExceptionOr<Ref<DelayNode>> DelayNode::create(BaseAudioContext& context, const DelayOptions& options)
{
if (options.maxDelayTime <= 0)
return Exception { ExceptionCode::NotSupportedError, "maxDelayTime should be a positive value"_s };
if (options.maxDelayTime >= maximumAllowedDelayTime || std::isnan(options.maxDelayTime))
return Exception { ExceptionCode::NotSupportedError, makeString("maxDelayTime should be less than "_s, maximumAllowedDelayTime) };
auto delayNode = adoptRef(*new DelayNode(context, options.maxDelayTime));
auto result = delayNode->handleAudioNodeOptions(options, { 2, ChannelCountMode::Max, ChannelInterpretation::Speakers });
if (result.hasException())
return result.releaseException();
delayNode->delayTime().setValue(options.delayTime);
return delayNode;
}
AudioParam& DelayNode::delayTime()
{
return downcast<DelayProcessor>(*m_processor).delayTime();
}
} // namespace WebCore
#endif // ENABLE(WEB_AUDIO)
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