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/*
* Copyright (C) 2019 Apple 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"
#include "MockAudioDestinationCocoa.h"
#if ENABLE(WEB_AUDIO)
#include "AudioUtilitiesCocoa.h"
#include "CAAudioStreamDescription.h"
#include "WebAudioBufferList.h"
namespace WebCore {
const int kRenderBufferSize = 128;
MockAudioDestinationCocoa::MockAudioDestinationCocoa(AudioIOCallback& callback, float sampleRate)
: AudioDestinationCocoa(callback, 2, sampleRate)
, m_workQueue(WorkQueue::create("MockAudioDestinationCocoa Render Queue"))
, m_timer(RunLoop::current(), this, &MockAudioDestinationCocoa::tick)
{
}
MockAudioDestinationCocoa::~MockAudioDestinationCocoa() = default;
void MockAudioDestinationCocoa::startRendering(CompletionHandler<void(bool)>&& completionHandler)
{
m_timer.startRepeating(Seconds { m_numberOfFramesToProcess / sampleRate() });
setIsPlaying(true);
callOnMainThread([completionHandler = WTFMove(completionHandler)]() mutable {
completionHandler(true);
});
}
void MockAudioDestinationCocoa::stopRendering(CompletionHandler<void(bool)>&& completionHandler)
{
m_timer.stop();
setIsPlaying(false);
callOnMainThread([completionHandler = WTFMove(completionHandler)]() mutable {
completionHandler(true);
});
}
void MockAudioDestinationCocoa::tick()
{
m_workQueue->dispatch([this, protectedThis = Ref { *this }, sampleRate = sampleRate(), numberOfFramesToProcess = m_numberOfFramesToProcess] {
AudioStreamBasicDescription streamFormat = audioStreamBasicDescriptionForAudioBus(m_outputBus);
WebAudioBufferList webAudioBufferList { streamFormat, numberOfFramesToProcess };
render(0., 0, numberOfFramesToProcess, webAudioBufferList.list());
});
}
} // namespace WebCore
#endif // ENABLE(WEB_AUDIO)
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