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/*
* Copyright (C) 2012, 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 "third_party/blink/renderer/modules/webaudio/audio_summing_junction.h"
#include <algorithm>
#include "third_party/blink/renderer/modules/webaudio/audio_node_output.h"
namespace blink {
AudioSummingJunction::AudioSummingJunction(DeferredTaskHandler& handler)
: deferred_task_handler_(&handler) {}
AudioSummingJunction::~AudioSummingJunction() {
GetDeferredTaskHandler().AssertGraphOwner();
GetDeferredTaskHandler().RemoveMarkedSummingJunction(this);
}
void AudioSummingJunction::ChangedOutputs() {
GetDeferredTaskHandler().AssertGraphOwner();
if (!rendering_state_need_updating_) {
GetDeferredTaskHandler().MarkSummingJunctionDirty(this);
rendering_state_need_updating_ = true;
}
}
void AudioSummingJunction::UpdateRenderingState() {
DCHECK(GetDeferredTaskHandler().IsAudioThread());
GetDeferredTaskHandler().AssertGraphOwner();
if (rendering_state_need_updating_) {
// Copy from `outputs_` to `rendering_outputs_`.
rendering_outputs_.resize(outputs_.size());
unsigned j = 0;
for (AudioNodeOutput* output : outputs_) {
rendering_outputs_[j++] = output;
output->UpdateRenderingState();
}
DidUpdate();
rendering_state_need_updating_ = false;
}
}
} // namespace blink
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