Files
palemoon27/dom/media/webaudio/ChannelMergerNode.cpp
T
roytam1 7bd3227e5d import changes from `dev' branch of rmottola/Arctic-Fox:
- Bug 1141282 - DynamicCompressorNode's readonly 'reduction' should be a float. r=ehsan (4685d2cf8)
- Bug 1153783 - Implement the `detune` AudioParam for the AudioBufferSourceNode. r=ehsan (8e6b3aca4)
- Bug 1134034 - Add a chrome-only parentId and name on AudioParam for devtools. r=ehsan (13815cb94)
- Bug 1159290 - "Add final/override to WebAudio classes". r=padenot (83cb303ea)
- Bug 1161946 - MainThreadMediaStreamListener should be notified just when the stream is finished - patch 1, r=padenot (c2a126103)
- Bug 1161946 - MainThreadMediaStreamListener should be notified just when the stream is finished - patch 2, r=padenot (a1f408cce)
- Bug 1161946 - patch 3 - explicit CTOR for NotifyRunnable CLOSED TREE (f304c1ef0)
- Bug 974089 - Destroy WebAudio MediaStream when a source finishes. r=padenot (66d7e20df)
- Bug 1175510 - Update the AudioBufferSourceNode <=> PannerNode mapping when destroying AudioNodeStream. r=karlt (156741d15)
- bug 1179662 uninline DestroyMediaStream overrides so that mStream type need not be complete r=padenot (08d0ebd62)
- bug 1179662 specify AudioNode::mStream as AudioNodeStream r=padenot (3aaa3a544)
- bug 1179662 handle null AudioNodeStream stream r=padenot (980a8296b)
- bug 914392 don't check engine's Node existence in ProcessBlock r=padenot (583176721)
2021-03-16 09:22:31 +08:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/ChannelMergerNode.h"
#include "mozilla/dom/ChannelMergerNodeBinding.h"
#include "AudioNodeEngine.h"
#include "AudioNodeStream.h"
namespace mozilla {
namespace dom {
NS_IMPL_ISUPPORTS_INHERITED0(ChannelMergerNode, AudioNode)
class ChannelMergerNodeEngine final : public AudioNodeEngine
{
public:
explicit ChannelMergerNodeEngine(ChannelMergerNode* aNode)
: AudioNodeEngine(aNode)
{
MOZ_ASSERT(NS_IsMainThread());
}
virtual void ProcessBlocksOnPorts(AudioNodeStream* aStream,
const OutputChunks& aInput,
OutputChunks& aOutput,
bool* aFinished) override
{
MOZ_ASSERT(aInput.Length() >= 1, "Should have one or more input ports");
// Get the number of output channels, and allocate it
size_t channelCount = 0;
for (uint16_t i = 0; i < InputCount(); ++i) {
channelCount += aInput[i].mChannelData.Length();
}
if (channelCount == 0) {
aOutput[0].SetNull(WEBAUDIO_BLOCK_SIZE);
return;
}
channelCount = std::min(channelCount, WebAudioUtils::MaxChannelCount);
AllocateAudioBlock(channelCount, &aOutput[0]);
// Append each channel in each input to the output
size_t channelIndex = 0;
for (uint16_t i = 0; true; ++i) {
MOZ_ASSERT(i < InputCount());
for (size_t j = 0; j < aInput[i].mChannelData.Length(); ++j) {
AudioBlockCopyChannelWithScale(
static_cast<const float*>(aInput[i].mChannelData[j]),
aInput[i].mVolume,
static_cast<float*>(const_cast<void*>(aOutput[0].mChannelData[channelIndex])));
++channelIndex;
if (channelIndex >= channelCount) {
return;
}
}
}
}
virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override
{
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
}
};
ChannelMergerNode::ChannelMergerNode(AudioContext* aContext,
uint16_t aInputCount)
: AudioNode(aContext,
2,
ChannelCountMode::Max,
ChannelInterpretation::Speakers)
, mInputCount(aInputCount)
{
mStream = aContext->Graph()->CreateAudioNodeStream(new ChannelMergerNodeEngine(this),
MediaStreamGraph::INTERNAL_STREAM);
}
ChannelMergerNode::~ChannelMergerNode()
{
}
JSObject*
ChannelMergerNode::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return ChannelMergerNodeBinding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla