The Tor Browser / file comparison
comparison: content/media/webaudio/ChannelSplitterNode.cpp
content/media/webaudio/ChannelSplitterNode.cpp
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
equal
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| -1:000000000000 | 0:828c8f54e406 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim:set ts=2 sw=2 sts=2 et cindent: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "mozilla/dom/ChannelSplitterNode.h" | |
| 8 #include "mozilla/dom/ChannelSplitterNodeBinding.h" | |
| 9 #include "AudioNodeEngine.h" | |
| 10 #include "AudioNodeStream.h" | |
| 11 | |
| 12 namespace mozilla { | |
| 13 namespace dom { | |
| 14 | |
| 15 NS_IMPL_ISUPPORTS_INHERITED0(ChannelSplitterNode, AudioNode) | |
| 16 | |
| 17 class ChannelSplitterNodeEngine : public AudioNodeEngine | |
| 18 { | |
| 19 public: | |
| 20 ChannelSplitterNodeEngine(ChannelSplitterNode* aNode) | |
| 21 : AudioNodeEngine(aNode) | |
| 22 { | |
| 23 MOZ_ASSERT(NS_IsMainThread()); | |
| 24 } | |
| 25 | |
| 26 virtual void ProcessBlocksOnPorts(AudioNodeStream* aStream, | |
| 27 const OutputChunks& aInput, | |
| 28 OutputChunks& aOutput, | |
| 29 bool* aFinished) MOZ_OVERRIDE | |
| 30 { | |
| 31 MOZ_ASSERT(aInput.Length() == 1, "Should only have one input port"); | |
| 32 | |
| 33 aOutput.SetLength(OutputCount()); | |
| 34 for (uint16_t i = 0; i < OutputCount(); ++i) { | |
| 35 if (i < aInput[0].mChannelData.Length()) { | |
| 36 // Split out existing channels | |
| 37 AllocateAudioBlock(1, &aOutput[i]); | |
| 38 AudioBlockCopyChannelWithScale( | |
| 39 static_cast<const float*>(aInput[0].mChannelData[i]), | |
| 40 aInput[0].mVolume, | |
| 41 static_cast<float*>(const_cast<void*>(aOutput[i].mChannelData[0]))); | |
| 42 } else { | |
| 43 // Pad with silent channels if needed | |
| 44 aOutput[i].SetNull(WEBAUDIO_BLOCK_SIZE); | |
| 45 } | |
| 46 } | |
| 47 } | |
| 48 | |
| 49 virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE | |
| 50 { | |
| 51 return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf); | |
| 52 } | |
| 53 }; | |
| 54 | |
| 55 ChannelSplitterNode::ChannelSplitterNode(AudioContext* aContext, | |
| 56 uint16_t aOutputCount) | |
| 57 : AudioNode(aContext, | |
| 58 2, | |
| 59 ChannelCountMode::Max, | |
| 60 ChannelInterpretation::Speakers) | |
| 61 , mOutputCount(aOutputCount) | |
| 62 { | |
| 63 mStream = aContext->Graph()->CreateAudioNodeStream(new ChannelSplitterNodeEngine(this), | |
| 64 MediaStreamGraph::INTERNAL_STREAM); | |
| 65 } | |
| 66 | |
| 67 JSObject* | |
| 68 ChannelSplitterNode::WrapObject(JSContext* aCx) | |
| 69 { | |
| 70 return ChannelSplitterNodeBinding::Wrap(aCx, this); | |
| 71 } | |
| 72 | |
| 73 } | |
| 74 } | |
| 75 |
