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bug 1205540 don't send more null chunks than necessary to AnalyserNode r=padenot

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This commit is contained in:
Karl Tomlinson 2015-09-09 08:52:39 +12:00
parent 8e55a0c90d
commit 9fc74a7d4a
1 changed files with 15 additions and 0 deletions
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15
dom/media/webaudio/AnalyserNode.cpp
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@ -65,6 +65,19 @@ public:
{
*aOutput = aInput;
if (aInput.IsNull()) {
// If AnalyserNode::mChunks has only null chunks, then there is no need
// to send further null chunks.
if (mChunksToProcess == 0) {
return;
}
--mChunksToProcess;
} else {
// This many null chunks will be required to empty AnalyserNode::mChunks.
mChunksToProcess = CHUNK_COUNT;
}
nsRefPtr<TransferBuffer> transfer =
new TransferBuffer(aStream, aInput.AsAudioChunk());
NS_DispatchToMainThread(transfer);
@ -74,6 +87,8 @@ public:
{
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
}
size_t mChunksToProcess = 0;
};
AnalyserNode::AnalyserNode(AudioContext* aContext)