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Bug 1006024 - Part 8: Replace AutoPushJSContext in ScriptProcessorNode - Command::Run. r=bholley

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This commit is contained in:
Bob Owen 2014-05-09 19:57:24 +01:00
parent 87efa3f706
commit 8d52d51ac6
1 changed files with 45 additions and 38 deletions
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83
content/media/webaudio/ScriptProcessorNode.cpp
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@ -12,7 +12,7 @@
#include "AudioNodeStream.h"
#include "AudioProcessingEvent.h"
#include "WebAudioUtils.h"
#include "nsCxPusher.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/Mutex.h"
#include "mozilla/PodOperations.h"
#include <deque>
@ -402,44 +402,51 @@ private:
return NS_OK;
}
AutoPushJSContext cx(node->Context()->GetJSContext());
if (cx) {
// Create the input buffer
nsRefPtr<AudioBuffer> inputBuffer;
if (!mNullInput) {
inputBuffer = new AudioBuffer(node->Context(),
node->BufferSize(),
node->Context()->SampleRate());
if (!inputBuffer->InitializeBuffers(mInputChannels.Length(), cx)) {
return NS_OK;
}
// Put the channel data inside it
for (uint32_t i = 0; i < mInputChannels.Length(); ++i) {
inputBuffer->SetRawChannelContents(cx, i, mInputChannels[i]);
}
}
// Ask content to produce data in the output buffer
// Note that we always avoid creating the output buffer here, and we try to
// avoid creating the input buffer as well. The AudioProcessingEvent class
// knows how to lazily create them if needed once the script tries to access
// them. Otherwise, we may be able to get away without creating them!
nsRefPtr<AudioProcessingEvent> event = new AudioProcessingEvent(node, nullptr, nullptr);
event->InitEvent(inputBuffer,
mInputChannels.Length(),
mPlaybackTime);
node->DispatchTrustedEvent(event);
// Steal the output buffers
nsRefPtr<ThreadSharedFloatArrayBufferList> output;
if (event->HasOutputBuffer()) {
output = event->OutputBuffer()->GetThreadSharedChannelsForRate(cx);
}
// Append it to our output buffer queue
node->GetSharedBuffers()->FinishProducingOutputBuffer(output, node->BufferSize());
// Get the global for the context so that we can enter its compartment.
JSObject* global = node->Context()->GetGlobalJSObject();
if (NS_WARN_IF(!global)) {
return NS_OK;
}
AutoJSAPI jsapi;
JSContext* cx = jsapi.cx();
JSAutoCompartment ac(cx, global);
// Create the input buffer
nsRefPtr<AudioBuffer> inputBuffer;
if (!mNullInput) {
inputBuffer = new AudioBuffer(node->Context(),
node->BufferSize(),
node->Context()->SampleRate());
if (!inputBuffer->InitializeBuffers(mInputChannels.Length(), cx)) {
return NS_OK;
}
// Put the channel data inside it
for (uint32_t i = 0; i < mInputChannels.Length(); ++i) {
inputBuffer->SetRawChannelContents(cx, i, mInputChannels[i]);
}
}
// Ask content to produce data in the output buffer
// Note that we always avoid creating the output buffer here, and we try to
// avoid creating the input buffer as well. The AudioProcessingEvent class
// knows how to lazily create them if needed once the script tries to access
// them. Otherwise, we may be able to get away without creating them!
nsRefPtr<AudioProcessingEvent> event = new AudioProcessingEvent(node, nullptr, nullptr);
event->InitEvent(inputBuffer,
mInputChannels.Length(),
mPlaybackTime);
node->DispatchTrustedEvent(event);
// Steal the output buffers
nsRefPtr<ThreadSharedFloatArrayBufferList> output;
if (event->HasOutputBuffer()) {
output = event->OutputBuffer()->GetThreadSharedChannelsForRate(cx);
}
// Append it to our output buffer queue
node->GetSharedBuffers()->FinishProducingOutputBuffer(output, node->BufferSize());
return NS_OK;
}
private: