gecko/dom/ipc/AudioParent.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et tw=80 : */
2012-05-21 04:12:37 -07:00
/* 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/AudioParent.h"
#include "mozilla/unused.h"
#include "nsThreadUtils.h"
// C++ file contents
namespace mozilla {
namespace dom {
class AudioWriteDoneEvent : public nsRunnable
{
public:
AudioWriteDoneEvent(AudioParent* owner)
{
mOwner = owner;
}
NS_IMETHOD Run()
{
mOwner->SendWriteDone();
return NS_OK;
}
private:
nsRefPtr<AudioParent> mOwner;
};
class AudioWriteEvent : public nsRunnable
{
public:
AudioWriteEvent(AudioParent* parent, nsAudioStream* owner, nsCString data, PRUint32 frames)
{
mParent = parent;
mOwner = owner;
mData = data;
mFrames = frames;
}
NS_IMETHOD Run()
{
mOwner->Write(mData.get(), mFrames);
nsCOMPtr<nsIRunnable> event = new AudioWriteDoneEvent(mParent);
NS_DispatchToMainThread(event);
return NS_OK;
}
private:
nsRefPtr<AudioParent> mParent;
nsRefPtr<nsAudioStream> mOwner;
nsCString mData;
PRUint32 mFrames;
};
class AudioPauseEvent : public nsRunnable
{
public:
AudioPauseEvent(nsAudioStream* owner, bool aPause)
{
mOwner = owner;
mPause = aPause;
}
NS_IMETHOD Run()
{
if (mPause)
mOwner->Pause();
else
mOwner->Resume();
return NS_OK;
}
private:
nsRefPtr<nsAudioStream> mOwner;
bool mPause;
};
class AudioStreamShutdownEvent : public nsRunnable
{
public:
AudioStreamShutdownEvent(nsAudioStream* owner)
{
mOwner = owner;
}
NS_IMETHOD Run()
{
mOwner->Shutdown();
return NS_OK;
}
private:
nsRefPtr<nsAudioStream> mOwner;
};
class AudioMinWriteSizeDone : public nsRunnable
{
public:
AudioMinWriteSizeDone(AudioParent* owner, PRInt32 minFrames)
{
mOwner = owner;
mMinFrames = minFrames;
}
NS_IMETHOD Run()
{
mOwner->SendMinWriteSizeDone(mMinFrames);
return NS_OK;
}
private:
nsRefPtr<AudioParent> mOwner;
PRInt32 mMinFrames;
};
class AudioMinWriteSizeEvent : public nsRunnable
{
public:
AudioMinWriteSizeEvent(AudioParent* parent, nsAudioStream* owner)
{
mParent = parent;
mOwner = owner;
}
NS_IMETHOD Run()
{
PRInt32 minFrames = mOwner->GetMinWriteSize();
nsCOMPtr<nsIRunnable> event = new AudioMinWriteSizeDone(mParent, minFrames);
NS_DispatchToMainThread(event);
return NS_OK;
}
private:
nsRefPtr<nsAudioStream> mOwner;
nsRefPtr<AudioParent> mParent;
};
class AudioDrainDoneEvent : public nsRunnable
{
public:
AudioDrainDoneEvent(AudioParent* owner)
{
mOwner = owner;
}
NS_IMETHOD Run()
{
mOwner->SendDrainDone();
return NS_OK;
}
private:
nsRefPtr<AudioParent> mOwner;
};
class AudioDrainEvent : public nsRunnable
{
public:
AudioDrainEvent(AudioParent* parent, nsAudioStream* owner)
{
mParent = parent;
mOwner = owner;
}
NS_IMETHOD Run()
{
mOwner->Drain();
nsCOMPtr<nsIRunnable> event = new AudioDrainDoneEvent(mParent);
NS_DispatchToMainThread(event);
return NS_OK;
}
private:
nsRefPtr<nsAudioStream> mOwner;
nsRefPtr<AudioParent> mParent;
};
NS_IMPL_THREADSAFE_ISUPPORTS1(AudioParent, nsITimerCallback)
nsresult
AudioParent::Notify(nsITimer* timer)
{
if (!mIPCOpen) {
timer->Cancel();
return NS_ERROR_FAILURE;
}
NS_ASSERTION(mStream, "AudioStream not initialized.");
PRInt64 position = mStream->GetPositionInFrames();
unused << SendPositionInFramesUpdate(position, PR_IntervalNow());
return NS_OK;
}
bool
AudioParent::RecvWrite(const nsCString& data, const PRUint32& frames)
{
if (!mStream)
return false;
nsCOMPtr<nsIRunnable> event = new AudioWriteEvent(this, mStream, data, frames);
nsCOMPtr<nsIThread> thread = mStream->GetThread();
thread->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
return true;
}
bool
AudioParent::RecvSetVolume(const float& aVolume)
{
if (!mStream)
return false;
mStream->SetVolume(aVolume);
return true;
}
bool
AudioParent::RecvMinWriteSize()
{
if (!mStream)
return false;
nsCOMPtr<nsIRunnable> event = new AudioMinWriteSizeEvent(this, mStream);
nsCOMPtr<nsIThread> thread = mStream->GetThread();
thread->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
return true;
}
bool
AudioParent::RecvDrain()
{
if (!mStream)
return false;
nsCOMPtr<nsIRunnable> event = new AudioDrainEvent(this, mStream);
nsCOMPtr<nsIThread> thread = mStream->GetThread();
thread->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
return true;
}
bool
AudioParent::RecvPause()
{
if (!mStream)
return false;
nsCOMPtr<nsIRunnable> event = new AudioPauseEvent(mStream, true);
nsCOMPtr<nsIThread> thread = mStream->GetThread();
thread->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
return true;
}
bool
AudioParent::RecvResume()
{
if (!mStream)
return false;
nsCOMPtr<nsIRunnable> event = new AudioPauseEvent(mStream, false);
nsCOMPtr<nsIThread> thread = mStream->GetThread();
thread->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
return true;
}
bool
AudioParent::RecvShutdown()
{
Shutdown();
unused << PAudioParent::Send__delete__(this);
return true;
}
bool
AudioParent::SendMinWriteSizeDone(PRInt32 minFrames)
{
if (mIPCOpen)
return PAudioParent::SendMinWriteSizeDone(minFrames);
return true;
}
bool
AudioParent::SendDrainDone()
{
if (mIPCOpen)
return PAudioParent::SendDrainDone();
return true;
}
bool
AudioParent::SendWriteDone()
{
if (mIPCOpen)
return PAudioParent::SendWriteDone();
return true;
}
AudioParent::AudioParent(PRInt32 aNumChannels, PRInt32 aRate, PRInt32 aFormat)
: mIPCOpen(true)
{
mStream = nsAudioStream::AllocateStream();
NS_ASSERTION(mStream, "AudioStream allocation failed.");
if (NS_FAILED(mStream->Init(aNumChannels, aRate))) {
NS_WARNING("AudioStream initialization failed.");
mStream = nullptr;
return;
}
mTimer = do_CreateInstance("@mozilla.org/timer;1");
mTimer->InitWithCallback(this, 1000, nsITimer::TYPE_REPEATING_SLACK);
}
AudioParent::~AudioParent()
{
}
void
AudioParent::ActorDestroy(ActorDestroyReason aWhy)
{
mIPCOpen = false;
Shutdown();
}
void
AudioParent::Shutdown()
{
if (mTimer) {
mTimer->Cancel();
mTimer = nullptr;
}
if (mStream) {
nsCOMPtr<nsIRunnable> event = new AudioStreamShutdownEvent(mStream);
nsCOMPtr<nsIThread> thread = mStream->GetThread();
thread->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
mStream = nullptr;
}
}
} // namespace dom
} // namespace mozilla