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 : */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Audio IPC
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Doug Turner <dougt@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "mozilla/dom/AudioParent.h"
#include "mozilla/unused.h"
#include "nsThreadUtils.h"
// C++ file contents
namespace mozilla {
namespace dom {
class AudioWriteEvent : public nsRunnable
{
public:
AudioWriteEvent(nsAudioStream* owner, nsCString data, PRUint32 count)
{
mOwner = owner;
mData = data;
mCount = count;
}
NS_IMETHOD Run()
{
mOwner->Write(mData.get(), mCount);
return NS_OK;
}
private:
nsRefPtr<nsAudioStream> mOwner;
nsCString mData;
PRUint32 mCount;
};
class AudioPauseEvent : public nsRunnable
{
public:
AudioPauseEvent(nsAudioStream* owner, PRBool aPause)
{
mOwner = owner;
mPause = aPause;
}
NS_IMETHOD Run()
{
if (mPause)
mOwner->Pause();
else
mOwner->Resume();
return NS_OK;
}
private:
nsRefPtr<nsAudioStream> mOwner;
PRBool mPause;
};
class AudioStreamShutdownEvent : public nsRunnable
{
public:
AudioStreamShutdownEvent(nsAudioStream* owner)
{
mOwner = owner;
}
NS_IMETHOD Run()
{
mOwner->Shutdown();
return NS_OK;
}
private:
nsRefPtr<nsAudioStream> mOwner;
};
class AudioMinWriteSampleDone : public nsRunnable
{
public:
AudioMinWriteSampleDone(AudioParent* owner, PRInt32 minSamples)
{
mOwner = owner;
mMinSamples = minSamples;
}
NS_IMETHOD Run()
{
mOwner->SendMinWriteSampleDone(mMinSamples);
return NS_OK;
}
private:
nsRefPtr<AudioParent> mOwner;
PRInt32 mMinSamples;
};
class AudioMinWriteSampleEvent : public nsRunnable
{
public:
AudioMinWriteSampleEvent(AudioParent* parent, nsAudioStream* owner)
{
mParent = parent;
mOwner = owner;
}
NS_IMETHOD Run()
{
PRInt32 minSamples = mOwner->GetMinWriteSamples();
nsCOMPtr<nsIRunnable> event = new AudioMinWriteSampleDone(mParent, minSamples);
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 offset = mStream->GetSampleOffset();
unused << SendSampleOffsetUpdate(offset, PR_IntervalNow());
return NS_OK;
}
bool
AudioParent::RecvWrite(
const nsCString& data,
const PRUint32& count)
{
if (!mStream)
return false;
nsCOMPtr<nsIRunnable> event = new AudioWriteEvent(mStream, data, count);
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::RecvMinWriteSample()
{
if (!mStream)
return false;
nsCOMPtr<nsIRunnable> event = new AudioMinWriteSampleEvent(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, PR_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, PR_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::SendMinWriteSampleDone(PRInt32 minSamples)
{
if (mIPCOpen)
return PAudioParent::SendMinWriteSampleDone(minSamples);
return true;
}
bool
AudioParent::SendDrainDone()
{
if (mIPCOpen)
return PAudioParent::SendDrainDone();
return true;
}
AudioParent::AudioParent(PRInt32 aNumChannels, PRInt32 aRate, PRInt32 aFormat)
: mIPCOpen(PR_TRUE)
{
mStream = nsAudioStream::AllocateStream();
NS_ASSERTION(mStream, "AudioStream allocation failed.");
if (NS_FAILED(mStream->Init(aNumChannels,
aRate,
(nsAudioStream::SampleFormat) aFormat))) {
NS_WARNING("AudioStream initialization failed.");
mStream = nsnull;
return;
}
mTimer = do_CreateInstance("@mozilla.org/timer;1");
mTimer->InitWithCallback(this, 1000, nsITimer::TYPE_REPEATING_SLACK);
}
AudioParent::~AudioParent()
{
}
void
AudioParent::ActorDestroy(ActorDestroyReason aWhy)
{
mIPCOpen = PR_FALSE;
Shutdown();
}
void
AudioParent::Shutdown()
{
if (mTimer) {
mTimer->Cancel();
mTimer = nsnull;
}
if (mStream) {
nsCOMPtr<nsIRunnable> event = new AudioStreamShutdownEvent(mStream);
nsCOMPtr<nsIThread> thread = mStream->GetThread();
thread->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
mStream = nsnull;
}
}
} // namespace dom
} // namespace mozilla