gecko/dom/ipc/AudioChild.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set sw=2 ts=2 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/AudioChild.h"
namespace mozilla {
namespace dom {
NS_IMPL_THREADSAFE_ADDREF(AudioChild);
NS_IMPL_THREADSAFE_RELEASE(AudioChild);
AudioChild::AudioChild()
: mLastSampleOffset(-1),
mLastSampleOffsetTime(0),
mMinWriteSample(-2),// Initial value, -2, error on -1
mAudioReentrantMonitor("AudioChild.mReentrantMonitor"),
mIPCOpen(PR_TRUE),
mDrained(PR_FALSE)
{
MOZ_COUNT_CTOR(AudioChild);
}
AudioChild::~AudioChild()
{
MOZ_COUNT_DTOR(AudioChild);
}
void
AudioChild::ActorDestroy(ActorDestroyReason aWhy)
{
mIPCOpen = PR_FALSE;
}
bool
AudioChild::RecvSampleOffsetUpdate(const PRInt64& offset,
const PRInt64& time)
{
mLastSampleOffset = offset;
mLastSampleOffsetTime = time;
return true;
}
bool
AudioChild::RecvDrainDone()
{
ReentrantMonitorAutoEnter mon(mAudioReentrantMonitor);
mDrained = PR_TRUE;
mAudioReentrantMonitor.NotifyAll();
return true;
}
PRInt32
AudioChild::WaitForMinWriteSample()
{
ReentrantMonitorAutoEnter mon(mAudioReentrantMonitor);
// -2 : initial value
while (mMinWriteSample == -2 && mIPCOpen)
mAudioReentrantMonitor.Wait();
return mMinWriteSample;
}
bool
AudioChild::RecvMinWriteSampleDone(const PRInt32& minSamples)
{
ReentrantMonitorAutoEnter mon(mAudioReentrantMonitor);
mMinWriteSample = minSamples;
mAudioReentrantMonitor.NotifyAll();
return true;
}
void
AudioChild::WaitForDrain()
{
ReentrantMonitorAutoEnter mon(mAudioReentrantMonitor);
while (!mDrained && mIPCOpen) {
mAudioReentrantMonitor.Wait();
}
}
PRInt64
AudioChild::GetLastKnownSampleOffset()
{
return mLastSampleOffset;
}
PRInt64
AudioChild::GetLastKnownSampleOffsetTime()
{
return mLastSampleOffsetTime;
}
} // namespace dom
} // namespace mozilla