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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
* Copyright (C) 2013 Apple Inc. All rights reserved.
* Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of Google Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(MEDIA_STREAM)
#include "MediaStreamSource.h"
#include "MediaStreamCenter.h"
#include "MediaStreamSourceCapabilities.h"
#include "UUID.h"
namespace WebCore {
MediaStreamSource::MediaStreamSource(const String& id, Type type, const String& name)
: m_id(id)
, m_type(type)
, m_name(name)
, m_readyState(New)
, m_enabled(true)
, m_muted(false)
, m_readonly(false)
, m_remote(false)
{
if (!m_id.isEmpty())
return;
m_id = createCanonicalUUIDString();
}
void MediaStreamSource::reset()
{
m_readyState = New;
m_enabled = true;
m_muted = false;
m_readonly = false;
m_remote = false;
}
void MediaStreamSource::setReadyState(ReadyState readyState)
{
if (m_readyState == Ended || m_readyState == readyState)
return;
m_readyState = readyState;
for (auto observer = m_observers.begin(); observer != m_observers.end(); ++observer)
(*observer)->sourceReadyStateChanged();
if (m_readyState == Live) {
startProducingData();
return;
}
// There are no more consumers of this source's data, shut it down as appropriate.
if (m_readyState == Ended)
stopProducingData();
}
void MediaStreamSource::addObserver(MediaStreamSource::Observer* observer)
{
m_observers.append(observer);
}
void MediaStreamSource::removeObserver(MediaStreamSource::Observer* observer)
{
size_t pos = m_observers.find(observer);
if (pos != notFound)
m_observers.remove(pos);
if (!m_observers.size())
stop();
}
void MediaStreamSource::setMuted(bool muted)
{
if (m_muted == muted)
return;
m_muted = muted;
if (m_readyState == Ended)
return;
for (auto observer = m_observers.begin(); observer != m_observers.end(); ++observer)
(*observer)->sourceMutedChanged();
}
void MediaStreamSource::setEnabled(bool enabled)
{
if (!enabled) {
// Don't disable the source unless all observers are disabled.
for (auto observer = m_observers.begin(); observer != m_observers.end(); ++observer) {
if ((*observer)->observerIsEnabled())
return;
}
}
if (m_enabled == enabled)
return;
m_enabled = enabled;
if (m_readyState == Ended)
return;
if (!enabled)
stopProducingData();
else
startProducingData();
for (auto observer = m_observers.begin(); observer != m_observers.end(); ++observer)
(*observer)->sourceEnabledChanged();
}
bool MediaStreamSource::readonly() const
{
return m_readonly;
}
void MediaStreamSource::stop()
{
// This is called from the track.stop() method, which should "Permanently stop the generation of data
// for track's source", so go straight to ended. This will notify any other tracks using this source
// that it is no longer available.
setReadyState(Ended);
}
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM)
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