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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* 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"
#include "platform/mediastream/MediaStreamSource.h"
namespace blink {
PassRefPtr<MediaStreamSource> MediaStreamSource::create(const String& id, Type type, const String& name, ReadyState readyState, bool requiresConsumer)
{
return adoptRef(new MediaStreamSource(id, type, name, readyState, requiresConsumer));
}
MediaStreamSource::MediaStreamSource(const String& id, Type type, const String& name, ReadyState readyState, bool requiresConsumer)
: m_id(id)
, m_type(type)
, m_name(name)
, m_readyState(readyState)
, m_requiresConsumer(requiresConsumer)
{
}
void MediaStreamSource::setReadyState(ReadyState readyState)
{
if (m_readyState != ReadyStateEnded && m_readyState != readyState) {
m_readyState = readyState;
for (Vector<Observer*>::iterator i = m_observers.begin(); i != m_observers.end(); ++i)
(*i)->sourceChangedState();
}
}
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 != kNotFound)
m_observers.remove(pos);
}
void MediaStreamSource::addAudioConsumer(PassRefPtr<AudioDestinationConsumer> consumer)
{
ASSERT(m_requiresConsumer);
MutexLocker locker(m_audioConsumersLock);
m_audioConsumers.append(consumer);
}
bool MediaStreamSource::removeAudioConsumer(AudioDestinationConsumer* consumer)
{
ASSERT(m_requiresConsumer);
MutexLocker locker(m_audioConsumersLock);
size_t pos = m_audioConsumers.find(consumer);
if (pos != kNotFound) {
m_audioConsumers.remove(pos);
return true;
}
return false;
}
void MediaStreamSource::setAudioFormat(size_t numberOfChannels, float sampleRate)
{
ASSERT(m_requiresConsumer);
MutexLocker locker(m_audioConsumersLock);
for (Vector<RefPtr<AudioDestinationConsumer> >::iterator it = m_audioConsumers.begin(); it != m_audioConsumers.end(); ++it)
(*it)->setFormat(numberOfChannels, sampleRate);
}
void MediaStreamSource::consumeAudio(AudioBus* bus, size_t numberOfFrames)
{
ASSERT(m_requiresConsumer);
MutexLocker locker(m_audioConsumersLock);
for (Vector<RefPtr<AudioDestinationConsumer> >::iterator it = m_audioConsumers.begin(); it != m_audioConsumers.end(); ++it)
(*it)->consumeAudio(bus, numberOfFrames);
}
} // namespace blink