| /* |
| * 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 "platform/mediastream/MediaStreamSource.h" |
| |
| namespace blink { |
| |
| MediaStreamSource* MediaStreamSource::create(const String& id, |
| StreamType type, |
| const String& name, |
| bool remote, |
| ReadyState readyState, |
| bool requiresConsumer) { |
| return new MediaStreamSource(id, type, name, remote, readyState, |
| requiresConsumer); |
| } |
| |
| MediaStreamSource::MediaStreamSource(const String& id, |
| StreamType type, |
| const String& name, |
| bool remote, |
| ReadyState readyState, |
| bool requiresConsumer) |
| : m_id(id), |
| m_type(type), |
| m_name(name), |
| m_remote(remote), |
| m_readyState(readyState), |
| m_requiresConsumer(requiresConsumer) {} |
| |
| void MediaStreamSource::setReadyState(ReadyState readyState) { |
| if (m_readyState != ReadyStateEnded && m_readyState != readyState) { |
| m_readyState = readyState; |
| |
| // Observers may dispatch events which create and add new Observers; |
| // take a snapshot so as to safely iterate. |
| HeapVector<Member<Observer>> observers; |
| copyToVector(m_observers, observers); |
| for (auto observer : observers) |
| observer->sourceChangedState(); |
| } |
| } |
| |
| void MediaStreamSource::addObserver(MediaStreamSource::Observer* observer) { |
| m_observers.insert(observer); |
| } |
| |
| void MediaStreamSource::addAudioConsumer(AudioDestinationConsumer* consumer) { |
| ASSERT(m_requiresConsumer); |
| MutexLocker locker(m_audioConsumersLock); |
| m_audioConsumers.insert(consumer); |
| } |
| |
| bool MediaStreamSource::removeAudioConsumer( |
| AudioDestinationConsumer* consumer) { |
| ASSERT(m_requiresConsumer); |
| MutexLocker locker(m_audioConsumersLock); |
| HeapHashSet<Member<AudioDestinationConsumer>>::iterator it = |
| m_audioConsumers.find(consumer); |
| if (it == m_audioConsumers.end()) |
| return false; |
| m_audioConsumers.erase(it); |
| return true; |
| } |
| |
| void MediaStreamSource::getSettings(WebMediaStreamTrack::Settings& settings) { |
| settings.deviceId = id(); |
| } |
| |
| void MediaStreamSource::setAudioFormat(size_t numberOfChannels, |
| float sampleRate) { |
| ASSERT(m_requiresConsumer); |
| MutexLocker locker(m_audioConsumersLock); |
| for (HeapHashSet<Member<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 (HeapHashSet<Member<AudioDestinationConsumer>>::iterator it = |
| m_audioConsumers.begin(); |
| it != m_audioConsumers.end(); ++it) |
| (*it)->consumeAudio(bus, numberOfFrames); |
| } |
| |
| DEFINE_TRACE(MediaStreamSource) { |
| visitor->trace(m_observers); |
| visitor->trace(m_audioConsumers); |
| } |
| |
| } // namespace blink |