| /* |
| * 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. |
| * |
| * 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 "MediaStreamTrackPrivate.h" |
| |
| #include "MediaSourceStates.h" |
| #include "MediaStreamCapabilities.h" |
| #include "NotImplemented.h" |
| #include "UUID.h" |
| #include <wtf/NeverDestroyed.h> |
| |
| namespace WebCore { |
| |
| PassRefPtr<MediaStreamTrackPrivate> MediaStreamTrackPrivate::create(PassRefPtr<MediaStreamSource> source) |
| { |
| return adoptRef(new MediaStreamTrackPrivate(source)); |
| } |
| |
| MediaStreamTrackPrivate::MediaStreamTrackPrivate(const MediaStreamTrackPrivate& other) |
| : RefCounted() |
| , m_client(nullptr) |
| { |
| m_ignoreMutations = true; |
| m_id = createCanonicalUUIDString(); |
| setSource(other.source()); |
| m_readyState = other.readyState(); |
| m_muted = other.muted(); |
| m_enabled = other.enabled(); |
| m_stopped = other.stopped(); |
| m_ignoreMutations = false; |
| } |
| |
| MediaStreamTrackPrivate::MediaStreamTrackPrivate(PassRefPtr<MediaStreamSource> source) |
| : m_source(nullptr) |
| , m_client(nullptr) |
| , m_readyState(MediaStreamSource::New) |
| , m_muted(false) |
| , m_enabled(true) |
| , m_stopped(false) |
| { |
| m_ignoreMutations = true; |
| setSource(source); |
| m_ignoreMutations = false; |
| } |
| |
| MediaStreamTrackPrivate::~MediaStreamTrackPrivate() |
| { |
| if (m_source) |
| m_source->removeObserver(this); |
| } |
| |
| void MediaStreamTrackPrivate::setSource(PassRefPtr<MediaStreamSource> source) |
| { |
| if (m_source) |
| m_source->removeObserver(this); |
| |
| m_source = source; |
| |
| if (!m_source) |
| return; |
| |
| setMuted(m_source->muted()); |
| setReadyState(m_source->readyState()); |
| if (m_source) |
| m_source->addObserver(this); |
| } |
| |
| const String& MediaStreamTrackPrivate::id() const |
| { |
| if (!m_id.isEmpty()) |
| return m_id; |
| |
| // The spec says: |
| // Unless a MediaStreamTrack object is created as a part a of special purpose algorithm that |
| // specifies how the track id must be initialized, the user agent must generate a globally |
| // unique identifier string and initialize the object's id attribute to that string. |
| if (m_source && m_source->useIDForTrackID()) |
| return m_source->id(); |
| |
| m_id = createCanonicalUUIDString(); |
| return m_id; |
| } |
| |
| const String& MediaStreamTrackPrivate::label() const |
| { |
| if (m_source) |
| return m_source->name(); |
| |
| return emptyString(); |
| } |
| |
| bool MediaStreamTrackPrivate::ended() const |
| { |
| return m_stopped || (m_source && m_source->readyState() == MediaStreamSource::Ended); |
| } |
| |
| bool MediaStreamTrackPrivate::muted() const |
| { |
| if (m_stopped || !m_source) |
| return false; |
| |
| return m_source->muted(); |
| } |
| |
| void MediaStreamTrackPrivate::setMuted(bool muted) |
| { |
| if (m_muted == muted) |
| return; |
| |
| m_muted = muted; |
| |
| if (!m_client || m_ignoreMutations) |
| return; |
| |
| m_client->trackMutedChanged(); |
| } |
| |
| bool MediaStreamTrackPrivate::readonly() const |
| { |
| if (m_stopped || !m_source) |
| return true; |
| |
| return m_source->readonly(); |
| } |
| |
| bool MediaStreamTrackPrivate::remote() const |
| { |
| if (!m_source) |
| return false; |
| |
| return m_source->remote(); |
| } |
| |
| void MediaStreamTrackPrivate::setEnabled(bool enabled) |
| { |
| if (m_stopped || m_enabled == enabled) |
| return; |
| |
| // 4.3.3.1 |
| // ... after a MediaStreamTrack is disassociated from its track, its enabled attribute still |
| // changes value when set; it just doesn't do anything with that new value. |
| m_enabled = enabled; |
| |
| if (m_source) |
| m_source->setEnabled(enabled); |
| |
| if (!m_client || m_ignoreMutations) |
| return; |
| |
| m_client->trackEnabledChanged(); |
| } |
| |
| void MediaStreamTrackPrivate::stop(StopBehavior stopSource) |
| { |
| if (m_stopped) |
| return; |
| |
| if (stopSource == StopTrackAndStopSource && m_source) |
| m_source->stop(); |
| |
| setReadyState(MediaStreamSource::Ended); |
| m_stopped = true; |
| } |
| |
| MediaStreamSource::ReadyState MediaStreamTrackPrivate::readyState() const |
| { |
| if (m_stopped) |
| return MediaStreamSource::Ended; |
| |
| return m_readyState; |
| } |
| |
| void MediaStreamTrackPrivate::setReadyState(MediaStreamSource::ReadyState state) |
| { |
| if (m_readyState == MediaStreamSource::Ended || m_readyState == state) |
| return; |
| |
| MediaStreamSource::ReadyState oldState = m_readyState; |
| m_readyState = state; |
| |
| if (!m_client || m_ignoreMutations) |
| return; |
| |
| if ((m_readyState == MediaStreamSource::Live && oldState == MediaStreamSource::New) || m_readyState == MediaStreamSource::Ended) |
| m_client->trackReadyStateChanged(); |
| } |
| |
| RefPtr<MediaStreamTrackPrivate> MediaStreamTrackPrivate::clone() |
| { |
| return adoptRef(new MediaStreamTrackPrivate(*this)); |
| } |
| |
| |
| RefPtr<MediaConstraints> MediaStreamTrackPrivate::constraints() const |
| { |
| return m_constraints; |
| } |
| |
| const MediaStreamSourceStates& MediaStreamTrackPrivate::states() const |
| { |
| if (!m_source) { |
| DEFINE_STATIC_LOCAL(const MediaStreamSourceStates, noState, ()); |
| return noState; |
| } |
| |
| return m_source->states(); |
| } |
| |
| MediaStreamSource::Type MediaStreamTrackPrivate::type() const |
| { |
| if (!m_source) |
| return MediaStreamSource::None; |
| |
| return m_source->type(); |
| } |
| |
| RefPtr<MediaStreamSourceCapabilities> MediaStreamTrackPrivate::capabilities() const |
| { |
| if (!m_source) |
| return 0; |
| |
| return m_source->capabilities(); |
| } |
| |
| void MediaStreamTrackPrivate::applyConstraints(PassRefPtr<MediaConstraints>) |
| { |
| // FIXME: apply the new constraints to the track |
| // https://bugs.webkit.org/show_bug.cgi?id=122428 |
| } |
| |
| void MediaStreamTrackPrivate::sourceReadyStateChanged() |
| { |
| if (stopped()) |
| return; |
| |
| setReadyState(m_source->readyState()); |
| } |
| |
| void MediaStreamTrackPrivate::sourceMutedChanged() |
| { |
| if (stopped()) |
| return; |
| |
| setMuted(m_source->muted()); |
| } |
| |
| void MediaStreamTrackPrivate::sourceEnabledChanged() |
| { |
| if (stopped()) |
| return; |
| |
| setEnabled(m_source->enabled()); |
| } |
| |
| bool MediaStreamTrackPrivate::observerIsEnabled() |
| { |
| return enabled(); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(MEDIA_STREAM) |