| /* |
| * Copyright (C) 2017-2020 Apple 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "AudioTrackPrivateMediaStream.h" |
| |
| #if ENABLE(VIDEO_TRACK) && ENABLE(MEDIA_STREAM) |
| |
| #include "AudioMediaStreamTrackRenderer.h" |
| #include "Logging.h" |
| |
| namespace WebCore { |
| |
| AudioTrackPrivateMediaStream::AudioTrackPrivateMediaStream(MediaStreamTrackPrivate& track) |
| : m_streamTrack(track) |
| , m_id(track.id()) |
| , m_label(track.label()) |
| , m_timelineOffset(MediaTime::invalidTime()) |
| , m_renderer { AudioMediaStreamTrackRenderer::create() } |
| { |
| track.addObserver(*this); |
| } |
| |
| AudioTrackPrivateMediaStream::~AudioTrackPrivateMediaStream() |
| { |
| clear(); |
| } |
| |
| #if !RELEASE_LOG_DISABLED |
| void AudioTrackPrivateMediaStream::setLogger(const Logger& logger, const void* identifier) |
| { |
| TrackPrivateBase::setLogger(logger, identifier); |
| m_renderer->setLogger(logger, identifier); |
| } |
| #endif |
| |
| void AudioTrackPrivateMediaStream::clear() |
| { |
| if (m_isCleared) |
| return; |
| |
| m_isCleared = true; |
| streamTrack().removeObserver(*this); |
| |
| m_renderer->clear(); |
| } |
| |
| void AudioTrackPrivateMediaStream::playInternal() |
| { |
| ASSERT(isMainThread()); |
| |
| if (m_isPlaying) |
| return; |
| |
| m_isPlaying = true; |
| m_autoPlay = false; |
| |
| m_renderer->setPaused(false); |
| } |
| |
| void AudioTrackPrivateMediaStream::play() |
| { |
| playInternal(); |
| } |
| |
| void AudioTrackPrivateMediaStream::pause() |
| { |
| ASSERT(isMainThread()); |
| |
| if (!m_isPlaying) |
| return; |
| |
| m_isPlaying = false; |
| m_autoPlay = false; |
| |
| m_renderer->setPaused(true); |
| } |
| |
| void AudioTrackPrivateMediaStream::setVolume(float volume) |
| { |
| m_renderer->setVolume(volume); |
| } |
| |
| float AudioTrackPrivateMediaStream::volume() const |
| { |
| return m_renderer->volume(); |
| } |
| |
| // May get called on a background thread. |
| void AudioTrackPrivateMediaStream::audioSamplesAvailable(MediaStreamTrackPrivate&, const MediaTime& sampleTime, const PlatformAudioData& audioData, const AudioStreamDescription& description, size_t sampleCount) |
| { |
| if (!m_isPlaying) { |
| m_renderer->stop(); |
| return; |
| } |
| |
| m_renderer->pushSamples(sampleTime, audioData, description, sampleCount); |
| |
| if (m_autoPlay && !m_hasStartedAutoplay) { |
| m_hasStartedAutoplay = true; |
| callOnMainThread([this, protectedThis = makeRef(*this)] { |
| if (m_autoPlay) |
| playInternal(); |
| }); |
| } |
| } |
| |
| void AudioTrackPrivateMediaStream::trackMutedChanged(MediaStreamTrackPrivate&) |
| { |
| updateRendererMutedState(); |
| } |
| |
| void AudioTrackPrivateMediaStream::trackEnabledChanged(MediaStreamTrackPrivate&) |
| { |
| updateRendererMutedState(); |
| } |
| |
| void AudioTrackPrivateMediaStream::updateRendererMutedState() |
| { |
| m_renderer->setMuted(m_isPlaying && !streamTrack().muted() && !streamTrack().ended() && streamTrack().enabled()); |
| } |
| |
| void AudioTrackPrivateMediaStream::trackEnded(MediaStreamTrackPrivate&) |
| { |
| pause(); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(VIDEO_TRACK) && ENABLE(MEDIA_STREAM) |