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/*
* Copyright (C) 2017-2019 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.
* 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 "RealtimeIncomingVideoSource.h"
#if USE(LIBWEBRTC)
namespace WebCore {
RealtimeIncomingVideoSource::RealtimeIncomingVideoSource(rtc::scoped_refptr<webrtc::VideoTrackInterface>&& videoTrack, String&& videoTrackId)
: RealtimeMediaSource(Type::Video, "remote video"_s, WTFMove(videoTrackId))
, m_videoTrack(WTFMove(videoTrack))
{
ASSERT(m_videoTrack);
RealtimeMediaSourceSupportedConstraints constraints;
constraints.setSupportsWidth(true);
constraints.setSupportsHeight(true);
m_currentSettings = RealtimeMediaSourceSettings { };
m_currentSettings->setSupportedConstraints(WTFMove(constraints));
m_videoTrack->RegisterObserver(this);
}
RealtimeIncomingVideoSource::~RealtimeIncomingVideoSource()
{
stop();
m_videoTrack->UnregisterObserver(this);
}
void RealtimeIncomingVideoSource::startProducingData()
{
m_videoTrack->AddOrUpdateSink(this, rtc::VideoSinkWants());
}
void RealtimeIncomingVideoSource::stopProducingData()
{
m_videoTrack->RemoveSink(this);
}
void RealtimeIncomingVideoSource::OnChanged()
{
callOnMainThread([protectedThis = Ref { *this }] {
if (protectedThis->m_videoTrack->state() == webrtc::MediaStreamTrackInterface::kEnded)
protectedThis->end();
});
}
const RealtimeMediaSourceCapabilities& RealtimeIncomingVideoSource::capabilities()
{
return RealtimeMediaSourceCapabilities::emptyCapabilities();
}
const RealtimeMediaSourceSettings& RealtimeIncomingVideoSource::settings()
{
if (m_currentSettings)
return m_currentSettings.value();
RealtimeMediaSourceSupportedConstraints constraints;
constraints.setSupportsWidth(true);
constraints.setSupportsHeight(true);
RealtimeMediaSourceSettings settings;
auto& size = this->size();
settings.setWidth(size.width());
settings.setHeight(size.height());
settings.setSupportedConstraints(constraints);
m_currentSettings = WTFMove(settings);
return m_currentSettings.value();
}
void RealtimeIncomingVideoSource::settingsDidChange(OptionSet<RealtimeMediaSourceSettings::Flag> settings)
{
if (settings.containsAny({ RealtimeMediaSourceSettings::Flag::Width, RealtimeMediaSourceSettings::Flag::Height }))
m_currentSettings = std::nullopt;
}
VideoFrameTimeMetadata RealtimeIncomingVideoSource::metadataFromVideoFrame(const webrtc::VideoFrame& frame)
{
VideoFrameTimeMetadata metadata;
if (frame.ntp_time_ms() > 0)
metadata.captureTime = Seconds::fromMilliseconds(frame.ntp_time_ms());
if (isInBounds<uint32_t>(frame.timestamp()))
metadata.rtpTimestamp = frame.timestamp();
auto lastPacketTimestamp = std::max_element(frame.packet_infos().cbegin(), frame.packet_infos().cend(), [](const auto& a, const auto& b) {
return a.receive_time() < b.receive_time();
});
metadata.receiveTime = Seconds::fromMicroseconds(lastPacketTimestamp->receive_time().us());
if (frame.processing_time())
metadata.processingDuration = Seconds::fromMilliseconds(frame.processing_time()->Elapsed().ms()).value();
return metadata;
}
} // namespace WebCore
#endif // USE(LIBWEBRTC)
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