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/*
* Copyright (C) 2018 Metrological Group B.V.
* Copyright (C) 2020 Igalia S.L.
* Author: Thibault Saunier <tsaunier@igalia.com>
* Author: Alejandro G. Castro <alex@igalia.com>
* Copyright (C) 2021 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* aint with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#if ENABLE(MEDIA_STREAM) && USE(GSTREAMER)
#include "MockRealtimeVideoSourceGStreamer.h"
#include "GStreamerCaptureDeviceManager.h"
#include "MockRealtimeMediaSourceCenter.h"
#include "PixelBuffer.h"
#include "VideoFrameGStreamer.h"
#include <gst/app/gstappsrc.h>
namespace WebCore {
CaptureSourceOrError MockRealtimeVideoSource::create(String&& deviceID, AtomString&& name, MediaDeviceHashSalts&& hashSalts, const MediaConstraints* constraints, std::optional<PageIdentifier> pageIdentifier)
{
#ifndef NDEBUG
auto device = MockRealtimeMediaSourceCenter::mockDeviceWithPersistentID(deviceID);
ASSERT(device);
if (!device)
return CaptureSourceOrError({ "No mock camera device"_s , MediaAccessDenialReason::PermissionDenied });
#endif
Ref<RealtimeMediaSource> source = adoptRef(*new MockRealtimeVideoSourceGStreamer(WTFMove(deviceID), WTFMove(name), WTFMove(hashSalts), pageIdentifier));
if (constraints) {
if (auto error = source->applyConstraints(*constraints))
return CaptureSourceOrError(CaptureSourceError { error->invalidConstraint });
}
return source;
}
MockRealtimeVideoSourceGStreamer::MockRealtimeVideoSourceGStreamer(String&& deviceID, AtomString&& name, MediaDeviceHashSalts&& hashSalts, std::optional<PageIdentifier> pageIdentifier)
: MockRealtimeVideoSource(WTFMove(deviceID), WTFMove(name), WTFMove(hashSalts), pageIdentifier)
{
ensureGStreamerInitialized();
auto& singleton = GStreamerVideoCaptureDeviceManager::singleton();
auto device = singleton.gstreamerDeviceWithUID(this->captureDevice().persistentId());
ASSERT(device);
if (!device)
return;
device->setIsMockDevice(true);
m_capturer = adoptRef(*new GStreamerVideoCapturer(WTFMove(*device)));
m_capturer->addObserver(*this);
m_capturer->setupPipeline();
m_capturer->setSinkVideoFrameCallback([this](auto&& videoFrame) {
if (!isProducingData() || muted())
return;
dispatchVideoFrameToObservers(WTFMove(videoFrame), { });
});
singleton.registerCapturer(m_capturer);
}
MockRealtimeVideoSourceGStreamer::~MockRealtimeVideoSourceGStreamer()
{
m_capturer->stop();
m_capturer->removeObserver(*this);
auto& singleton = GStreamerVideoCaptureDeviceManager::singleton();
singleton.unregisterCapturer(*m_capturer);
}
void MockRealtimeVideoSourceGStreamer::startProducingData()
{
if (deviceType() == CaptureDevice::DeviceType::Camera)
m_capturer->setSize(size());
m_capturer->setFrameRate(frameRate());
m_capturer->start();
MockRealtimeVideoSource::startProducingData();
}
void MockRealtimeVideoSourceGStreamer::stopProducingData()
{
m_capturer->stop();
MockRealtimeVideoSource::stopProducingData();
}
void MockRealtimeVideoSourceGStreamer::captureEnded()
{
// NOTE: We could call captureFailed() like in the mock audio source, but that would trigger new
// test failures. For some reason we want 'ended' MediaStreamTrack notifications only for audio
// devices removal.
}
std::pair<GstClockTime, GstClockTime> MockRealtimeVideoSourceGStreamer::queryCaptureLatency() const
{
if (!m_capturer)
return { GST_CLOCK_TIME_NONE, GST_CLOCK_TIME_NONE };
return m_capturer->queryLatency();
}
void MockRealtimeVideoSourceGStreamer::updateSampleBuffer()
{
RefPtr imageBuffer = this->imageBufferInternal();
if (!imageBuffer)
return;
auto pixelBuffer = imageBuffer->getPixelBuffer({ AlphaPremultiplication::Unpremultiplied, PixelFormat::BGRA8, DestinationColorSpace::SRGB() }, { { }, imageBuffer->truncatedLogicalSize() });
if (!pixelBuffer)
return;
VideoFrameTimeMetadata metadata;
metadata.captureTime = MonotonicTime::now().secondsSinceEpoch();
auto presentationTime = MediaTime::createWithDouble((elapsedTime()).seconds());
auto videoFrame = VideoFrameGStreamer::createFromPixelBuffer(pixelBuffer.releaseNonNull(), videoFrameRotation(), presentationTime, m_capturer->size(), frameRate(), false, WTFMove(metadata));
if (!videoFrame)
return;
// Mock GstDevice is an appsrc, see webkitMockDeviceCreateElement().
ASSERT(GST_IS_APP_SRC(m_capturer->source()));
gst_app_src_push_sample(GST_APP_SRC_CAST(m_capturer->source()), videoFrame->sample());
}
void MockRealtimeVideoSourceGStreamer::setSizeFrameRateAndZoom(const VideoPresetConstraints& constraints)
{
MockRealtimeVideoSource::setSizeFrameRateAndZoom(constraints);
if (!constraints.width || !constraints.height)
return;
m_capturer->setSize({ *constraints.width, *constraints.height });
}
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM) && USE(GSTREAMER)
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