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/*
* Copyright (C) 2025 Igalia S.L.
*
* 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"
#include "PipeWireCaptureDeviceManager.h"
#if ENABLE(MEDIA_STREAM) && USE(GSTREAMER)
#include "GStreamerCaptureDeviceManager.h"
#include "GStreamerVideoCaptureSource.h"
#include "MockRealtimeMediaSourceCenter.h"
#include <wtf/Scope.h>
namespace WebCore {
GST_DEBUG_CATEGORY(webkit_pipewire_capture_device_manager_debug);
#define GST_CAT_DEFAULT webkit_pipewire_capture_device_manager_debug
RefPtr<PipeWireCaptureDeviceManager> PipeWireCaptureDeviceManager::create(OptionSet<CaptureDevice::DeviceType> deviceTypes)
{
return adoptRef(*new PipeWireCaptureDeviceManager(deviceTypes));
}
PipeWireCaptureDeviceManager::PipeWireCaptureDeviceManager(OptionSet<CaptureDevice::DeviceType> deviceTypes)
: m_deviceTypes(deviceTypes)
, m_pipewireDeviceProvider(adoptGRef(gst_device_provider_factory_get_by_name("pipewiredeviceprovider")))
{
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
GST_DEBUG_CATEGORY_INIT(webkit_pipewire_capture_device_manager_debug, "webkitpipewirecapturedevicemanager", 0, "WebKit PipeWire Capture Device Manager");
});
}
void PipeWireCaptureDeviceManager::computeCaptureDevices(CompletionHandler<void()>&& callback)
{
if (MockRealtimeMediaSourceCenter::mockRealtimeMediaSourceCenterEnabled()) {
callback();
return;
}
#if PLATFORM(WPE)
callback();
return;
#endif
if (!m_pipewireDeviceProvider || !gstObjectHasProperty(GST_OBJECT_CAST(m_pipewireDeviceProvider.get()), "fd"_s)) {
GST_WARNING("PipeWire Device Provider is missing or too old. Please install PipeWire >= 0.3.64.");
callback();
return;
}
auto portal = DesktopPortalCamera::create();
GST_DEBUG("Checking with Camera portal");
if (!portal || !portal->isCameraPresent()) {
GST_DEBUG("Portal not present or has no camera");
callback();
return;
}
GST_DEBUG("Attempting to access the camera");
portal->accessCamera([this, callback = WTFMove(callback)](auto fd) mutable {
if (!fd) {
GST_DEBUG("Camera access unavailable");
callback();
return;
}
GST_DEBUG("FD from portal: %d", *fd);
g_object_set(m_pipewireDeviceProvider.get(), "fd", *fd, nullptr);
gst_device_provider_start(m_pipewireDeviceProvider.get());
GList* devices = gst_device_provider_get_devices(m_pipewireDeviceProvider.get());
GST_DEBUG("Provisioning VideoCaptureDeviceManager with %u device(s).", g_list_length(devices));
auto& manager = GStreamerVideoCaptureDeviceManager::singleton();
while (devices) {
manager.addDevice(adoptGRef(GST_DEVICE_CAST(devices->data)));
devices = g_list_delete_link(devices, devices);
}
gst_device_provider_stop(m_pipewireDeviceProvider.get());
callback();
});
}
CaptureSourceOrError PipeWireCaptureDeviceManager::createCaptureSource(const CaptureDevice& device, MediaDeviceHashSalts&& hashSalts, const MediaConstraints* constraints)
{
GST_DEBUG("Creating capture source for device %s", device.persistentId().ascii().data());
if (MockRealtimeMediaSourceCenter::mockRealtimeMediaSourceCenterEnabled())
return GStreamerVideoCaptureSource::create(String { device.persistentId() }, WTFMove(hashSalts), constraints);
// We don't support audio capture yet.
if (!m_deviceTypes.contains(CaptureDevice::DeviceType::Camera))
return CaptureSourceOrError({ { }, MediaAccessDenialReason::PermissionDenied });
return GStreamerVideoCaptureSource::create(String { device.persistentId() }, WTFMove(hashSalts), constraints);
}
#undef GST_CAT_DEFAULT
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM) && USE(GSTREAMER)
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