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/*
* Copyright (C) 2023 Metrological Group B.V.
* Author: Philippe Normand <philn@igalia.com>
*
* 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 "GStreamerMockDeviceProvider.h"
#if ENABLE(MEDIA_STREAM) && USE(GSTREAMER)
#include "ContextDestructionObserverInlines.h"
#include "GStreamerMockDevice.h"
#include "GUniquePtrGStreamer.h"
#include "MockRealtimeMediaSourceCenter.h"
#include <wtf/glib/WTFGType.h>
using namespace WebCore;
struct _GStreamerMockDeviceProviderPrivate {
};
GST_DEBUG_CATEGORY_STATIC(webkitGstMockDeviceProviderDebug);
#define GST_CAT_DEFAULT webkitGstMockDeviceProviderDebug
WEBKIT_DEFINE_TYPE_WITH_CODE(GStreamerMockDeviceProvider, webkit_mock_device_provider, GST_TYPE_DEVICE_PROVIDER, GST_DEBUG_CATEGORY_INIT(webkitGstMockDeviceProviderDebug, "webkitmockdeviceprovider", 0, "Mock Device Provider"))
static GList* webkitMockDeviceProviderProbe(GstDeviceProvider* provider)
{
if (!MockRealtimeMediaSourceCenter::mockRealtimeMediaSourceCenterEnabled()) {
GST_INFO_OBJECT(provider, "Mock capture sources are disabled, returning empty device list");
return nullptr;
}
GST_INFO_OBJECT(provider, "Probing");
GList* devices = nullptr;
auto& sourceCenter = MockRealtimeMediaSourceCenter::singleton();
for (auto& device : sourceCenter.videoDevices())
devices = g_list_prepend(devices, webkitMockDeviceCreate(device));
for (auto& device : sourceCenter.microphoneDevices())
devices = g_list_prepend(devices, webkitMockDeviceCreate(device));
for (auto& device : sourceCenter.displayDevices())
devices = g_list_prepend(devices, webkitMockDeviceCreate(device));
devices = g_list_reverse(devices);
return devices;
}
static GStreamerMockDeviceProvider* s_provider = nullptr;
GStreamerMockDeviceProvider* webkitGstMockDeviceProviderSingleton()
{
return s_provider;
}
void webkitGstMockDeviceProviderSwitchDefaultDevice(const CaptureDevice& oldDevice, const CaptureDevice& newDevice)
{
if (!s_provider) {
GST_ERROR("Mock device provider not found");
return;
}
GRefPtr<GstDevice> oldGstDevice, newGstDevice;
GList* devices = gst_device_provider_get_devices(GST_DEVICE_PROVIDER_CAST(s_provider));
for (GList* it = devices; it; it = it->next) {
auto device = GST_DEVICE_CAST(it->data);
GUniquePtr<GstStructure> properties(gst_device_get_properties(device));
auto persistentId = gstStructureGetString(properties.get(), "persistent-id"_s);
if (persistentId == oldDevice.persistentId())
oldGstDevice = device;
else if (persistentId == newDevice.persistentId())
newGstDevice = device;
if (oldGstDevice && newGstDevice)
break;
}
g_list_free_full(devices, gst_object_unref);
if (!oldGstDevice) {
GST_ERROR_OBJECT(s_provider, "Unable to find GStreamer mock device corresponding to old capture device with ID %s", oldDevice.persistentId().utf8().data());
return;
}
CaptureDevice previousDefaultDevice = oldDevice;
previousDefaultDevice.setIsDefault(false);
auto previousDefaultGstDevice = adoptGRef(webkitMockDeviceCreate(previousDefaultDevice));
gst_device_provider_device_changed(GST_DEVICE_PROVIDER_CAST(s_provider), previousDefaultGstDevice.get(), oldGstDevice.get());
if (!newGstDevice) {
GST_ERROR_OBJECT(s_provider, "Unable to find GStreamer mock device corresponding to new capture device with ID %s", oldDevice.persistentId().utf8().data());
return;
}
CaptureDevice nextDefaultDevice = newDevice;
nextDefaultDevice.setIsDefault(true);
auto nextDefaultGstDevice = adoptGRef(webkitMockDeviceCreate(nextDefaultDevice));
GST_DEBUG_OBJECT(s_provider, "Emitting device-changed notification");
gst_device_provider_device_changed(GST_DEVICE_PROVIDER_CAST(s_provider), nextDefaultGstDevice.get(), newGstDevice.get());
}
static void webkitMockDeviceProviderConstructed(GObject* object)
{
G_OBJECT_CLASS(webkit_mock_device_provider_parent_class)->constructed(object);
s_provider = WEBKIT_MOCK_DEVICE_PROVIDER(object);
}
static void webkitMockDeviceProviderFinalize(GObject* object)
{
s_provider = nullptr;
G_OBJECT_CLASS(webkit_mock_device_provider_parent_class)->finalize(object);
}
static void webkit_mock_device_provider_class_init(GStreamerMockDeviceProviderClass* klass)
{
auto gobjectClass = G_OBJECT_CLASS(klass);
gobjectClass->constructed = webkitMockDeviceProviderConstructed;
gobjectClass->finalize = webkitMockDeviceProviderFinalize;
auto providerClass = GST_DEVICE_PROVIDER_CLASS(klass);
providerClass->probe = GST_DEBUG_FUNCPTR(webkitMockDeviceProviderProbe);
gst_device_provider_class_set_static_metadata(providerClass, "WebKit Mock Device Provider", "Source/Audio/Video",
"List and provide WebKit mock source devices", "Philippe Normand <philn@igalia.com>");
}
#undef GST_CAT_DEFAULT
#endif // ENABLE(MEDIA_STREAM) && USE(GSTREAMER)
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