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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qgstreamervideodevices_p.h"
#include "qmediadevices.h"
#include "private/qcameradevice_p.h"
#include "qgstreameraudiosource_p.h"
#include "qgstreameraudiosink_p.h"
#include "qgstreameraudiodevice_p.h"
#include "qgstutils_p.h"
QT_BEGIN_NAMESPACE
static gboolean deviceMonitor(GstBus *, GstMessage *message, gpointer m)
{
auto *manager = static_cast<QGstreamerVideoDevices *>(m);
GstDevice *device = nullptr;
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_DEVICE_ADDED:
gst_message_parse_device_added(message, &device);
manager->addDevice(device);
break;
case GST_MESSAGE_DEVICE_REMOVED:
gst_message_parse_device_removed(message, &device);
manager->removeDevice(device);
break;
default:
break;
}
if (device)
gst_object_unref (device);
return G_SOURCE_CONTINUE;
}
QGstreamerVideoDevices::QGstreamerVideoDevices(QPlatformMediaIntegration *integration)
: QPlatformVideoDevices(integration)
{
GstDeviceMonitor *monitor;
GstBus *bus;
monitor = gst_device_monitor_new();
gst_device_monitor_add_filter (monitor, nullptr, nullptr);
bus = gst_device_monitor_get_bus(monitor);
gst_bus_add_watch(bus, deviceMonitor, this);
gst_object_unref(bus);
gst_device_monitor_start(monitor);
auto devices = gst_device_monitor_get_devices(monitor);
while (devices) {
GstDevice *device = static_cast<GstDevice *>(devices->data);
addDevice(device);
gst_object_unref(device);
devices = g_list_delete_link(devices, devices);
}
}
QList<QCameraDevice> QGstreamerVideoDevices::videoDevices() const
{
QList<QCameraDevice> devices;
for (auto device : m_videoSources) {
QCameraDevicePrivate *info = new QCameraDevicePrivate;
auto *desc = gst_device_get_display_name(device.gstDevice);
info->description = QString::fromUtf8(desc);
g_free(desc);
info->id = device.id;
if (QGstStructure properties = gst_device_get_properties(device.gstDevice); !properties.isNull()) {
auto def = properties["is-default"].toBool();
info->isDefault = def && *def;
properties.free();
}
if (info->isDefault)
devices.prepend(info->create());
else
devices.append(info->create());
QGstCaps caps = gst_device_get_caps(device.gstDevice);
if (!caps.isNull()) {
QList<QCameraFormat> formats;
QSet<QSize> photoResolutions;
int size = caps.size();
for (int i = 0; i < size; ++i) {
auto cap = caps.at(i);
QSize resolution = cap.resolution();
if (!resolution.isValid())
continue;
auto pixelFormat = cap.pixelFormat();
auto frameRate = cap.frameRateRange();
auto *f = new QCameraFormatPrivate{
QSharedData(),
pixelFormat,
resolution,
frameRate.min,
frameRate.max
};
formats << f->create();
photoResolutions.insert(resolution);
}
info->videoFormats = formats;
// ### sort resolutions?
info->photoResolutions = photoResolutions.values();
}
}
return devices;
}
void QGstreamerVideoDevices::addDevice(GstDevice *device)
{
gchar *type = gst_device_get_device_class(device);
gst_object_ref(device);
if (!strcmp(type, "Video/Source") || !strcmp(type, "Source/Video")) {
m_videoSources.push_back({device, QByteArray::number(m_idGenerator)});
videoInputsChanged();
m_idGenerator++;
} else {
gst_object_unref(device);
}
g_free(type);
}
void QGstreamerVideoDevices::removeDevice(GstDevice *device)
{
// qDebug() << "removing device:" << device << gst_device_get_display_name(device);
auto it = std::find_if(m_videoSources.begin(), m_videoSources.end(),
[=](const QGstDevice &a) { return a.gstDevice == device; });
if (it != m_videoSources.end()) {
m_videoSources.erase(it);
videoInputsChanged();
}
gst_object_unref(device);
}
GstDevice *QGstreamerVideoDevices::videoDevice(const QByteArray &id) const
{
auto it = std::find_if(m_videoSources.begin(), m_videoSources.end(),
[=](const QGstDevice &a) { return a.id == id; });
return it != m_videoSources.end() ? it->gstDevice : nullptr;
}
QT_END_NAMESPACE
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