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Provide face and orientation info from gstreamer camera backend.

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Cleans up duplicate device enumeration code so the devices listed by
the QMediaServiceProviderPlugin are the same as those in the
QVideoInputDeviceControl and includes face and orientation information
if available.

Change-Id: Iaa4c303c973bcf3e0f7c8c2fd7a7de629bccec86
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
This commit is contained in:
Andrew den Exter
2014-07-08 15:56:05 +10:00
committed by Andrew den Exter
parent 074bd6ab37
commit cddbe8736d
15 changed files with 445 additions and 283 deletions
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85
src/gsttools/qgstreamervideoinputdevicecontrol.cpp
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@@ -44,43 +44,40 @@
#include <QtCore/QDir>
#include <QtCore/QDebug>
#include <private/qcore_unix_p.h>
#include <linux/videodev2.h>
#include <private/qgstutils_p.h>
QGstreamerVideoInputDeviceControl::QGstreamerVideoInputDeviceControl(QObject *parent)
:QVideoDeviceSelectorControl(parent), m_source(0), m_selectedDevice(0)
:QVideoDeviceSelectorControl(parent), m_factory(0), m_selectedDevice(0)
{
update();
}
QGstreamerVideoInputDeviceControl::QGstreamerVideoInputDeviceControl(GstElement *source, QObject *parent)
:QVideoDeviceSelectorControl(parent), m_source(source), m_selectedDevice(0)
QGstreamerVideoInputDeviceControl::QGstreamerVideoInputDeviceControl(
GstElementFactory *factory, QObject *parent)
: QVideoDeviceSelectorControl(parent), m_factory(factory), m_selectedDevice(0)
{
if (m_source)
gst_object_ref(GST_OBJECT(m_source));
update();
if (m_factory)
gst_object_ref(GST_OBJECT(m_factory));
}
QGstreamerVideoInputDeviceControl::~QGstreamerVideoInputDeviceControl()
{
if (m_source)
gst_object_unref(GST_OBJECT(m_source));
if (m_factory)
gst_object_unref(GST_OBJECT(m_factory));
}
int QGstreamerVideoInputDeviceControl::deviceCount() const
{
return m_names.size();
return QGstUtils::enumerateCameras(m_factory).count();
}
QString QGstreamerVideoInputDeviceControl::deviceName(int index) const
{
return m_names[index];
return QGstUtils::enumerateCameras(m_factory).value(index).name;
}
QString QGstreamerVideoInputDeviceControl::deviceDescription(int index) const
{
return m_descriptions[index];
return QGstUtils::enumerateCameras(m_factory).value(index).description;
}
int QGstreamerVideoInputDeviceControl::defaultDevice() const
@@ -93,7 +90,6 @@ int QGstreamerVideoInputDeviceControl::selectedDevice() const
return m_selectedDevice;
}
void QGstreamerVideoInputDeviceControl::setSelectedDevice(int index)
{
if (index != m_selectedDevice) {
@@ -102,60 +98,3 @@ void QGstreamerVideoInputDeviceControl::setSelectedDevice(int index)
emit selectedDeviceChanged(deviceName(index));
}
}
void QGstreamerVideoInputDeviceControl::update()
{
m_names.clear();
m_descriptions.clear();
// subdevsrc and the like have a camera-device property that takes an enumeration
// identifying a primary or secondary camera, so return identifiers that map to those
// instead of a list of actual devices.
if (m_source && g_object_class_find_property(G_OBJECT_GET_CLASS(m_source), "camera-device")) {
m_names << QLatin1String("primary") << QLatin1String("secondary");
m_descriptions << tr("Main camera") << tr("Front camera");
return;
}
QDir devDir("/dev");
devDir.setFilter(QDir::System);
QFileInfoList entries = devDir.entryInfoList(QStringList() << "video*");
foreach( const QFileInfo &entryInfo, entries ) {
//qDebug() << "Try" << entryInfo.filePath();
int fd = qt_safe_open(entryInfo.filePath().toLatin1().constData(), O_RDWR );
if (fd == -1)
continue;
bool isCamera = false;
v4l2_input input;
memset(&input, 0, sizeof(input));
for (; ::ioctl(fd, VIDIOC_ENUMINPUT, &input) >= 0; ++input.index) {
if(input.type == V4L2_INPUT_TYPE_CAMERA || input.type == 0) {
isCamera = ::ioctl(fd, VIDIOC_S_INPUT, input.index) != 0;
break;
}
}
if (isCamera) {
// find out its driver "name"
QString name;
struct v4l2_capability vcap;
memset(&vcap, 0, sizeof(struct v4l2_capability));
if (ioctl(fd, VIDIOC_QUERYCAP, &vcap) != 0)
name = entryInfo.fileName();
else
name = QString((const char*)vcap.card);
//qDebug() << "found camera: " << name;
m_names.append(entryInfo.filePath());
m_descriptions.append(name);
}
qt_safe_close(fd);
}
}