Provide face and orientation info from gstreamer camera backend.

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>

2 files changed, 5 insertions, 86 deletions

diff --git a/src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.cpp b/src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.cpp
index 8b88fbb71..6763c68e2 100644
--- a/src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.cpp
+++ b/src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.cpp
@@ -51,9 +51,6 @@
 #include "qgstreamercaptureservice.h"
 #include <private/qgstutils_p.h>
 
-#include <private/qcore_unix_p.h>
-#include <linux/videodev2.h>
-
 QMediaService* QGstreamerCaptureServicePlugin::create(const QString &key)
 {
     QGstUtils::initializeGst();
@@ -87,40 +84,19 @@ QMediaServiceProviderHint::Features QGstreamerCaptureServicePlugin::supportedFea
 
 QByteArray QGstreamerCaptureServicePlugin::defaultDevice(const QByteArray &service) const
 {
-    if (service == Q_MEDIASERVICE_CAMERA) {
-        if (m_cameraDevices.isEmpty())
-            updateDevices();
-
-        return m_defaultCameraDevice;
-    }
-
-    return QByteArray();
+    return service == Q_MEDIASERVICE_CAMERA
+            ? QGstUtils::enumerateCameras().value(0).name.toUtf8()
+            : QByteArray();
 }
 
 QList<QByteArray> QGstreamerCaptureServicePlugin::devices(const QByteArray &service) const
 {
-    if (service == Q_MEDIASERVICE_CAMERA) {
-        if (m_cameraDevices.isEmpty())
-            updateDevices();
-
-        return m_cameraDevices;
-    }
-
-    return QList<QByteArray>();
+    return service == Q_MEDIASERVICE_CAMERA ? QGstUtils::cameraDevices() : QList<QByteArray>();
 }
 
 QString QGstreamerCaptureServicePlugin::deviceDescription(const QByteArray &service, const QByteArray &device)
 {
-    if (service == Q_MEDIASERVICE_CAMERA) {
-        if (m_cameraDevices.isEmpty())
-            updateDevices();
-
-        for (int i=0; i<m_cameraDevices.count(); i++)
-            if (m_cameraDevices[i] == device)
-                return m_cameraDescriptions[i];
-    }
-
-    return QString();
+    return service == Q_MEDIASERVICE_CAMERA ? QGstUtils::cameraDescription(deviceName) : QString();
 }
 
 QVariant QGstreamerCaptureServicePlugin::deviceProperty(const QByteArray &service, const QByteArray &device, const QByteArray &property)
@@ -131,56 +107,6 @@ QVariant QGstreamerCaptureServicePlugin::deviceProperty(const QByteArray &servic
     return QVariant();
 }
 
-void QGstreamerCaptureServicePlugin::updateDevices() const
-{
-    m_defaultCameraDevice.clear();
-    m_cameraDevices.clear();
-    m_cameraDescriptions.clear();
-
-    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_cameraDevices.append(entryInfo.filePath().toLocal8Bit());
-            m_cameraDescriptions.append(name);
-        }
-        qt_safe_close(fd);
-    }
-
-    if (!m_cameraDevices.isEmpty())
-        m_defaultCameraDevice = m_cameraDevices.first();
-}
 #endif
 
 QMultimedia::SupportEstimate QGstreamerCaptureServicePlugin::hasSupport(const QString &mimeType,
diff --git a/src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.h b/src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.h
index a1141d324..a46be9ebd 100644
--- a/src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.h
+++ b/src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.h
@@ -87,13 +87,6 @@ public:
     QStringList supportedMimeTypes() const;
 
 private:
-#if defined(USE_GSTREAMER_CAMERA)
-    void updateDevices() const;
-
-    mutable QByteArray m_defaultCameraDevice;
-    mutable QList<QByteArray> m_cameraDevices;
-    mutable QStringList m_cameraDescriptions;
-#endif
     void updateSupportedMimeTypes() const;
 
     mutable QSet<QString> m_supportedMimeTypeSet; //for fast access