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Add QT_GSTREAMER_CAMERABIN_VIDEOSRC environment variable.

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It can be used to set which video source element should be used by
the camerabin.

Change-Id: I8d1cd8c4ba6fe5a89817699f645b0997e713aaca
Reviewed-by: Samuli Piippo <samuli.piippo@digia.com>
Reviewed-by: Christian Stromme <christian.stromme@digia.com>
This commit is contained in:
Yoann Lopes
2014-10-17 16:51:23 +02:00
parent f51ca0b97c
commit deb13f102a
3 changed files with 56 additions and 7 deletions
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36
src/plugins/gstreamer/camerabin/camerabinsession.cpp
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@@ -412,9 +412,41 @@ GstElement *CameraBinSession::buildCameraSource()
if (g_object_class_find_property(G_OBJECT_GET_CLASS(m_videoSrc), "video-source")) {
GstElement *src = 0;
if (m_videoInputFactory)
/* QT_GSTREAMER_CAMERABIN_VIDEOSRC can be used to set the video source element.
--- Usage
QT_GSTREAMER_CAMERABIN_VIDEOSRC=[drivername=elementname[,drivername2=elementname2 ...],][elementname]
--- Examples
Always use 'somevideosrc':
QT_GSTREAMER_CAMERABIN_VIDEOSRC="somevideosrc"
Use 'somevideosrc' when the device driver is 'somedriver', otherwise use default:
QT_GSTREAMER_CAMERABIN_VIDEOSRC="somedriver=somevideosrc"
Use 'somevideosrc' when the device driver is 'somedriver', otherwise use 'somevideosrc2'
QT_GSTREAMER_CAMERABIN_VIDEOSRC="somedriver=somevideosrc,somevideosrc2"
*/
const QByteArray envVideoSource = qgetenv("QT_GSTREAMER_CAMERABIN_VIDEOSRC");
if (!envVideoSource.isEmpty()) {
QList<QByteArray> sources = envVideoSource.split(',');
foreach (const QByteArray &source, sources) {
QList<QByteArray> keyValue = source.split('=');
if (keyValue.count() == 1) {
src = gst_element_factory_make(keyValue.at(0), "camera_source");
break;
} else if (keyValue.at(0) == QGstUtils::cameraDriver(m_inputDevice, m_sourceFactory)) {
src = gst_element_factory_make(keyValue.at(1), "camera_source");
break;
}
}
} else if (m_videoInputFactory) {
src = m_videoInputFactory->buildElement();
else
}
if (!src)
src = gst_element_factory_make("v4l2src", "camera_source");
if (src) {