diff options
author | VaL Doroshchuk <valentyn.doroshchuk@qt.io> | 2018-06-26 16:18:35 +0200 |
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committer | VaL Doroshchuk <valentyn.doroshchuk@qt.io> | 2018-08-30 10:13:35 +0000 |
commit | 35ace9e289dcaada5e0828a59ca7dfee78a6342c (patch) | |
tree | 3132cb84abb0df2f347e47edb2b196ec0727d218 /src/gsttools/qgstreamervideooverlay.cpp | |
parent | 11b90699d2f355f6223a21a9e8491963903cb635 (diff) |
Gstreamer: Introduce custom pipeline
Added an ability to define custom pipeline.
Since new pipeline is used, playbin features will not work.
Registered "qtvideosink" gstreamer element to be used in pipelines.
In case if there is a need to render to QML VideoOutput element.
I.e. if a pipeline is "videotestsrc ! qtvideosink" then QGstVideoRendererSink
will be used as a sink and rendering will be done by one of QSGVideoNode's.
In this case there is a need to create a pipeline after video surface is ready.
Also added an ability to override default video sink and define custom one instead.
QGstreamerVideoRendererInterface::setVideoSink() provides functionality to override default one.
QGstreamerPlayerSession::rendererChanged() can be used to check if the renderer is ready
to create a pipeline or set custom video sink.
Task-number: QTBUG-39327
Change-Id: I635d3a07fb9a5dcf30ee63284a849b0ad3438536
Reviewed-by: VaL Doroshchuk <valentyn.doroshchuk@qt.io>
Diffstat (limited to 'src/gsttools/qgstreamervideooverlay.cpp')
-rw-r--r-- | src/gsttools/qgstreamervideooverlay.cpp | 47 |
1 files changed, 29 insertions, 18 deletions
diff --git a/src/gsttools/qgstreamervideooverlay.cpp b/src/gsttools/qgstreamervideooverlay.cpp index de4f255d5..1f3e28549 100644 --- a/src/gsttools/qgstreamervideooverlay.cpp +++ b/src/gsttools/qgstreamervideooverlay.cpp @@ -379,27 +379,13 @@ QGstreamerVideoOverlay::QGstreamerVideoOverlay(QObject *parent, const QByteArray : QObject(parent) , QGstreamerBufferProbe(QGstreamerBufferProbe::ProbeCaps) { + GstElement *sink = nullptr; if (!elementName.isEmpty()) - m_videoSink = gst_element_factory_make(elementName.constData(), NULL); + sink = gst_element_factory_make(elementName.constData(), NULL); else - m_videoSink = findBestVideoSink(); + sink = findBestVideoSink(); - if (m_videoSink) { - qt_gst_object_ref_sink(GST_OBJECT(m_videoSink)); //Take ownership - - GstPad *pad = gst_element_get_static_pad(m_videoSink, "sink"); - addProbeToPad(pad); - gst_object_unref(GST_OBJECT(pad)); - - QString sinkName(QLatin1String(GST_OBJECT_NAME(m_videoSink))); - bool isVaapi = sinkName.startsWith(QLatin1String("vaapisink")); - m_sinkProperties = isVaapi ? new QVaapiSinkProperties(m_videoSink) : new QXVImageSinkProperties(m_videoSink); - - if (m_sinkProperties->hasShowPrerollFrame()) { - g_signal_connect(m_videoSink, "notify::show-preroll-frame", - G_CALLBACK(showPrerollFrameChanged), this); - } - } + setVideoSink(sink); } QGstreamerVideoOverlay::~QGstreamerVideoOverlay() @@ -418,6 +404,31 @@ GstElement *QGstreamerVideoOverlay::videoSink() const return m_videoSink; } +void QGstreamerVideoOverlay::setVideoSink(GstElement *sink) +{ + if (!sink) + return; + + if (m_videoSink) + gst_object_unref(GST_OBJECT(m_videoSink)); + + m_videoSink = sink; + qt_gst_object_ref_sink(GST_OBJECT(m_videoSink)); + + GstPad *pad = gst_element_get_static_pad(m_videoSink, "sink"); + addProbeToPad(pad); + gst_object_unref(GST_OBJECT(pad)); + + QString sinkName(QLatin1String(GST_OBJECT_NAME(sink))); + bool isVaapi = sinkName.startsWith(QLatin1String("vaapisink")); + delete m_sinkProperties; + m_sinkProperties = isVaapi ? new QVaapiSinkProperties(sink) : new QXVImageSinkProperties(sink); + + if (m_sinkProperties->hasShowPrerollFrame()) + g_signal_connect(m_videoSink, "notify::show-preroll-frame", + G_CALLBACK(showPrerollFrameChanged), this); +} + QSize QGstreamerVideoOverlay::nativeVideoSize() const { return m_nativeVideoSize; |