if (gst_element_query_duration (pipeline, GST_FORMAT_TIME, &totalDuration)) { slider->setRange(0, totalDuration/GST_SECOND); } } if (gst_element_query_position (pipeline, GST_FORMAT_TIME, ¤t)) { g_print("%ld / %ld\n", current/GST_SECOND, totalDuration/GST_SECOND); slider->s...
GstElement *pipeline = (GstElement *) dc->priv->pipeline; GstFormat format = GST_FORMAT_TIME; gint64 dur; GST_DEBUG ("Attempting to query duration");if(gst_element_query_duration (pipeline, &format, &dur)) {if(format == GST_FORMAT_TIME) { GST_DEBUG ("Got duration %"GST_TIME_FORM...
示例1 def_init_pipeline(self):"""Initialize the GStreamer playback pipeline."""self._playbin=Gst.ElementFactory.make("playbin",None)ifgaupol.conf.video_player.volumeisnotNone:self.volume=gaupol.conf.video_player.volume sink=Gst.ElementFactory.make("autovideosink",None)bin=Gst.Bin()bin.add(...
通过gst-launch验证的字符串Pipeline可以直接使用gst_parse_launch()接口将其转化为GstPipeline对象,节省了我们单独调用API去创建Element的时间。 当我们用字符串描述Pipeline时,每个Element之间需要通过叹号 “!" 分隔Element,这样gst-launch才能正确识别。 在使用gst-launch时,根据不同的应用场景,我们可以分为以下的类型。
GST_MESSAGE_ELEMENT = (1 << 15), GST_MESSAGE_SEGMENT_START = (1 << 16), GST_MESSAGE_SEGMENT_DONE = (1 << 17), GST_MESSAGE_DURATION = (1 << 18), GST_MESSAGE_LATENCY = (1 << 19), GST_MESSAGE_ASYNC_START = (1 << 20), GST_MESSAGE_ASYNC_DONE = (1 << 21), GST_MESSA...
When there is change in frame duration between the RTP jitter buffer and the nvstreammux, this property can be used to indicate the correct frame rate to the nvstreammux, for e.g. when there is an audiobuffersplit GstElement before nvstreammux in the pipeline. If set to -1 (GST_...
Got context from element 'projectm0': gst.gl.GLDisplay=context, gst.gl.GLDisplay=(GstGLDisplay)"\(GstGLDisplayCocoa\)\ gldisplaycocoa0"; ** (gst-launch-1.0:29313): ERROR **: 08:22:41.492: OpenGL Error: GL_INVALID_ENUM - Enumeration parameter is not legal...
// gst element registry. After this call the element can be used like any other gstreamer element func Register() bool { return gst.RegisterElement( // no plugin: nil, // The name of the element "gocustomtransform", // The rank of the element gst.RankNone, // The GoElement implement...
allocation query driven zero-copy can work through this wormhole. There are scheduling considerations as well: proxysink forwards everything into the proxysrc pipeline directly from the proxysink streaming thread. There is a queue element inside proxysrc to decouple the source thread from the...
- improve gst-print command to show more pad and element information Tools gst-launch-1.0 - now prints the pipeline position and duration if available when the pipeline is advancing. This is hopefully more user-friendly and gives visual feedback on the terminal that the pipeline is ac...