回到gst_element_link,第二个和第四个参数为NULL,结合gst_element_link_pads,第二个和第四个参数为padname,因此gst_element_link的行为就是“链接两个element,不在两个element中指定使用哪些pad实例进行互相链接”。 gst_element_link_pads_full 这个函数有点长,我们节选,全文同样在 gstutils.c 定义及注释说明,...
我们可以使用 padtemplate 创建新的pad,也使用 gst_pad_new 直接无模板创建新的 pad 。 使用gst_pad_get_parent来获取pad归属的哪个GstElement,pad 需要依附在 element 内,因此其parent一般情况下都是一个GstElement。 可以使用gst_pad_get_peer获取当前pad 和哪些 pad 建立了 link 关系。 发送event的函数为 gst...
When connecting a source to nvstreammux (the muxer), a new pad must be requested from the muxer using gst_element_get_request_pad() and the pad template sink_%u. For more information, see link_element_to_streammux_sink_pad() in the DeepStream app source code. The muxer forms a ...
方法gst_element_get_known_pad() 可用于请求兼容的 pad ,如下一个示例所示。 它将从任何输入请求来自 Ogg 多路复用器的兼容 pad。 static void link_to_multiplexer (GstPad * tolink_pad, GstElement * mux) { GstPad *pad; gchar *srcname, *sinkname; srcname = gst_pad_get_name (tolink_pad)...
每一个空间将会创建一个默认的权限。创建空间的用户将会自动具有空间管理员（space admin）的权限，这个的意思是你可以为其他用户和用户组赋予空间访问和管理的权限。在
the element that was specified directly in front of or after the link is used. This works across bins. If a padname is given, the link is done with these pads. If no pad names are given all possibilities are tried and a matching pad is used. If multiple padnames are given, both si...
so | rg gl_filter 121: 0000000000000000 0 FUNC GLOBAL DEFAULT UND gst_gl_filter_render_to_target_with_shader * 242: 0000000000000000 0 FUNC GLOBAL DEFAULT UND gst_gl_filter_draw_fullscreen_quad 305: 0000000000000000 0 FUNC GLOBAL DEFAULT UND gst_gl_filter_add_rgba_pad_templates 421: ...
- gst_pad_link_get_name() and gst_state_change_get_name() print pad link return values and state change transition values as strings. - The LATENCY TRACER has seen a few improvements: trace records now contain timestamps which is useful to plot things over time, and downstream sync...
the element that was specified directly in front of or after the link is used. This works across bins. If a padname is given, the link is done with these pads. If no pad names are given all possibilities are tried and a matching pad is used. If multiple padnames are given, both si...
(gst-plugin-scanner:71871): GStreamer-WARNING **: 17:40:33.576: Failed to load plugin '/usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstcompositor.so': /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstcompositor.so: undefined symbol: gst_video_aggregator_pad_get_prepared_frame ...