<div dir="auto">Hello,<div dir="auto"><br></div><div dir="auto">The `zorder` of sources linked to the compositor is computed from the source layer priority. The clips from layers with highest prio (lower number) have a higher zorder (rendered on top).</div><div dir="auto"><br></div><div dir="auto">Regards,</div><div dir="auto"><br></div><div dir="auto">Thibault</div></div><br><div class="gmail_quote"><div dir="ltr">On Mon, Mar 19, 2018, 03:11 David Ing <<a href="mailto:ding@panopto.com">ding@panopto.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>According to the documentation, I am supposed to be able to set the 'zorder' property of a GESVideoSource:</div><div><br></div><a href="https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-editing-services/html/GESVideoSource.html" target="_blank" rel="noreferrer">https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-editing-services/html/GESVideoSource.html</a><br><div><br></div><div>Well I am able to set some of its other properties (posx, posy, width, height), but I get a WARN message when I attempt to set 'zorder' ... it tells me that this proprety does not exist (so I cannot set it).</div><div><br></div><div>0:00:23.128239884 3376 000001FAD2B640F0 WARN ges ges-timeline-element.c:1379:ges_timeline_element_set_child_property:<GESVideoUriSource@000001FAD3111460> <b>The zorder property doesn't exist</b><br></div><div><br></div><div>I am trying to render a small video in the corner of a larger video (where the smaller video is in front of the larger one). Presumably I need 'zorder' for that to work, right? Or is there some other way that I can do it?</div><div><br></div><div>Either the documentation is wrong about zorder, or I am doing something wrong. Here is what I am doing:</div><div><br></div><div>
<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">//----------------------------</span>
<br></div><div>// My code is below.</div><div>//----------------------------</div><div><div>GList* videoElements = ges_clip_find_track_elements((GESClip*)gesUriClip, gesVideoTrack,</div><div> GESTrackType::GES_TRACK_TYPE_VIDEO, G_TYPE_NONE);</div><div>GESVideoSource* videoSource = (GESVideoSource*)videoElements->data;</div><div>GESTrackElement* trackElement = reinterpret_cast<GESTrackElement*>(videoSource);</div><div>setInt(trackElement, "posx", destPosition.x.value, "Unable to set %s property of video source.");</div><div>setInt(trackElement, "posy", destPosition.y.value, "Unable to set %s property of video source.");</div><div>setInt(trackElement, "width", destPosition.width.value, "Unable to set %s property of video source.");</div><div>setInt(trackElement, "height", destPosition.height.value, "Unable to set %s property of video source.");</div><div><b>// FIXME ... why doesn't this work?</b></div><div>setUint(trackElement, "zorder", (uint32_t)(iLayer), "Unable to set %s property of video source.");</div><div><br></div><div>void setInt(GESTrackElement* trackElement, const char* name, int32_t value, const char* errorMessage)</div><div>{</div><div> GValue val = G_VALUE_INIT;</div><div> g_value_init(&val, G_TYPE_INT);</div><div> g_value_set_int(&val, value);</div><div> if (!ges_track_element_set_child_property(trackElement, name, &val))</div><div> throw std::runtime_error(formstr(errorMessage, name));</div><div>}</div><div>void setUint(GESTrackElement* trackElement, const char* name, uint32_t value, const char* errorMessage)</div><div>{</div><div> GValue val = G_VALUE_INIT;</div><div> g_value_init(&val, G_TYPE_UINT);</div><div> g_value_set_uint(&val, value);</div><div> if (!ges_track_element_set_child_property(trackElement, name, &val))</div><div> throw std::runtime_error(formstr(errorMessage, name));</div><div>}</div></div></div>
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