<html> <head> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">On 01/10/2015 04:52 PM, Charlie FG wrote: </div> <blockquote cite="mid:54B14AB6.6000006@carrotsrc.org" type="cite"> <pre wrap="">On 09/01/15 19:52, Stefan Sauer wrote: </pre> <blockquote type="cite"> <pre wrap="">On 01/09/2015 12:37 AM, Charlie FG wrote: </pre> <blockquote type="cite"> <pre wrap="">I place 'audioecho' element (already linked between two 'audioconvert' elements) into the pipeline but 3500 milliseconds after it has switched to PLAYING ... It does work but with a major drawback - there is silence for ~3500ms (once the 'queue' has expended it's buffers). If I change the time of the hot-linking event to, say, 12000ms it will be silent for ~12000ms; once it has seemingly caught up, it will play from the point the 'audioecho' was linked in, with the echo active. </pre> </blockquote> <pre wrap="">It's an filter element that does transform inplace - that is the output buffers have the same metadata is the inputs. Is your code public, seeing it might help, this sounds a bit like as if the new elements are not properly setup in terms of the playback segment. Stefan </pre> </blockquote> <pre wrap=""> Stefan, First, thank you very much for your time! For quick reference - a PipeSegment is a collection of elements to be put into a Pipeline. The Pipeline is acting as an abstraction of GstPipeline. The PipeSegments share the common GstPipeline held in the Pipeline object they added to. Here is the main flow so you don't have to waste time hunting around in the repo for the bits and bobs. --- The setup of the initial pipeline is in loadplay.cpp, from line 32 After the event is triggered, it tells the Pipeline to insert a new 'effects' PipeSegment on 64 (The effects PipeSegment is defined on line 97 <a class="moz-txt-link-freetext" href="https://github.com/carrotsrc/rackoonIO/blob/master/gst/loadplay.cpp">https://github.com/carrotsrc/rackoonIO/blob/master/gst/loadplay.cpp</a> ---- The insertion jumps to Pipeline.cpp, Pipeline::insertSegment() on line 26. Here is where the blocking probe is added. <a class="moz-txt-link-freetext" href="https://github.com/carrotsrc/rackoonIO/blob/master/gst/lib/Pipeline.cpp">https://github.com/carrotsrc/rackoonIO/blob/master/gst/lib/Pipeline.cpp</a> --- Once the probe is added, it jumps to AudioEvents.cpp into the only function in there. Here is where it * sets the new elements' state to PLAYING (19) * adding the new elements to the bin + linking them together (22) * unlinking of the two surrounding elements (24) * linking new elements into pipeline (26,29) * removing pad <a class="moz-txt-link-freetext" href="https://github.com/carrotsrc/rackoonIO/blob/master/gst/lib/AudioEvents.cpp">https://github.com/carrotsrc/rackoonIO/blob/master/gst/lib/AudioEvents.cpp</a></pre> </blockquote> A tiny suggestion - instead of <meta http-equiv="content-type" content="text/html; charset=utf-8"> <table class="highlight tab-size-8 js-file-line-container" style="box-sizing: border-box; border-collapse: collapse; border-spacing: 0px; tab-size: 8; color: rgb(51, 51, 51); font-family: Helvetica, arial, freesans, clean, sans-serif, 'Segoe UI Emoji', 'Segoe UI Symbol'; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 18.2000007629395px; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);"> <tbody style="box-sizing: border-box;"> <tr style="box-sizing: border-box;"> <td id="LC32" class="blob-code js-file-line" style="box-sizing: border-box; padding: 0px 10px; position: relative; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 12px; color: rgb(51, 51, 51); vertical-align: top; white-space: pre; overflow: visible;">gst_pad_remove_probe (pad, GST_PAD_PROBE_INFO_ID (info));</td> </tr> <tr style="box-sizing: border-box;"> <td id="L33" class="blob-num js-line-number" data-line-number="33" style="box-sizing: border-box; padding: 0px 10px; width: 50px; min-width: 50px; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 12px; line-height: 18px; color: rgba(0, 0, 0, 0.298039); vertical-align: top; text-align: right; border-style: solid; border-color: rgb(238, 238, 238); border-width: 0px 1px 0px 0px; cursor: pointer; -webkit-user-select: none;"> </td> <td id="LC33" class="blob-code js-file-line" style="box-sizing: border-box; padding: 0px 10px; position: relative; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 12px; color: rgb(51, 51, 51); vertical-align: top; white-space: pre; overflow: visible;"> free(data);</td> </tr> <tr style="box-sizing: border-box;"> <td id="L34" class="blob-num js-line-number" data-line-number="34" style="box-sizing: border-box; padding: 0px 10px; width: 50px; min-width: 50px; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 12px; line-height: 18px; color: rgba(0, 0, 0, 0.298039); vertical-align: top; text-align: right; border-style: solid; border-color: rgb(238, 238, 238); border-width: 0px 1px 0px 0px; cursor: pointer; -webkit-user-select: none;"> </td> <td id="LC34" class="blob-code js-file-line" style="box-sizing: border-box; padding: 0px 10px; position: relative; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 12px; color: rgb(51, 51, 51); vertical-align: top; white-space: pre; overflow: visible;"> </td> </tr> <tr style="box-sizing: border-box;"> <td id="L35" class="blob-num js-line-number" data-line-number="35" style="box-sizing: border-box; padding: 0px 10px; width: 50px; min-width: 50px; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 12px; line-height: 18px; color: rgba(0, 0, 0, 0.298039); vertical-align: top; text-align: right; border-style: solid; border-color: rgb(238, 238, 238); border-width: 0px 1px 0px 0px; cursor: pointer; -webkit-user-select: none;"> </td> <td id="LC35" class="blob-code js-file-line" style="box-sizing: border-box; padding: 0px 10px; position: relative; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 12px; color: rgb(51, 51, 51); vertical-align: top; white-space: pre; overflow: visible;"> cout << "~~~Hotlinking" << endl;</td> </tr> <tr style="box-sizing: border-box;"> <td id="L36" class="blob-num js-line-number" data-line-number="36" style="box-sizing: border-box; padding: 0px 10px; width: 50px; min-width: 50px; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 12px; line-height: 18px; color: rgba(0, 0, 0, 0.298039); vertical-align: top; text-align: right; border-style: solid; border-color: rgb(238, 238, 238); border-width: 0px 1px 0px 0px; cursor: pointer; -webkit-user-select: none;"> </td> <td id="LC36" class="blob-code js-file-line" style="box-sizing: border-box; padding: 0px 10px; position: relative; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 12px; color: rgb(51, 51, 51); vertical-align: top; white-space: pre; overflow: visible;"> GST_INFO("RackoonIO Event: ~Hotlinking");</td> </tr> <tr style="box-sizing: border-box;"> <td id="L37" class="blob-num js-line-number" data-line-number="37" style="box-sizing: border-box; padding: 0px 10px; width: 50px; min-width: 50px; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 12px; line-height: 18px; color: rgba(0, 0, 0, 0.298039); vertical-align: top; text-align: right; border-style: solid; border-color: rgb(238, 238, 238); border-width: 0px 1px 0px 0px; cursor: pointer; -webkit-user-select: none;"> </td> <td id="LC37" class="blob-code js-file-line" style="box-sizing: border-box; padding: 0px 10px; position: relative; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 12px; color: rgb(51, 51, 51); vertical-align: top; white-space: pre; overflow: visible;"> return GST_PAD_PROBE_OK;</td> </tr> </tbody> </table> just return GST_PAD_PROBE_REMOVE; In my app, I first link and then set the new elements to PLAYING. But for effects this should not make much of a difference. Also as one tricky part - I query the current upstream playback position and also send a seek to sync the new elements, I think that this is not needed anymore though. Stefan <blockquote cite="mid:54B14AB6.6000006@carrotsrc.org" type="cite"> <pre wrap=""> --- The issue may be compounded by my making it semi-oop without properly understanding Gstreamer ;) Charlie _______________________________________________ gstreamer-devel mailing list <a class="moz-txt-link-abbreviated" href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </pre> </blockquote> </body> </html>