Sure <div class="gmail_quote">On Sun, Nov 22, 2009 at 11:43 PM, Brijesh Singh <<a href="mailto:brijesh.ksingh@gmail.com">brijesh.ksingh@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div class="im">>One of the things that i noticed is threads being spawned from within the decoder >plugins, which does not fit well with me. </div>Well threads are used for parallelizing ARM and DSP execution to meet the real-time performance on some platforms. But you can remove thread and call decoder directly from the chain() functions. Or use queue element to put the decoder element in different threads. <div class="im"> > I also noticed quite a lot of bugs in the code, which kept me from using it or hacking on it. </div>Can you please submit BUGs on <a href="http://gstreamer.ti.com" target="_blank">gstreamer.ti.com</a> ? Thanks Brijesh On Sun, Nov 22, 2009 at 11:07 AM, Sameer Naik <div><div></div><div class="h5"><<a href="mailto:sameer.subscriptions@damagehead.com">sameer.subscriptions@damagehead.com</a>> wrote: > Hello, > I had taken a look at the gstreamer-ti plugins some time back. One of the > things that i noticed is threads being spawned from within the decoder > plugins, which does not fit well with me. I also noticed quite a lot of bugs > in the code, which kept me from using it or hacking on it. Besides i already > have most of the functionality implemented and just need to tweak my > code/design a bit, hence the mail. > > Thanks and Regards > ~Sameer > > On Sun, Nov 22, 2009 at 9:27 PM, Brijesh Singh <<a href="mailto:brijesh.ksingh@gmail.com">brijesh.ksingh@gmail.com</a>> > wrote: >> >> Hello, >> >> Have you looked at <a href="http://gstreamer.ti.com" target="_blank">gstreamer.ti.com</a> ? gst_ti has all the elements you >> need. It support wide varity of TI platforms. (DM6446, DM355, DM365, >> DM357, DM6467, OMAP3530 and more...). >> >> To understand design detail you can watch 25-min of video presentation. >> >> >> <a href="https://gstreamer.ti.com/gf/project/gstreamer_ti/wiki/?pagename=OverviewPresentation" target="_blank">https://gstreamer.ti.com/gf/project/gstreamer_ti/wiki/?pagename=OverviewPresentation</a> >> >> We do not have pad-allocation method yet (may be you can contribute on >> project). We use hw accelerated framecopy to copy the data from video >> decoder -> sink element. Depending on the platform, this hw >> accelerator may be resizer/dma/vdce/sdma etc... >> >> >> Thanks >> Brijesh >> >> On Sun, Nov 22, 2009 at 4:18 AM, Sameer Naik >> <<a href="mailto:sameer.subscriptions@damagehead.com">sameer.subscriptions@damagehead.com</a>> wrote: >> > Hi, >> > I am developing a multimedia application for an embedded system based on >> > TI's DM6446 platform. The decoding of the audio and video frames will be >> > done using the HW decoders. The platform also includes a hardware >> > resizer, >> > that allows resizing of the video frames in hardware, thereby making the >> > resizing operations pretty quick. >> > >> > I need some advice on the architecture that i should base by application >> > on. >> > Following are the architectures that i have come up with >> > >> > 1. >> > - audio decoder plugins >> > - video decoder plugins >> > - resizer plugin >> > - frame buffer output plugin >> > Here i can build a seperate plugin to do the resizing of video frames. >> > This >> > would conform more with gstreamer's idea that "every element does one >> > thing", providing better reusability. To reduce to number of memcpy's, i >> > could equip the frame buffer plugin with pad allocation capabilities and >> > accordingly add pad_alloc calls in the resizer plugin. The only this is, >> > in >> > this case the frames will always be resized, regardless of whether the >> > frame >> > is going to be displayed or dropped. I am not really sure whether this >> > is >> > that big of a problem considering that the number of frames that could >> > be >> > dropped is very less. >> > >> > 2. >> > - audio decoder plugins >> > - video decoder plugins >> > - frame buffer plugin with resizing capabilities using the hw resizer. >> > Here i can build the frame buffer plugin with the built in capability to >> > resize video frames. In this case i could resize the frame only if it is >> > going to be displayed (i.e. just before it would be displayed on >> > screen). >> > Now in this case i loose the reusability advantage, which i can live >> > with if >> > i am able to achieve smooth video playback with av sync. In this case, I >> > am >> > not sure whether the last minute resizing of the frame would introduce a >> > lot >> > of latency while displaying the frame. Given that it is a hardware >> > resizer i >> > am assuming it would be quick. >> > >> > P.S. I would be employing the pad allocation method in other parts of >> > the >> > pipeline as well, so as to reduce the number of memcpy's going on in the >> > pipeline. >> > >> > Please Advice. >> > >> > Regards >> > ~Sameer >> > >> > >> > >> > ------------------------------------------------------------------------------ >> > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 >> > 30-Day >> > trial. Simplify your report design, integration and deployment - and >> > focus >> > on >> > what you do best, core application coding. Discover what's new with >> > Crystal Reports now. <a href="http://p.sf.net/sfu/bobj-july" target="_blank">http://p.sf.net/sfu/bobj-july</a> >> > _______________________________________________ >> > gstreamer-devel mailing list >> > <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> >> > <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> >> > >> > >> >> >> >> -- >> Confusion is always the most honest response. >> >> >> ------------------------------------------------------------------------------ >> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 >> 30-Day >> trial. Simplify your report design, integration and deployment - and focus >> on >> what you do best, core application coding. Discover what's new with >> Crystal Reports now. <a href="http://p.sf.net/sfu/bobj-july" target="_blank">http://p.sf.net/sfu/bobj-july</a> >> _______________________________________________ >> gstreamer-devel mailing list >> <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> >> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> > > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus > on > what you do best, core application coding. Discover what's new with > Crystal Reports now. <a href="http://p.sf.net/sfu/bobj-july" target="_blank">http://p.sf.net/sfu/bobj-july</a> > _______________________________________________ > gstreamer-devel mailing list > <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> > <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> > > -- Confusion is always the most honest response. ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. 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