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| mithro | shenki: I was thinking of maybe an FPGA miniconf at LCA | 07:09 |
|---|---|---|
| mithro | shenki: thoughts? | 07:09 |
| shenki | mithro: what would the focus be? | 07:17 |
| mithro | shenki: anything FPGA related :P - open source cores, open source tools, open source boards, etc? | 07:27 |
| shenki | mithro: i like the idea of people talking about them | 07:29 |
| shenki | mithro: did you see the intel/altera news? | 07:29 |
| mithro | shenki: yeah! | 07:29 |
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| mithro | shenki: It'll be interesting to see what comes of it | 07:31 |
| mithro | shenki: Altera having access to Intel fab technology could produce some interesting things | 07:31 |
| shenki | mithro: yeah. i wonder if they'll invest in the toolchains | 07:31 |
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| tija | mithro: 720p Doesn't work in Jahanzeb's pre built. Honestly I was praying that I broke it coz fixing it would be easy. Now it is like searching a needle in a haystack. | 07:34 |
| mithro | tija: Well, lets fix some of the things you know are broken | 07:35 |
| mithro | http://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&No=941 | 07:35 |
| tpb | Title: Terasic - SoC Platform - DE0-Nano-SoC Kit/Atlas-SoC Kit (at www.terasic.com.tw) | 07:35 |
| tija | mithro: I haven't broken a lot of things honestly :P | 07:35 |
| mithro | tija: sure, but you found some things which are broken :) | 07:36 |
| tija | mithro: The only thing that is broken is that the streaming starts after reset is pressed once. | 07:37 |
| mithro | tija: Looking at the pattern generation code at https://github.com/timvideos/HDMI2USB/blob/master/hdl/misc/pattern.vhd - it looks like it should be able to generate a pattern for any resx/resy ? | 07:41 |
| tpb | Title: HDMI2USB/pattern.vhd at master · timvideos/HDMI2USB · GitHub (at github.com) | 07:41 |
| tija | mithro: How do you know this? | 07:42 |
| tija | mithro: The front porch fpX, back porch bpX etc is hard coded. | 07:43 |
| tija | for 1280x768 | 07:44 |
| mithro | tija: I don't *know* this, but the interface has two signals named resx and resy which are ints - which I assume are the "resolutionx" and "resolutiony" values? | 07:44 |
| tija | mithro: It is possible, code needs to be changed, an input signal will tell what resolution to produce and then accordinglyvalues of fpX, fpY etc are selected. | 07:48 |
| mithro | tija: are you looking at pattern.vhd right now? | 07:50 |
| tija | yes | 07:50 |
| mithro | tija: I can't see anything in there that is hard coded to a certain resolution? | 07:51 |
| mithro | tija: can you point me in the right direction - is it the spX and stuff? | 07:52 |
| tija | mithro: 96 - 98 | 07:52 |
| tija | yes | 07:53 |
| mithro | oh, resx and resy are output rather than input | 07:53 |
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| mithro | bblr meeting then dinner | 07:59 |
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| MaZderMind | it seems that building a videomixer around the inter* elements is not possible: http://lists.freedesktop.org/archives/gstreamer-devel/2015-June/053027.html | 20:13 |
| tpb | Title: debugging a/v-sync issues, possibly inter*-element related (at lists.freedesktop.org) | 20:13 |
| MaZderMind | That's because inter* element don't use upstream timestamp at all it | 20:13 |
| MaZderMind | seems, making synchronization impossible. | 20:13 |
| CarlFK | MaZderMind: dvswitch solved this problem by having a 1 or two frame buffer, and just take what is currently in the buffer. | 20:58 |
| CarlFK | I have no idea what gst-switch is doing. | 20:59 |
| CarlFK | hmm.. or if gstreamer has support for something like that | 20:59 |
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| MaZderMind | a framebuffer doesn't help with a/v sync | 21:17 |
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| MaZderMind | from irc it was suggested to keep everything in one pipeline | 21:18 |
| MaZderMind | 10:19 < heftig> for swapping sources i have a system which can swap between a videotestsrc+audiotestsrc and a bin containing fdsrc+matroskademux | 21:18 |
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| CarlFK | maybe not the buffer, but I think the fact that the dv format stores the audio and video for the same time in the same frame. | 21:46 |
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