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| hverkuil | pinchartl: I posted v3 of my 'Various core and virtual driver fixes' series. Can you take a quick look at my updated 'release' callback documentation? If it is OK, then I plan on making a pull request for this series.
Thank you very much for reviewing this series! | [09:32] |
| pinchartl | I'll have a look
you're welcome | [09:36] |
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| hverkuil | mchehab: ping | [12:25] |
| mchehab | hverkuil: pong | [12:25] |
| hverkuil | :-)
I'm testing shuah's patch series with my au0828. | [12:26] |
| mchehab | ok | [12:26] |
| hverkuil | I know how to test v4l, but not dvb. I have nothing connected to the device (I don't have a dvb signal). | [12:27] |
| mchehab | well, in order to test DVB, you need a signal :-) | [12:27] |
| hverkuil | I would like to use the dvb utils from v4l-utils to test this: i.e. put the device in dvb mode, check that I can't switch to v4l and vice versa. | [12:27] |
| mchehab | you could start a dvbv5-scan process, seeking for channels | [12:28] |
| hverkuil | I don't need to capture dvb, I only need to put the device's tuner in dvb mode (and keep it there) | [12:28] |
| mchehab | while it is doing that, it should be using both the tuner and the demux
so, it should be locked for analog mode get a channel file from https://git.linuxtv.org/dtv-scan-tables.git/ it would take ~4-5 seconds trying to tune into a channel so, the more entries the file you get have, the longer it will be in DVB mode | [12:28] |
| hverkuil | OK, that sounds perfect. | [12:30] |
| mchehab | what DTV standard does the device you have support? | [12:30] |
| hverkuil | I'm not sure, but I would expect DVB-C at least | [12:30] |
| mchehab | what's the device you have? | [12:30] |
| hverkuil | au0828 | [12:31] |
| mchehab | (I guess most au0828 are atsc) | [12:31] |
| hverkuil | Hauppauge something | [12:31] |
| mchehab | you need the exact device model | [12:31] |
| hverkuil | (sorry, it's at home and I'm in the office) | [12:31] |
| mchehab | or you can run dvb-fe-tool
$ dvb-fe-tool ... Supported delivery systems: [DVBC/ANNEX_A] DVBC/ANNEX_C DVBT ... once you check what it supports, you get a file from: https://git.linuxtv.org/dtv-scan-tables.git/tree/ | [12:31] |
| hverkuil | I'll test this tomorrow. I think I should be able to test with this information. | [12:33] |
| mchehab | dvb-c for DVBC annex A or C, dvb-s for DVB-S, dvb-t for DVB-T or atsc for ATSC
for example, if your device is ATSC, you could use this file: https://git.linuxtv.org/dtv-scan-tables.git/tree/atsc/us-ATSC-center-frequencies-8VSB then run dvbv5-scan <file> in the specific case of the random device I plugged: $ dvbv5-scan ~/dtv-scan-tables/dvb-t/au-GoldCoast ERROR command BANDWIDTH_HZ (5) not found during retrieve Cannot calc frequency shift. Either bandwidth/symbol-rate is unavailable (yet). Scanning frequency #1 767500000 (0x00) Signal= 100.00% Scanning frequency #2 585500000 ... btw, you can also pass a value to the command line in order to force a higher delay. For example, to make each channel scan to last ~40 seconds: $ dvbv5-scan /devel/v4l/dtv-scan-tables/dvb-t/au-GoldCoast -T 40 | [12:33] |
| hverkuil | That's nice for this test. | [12:37] |
| mchehab | hmm... actually, this will wait a lot more than 40 seconds... 40 is a multiply factor
(the tuning time actually depends on the device - that's why we use a multiply factor instead of seconds here) I got confused because dvbv5-zap uses seconds as timeout anyway, I guess that, for what you need, just dvb-fe-tool and dvbv5-scan should be enough | [12:37] |
| sailus | Ahoy!
I've posted a few sets on ImgU warnings fixes as well as on fwnode improvements (including driver fixes). There's more to come on the fwnode front. I intend to send pull requests once we have rc1... otherwise it's been quiet. | [12:41] |
| mchehab | hverkuil: I'm almost sure your device is ATSC
looking at drivers/media/usb/au0828/au0828-dvb.c, all devices use the integrated 8522 demod | [12:44] |
| hverkuil | mchehab: you are almost certainly right :-) | [12:45] |
| mchehab | it supports only SYS_ATSC, SYS_DVBC_ANNEX_B
(e. g. ATSC and QAM encoding, used for Cable in US) the US center file should be enough for you to test it with dvbv5-scan this file has a lot of frequencies already... it should take a while for the dvbv5-scan to complete if you want a short time, just copy the first entry of it A file with just this would be the minimal waiting time: [CHANNEL] DELIVERY_SYSTEM = ATSC FREQUENCY = 57028615 | [12:45] |
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| hverkuil | koike: ping | [14:18] |
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| sailus | jmondi: The multiplexed stream patchset starts looking pretty good.
There are a few trivial bits to fix, plus the last patch which needs either a change in the APIs or a rewrite. I'd prefer a rewrite --- the has_route() op really should not return an error. | [15:20] |
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| jmondi | sailus: Hi Sakari
sailus: Yes, the last patch should be rewritten indeed | [15:49] |
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| koike | hverkuil: pong | [17:43] |
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| vtnewb | Heyy ya'll - I'm trying to sort out an issue with PCI-E Mini board that converts 8 analog streams to h264 from Advantech for my Ubuntu 16.04 Up Squared single board computer. It uses Techwell tw6816, and I get 8 nice /dev/video hooks. Problem is, when I display video I get this: https://i.imgur.com/PqcZyZh.png
also, strangely guvcview won't display the video I have to modprobe tw68 to get the video hooks, but all looks clean on lspci and dmesg It's also worth noting, I'm more broadly looking for a solution that can grab 4 analog streams and bring it into Ubuntu for me to use with gstreamer and opencv, I don't need to use this solution, but I'm having a real hard time finding alternatives | [18:23] |
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| ndufresne | vtnewb, interesting ;-P did you try with qv4l2, with various resolution/rate/colorformats ?
I would start investigating with that guvc is for UVC stuff, this it not Ubuntu 16.04 is really ancient, you should test on newer OS in case it's already fixed | [22:41] |
| vtnewb | ndufresne, Hi ndufresne I'm unfortunately locked into 16.04 with kernel 4.14 for GPU reasons - IntelMedia SDK hardware acceleration for gstreamer encoders/decoders (yikes)
I will try qv4l2 and report back - I'm unfamiliar with that software - glad to branch out | [22:53] |
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| alright ndufresne I installed qv4l2, and saw the board was stuck in PAL, switching to NTSC fixed it
I THOUGHT That was the problem, but didn't see these changes exposed in v4l2-ctl need to figure out how to do these controls via scripts and I'll be set thanks for your help | [23:15] | |
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