• [00:03:46] <djlewis> hi mru
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  • [01:51:17] <lemay> hey djlewis
  • [01:51:25] <djlewis> i was gone and didnt know it
  • [01:51:29] <djlewis> Hi lemay :)
  • [01:52:04] <djlewis> pulled my eth cable a while back and forgot to reconnect irc..
  • [01:53:07] <djlewis> logs tell me I didnt miss anything.
  • [01:54:01] <ckrinke> Evening, djlewis.
  • [01:54:18] <djlewis> yo ckrinke, how goes it?
  • [01:55:19] <ckrinke> I figured out the u-boot string between my two demo boards over the weekend. The syntax is a little bit different between 2.6.28 and 2.6.29. the 2.6.29 has a "dvi" statement missing in 2.6.28 for Beagle Board
  • [01:55:30] <ckrinke> the "video set mode" part
  • [01:56:05] <djlewis> yep that one snuck up on me a while back.
  • [01:56:22] <ckrinke> Got BitBake and OpenEmbedded to run to completion by re-formatting one of my systems to Debian. On Fedora10, the BitBake kept failing on "qemu-native", but Debian works fine
  • [01:56:32] <ckrinke> Now, I need to figure out how to "really" work BitBake
  • [01:57:14] <djlewis> when you get to baking recipi's i'll be calling on ya ;)
  • [01:57:41] <ckrinke> oh garsh, my mind is spinning after reading the OpenEmbedded book on that part this morning
  • [01:58:01] <djlewis> lots of fun ahead dude..
  • [01:58:55] <ckrinke> I need to use "tesseract" which is an OCR engine. BitBake has a recipe for tesseract-1.0 which I can get to compile if I comment out two "extern" that battle with each other. But, ... what I really need is a recipe for tesseract-2.0
  • [01:59:17] <ckrinke> So, ... I suspect I will be in the midst of recipes before long
  • [01:59:33] <djlewis> cool, lemay has been there
  • [01:59:49] <ckrinke> For this week, I will be happy if I can take the result of the "deploy" directory and actually load uImage and the 'baked' root file system
  • [02:00:13] <djlewis> yep, my first test was a console image that worked :)
  • [02:00:28] <djlewis> 11 hours of making
  • [02:00:31] <ckrinke> Coolness, then I shall try not to loose my optimism
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  • [02:00:50] <ckrinke> oh, yeah, I watched all that go on over the weekend for "base-image"
  • [02:01:20] <djlewis> really occupies a medium class computer...
  • [02:01:40] <ckrinke> Well, thats ok, the fact that it completes is a minor miracle in itself
  • [02:02:24] <ckrinke> now I need to get to a 'grok' on all the environment variables and how they affect the "./configure" step with the arm cross compiler.
  • [02:02:25] <djlewis> This Centrino Dual 2Ghz hp laptop just chews away at it.
  • [02:02:56] <ckrinke> those are good CPU's. I have one in my dell 9400
  • [02:03:02] <djlewis> I went off on one of those tangents Saturday.
  • [02:03:26] <djlewis> trying to build gst-edit for wkstn
  • [02:03:54] <ckrinke> Yep. I forget all the syntax for ./configure cross-compile as I have not done it for a few years.
  • [02:05:17] <djlewis> atm I have this 7 line command I need to trim down a bit
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  • [02:18:05] <ckrinke> fritzen-fracken wireless keyboard batteries
  • [02:18:53] <djlewis> oh, thats what happend to ya
  • [02:19:34] <ckrinke> battery ran down and I couldnt type anything
  • [02:20:05] <ckrinke> Thought it was the IRC client, so I tried to restart it, but could not type in "join #beagle" until I found 2 AAA cells
  • [02:21:02] * djlewis hates 3-AAA batteries
  • [02:21:16] <djlewis> or any AAA's for that matter
  • [02:21:38] <ckrinke> It was an experiment buying one of those wireless keyboards with rodents. I thought it would cut down on wires a bit.
  • [02:22:11] * djlewis likes his wired :)
  • [02:22:45] <djlewis> yep, wireless is a good notion but prone to failure
  • [02:23:05] <djlewis> A guy I work with loves his
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  • [02:23:26] <ckrinke> oh well, life marches on regardless of all our kicking and screaming
  • [02:23:43] <djlewis> thats what sakoman tells me :(
  • [02:24:30] <djlewis> sakoman: just kidding :)
  • [02:24:34] <ckrinke> he is a smart cookie
  • [02:24:47] <djlewis> yep..
  • [02:25:24] <djlewis> I used get flak from guys cause I wouldn't let my good ol w98 go.
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  • [03:43:43] <Code_Bleu> can i build a wireless access point with a beagle board?
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  • [04:07:40] <djlewis> goodnight guys
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  • [04:28:43] <_av500_> gm guys
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  • [06:06:48] <tasslehoff> I have some kernel issues running the angstrom demo. The demo image had 2.6.28-omap1, but the uImage from the same site has installed 2.6.29-omap1. When I try to load modules for communication with the dsp, I get "FATAL: Could not load /lib/modules/2.6.28-omap1/modules.dep"
  • [06:06:58] <tasslehoff> and good morning :)
  • [06:11:32] <tasslehoff> "uname -r" says 2.6.28-omap1, and /lib/modules contains only 2.6.29-omap1
  • [06:18:35] <av500> well, it help to make kernel and modules that match
  • [06:18:46] <av500> well, it helps to have kernel and modules that match
  • [06:18:50] <av500> and gm :-)
  • [06:24:40] <tasslehoff> av500: :)
  • [06:25:48] <tasslehoff> av500: not sure I understand this. the demoimage has apparently been upgraded with the kernel from the uImage? shouldn't "uname -r" then display the new kernel version?
  • [06:26:18] <nullpuppy> Have any of you used a J-Link jtag adapter for jtag stuff with the beagleboard?
  • [06:26:24] <tasslehoff> I downloaded u-boot.bin, uImage and Angstrom-demo from the same site
  • [06:26:38] <av500> i dont know about the demo image, but u have to use modules that have been built for a specific kernel
  • [06:26:51] <nullpuppy> running latest openocd from svn and not getting much as far as results.
  • [06:26:52] <av500> uname should give u the version of the running kernel, yes
  • [06:27:08] <av500> nullpuppy: not manny ppl use jtag here
  • [06:27:20] <nullpuppy> av500: alright. dang.
  • [06:27:40] <av500> iirc cortex a8 support was in the making for openocd, no?
  • [06:27:45] <av500> is it finished?
  • [06:28:00] <nullpuppy> not complete, but there is limited support.
  • [06:28:20] <nullpuppy> I'll have to do some digging and see what i can figure out.
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  • [06:32:39] <tasslehoff> av500: isn't it strange that "uname -r" gives me a kernel version not in /lib/modules?
  • [06:34:01] <tasslehoff> another topic: can I use a hdmi-hdmi cable with the beagle? using "omapfb.mode=dvi:1280x720MR-16@60" this did not work (but it worked with hdmi-dvi), but maybe something else does?
  • [06:36:25] <adj> yes, you can. But i've seen discussions about some issues with this setup as it seems that some televisions require more precise timings than ordinary computer monitors
  • [06:36:59] <adj> but as i haven't tried this nor have i knowledge on this, i will shut up now :)
  • [06:38:36] <tasslehoff> adj: hehe. glad you said what you did :)
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  • [06:41:22] <av500> tasslehoff: its not strange, u have a kernel that does not match your root fs
  • [06:42:11] <av500> tasslehoff: hdmi-hdni and hdmi-dvi are electrically the same
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  • [06:47:16] <tasslehoff> av500: meaning that the kernel in my uImage is used but not "fully installed" to my rootfs? sorry if I'm being dense here, but I don't understand where I did wrong :). Unless I'm not meant to use both demo image and uImage from http://www.angstrom-distribution.org/demo/beagleboard/
  • [06:47:45] <av500> the kernel is loaded from uimage, the root fs is whatever u put on your sdcard, 2nd partition
  • [06:47:56] <av500> so there is a change that they dont match
  • [06:48:17] <av500> there is nothing to be "installed"
  • [06:48:36] <av500> uboot loads kernel from uimage, then this kernel uses the root fs that it finds on the sdcard
  • [06:52:06] <adj> modules matching the kernel would be nice to be "installed", that is, copied to the right place
  • [06:52:41] <av500> from where?
  • [06:53:11] <adj> where ever the kernel is built at
  • [06:53:29] <raster> the kernel is built likely on your pc
  • [06:53:38] <raster> it is up to you to put it on storage the device can access
  • [06:53:42] <av500> yes, but once you get to install a uimage and a rootfs, these are 2 separate files....
  • [06:53:43] <raster> eg flash, sd card etc.
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  • [06:54:13] <tasslehoff> av500: ok. slowly gaining some understanding here :)
  • [06:54:26] <winCE> hi does any one running wince on beagle board?
  • [06:54:30] <av500> of course putting a matching kernel and root fs into a e.g. zip file would help to prevent a mismatch...
  • [06:54:36] * av500 winces
  • [06:55:54] <tasslehoff> is there a command I can use to check the contents of my uImage?
  • [06:56:07] <av500> uname?
  • [06:56:32] <av500> but this assumes you booted it
  • [06:56:35] * raster cringes
  • [06:56:55] <raster> winCE: u might want to contact microsoft customer support for wince stuff
  • [06:56:56] <raster> :)
  • [06:56:57] <av500> raster: you run cringe on BB?
  • [06:57:09] <adj> anyway, if i build a new kernel which depends on some modules i find it more than convenient to copy newly built modules to the correct directory on the rootfs
  • [06:57:14] <raster> cringe... now thats a goiod name for an app
  • [06:57:16] <av500> or at least TI, I know they have a CE bsp...
  • [06:57:16] <raster> or something...
  • [06:57:18] <raster> :)
  • [06:58:08] <tasslehoff> gahhhhhhhh
  • [06:58:24] <tasslehoff> av500: I have been downloading an ooooooold uImage all the time.
  • [06:58:42] * mykro (n=notranc@zima.linwin.com) Quit (Remote closed the connection)
  • [06:59:25] <raster> oooh not bad
  • [06:59:26] * tasslehoff shuffles into the darkest corner of the room
  • [06:59:44] <av500> raster: do the fish thing
  • [06:59:46] <winCE> hmm
  • [06:59:46] <raster> Cpu(s): 9.5%us, 17.8%sy, 66.4%ni, 6.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
  • [06:59:59] <raster> i'm managing to keep both my cores nice and busy...
  • [07:00:21] <av500> 2 cores only=
  • [07:00:24] <av500> ?
  • [07:00:38] <raster> well i only have 2
  • [07:00:43] <raster> :)
  • [07:01:25] <av500> I have 4(+4) waiting for user input all day....
  • [07:01:53] <raster> type faster damnit!
  • [07:01:55] <raster> :)
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  • [08:01:31] <koen> good morning all
  • [08:03:03] <av500> gm kOEn
  • [08:03:07] <tasslehoff> good morning koen
  • [08:10:59] <Christos_N|Work> gm KoeN
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  • [09:31:50] <ThomasEgi> http://tech.mit.edu/V128/N30/subway/Defcon_Presentation.pdf page 82... warcarting .. i cant stop laughting..
  • [09:33:05] * winCE (i=3b5fe0e4@gateway/web/freenode/x-irqawdxneyvvezfi) Quit (Ping timeout: 180 seconds)
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  • [09:40:03] * _dash_ is pinging for connectivity check
  • [09:40:42] <av500> I get you s9+60
  • [09:44:48] <Christos_N|Work> S9+90..
  • [09:51:28] <ThomasEgi> 630ms
  • [09:52:37] <av500> Christos_N|Work: u have the bigger antenna...
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  • [10:07:28] <tasslehoff> from time to time I lose connection with my beagle. mouse/keyboard doesn't work. I don't have anything that should move on screen, so I'm not sure if the entire x-server has frozen. the minicom prompt is still alive.
  • [10:08:19] <av500> and dmesg says what?
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  • [10:12:50] * XorA|flu is now known as XorA
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  • [10:22:24] <tasslehoff> av500: http://ja.pastebin.ca/1575078
  • [10:22:30] <tasslehoff> japanese for some reason :)
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  • [10:23:50] <tasslehoff> After starting a gst-launch that decodes mp4 in the dsp I tried to start "top" in a terminal. Now the video is still running, but I have lost all input from keyboard/mouse.
  • [10:33:27] * cody__ (n=sisnkotu@faui00a.informatik.uni-erlangen.de) has joined #beagle
  • [10:33:33] <cody__> hi
  • [10:33:59] <cody__> is there a list of working usb ethernet adapters for the beagleboard?
  • [10:35:51] <av500> tasslehoff: there are known issue around BB EHCI... :(
  • [10:36:05] <av500> u could try to use the otg for kbd/mouse...
  • [10:36:37] <av500> tasslehoff: http://pastebin.ca/1575078
  • [10:39:36] <tasslehoff> av500: can I use otg for mouse, keyboard, ethernet and power at the same time?
  • [10:39:57] <av500> tasslehoff: you can power from the dc-in jack
  • [10:40:24] <av500> and move the hub to the otg
  • [10:40:33] <tasslehoff> av500: can, or have to when using otg for devices?
  • [10:40:43] <av500> have to
  • [10:40:47] <tasslehoff> av500: ok.
  • [10:41:01] <tasslehoff> then I guess I need a mini-b to mini-b cable as well.
  • [10:41:02] <av500> otg as host forbids to power it from there
  • [10:41:13] <tasslehoff> av500: of course. thanks
  • [10:41:15] <av500> mini-A to mini-B
  • [10:41:30] <av500> mini-A tells the port that it is otg
  • [10:41:42] <av500> unless you force that in the module loading or so
  • [10:46:14] <tasslehoff> av500: ok.
  • [10:46:36] * _koen_ loves his zippy daughterboard for providing non-usb ethernet
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  • [11:10:14] <XorA> _koen_: where do you live again? just so I can organise the burgalary
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  • [11:12:13] <_koen_> XorA: :)
  • [11:12:33] * mru activates the tracker in _koen_'s phone
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  • [11:19:02] <Crofton|work> _koen_, I will most likely by a zippy for that, although I am having connector orientation issues :)
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  • [11:25:54] <XorA> they are taking down the lego house :-(
  • [11:29:17] * khasim (n=a0393720@192.163.20.231) Quit (Remote closed the connection)
  • [11:29:19] <Crofton|work> that is sad
  • [11:29:36] <_koen_> XorA: with chainsaws :(
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  • [11:30:37] <XorA> _koen_: it amuses me that its a hard hat zone :-)
  • [11:39:16] * Crofton|work wonders how you make a working toilet from Lego
  • [11:40:36] <XorA> Crofton|work: wouldnt be that hard if you were allowed to seal it with epoxy
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  • [12:27:03] <tasslehoff> av500: are there specific scenarios that are known to cause usb-unstability?
  • [12:29:23] <av500> yes, e.g. a high cpu load
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  • [12:33:10] <tasslehoff> av500: could explain it :)
  • [12:33:25] <mru> which usb?
  • [12:33:41] <av500> ehci
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  • [12:58:39] <Joe___> hi there
  • [12:59:07] <Joe___> a newbie needs some help
  • [12:59:33] <Joe___> where is a simple text editor under Angstrom????
  • [13:00:44] <adj> vi is there :)
  • [13:01:40] <tasslehoff> adj: he said simple ;-)
  • [13:02:03] <Joe___> oh thanks!
  • [13:02:29] <adj> opkg install nano
  • [13:02:53] <Joe___> directry from Terminal?
  • [13:03:12] <adj> yes
  • [13:03:16] <Joe___> thanks
  • [13:03:36] <adj> requires you to have a working network, though
  • [13:04:09] <Joe___> I have network with my BB since yesterday :)
  • [13:04:32] <Joe___> what is so special about apt-get?
  • [13:04:57] <XorA> special?
  • [13:05:10] <Joe___> seems not to be available in Angstrom demo
  • [13:05:26] <XorA> because we dont make aptable feeds
  • [13:05:39] <adj> opkg is somewhat like apt-get/dpkg, only simpler
  • [13:05:47] <Joe___> XorA: are you from Angstrom team?
  • [13:05:55] <XorA> Joe___: yes
  • [13:06:05] <Joe___> nice to see you :)
  • [13:06:35] <XorA> as is _koen_ hrw|gone Crofton|work and many others
  • [13:08:57] <Joe___> since I've got network, I will be more active with BB now
  • [13:09:21] * mru is just an infiltrator...
  • [13:10:48] <_dash_> bye all
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  • [13:12:13] <Joe___> bye all thanks for help
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  • [14:02:43] <aliamir> hello
  • [14:03:03] <aliamir> I have a question about the beagle board
  • [14:03:34] <av500> just ask
  • [14:03:50] <aliamir> I'm looking to connect a ps/2 keyboard to the beagleboard, is there a way to connect it without using usb?
  • [14:04:04] <aliamir> like through uart?
  • [14:04:08] <av500> might work
  • [14:05:11] <aliamir> do you know if its possible to connect ps/2 to the serial port?
  • [14:06:13] <rhk> ps/2 is a serial bus, but it's not RS232
  • [14:06:18] * j_ack (n=j_ack@p57A429D9.dip0.t-ipconnect.de) Quit ("Verlassend")
  • [14:06:38] <mru> you could still connect it ;-)
  • [14:06:46] <aliamir> haha
  • [14:06:59] <mru> it's still an electrical interface
  • [14:07:06] <aliamir> so there is no native support for ps/2 on the beagle board?
  • [14:07:25] <rhk> http://en.wikipedia.org/wiki/PS/2_connector
  • [14:07:29] <mru> just use usb
  • [14:07:41] <rhk> "serial data at 10 to 16 Khz with 1 stop bit, 1 start bit, 1 parity bit (odd)"
  • [14:07:42] <av500> aliamir: native no...
  • [14:07:46] <aliamir> the thing is i want to keep usb just for debugging
  • [14:07:53] <rhk> looks like ttl signal levels
  • [14:08:20] <aliamir> does the serial port on the beagle board use ttl or no?
  • [14:08:20] <rhk> there is a clock line though, so it looks synchronous rather than async
  • [14:08:42] <av500> aliamir: you can make a PS/2 to serial converter....
  • [14:09:42] <aliamir> do you mean like programming a PIC in between?
  • [14:09:45] <rhk> there is an rs232 level shifter on the beagle board
  • [14:09:46] <av500> yep
  • [14:09:56] <aliamir> oh i see
  • [14:10:29] <aliamir> so the beagle board can be used for both rs232 voltage or ttl?
  • [14:10:51] <rhk> no
  • [14:10:58] <rhk> unless you bypass the level shifter
  • [14:11:07] <aliamir> ok thanks
  • [14:11:08] <rhk> but then I don't think it's ttl level. (5V)
  • [14:11:16] <rhk> probably 3.3 or 1.8
  • [14:12:17] <aliamir> ok
  • [14:13:19] <rhk> the chip is rated 3V - 5.5V, so it's probably 3.3
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  • [14:13:34] <rhk> (MU221E)
  • [14:13:37] <av500> aliamir: http://www.electronic-engineering.ch/microchip/projects/keyboard/v1xx/keyboard_v1xx.html
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  • [14:15:32] <aliamir> thanks guys, i'll do some reading and ask you guys some more if i need help
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  • [14:41:39] * Crofton crosses his fingers that DSS2 gets merged
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  • [14:49:05] <ojn> Crofton: not looking promising
  • [14:49:25] <ojn> Given that we're halfway through the merge window and it's technically not a compeltely new driver. :(
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  • [14:49:49] <av500> it will be there in 2.7....
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  • [15:26:39] <noobjoe> hi all, i've got a query here
  • [15:26:55] <noobjoe> if anybody's listening, do they ship Beagle Boards to India?
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  • [15:29:16] <tasslehoff> I have played around with existing frameworks and images on the beagle for a while, and I have some thoughts about how to go about to create my own application and custom image. It want to try to get some feedback on this, but it's a bit too lenghty for irc. What forum/mailinglist could I use for this? Among the topics are compiling my own image with OE, using gstreamer og writing own dsp code, and real time performance.
  • [15:29:41] <tasslehoff> s/og/or
  • [15:32:03] <av500> these are all separate questions...
  • [15:32:32] <av500> there is the BB ml of course
  • [15:32:36] <noobjoe> btw, does anyone know if the Beagle Board ships to India?
  • [15:32:46] <av500> I guess so
  • [15:32:59] <av500> what does digikey say?
  • [15:33:02] <tasslehoff> av500: I'll start with the bb mailing list and see what happens
  • [15:33:49] <noobjoe> thanks
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  • [15:51:46] <ckrinke> tasselhoff: These are all good questions and many of us are working on our own projects on this channel and the mailing lists. The answers tend to involve *lots* of googling and reading.
  • [15:53:00] <av500> ckrinke: yep
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  • [15:54:42] <ckrinke> To set the stage, tasslehoff. The first step is to work out the details of using "bitbake" to create an "x11-image". After it is created, then one needs to work out how to partition an SD card into a DOS and Linux partitions (two partitions), load the BeagleBoard with that image and determine a baseline. Getting to that point can take anywhere from a day to two weeks.
  • [15:55:51] <av500> ckrinke: or use a prebuilt image :-)
  • [15:56:53] <ckrinke> Certainly. As long as the prebuilt image has sufficient capability to support tasselhoff's (or anyone elses) *vision*
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  • [15:59:02] <av500> "People with visions should see a doctor. -- Helmut Schmidt, ex-German chancellor"
  • [16:01:23] <ojn> ...or just install a generic distro that has pretty much everything you need.
  • [16:02:10] <ojn> depending on the value of your time, it makes sense to spend a few dollars more on a 4G SD card and just do that.
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  • [16:02:51] <av500> thats like buying a prebuilt erector set :-)
  • [16:03:05] <ojn> Depends on the purpose of the exercise
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  • [16:03:18] <ojn> it's more like buying a prebuilt car. :)
  • [16:03:29] <av500> now where is the fun in that :-)
  • [16:03:45] <ojn> As I said, depends on the value of your time. Lots of stuff is free if your time has no value. :)
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  • [16:04:52] <ojn> Oh sweet, an actual pull request for DSS2. That's what the comments was about on here this morning.
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  • [16:05:05] <ojn> that's a little more promising.
  • [16:06:46] <tasslehoff> ckrinke: I'm past that point. I have bitbaked my own base, console and x11 image and tested them.
  • [16:08:36] <tasslehoff> I have also played around with prebuilt images, but I suspect I will have to tailor my own, probably based on angstrom
  • [16:10:38] <av500> tasslehoff: what do you want to do in terms of "vision"?
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  • [16:16:51] <inio> one quick question: are J4 and J5 (the raw LCD signal headers) on the Rev C3? Everywhere I see that feature mentioned it says "C2" only
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  • [16:17:50] <av500> yes, c3 too
  • [16:18:17] <inio> that's what I thought, wanted to make sure before I ordered one :)
  • [16:19:19] <tasslehoff> av500: The application will receive video over usb (either h.264 encoded or raw video). This should be displayed on a display with gui/indicators overlayed. The video must use as short time as possible from usb -> display.
  • [16:20:45] <av500> ok
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  • [16:40:10] <cody___> has somebody tried dvb on beagleboard?
  • [16:40:54] * av500 watches dvb-t on an omap3...
  • [16:41:01] <cody___> oh nice
  • [16:41:22] <cody___> which dvb-t card?
  • [16:41:31] <cody___> i would like to have dvb-s
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  • [16:42:00] <av500> cody__: nothing off the shelf
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  • [16:42:09] <cody___> ?
  • [16:42:25] <mru> where from then? under a rock?
  • [16:42:42] <tasslehoff> Figured maybe I could start with an angstrom base-image or console-image and then add the packages and modules I need. I don't (think I) want to start an X server, so I need to figure out how to write my video and gui to some framebuffer.
  • [16:43:07] <av500> mru: rocks were involved, ppl got hurt
  • [16:43:19] <av500> cody__: we sell that as an option for our players
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  • [16:45:05] <cody___> mh ok
  • [16:45:42] <cody___> is the support for usb hardware on arm as good as on x86?
  • [16:48:07] <av500> most usb drivers dont even realize they are not in kansas any more...
  • [16:48:48] <cody___> ehm... what does that mean?=)
  • [16:48:58] <cody___> that they arent on x86?
  • [16:49:03] <av500> yes :)
  • [16:49:07] <cody___> ok!
  • [16:49:19] <cody___> sounds too great to be true
  • [16:49:39] <cody___> will try my dvb-s card soon
  • [16:51:01] <av500> cody__: of course you will have trouble to decode high bitrate MPEG2 etc..
  • [16:51:48] <av500> so the problems are more the restricted resources than the x86 vs arm instruction set...
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  • [16:53:54] <warthog263> i've been wrestling with a kernel compile - makefile doesnt like omap3_beagle_defconfig - it gets stuck at kconfig
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  • [16:57:22] <cody___> i think dvb-s has lower bitrate than dvd
  • [16:57:34] <cody___> and dvd worked quite ok
  • [16:57:42] <cody___> not perfect though
  • [16:58:03] <cody___> even if it doesnt i could use it as streaming server
  • [16:58:38] <av500> cody__: I have seen DVB-T with 10mbit/s...
  • [16:59:03] <cody___> i dont have seen dvb-s > 4mbit/s yet
  • [16:59:11] <cody___> no high definition
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  • [17:56:21] <cody___> i have a problem: when i connect my beagleboard to my stereo i get a deep noise
  • [17:56:42] <cody___> theres no noise with headphones
  • [17:56:42] <muriani> sounds like a ground loop
  • [17:56:45] <cody___> ye
  • [17:56:49] <cody___> but why?
  • [17:57:01] <cody___> how do i prevent that?
  • [17:57:10] <muriani> you can get a filter for it
  • [17:57:26] <muriani> but I'm not sure why you'd have one... are you using a grounded plug for the beagle?
  • [17:57:40] <cody___> hm... i guess not
  • [17:57:49] <muriani> hm
  • [17:57:50] <av500> ah, BB has no "ground lift" switch :-)
  • [17:57:56] <muriani> shouldn't have that then
  • [17:58:09] <av500> you can also type over the ground on your stereo and die like a rockstar...
  • [17:58:12] <av500> type->tape
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  • [18:25:38] <av500> prpplague: ping
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  • [18:32:56] <new_new> hello
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  • [18:35:45] <new_new> I have too many disk errors with a 2.5"USB HD connected to the BeagleBoard
  • [18:35:52] <new_new> with the standar "Y" USB cable through a DLINK DUB-H4 powered USB Hub.
  • [18:35:53] <new_new> Running Angstrom distribution booted from SD.
  • [18:35:57] <new_new> Of course the same HD coneted to a desktop-PC works fine.
  • [18:36:01] <new_new> Is there any body with similar problem ?
  • [18:36:25] <new_new> Thanks
  • [18:39:36] <av500> on otg or ehci?
  • [18:39:51] <new_new> otg
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  • [18:45:04] <djlewis_> goodday
  • [18:45:50] <av500> djlewis_: gm
  • [18:46:34] * djlewis_ has watched 700MD movies with 2.5" HD on powered hub on EHCI conn.
  • [18:46:41] <djlewis_> 700MB
  • [18:47:09] <djlewis_> and no hickups...
  • [18:47:11] <av500> I thought you watched 700 episodes of trapper john MD...
  • [18:47:18] <djlewis_> :P
  • [18:47:39] <djlewis_> you sound older than me av500
  • [18:47:40] <av500> ah, only 151 episodes...
  • [18:48:04] <av500> my granma liked to watch that :-P
  • [18:49:23] <inio> so the OMAP3 on the beagle should have no trouble playing back 320x240 MPEG4 at 30fps, right?
  • [18:49:29] <djlewis_> hehee, yeah, sure, whatever you say ;)
  • [18:49:30] <av500> nope
  • [18:50:41] <inio> yeah, seems like if it can just barely do 720p with some optimizations, QVGA should barely make it break a sweat ;)
  • [18:51:36] <cody___> hm pal mpeg2 captured from dvb-s doesnt play smooth
  • [18:51:43] * jkridner|work (n=a0321898@nat/ti/x-lciluruwrwzsduqs) Quit (Remote closed the connection)
  • [18:51:45] <cody___> :(
  • [18:51:53] <av500> using what?
  • [18:52:04] <cody___> a 720x400 xvid plays fine though
  • [18:52:07] <cody___> using mplayer
  • [18:52:15] <cody___> on the angstrom demo image
  • [18:52:50] <av500> on X11?
  • [18:52:54] <cody___> yes
  • [18:53:14] <cody___> is there a smarter way?
  • [18:53:21] <av500> afaik, all the standard linux playback solutions still do a copy at the end...
  • [18:54:01] <cody___> and which doesnt?
  • [18:54:24] <cody___> it seams to do scaling in hardware at least
  • [18:54:30] <av500> (if the color conversion is part of the copy it should not hurt that much tough..)
  • [18:54:35] <av500> ok
  • [18:55:03] <cody___> it makes no difference in cpu usage if i play in an window or fullscreen
  • [18:55:14] <av500> I have not benchmarked raw MPE2 decoding speed using arm only
  • [18:55:29] <av500> mplayer has a benchmark mode, no?
  • [18:55:35] <cody___> dont know
  • [18:55:39] <av500> man mplayer
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  • [18:56:01] <cody___> well, mplayer manpage sucks
  • [18:56:06] <cody___> google will work better
  • [18:56:31] <av500> benchmark: Prints some statistics on CPU usage and dropped frames at the end of playback. Use in combination with -nosound and -vo null for benchmarking only the video codec.
  • [18:56:35] <cody___> -benchmark
  • [18:56:42] <av500> man was faster...
  • [18:57:03] <cody___> just because you know how to seek there
  • [18:57:08] <djlewis_> mplayer cmd line help is easier to sort through than man page.
  • [18:57:42] <av500> djlewis_: yes, but it does not list -benchmark...
  • [18:58:01] <av500> mru: did your neon magic also help mpeg2?
  • [18:58:03] <sethn> Anyone know how to start a getty/login on the USB OTG port when it is functioning in Device mode?
  • [18:58:05] <av500> (yet)
  • [18:58:29] <sethn> So the USB OTG port can be used for console access instead of requiring a second serial cable (which in the case of my laptop means both my usb ports are occupied)
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  • [18:58:46] <av500> 2nd serial?
  • [18:58:48] <new_new> im far from this, i tested with "badblocks" fom e2fsprogs-badblocks_1.38
  • [18:59:02] <new_new> badblocks -w /dev/sda1 8010 8000; # finds more than une bad block and different in sucessive runs
  • [18:59:16] <new_new> sorry une -> one
  • [18:59:58] <sethn> av500: Well, one of the USB cords is effectively a "power connector" in the current setup
  • [19:00:06] <sethn> av500: Plus an RS232 <-> USB adapter
  • [19:00:07] <djlewis_> -benchmark, one of those Doom 2 cmds as I recall.... ;)
  • [19:00:09] <fpausp> hi, djlewis !
  • [19:00:26] <sethn> av500: Ideally, I'd like to ditch the adapter and just have getty/login on the USB OTG itself
  • [19:00:29] <cody___> hm -benchmark does nothing for me
  • [19:00:35] <cody___> there are no stats
  • [19:00:35] <sethn> av500: Which... seems like a vaguely achievable goal
  • [19:00:50] <av500> sethn: yes, that can be done
  • [19:01:00] <sethn> av500: What's the word I should search for?
  • [19:01:08] * sethn happy to RTFM if he was sure what to call the M
  • [19:01:20] <djlewis_> yo! fpausp
  • [19:02:08] <fpausp> do you remember my big problems last night, i got it working this day
  • [19:03:03] <av500> sethn: e.g. http://elinux.org/U-boot_musb_gadget_support
  • [19:03:51] <djlewis_> uh... I slept since then...
  • [19:04:07] * jrmuizel (n=jrmuizel@mozca02.ca.mozilla.com) Quit ()
  • [19:04:34] <sethn> av500: cool! thanks@
  • [19:05:16] <fpausp> what country are you from ?
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  • [19:06:34] <djlewis_> fpausp: hmmm, that should make a diff in my recall? ;)
  • [19:08:13] <fpausp> :-)
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  • [19:10:16] <djlewis_> fpausp: either way, I am glad you got it going, whatever it was.
  • [19:10:32] <mru> av500: mpeg2 is neon optimised in ffmpeg/mplayer
  • [19:10:47] <av500> good
  • [19:10:54] <fpausp> dont ask me, the angstr??m-test is working at the moment.
  • [19:10:54] <av500> not enough :-)
  • [19:11:50] <mru> the problem is probably the less-than-stellar xv driver
  • [19:12:13] <mru> it is in dire need of some neon love
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  • [19:15:24] <fpausp> for the 2nd step i like to test ubuntu
  • [19:16:06] <prpplague> av500: pong
  • [19:16:16] <djlewis_> i find fb driver faster that xv with my webcams.
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  • [19:40:01] <djlewis_> fpausp: hmmm. dont count on Ubuntu being as far along as Angstrom..
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  • [20:22:35] <superdug> Beagle(ers): I'm a bit fuzzy on the HDMI, DVI, and VGA specs
  • [20:22:57] <superdug> so I ask ... http://www.dinodirect.com/Tronixin-6F-1-8-Meters-HDMI-Male-to-VGA-HD-15-Male-Cable/AFFID-15.html will that connect a VGA monitor to the beagleboard rev C3 ?
  • [20:23:30] <_av500_> no
  • [20:23:42] <superdug> so the HDMI on the beagle only sends the digital signal?
  • [20:23:47] <_av500_> yes
  • [20:24:17] <superdug> so I'd need a "translator" to go digital --> analog to use a VGA monitor
  • [20:24:21] <_av500_> no
  • [20:24:29] * j_ack (n=j_ack@p57A429D9.dip0.t-ipconnect.de) Quit ("Verlassend")
  • [20:24:43] <_av500_> for the price of that u get a digital monitor...
  • [20:24:50] <djlewis_> yep
  • [20:25:11] <_av500_> and give the vga to your little brother, makes him happy too
  • [20:25:56] <djlewis_> hmmm, I have a half dozen VGA from 15" to 21`" i'll make a sweet deal on :)
  • [20:26:26] * fpausp (i=5b739a94@gateway/web/freenode/x-lfeypxidipllyxah) Quit (Ping timeout: 180 seconds)
  • [20:26:46] <_av500_> you pay me to take them?
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  • [20:26:57] <djlewis_> you pay freight;)
  • [20:28:19] <_av500_> just put em putside, ill pick them up...
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  • [20:29:55] <prpplague> superdug: most lcd's these days support DVI-D, you can purchase a HDMI to DVI cable or adapter that will allow you to easily connect to a lcd panel's DVI connector
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  • [20:52:32] <superdug> prpplague: I understand that, it's just we have a VGA device in stock I was hoping to use
  • [20:53:09] <_av500_> superdug: unless this is a very special device it makes no sense to look for a dvi to vga converter box
  • [20:53:47] <superdug> _av500_: yeah my time devoted was googling HDMI to VGA and asking in here :-)
  • [20:54:23] <_av500_> mru: why does xv driver need neon? it only needs to give mplayer/lavc a DMA buffer to render into...
  • [20:54:24] <superdug> I know that DVI on some video cards carries the analog signal making DVI -> VGA possible
  • [20:54:35] <_av500_> superdug: yeah, on most gfx cards
  • [20:54:40] <mru> _av500_: it does yuv420 to yuv422 conversion
  • [20:54:55] <_av500_> but then, these traditiotnally have analog out
  • [20:55:01] <superdug> right
  • [20:55:11] <mru> it can't give direct framebuffer
  • [20:55:23] <mru> the design doesn't allow that
  • [20:55:41] <_av500_> mru: does not matter, if the yuv conv is the copy step at the same time then its ok...
  • [20:55:54] <mru> the xv driver always has to copy
  • [20:55:56] <superdug> _av500_: thinking outloud ... couldn't I go s-video -> rgb rca component -> vga ?
  • [20:56:00] <mru> so it makes sense to do the conversion there
  • [20:56:09] <mru> but the current code is really slow
  • [20:56:10] <_av500_> mru: in this cse yes
  • [20:56:42] <_av500_> its wasted cycles if u have a dsp codec that delivers in 422 already..
  • [20:57:23] <mru> if you decode on the dsp you should arrange for it to output directly to the framebuffer of course
  • [20:57:25] <_av500_> superdug: the quality would most likely suck
  • [20:57:50] <_av500_> mru: to a DMA buffer, that u then pass to DSS...
  • [20:57:51] <mru> suck doesn't even begin to describe it
  • [20:58:12] <superdug> _av500_: I think you could still pump 640x480
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  • [20:59:03] <_av500_> ignoring mru, yes :-)
  • [20:59:14] <superdug> in the interim, is the RS232 port on the beagle recognized as a ttyS# ? because a console term is all I need
  • [20:59:22] * mru does not like being ignored
  • [20:59:49] * _av500_ unignores mru
  • [21:00:03] <superdug> just assign agetty at boot
  • [21:00:15] <_av500_> yes
  • [21:00:35] <superdug> heh .. that shall do
  • [21:00:37] <felipec> well, in theory the DSP should write to the fb, but there's no API that allows that
  • [21:00:49] <mru> ~lart ti
  • [21:01:07] <felipec> Xv and linux kernel would need to be modified
  • [21:01:27] <_av500_> once u teach v4l2 to accept user pointers, it works fine (sans X11 of course)
  • [21:02:01] <felipec> _av500_: huh? you mean v4lsink?
  • [21:02:21] <_av500_> not sure what that is
  • [21:03:22] <felipec> v4l2 for rendering
  • [21:03:31] <_av500_> and the dsp should not write directly to the fb, you'd still want to be able to queue a few frames and play them out at the right time stamps..
  • [21:04:32] <_av500_> ah, v4lsink is gst...
  • [21:05:13] * gt1 (n=a0868890@nat/ti/x-pltbwxivxutsburv) Quit (Remote closed the connection)
  • [21:05:31] <_av500_> it seems i need to learn vala now...
  • [21:05:42] <felipec> _av500_: why would you want to queue them? you just need to wait at the right places
  • [21:06:16] <_av500_> so u want to waste dsp cycles waiting to show a frame?
  • [21:06:21] <djlewis_> superdug: you can xvnc to beagle too.
  • [21:06:34] <djlewis_> use your computer for display with some lag.
  • [21:08:15] <felipec> _av500_: no, you allocate a big enough buffer for fb (say twice the framesize) and write to the 2nd buffer while the 1st finish rendering
  • [21:08:47] * __alanc__ (n=a-campbe@nat/ti/x-okmxejdfmzyeattx) Quit ()
  • [21:08:50] <robclark> fyi, with v4l2sink, you could, for example, allocate 4 buffers... have the decoder decode into them, and then render them at the right time..
  • [21:08:51] <_av500_> felipec: that is a 2 buffer queue, now I want N
  • [21:09:04] <robclark> userptr would be problematic due to DSS not having it's own mmu
  • [21:09:30] <robclark> but I can today get zero copy from decoder on dsp to hw overlay
  • [21:09:33] <_av500_> robclark: yes, it assumes u have enuf dma capable memory, but u have that anyway due to the dsp, so its free
  • [21:09:37] <felipec> _av500_: well if the fb can handle it why not? but why would you want more than 2?
  • [21:10:01] <_av500_> felipec: because you might have a decoder with a high peak load
  • [21:10:17] <_av500_> ask mru how many frames he buffers to get a smooth BBB at 720p...
  • [21:10:18] <robclark> yes.. it does require reserving contiguous memory at boot time... I wish linux had some way to push pages out to swap to make physically contiguous memory available long after boot
  • [21:10:32] <lcuk> felipec, on the old omap2420 couldnt the dsp write directly to the SRAM screen buffer?
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  • [21:10:46] <_av500_> robclark: one day, until then set it aside at boot and dont worry :-)
  • [21:10:55] <robclark> yup
  • [21:11:00] <superdug> djlewis_: I'd use nomachine before xvnc
  • [21:11:08] <felipec> _av500_: if the DSP has a peak load more buffers for rendering aren't going to help
  • [21:11:11] <robclark> but one day in the future we won't have to care about it anyways
  • [21:11:25] <_av500_> if the avg load is higher than ms/frame then no
  • [21:11:36] <_av500_> if the peak load is high for a few frames, yes
  • [21:11:48] <robclark> not all frames take the same amount of time to decode
  • [21:11:48] <_av500_> few being reasonable
  • [21:11:50] <mru> I use about 200MB worth of buffers
  • [21:11:54] <_av500_> mru: thx
  • [21:11:57] <robclark> yikes!
  • [21:12:05] <mru> I buffer in yuv420
  • [21:12:19] <mru> convert to 422 directly into the framebuffer
  • [21:12:25] <robclark> yeah... but still yikes!
  • [21:12:27] <mru> which is double-buffered
  • [21:12:36] <robclark> this is for 720p?
  • [21:12:36] <_av500_> which makes sense for an arm based decoder
  • [21:13:00] <_av500_> until TI teaches the dsp top use its MMU, we have to give it DMA capable mem
  • [21:13:01] <felipec> lcuk: I'm not familiar with omap2420 =/
  • [21:13:15] * lcuk nods
  • [21:13:16] <mru> once upon a time, I had a slow machine but nevertheless wanted to play films
  • [21:13:23] <mru> so I buffered about 1000 frames in main ram
  • [21:13:25] <robclark> _av500_: DSS needs physically contiguous memory to program the hw overlay with..
  • [21:13:37] <djlewis_> superdug: ya been there, huh, it works better than no dvi and s-video.
  • [21:13:41] <mru> ran an async dma transfer to pci video ram which could hold about 30 frames
  • [21:13:42] <lcuk> was a theoretical thing anyway - the 8x0 never used that ondie framebuffer memory
  • [21:14:06] <_av500_> robclark: yes, DSS needs that, but the DSP has the same MMU as the arm, so it could run on user buffers...
  • [21:14:28] <mru> the dsp has its own mmu with the same capabilites as the arm's
  • [21:14:28] <_av500_> userspace
  • [21:14:37] <mru> it doesn't automatically share the mappings
  • [21:14:43] <_av500_> it just needs some love :-)
  • [21:14:48] <robclark> tru... but best efficiency would be DSP decode directly into buffer that DSS overlay is programmed to display... zero copy from decode to pixels on the screen
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  • [21:14:53] <mru> keeping the two in sync takes some effort
  • [21:14:58] <_av500_> robclark: thats how i handle it
  • [21:15:02] <mru> the simplest is probably to lock the pages
  • [21:15:24] <_av500_> u can assume that u dont free what the dsp decodes into...
  • [21:15:48] <robclark> so even if DSP doesn't require physically contiguous, DSS does.. (but then maybe I misunderstand the point about DSP MMU..)
  • [21:15:59] <linuxpenguin> Has anyone here tried to get a USB touchscreen (DVI or SVIDEO/RCA) working with the Beagleboard? I'm having quite a bit of trouble getting the USB driver to work with the 2.6.29 kernel...
  • [21:16:03] <_av500_> robclark: no, in that case u are right
  • [21:16:09] <_av500_> but dsp can be used for other stuff
  • [21:16:21] <robclark> gotcha
  • [21:17:15] <_av500_> robclark: u are TI?
  • [21:17:23] <robclark> yup
  • [21:17:46] <_av500_> forgot your "_" wings :-)
  • [21:18:09] <robclark> ?? did I miss the memo?
  • [21:18:31] <_av500_> obviously
  • [21:18:58] <linuxpenguin> Nobody has tried to get an LCD touchscreen working with the beagleboard? Hmm...
  • [21:19:20] <prpplague> linuxpenguin: a number of people have
  • [21:19:39] * prpplague looks over at 5 beagleboards with LCD's and touchscreens
  • [21:19:55] <linuxpenguin> I see--any idea what kernel number they are running? Also, any idea what USB driver they use?...
  • [21:20:26] <prpplague> 1) 2.6.29 2)they are not connected via USB
  • [21:20:51] <linuxpenguin> Oh, they are serial devices then?
  • [21:21:01] <_av500_> no, they are parallel
  • [21:21:06] <_av500_> connected to the omap3 lcd port
  • [21:21:11] <_av500_> lcd pins
  • [21:21:17] <_av500_> via some "glue"
  • [21:21:22] <prpplague> linuxpenguin: uh no, they are connected to the lcd controller on the omap3
  • [21:21:36] <linuxpenguin> I see. Aftermarket modification or were you able to get that connector board somewhere?
  • [21:21:39] <felipec> _av500_: coming back to the queuing buffers... you only need to do that if for some reason the rendering is slow, and DSP is too fast
  • [21:22:20] <felipec> _av500_: but if that happens you'll end up dropping those decoded frames anyway until the rendering normalizes
  • [21:22:30] <_av500_> felipec: nope
  • [21:22:42] <_av500_> assume you need ~35ms per frame for 25fps
  • [21:22:47] * edufelipe (n=edufelip@189.4.72.143) Quit (Read error: 110 (Connection timed out))
  • [21:22:53] <_av500_> then suddennly a few frames need 45ms
  • [21:23:15] <_av500_> if u decode only every 40ms, you have to drop frames
  • [21:23:33] <_av500_> if u have a queue, u can survive a few 45ms frames and recover with 35ms ones...
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  • [21:24:52] <felipec> _av500_: what you mean 45ms? the DSP decoder is taking that long? or is it the video rendering?
  • [21:26:25] <robclark> felipec: for 720p, I think it can only be assumed that the DSP keeps up on average.. reference frames can take a bit too long to survive perfectly without a queue.. (just AFAIK..)
  • [21:26:32] <robclark> lower resolutions it should be able to keep up
  • [21:26:56] <_av500_> felipec: yes, the dsp. imagine 35, 35, 35, 45, 45, 45, 45, 35, 35 ,35 ...
  • [21:27:07] <_av500_> as decoding time per frame
  • [21:28:04] <robclark> well, except those 35's would be a bit lower than 35... in average it keeps up..
  • [21:28:22] <_av500_> robclark: yes of course, peak vs average
  • [21:28:31] <felipec> _av500_: yes, if the DSP takes 10 extra ms to come up with a buffer what do you do in the mean-time that an extra buffer would help?
  • [21:29:08] <_av500_> while the frames take 35 ms to decode, you can queue up a few buffers as they are only consumed ever 40ms
  • [21:29:21] <robclark> 4 buffers seems to be good on omap3
  • [21:29:27] <_av500_> then, when u need 45 or even 50ms per frame, you can still output a frame every 40ms...
  • [21:30:03] <_av500_> of course, if you are > 40ms on average, you cannot recover that
  • [21:30:21] <_av500_> unless you queue up a signifacant part of the movie at start
  • [21:30:28] * quist (i=55512753@gateway/web/freenode/x-rmvbmkdyfeyyprsg) has joined #beagle
  • [21:30:33] <_av500_> which u cant
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  • [21:33:44] <felipec> _av500_: yeah, it should good in theory, but in practice that would require at least an extra memory copy, which will probably delay the next 45ms buffer, not to mention all the operations needed for cache coherency
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  • [21:34:37] <_av500_> felipec: no memcpy, the buffers are dma, so the dsp can write to them and the DSS can read from them
  • [21:36:05] <_av500_> the copy is needed by using e.g. the fb that does not allow to pass in a pointer...
  • [21:36:09] <robclark> zero copy, zero copy, zero copy.... only problem is you can't use xvimagesink, because if you use xvideo how it was intended, it forces a copy
  • [21:36:17] <_av500_> robclark: yep
  • [21:36:24] <robclark> but you can kinda hack around that... which is how xf86-video-v4l does..
  • [21:36:26] <felipec> _av500_: huh? AFAIK DSS cannot read from random pages
  • [21:36:43] <robclark> nope, but it can read from pages allocated by v4l2 driver
  • [21:36:49] <_av500_> felipec: thats why I said DMA capable buffers
  • [21:36:53] <robclark> and those pages can be passed to dsp to decode into
  • [21:36:54] <_av500_> contigous
  • [21:37:35] <_av500_> DSP -> DMA buffer -> DSS
  • [21:37:39] <_av500_> no copy
  • [21:37:46] <felipec> _av500_: who is going to provide those memory contigous buffers?
  • [21:37:55] <_av500_> well, me of course :-)
  • [21:38:04] <_av500_> or what ti calls cmem
  • [21:38:12] <_av500_> in the dsplink worls
  • [21:38:14] <_av500_> in the dsplink world
  • [21:38:21] <_av500_> dont kwow what bridge does..
  • [21:38:42] <felipec> ah, I was thinking on the DSP bridge
  • [21:38:58] <_av500_> youre the bridge expert
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  • [21:39:40] <_av500_> or does bridge use the dsp mmu to write to userspace?
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  • [21:40:17] <felipec> _av500_: yeah
  • [21:40:20] <robclark> gstv4l2sink does ioctl(REQBUFS), then a loop of ioctl(QUERYBUF) and mmap()... the v4l2 driver returns the buffers from the mmap syscall.. and then something in dspbridge maps them to dsp addr space... but I'm pretty sure dspbridge doesn't require physically contiguous (although don't know the details), since it can seem to handle any random bitstream input buffer we throw it
  • [21:40:31] <felipec> all memory is coming from user-space
  • [21:40:41] <robclark> nope.. mmap() from v4l2 driver
  • [21:41:05] <robclark> v4l2 display driver on omap3 could not use userptr (user-space malloc()'d buffers)
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  • [21:41:16] <robclark> (due to lack of mmu)
  • [21:41:31] <felipec> robclark: that's transparent for the bridge, it anyway needs to grab all the pages
  • [21:41:38] <_av500_> robclark: it can use cmem
  • [21:41:42] <_av500_> robclark: it can use cmem'd buffer nicely
  • [21:42:00] <felipec> cmem is a dsplink concept
  • [21:42:06] <robclark> felipec: yeah.. it doesn't matter that they are contiguous or not to dspbridge... that only matters to DSS
  • [21:42:11] * robclark has no idea what cmem is
  • [21:42:11] <_av500_> ok, so bridge uses the dsp mmu to mimic linux mappings, nice
  • [21:42:17] <robclark> yup
  • [21:42:32] <_av500_> which put you in WTBU :-)
  • [21:42:35] <_av500_> puts
  • [21:42:40] <robclark> yup
  • [21:42:59] * _av500_ calls for help from PSP guys...
  • [21:43:04] <felipec> wtbu?
  • [21:43:10] <robclark> wireless
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  • [21:43:18] <_av500_> terminals business unit
  • [21:43:55] <robclark> (a name that always makes me think of wireless bus stations... but I digress)
  • [21:44:02] <felipec> ah... well, I just wish there was at least one bridge upstream (linus upstream)
  • [21:44:25] <_av500_> robclark: but if the mmap() returns user mapped pages, how du you feed them to DSS?
  • [21:44:44] <robclark> well.. there eventually will be only one... but it will be in omap4 timeframe.. (AFAIK)
  • [21:44:56] <robclark> mmap() is implemented by the v4l2 driver... it isn't returning user mapped pages
  • [21:45:00] * _av500_ forgor the nice code name for that
  • [21:45:08] <_av500_> forgot
  • [21:45:25] <robclark> if fact there is no way to remap arbitrary pages from one process to another.. which is why xvideo requires a memcpy
  • [21:45:31] <_av500_> ah, right, MadMax
  • [21:46:09] <_av500_> robclark: so does it return a buffer that DSS can read from?
  • [21:46:47] <robclark> yes.. v4l2 driver allocates the buffer.. and returns it to userspace thru the mmap() syscall..
  • [21:47:04] <robclark> and in fact the v4l2 driver pre-reserves a bunch of space to ensure it can get physically contiguous memory...
  • [21:47:04] <_av500_> and it is contigous?
  • [21:47:09] <_av500_> ah
  • [21:47:17] <robclark> which is a bit ugly, but linux gives no other option at the moment
  • [21:47:27] <_av500_> well, then u do the same as me...
  • [21:47:43] <_av500_> I set mem aside for cmem, you block it in v4l
  • [21:47:45] <robclark> (I started to look at the mm code in linux kernel... wow, a fun read)
  • [21:47:51] <robclark> yup, basically
  • [21:48:39] <felipec> and I use omapfb
  • [21:48:41] <_av500_> so, v4l could just as much take cmem userptrs (which it does here..)
  • [21:48:50] <felipec> through Xv
  • [21:48:59] <robclark> omapfb does, I guess the same thing... reserves some memory at boot..
  • [21:49:14] <robclark> but if you use via Xv, then you allocate userspace buffers.. using malloc() or shmat()
  • [21:49:17] <robclark> and memcpy to the fb
  • [21:49:23] <_av500_> yep
  • [21:49:54] <robclark> I wish there was some option for zero-copy Xv.. but right now I don't see how
  • [21:51:23] <_av500_> dont use X:-)
  • [21:51:37] * _av500_ hides
  • [21:52:27] <robclark> X is somewhat cool.. considering it's age.. but some aspects were not designed with omap3 in mind ;-)
  • [21:53:53] <_av500_> but does X need to know at all about video playback? why not show the video on top using e.g. v4l2
  • [21:54:17] <_av500_> or have X create a transparent region and put video underneath...
  • [21:55:40] <_koen_> robclark: use omapdmaifbsink, that gets you an x11 aware gst sink that has zero-copy capabilities
  • [21:56:03] <_av500_> ah, PSP to the rescue :-)
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  • [21:57:14] <_koen_> _av500_: mostly brijesh :)
  • [21:59:54] <robclark> yeah, X should be aware of video.. if you want to do something more interesting than just full screen video all the time.. I'll have to look at omapfmaifbsink. But just because the buffer passing doesn't go thru X doesn't mean X can't be aware of the overlay..
  • [22:00:47] <_av500_> yes, moving the window in X should move the overlay of course, so they have to talk to eahc other...
  • [22:01:20] * craw (n=craw@77.237.253.46) Quit (Read error: 104 (Connection reset by peer))
  • [22:01:24] <_koen_> "Hello mr X11, don't touch (20,100),(660,580)"
  • [22:01:55] <_av500_> _koen_: its an overlay, it can write behind it what it wants, no? :-)
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  • [22:02:06] <robclark> well... you ideally want better than that... X11 should be setting the clipmask, so you can overlay bitmap UI controls, or draw face-detect boxes, or other such stuff
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  • [22:02:24] <robclark> (yeah, overlay or underlay)
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  • [22:02:59] <_av500_> robclark: clipmask sounds too hard, alpha is much softer...
  • [22:03:00] <robclark> AFAIK for android it is an underlay (but that is just what I heard 2nd hand.. I don't work on android)
  • [22:03:20] <robclark> the clip plane could be more than 1bpp
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  • [22:03:25] <felipec> _koen_: that's only for dsplinky stuff
  • [22:03:28] <robclark> you could have an alpha mask..
  • [22:03:37] <_av500_> yeah, nobody likes to admit that...
  • [22:03:38] <felipec> there's omapfbsink for the rest of the world :)
  • [22:03:49] <_av500_> I WORK ON ANDROID!
  • [22:03:53] <_av500_> there, I sadi ti
  • [22:03:57] * bd (i=46744f3b@gateway/web/freenode/x-zpzlsvhrdhwuaiwh) Quit (Client Quit)
  • [22:03:58] <_av500_> said it
  • [22:04:00] <_av500_> duh
  • [22:04:08] <robclark> that's ok.. the first step is to admit it ;-)
  • [22:04:18] <_av500_> now, who can help me :-)
  • [22:04:49] <_av500_> robclark: yes, alpha mask is nice
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  • [22:05:44] * _av500_ thanks TI it is not 3bit any more...
  • [22:06:11] <robclark> btw _av500_, what were you trying to figure out in the first place? (but if it is something dsplinky, I'm probably no help at all)
  • [22:07:04] <_av500_> err....
  • [22:07:25] <_av500_> a user reported that playing D2 MPEG2 with mplayer on the A8 was not realtime
  • [22:07:43] <_av500_> so we started looking for the cuplrit
  • [22:08:23] <robclark> mplayer... that's not very dsp{link,bridge}y
  • [22:08:34] <_av500_> no: 19:11 < mru > the problem is probably the less-than-stellar xv driver
  • [22:08:41] <_av500_> thats where it started :-)
  • [22:08:43] <robclark> ahh..
  • [22:09:30] <robclark> ic.. well, try omapfb, or v4l2, depending on your kernel.. for a beagleboardish kernel, omapfb is a good bet.. for old omapzoomy kernel, v4l2 is a good bet..
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  • [22:10:41] <_av500_> thats for the BB folks to find out :-)
  • [22:10:41] * gt1 (n=a0868890@nat/ti/x-rokjdbfbpixipkzs) Quit (Remote closed the connection)
  • [22:10:52] <robclark> or, xf86-video-omapfb xv driver.. assuming it is some color format that DSS can handle (which is probably part of the conversion I overlooked)
  • [22:11:29] <robclark> well.. I'd suggest starting by trying anything other than xv ;-)
  • [22:12:37] <Crofton> http://www.youtube.com/watch?v=msitpVHrFoc
  • [22:12:43] <Crofton> this is hystericak
  • [22:15:15] <robclark> ok, bbl
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  • [22:24:20] <prpplague> FYI for anyone interested, Zippy's will be available for order and shipping tomorrow
  • [22:24:48] <nullpuppy> Zippy's?
  • [22:25:06] <XorA|gone> prpplague: me old buddy maty friend....... :-)
  • [22:25:20] <prpplague> XorA|gone: hehe
  • [22:25:30] <prpplague> nullpuppy: http://www.tincantools.com/product.php?productid=16147&cat=0&page=1&featured
  • [22:26:00] <nullpuppy> ah, ok. neato. awesome.
  • [22:26:25] <prpplague> XorA|gone: hehe, you hankering for one?
  • [22:27:21] <XorA|gone> prpplague: I probably need a not B6 beagle first I guess
  • [22:27:37] <prpplague> XorA|gone: naw, it works with any beagle rev
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  • [22:43:23] <felipec> mru: I'm doing a bit for profiling of ffmpeg's vorbis decoder and it seems ff_vorbis_floor1_render_list and vorbis_floor1_decode are used the most
  • [22:43:29] <felipec> does that make sense?
  • [22:44:02] <mru> sounds familiar
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  • [22:46:42] <_av500_> Crofton: I try to remember when such large device were en vogue....
  • [22:46:58] <Crofton> there is an archos device ....
  • [22:47:14] <_av500_> thats the cool one :-)
  • [22:47:46] <_av500_> would u believe they cram fans into the most lil ones?
  • [22:47:53] <felipec> mru: ok, just making sure... in case you are interested in the details: http://people.freedesktop.org/~felipec/op-vorbis-3.png
  • [22:47:55] <_av500_> we tested a few,,,
  • [22:48:50] <Crofton> heh
  • [22:49:50] <_av500_> thx for the link, will make CEO happy :-)
  • [22:50:38] <Crofton|work> we'll have to suggest jason walk around esc and look for fans in atom devices
  • [22:51:15] <_av500_> maybe they have that under control by now, but 6mo ago, nope
  • [22:51:47] <_av500_> Crofton: if u want to preorder.... :-)
  • [22:51:49] <mru> Crofton|work: and put some gum in any he finds
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  • [22:52:22] <_av500_> just hold it for a few min, blocking the fan...
  • [22:54:30] <_av500_> mru: get rid of avcodec_decode_audio3, it takes 34% of the cpu... :-)
  • [22:56:26] <felipec> heh, it's not % of CPU, it's % of samples
  • [22:56:38] <_av500_> felipec: :-)
  • [22:56:41] <mru> same thing, no?
  • [22:57:49] <felipec> for the whole system maybe, but this is only for one process
  • [22:58:10] <mru> what are you counting?
  • [22:58:32] <felipec> CPU cycles
  • [22:58:51] <mru> so # of samples is proportional to cpu time
  • [22:59:36] <felipec> yes
  • [23:01:25] <_av500_> so when playing vorbis, u spend 34% in the actual decoder and the rest where?
  • [23:01:52] <mru> in the framework of course
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  • [23:02:06] <_av500_> ah, how could I oversee that...
  • [23:02:13] <_av500_> overlook?
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  • [23:02:38] <felipec> yeah, in GStreamer
  • [23:02:54] <mru> doesn't sound very efficient
  • [23:03:00] <_av500_> ok, miss that
  • [23:03:23] <_av500_> u can save 30% by having a decoder that takes no time at all...
  • [23:03:50] <felipec> if I construct a gst pipeline manually it's much more efficient
  • [23:05:05] <felipec> the main problem is playbin which autoplugs all the elements and it's adding some extra baggage that is just wasting the CPU
  • [23:05:47] <felipec> queues where not needed and so on... it's the first time I look at audio pipelines, and it looks horrible, but a video pipeline doesn't look so bad
  • [23:05:48] <_av500_> felipec: whats the tool to have that (nice) png?
  • [23:06:01] <felipec> _av500_: gprof2dot
  • [23:06:06] <_av500_> thx
  • [23:06:15] <mru> you use gprof?
  • [23:06:24] <felipec> _av500_: http://code.google.com/p/jrfonseca/source/browse/trunk/gprof2dot/gprof2dot.py
  • [23:06:26] <mru> that's so last century
  • [23:06:41] <felipec> mru: no, oprofile, gprof2dot can use different input formats
  • [23:06:52] <mru> ah, good then
  • [23:07:21] <felipec> it's the only sensible way I've found to profile... oprofile with callgraphs, and gprof2dot
  • [23:07:52] * _av500_ senses work for the A3 color laser...
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  • [23:19:58] * djlewis_ missed a lot in the last hour, will catch up later
  • [23:20:17] * djlewis_ is heading home now, bbl...
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