[00:09:52] <kaio> hi how large for microcard if android/ubuntu is going to be installed? (for bbxm)
[00:10:03] <kaio> how large recommended
[00:10:19] <kaio> considering between 8gb and 16gb
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[07:34:38] <perter-jim> hi I hava a question
[07:34:40] <perter-jim> W/AudioRecord( 4885): obtainBuffer timed out (is the CPU pegged?) user=0002ff80, server=0002ff80
[07:35:45] <perter-jim> record latency?
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[10:50:49] <ankur_vjy> hello
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[12:11:23] <JohnMatt> Hello, I'm trying to use a usb webcam with sound and I'm getting bandwidth errors when tryning to capture sound and audio at the same time
[12:11:33] <JohnMatt> What could I do?
[12:11:45] <JohnMatt> Using beagleboard-xm
[12:11:49] <av500> sound and audio at the same time?
[12:12:12] <JohnMatt> yes
[12:13:37] <JohnMatt> It's an usb webcam with incorporated microphone
[12:14:13] <JohnMatt> If I just try to record video, iti s fine, but when i try to record audio+video from it, i get bandwidth errors
[12:14:14] <thurbad> slow down the frame rate or decrease the resolution if it will let you
[12:14:54] <JohnMatt> the resolution i am using is 320x240 which is low already
[12:15:01] <JohnMatt> framerate 12
[12:15:20] <JohnMatt> i will try to decreae framerate
[12:15:23] <thurbad> :/
[12:15:53] <JohnMatt> do you think the problem could be im also using a usb wireless stick?
[12:16:01] <thurbad> my frankenomapfbplayer finally has audio and video synched properly when pausing
[12:16:05] <thurbad> \o/
[12:16:39] <thurbad> if you've got much traffic on it, probably
[12:17:17] <thurbad> try plugging into ethernet and see if it stabilizes
[12:17:22] <JohnMatt> normally it would have as much traffic as i stream outside, around 300 kbps
[12:17:42] <JohnMatt> i also tried to remove the ethernet driver to see if it works better
[12:17:49] <JohnMatt> but no luck
[12:19:17] <JohnMatt> i still get this error when using 1 FPS
[12:19:53] <JohnMatt> someitmes it comes from the webcam videodriver, others from alsa...but both related to usb bandwidth issues
[12:19:59] <JohnMatt> trying ethernet....
[12:20:06] <thurbad> did you unplug the wireless adapter?
[12:20:20] <JohnMatt> i will do it now one sec
[12:23:44] <thurbad> oddly the a/v sync problems went away when I went with a simpler sync approach... occam's razor I suppose
[12:23:54] <JohnMatt> i got several warnings like
[12:23:55] <JohnMatt> [ 54.624755] zc3xx: probe 2wr ov vga 0x0000 [ 56.267242] gspca: bandwidth not wide enough - trying again
[12:24:05] <JohnMatt> but it is recording
[12:24:16] <JohnMatt> both audio and video
[12:25:46] <av500> thurbad: approahc being?
[12:26:46] <JohnMatt> isnt there anything i can do to use my wireless stick and the webcamera?
[12:27:12] <thurbad> I finally just added a semaphore to signify thevideo buffer was initialized and a second for when it's paused
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[12:28:03] <JohnMatt> maybe iwconfig wlan0 rate 1M helps?
[12:28:16] <thurbad> occasionally pausing the audio midstream didn't work because it was in the process of getting the next audio chunk rather than actively playing one
[12:31:54] <thurbad> getting stuff to pause at the right points worked much better than trying to get them back into sync after the fact
[12:32:28] <av500> both can be done
[12:33:25] <thurbad> of course, updating the timer used for synching based on the duration of the pause helped too
[12:33:33] <thurbad> :P
[12:34:10] <av500> sounds strange
[12:34:14] <av500> why would you need that?
[12:34:20] <av500> when you pause audio time stops
[12:34:23] <av500> as does video time
[12:35:00] <JohnMatt> when webcam birate gets increased the fps decreases to zero when the wireless stick is on...
[12:35:19] <thurbad> the way mru did the timer is based on system time
[12:35:23] <av500> yes, usb on omap sucks
[12:36:17] <JohnMatt> very dissapointing
[12:37:02] <thurbad> a lot of these usb wireless adapters have requirements for like 1.2 GHz processors
[12:37:25] <JohnMatt> but it happens even if the usb stick is removed
[12:37:30] <JohnMatt> when bitrate increases
[12:37:34] <thurbad> ah, eww
[12:37:43] <JohnMatt> and it is also recording video
[12:37:49] <JohnMatt> sorry, audio*
[12:38:01] <JohnMatt> i get no images when the bitrate increases
[12:38:15] <JohnMatt> i guess i will have to use the line-in jack...
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[12:41:33] <JohnMatt> when bitrate is higher....i see cpu usage decreases upto 3%, i bet thats coz of usb bandwidth, cant handle audio and video
[12:41:48] <JohnMatt> this is the command i use
[12:41:52] <JohnMatt> ffmpeg -r 9000 -ac 1 -f alsa -i hw:1,0 -f video4linux2 -s 320x240 -r 12 -i /dev/video0 -f mpegts -vcodec libxvid -acodec libmp3lame udp://192.168.2.233:1234
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[13:25:37] <JohnMatt> anyone has idea o what IC preamp can i use to power a mic so i can use it for the bagleboard-xm?
[13:25:49] <JohnMatt> through the line-in minijack
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[14:04:50] <djlewis> JohnMatt: that schematic and parts list should be all over the net
[14:04:57] <djlewis> common item
[14:05:31] <djlewis> depends on what type mic though.
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[14:09:01] <JohnMatt> djlewis i dont mind the type of micprohone im not looking for top quality
[14:09:08] <JohnMatt> just something which works
[14:09:27] <JohnMatt> i guess an electret one should do the job
[14:10:02] <riot> debian on a pandaboard is niiice :)
[14:10:23] <riot> thanks to all who made that work \o/
[14:11:55] <JohnMatt> ive readed somewhre i should use a MAX9812
[14:12:00] <JohnMatt> preampt
[14:12:36] <JohnMatt> but i dont see any schematic for this
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[14:50:31] <Rubenz> hi, can i ask for some advice?
[14:50:57] <Rubenz> on OS choice for the beagleboard
[14:51:08] <av500> ask
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[14:51:56] <Rubenz> For my masters thesis, I'm going to try and build a quadcopter. But the requirement is, that it runs a RTOS.
[14:52:21] <av500> I thought the requirement is that it flies in the end
[14:52:31] <Rubenz> of course :)
[14:52:34] <av500> but that might not be academic enough....
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[14:53:09] <Rubenz> but i was wondering, are there any pro's and cons between running WinCE vs QNX on the beagleboard
[14:53:30] <av500> wince is a RTOS now?
[14:55:05] <Rubenz> from version 3 onward
[14:55:25] <av500> and you have wince for beagle?
[14:55:28] <av500> or QNX?
[14:55:54] <Rubenz> well we have a licence at school yes
[14:56:00] <Rubenz> and there are BSP's for both
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[14:57:10] <av500> and support?
[14:58:15] <Rubenz> don't know yet
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[15:00:18] <Rubenz> but i was thinking, I need pwm control for the rotors. So i would try to use the gpio's for that. In the BSP for WinCE it says a gpio driver is included. But i was wondering if anyone had some experience with using it.
[15:00:48] <Rubenz> and how hard it would be to use the gpios on qnx vs wince
[15:01:21] <av500> 1) not much wince or qnx knowledge here
[15:01:27] <av500> 2) PWM via GPIO is a nogo
[15:01:44] <Rubenz> how would you pwm?
[15:01:50] <av500> externally
[15:02:07] <Rubenz> hmm
[15:02:56] <av500> http://mikrokopter.de/ucwiki/en/BrushlessCtrl
[15:03:07] <av500> via I2C
[15:03:29] <av500> as an example
[15:04:00] <av500> assuming you have a brushless
[15:04:18] <Rubenz> yes, i'm looking into some kits, but all of them brushless
[15:08:07] <av500> how would you control the brushless with a PWM?
[15:08:51] <Rubenz> well i was looking at
[15:08:55] <Rubenz> this: http://store.scoutuav.com/products-page/airframes/scout-quadcopter-kit/
[15:09:36] <Rubenz> but i can't find much info on how the ESC's supplied with the kit can be controlled
[15:10:19] <av500> pwm I guess
[15:10:26] <GGuyZ> av500: Could you please explain again why in YUV422 a frame buffer is of size H*W*2 (Shouldn't it be W*H*3/2?), and in YUV420 Planar it's H*W*3/2?
[15:10:28] <av500> prolly like a servo
[15:10:55] <av500> GGuyZ: http://www.fourcc.org/yuv.php
[15:11:56] <av500> GGuyZ: in short, YUV422 has 2x the color info than YUV420
[15:12:13] <av500> which if you convert YUV420 to YUV422 means you are wasting memory
[15:12:28] <Rubenz> yea, thats what i read on forums so far. I guess i could then make a small circuit with a ?c with some hardware pwm control that takes i?c input. from the beagle. (sorry to interrupt)
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[15:12:41] <av500> np, this is irc
[15:14:47] <GGuyZ> av500: Actually I read it before asking. 420 contains y/4 u values and y/4 v values. That's y + y/2 = 3y/2 values. 4:2:2 contains 2y data. Is that the reason?
[15:15:21] <av500> Rubenz: or you find an ESC that has I2C in the 1st place
[15:15:28] <GGuyZ> and in 4:2:0 you split it to 3 planes (Y, U, V), while in 4:2:2 it's (always?) packed/interleaved --> 1 plane?
[15:15:35] <av500> no
[15:16:07] <av500> packed vs interleaved is another thing
[15:16:22] <av500> packed vs planar I mean
[15:16:24] <odavilar> I'v a beagle xM rev C, i'm using an Adaptor with 5v-2A, when i try to boot using 2 usb ports it don't boots, after loading the kernel it keeps it self rebooting, do you know something about it?
[15:16:40] <av500> you can have 4:2:0 planar as well, they it is 4Y for 1U and 1V
[15:16:59] <av500> or you interleave only U and V and get NV12
[15:17:07] <GGuyZ> av500: And in that case you split it to 3 buffers?
[15:17:17] <GGuyZ> and I guess you meant 4:2:2
[15:17:23] <av500> no
[15:17:24] <GGuyZ> uh, no
[15:17:25] <GGuyZ> nm
[15:17:45] <av500> x:y:z say something about how much bit per color and pixel
[15:17:59] <av500> packed vs planar says how it is in memory
[15:18:29] <GGuyZ> And what determines the number of buffers used (planes)?
[15:18:42] <GGuyZ> packed = 1, planar = 2/3?
[15:18:46] <GGuyZ> 2 or 3 that is
[15:18:47] <av500> ???
[15:18:51] <av500> nothing
[15:19:08] <av500> you can pack vs planar as you see fit
[15:19:14] <Rubenz> av500: yes i'm looking into that now. Thanks for the advice!
[15:19:15] <av500> and as the codec/hardware supports it
[15:21:16] <GGuyZ> Alright, gotcha. One more question - I understand what packed means. Isn't interleaved the same thing?
[15:21:55] <av500> yes
[15:22:00] <av500> Rubenz: http://skymixer.engineering.free.fr/index.php?option=com_content&view=article&id=95:zef100-v100-brushless-controller&catid=49:motor-controllers&Itemid=49
[15:22:15] <GGuyZ> av500: Great, thanks!
[15:22:59] <av500> based on http://home.versanet.de/~b-konze/blc_6a/blc_6a.htm
[15:23:16] <av500> based on an atmega, as I said in the 1st place :)
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[15:25:45] <GGuyZ> av500: Sorry, one more please :). When converting from 4:2:0 to 4:2:2 you need to add an additional Pixels/4 values. Do you simply replicate identical UV values, or you calculate some kind of weighted average to create distinct UV values?
[15:25:57] <av500> depends
[15:26:26] <av500> for these pixel formats, sometimes the color positions is different
[15:26:33] <av500> so to do it exactly, it can be tricky
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[15:26:44] <av500> for quick and dirty you just replicate
[15:27:42] <GGuyZ> In mru's neon pix convert for an example? Was it replication or more advanced?
[15:28:07] <JohnMatt> is there any pin i can use to power a 5v preamp so i can use a microphone with beagleboard?
[15:28:31] <av500> GGuyZ: IIRC is averages 2 lines or so
[15:29:11] <av500> GGuyZ: see here for what I meant with "position": http://discoverybiz.net/enu0/faq/faq_YUVSubSampleByBreeze.html
[15:30:42] <GGuyZ> Thanks, now it's clear :)
[15:30:56] <av500> didnt you have a deadline/presentation?
[15:31:27] <GGuyZ> Yes. It was postponed from last week to the day after tomorrow
[15:32:13] <av500> ah
[15:32:16] <GGuyZ> But this is more related to general interest. I'm a bit sorry I didn't take class on video signal processing
[15:32:52] <GGuyZ> av500: My professor was thrilled to hear things were working on the DSP :)
[15:42:54] <mru> GGuyZ: my conversion code averages lines to create the odd output lines
[15:43:01] <mru> it's better than replicating but still not correct
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[16:48:00] <b7500af1> question about dsplink: Is there any reason that PROC_load() should take a very long time (30+ seconds) to return? It's a small dsp exe (300kB). And it does return successfully, eventually.
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[16:48:23] <av500> dsp running at 32khz?
[16:48:46] <b7500af1> that's what it feels like
[16:50:35] <av500> no idea
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[18:15:35] <_av500_> enable dsplink debug and see where it spends time
[18:15:42] <b7500af1> av500, I was just looking through some of the dsplink examples and see that in almost every case some memory pool is allocated prior to proc_load.. is that required? or maybe since I'm not doing that in my code, that's causing the delay?
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[18:37:17] <_av500_> unlikely
[18:37:28] <_av500_> you knowyourself if you need mem or not
[18:37:32] <_av500_> in your app
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[18:48:32] <b7500af1> _av500_, the debug isn't too helpful. Here is a snip of the output: http://pastebin.com/fr4T892M
[18:50:46] <_av500_> these are kernel logs?
[18:51:10] <_av500_> or user space?
[18:51:13] <b7500af1> user
[18:51:15] <_av500_> ah
[18:51:23] <_av500_> the real stuff happens in kernel
[18:53:08] <_av500_> so enable kernel logs
[18:53:22] <b7500af1> rgr
[18:54:41] <_av500_> there is a wiki that explains how
[18:54:56] <b7500af1> I've been using this: http://processors.wiki.ti.com/index.php/Enabling_trace_in_DSPLink
[18:55:06] <b7500af1> not the simplest thing.. but so far it's worked.
[18:56:02] <b7500af1> I'm not sure what components out of the list should be enabled.. so just guessing: http://processors.wiki.ti.com/index.php/Enabling_trace_in_DSPLink#Enabling_kernel-level_prints
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[19:04:04] <_av500_> yes
[19:04:19] <_av500_> you need to edit that one file and enable traces for components
[19:04:27] <_av500_> proc looks like a good candidate
[19:04:31] <_av500_> but see for yourself
[19:04:32] <b7500af1> yeah, heh
[19:04:58] <b7500af1> I'm trying it.. I can't tell a difference between the output.. so trying others
[19:05:24] <_av500_> you rebuild the module?
[19:05:27] <_av500_> and reload it?
[19:05:28] <b7500af1> yep
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[19:18:07] <thweber> something changed for the gpio192? write protect for mmc ? i get [ 0.391510] _omap_mux_init_gpio: Could not set gpio192
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[19:48:52] <b7500af1> av500, from that wiki.. there is something missing as far as turning on kernel trace. You have a different site?
[19:49:29] <b7500af1> I think it has something along the lines of a -DTRACE_KERNEL flag.. but then the compiler screams about "trace1_print" being undefined, etc...
[19:50:10] <_av500_> afaik you need to edit some header file
[19:52:46] <_av500_> edit drv_pmgr.c as it says there
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[19:52:57] <_av500_> for a start enable all debug if needed
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[19:53:52] <rlrosa> hi
[19:54:12] <rlrosa> does anybody know how to contact the admin for the beagleboard googlegroup?
[19:54:26] <_av500_> jkridner: ^^^^
[19:54:28] <rlrosa> i've been "banned" from it, though i have never interacted with it
[19:55:01] <mru> maybe you are a spammer :)
[19:56:38] <rlrosa> mru: jaj
[19:56:44] <rlrosa> mru: i'll double check
[19:57:10] <rlrosa> it's pretty annoying, i have to use "incognito" mode to be able to see the posts
[19:57:29] <rlrosa> does anybody know how to contact the admin for the beagleboard googlegroup?
[19:57:37] <rlrosa> i've been "banned" from it, though i have never interacted with it
[19:58:46] <_av500_> hmm
[19:58:55] <_av500_> send an email to jason
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[20:05:49] <GGuyZ> mru: Sorry, I online now returned. Thanks for replying. So an average of each 2 even consecutive lines creates the corresponding odd output line?
[20:06:06] <GGuyZ> online=only :P
[20:06:46] <mru> yes, that is what my code does
[20:07:31] <mru> but that results in output that's off by half a pixel
[20:07:54] <mru> which is good enough for display purposes
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[20:09:04] <mru> doing it properly would be slower
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[20:14:54] <GGuyZ> Why's that? if you care to explain.. (off by half a pixel)
[20:17:39] <mru> 420 chroma samples are half-way between luma samples
[20:18:03] <mru> while 422 chroma samples are cosited with luma
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[20:20:21] <thurbad> any know why an app would throw an illegal instruction error when debugging remotely if it was conpiled on the board?
[20:20:39] <GGuyZ> mru: Thanks.. (Reading about it some more)
[20:21:39] <mru> thurbad: maybe you executed an illegal instruction...
[20:22:00] <thurbad> yeah, I realize that.. but how?
[20:23:00] <mru> what exactly did you do?
[20:23:29] <thurbad> let someone else at work work on the code :/
[20:24:08] <GGuyZ> thurbad: revert
[20:24:10] <GGuyZ> :D
[20:24:30] <mru> gdb
[20:24:35] <mru> x/i $pc
[20:24:43] <thurbad> considering it, but we did some work in parallel
[20:25:55] * GGuyZ wishes his beagle puppy would be as obedient as the beagle board
[20:26:08] <GGuyZ> thurbad: plus, I don't suppose he'd be too happy
[20:26:39] <thurbad> more concerned with fixing the codebase at this point
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[20:37:47] <rlrosa> av500: jason at gmail?
[20:38:12] <_av500_> rlrosa: see the beagle mailing list
[20:38:19] <_av500_> only one jason kridner there
[20:38:52] <_av500_> gn
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[20:54:52] <rlrosa> av500: found jason. thanks! (again :) )
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[21:42:21] <rlrosa> any tips on how to use uart1 on the xm?
[21:42:34] <rlrosa> i set the mux options in my u-boot
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[21:43:09] <rlrosa> still get a periodic pulse on pin 15 from P13
[21:47:45] <GGuyZ> Is it safe to do opkg remove gnome / opkg install gnome? My FS got corrupted and some important gnome files aren't recoverable. I don't want to try a new image as I have many custom scripts in place I don't want to fish out :)
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