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#rockbox log for 2011-04-06

00:00:08[Saint]I seem to remember funman saying that was enough to get RB to boot, but the OF didn't like it.
00:00:12 Quit Keripo (Quit: Leaving.)
00:00:25[Saint]the OF expects extra magic on the disk.
00:00:35bertrikWhen I did a recovery, I kept the pads bridged only briefly, only during power-up
00:00:45nettechyes... I guess that is tru.
00:01:11nettechyes, maybe I should not have kept the jumper on while I DD'ed.
00:01:22[Saint]bertrik: From my understanding, you're either a: very lucky it worked, or b: it was in some weird state and you managed to kick it in the nuts.
00:02:27[Saint]Others I know who attempted this had all sorts of hell keeping those pads bridged.
00:02:33nettechtru that also. I know for a fact I completely erased the boot partition, since I formatted it Fat32 by mistake
00:02:48 Quit leavittx (Ping timeout: 246 seconds)
00:04:26 Join Elfish [0] (amba@2a01:4f8:100:90a1:abc:abc:abc:abc)
00:04:30nettechhehehe... Im using 32 gauge wire wrap wire, maybe I will just hook the wire ends up to a switch so I can keep trying...hmmp
00:05:17*nettech thinks soon those jumper pads will wear off the pcb.
00:08:47[Saint]ah, yes...that's where I got it from.
00:09:03[Saint]I also remember the original conversation when this was discovered:
00:09:05[Saint]"I copied an OF (tried both patched and unpatched) on the recovery drive of a Fuzev1, rockbox would work correctly but OF would only power the backlight and do nothing"
00:10:05*nettech seriously checking out the sandisk sansa fuze page.....mmmm
00:10:26nettech64k color screen.
00:10:43[Saint]Can you still get a Fuze new?
00:11:08nettechfuze plus
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00:11:25*[Saint] thought that it had been discontinued in favour of the Fuze+ (not an RB target)
00:11:30[Saint]ah, right.
00:11:57nettechyes fuze plus refurb $45, new is $59
00:13:13nettechoh.. yes I forgot it is not RB compatible.
00:13:14 Quit mshathlonxp (Ping timeout: 258 seconds)
00:13:16nettechgrrr
00:13:18 Nick msh_ is now known as mshathlonxp (~msh@5acba0d5.bb.sky.com)
00:14:34nettechO dot Com has refurb fuze for $45
00:14:38nettechhmm
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00:38:34*[Saint] wonders why USB transfer is painfully slow on his Nano1G in RB
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00:38:51[Saint]6375B/s
00:38:52[Saint]:/
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00:52:50[Saint]what the!?!
00:53:33[Saint]disk mode == normal transfer speeds, RB usb == ~6-7000B/s
00:54:28[Saint]Hmmmm....only 3.8 though
00:54:34[Saint]svn head is fine.
00:59:25*TheSeven is getting *tons* of this during make clean:
00:59:25TheSevenIn file included from <command-line>:0:
00:59:28TheSeven/data/rockbox-trunk/firmware/export/config.h:25:22: error: autoconf.h: No such file or directory
01:00
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01:11:59***Saving seen data "./dancer.seen"
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01:25:52mishrahi
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01:28:36mishraanybody there to answer a few queries on code-base and GSOC proposed tasks ?
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01:32:35saratogamishra: maybe, what questions did you have?
01:35:09mishraWell first letme tell you that I am new with rockbox, just compiled my first rb, looking at the code and am interested in MP3 optimization task OR Emulator
01:36:32mishraso first about mp3, soif i understand it correctly, I need to change the components of libmad and not the part using it, right?
01:37:09saratogawhy are you interested in that task?
01:38:52mishraas a part of my 2 academic projects, I have been playing around with h264 and vp8 recently, both were optimized for VLIW architectures, and then a DSE performed etc
01:39:17mishraso I think it will be relatively easy
01:39:44mishraplus ofc i use RB
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01:41:09saratogaany reason you were interested in that particular project?
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01:41:55kisakout of curiosity, what was this year's rockbox-related april fool's joke?
01:42:14mishrau mean h264 and vp8?
01:42:23saratogano I mean MP3
01:42:43saratogaor the emulator
01:44:12saratogabe back in a few
01:45:05mishramp3 bcoz i think ican do optimizations relatively easily than other projects
01:45:20mishraand emulaor bcoz i am using skyeye
01:46:06mishranp
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01:47:52[Saint]real words please mishra
01:48:10[Saint]Some people use screen readers or translators.
01:48:38mishraok no problem
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01:58:51saratogawhy do you think it would be easy? just in terms of whats required, i would consider it the most difficult of the codec projects we listed
02:00
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02:02:08mishraas in as compared to AAC or MIPS/ARM optimization?
02:02:36mishrafranly I did not had that idea
02:02:42mishrafrankly*
02:03:14saratogaas compared to almost any optimization project
02:03:46mishramay I ask why ?
02:04:55saratogabecause mp3 is extremely complicated, its an open ended project involving comparing a lot of very complicated code that requires a detailed knowledge of the decoder process
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02:05:22saratogaadditionally literally dozens of people have picked over mp3 over the years, so theres not much easy stuff left
02:05:36 Quit eGen_ (Ping timeout: 240 seconds)
02:05:58mishraok, so what do you suggest
02:06:15JdGordon|isnt mp3 also well over realtime on all targets by a pretty considerable margin?
02:06:32[Saint]afaik, yes.
02:07:19mishraso why the task ?
02:08:34saratogawell we want it faster, if we had someone who knew a lot about mp3 it'd be great
02:09:13saratogaAAC is pretty slow right now
02:09:22saratogaso theres probably a lot to be done there
02:10:14mishrai am qoting the wki, "on ARM7TDMI, Rockbox uses 38MHz for 128k MP3. The official ARM decoder uses 29MHz, a difference of almost 25%"
02:10:23kisakthe faster the decoder, the quicker the player can go back to low power state
02:10:31mishrawhat do you mean by using 38MHZ
02:10:33mishra?
02:11:22saratogahow many MHz are needed
02:11:36saratogaif its faster you don't need as high a clock speed for decoding
02:12:27mishrau mean the cpu is clocked according to the load variation?
02:14:14saratogayeah
02:14:53mishraand the official arm decoder source is not available ?
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02:15:11saratogano way
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02:26:54mishrahow do we measure how much is required for decoding ?
02:27:44saratogatheres a plugin called test_codec that measures decode speed
02:28:55saratogabasically just decodes a file and times how long it took
02:31:28mishraok
02:32:27mishraso how much is the effort required in AAC optimization according to you?
02:32:38mishrain terms of time
02:37:10saratogadepends on your experience, but its certainly easier to work on then mp3
02:37:18saratogado you know much about aac?
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02:48:54mishrawell not much, i am not a signal processing guy as such.
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03:00
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03:04:26mishrawell thank you very much for the information, i will get back in touch later.
03:06:18saratogano problem
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12:10:04skapazzoHy to everybody
12:10:18skapazzoJust another GSOC student checking in
12:15:11gevaertsWelcome!
12:16:37skapazzoMaybe it's not the best time, and I hope it's not too late, but I'm really interested in the Docks+accessories project.
12:16:52skapazzoIs there someone I should talk to in particular?
12:17:49sinthetekgsoc?
12:18:23gevaertsIt shouldn't be too late, but for that project I'm not entirely sure who the right person would be
12:19:11skapazzosinthetek: Google Summer of Code
12:20:09skapazzoMaybe I should write in the mailing-list
12:20:13sinthetekahh
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12:23:52ruskieis there any differnce between sansa clip+ 2GB or 4GB in terms of running rockbox on it?
12:24:08[Saint]Nup.
12:24:23ruskiethanks
12:24:26*ruskie orders
12:24:31[Saint]Other than how much media you can fit on it, but that's relevant to the OF also ;)
12:25:29ruskiesince it supports mSDs not really a problem ;)
12:25:41gevaertsskapazzo: I believe there has been some talk about the dock project here during the past weeks. Maybe you could have a look at the irc logs?
12:27:01skapazzogevaerts: I'm nearly through the logs of last week, didn't find much till now
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12:34:45preglow_even with dircache enabled, rockbox spins the hd up from time to time now. any idea why?
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12:35:00smkHi. I am starting late on gsoc 2011. I want to work with rockbox. To start, I have downloaded the source archive from svn. I need to task to work on, so i can understand the codebase better and pick a project
12:35:17smkI downloaded rockbox 3.8
12:35:39n1ssmk: it's probably better to work on the trunk code
12:36:07n1sall development happens on trunk and we just backport fixes to the release branches
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13:07:14gevaertsskapazzo: a quick search tells me that this may have been discussed on March 20th, 27th, or 28th
13:09:29gevaertssmk: have a look at either the bug tracker or http://www.rockbox.org/wiki/MrSomeonesTodoList
13:10:21smkgot the trunk code. ok.
13:11:17Tornei should put more of my todo list onto mr someone's todo list. ;)
13:11:26skapazzogevaerts: Didn't look as far back as the 20th, but found the others. Thanks
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13:12:35pamaurythen rename it EveryoneElseTodoList
13:12:44Tornepamaury: hehe
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13:21:42tails_hello
13:21:56tails_how can i enable libttf compiling?
13:22:04tails_wat
13:22:12tails_i mean convttf :D
13:22:35[Saint]What do you mean? set up a development environment, make a build.
13:22:41tails_yes
13:22:52[Saint]I mean, that's all you need to do.
13:22:56tails_but i can't find compiled convttf
13:23:03[Saint]You needn't do anything special to enable .ttf fonts
13:23:38[Saint]If you do one build, and the dependencies are met, convttf will be built.
13:24:11tails_r29550: Don't automatically build convttf - it isn't (currently) required to build Rockbox.
13:24:23tails_found this in SVN changelog
13:24:59[Saint]cd to /rockbox/tools/ and do "make convttf"
13:25:31tails_thanks
13:26:15tails_http://pastebin.com/raw.php?i=ebaK5kWK
13:26:25tails_got some errors
13:27:09[Saint]You need freetype
13:27:35tails_it's installed
13:28:03tails_and it compiled fine long before it was added to SVN
13:28:52tails_oh wait
13:28:55tails_it compiled
13:29:18tails_though errors are no good
13:29:23n1sthose are just warnings
13:29:32tails_yup
13:29:41tails_didn't noticed at first
13:29:45[Saint]yes, I didn't examine it properly, I saw freetype and assumed.
13:31:02[Saint]just run convttf with no arguments to get a list of args. The basic syntax is pretty simple.
13:31:26tails_oh i know that :)
13:35:23[Saint]You'll probably find that you need to add "-r 1" at least to add some seperation between chars.
13:36:57tails_hmm
13:37:12tails_there was no problems with Gulim font
13:37:43tails_i just found that tool can make digits equally wide now
13:38:01[Saint]you can add the -d flag to review the font layout without without having to go back and forth between device or sim also, I foundd that very useful.
13:38:15[Saint]tails_: Yes, a very recent addition.
13:39:44[Saint]also, (you may already know) since it doesn't actually explicitly state it, the -T* flags can be given negative values to add ascent/descent instead of stripp it.
13:40:41tails_i really had no problms with font conversion before so i don't used it:)
13:41:13tails_btw it says that -w flag disables making digits same wide
13:41:23tails_it's not a typo right?
13:41:38[Saint]That is correct.
13:41:43tails_ok
13:41:53[Saint]by default, the dgits are the same width.
13:41:59[Saint]*digits
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13:43:34tails_oh wow
13:43:59tails_it outputs converted glyphs as text
13:44:08[Saint]cool huh? ;)
13:44:16tails_i though that will be Bitamp :S
13:44:52tails_also it doesn't seems to output all of them
13:45:24[Saint]If there is blank spaces, that is just chars missing from the fontset.
13:46:03tails_i don't see bunch of chinese symbols et al
13:46:10smk"Remove malloc from libfaad". Any doc or reference to help me get moving on it?
13:47:14[Saint]tails_: Hmmm...if neither the l or s flags are present it should convert all glyphs in the fontset.
13:47:49tails_no it converts all of them
13:48:13tails_but prints to console hmm first 128?
13:48:30tails_too lazy to count but looks like that
13:48:47tails_Converted 20608 (99%)[K
13:48:47tails_−−-Converted Glyph Dump−−-
13:48:47tails_−−-End Glyph Dump−−-
13:48:51[Saint]it's not a scrollback limit in your console? (silly but obvious question I need to ask ;))
13:48:56tails_then goe something like this
13:49:08tails_no i made a log :)
13:50:40[Saint]I can't say I have noticed that personally, but I've only ever reviewed the latin chars when I make a font.
13:51:04[Saint]And I can't say I usually know how many chars are supposed to be in a particular set.
13:51:05tails_well that's because you don't converted unicode fonts?
13:51:23tails_Gulim has 20609
13:51:32[Saint]No, I do...I just don't take any notice of the chars I don't use personally.
13:51:46tails_And Tahoma unicode 38920
13:52:01tails_well that's not a problem
13:52:14tails_but small bug in convttf
13:52:25[Saint]It's definitely not impossible that the debug output is flawed in some way.
13:52:33tails_hmm
13:52:44[Saint]But, are the missing chars actually converted?
13:53:01[Saint]If they are missing from the converted font it's slightly more drastic.
13:53:45tails_lemme upload fonts and check :)
13:58:02tails_hmmm
13:58:15tails_newly generated font looks much smaller
13:58:38tails_and it has problems with spaces between characters :|
13:59:26[Saint]the -p flag sets the *total* font height, rather than the height of the glyph.
13:59:35[Saint]So, this value includes ascent/descent.
13:59:49tails_did they changed rendering method somehow?
14:00
14:00:26[Saint]depending on which one of the many semi-broken convttf's you were using previously "quite possibly".
14:00:49Zagorsmk: no, there are no docs. you need to learn how the faad code works, and figure out how the dynamic memory use can be converted to static.
14:00:49tails_hmm
14:01:02tails_i was using last one from FS
14:01:22tails_task seems to be deleted eh?
14:01:32[Saint]Yes, as it has been committed.
14:01:41tails_;_;
14:01:56[Saint]you can still view the task if you know the FS#
14:02:10tails_actually i don't remember it
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14:02:28[Saint]it will be in the commit logs somewhere.
14:02:41tails_oh yeah
14:02:48[Saint]http://www.rockbox.org/since-release.html
14:03:26tails_http://www.rockbox.org/tracker/task/8961 found it
14:03:27[Saint]FS #8961
14:03:38[Saint]awww, too late ;)
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14:16:01tguinotHmmm, still nobody for the dock subject for google summer of code
14:16:19tguinotshould i wait to apply?
14:16:45tguinotor should i apply even if there is nobody mentoring?
14:16:53B4gder how can you tell?
14:17:00B4gderwe haven't assigned mentors
14:17:28Torneif you want to do the project apply for it
14:17:32tguinoti mean no possible mentors
14:17:33Tornewe will find you a menotr
14:17:41tguinoton the wiki
14:17:44gevaertstguinot: did you read the bits of irc log from March 20th, 27th, and 28th? There were related discussions on those days
14:17:57tguinotok
14:18:01tguinotscrolling back
14:18:10B4gdertguinot: if you want to be a student for a project, we will assign at least two mentors for each accepted project
14:18:37tguinotok
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14:49:19smkregarding gsoc: i want to work on cleaning up the radio code. Anyone picked that up? mentors?
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14:51:45wodzwhat at minimum I need to configure to transmit something from the device to the host by means of bulk in request? bulk in endpoint for sure but enything else?
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14:53:38TheSevenwodz: that highly depends on the usb core you're dealing with, and the environment you're working in
14:54:02pamauryyou need to have the device descriptors correct for sure, then it depends on the controller
14:54:59TheSevenpamaury: that only applies if the host OS is somewhat sane. if you really want to, you can really do it with just one bulk endpoint, but that requires a special host-side driver that can deal with it
14:55:27wodzTheSeven: linux + libusb can do that?
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14:55:36pamauryyes, I was assuming a sane OS
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14:55:52TheSevenwodz: for that you'll need to make your way through the enumeration, and then you can basically do whatever you want
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14:56:10TheSevenso you'll have to respond to all those EP0 control requests correctly
14:56:19wodzshit
14:56:43TheSevenwhat are you planning to do, and with which kind of USB hardware?
14:57:06wodzTheSeven: rk27xx SoC and I want to dump content of the flash
14:57:29TheSevenit took me like two weeks to pull that off on the nano2g :)
14:57:44TheSevenbut i had disassemblies of the DFU code in the bootrom
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14:57:53TheSevenhaving a datasheet might be even better though
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14:58:21TheSevenblindly getting USB to work is certainly not an easy task
14:58:39wodzthe datasheet is awkward at best
14:59:02pamauryis it a know controller or something really different from all other controllers ?
14:59:05pamauryknown
14:59:24wodzdunno - I don't have much experience with usb at all
14:59:29pamaurydo you have a link to the datasheet ?
14:59:38pamauryI can tell you if I recognize it
15:00
15:00:26wodzask google about porsche9 datasheet :-)
15:00:36*TheSeven doesn't think we have to expect a sane usb core in those rockchip things
15:01:13pamaurythe arc core is very common
15:01:29TheSeventhe arc core is not exactly what I would call sane though :P
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15:01:41pamauryhuh, it's very versatile
15:01:57pamauryand relatively easy to program
15:02:17pamauryat least it's not one of those stupid fifo based controller
15:02:40*TheSeven probably mixed it up with TCC then :P
15:03:05pamaurythe advantage of the arc controller is that it has a powerful dma engine
15:03:09TheSevenARC was that memory-based queueing thing? roughly like uhci/ehci?
15:03:14pamauryyes
15:04:03*TheSeven wonders if this datasheet is gonna arrive today or tomorrow
15:04:15pamaurydatasheet of what ?
15:04:18TheSevenseems to be pretty fat, and loading with like 30KB/s
15:04:22TheSevenrk27xx
15:04:35pamauryyeah, I'm downloading at 4Kb/s
15:05:03wodzit's 3.9MB
15:05:21pamauryit will take 10 minutes at this rate :(
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15:11:23wodzI thought it is possible to somehow pass stream of data through USB without any protocol and observe this with help of wireshark or something
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15:12:20pamaurythat would not be easy
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15:12:31pamaurysince the host is the one asking for data
15:12:33TheSevenpamaury: speeds will get better if you suck with like 16 streams on that channel
15:12:52pamauryhowever, you can also trans;it everything through EP0
15:13:13pamaury(with enough coffee to wait :))
15:13:24TheSevenit's not *that* slow
15:13:36TheSevenDFU gets data rates in the 100-500KB/s range for me
15:13:36wodzthe speed doesn't matter here really
15:13:50TheSevenbut you'll still need to do the enumeration
15:13:53TheSevenand that's the hard part of it
15:14:06TheSevenonce that's done, bulk transfers aren't much more complex than control
15:14:38wodzI can relay on enumeration from rom loader - it setups EP0
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15:15:18TheSevenif you can break into that state and take it over without disconnecting, that might possibly work
15:15:35TheSevennevertheless you'll probably get some "set configuration" and similar requests from time to time
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15:16:42pamauryOr if you really want to, there is an ugly alternative: only handle the first request when the host ask for the device descritpro: before reset it's only 8 bytes and then do a bus reset. You can transmit 8 bytes between each reset but it will be horribly slow and I'm pretty sure linux has a mechanism against always resettting devices
15:17:12TheSevenpamaury: does linux limit the size of the device descriptor?
15:17:25TheSevenhe could possibly transfer the payload with the first get device descriptor/all request
15:17:41TheSevenbut linux probably limits that to something too small
15:17:52gevaertsTheSeven: you mean the configuration descriptor?
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15:19:35pamaurythe host will bus reset after 8 bytes usually, it will not transfer all the payload
15:19:43TheSevenbut to be honest: you'll probably be faster doing it by blinking the backlight or something, than by using that kind of hack
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15:21:39wodzhmm I think I'll start with writing lcd driver - this should be pretty easy and will give me some debugging capabilities
15:21:59*TheSeven always starts with usb
15:22:09TheSeventhat's the best debugging capability that you can have
15:22:16*pamaury starts with what is reasonable
15:22:53TheSevenbut i have the advantage that i can copy my code for that around from one type of ipod to another and only need to adjust like 5 configuration values
15:22:59TheSevenpamaury: finally got that file
15:23:03wodzdebugging usb driver without much usb knowledge and with backlight controll as only feedback mechanism is pretty hard
15:23:15pamaurythe same for lcd :)
15:23:29TheSevenwodz: I didn't even have backlight control back then
15:23:38pamauryhuh, I'm only at 60 percent !
15:23:49TheSeventhe only thing that i was able to do was rebooting the device by hitting the prefetch abort vector
15:24:15TheSevenso i had one bit of feedback per try: device hangs or reboots
15:24:37TheSeventhat was really fun :)
15:24:56*pamaury started with lcd last time because he didn't even know where its code was in memory :)
15:26:44wodzthe problem is that the way of loading custom code to the device I found involves overwriting files on system partition twice for single load. I would prefer to not destroy nand before I can do something usefull :-)
15:27:46wodzthe remedy would be to overwrite bootloader.
15:28:00TheSevenseems to be a pretty simple, but dma-capable core
15:28:08TheSevenbut doesn't look known to me at all
15:28:14pamaurywodz: on my last device, the only way I had was to overwrite 20Mb of the nand :)
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15:37:37tguinot~0/n
15:37:40tguinotfail
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15:41:19pamaurythis controller is not known to me either
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15:41:46wodzthanks for looking
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15:43:10pamaurythe document is quite complete, it even mentions the steps to init, read or write !
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15:43:57wodzpamaury: but the steps mentioned in datasheet doesn't match what I see in dissasm
15:44:30pamauryis there a major difference ? some things are probably less important than others
15:44:52wodzthe initialization differs slightly
15:45:25pamaurythen believe the disassembly for that part
15:46:26pamaurywhat is the difference ?
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15:47:14wodzI have piece of asm written by one guy which serves as simple loader utilizing bulk out transfer. It works but it is not quite correct
15:47:46wodzpamaury: some sequence, some additional flags set in EP config registers
15:48:19pamaurythe document says it's an example, it does not need to be exactly thus
15:48:21pamaurythis
15:50:04wodzsure
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16:00
16:02:41b42anyone tried running rockbox sources through clang static analyzer?
16:03:00b42results are here http://www.fi.muni.cz/~xmilata/scan-build-rockbox/ ... but i suppose it's 90%+ false positives
16:05:02ZagorI tried once and didn't manage to get it to say anything.
16:05:46Zagoryou seem to have been better at it :)
16:07:00Zagorcan you give me the command line you used?
16:07:02b42it required small change in makefile, didn't quite work out-of-the-box
16:07:15Zagorthis would be nice to run regularly
16:09:39b42i'll figure out the minimal amount of work needed to run it and post it here
16:09:40ZagorI think there is still suspiciously few messages in the core code
16:09:47Zagorthanks
16:10:05TorneIt's slightly problematic because of the ifdefs, no?
16:10:06JdGordon|http://www.fi.muni.cz/~xmilata/scan-build-rockbox/report-JSfx15.html#EndPath is a false positive at least :)
16:10:28TorneJdGordon|: no it isn't
16:10:29ZagorTorne: it runs using the makefile, so it uses a proper build set. including all ifdefs
16:10:41TorneZagor: yes, but my point is that things may be dead under only some combinations
16:10:52Zagorthat is true
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16:10:55TorneIt would need to build for every target and union/intersect the checkers as appropriate
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16:11:04TorneJdGordon|: that's totally legit.
16:11:13b42yes ... it just checked one set of ifdefs, namely those for sanse e200 simulator;)
16:11:24TorneDoing it for a sim is proabbly tnot he best
16:11:29b42JdGordon|: heh, interesting
16:11:30TorneI just picked about ten random ones off the list and probably nine of them are real, fwiw
16:11:41Zagoryes, same here
16:11:46Torneso i think you may be overestimating how good our code is
16:11:48gevaertsTorne: true, but the sims are the only easy one to do
16:11:51Torneor underestimating how good clang is
16:11:52Torne;)
16:11:54JdGordon|Torne: no its not?
16:12:04TorneJdGordon|: yes it is. val is overwritten in both branches of the following if/else
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16:12:13b42yeah, the analyzer is (still) rather dumb imho
16:12:15Torneso there's no point initialising it
16:12:25JdGordon|ah right, ok
16:12:30Torneb42: clang is very very good, generally; it's used very successfully by lots of large projects
16:12:43Tornee.g. chromium
16:13:07b42Torne: clang as a compiler is, but i don't think the analyzer is used much
16:13:27Tornebut that's the same thing, effectively
16:13:35TorneIt just doesn't bother to generate code :)
16:14:03Torneit's not the same kind of static analysis that something like lint does, it is effectively compiling the code anyway, just not bothering to produce target binaries
16:14:16b42not really, these analyses have to be written for specific kinds of bugs
16:14:30Torneyes.. so?
16:14:39Tornethe same things are reused as compiler warnings
16:14:41Torne(aren't they?)
16:14:53b42i.e. you don't generate code, but run some additional algorithms on the result instead
16:14:58TorneYes
16:15:15TorneThat doesn't matter
16:15:24TorneIt works the same as tehc ompiler does, is the point
16:15:30Torneand does the same kind of checks
16:15:42JdGordon|http://www.fi.muni.cz/~xmilata/scan-build-rockbox/report-exgkho.html#EndPath *is* wrong though :)
16:15:45ZagorI think these reports are valuable, and I would like to to run them regularly
16:16:14b42it would be more interesting to find something that is not wrong:)
16:16:34TorneJdGordon|: are you sure about that?
16:16:36Torneit looks right to me also
16:16:45ZagorJdGordon|: why is it wrong?
16:17:06Zagortm is initialized only conditionally, yet is used unconditionally
16:17:18Torneit looks like it's telling you the enum values are in the wrong order
16:17:21Torneare they not?
16:17:24JdGordon|step 5 has to happen for the switch to get there
16:17:41Torneno, I don't believe it would make a mistake like that
16:17:42b42Torne: the checks done here are too slow to be done during normal compilation anyway
16:18:02wodzit would be best if someone figure out how to compile arm target code with clang. -ccc-host-triple didn't work for me last time I checked
16:18:09pamaurylots of them are false positive because of macros
16:18:43Tornepamaury: isn't that just because the macros are expanding to boring things because it's a sim build, though?
16:18:46Torneit is expanding the macros.
16:18:58Tornejust maybe the sim version of the macro is a noop/etc
16:19:11pamauryyes, the simulator is definitely not the good target to check :)
16:19:13Zagorwodz: clang does not do cross compilation
16:19:37Zagorso you need an arm machine run it on...
16:19:45gevaertsTorne: I have to agree with JdGordon| here :)
16:19:59Zagoryes, that looks pretty strange
16:20:15JdGordon|gevaerts: that must be pretty painful! :D
16:20:45*pamaury then disagrees with JdGordon| without even checking
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16:20:58wodzZagor: http://geekwentfreak.wordpress.com/2011/01/16/cross-compiling-for-arm-the-llvm-way/
16:21:00JdGordon|it would be great if we got a diff of the report each run so we know if any new ones are added though
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16:21:30gevaertsIt could claim that get_time() might return NULL and not know that valid_time() checks for NULL (I hope it does, anyway), but SKIN_TOKEN_RTC_YEAR_4_DIGITS is definitely between SKIN_TOKENS_RTC_BEGIN and SKIN_TOKENS_RTC_END
16:21:50Tornedoes it complain similarly about the other cases?
16:22:15b42don't worry too much about the false positives
16:22:21Zagorwodz: uh, doesn't that use gcc?
16:22:34gevaertsTorne: yes
16:23:02wodzZagor: yes and no - clang generates assembly gas assembles this (at least this is how I understand this)
16:23:26Torneno
16:23:33pamauryto cross compile the hack is to have clang generate llvm assembly and then llc generate arm assembly
16:23:34Torneclang generates llvm bytecode
16:24:29pamaurydon't if it handles the abi correctly though in this caswe
16:24:31pamaurycase
16:25:11wodzllc converts this to .s and passes to gcc so effectively clang+llc generate assembly
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16:27:53b42Zagor: the minimal amount of work seems to be to run configure as usually, edit the makefile and change "export CC=/usr/bin/gcc" to "export CC=path_to_ccc-analyzer" and then run "scan-build make" instead of "make"
16:28:14Zagorthat's what I tried last time, with 0 resulting messasages
16:28:24ZagorI'll try again
16:29:09*gevaerts suspects that the checker doesn't like people who rely on enum ordering
16:29:40Zagorgevaerts: it does seem like a bug
16:29:47gevaertsit does indeed
16:31:34gevaertsWell, it depends on how they handle false positives
16:33:06b42Zagor: eh, sorry, the export should be "export CC=path_to_ccc-analyzer path_to_gcc"
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16:36:05Zagorhmm, where does it say to replace CC with ccc-analyzer? llvm.org just says run scan-build
16:36:36Zagorthis does work a lot better. thanks, b42
16:37:07b42scan-build should do the replacement, but it didn't work here for some reason
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16:38:50Ventushey im using a sansa e200 atm, but its to weak to play all .m4a files... which player supported by rockbox got enough power?
16:39:34b42Zagor: no problem, let me know if you run into any problem
16:40:05b42(btw, i used clang built from svn, i don't know what will 2.8 do)
16:40:16ZagorVentus: sans fuze v2
16:40:20Zagor*sansa
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16:45:11Aylahello
16:45:35VentusZagor, fuze v2 equals fuze+?
16:45:55pamauryno, fuze+ is not yet supported
16:46:01n1sVentus: no fuze v2 is fuzze v2
16:46:10n1ss/zz/z/
16:49:20Ventusargh... i dont want this proprietary connection anymore :-/... hmm then ill wait and convert all m4a files before transferring... thanks for your help =)
16:49:47n1sthe beast can play them too
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16:52:48n1samsv1 should do it too
16:56:08b42still nobody here to discuss the "Standalone playback core/library" GSoC project?
16:57:09 Quit pamaury (Ping timeout: 252 seconds)
16:58:16Zagoryou can discuss it with me, but unfortunately I need to go. hopefully I'll be back in 2-3 hours.
16:58:32b42Zagor: good ... i'll try to be here then
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17:47:04saratogais the write wav option in testcodec broken?
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17:50:31saratogahas anyone tried it recently?
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18:42:02JoNilHas anyone showed any interest in the USB CD emulation GSoC project?
18:42:36gevaertsWell, me, as a mentor :)
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18:45:05JoNilI'm thinking of applying for it, what kind of experience do you think I would need? I’m currently working on a robot project for class which involves three atmega16 processors.
18:46:34gevaertsI guess you have no USB or SCSI experience?
18:46:40gevaertsThose are rather uncommon
18:46:41JoNilNope
18:48:01gevaertsHow's your C knowledge?
18:50:36JoNilI have done one bigger project in C++ and now we are using C for the robot project, and I have done some GLSL.
18:51:08gevaertsI think the project mainly involves getting around in the rockbox code, which of course requires understanding C properly, a certain amount of USB knowledge (which can be learned. You don't need to be an expert), and getting used to the SCSI specs
18:51:09JoNilNot very experienced in C but I think I have writtena 3D engine in scheme :D
18:52:37JoNilI have bean looking at the usb code some and it looks kind of scary but i think i could do it. :)
18:53:00gevaertsIt can be a bit scary at first, yes
18:53:41JoNilWhere is a good place to start to get to know it?
18:54:05gevaertshm
18:56:15gevaertsWell, for this particular project, I'd say firmware/usbstack/usb_class_driver.h, which defines the API that USB class drivers have to implement, and usb_serial.c, which is basically the simplest possible implementation of such a driver
18:56:23gevaertsThat should cover you on the USB side
18:56:51gevaertsThere's also some configuration UI stuff of course, but I don't know much about that
18:57:13gevaertsFor the SCSI protocol, usb_storage.c is our implementation of plain-disk stuff
18:58:06gevaertsWhat you're looking for to extend that to CDROM emulation is the SCSI MMC documents
18:58:37gevaerts(and other SCSI stuff of course, if you haven't done any of it before)
18:58:43JoNilThanks, i will start to read immediately and write an application :D
18:58:53gevaertsGreat!
18:59:28Aylagevaerts, you are mentoring multiple projects?
18:59:35gevaertsThe SCSI documents may be a bit hard to find, I believe they may require registration these days, but there should be public drafts
19:00
19:00:10gevaertsAyla: we haven't decided on who mentors which project yet. In principle we don't have more than one project per mentor
19:00:21Aylaok
19:00:28gevaertsIf you have trouble finding the relevant SCSI specs, ping me
19:02:32JoNili will :)
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19:24:29GodEater_if our git repo still read-only ?
19:24:32GodEater_s/if/is/
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19:52:45bertrikAlexP, you aren't delaying the 3.8.1 release anymore because of AMSv2 SD problems, right?
19:52:50bertrik(just asking to be sure)
19:53:10AlexPbertrik: I don't really know what I'm doing
19:53:26AlexPI've done all the builds, if you are happy then we can go ahead
19:55:22saratogado it!
19:55:36AlexPrighto
19:55:49*AlexP looks around for Bagder or Zagor
19:58:02bertrikI'm quite convinced now that my AMSv2 sd changes have been overall improvements since I haven't seen negative reports except for the one from Luca_S and eventually he couldn't bisect it to a specific change.
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19:59:08tguinotAlexP: maybe http://www.badgerbadgerbadger.com/
19:59:21*tguinot running away
19:59:43AlexPthanks, but... :)
19:59:44gevaertstguinot: are you dyslexic?
20:00
20:00:11tguinotof course
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21:08:26kugelI'm working on my relocatable/multiple plugins application. What would we like to see most first implemented with the new powers?
21:08:56kugelmetadata parsers on audio buffer/pebbles/multiple plugins?
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21:10:09kugelOR how should I write that it's TBD?
21:11:52CIA-87New commit by 03Buschel (r29682): Fix FS #12043. Next track was resumed when pausing and shutting down the player in the last seconds of a track.
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21:12:30gevaertskugel: I'd say that relocatable metadata parsers *are* multiple plugins :)
21:12:48kugelok, multiple "rocks"
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21:13:59gevaertsTo be honest, as soon as the mechanism is there, I don't care
21:14:29gevaertsHaving TSR plugins loaded somewhere else is trivial if there's an example of a loader that can do that
21:14:36kugelwell, it's been argued that the mechanism alone is not enough for gsoc
21:15:43gevaertsright
21:15:52gevaertsWell, I'd do TSR plugins first
21:16:01gevaertsBecause they're trivial :)
21:16:15gevaertsmetadata stuff and pebbles need thinking about APIs
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21:17:24kugelwould be fine with me; but I guess that for some people it's not enough to add something trivial to a too small project
21:17:33CIA-87r29682 build result: All green
21:18:47kugelalso, it may actually be not that trivial if many plugins need changes to allow for relocation
21:19:20kugelon a slightly related note; has anyone managed to have a first look at my buflib application yet?
21:19:36gevaertsA very brief first look, yes
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21:21:57kugelI still welcome comments on it :)
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21:23:52gevaertsYes, I know :)
21:24:02gevaertsBusy at work, and tired...
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21:29:13b42Zagor: i wanted to ask how much "Understanding for multi-tasking" do i have to have
21:29:56b42and if you can point me to files containing the current playback code, so i can take a look
21:30:49kugelb42: playback.c, audio_thread.c, pcmbuf.c, buffering.c essentially
21:30:58jhMikeSBuschel: argh! I saw your ping but didn't see you around. Is that going to work if playlists are shuffled?
21:31:24kugelb42: there are 3 or 4 threads involved for audio playback
21:31:57Zagorkugel: and abrepeat.c, codecs.c, cuesheet.c, dsp.c, eq.c, playlist.c, replaygain.c, plus some more
21:32:11b42kugel: thanks
21:33:37b42lots of files ... i guess i should have started sooner
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21:34:06BuscheljhMikeS: if you are talking of shuffle playback -> yes
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21:34:22gevaertskugel: have you considered tacking a relocatable plugin loader on to the other application "if time permits"?
21:34:36Zagorb42: I don't recommend this task if you are not already familiar with rockbox. it really goes to the core and touches pretty much everything.
21:34:42jhMikeSBuschel: yeah, because of the keeping of the current song
21:34:59kugelgevaerts: not yet, but it sounds like a good idea
21:35:31b42Zagor: my only experience was trying to fix brickmania plugin once
21:35:53b42so i guess i'll take your advice and save me some time
21:36:22BuscheljhMikeS: btw, what is the desired resume track / position in case of pause/shutdown during a crossfade activity? ;)
21:37:19jhMikeSBuschel: I would go for resuming whatever the WPS shows
21:38:16Buschellet's see
21:39:33 Quit leavittx_ (Ping timeout: 252 seconds)
21:40:11jhMikeSthat's how it would work with my patch anyway
21:41:18Buschelcurrent svn (including my last change) will resume the track that is shown in the WPS in the case of ongoing crossfade
21:41:40BuscheljhMikeS: did you rework the playlist engine or the whole playback engine?
21:42:38 Join Keripo [0] (~Keripo@SEAS059.wlan.seas.upenn.edu)
21:42:57AlexPZagor: I have 3.8.1 ready, do you have a little time to try an upload?
21:43:07Zagorsure
21:43:11AlexPcool
21:45:27 Quit Keripo (Client Quit)
21:49:31 Quit ChickeNES (Quit: Computer has gone to sleep.)
21:49:56jhMikeSBuschel: playback engine and codecs and worked the best I could with playlists
21:52:19jhMikeStrack switching is very direct and codecs under strict control, things like rewinding at the end of a playlist or at transitions just work
21:53:24Buschelwill you upload your patch to flyspray? I am interested whether some of the good old bugs might be fixed (e.g. FS #10930, FS #11495)
21:55:16saratogajhMikeS: did you recent changes break test_codec's wav write feature?
21:55:41 Quit benedikt93 (Quit: HIP-HOP sounds best when you listen to METAL instead.)
21:55:46saratoganow it either doesn't decode or reboots my player when I try it
21:55:58BuscheljhMikeS: a somehow related question -> Do you mind if I close FS #11863 ?
21:56:38 Join leavittx_ [0] (~lev@89.221.199.187)
21:57:24*jhMikeS doesn't mind
21:57:56jhMikeSsaratoga: It shouldn't bother that at all
21:58:46saratogathe previous changes are all mine, and it worked after those
21:58:48jhMikeSchanges I made and committed or recent developments?
21:59:06saratogachanges to test_codec
22:00
22:04:16Buschelsaratoga: did you see my comments to FS #12046?
22:04:38saratogaBuschel: yes
22:04:44saratogai'm curious how that happened to the file
22:04:59Buschelis it yours?
22:05:35Buscheland did it work before?
22:09:47Buschelbtw, decoding to wav works on sim
22:10:20jhMikeSsaratoga: hmm...trying to see how that would touch wavwrite
22:10:43saratogaBuschel: no, from ABI
22:10:49saratogauser says he used iTunes a couple years ago
22:10:54saratogabut hte file doesn't look like one from iTunes
22:12:54Buschelhowever, our mp4 parser is not robust enough to play this file...
22:13:22 Join liar [0] (~liar@83.175.83.185)
22:13:40 Join petur [0] (~petur@rockbox/developer/petur)
22:16:21CIA-87New commit by 03alex (r29683): Tag 3.8.1 release
22:17:33CIA-87New commit by 03bluebrother (r29684): deploy.py: insert version number into sources. ...
22:21:30jhMikeSBuschel: I haven't bothered to know the playlist code that well though. Is 'index' always the unshuffled index and never changes?
22:21:58saratogaif the frame has the wrong length, how do other parsers deal with that i wonder
22:22:29CIA-87r29684 build result: 10 errors, 0 warnings (bluebrother committed)
22:22:50bluebroth3rwtf?
22:23:54gevaertslooks like a built client error
22:24:15bluebroth3ryep. File truncated looks a bit like disk out of space
22:26:04BuscheljhMikeS: seem so
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22:31:09 Quit TheLemonMan (Quit: Destructor called)
22:32:50 Quit Buschel (Ping timeout: 276 seconds)
22:40:58 Join bug2000 [0] (~bug@unaffiliated/bug2000)
22:41:14bug2000OK, it seems the charge from PC isn't perfect on the sansa clip.
22:41:24bug2000I left it at "no usb mode" and it over hear.
22:41:43bug2000How much damage have been caused to the clip in your estimation?
22:42:24AlexPI don't quite follow
22:42:33AlexP"over hear"?
22:43:01AlexPoh
22:43:03*AlexP twigs
22:43:07AlexPover heat?
22:43:13bug2000*over heat.
22:43:14bug2000Sorry.
22:43:20AlexPno problem :)
22:43:39AlexPI would hope none, have you tried to use it?
22:47:27bug2000AlexP: Not yet. It's hot.
22:48:49bug2000AlexP: It seems to be worknig though.
22:49:02AlexPgood news
22:49:38bug2000AlexP: Think the battery life got shortened?
22:49:48AlexPI honestly don't know
22:49:49gevaertsDid it get hot, or did it overheat?
22:49:58bug2000gevaerts: it got REALLY hot.
22:50:00gevaertsBatteries do tend to get rather hot when charging
22:50:14bug2000gevaerts: Hot to the level it hurted to touch the clip.
22:50:27boghogi'm still amazed my android phone doesn't melt whenever the thing is charging
22:50:31boghogalmost too hot to touch
22:50:58bug2000O_o
22:51:24 Join ihateseptictanks [0] (~ihatesept@173-16-100-238.client.mchsi.com)
22:51:30boghogthat said, the display mysteriously got cracked and its in for repairs atm, wonder if that could have something to do with excessive temps :s
22:52:46bertrikgevaerts, lithium batteries are not supposed to get hot
22:54:02bug2000AlexP: By the way, will Samsa v1 ever get 15 hours of battery or is it stuck at 50%?
22:54:13 Join ChickeNES [0] (~ChickeNES@128.135.100.102)
22:54:32AlexPI didn't know they were short, but if they are then yes they might do if someone works on it
22:55:32 Join Keripo [0] (~Keripo@eng248.wireless-resnet.upenn.edu)
22:56:00bug2000AlexP: See for yourself http://www.rockbox.org/wiki/SansaRuntime
22:56:10bug2000[I can verify that stuff in real life]
23:00
23:00:03bertrikhey, I got almost 11 hours on a clipv1, that's certainly more than 50%
23:00:41 Nick kugel is now known as kugelp (~kugel@rockbox/developer/kugel)
23:00:46bug2000bertrik: Really? At top I get 9 hours.
23:01:17bug2000[By the way, does playing spc/flac/ogg/mod/whatever eat the battery more?]
23:01:31 Quit ChickeNES (Quit: Computer has gone to sleep.)
23:02:28bertrikflac needs very little processing power, but will access storage more often too
23:06:05saratogai think FS #11765 gives a couple hours more battery life on amsv1
23:06:21bertrikI wonder if we could try to enable 4-bit mode for sd cards / internal storage again on the AMSv1 players
23:06:28bug2000saratoga: Dunno how to compile rockbox.
23:06:43saratoganot saying you should, just pointing out that its possible to do a lot better
23:07:17 Quit Ayla (Quit: dodo)
23:08:34CIA-87New commit by 03zagor (r29685): Removed some dead code identified by clang-analyzer.
23:08:37 Quit leavittx_ (Ping timeout: 240 seconds)
23:10:41 Quit pamaury (Remote host closed the connection)
23:12:29***Saving seen data "./dancer.seen"
23:12:54CIA-87r29685 build result: All green
23:15:12 Quit Keripo (Quit: Leaving.)
23:22:18 Join silbo [0] (~quassel@193.40.244.204)
23:28:28jhMikeSBuschel: I get interesting result when shuffling the the playlist while playing (you never know what track will resume) :)
23:28:30AlexPZagor: You should (hopefully) have everything now
23:29:58Zagorok
23:34:16 Quit JoNil (Quit: Page closed)
23:34:59jhMikeSBuschel: that's with r29685 unmodified btw
23:35:09 Quit evilnick_B (Quit: Page closed)
23:37:39 Quit n1s (Remote host closed the connection)
23:41:36AlexPRight, I think just tools/builds.pm to go
23:41:46Zagoryes
23:41:48AlexPZagor: Could you let me know when stuff is in place?
23:41:54Zagornow :)
23:41:59AlexPah, cool :)
23:42:13AlexPI don't think voice has changed actually
23:42:24AlexPBut might as well bump it I suppose
23:42:28 Quit Jerom (Quit: Leaving.)
23:42:37Zagoryes, it's more bother to have a split release
23:43:56CIA-87New commit by 03alex (r29686): Bump to 3.8.1 release.
23:44:42AlexPZagor: If you wouldn't mind adding a news item, I'll send some e-mails :)
23:44:47Zagorsure
23:44:52AlexPthanks
23:45:26Topic"Rockbox accepted for GSoC 2011 - Ideas at http://www.rockbox.org/wiki/SummerOfCode2011 | Rockbox 3.8.1 is released | Please read before speaking: http://www.rockbox.org/wiki/IrcGuidelines | Please direct offtopic/social chat to #rockbox-community | This channel is logged at http://www.rockbox.org/irc | An upgrade caused issues with the wiki. We are on the case" by ChanServ (ChanServ@services.)
23:46:48 Join japc [0] (~japc@2.82.179.223)
23:47:50CIA-87New commit by 03zagor (r29687): Release 3.8.1
23:48:09CIA-87r29686 build result: All green
23:50:31AlexPBrilliant, thanks very much everyone
23:51:04Zagorand thank you AlexP for being our tireless release manager
23:51:12AlexPheh :)
23:51:17bertrik\o/
23:51:44 Quit petur (Quit: Leaving)
23:54:15rasher\o/
23:54:57 Quit bluefoxx (Quit: Can we, should we, will we?)
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23:56:10 Join AlexP_ [0] (~alex@rockbox/staff/AlexP)
23:56:40 Quit AlexP (Ping timeout: 252 seconds)
23:57:16 Nick AlexP_ is now known as AlexP (~alex@rockbox/staff/AlexP)

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