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#rockbox log for 2011-04-20

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00:07:05rasherpixelma: http://translate.rockbox.org/missingchars.ini
00:07:23rasherI see Ukrainian is missing a single letter from a bunch of fonts!
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00:08:26rasherIt doesn't list fonts missing more than 50 characters
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00:30:03mishrasaratoga: Hi, do you have a few minutes ?
00:30:16saratogasure
00:30:42pikytcusHey, got a suggestion for rockboxdev.sh. Have a CONFIGOPTS or some other variable to set the configure options (I.E -q) heh
00:31:05pikytcusOr is there another way to do that?
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00:32:00mishraso i was trying some optimisations, is the only way to test the effect of these is to compile and install on device and run test_codec ?
00:32:48saratogamishra: yeah
00:33:06saratogawell you can also check correctness on the sim if you haven't changed any ASM
00:34:50mishrathats what i was asking actually, no assembly for now, but which CPU does the sim simulate, bcoz i am trying some loop optimizations ti increase ILP and it will not necessarily help on each CPU
00:35:29saratogathe sim doesn't emulate a cpu, it just runs on whatever CPU your machine has
00:35:47mishraok
00:35:52saratogatheres really not much point in doing loop optimizations in c, just do them in ASM
00:36:46mishramaybe, but i wanted to try a few just for fun.
00:37:09mishraalso can you tell me where can i get the test file 64kaache ?
00:37:57saratogawe renamed it a couple of days ago, it now this: http://download.rockbox.org/test_files/nero_he_64.m4a
00:39:10mishraoh i see
00:39:40mishraok, thanks a lot.
00:39:42saratogathe old name was kind of confusing
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00:41:57saratogaanyway, gcc does so badly on most of those tight loops that make up the HE code, its probably possible to get a very large speed up just rewriting them in ARMv4
00:42:04saratogaand probably better then 2x on ARMv5
00:42:52saratogaof course the risk there is that you convert something to asm and then realize libfaad was doing something stupid and ffmpeg or android have a better way of computing it
00:46:03pikytcusHey, I just ran rockboxdev.sh for arm, and am trying to configure and build r29750. But it says it cna't find arm-elf-ebi-gcc, which rockboxdev didn't build. It built arm-elf-gcc. Did I break it?
00:46:08mishrayes, i will probably discuss some routines to convert in ASM with you sometime, but not now
00:46:22pikytcusur, spelling fail, but yeah
00:47:11***Saving seen data "./dancer.seen"
00:47:15saratogayou probably picked the wrong compiler
00:47:27saratogamishra: for example: http://svn.rockbox.org/viewvc.cgi?view=rev&revision=28549
00:47:40saratogathe iQMF is used extensively in AAC-HE
00:47:53mishraalso my ipod nano 2g says 380%realtime for mp3 !!!
00:48:03mishrahave not checked for AAC yet
00:48:03saratogaas you can see rewriting it can bring enormous speed ups
00:48:35pikytcussaratoga: Yep I did. Oops! Just ran rockboxdev again and noticed the arm-eabi option. Thanks heh
00:49:33 Quit JesusFreak316 (Ping timeout: 258 seconds)
00:50:33saratogamishra: very nearly the same for AAC-LC, probably about a third that speed for AAC-HE
00:51:11saratogaI should probably update the wiki, that Nano2g scores are quite old
00:52:37mishraBTW, 380% means it takes 3.8 times more time than realtime, correct ?
00:53:39saratogano, it means it takes 1/3.8 times realtime to decode
00:53:51saratogathe MHz column is more useful to compare
00:56:11mishraso we want to increase the % and decrease MHz, but what exactly do we mean by realtime ?
00:58:39saratogareal time means one second of audio decoded per second
01:00
01:05:16mishra129.36% and 148.18 MHz for nero_he_64.m4a
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01:09:52mishra122.64% and 156.30 MHz for nero_hev2_64.m4a
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02:12:44pikytcusHey, is there a way to remove the aliasing on files rb play son th eIPod?
02:12:59pikytcusLike, if you play an spc or mod file
02:21:01pikytcusor not?
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02:28:40pikytcusIs there a way to remove the audio aliasing when rockbox plays stuff at low rates? The gigabeat didn't do it, but the IPod Video does. You can especially notice it on mods and spcs when it plays low notes, they sound all winy and stuff
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02:45:38pikytcusI'm running r29750 if it helps any
02:47:14***Saving seen data "./dancer.seen"
02:58:11saratogaapps/codecs/libspc/spc_codec.h
02:58:31saratogayou can try changing the interpolation settings in there, but probably if its off your processor isn't fast enough
03:00
03:11:40pikytcussaratoga: Ah thanks. I tried setting it to 1 and rebuilding the codec, but the notes still sound really winy, and some of them don't play. hmm
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07:50:34Buschelpikytcus: regarding aliasing on iPod Video -> see FS #10590
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08:17:14*Buschel thinks we should do something on FS #10590 −− the current configuration is... strange...
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08:18:31Buschel(talking of midi)
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08:35:09bluebrotherpixelma: http://www.rockbox.org/wiki/ManualHowto#Windows_47_Cygwin_with_TeXLive
08:35:48bluebrotherworks fine for me :)
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08:53:46pixelmabluebrother: I'll try in the evening if I don't forget. Thanks :)
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09:26:49smkhi. was working on libfaad malloc removal task. i put debug info in faad_malloc (which is where the malloc is being done) to print the number of bytes allocated for every call. i ran the simulator and played some aac (m4a) files. for every song played, there were three calls to faad_malloc, with allocation of 1616,192 and 8192 bytes. This pattern applied for every song.
09:27:23smki tracked the functions making these calls and replaced the calls with static buffer allocations.
09:27:41smkbut now wen i run the sim, i get the SDL_WaitEvent() error
09:28:00smkm not able to link the changes i made to the error obtained :P
09:28:14smkany idea of what SDL_WaitEvent() error is?
09:30:08smkthe error occurs on playing the aac file
09:30:51Bagdersounds like a possible buffer overflow or something
09:31:03Bagdertried running the sim with valgrind?
09:31:30smkbuffer overflows print the stack retrace
09:31:47smkno , didn't.
09:34:54smkBagder: can you elaborate on running with valgrind?.
09:35:19Bagdervalgrind is your best friend to track down memory-related problems in linux
09:35:52Bagderinstall it and run "valgrind ./uisim" and see if it points out any problems
09:36:02smkoh. i will try that then.
09:36:37Bagderif it does, you can make it fire up the debugger on the offending line
09:38:34smkok. when i made the changes first, i got buffer overflow error, which printed the stack retrace and exited. having removed those errors, i got this sdl error. m confused however about how the changes i made caused a UI error :)
09:38:46smkwill run the test though :)
09:39:01n1smemory corruption can cause all kinds of fun errors
09:42:15smkwill see how it goes and be back later.thanks.
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11:18:36ricemark20I have a sansa fuze2 running the latest rockbox. Ogg files are skipping and going back to the same spot in the track
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12:33:39*pamaury take the plunge into the fuze+ lcd code and will only emerge when he's done
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13:00:47v_2eHello! I am a newly registered Roxbox Wiki user, and to complete the registration, I need to be added to the WikiUsersGroup by the existing user. Could somebody please add me? My Wiki nickname is VladimirSmolyar. Thanks.
13:02:37gevaertsv_2e: I've added you
13:03:30v_2egevaerts: Thank you! :)
13:11:17JdGordonamiconn: ping?
13:14:32JdGordonor indeed anyone who knows the ipod video lcd driver?
13:17:21JdGordonis this correct?
13:17:22JdGordon- addr = &lcd_framebuffer[y][x];
13:17:23JdGordon+ addr = (lcd_framebuffer + y * LCD_WIDTH + x);
13:19:51gevaertsIs the quickscreen voiced?
13:20:22JdGordonI want to say no but i remember a patch by sdoyon to make it talk
13:21:04JdGordonyes, it is
13:22:06gevaertsthanks
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13:45:11pamauryfucking imx233, it's impossible to have clock related things work x-(
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14:23:33pamauryTheLemonMan: ping
14:23:43TheLemonManpamaury: hai
14:24:00pamauryhi, did you see my message ? About your first.elf file ?
14:24:08TheLemonManmmh, nope
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14:24:24pamauryyou probably produced this file with sbinfo rght ?
14:24:57TheLemonManyup
14:25:21pamauryyou produced it with an older version which for some reason put the code in program headers but does not create any elf section
14:25:41pamauryAs a result, the code in first.elf is never executed, it's ignored by elftosb2 and my elftosb
14:26:26pamauryYou need to regenerate that file with sbtoelf
14:26:58pamauryYou can see this in the debug output of elftosb2 if you're not convinced :)
14:29:07TheLemonManmmh, i see
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14:30:21pamauryI fixed elftosb to handle files without sections but I thought it would be better to warn you :)
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14:34:48CIA-87New commit by nls (r29751): FS #12072 Improved and updated translation of Romaneste by Sergiu Rotaru.
14:38:20CIA-87r29751 build result: All green
14:39:26n1swoha, over 400 open patches
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15:23:38*pamaury finally had timers working !
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15:26:38*pamaury ...or not :(
15:27:43*pamaury finally yes, stupid error
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15:32:56pamauryI don't understand why the fuze+ resets on power down when I used the timer, and correctly shutdown when I didn't use it !
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15:50:56amiconnJdGordon: This change looks equivalent to me, but why change it that way? The former is more readable imo.
15:51:52JdGordonthe dynamic screen size patch which im still trying to get finished changed lcd_framebuffer to be a pointer... im getting a white screen and a data abort on my ipod video and thats the only change in the videos lcd driver
15:53:42amiconnlcd_framebuffer can't be a pointer, it must be an array. It contains the actual framebuffer data
15:53:59JdGordonyes, on init it is set to the real array
15:54:29amiconnWhy does that patch touch the hardware targets at all?
15:54:34JdGordonhttp://pastebin.com/0xYAnRsX is the full patch, can you please have a look and see why it breaks for the vid? (and presumably other targets)... its working for sdl and android and i was hoping it owuld just work
15:54:53JdGordoni guess we dont want to do s/lcd_framebuffer/_lcd_framebuffer/g everywhere?
15:55:16JdGordonit cant be an array for the targets which use the dynamic screen size
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15:56:07JdGordonFS #11615
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15:59:46amiconnThere are weird constructs in debug_menu.c - not the reason for the crash though
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16:05:09n1sJdGordon: if you want to test just that change it should be easy to do with an otherwise unpatched build
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16:06:12JdGordonI assume its not actually that change that breaks for that lcd though...
16:06:33amiconnstatic const struct plugin_api rockbox_api = { .... NULL, /* will get filled in later */
16:07:08amiconnA const struct is const...
16:07:46JdGordonyou're commenting on the removed line?
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16:08:08amiconnnope
16:08:29amiconnI'm commenting on "will be filled in later" - into a const struct
16:08:46JdGordonit isnt const anymore
16:09:01amiconneek
16:09:19amiconnThen it will work - but waste ram on targets running rombox
16:09:41JdGordonwell thats a matter of some #ifdeffing...
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16:16:19amiconnThe patch changes many things for non-resizable screens as well. For the settings you could replace LCD_WIDTH/ LCD_HEIGHT with MAX_LCD_WIDTH/ MAX_LCD_HEIGHT instead of hardcoding arbitrary values
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16:22:15JdGordonamiconn: sure, the patch isnt completly finished... im hoping you spot the reason the ipod driver breaks?
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16:27:19amiconnCan't spot something suspicious.... just more unfinished/ sub-optimal stuff
16:28:16JdGordonbother :/ yell if you do see some5hing
16:28:19JdGordonbed time for me
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16:51:19tails__where can i find latest android build?
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16:59:30linuxstbtails__: There are no official builds, but I think there are some unofficial builds in the forums.
17:00
17:01:13tails__yep i founded svn r28520 + FS #11615
17:01:36tails__ad there are some builds with static resolution but i don't know version
17:01:42tails__and*
17:02:06tails__though i think it's not nesesary now
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19:01:33smkhi. setup_thread() fails with valgrind. i ran simulator with valgrind. any workaround?
19:02:42smkgetting the error: thread creation failed.retrying.
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19:05:44smkdid valgrind ./rockboxui. it just infinitely prints this message. i am using valgrind-3.6.0.SVN-Debian
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20:11:48bluebrotherhmm, so this Rockbox Utility TTS crash appears only on multicore Windows :/
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20:21:40rasherbluebrother: So say we only support Windows Starter Edition. Problem solved!
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20:24:53CtcpPing from gevaerts!~fg@rockbox/developer/gevaerts
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20:30:02bluebrotherrasher: good idea :)
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20:50:52bertrikTheSeven, any progress with the 4 MB mode on the clip+ yet?
20:59:17pixelmaI wonder if anyone will ever pick up the Iaudio dual boot patch again. Last I remember, people said that the last patch was at least the right approach but this is now 3 years ago or so and nothing happened
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21:00:15pixelmafor people with an X5 this might be interesting as USB host is only supported in the OF, I don't care much for my M5 but I just remembered it and am a bit curious
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21:26:38bluebrotherpixelma: I've reworked the installation instructions for LaTeX a bit and moved them to a separate page: http://www.rockbox.org/wiki/LatexInstallation
21:27:20bluebrotherI think we can make TeXLive the recommended distribution for Cygwin now :)
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21:46:44fmlHello. Would you understand that a negative stereo width means "swap channels"? I'll probably try to implement the "swap channels" feature as a negative stereo width.
21:48:20bluebrotherif it's in the manual ... ;-)
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21:50:40n1sfml: wouldn't it make more sense as a separate option?
21:51:29bertrik"swap channels" sounds like a useless "feature" to me
21:52:08n1syes, me too but i don't think i'd understand what nexative stereo width meant
21:52:13gevaertsHow about an extra "stereo width multiplier" setting, with values 1 and -1? :)
21:52:41gevaertsSome people claim (I have no idea if it's true) that ipods come with reversed channels
21:53:27robin0800gevaerts, urban myth I think
21:53:36n1si've heard this claim too but never from anyone i'd think of as credible
21:53:49gevaertsThere are some other reasons on the forums too
21:54:29n1syeah but there are reasons to implement every obscure feature anyone requests, that doesn't mean we shoukd do it imo
21:54:42n1si think rockbox suffers from feature creep
21:54:42gevaertsTrue
21:54:54gevaertsAnd I guess that's where negative stereo width comes in
21:55:20gevaertsIf I'm not misunderstanding things, it allows to do this by just extending the range a bit
21:56:02bertrikif a stereo width of -100% would accomplish that, I wouldn't be against it (but not particularly care either)
21:56:42fmlgevaerts: yes. "Swap channels" and "stereo width" are orthogonal IMO. With negative width we'd have just one option for both.
21:57:14gevaertsI think it's a good plan
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21:57:32gevaertsNo extra setting, a paragraph in the manual, and more happy people
21:58:13bertrikdoes anyone really want this?
21:58:32gevaertsPeople have asked for it
21:58:53n1si still think it's a very strange way to present the option but i don't really care either
21:59:22n1syou pretty much have to read the manual to understand most settings anyway
21:59:51gevaertsWell, I'd favour a separate setting if it were a rather common thing
21:59:51pixelmaand setting it may be a bit weird as you have to go through other stereo width values
22:00
22:00:05LloreanIf we've got a real name policy, why do we let devs not put their real name in the "real name" field in flyspray?
22:01:22bertrikI'd rather not have this option in the root of the sound settings menu
22:01:39bluebrotherLlorean: because some devs did that before they became devs?
22:01:52bluebrotherbut in general I'd like real names on the tracker too
22:02:49CIA-87New commit by thomasjfox (r29752): Update pandora packaging file ...
22:02:53bertrikby the way, I still think it's a bit confusing that stereo width doesn't work in stereo mode
22:02:58gevaertsI'd prefer real names on the tracker, but I also think that having real names in COMMITTERS and CREDITS (and commit messages for patches by non-committers) is sufficient
22:03:13Lloreanbluebrother: Like the wiki, shouldn't we object to anyone putting false information in the "Real Name" field? Either don't require it, or require it to be accurate, but requiring it and not caring about accuracy kinda is pointless.
22:04:07gevaertsgood point
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22:04:38bertrikLlorean, I agree.
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22:06:16bluebrotherLlorean: I agree. The only drawback might be those users that want to report a bug and are not willing to reveal their real name.
22:06:22bluebrotherthough those could post on the forums.
22:06:26CIA-87r29752 build result: All green
22:06:45gevaertsbluebrother: well, that one would be covered by "don't require it"
22:06:51LloreanOr we could not require people to enter a real name.
22:06:56LloreanI hope we can have "optional" fields
22:08:07bluebrotherI think it would be at least good if committers put their real name on Flyspray. It's in COMMITTERS anyway, so there's no point in not using it in the tracker
22:08:35LloreanThis is true.
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22:14:39bertrikdoes anyone object to moving the target-specific parts of the serial driver in firmware/driver/serial.c to the target trees?
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22:23:16n1sReal Names in the tracker would help against patches that are posted by some nick and then we have to ask for a real name and sometimes noone answers
22:24:53bertrikn1s, indeed, that's extremely annoying
22:35:17fmlHrm... Implementing negative stereo width would require changes in two assembler functions (ARM and CF asm) which I wouldn't want to do.
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22:39:00AlexPWhat is negative stereo width?
22:39:57fmlAlexP: usual stereo width + swap channels
22:40:03gevaertsAlexP: a neat trick to implement inverting channels without adding a setting, while at the same time confusing people who haven't read the manual
22:40:14AlexPfml: Is that standard terminology?
22:40:33AlexPIt would have confused me
22:41:03fmlAlexP: then I won't implement it :-)
22:41:30AlexPI'm not sure what I think to be honest :)
22:43:13bluebrothern1s: yes. IIRC I argued the same way some time ago :)
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22:52:29TheSevenbertrik: no, i'm still digging through the bootrom disassembly
22:56:49iHateSepticTankshello developers. I LOVE YOUR SOFTWARE. thanks guys! I had a quick question though. is there a way to speed up a 4K sector hard drive in an ipod video.? im only getting about 4MB/sec thoroughput on it, and the original disk gets more.
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23:01:45wodzrockchip doc is so cryptic about lcd module that I can't understand how to make lcd update in buffered mode :/
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23:44:08*bluebrother sees the G3 protocol messages coming from his dock
23:44:23bluebrotherbut why doesn't it work with Rockbox then? I thought that is supported
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23:51:36saratogaits reverse engineered, its possible theres some missing commands
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23:56:59 Quit ender` (Quit: Stupidity cannot be cured. Stupidity is the only universal capital crime; the sentence is death. There is no appeal, and execution is carried out automatically and without pity. -- Robert A. Heinlein)
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