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#rockbox log for 2011-05-18

00:01:16 Part toffe82
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00:07:32 Quit ender (Quit: Sex is dirty - if you do it right. -- Isaac Asimov)
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00:20:48keyb_grjhMikeS: Regarding your adventures in pictureflow, much the same happened to me at one time. Could use an abort function indeed.
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00:24:46 Join funman [0] (~fun@rockbox/developer/funman)
00:29:37CIA-16New commit by funman (r29895): don't install boomshine.lua if lua.rock isn't built
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00:30:16funmanno boomshine on clipv1 :(
00:33:43CIA-16r29895 build result: All green
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04:32:46JoshuaChangseems the as3525v2 has a huge 1mbytes of iram?
04:41:14saratogayeah
04:41:23saratogaits all used by codecs though
04:41:36saratogaso the IRAM defines are preprocessed out
04:42:49JoshuaChangcan i use ICODE_ATTR define in dsp.c's function?
04:45:43saratogayes but they won't do anything
04:45:54JoshuaChangwhy?
04:46:34saratogalet me double check, but I believe the codecs get the full 1MB
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04:47:34JoshuaChangnono, i have no as3525v2 device, just wondering it's size
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04:47:46JoshuaChangmy target is cowon d2
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04:49:38saratogaactually no, theres 0x8000 bytes of IRAM reserved for core
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04:55:12JoshuaChangwill the ICODE_ATTR in function cost lots of iram?
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04:59:26saratogait just puts your function into IRAM, so it costs however many bytes your function takes up
04:59:39saratogayou can check in the rockbox.map file
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05:05:02JoshuaChangthanks
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10:43:05kugeln1s: intermediate constraints work with inline
10:43:26kugelsee set_irq_level() on ARM
10:43:57kugelbut you may need to enforce inline
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10:51:21n1skugel: gcc spat a "impossible constraint" at me and i didn't look further
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11:12:52***Saving seen data "./dancer.seen"
11:14:56B4gderwill we reach r30000 in time for devcon?
11:19:37kugeln1s: try __attribute__((force_inline)) (or do we have FORCE_INLINE_ATTR already?)
11:19:46kugelit does work on arm
11:23:15n1si'll look at it later
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11:41:32JdGordonB4gder: sure, just do commit, revert, commit, revert as needed
11:41:41B4gderthat's cheating!
11:42:33JdGordonok, commit, "fix red", "fix yellow" etc
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11:44:43Floodeur_081yop
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14:40:56kugelHrm, TALK_PARTIAL_LOAD re-implements an LRU mechanism. it should use the existing functions (what the font engine uses) IMO
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15:18:28kugelno, lru alone is pretty useless
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16:54:09deeiceHi, I have a code question. I'm building for the Zipit as an SDL app, Do I need CODEC_SIZE 1MB, PLUGIN_BUFFER_SIZE .5MB, or is that just wasted space in an SDL app?
16:55:14gevaertsI'd leave them
16:55:34gevaertsIn an app unused bits are only virtual anyway
16:56:05deeiceReally, because when I build for plugins the executable is much bigger.
16:56:16gevaertshm
16:56:20*gevaerts isn't entirely sure
16:56:28deeiceI thought maybe it was the extra .5MB.
16:56:45gevaertsThat should be bss
16:56:47deeiceThen someone told me they were using the plugins on an exe not built for them.
16:57:57gevaertsYou could have a look at the map file to see what happens
16:58:44deeiceWhat's the map file?
16:58:57gevaertsPart of the linker output
16:59:04gevaertsIt tells what went where
17:00
17:00:28deeiceOh, ok. I'll compare with and without plugins. And maybe I'll see what happens with a tiny (or 0) CODEC_SIZE.
17:02:52gevaertshm, there's no map file for the app build apparently :\
17:03:40deeiceIs it just a linker option? I could add it to my zipit link flags.
17:04:19gevaertsyes
17:04:32gevaerts"-Wl,-Map=rockbox.map"
17:04:59deeiceyeah, just found that. I'll add it to my zipit patch.
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18:03:26n1sthis asm code isn't exactly beautiful
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18:03:57n1si wonder why gcc no longer does this sanely though...
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18:06:18n1sah, it was the inlining
18:06:33n1sprobably due to building with -Os
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21:08:59travelerare the standard c functions for file reading used in rockbox as well, or is it limited to the file functions defined in the api?
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21:10:38traveleror would one use the ssize_t function to read a binary file?
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21:16:43bertrikAFAIK, the rockbox file API attempts to be posix-like but there is probably no guarantee of exact compatibility
21:20:39bluebrotherssize_t function?
21:22:39travelererr read function; ssize_t read(int fd, void* buf, size_t count)
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21:49:13saratogasince a bunch of people have reported problems with the fuzev2 overheating at max brightness, anyone mind if I cap the brightness a little lower?
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21:49:22saratogai wonder if we're overdriving the LED or op amp
21:49:50amiconnIirc the brightness on c200 is also capped (to the same value as in the OF)
21:50:05sideralsaratoga: sounds like a good idea to me
21:50:33saratogawould 20 be a reasonable value? currently we allow up to 25
21:51:15bertriksaratoga, from some of the reports I got the impression that something is permanently damaged somehow
21:51:53bertrikI think also someone noticed that the DC/DC for backlight is somehow set up differently for the fuzev2 than for other AMS targets
21:51:53saratogathe forums thread mentions the device becoming too hot to hold, so i imagine something inside could be melted
21:52:11Berematyikes
21:52:21saratogait may be that its damaged by running current too high, and burns otu into a short circuit
21:52:26bertrikSomething like voltage mode vs current mode IIRC. I think sideral or ranma mentioned this once
21:52:28saratogawhich is why it gets so hot
21:53:37saratogaif we're running it in the wrong mode i wonder if the brightness steps actually work, or if it quickly just saturates at max brightness and further levels just leave it at rail voltage
21:54:02sideralbertrik: that's right, there is a difference that I found looking at the AS3543 register dumps in FS #11915
21:55:15sideralhttp://www.rockbox.org/tracker/task/11915#comment38755
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21:56:35saratogafor now i'm going to just clamp it at 20
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21:56:50bertriksaratoga, sounds like a good idea
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21:57:52CIA-16New commit by saratoga (r29896): A few people have reported problems running the fuzev2 LCD at max brightness. I don't have one of these players, but as a precaution lets lower the ...
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22:00:02sideralThis could be a candidate for the 3.8 stable branch as well
22:01:48CIA-16r29896 build result: All green
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22:04:22CIA-16New commit by funman (r29897): thumb-cc.py: simplify
22:04:49kugelsaratoga: I remember the upper levels don't visibly change the brightness noticeably; but I haven't used my fuzev2 in ages
22:05:16saratogakugel: any chance you could check what the highest level is that makes much difference?
22:05:52kugellucky you, my fuzev2 is in my reach :)
22:06:39CIA-16New commit by Buschel (r29898): Reduce FRACMUL calls in equalizer.
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22:07:25kugelsaratoga: I remembered wrong, the steps are still noticeably upto 25, however not as much as in low levels. 20 looks like a good cap
22:07:49saratogaok good
22:07:50CIA-16r29897 build result: All green
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22:09:36kugelI never actually used mine above 6 or 7
22:09:37bertriklinear steps make it work like that, to get a more linear curve w.r.t. human eye response, the actual curve should be more like an exponential
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22:11:13CIA-16r29898 build result: All green
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22:12:47sideralamiconn: Any comments on FS #12107?
22:13:04kugeln1s: do you know how much impact it would have if the intermediate constaint was removed/replaced? I don't like functions implicitely requiring literals very much
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22:15:42*kugel is unsure what to do about filetypes.c/tagtree.c with lots of tiny buffer_alloc()s used in a strdup() like fashion
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22:16:31kugel(w.r.t. to my buflib project)
22:17:29gevaertsProbably not a good idea to make all those separate (tracked) allocations
22:18:22kugelright
22:18:51gevaertsMaybe allocate larger chunks at a time? That will waste a bit, but less than the metadata you save
22:19:44kugelbut that complicates the code (allocation and dereferencing) :(
22:20:28gevaertsThat's why you get several months to do this :)
22:20:56gevaertsseriously though, yes, but i don't see a real solution
22:21:06kugelI want to make allocations resizeable (or realloc'able). perhaps alloc a private pool which can grow if needed (in chunks)
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22:21:33gevaertssomething like that would work yes
22:22:06gevaertsBut I wouldn't immediately discard the idea of having several allocations instead of one resizeable one
22:23:41gevaertsI mean, at this point I suspect it's not clear if you want few big allocations or lots of smaller ones to make compaction easier
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22:32:59kugelgevaerts: the easiest seems to be separate buffers for vectors holding the pointer and the variable data (so only the first needs to be fixed up and can be traversed like an array)
22:35:10*gevaerts nods
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23:12:12n1skugel: it'll cost a temp register (d reg IIRC) and one or two intructions depending on how stupid gcc is
23:12:32n1si don't know if this macro is used in anything speed critical though
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23:13:32n1slooks like you can actually specify a "id" constraint though, so gcc can use an intermediate if it is clever enough but a reg if it isn't which would work nicely i think
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23:14:17n1sah, it needs a slight rework, doing it that way
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23:15:32n1sit's been a long time since i poked coldfire asm
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23:22:04n1sexcept for the setting of coeffs for various dsp things, the FRACMU_SHL macro, which is the one with the immediate value problem is only used in the compressor code
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23:29:02kugeln1s: FWIW, I regardless agree with making them inlines
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23:29:37n1si'll probably try to work something out when i am more awake and have the time :)
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23:32:02n1sah, there is a simple but slightly inefficient solution
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23:48:50ReimuHakureihm
23:49:41ReimuHakureiThis Sansa Fuze is less than a week old (restored to stock firmware before it completely fried) - would it be faster to RMA via Amazon or SanDisk?
23:49:43ReimuHakureilol
23:51:55[Saint]That's outside (far outside) the scope of this IRC channel.
23:52:19[Saint]"/topic #rockbox" will give you some info there.
23:52:21ReimuHakurei</ot>
23:52:37ReimuHakureioops =P
23:52:59ReimuHakureiforgot about #rockbox-community, it's been a while
23:52:59ReimuHakureilol
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