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#rockbox log for 2014-05-19

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00:06:13***Saving seen data "./dancer.seen"
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03:27:56*the-kyle thought he was supposed to come back. winderz doesn't work either?
03:28:21the-kyleOMG
03:28:43[Saint]the-kyle: errrrr...?
03:28:50[Saint]Lets try this again, shall we?
03:29:11the-kyleYeah, wrong winder.
03:30:09the-kyleSecond time i've done that in the past week I think. I'm really slippin' lol.
03:31:18[Saint]I think it's pretty hard to break my record for mistaking IRC as a shell.
03:31:48the-kylelol
03:31:51[Saint]I've exposed login details to more services that I can think of.
03:32:23the-kyleWoe now that's really bad. I think I've only done that twice. ... I think.
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04:06:18***Saving seen data "./dancer.seen"
04:15:02[Saint]Would not having repeat and shuffle settings immediately visible in the wps be a Very Bad Thing(tm)?
04:15:47[Saint]I've put them in an overflow menu instead but I have the feeling this might piss people off.
04:17:19[Saint]volume is in there too.
04:17:56[Saint]and browser and playlistviewer.
04:18:28[Saint]I guess I could find some room to display the repeat and shuffle state in text?
04:18:56[Saint]I just don't want to have a button/toggle on the main screen for aesthetic reasons.
04:20:50[Saint]It seems that almost every music player for touchscreen ever has a panel down the bottom like: | repeat | |<< | |> | >>| | shuffle |
04:21:12[Saint]But I just have: | |<< | |> | >>| |
04:38:32JdGordon[Saint]: hidden features isnt very nice
04:39:15[Saint]I wouldn't call them hidden per se - its exactly similar to the Android overflow menu
04:39:32[Saint]Three dots in the top right corner bring up the overflow.
04:40:06JdGordonah, that might make it better
04:40:08JdGordonscreenshot?
04:44:09[Saint]I don't have it all quite stuck together yet in a fashion that works the way I want it to - I'm just hashing things out presently. Looking at it now I think the icons I have chosen for the media toggles are too large and there will be room for shuffle and repeat toggles.
04:44:46[Saint]But that will be *reaaaaaaaaally* annoying because I stole them from the Tango! project and there isn't shuffle nor repeat icons in the set. :-/
04:45:26[Saint]And there's a reasonably odd gradient texture on the images.
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04:46:27[Saint]I need an artist.
04:48:29[Saint]Someone who can make repeat and shuffle versions of these: http://imgur.com/a/pOGCH#0
04:49:28[Saint]Holy shit - imgur just destroyed those files.
04:52:13[Saint]Heh. They look nothing like that. One sec.
04:53:00[Saint]http://imgur.com/a/7JxzS
04:55:15[Saint]Ohhhhhh! There are shuffle/repeat icons in the set.
04:55:17[Saint]Kinda.
04:55:28[Saint]They don't entirely match, though. :-/
04:56:44 Quit dfkt (Remote host closed the connection)
04:57:40[Saint]JdGordon: do you think I could get away with using http://imgur.com/a/b66vf with the above lined set?
04:58:30[Saint]they're GNOME status icons.
04:59:41ParkerR[Saint], what theme are you working on?
04:59:46[Saint]I used Tango! to a: keep in line with the existing icon set, and b: be lazy because I'm not much of an artist and someone already made nice icons with a suitable license.
05:00
05:00:37[Saint]ParkerR: The intention is to make an easily portable touchscreen theme that should scale easily between resolutions.
05:00:49ParkerRAhh
05:01:00ParkerRSo indirectly helping android... ;P
05:01:43[Saint]So, large, high quality master images, and clean, commented code that you should intheory just be able to generate a set of images for (or using existing sizes) and plug in a few values here and there for a new port.
05:01:55ParkerRAye
05:01:55[Saint]Instead of having to basically do the whole thing from scratch.
05:02:14ParkerRDoes RB su[[prts SVGs as icons?
05:02:19ParkerR*support
05:03:18[Saint]I'm trying to do a lot of the UI element placements using negative viewport offsets and full width viewports so that wherever possible when porting to a new resolution one needn't edit too much at all.
05:04:13[Saint]ParkerR: no, we don't support SVG icons. But we do support antialiased bitmaps for some time now.
05:04:31ParkerRNice
05:05:45ParkerRYou know what just came to mind but probably wouldnt be worth porting? rockbox for DS
05:06:55[Saint]As you can see, the Tango! icon set looks *very* sexy with antialiasing at high resolutions
05:06:56[Saint]http://imgur.com/oMNoNUG
05:07:19[Saint]That is a 128px icon set that I generated from the script located in our sources.
05:07:53[Saint](had to convert to .png because imgur seems to *really* dislike bitmaps with an alpha channel and they all look terrible when I upload them)
05:08:45[Saint]Those are just the viewers icons - oh well, you get the idea.
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05:10:34ParkerR[Saint], Cool. My only thought owning a clip Zip: What are these icons you speak of? :P
05:11:07 Quit JdGordon (Ping timeout: 265 seconds)
05:11:16[Saint]Are they disabled completely, or is the icon set just scaled impossibly small?
05:11:26ParkerRI think I idsbled them :P
05:11:30ParkerR*disabled
05:11:52[Saint]Ah, right. Now you can fit 5 characters in a row on screen at a time instead of 4. ;)
05:11:58ParkerR:P
05:12:08ParkerRSo much more room for activities!
05:12:57[Saint]For some hilarity, play DooM on ultraviolent
05:13:15ParkerRHAH
05:13:18[Saint]You can't see the enemy sprites until you're dead, basically. Its hilarious.
05:13:19ParkerRheh :|
05:13:30 Quit JdGordon_ (Ping timeout: 240 seconds)
05:13:34[Saint]Everything gets scaled so tiny they need to be right in fron tof you before you see them.
05:13:42[Saint]Its very cute.
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05:13:54ParkerRIve played in normal
05:13:59ParkerRWas kinda fun
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05:14:06[Saint]Its near impossible on the Clip/+
05:14:47[Saint]And possibly an epilepsy trigger.
05:16:07ParkerR[Saint], https://cdn.mediacru.sh/rvfisA_ANnbZ.jpe
05:16:18ParkerRYes it supposed to be missing the g
05:16:24ParkerRThe host is weird
05:17:37[Saint]Obviously the g fell off as a result of the crushing.
05:17:46ParkerRheh
05:22:11ParkerR[Saint], so yeah basically small font plus no icons
05:22:45ParkerRGot it small enough so the homescreen doesnt have to scroll
05:23:02JdGordongrr.... internet fell over apparently
05:23:07[Saint]On my iPods, I use the fallback theme and default (as in not cabbieV2) icons
05:23:08JdGordon[Saint]: yeah, those icons look fine i think
05:23:19[Saint]So, I'm kinda used to minimal hideous themes.
05:23:30ParkerRHeh
05:23:57[Saint]JdGordon: I'll probably need to lighten them up a few shades to match.
05:24:16[Saint]They'ye currently a bit darker but they're vaguely similar.
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08:06:23***Saving seen data "./dancer.seen"
08:08:30copper03:23:08 UTC <[Saint]> On my iPods, I use the fallback theme and default (as in not cabbieV2) icons
08:08:39copperI don't get what that is supposed to gain you
08:09:15copperyou have this weird obsession about saving the very last byte
08:09:45[Saint]A high contrast, low resource theme with a metric fucktonne of display data, is what it gives me.
08:10:16copperscreenie?
08:10:31coppernm
08:10:52 Quit kugel__ (Ping timeout: 255 seconds)
08:11:18coppermy iPod Video sim segfaults when trying to switch to the fallback theme
08:11:26copperer, rockbox_failsafe
08:11:58coppercorrection, it segfaults when trying to switch to any theme
08:12:17[Saint]Awesome.
08:12:37copperI wiped out the config file
08:12:44copperI don't see the metric fucktonne of data
08:12:59[Saint]Compared to most themes.
08:13:18coppermy themes display the same stuff
08:13:34copperare we talking about the same thing?
08:14:11copperthis? https://outpost.fr/tmp/pXB.png/
08:14:14[Saint]I don't find the contrast on your themes to be high enough.
08:14:19 Join ender` [0] (krneki@foo.eternallybored.org)
08:14:24[Saint]Except for the weird dark blue I don't like.
08:14:37[Saint]And, I like icons. ;)
08:14:39 Nick kugel_ is now known as kugel (~kugel@rockbox/developer/kugel)
08:14:59copperbut you make your own themes
08:15:06copperwhy would you suffer rockbox_failsafe?
08:15:26[Saint]I make themes for others. Not myself primarily.
08:15:55copperyou're weird!
08:16:38[Saint]I have specific tastes.
08:17:01[Saint]My main menu only has File Browser, Now Playing, and Settings in it. :)
08:17:19[Saint]Everything else is useless cruft to me.
08:17:27copperthat's not a theme thing
08:17:46copperI mean you can have that with any theme
08:17:54[Saint]Well, no. But ts a fairly clear indication if minimalist tastes
08:18:00[Saint]*of
08:19:25[Saint]I like working with and making fancy, shiny things. I just don't use them often on a device I rarely ever see the screen of.
08:19:41[Saint]Touchscreen on the other hand is a whole other ballgame.
08:20:49[Saint]There, its impossible to not interact with the screen so high contrast, usability, *and* pretty things come out to play.
08:22:09 Join LinusN [0] (~linus@giant.haxx.se)
08:23:27[Saint]I would probably use the failsafe on touchscreen too if it didn't mean having to use grid mode instead of absolute point in the wps.
08:24:52 Quit Guest72256 (Ping timeout: 252 seconds)
08:28:40[Saint]copper: primarily I like the challenges involved in making a theme that "just works" all across the board.
08:28:59[Saint]I find building locale awareness into themes interesting.
08:31:53copper[Saint]: don't you use a smartphone for actual music playback?
08:32:24[Saint]It depends on the situation.
08:33:16copperdid you get my bit about MP3 streaming over bluetooth btw?
08:33:55copperI don't know if that ever existed, and it would disable all and any DSP
08:34:13copperit's a neat idea, but not very practical
08:34:16[Saint]If transporting my iPod and amp isn't going to be problematic then I'll take it with me, but I'm happy to fall back to just my phone.
08:36:17[Saint]A2DP MP3 direct streaming most certainly exists, or existed.
08:40:54copperwell, I'm going to try an apt-X receiver with my apt-X phone
08:43:17kugel[Saint]: bluetooth audio always implied transcoding
08:43:50[Saint]I'm positive there's a direct pass through mode.
08:43:58kugelthere isn't
08:44:17 Join olspookishmagus [0] (~pookie@snf-137798.vm.okeanos.grnet.gr)
08:44:26kugelnot by specs anyway, perhaps exotic actual hardware offers this
08:44:41 Nick olspookishmagus is now known as Guest99650 (~pookie@snf-137798.vm.okeanos.grnet.gr)
08:44:55kugelin the same way stuff like apt-X is non-standard as well
08:45:07[Saint]It is optional, indeed.
08:47:10[Saint]"As of PulseAudio 1.0, we support passthrough output of compressed formats. This allows us to directly support passing compressed audio to hardware that supports it. Currently, the only hardware for which we support this is A/V receivers plugged in over S/PDIF or HDMI, but this can include hardware decoders on SoCs and streaming MP3/AAC/... to Bluetooth headsets that support it in the future."
08:47:11copperapparently my phone will tell me explicitely that apt-X is used
08:48:07kugel[Saint]: it's not optional, it's non-standard
08:48:27kugelbluetooth specs require transcoding
08:48:28[Saint]Semantics.
08:48:57copper"Encoding audio that has previously been encoded with MP3 or AAC introduces additional artefacts to the already compromised audio. Native streaming is an option for MP3 or AAC, but if the source is a mixture of uncompressed, AAC or MP3 seperate decoders will be needed for each algorithm. This leads to a more complex and unwieldy headset design, which has to choose between decoders depending on the source material. A better solution is to choose the mos
08:49:09copper"Native streaming is an option for MP3 or AAC"
08:49:32copperhttps://web.archive.org/web/20100808133404/http://www.aptx.com/Documents/Bluetooth-Datasheet−−-SBC-comparison.aspx
08:50:37[Saint]Right. I'm not saying its the holy grail or anything - but I think we can agree at this point that it exists, no?
08:51:05copperapparently
08:51:37copperit sure would be nice to have that option for people who don't care about DSPs
08:51:39kugelI haven't seen one in the wild but it probably exists
08:52:45copperhttp://www.hydrogenaudio.org/forums/index.php?s=&showtopic=78217&view=findpost&p=684227
08:53:08coppereh, only took me 4 years ago to find compatible hardware
08:53:13copper-ago
08:53:56[Saint]I'm fairly certain the funny little Nexus thing that flopped so miserably did direct passthrough over BT.
08:54:07[Saint]I seem to recall that was where I learned it was a thing.
08:54:23copperwhat Nexus?
08:56:05[Saint]Nexus Q
08:56:18[Saint]That funny little media portal no one ever purchased.
08:57:27copperoh, the sperical thing?
08:57:30copperspherical
08:57:39*[Saint] nids
08:57:47[Saint]*nods, even
09:00
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09:16:07 Nick Guest99650 is now known as olspookishmagus (~pookie@snf-137798.vm.okeanos.grnet.gr)
09:16:52kugel[Saint]: it didn't flop as it was never released :)
09:17:52[Saint]Err....no?
09:18:33[Saint]Ah. Yes.
09:18:43coppermaybe?
09:19:15[Saint]It wasn't "released", but all the stock was handed out to conference attendees and those who preordered.
09:19:20kugelafaik it was cancelled, and only early pre-orderers got one
09:19:32copper[Saint]: most likely your bluetooth audio will be transcoded
09:19:43copperand if you're lucky, it will use AAC or apt-X for it
09:19:51[Saint]The full run of units was handed out iiuc.
09:20:01coppere.g. with iDevices and Made for iPhone headphones
09:20:35copperApple recommends bluetooth receiver makers to use AAC
09:21:14copperwhich is probably a lot better than SBC, though I have no idea how it would compare to apt-X
09:22:30copperI'm a bit confused by the "non destructive transcoding" bit with apt-X
09:22:54copperdo they mean that their codec is so good, it's transparent? or are they doing something special with known codecs like MP3 and AAC?
09:23:08[Saint]I think that falls into the category of magical marketing jargon.
09:24:03copperhm never mind
09:24:06[Saint]My limited understanding suggests that transcoding of any lossy source is going to be destructive in some fashion.
09:24:17copperthey call it "the best generic pipe" to transport lossy audio
09:24:25copperyeah
09:24:35copperbut it's not necessarily audible
09:24:42copperit definitely IS with SBC though
09:24:54copperSBC is a piss poor codec
09:25:32copperunless the three devices that I tested in 2009 were somehow faulty
09:25:38[Saint]That whole "non destructive" bit made me lose faith in taking the entire document seriously.
09:25:44copperhehe
09:26:03copper[Saint]: it's just engineers trying to explain their work, with the help of the marketing department!
09:26:57[Saint]"Its better, we promise - srsly guiz"
09:28:33copperdidn't Bluetooth throuhput improve over the years?
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09:28:38copperor just not for A2DP?
09:28:48copperthroughput
09:29:29copperI would have made lossless transcoding a priority from the start
09:29:35kugelapt-X is lossless isnt it?
09:29:53copperone version of it is
09:29:58coppernot for bluetooth though
09:30:05copperbluetooth apt-X is 350 kbps
09:30:12copper362
09:30:15copper352
09:30:29kugelvariable bitrate?
09:30:33copperonly marginally higher than SBC (320)
09:30:37kugelor did you mistype :p
09:30:41[Saint]I believe so.
09:30:49[Saint]Re: variable
09:30:53copperdunno
09:31:04copperthey mention that SBC can be VBR
09:32:05*kugel was making a joke
09:32:33coppermeh, lossless would need about 3 times as much
09:33:21copperI'm sooo going to RMAA that thing
09:33:27kugelbluetooth audio with SBC is a non-starter for me
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09:33:28[Saint]I imagine celt or opus will come in handy for BT in future
09:33:52copperwas gonna say
09:33:57copperneeds moar Opus
09:34:13copperOpus is very late in the game though
09:34:33[Saint]And still not completed.
09:34:39copperit's not?
09:34:48copperwhat's not completed?
09:34:48[Saint]Not that I'm aware.
09:34:59copperversion 1.1 is out
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10:08:08JdGordonkugel: [Saint] whats the story with the 2 raaa fixes from the rockboxcn guy? can they be pushed?
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10:25:43invalidgevaerts: hello again! i investigated the random file corruptions on ipod 5.5g some more. yesterday's build didn't bring any improvement, but apple's firmware did.
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12:35:36wodzpamaury: ping
12:35:45pamaurywodz: pong
12:36:31wodzpamaury: hwstub uses custom control packets, right? How hard would it be to make it running 'in-pair' with rockbox?
12:36:52wodzit should not interfere with ums or am I wrong?
12:37:04pamauryvery easy
12:37:53wodzthat might be interesting option then
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12:39:43pamaurylet me have a look, I can tell you what is needed
12:42:22pamauryfirst you need to be able to report vendor device descriptors (the HWSTUB_DT_* descriptors). One would need to check but I think they can be handled by just adding a new usb driver, in the .get_config_descriptor function
12:43:10pamauryerr sorry, in .control_request
12:44:19pamauryand similarly for read/write/... requests
12:45:07pamauryexcept for some reason I put them as CLASS specific
12:45:26pamauryI probably forgot to move them to VENDOR specific in the last change
13:00
13:00:06wodzhow rb behaves when connecting cable while holding play/select/whatever - does it disable usb altogether or only ums part?
13:00:23pamaurywodz: only ums
13:00:43wodzgood
13:00:51pamaurywodz: also if it makes life easier for integration, I can modify hwstub so that all hwstub stuff is put into an interface, rather than being vendor specific
13:01:22pamaurybecause the current stub uses no interface and assumes it is "alone"
13:02:06wodzI know too little about usb to understand the implications :-)
13:04:19pamauryok, if you want I'll push some code to gerrit to help you tonight, I'll implement only the usb part to get started
13:05:14wodzthanks
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13:50:14pamauryjhMikeS: ping
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14:03:00pamauryjhMikeS: I need some help on digital radio, I would like the radio code to handle the case of digital radio (ie you get pcm data and need to playback to actually get sound). I'm kind of lost in the audio code, also the radio code already seem to be able to record either to file or for peak meter so it's probably not so hard to add playback but I don't know where to start
14:05:37preglowdo we have any targets capable of hardware decoding digital radio?
14:06:01pamauryyes, plenty actually, all which use the stfm1000 tuner
14:06:16pamaurythat's zenxfi2/3, nwze360/370/380
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14:06:35pamauryzenmx (wip)
14:06:44pamauryzenxfistyle
14:07:16preglowhow boring :/
14:07:36pamaurythis horrible chip even does RDS but you have to decode it yourself, you just get the raw demodulated RDS stream, same for audio so you have to do mono/stero and filtering by yourself if you want something correct
14:08:45pamauryanyway, for me the hard part is how to integrate this into our system because I know how to get the data from the chip
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15:35:37seqerHi everyone. Can rockbox be used as media library. Actually I want only this feature: when i 'like' some song, the rockbox will move this audiofile into certain folder, so after it would be easier to copy that folder to my computer.
15:36:36seqerI know this sound very... strange, but .. I really need this feature. I don't like to mark songs with likes or stars or any of this stuff. I just want to create a folder with 'best songs' and that is all
15:38:06ZincAlloyyou can copy and paste them into a folder
15:39:53seqerManually? Just for your information: I'm not a rockbox-user, I'm planning it right now. I want to buy an audio player and install rockbox. By the way Thanks.
15:40:38seqerI was just wondering 'can I setup a custom button with custom action. Like a hotkey'. That would be great
15:43:53ZincAlloyyeah, manually. the file browser has the capabilities for that. while you can assign most options as shortcuts to the quickscreen you can't program more complex actions.
15:44:19ZincAlloyyou can try out rockbox using a simulator build: rasher.dk/rockbox/simulator/">http://rasher.dk/rockbox/simulator/
15:44:29seqerand this is "complex action" right?
15:44:37seqerthanks for the link
15:45:15ZincAlloyyeah. you're trying to to two things at once. and they're not even options. I don't think what you're trying to do is possible
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15:45:59seqerwell, anyhow thanks.
15:46:28ZincAlloywelcome.
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20:17:46copperpamaury: did you ever determine if my microsdxc card was somehow buggy?
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20:19:21pamaurycopper: no, I had a hard time reproducing the bug
20:19:41copperI can't imagine why you had a harder time than me
20:19:45pamaurythe only one time I managed to catch it, I was unable to determine what was the problem
20:19:58copperbut you corrected a bug in your code?
20:20:05pamauryI found one bug in the code
20:20:16pamaurybut I'm not confinced it is the bug you ran into
20:20:22pamaury*convinced
20:20:31coppermeh
20:20:40copperI'll be using my new phone now, unfortunately
20:21:02pamauryactually I found two bugs but the other one was probably not causing any problem
20:21:07copperping me if someone else complains about something similar
20:21:34pamauryI have someone complaining about audio stuttering on zenxfi2, maybe related to automatic folder change
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21:43:45pamaurywho knows about the playback system ?
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21:55:59kugelpamaury: i do a bit
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21:57:42pamaurykugel: I want to make the radio screen able to handle digital radio
21:58:11pamaurythe current code doesn't work because it assumes there is nothing to playback
21:58:37pamauryI'm trying to look at the code but I have no idea how to do that using the current playback code
21:58:59kugelgood luck, it sounds like a lot of work :)
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21:59:28kugelthough I would welcome it, could be used for internet radio on RaaA
21:59:32pamauryI'm sure it's not that difficult, it already does recording so the data is there, it "just" needs to be sent to mixer and playback code
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22:00:09pamaurymaybe I'll try to see how the recording screen handles that when recording from SPDIF, I think it does playback too
22:00:24kugeldo you need the codecs?
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22:33:53kugelpamaury: ^
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22:44:22pamaurykugel: no
22:44:34pamauryI have the raw pcm data
22:45:10kugelpamaury: i see. I would insert into the pcmbuf then
22:45:46kugelor mixer directly
22:46:44kugelyea, the latter, I think pcmbuf is a little highler layer handling track changes (for crossfade and stuff)
22:47:05kugelpamaury: what's the problem with that?
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22:47:39pamauryI don't know how it works, I only know the now the low level pcm code
22:47:46pamaury*know
22:48:24pamauryso how do I get the data and push it to the mixer ? It needs to interplay well with recording, we still want to be able to record the radio
22:49:03kugelpamaury: I suggest looking at how apps/pcmbuf.c calls the pcm_mixer_* functions
22:49:17kugeland mixer_*
22:50:29kugelbasically you just have to call mixer_channel_play_data() with the appropriate callback
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22:51:36pamauryok
22:52:09pamauryand how do I get the data ? Preferably, I would like the low level recording code to handle the details about how to get radio data, and then get the data from the recorder
22:52:42kugelhow do you receive the radio payload?
22:53:15kugelwhy recording...?
22:54:03pamauryit is sent on a dedicated digital interface, but I don't want to code in apps/ to know that, it should just be able to record from radio as usual and get the data
22:54:15pamaury(by recording I mean pcm_rec_*)
22:54:21kugelradio playback doesn't involve recording
22:55:20kugeloh, see what you mean, you want it to act microphone source
22:55:22pamaurybut it can record, and if it does, recording and playback you get the same data obvious
22:55:41kugelor rather spdif
22:56:15pamauryyeah, like spdif
22:56:30kugelI'm not sure that's the best approach
22:56:31pamaurybut since there already is a radio source, we should just use it
22:56:50pamaury*I think there is
22:57:02pamauryor maybe it's just better to create a new one
22:57:24kugelcan you just feed it from the ISR to a bounce buffer and then to the mixer for playback?
22:58:50pamauryyeah, but since mixer is in apps/, so apps/ code must do that
22:59:00kugelmixer is firmware
22:59:08pamauryoh
22:59:31pamaurythen it's easier than I thought
22:59:49kugelit would still make sense to do parts of it in apps because of the radio gui
23:00
23:00:29kugellike volume control and actually connecting the radio source to the mixer
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23:00:59kugelbut this is new stuff, you can go wild :)
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23:01:41kugelcan there be underruns in case of bad signal quality?
23:02:27pamauryno, in theory the radio gives a stable 44.100KHz feed, but there is clock jitter
23:03:19kugeldoes it zero-fill automatically?
23:03:37pamaurynope, it gives you the raw demodulated signal
23:04:15pamauryit's up the the software to do filtering, stereo/mono handling in poor SNR, and even RDS DSP decoding
23:04:42pamauryso in case of bad quality you just get garbage, mostly :)
23:05:07kugelso it's not all that digital :)
23:05:38pamauryit's digital in the sense that the chip only does the ADC part if you prefer
23:06:18pamauryit's so weird
23:06:20kugelI think I would actually do lots of stuff in apps, so that DSP can be applied
23:08:40kugelbut I agree it's ugly to implement the isr in apps
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23:09:48pamaurykugel: that's why I think it's better to present the radio as a recording source, so playing digital radio is like recording + playback
23:10:50pamaurythe other alternative is to make the apps/ unaware that it is a digital radio, bypass all the DSP and go directly from radio isr to playback isr
23:10:55kugelcurrently recording doesn't show the radio screen and doesn't apply dsp
23:11:33pamaurykugel: the radio screen would do the recording and playback
23:12:13pamauryI'm just trying to understand the possibilities and choose the best one
23:14:16kugelas a first step I would implement the isr in radio.c and copy into a ring buffer. then, in the mixer callback I would apply dsr before passing the data
23:14:59kugelhowever I don't know if the mixer callback can run in the DMA irq context in which case an extra thread is probably required
23:15:35pamaurydsp you mean ?
23:16:32kugelyea
23:17:16kugel(if a thread turns out to be needed I'd try to resuse the audio thread (audio_thread.c))
23:18:31kugelbtw, what target is this about?
23:19:51pamauryzenxfi2/3/style, nwze360/370/380, zenmx
23:20:08kugelcan these do 48khz, and if yes, can the digital radio too?
23:20:20kugel(if not you need to resample)
23:21:21pamauryIf I remember correctly, you can ask the radio front end to do 48Khz, I would need to check that
23:21:51pamaury(we don't have the documentation for the chip so it's always a bit shaky)
23:22:18pamauryfor sure the digital link can do 48KHz, but that's not very interesting ^^
23:23:14kugelwhy not?
23:24:45pamaurybecause the radio frontend and the digital link are configured separately, if you set the frontend to 44.1KHz and the link to 48Khz, you will run into a disaster
23:26:22kugelbut not when both can do 48khz
23:27:07kugelhow do you deal with the clock jitter?
23:27:43pamauryin some leaked header, it appears there might be a bit to switch the frontend to 48Khz but I'll need to check that. Why do I need 48KHz and not 44.1KHz ?
23:27:59pamaurybest is probably to insert samples from time to time in the isr
23:28:50 Join Strife89 [0] (~Strife89@adsl-98-80-222-148.mcn.bellsouth.net)
23:30:40kugelpamaury: if you can playback at 48khz the user can set that (yes you could ignore that just for radio playback too but you could also configure the radio do to 48khz to avoid reconfiguring the dac)
23:32:06pamaurylet's stay with 44.1KHz for now ^^
23:32:19pamauryI hope the apps/ code do resampling for me
23:36:33pamaurykugel: in radio.c if I get data from the radio (let's do it with the ISR for now) then I push it to the audio thread with Q_AUDIO_PLAY, does it go through the mixer and DSP ?
23:37:05pamauryor is this only for files and I need to call the mixer directly ?
23:37:07kugelpamaury: better create a new set of Q_AUDIO_*
23:37:15kugelyou don't want to call into playback.c
23:37:24pamauryok
23:38:15pamauryDamn, I feel so lost in the in the apps/ code ^^
23:38:40kugelyou then only need to have a function radio_playback_handler() which handles the event ids and doesn't return until radio is stopped
23:39:43kugelaudio_thread.c is really just a thin wrapper which calls the handler depending on the current audio mode because they are mutually exclusive and waits for the handler to return
23:40:02pamauryWhy doesn't the current radio code works this way ? Just because no one took care to rewrite it ?
23:40:27pamaurybecause the code in radioc.c looks horribly messy
23:40:53kugelbecause the analog audio is hard-wired to the audio outputs
23:41:10kugelthere is no data processing involved

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