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#apertus IRC Channel Logs

2019/02/28

Timezone: UTC


00:38
Y_G
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00:47
Y_G
@anuejn : How should I login ? ,from what I know there should be an automatic prompt to login,but I keep on seeing "cpufreq: __target_index: Failed to change cpu frequency: -16" error
00:47
Y_G
I have to kill the terminal for it to stop
01:21
Y_G
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01:30
Bertl_oO
off to bed now ... have a good one everyone!
01:31
Bertl_oO
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01:43
aombk2
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aombk
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03:47
ap123
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03:55
ap123
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05:24
BAndiT1983|away
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07:21
se6astian|away
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07:37
LordVan
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07:50
danieel
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07:50
rohan_
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07:53
rohan_
hey. if I try building OpenCine on a Mac, would I be needing the same required packages as ubuntu or some different?
07:55
vup2
Y_G: you should be able to type blindly the username and password (they are operator and axiom) to log in
07:56
vup2
then use sudo su to get a root shell
07:56
vup2
then echo userspace > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor should stop the spam
07:56
vup2
we will try to find a better solution, but that should work for now
08:17
BAndiT1983
rohan_: we don't have much experience with OSX, although i have a virtual machine for it and OC worked there before
08:17
BAndiT1983
but this test was done very long time ago
08:18
rohan_
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08:27
Bertl_zZ
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08:27
Bertl
morning folks!
08:29
sebix
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08:34
danieel
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08:49
BAndiT1983
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10:01
rohan_
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10:03
rohan_
BAndiT1983: Np. I'll give it a go
10:07
rohan_
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10:36
BAndiT1983|away
changed nick to: BAndiT1983
11:29
LordVan
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12:12
Dev_
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12:14
pavan
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12:16
Dev_
Hello BAndiT1983 : , I have some doubts regarding FUSE implementation in prototype (OC_frameserver)
12:16
BAndiT1983
hi Dev_
12:16
BAndiT1983
why?
12:17
Dev_
1. The functions implemented inside fusehandler.cpp , which replicates the unix system calls like (getattr, read, readdir) , The Function contains a Argument names as path ,
12:18
Dev_
Is it mount point which we supply while running it using (./OC_frameserver -d -s -f mountpoint)
12:18
Dev_
?
12:19
BAndiT1983
usually yes
12:19
BAndiT1983
this is some basic FUSE structure implementation
12:20
BAndiT1983
the path can be everything underneath the mount point, so the application can create sub-folders dynamicaööy
12:20
BAndiT1983
*dynamically
12:22
pavan
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12:22
Dev_
so why we are doing strcmp with "/" and "filename = /test.avi" , they will be never become equal to path
12:23
BAndiT1983
where?
12:23
Dev_
in getattr function call (for reading meta data of file)
12:24
BAndiT1983
have you actually tested the application? it worked for me when i've implemented it
12:24
Dev_
yes , i could able to run it on my system as well , i followed this (https://engineering.facile.it/blog/eng/write-filesystem-fuse/)
12:25
BAndiT1983
and what's the problem?
12:26
Dev_
i wanted to understand the code , like how it is implemented
12:26
Dev_
i could able to understand what these function are actually doing
12:26
BAndiT1983
it's implemented according to FUSE structure, checks are done for single file, as we don't have sub-folders
12:27
BAndiT1983
if the user looks at the properties of the main folder (=mount point) thne the function will call / branch
12:27
BAndiT1983
if the user wants to look at the file properties, then the "path" branch
12:27
BAndiT1983
don't see any problems there
12:27
BAndiT1983
if you don't believe me, then please debug through it and tell me where the errors are
12:28
BAndiT1983
note: https://www.cs.nmsu.edu/~pfeiffer/fuse-tutorial/html/callbacks.html
12:28
BAndiT1983
paths are relative
12:34
Dev_
can u elaborate "paths are relative"
12:35
Dev_
please
12:35
BAndiT1983
what should i elaborate there? it's what it is, paths are relative
12:36
BAndiT1983
you have a mount point, so all the paths are relative to it, in my app the file resides under mount point folder, so the path is /test.avi
12:37
Dev_
okay so u mean our mount point is like a root , am i correct ?
12:38
Dev_
test.avi is a file which resides in it
12:38
Dev_
yes ?
12:39
BAndiT1983
ehm, haven't you said you've tested the app?
12:39
Dev_
yes
12:40
BAndiT1983
it's not that difficult to debug it and see what the paths contains at different actions from user, at least that's how i'Ve done it while implementing
12:40
BAndiT1983
*paths contain
12:42
Dev_
okay , let me also debug it ,
12:42
Dev_
thanks
12:42
Dev_
:)
12:42
BAndiT1983
Dev_: have you finished the challenge task already?
12:43
Dev_
yes BAndiT1983
12:43
BAndiT1983
ok
12:44
Dev_
would u like to take a look
12:44
Dev_
if u have time in hand
12:44
Dev_
?
12:44
BAndiT1983
you can post the link here, we will check it for sure, as it's mandatory for selecting students
12:45
Dev_
okay , wait
12:47
BAndiT1983
tested frame server, still works like intended
12:47
BAndiT1983
test2.avi is written for comparison and test.avi is the actual "virtual" file
13:03
Dev_
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13:06
Bertl
off for now ... bbl
13:06
Bertl
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13:10
Dev_
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13:10
Dev_
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13:29
Dev_
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13:29
Dev_
Here it is BAndiT1983 : https://github.com/kakashi-Of-Saringan/challenge , please check
13:32
BAndiT1983
thanks, will check it later when i have some time
13:32
Dev_
"test2.avi is written for comparison and test.avi is the actual "virtual" file" : okay
13:32
BAndiT1983
but why are empty lines in front of functions?
13:33
BAndiT1983
variables should be lower-case
13:33
sebix
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13:33
BAndiT1983
byte swapping is not there, also the splitting is same as others have with wrong presumption, which only works for this case and 8 bits, but not for general usage
13:35
Dev_
"but why are empty lined in front of function ?" , in main.cpp , extract_channels , etc
13:35
Dev_
?
13:35
BAndiT1983
everywhere
13:36
BAndiT1983
will check more later
13:36
Dev_
okay
13:40
BAndiT1983
Dev_: also please check avi generation as it looks rather monolithic, if i remember correctly, then it's how Supragya has implemented it
13:41
Dev_
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13:42
BAndiT1983
FindSize inits map every time it's called, which is not very nice
13:44
Aayush
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13:59
Aayush
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14:29
parimal
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14:30
Dev_
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14:32
Dev_
"variable should be lowercase " : function names are in camelcase , okay i will change the variables
14:33
Dev_
"byte swapping is not there, also the splitting is same as others have with wrong presumption, which only works for this case and 8 bits, but not for general usage " :
14:34
Dev_
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14:34
Dev_
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14:34
Dev_
i will check logs for that , i remember people talking about that
14:36
Dev_
"avi gerneration " : this way it is easy to implement
14:37
Dev_
what changes can i do ? in this
14:37
Dev_
yeah , i understand the map thing , i will change that , thanks
14:37
parimal
hey Dev_, I tried your program. The PPM images for red, green and blue channels were greyscale.
14:37
parimal
Shouldn't they have the color of their respective channels?
14:38
BAndiT1983
variables start with lower-casae, methods/functions with upper-case
14:39
BAndiT1983
Dev_: OC frame server prototype bypasses the problem of calculating manually
14:39
Dev_
hey parimal : it was mentioned that "save the channels as valid images "
14:40
BAndiT1983
what's wrong with grayscale? it's the base of raw data first
14:40
ayushprd
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14:40
Dev_
i don't know parimal , that it should have color of respective channel
14:40
parimal
No I was confused, I thought it should have color too.
14:41
Dev_
i remember somelse had the same doubt , that grayscale is correct or not
14:41
BAndiT1983
there are 4 image files, 3 for channels and interpolated one, if i'm not mistaken
14:41
Dev_
few days back
14:41
Dev_
four images (R, g1, g2, b)
14:41
BAndiT1983
?
14:41
Dev_
one for final interpolated
14:41
Dev_
one avi file
14:41
BAndiT1983
why should you split G1 and G2?
14:42
BAndiT1983
ah, i see, Supragya wrote it down, but it's a bit over the top, as G1 and G2 should be one channel
14:42
BAndiT1983
it was bitmap or avi
14:42
Dev_
should i change it BAndiT1983
14:43
BAndiT1983
no need to, i'm more interested in proper code
14:43
Dev_
okay
14:43
BAndiT1983
goal of the cahllenge is not the result, but to show how the challenge can be accomplished with readable code and smart implementations of algorithms and processes
14:44
Dev_
okay
14:44
BAndiT1983
results should only give me a hint, that the code actually works
14:44
Dev_
any changes for indentation , BAndiT1983
14:45
Dev_
?
14:45
BAndiT1983
try to align everything nicely
14:46
Y_G
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14:46
Dev_
it would be so nice if u can give me example , then i will change it
14:46
Dev_
from the code
14:47
Dev_
please
14:47
Dev_
accodingly
14:47
BAndiT1983
there are many formatters out there, also i don't have time at the moment, as i have to prepare some other things, which are not related to apertus, but very important for my regular job
14:48
Y_G
@vup2 That worked ,Thanks :)
14:48
Dev_
okay np , i used visual basics c++ formatter
14:48
BAndiT1983
try to make the code nice and readable, formatting should be done properly, but you should concentrate on functionality
14:48
BAndiT1983
visual basic c++?
14:49
Dev_
vscode , there is c++ code formatter
14:49
Dev_
i forget its name
14:50
Dev_
okay i will see the alignment ,
14:50
BAndiT1983
you should try to adjust its settings, as from the looks at github there are too many spaces in front of lines, make it 2 or 4 and check what looks better
14:52
Dev__
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14:53
Dev__
"it should be 2 or 4" okay i will se , thanks
14:53
BAndiT1983
coding guidelines say 2, but sometimes it's too narrow, but this depends on the font usually
14:55
Dev_
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14:55
BAndiT1983
what i don't like about AVI generation is the monolithic and rigid structure
14:55
Dev__
Okay
14:55
se6astian
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14:55
BAndiT1983
please check OC frame server prototype, it creates a tree of nodes to generate the file, which also avoids the need for calculating sizes manually, you only set the size of the node which is processed recursively
14:58
Dev__
I will try to make changes ,
14:59
Dev__
Update u soon
15:00
Dev__
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Dev_
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parimal
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Dev_
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AliAmaim__
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AliAmaim__
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Y_G
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15:39
se6astian|away
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niemand
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16:12
BAndiT1983
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16:21
ayushprd
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18:00
intrac
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18:07
intrac
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18:35
anuejn
fares is doin really nice stuff :)
18:36
anuejn
a migen implementation of lossless jpeg is really cool
18:36
se6astian
indeed!
19:42
RexOrCine|away
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niemand
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20:17
BAndiT1983|away
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AliAmaim__
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se6astian
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BAndiT1983
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