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#apertus IRC Channel Logs

2019/05/12

Timezone: UTC


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Bertl_zZ
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BAndiT1983|away
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08:19
apurvanandan[m]
Bertl, can't we design the ones with ft602 later ie when we will be clearer with things. We can have two modules right now one with 1200 and one with 2000 both featuring a ft601q (like if 1200 doesn't work with ft601 then it most probably won't with ft602 also). Though in any case having both combination i.e. all four boards available is the best option for devel purposes.
08:19
apurvanandan[m]
Sorry for delay
08:21
apurvanandan[m]
If you have to design both right now then please design both combinations.
08:21
Bertl_oO
there is one important question which wasn't asked yet :)
08:22
Bertl_oO
any idea which one?
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se6astian|away
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Nira|away
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apurvanandan[m]
Some hint please :)
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BAndiT1983
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12:41
anuejn
se6astian: once you said, that you have some contact to onsemi guys
12:42
anuejn
could you ask them for a pinout of the ar1335?
12:43
anuejn
we have everything else (including datasheet, register reference and bare die pinout) but the pinout of the bga package is missing :(
12:43
anuejn
(we are considering this sensor for the micro r3)
12:49
se6astian
will do
12:55
se6astian
there are the AR1335, AR1335HS and AR1335CSP
12:55
se6astian
I so far found no reference to a BGA version
12:56
se6astian
is it a specific submodel number?
12:57
vup2
https://www.onsemi.com/PowerSolutions/product.do?id=AR1335
12:57
vup2
see the bottom table
12:58
se6astian
ah package type ODCSP-63
12:58
se6astian
thanks
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Dev_
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se6astian
found it
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se6astian
emailed it to you
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anuejn
thanks :)
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vup2
great
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Dev_
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13:13
Dev_
Hey BAndiT1983 : okay I will look at ffmpeg for handling Events for playbacksider
13:14
Dev_
But I think before that we should look for handling multiple frames of RAW input and use of static alloator. It will provide us basic functionalites which we are trying to control through playbackslider
13:15
BAndiT1983
Dev_, are you sure you know what to do?
13:15
BAndiT1983
you mention s lot of things, which have not much to do with the task in first place
13:15
Dev_
for handling mulitple frames ??
13:16
BAndiT1983
please describe your steps, so i can understand if they target the right direction
13:17
Dev_
I suppose , first step would be to handling multiple frames using static allocators ,
13:18
Dev_
I need deeper insight for that
13:19
BAndiT1983
you have to apply "divide and conquer", as you need a proper plan and smaller steps on how to approach different tasks
13:19
BAndiT1983
focus on one task and try to dissect it in smaller sub-tasks
13:20
BAndiT1983
you don't need static allocator first, try to implement basic playback
13:20
BAndiT1983
you can go with brute force method and use new and delete or smart pointers, next step could be static allocator, as it's performance optimization and shouldn't be approached as first
13:20
BAndiT1983
"no pre-mature optimization!!!"
13:21
BAndiT1983
http://wiki.c2.com/?PrematureOptimization
13:21
BAndiT1983
https://stackify.com/premature-optimization-evil/
13:21
BAndiT1983
learn how to use the playback slider, by connecting to events, if you need help there, then i can explain basics of event system to you
13:22
BAndiT1983
also it's important to know about MVP (model-view-presenter) pattern, to understand how to separate data and views
13:22
BAndiT1983
https://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93presenter
13:25
Dev_
okay, makes sense. At present playback sliders only add UI part to OC and we need to extend events like prevFrame , next frames present there
13:25
Dev_
Yes?
13:26
Dev_
https://github.com/apertus-open-source-cinema/opencine/blob/dev/Source/OCui/Controls/PlaybackSlider.h
13:26
Dev_
nextFrame*
13:27
BAndiT1983
yes
13:27
BAndiT1983
the code will get a clean up, but you can start to add events, e.g. play button
13:28
BAndiT1983
you can see some events in SetupEvents(), which connect to some signals, but we need dedicated ones to be able to hook onto them
13:29
BAndiT1983
try to add an event to play button to notify when it was toggled, e.g. for playing and pausing the video
13:29
BAndiT1983
some basic functionality is there and should be extended
13:30
BAndiT1983
you can orientate on the commented out code for the player, but this was first test and contains a lot of tight coupling, which we should try to avoid
13:30
BAndiT1983
https://en.wikipedia.org/wiki/Loose_coupling
13:30
BAndiT1983
https://stackoverflow.com/questions/226977/what-is-loose-coupling-please-provide-examples
13:34
Dev_
Okay, i have to think about how each event can be extended like UpdateSlider, PrevFrame, NextFrame etc
13:34
Dev_
Till now , i was just able to understand signal and slots concept of
13:34
Dev_
Qt
13:34
Dev_
I will look more
13:35
BAndiT1983
please do, as it's necessary to know this things, otherwise you will have a hard time to complete the gsoc goals
13:35
Dev_
yes , I understand
13:35
BAndiT1983
try to write down a concept, e.g. which events are required
13:36
BAndiT1983
i mean for playback slider, afterwards it would be easier to start some basic implementation, without real playback first, and to check if it works correctly
13:36
BAndiT1983
can help you with unit testing later on, as adding TDD at this stage is not helpful
13:37
Dev_
TDD?
13:39
BAndiT1983
test driven development
13:40
Dev_
Okay , I will see specifics of each event
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BAndiT1983
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se6astian
off to bed
21:46
se6astian
good night
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se6astian
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21:54
Bertl_oO
off to bed now ... have a good one everyone!
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BAndiT1983
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