Develop Bugs

[Q] Camera in open source roms

The camera is better in the Sony stock ROM compared with for example CM. I have understood that this is due to the driver being closed source, owned by Sony.
How possible is it that the open source camera will be as good as the proprietary one?
Has Sony ever before released the sources for their other camera drivers, or have they released the driver as a binary blob usable in other ROMs?
I am asking just out of curiosity.

CM-11 Snapshot M13

If, like me, you despaired of CM ever releasing another "stable" version of CM-11, your wait is over.
I found out they had FINALLY done another M-SNAPSHOT code freeze, so I synced the source and built one of my own.
http://d-h.st/aihU
Link to Kernel source (if you feel you need it)
https://github.com/CyanogenMod/android_kernel_samsung_hlte
-blaine

Frankenbiker said:
If, like me, you despaired of CM ever releasing another "stable" version of CM-11, your wait is over.
I found out they had FINALLY done another M-SNAPSHOT code freeze, so I synced the source and built one of my own.
Link removed. Apparently we can't post links to builds any more without a full kernel code dump in the post.
If anyone is actually interested, PM me and I'll send you the link.
-blaine
Click to expand...
Click to collapse
This has been the case for as long as XDA has been GPL compliant. Any distribution of a binary (meaning kernel boot,img) that is not unmodified manufacturer's stock requires a link to kernel source, not a code dump. Anyone building CM from source should have no issues getting the link to source code and including it.

Frankenbiker said:
If, like me, you despaired of CM ever releasing another "stable" version of CM-11, your wait is over.
I found out they had FINALLY done another M-SNAPSHOT code freeze, so I synced the source and built one of my own.
http://d-h.st/aihU
Link to Kernel source (if you feel you need it)
https://github.com/CyanogenMod/android_device_samsung_msm8974-common
-blaine
Click to expand...
Click to collapse
There is no kernel source in that link. Please post proper kernel source.
Edit: Thank you for updating the link to kernel source

AOSP ROM?

What would it take to see a base AOSP ROM put together for the LG G4? I know there's some folks working hard at bringing CM to the G4, but what about an AOSP unmodified ROM with drivers, of course? I've always wondered if that is a better option than say a ROM like CM which has loads of known bugs and issues.
Maybe an AOSP super-stock setup which we could modify after via Xposed / Mods to add in what we want would be a better option?

CJ-Wylde said:
What would it take to see a base AOSP ROM put together for the LG G4? I know there's some folks working hard at bringing CM to the G4, but what about an AOSP unmodified ROM with drivers, of course? I've always wondered if that is a better option than say a ROM like CM which has loads of known bugs and issues.
Maybe an AOSP super-stock setup which we could modify after via Xposed / Mods to add in what we want would be a better option?
Click to expand...
Click to collapse
After we finish the device tree and everything is working, it can be then used to build whatever Rom you desire

You rock, thank you for the quick response! I'm not even sure what kind of rom I desire. I just know it would be neat to go full on basic AOSP and add from there without some of the clutter and bugs introduced with CM's stuff, although CM has always been an enjoyable experience. Whoot for guys like you!

I know this is old thread... but what source tree are we talking about here? Obviously not AOSP itself, i think... right?
CM source?
Maybe i'm missing something about branches of AOSP... and other trees..
many thanks
mythos234 said:
After we finish the device tree and everything is working, it can be then used to build whatever Rom you desire
Click to expand...
Click to collapse

thenextdon13 said:
I know this is old thread... but what source tree are we talking about here? Obviously not AOSP itself, i think... right?
CM source?
Maybe i'm missing something about branches of AOSP... and other trees..
many thanks
Click to expand...
Click to collapse
They talked about device tree here. An example for a pure AOSP one for the device LG H815 is here:
https://github.com/cile381/android_device_h815
See this for an explanation :
http://wp.me/p6ZeCY-3p
AOSP source contains the sources to build a ROM which are the same for all devices and a device tree is a device specific description on how to build or as the above link states:
“A device tree is a tree data structure with nodes that describe the physical devices in a system”
.
Sent from my LG-H815 using XDA Labs

Thank you, steadfasterX.
That provides some clarity, although I think there is still a bit missing for me--
Ugh, i can't post links because of spam rules.. :-/ makes describing things harder.
How did you find the github cile381/android_device_h815 as being the AOSP tree for that phone? My understanding was that the AOSP main repo is here:
android.googlesource.com
And so related to my question previously.. i guess i'm confused specifically who the 'we' is that mythos234 references, and where that source would be located...
many thanks!

How to build AOSP from Google for the OnePlus 3/3T?

I'm trying to build Stock AOSP (Not LineageOS) straight from Google for the OnePlus 3/3T?
I searched for a guide, but haven't found one.
Thanks in advance!

You can't
AOSP source is available for Pixel and Nexus devices
But you can build CAF for OnePlus 3, is clean and close to AOSP
Sent from my ONEPLUS A3003 using Tapatalk

Since you're doing it on your own I suggest using a rom here as a base GZR recently posted GZOSP a Oreo base for Developers to use as a base for their roms you should check it out it's a great start if you're new to development

liam_davenport said:
Since you're doing it on your own I suggest using a rom here as a base GZR recently posted GZOSP a Oreo base for Developers to use as a base for their roms you should check it out it's a great start if you're new to development
Click to expand...
Click to collapse
That would be doing him a great dis-service. Buy using anothers base you dont learn everything you need and rely on others code way too much. Not to mention if a cm/los issue happens (underlying bug in their base code so you are waiting for them to fix it) This is the reason that whole project will not work.
Starting from scratch is a great start and a place everyone should start

... If he's never built a rom before then starting from scratch is most definitely *not* the place to start. GZOSP would likely be the best place to start as at least you can sync all and it actually builds. Would learn a ton just by figuring out how to remove all the GroundZero naming to make it your "own" rom.
There aren't any default AOSP device tree's available for OP3(you'd *have* to use someone else's code and it would likely require manually fixing it to build) so can't start there really, and good luck trying to find which branch(s) of caf and which repo's you need to build.. Writing device trees from scratch by yourself for aosp is drunkeness unless you've done it before and *know* what you're doing.
--
TLDR: There's no guide because it's not a thing currently. Would start with GZOSP if I were you.

HolyAngel said:
... If he's never built a rom before then starting from scratch is most definitely *not* the place to start. GZOSP would likely be the best place to start as at least you can sync all and it actually builds. Would learn a ton just by figuring out how to remove all the GroundZero naming to make it your "own" rom.
There aren't any default AOSP device tree's available for OP3(you'd *have* to use someone else's code and it would likely require manually fixing it to build) so can't start there really, and good luck trying to find which branch(s) of caf and which repo's you need to build.. Writing device trees from scratch by yourself for aosp is drunkeness unless you've done it before and *know* what you're doing.
--
TLDR: There's no guide because it's not a thing currently. Would start with GZOSP if I were you.
Click to expand...
Click to collapse
I mean in Biology, you don't start at the organism, you start at the atom. You start at the base and build from there.

Question How To Get started with Custom Rom Development/Contribution as a Junior Java/Kotlin developer?

As the thread question states I am a junior Java/Kotlin developer and would like to contribute to custom rom projects.
I have been mainly using Lineage OS on my old devices for a past few years and I am genuinely thankful for this community and would like to give back.
I have no idea where to get started and the only threads I found were really old from 2013 and hence I am posting it here. I have only gone as far as compiling AOSP from source and managing to flash it to my device. ( Any guidance is welcome ).
I have 2 additional queries :-
1) Why most custom rom releases are based on AOSP or Lineage as source rather than working backwards from the manufacture's provided rom? In that way the device can retain most of this functionality.
2) I have observed QUALCOMM powered devices are much more appreciated in this community compared to MediaTek, Why is that so? Recent MediaTek Chips have been quite powerful yet support from the community isn't there yet ..... what are MediaTek chipsets lacking ?

Mediatek doesn't release their source code so it's very difficult to develop custom ROMs.
Correct me if I'm wrong

How does your self-built AOSP perform? Everything working correctly?
I think the first question is, because the manufacturer's ROMs are proprietary and closed source, so it's not impossible, but difficult I think. Dunno how Xiaomi.eu does it.
Second question is, because Qualcomm releases source code to CAF - Code Aurora Forum. Custom ROM/Kernel Makers pull a few bits & pieces from CAF into their AOSP ROM, for that added spice.
I think MediaTek does too, but only for few devices?