USB-OTB Host UVC Webcam - Galaxy S 4 Developer Discussion [Developers-Only]

Hi,
I am trying to figure out which UVC camera's are supported by the Samsung Galaxy S4 Kernel. It does not seem to be published anywhere. I have tested various camera's and some are detected, but I get no video from the Camera app on the phone. Perhaps there is an expert here who has some knowledge of this topic? I noticed that there were some threads related to a CM version that has included support for OTG Webcams, but I could not find more details about this.
This is for a research project that I am working on.
Thanks for any help.
-Blue

I can't find a listing of which UVC Camera's Samsung supports for OTG Host... anyway, if anyone else knows something about this please let me know.

What exactly are you trying to achieve? I have tried to get V4L2 working but I failed, it seems to be very hard. I want to use the S4 camera as a webcam thats my purpose. what's yours maybe I can help you, you want to use a OTG usb webcam and pipe it's video stream to the camera? or what

Related

[Q] Question about the camera

this may need to be in development. I want to know how or why when hooked up via the tv out function and launch the camera I get a not supported feature?? is there another app that will allow that or a developer that can solve my issue. I want to set the phone down and see what the camera sees on my tv.. any solutions would be great.

[Q] External webcam on Motorola Astrix

Hi there,
Has anyone figured out how to get an external USB webcam to work with the Motorola Atrix. Keyboard and mouse are possible via webtop and powered USB hub hack. How about webcam though. Assuming Atrix can go to USB host mode, external webcam should be possible. But has anyone tried?
Thanks!
sporacle said:
Hi there,
Has anyone figured out how to get an external USB webcam to work with the Motorola Atrix. Keyboard and mouse are possible via webtop and powered USB hub hack. How about webcam though. Assuming Atrix can go to USB host mode, external webcam should be possible. But has anyone tried?
Thanks!
Click to expand...
Click to collapse
As an added link, looks like webcam support for the nook has already occured, but wondering what the similarities may be.
http://forum.xda-developers.com/showthread.php?t=1105497
From my understanding, we should just need the drivers. I have a cam at home I test, but I'm a complete noob with Linux, so I probably won't have any luck with installing drivers. (Though I'll certainly be looking through some of the webtop threads to see if I can figure it out. I'm sure we can find the drivers online...it's just a matter of getting them installed.)
SoberGuy said:
From my understanding, we should just need the drivers. I have a cam at home I test, but I'm a complete noob with Linux, so I probably won't have any luck with installing drivers. (Though I'll certainly be looking through some of the webtop threads to see if I can figure it out. I'm sure we can find the drivers online...it's just a matter of getting them installed.)
Click to expand...
Click to collapse
As demonstrated by the Nook hack, Linux would support UVC compliant webcams. I beleive those drivers are running the builtin cameras as well.

[Q] MHL limitation with camera apps

Hi all,
I just recently found out that S2 can not stream anything via MHL to the external monitor when camera app is running (in focus).
It will just display: "HDMI not available when application is running" which really sucks. I expected a lot of flexibility from Android, since this feature has been in Apple phone product for quite some time.
Anyone know why exactly this happened? I tried to look around mhl consortium and can't find relevant technical information.
I'm guessing the problem lies on the android OS itself and not the hardware. But still, it would be nice if someone can share a workaround or latest news or whatever discussion on this.
Thanks,
vinis.
Post your ROM details (Settings > About phone)
Hi, i am using Neat Rom lite as in here latest build 7thOct
I know that only samsung based ROM have MHL / tv-out capability, mainly due to proprietary driver.

[Q] Request for kernel/ROM modding ZOPO ZP900

Please refer to the original thread for ZOPO ZP900 / Hero H9500 which are basically one and the same phone models with different brand tags.
http://forum.xda-developers.com/showthread.php?t=1865397
So been using this nice phone for quite some time I still have some queries unanswered or unexplored maybe .
1. Does this phone support hardware video decoding , have tried running MX Player and apparently it does not work, even though i thought that the GPU in this phone is quite decent. Maybe this opiton need to be enabled at the kernel level. Another user in the forum also had the same question without any success in using any of the media players. This also limits the possibility of running the recently released XBMC Beta 1 as a complete media center application on this phone, given that it already has a sizable 5.3 inch screen enough for a single person viewing.
2. Does this phone support USB OTG, i tried it today with a standard USB OTG cable and tried connecting the USB Flash disk and a USB 3G Modem apparently both of them are not detected. I have also tried them connected via a powered USB hub in case the phone's micro usb connector cannot supply enough power. So far nothing comes up. I have installed the PPP Widget from the Google Play Market, but as I read it needs a couple of libraries and drivers built into the custom ROM (ppp serial driver and libraries) and the USB OTG option also needs to be enabled at the kernel level.
3. There is not much following of this phone on a mass level, so that we could expect any feature packed kernel like Siyah/Dorimanx and ROM from the branches of AOKP/AOSP/Cyanogen.
Given the current situation can I request on behalf of all the users of this phone (and its branded brother ZOPO ZP900) to the developer's community to please look into the possibility of modding the kernel to at least enable the video hardware decoding and USB OTG functionality. It would be a complete blast, given the ROM has already been rooted.
Please ask and guide me if I can be of any help to post the dumped kernel image or anything else.
Thanks.
Zopo zp900 drx rom
HyperEscape said:
Please refer to the original thread for ZOPO ZP900 / Hero H9500 which are basically one and the same phone models with different brand tags.
http://forum.xda-developers.com/showthread.php?t=1865397
So been using this nice phone for quite some time I still have some queries unanswered or unexplored maybe .
1. Does this phone support hardware video decoding , have tried running MX Player and apparently it does not work, even though i thought that the GPU in this phone is quite decent. Maybe this opiton need to be enabled at the kernel level. Another user in the forum also had the same question without any success in using any of the media players. This also limits the possibility of running the recently released XBMC Beta 1 as a complete media center application on this phone, given that it already has a sizable 5.3 inch screen enough for a single person viewing.
2. Does this phone support USB OTG, i tried it today with a standard USB OTG cable and tried connecting the USB Flash disk and a USB 3G Modem apparently both of them are not detected. I have also tried them connected via a powered USB hub in case the phone's micro usb connector cannot supply enough power. So far nothing comes up. I have installed the PPP Widget from the Google Play Market, but as I read it needs a couple of libraries and drivers built into the custom ROM (ppp serial driver and libraries) and the USB OTG option also needs to be enabled at the kernel level.
3. There is not much following of this phone on a mass level, so that we could expect any feature packed kernel like Siyah/Dorimanx and ROM from the branches of AOKP/AOSP/Cyanogen.
Given the current situation can I request on behalf of all the users of this phone (and its branded brother ZOPO ZP900) to the developer's community to please look into the possibility of modding the kernel to at least enable the video hardware decoding and USB OTG functionality. It would be a complete blast, given the ROM has already been rooted.
Please ask and guide me if I can be of any help to post the dumped kernel image or anything else.
Thanks.
Click to expand...
Click to collapse
Suggest you try here: http://www.movilesdualsim.com/foro/...7-4-ICS-4-0-4-ZP900-y-clonicos-de-1GB-y-512MB
The forum is in Spanish, but I have flashed the ROM and it is very good. Google translate makes most of the stuff on the forum understandable. If you post in English the forum doesn't mind too much. As long as you have managed to flash CWM onto your Zopo/Hero you will have no problems with this ROM.
Remember that many video and audio file types - especially wma and wmv are NOT supported by Android unless the ROM is cooked with these features in the recipe. For playing wma, I am using Poweramp that has wma support built in.
The ROM is based on ICS, so it supports flash video, if nothing else. AVI also works. Not sure if there is a video player to play wmv.
Hope this helps.
Enjoy the phone - I think for the money it can't be beaten.

How to cast video camera of Galaxy S2 to LCD monitor?

I have a Samsung S2 phone which is now permanently mounted on the microscope to take pictures of specimens. As the phone is quite old, I have used cynogenmod (11.0) with android 4.4.4 on it replacing the touchwiz software.
I have tried Google Chromecast first-generation - doesn't work. The phone seems to be trying to connect as the chromecast is going to switch on, but in the middle of connection, the casting stops. It works with other phones, just not the S2. I have bought and tried a micro USB to Hdmi port. Does not work. Any ideas how to cast it to a monitor? Maybe I need to install another rom?
mystvearn said:
I have a Samsung S2 phone which is now permanently mounted on the microscope to take pictures of specimens. As the phone is quite old, I have used cynogenmod (11.0) with android 4.4.4 on it replacing the touchwiz software.
I have tried Google Chromecast first-generation - doesn't work. The phone seems to be trying to connect as the chromecast is going to switch on, but in the middle of connection, the casting stops. It works with other phones, just not the S2. I have bought and tried a micro USB to Hdmi port. Does not work. Any ideas how to cast it to a monitor? Maybe I need to install another rom?
Click to expand...
Click to collapse
There are many alternative like Vysor or mirror, try reading this article, it may help you:
https://www.techjunkie.com/mirror-android-pc/amp/
MigoMujahid said:
There are many alternative like Vysor or mirror, try reading this article, it may help you:
https://www.techjunkie.com/mirror-android-pc/amp/
Click to expand...
Click to collapse
Thanks for the article. Never knew those existed.
You can try to use MHL , but It doesn't work on AOSP and CyanogenMod. You need stock ROM or Stock based ROM to make it work
Thanks. I finally got it to work with the Techjunkie article. However, only one method worked which is the Airdroid. The rest:
1. Vysor
2. Mirror
3. Chromecast and Google Cast
does not work. I think it may be due to the old cynogen onboard.

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