I pushed my msm_video.ko file to android system. Then I reboot my phone, and I find that my /sys/module/msm_video fold missing. Do you know why?
I tried to use my msm_video.ko to dynamically replace msm_video.ko file.
I hope my android can run correctly and I can collect my logs.
Because Android missing /sys/module/msm_video this file, I can't collect the logs that I want.
Related
I have made an electron-app using react. The app uses the command line-utility Sound eXchange (Sox) to manipulate audio. It works in my local environment, but every time i try to run the application on another device, i get the error: "sox could not be found". Naturally this error derives from the fact, that Sox isn't installed on this device.
Have anyone got a clue on how I can make sure that Sox is passed along with my application? I have tried downloading Sox and putting it inside my application, but I think I have to setup some kind of "environment path" then? Presumably, in my package.json file or perhaps in the node-module itself (which is Sox-audio).
If anyone knows how to crack this mystery, please do not hesitate to respond - It is much appreciated! Thanks in advance!
I am building a kiosk application using webkitgtk on the raspberry pi 4.
This application will not be connected to the internet and all the html,css, javascript for the UI are all located on the local filesystem.
I am using buildroot to setup the Linux system, starting with the pi 4 defconfig provided in buildroot.
I have enabled all the packages needed to get webkitgtk running.
Also, the kiosk application has been tested on my desktop, using the same software stack and it works
However, when i try to launch the application on the raspberry pi, a blank page pops up. I have played around with the WebKitWebSettings object associated with my WebKitWebView by enabling local file access. It still shows up a blank screen.
Also included in my pi4 application bundle is a simple gtk3+ application. This launches successfully!
I will really appreciate some pointers as to why this is happening as i have sort of reached a dead end
UPDATE
I enabled the MiniBrowser app that comes with the Webkitgtk package.
Entering the local url, The page does not load. It only gives me a message at the top saying "Successfully downloaded".
It seems to be treating my input as a download
UPDATE 2
After some more experimenting, i was finally able to get webkitgtk working on the pi 4.
The problem seems to originate from using the webkit_web_view_load_uri() api.
It does not seem to recognize my html document as a web page.
I got around it using the webkit_web_view_load_html() call. This included some hacks by first reading in the contents of the html doc into a character buffer, and passing it to webkit_web_view_load_html().
You also have to provide a base path to this function call to be able to resolve all the urls (scripts, css, images etc) in your html document.
Another problem i haven't been able to work around is, SVG images are not loading in webkitgtk. I have used jpg formats and they work. I suspect this my be due to a configuration switch in building webkigtk
It's hard for me to figure out what might be happening without having access to your environment and settings. My gut feeling is that pages are showing blank because perhaps some shared libraries are missing. You can check that with:
$ ldd WebKitBuild/GTK/Release/bin/MiniBrowser
I am using buildroot to setup the Linux system, starting with the pi 4 defconfig provided in buildroot.
There's a buildroot repository for building WPE for RPi. WPE (WebPlatform for Embeded) is like WebKitGTK but doesn't depend on GTK toolkit. Another important difference is that WPE runs natively on Wayland.
If you're interested in having a webapp embedded in a browser running in a device with limited capabilities, WPE is a better choice than WebKitGTK. The buildroot repo for building WPE for RPi is here:
https://github.com/WebPlatformForEmbedded/buildroot
There's is also this very interesting step-by-step guide on how to build WPE for RPi3:
https://samdecrock.medium.com/building-wpe-webkit-for-raspberry-pi-3-cdbd7b5cb362
I'm not sure whether the buildroot recipe would work for RPi4. It seems to work for all previous versions, so you might be stepping in new land if you try to build WPE on RPi4.
If you have an RPi3 available I'd try to build WPE for RPi3 first, and make sure that works. Then try for RPi4.
I've googleing for a while to fix the following problem, but without success. I'm trying to learn to use the app Kinemaster, in my computer (Windows 10) running under the BlueStack emulator.
Apparently, the video I created was successfully exported, but I cannot find it on the computer.
My question is: where is it stored/exported to?
Open your Bluestacks,,,In Home,Library; Click the System apps go to Media Manager, U can find all your exported videos there, and also u can also transfer it to window by clicking the EXPORT TO WINDOWS and Done..
We are having trouble deploying our Google Appengine application. We get the following error message
from the indicated deployment command at the Unix shell prompt.
/home/leffstudent/appengine/bin/appcfg.sh update ~/u3/web/war -p proxy.wiu.edu:8080
The following URL can be used to authenticate:
https://accounts.google.com/o/oauth2/auth?access_type=offline&approval_prompt=force&client_id=550516889912.apps.googleusercontent.com&redirect_uri=urn:ietf:wg:oauth:2.0:oob&response_type=code&scope=https://www.googleapis.com/auth/appengine.admin%20https://www.googleapis.com/auth/cloud-platform
Attempting to open it in your browser now.
Unable to open browser. Please open the URL above and copy the resulting code.
Please enter code:
There is no browser on this computer, a Linux virtual machine, used as the programming opportunity for the School of
Computer Sciences. We simply use putty to log in.
I cut and pasted the address and entered into Chrome into the computer that has run putty. I get the code in that browser. I cut that and tried to paste it back
into the browser. NO luck.
I get
"java.net.ConnectException: Connection refused"
(This has been difficult because this Putty does not seem to have menu items for cut and paste.)
I tried about seven times. Several times, I also tried simply typing the code in carefully. No luck.
The graduate student on the project also tried themselves--no luck!
Thanks for any insight. In particular, it seems I should I ask the system administrator who set up the disk slice with our School of Computer Sciences'
server for a "browser." What should I specifically ask for? I did not see any documentation of what the google appcfg.sh program is doing when it tries to "open it in your browser now."
We have a project on which five people have worked over several year time frame that is dead in the water because we can no longer
deploy.
I'm not sure why the code isn't working - it should. As a work-around why not:
push the code to a git repo (e.g. bitbucket)
pull it to a machine that does have a browser
Set up the browser-machine to run GCloud under the account you're hoping to authenticate with
Deploy from there
I'm trying to save some screen dumps to internal storage for debugging purposes, but I can't seem to get access to them. When I call FileSystemStorage.getInstance().getAppHomePath(), I get a path that looks something like this:
/data/data/com.mycompany.myapp/files/
But I can't see this folder in the Android File Transfer tool, so I can't drag the files to my Mac. I also tried attaching them to an email using the Message class, but for some reason the attachments never showed up. I notice that a lot of applications store data in folders like this:
/Android/data/com.doubletwist.androidplayer/
If I try to create a folder like this, I run into two problems. First, it's not platform independent. (This doesn't matter much because I'm just doing this for debugging.) Second, it doesn't work. I get an error telling me I need to use the directory returned by FileSystemStorage.getInstance().getAppHomePath()
Is there any way I can save files to a folder that I can actually retrieve them from? It would be more helpful if I had a platform-independent way, but any way that works is fine for now.
File system is a very "unportable" notion. By default app home is a private folder which some mobile OS's including Android 4+ keep private and inaccessible.
Android has a concept of "sdcard" which used to be a physical storage where you could write anything in any directory without a problem. This is no longer applicable for later versions of Android but you can read from the sdcard directory and detect it.
FileSystemStorage has an API to get roots and their types, if you have an sdcard type you can read from there. You can use the FileTree to see the file hierarchy as exposed to your application which can be useful for debugging.