Develop Reference

Error while compiling Web RTC for Android

I am developing app of video chat in Web RTC.
I am going through documentation of Web RTC.
I have followed all steps mentioned for Getting the Code
export GYP_DEFINES="OS=android"
fetch --nohooks webrtc_android
gclient sync
I have all src code of web rtc in my root directory. As per documentation say we have to compile source to use in our application. Here i got error while compiling source using following command.
$ gn gen out/Default --args='target_os="android" target_cpu="arm"'
ERROR at //build/config/android/internal_rules.gni:636:3: Can't load input file.
import("//third_party/ijar/ijar.gni")
^-----------------------------------
Unable to load:
/Users/c86/webrtc-checkout/src/third_party/ijar/ijar.gni
I also checked in the secondary tree for:
/Users/c86/webrtc-checkout/src/build/secondary/third_party/ijar/ijar.gni
See //build/config/android/rules.gni:8:1: whence it was imported.
import("//build/config/android/internal_rules.gni")
^-------------------------------------------------
See //webrtc/examples/BUILD.gn:12:3: whence it was imported.
import("//build/config/android/rules.gni")
^----------------------------------------
See //BUILD.gn:13:5: which caused the file to be included.
"//webrtc/examples",
^------------------
How can I solve this? Am I going in right direction to develop app of video chat on Web RTC?

Building WebRTC for Android is only supported on Ubuntu(14 / 16).
Currently not supported in macOS.

Failed to load native library

Failed to load native library when i work with ndk functions in android studio. so please help me i am new for doing this and please correct me if wrong any where. Actually i was doing some scanning document using cardio sdk.
Basically i want to scan any document like cardio but i want to scan boundary not text or number only boundary of documents. if you have any other solution then please suggest me.
This is my activity code.
if (nUseNeon()) {
System.loadLibrary("cardioRecognizer");
Log.i(Util.PUBLIC_LOG_TAG, "Loaded card.io NEON library");
}
This is my error in my log cat.
Failed to load native library: JNI_ERR returned from JNI_OnLoad in "/data/app/com.surfaceview2-1/lib/arm/libcardioRecognizer.so"

Please check that:
1) you have the libcardioRecognizer.so library in the folder: app/src/main/jniLibs/armeabi of your Android Studio project
2) the library is compatibile with the architecture of the device you're using. If not, you can compile it and place in the folder:
app/src/main/jniLibs/armeabi-v7a (for arm-v7 architecture)
app/src/main/jniLibs/x86 (for x86 architecture)

Have a trouble with developing an app for smarteyeglass

Recently,i need to build an app for smart eyeglass. with official instruction,i have to import three library project,including SmartExtensionAPI,SmartExtensionUtils SmartEyeglassAPI.and i have develop dependencies for my project when i run this app, there a lot of error information.
such as Error:(44, 57)
com.sonyericsson.extras.liveware.aef.notification is not
existing;Error:(45, 57)
com.sonyericsson.extras.liveware.aef.registration is not
existiong!Error:(49, 52)com.sonyericsson.extras.liveware.aef.control
is not existing,Error:(198, 40)Registration.Intents is not existing
and so on.
what's wrong? search for help.
thanks

It seems like you are missing registration for your extension in your application.
Please take a look at sample projects for details. You can also start developing directly using sample projects in the SDK.

Xamarin Forms Ui project (Multiplatform)

I am making this UI for a multiplatform app using Xamarin on my Macbook.
I have set FormsUI as startup project.
Xamarin gives errors when i try to run the project on ios simulator.
/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/iOS/Xamarin.iOS.Common.targets:
Error: Failed to load output manifest for ibtool: Unrecognized property list format. (XPlatformFormsUI.iOS)
/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/iOS/Xamarin.iOS.Common.targets:
Error: Output manifest contents: (XPlatformFormsUI.iOS)

This particular error has been mentioned in the Xamarin Forms forum; basically, something in one of the iOS assets (e.g. a storyboard) is the cause. Unfortunately, you don't get much information regarding WHICH asset it was in the error. Try creating a brand new solution and gradually introduce your changes until you hit the error.

Unsatisfied link error for native library

I developed applications which use native code. All of a sudden those are not working, giving error "Unsatisfied link error: Couldn't load native library from loader dalvik.System.pathClassLoader, findLibrary returned null. I restarted adt twice. Still getting the same error. Applications which are not using native code, are working fine.

The error implies that the program is not able to find the shared libraries that you would have created.
Which devices did you try it on ?
You can check once if they are available in libs directory of your app . [/data/data/app_id/lib ]. Also check if armv7 support is required and if the directory is there in the libs , is .so present there.

Now it's working. I deleted all my virtual devices and then created a new one. However it's showing "skipped 264 frames. application may be doing too much work on main thread" many times and whenever we press a button, displaying this message in log "error loading /system/media/audio/ui/Effect_Tick.ogg"
thanks.