UnsatisfiedLinkError when compiling WebRtc M109+ for Android

[Mike Grabski]

Hello

After compiling any of the WebRTC releases from M109 onwards, I am facing the following exception, when trying to initialize PeerConnectionFactory:

```

java.lang.UnsatisfiedLinkError: No implementation found for long org.webrtc.SoftwareVideoDecoderFactory.nativeCreateFactory() (tried Java_org_webrtc_SoftwareVideoDecoderFactory_nativeCreateFactory and Java_org_webrtc_SoftwareVideoDecoderFactory_nativeCreateFactory__)
                                                                                                    at org.webrtc.SoftwareVideoDecoderFactory.nativeCreateFactory(Native Method)
                                                                                                    at org.webrtc.SoftwareVideoDecoderFactory.<init>(SoftwareVideoDecoderFactory.java:23)
                                                                                                    at org.webrtc.DefaultVideoDecoderFactory.<init>(DefaultVideoDecoderFactory.java:22)

```

I have narrowed it down to the following commit: c97651cbb4e94ef3f9768015c2bb3b93c953ebe9 - src - Git at Google (googlesource.com)

Reverting that commit fixes the issue for all versions of WebRtc.

Tested with M109, M112 and M113. 

I looked into the buildscripts, everything seems fine...

Here are the steps I am using to build WebRtc on Ubuntu 20.04:

1. Checkout the proper branch head

2. execute gclient sync

3. execute /build/install-build-deps.sh

4. execute /tools_webrtc/android/build_aar.py

Has anyone faced a similar issue? 

Any ideas/tips to fix the issue would be highly appreciated! 

Thanks

Mike

[Tomer Petel]

Hi, any conclusions here? I'm getting hit by the same version 

[Tomer Petel]

I think I've found the issue. The crash will occur when trying to  new DefaultVideoDecoderFactory/DefaultVideoEncoderFactory before 

PeerConnectionFactory.initialize(PeerConnectionFactory.InitializationOptions.builder(context)
.setEnableInternalTracer(true)
.createInitializationOptions());

Try to construct them after and it'll probably work.