Community Q&A

Where Wwise users help each other out!

Audiokinetic's Community Q&A is the forum where Wwise users ask and answer questions within the Wwise community. If you would like to get an answer from Audiokinetic's Technical support team, make sure you use the Support Tickets page.

Unreal Shipping Build on Magic Leap Using Wwise 2018.1.1 and Resonance Crashes

0 votes

Our experience on the Magic Leap is crashing when it tries to run on device. The relevant log chunk is:

11-30 16:21:23.957 2130 2130 F DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-30 16:21:23.957 2130 2130 F DEBUG : Build fingerprint: 'ml/lilly_full/lilly:0.93.0/A1C.180911.09-R.327/14165:user/release-keys'
11-30 16:21:23.957 2130 2130 F DEBUG : Revision: '0'
11-30 16:21:23.957 2130 2130 F DEBUG : ABI: 'arm64'
11-30 16:21:23.957 2130 2130 F DEBUG : pid: 2095, tid: 2127, uid: 116137, name: PeanutButter >>> bin/PeanutButter <<<
11-30 16:21:23.957 2130 2130 F DEBUG : debuggable: true
11-30 16:21:23.957 2130 2130 F DEBUG : signal 7 (SIGBUS), code 1 (BUS_ADRALN), fault addr 0xaaaaaaab
11-30 16:21:23.957 2130 2130 F DEBUG : x0 0000aaaae41c14a8 x1 0000000000000004 x2 00000000ffffffff x3 0000000000000000
11-30 16:21:23.957 2130 2130 F DEBUG : x4 0000000000000000 x5 00000000ffffffff x6 00000000ffffffff x7 0000000000000000
11-30 16:21:23.957 2130 2130 F DEBUG : x8 000040003477e688 x9 0000000000000048 x10 0000aaaae41c13c0 x11 000000000099fe7d
11-30 16:21:23.957 2130 2130 F DEBUG : x12 0000aaaae41c1000 x13 0000000000000001 x14 0000000000000034 x15 0000aaaae41c13c0
11-30 16:21:23.957 2130 2130 F DEBUG : x16 0000400021e8c3d8 x17 0000400021de1c20 x18 0000000000000000 x19 0000000000000004
11-30 16:21:23.957 2130 2130 F DEBUG : x20 0000000000000001 x21 0000000000000004 x22 0000aaaae41c13e0 x23 0000000000000018
11-30 16:21:23.957 2130 2130 F DEBUG : x24 0000aaaae41c14a0 x25 0000aaaae41c14b0 x26 0000aaaae3e04b90 x27 00000000aaaaaaab
11-30 16:21:23.957 2130 2130 F DEBUG : x28 0000000000000003 x29 0000400029e42360 x30 0000aaaae25c16bc
11-30 16:21:23.957 2130 2130 F DEBUG : sp 0000400029e42310 pc 00000000aaaaaaab pstate 0000000020000000
11-30 16:21:23.982 2130 2130 F DEBUG : 
11-30 16:21:23.982 2130 2130 F DEBUG : backtrace:
11-30 16:21:23.982 2130 2130 F DEBUG : #00 pc 00000000aaaaaaab <unknown>
11-30 16:21:23.982 2130 2130 F DEBUG : #01 pc 00000000049806b8 /data/app/com.kitchen.PeanutButter/bin/PeanutButter (_Z21_CallGlobalExtensions24AkGlobalCallbackLocation+192)
11-30 16:21:23.982 2130 2130 F DEBUG : #02 pc 000000000499019c /data/app/com.kitchen.PeanutButter/bin/PeanutButter (_ZN11CAkAudioMgr7PerformEv+476)
11-30 16:21:23.982 2130 2130 F DEBUG : #03 pc 0000000004a1d094 /data/app/com.kitchen.PeanutButter/bin/PeanutButter (_ZN14CAkAudioThread18EventMgrThreadFuncEPv+72)
11-30 16:21:23.982 2130 2130 F DEBUG : #04 pc 000000000006b634 /system/lib64/libc.so (_ZL15__pthread_startPv+36)
11-30 16:21:23.982 2130 2130 F DEBUG : #05 pc 000000000001e5bc /system/lib64/libc.so (__start_thread+44)

The "AkAudioMgr" in the stack trace leads me to believe that this is a problem related to Wwise audio. This crash does NOT happen with Development builds.

Here are the technologies that we are using:

  • A custom build of the Unreal engine loosely based on Unreal 4.20
  • Our experience is built against the Magic Leap SDK 0.17
  • It is running on a Retail headset running Lumin OS 0.93
  • Wwise 2018.1.1.6727
  • Google Resonance Audio SDK version 2018.1.1.6727 (according to the Wwise Launcher)
  • Builds are being made on a PC running Windows 10
  • Code is compiled with Visual Studio 2017 (version 15.9.3)

We were also able to reproduce this using a bare bones Unreal project with no meaningful content. This was still using our custom version of Unreal though.

Is Resonance still a supported plug-in?

asked Dec 6, 2018 in General Discussion by Robert G. (180 points)

1 Answer

0 votes

We are able to fix this problem by upgrading our version of Wwise to 2018.1.4.6807 and the Resonance plug-in to 2018.1.3.10, then applying a small patch that Audiokinetic provided.

The patch changes the following section in Plugins/Wwise/Source/AkAudio/AkAudio.Build.cs from

else if (Target.Platform == UnrealTargetPlatform.Lumin)
{
    akPlatformLibDir.Add("Lumin");
    Defs.Add("AK_LUMIN");
}

...to....

else if (Target.Platform == UnrealTargetPlatform.Lumin)
{
    akPlatformLibDir.Add("Lumin");
    Defs.Add("AK_LUMIN");
    string PluginPath = Utils.MakePathRelativeTo(ModuleDirectory, Target.RelativeEnginePath);
    System.Console.WriteLine("Adding Resonance UPL script");
    AdditionalPropertiesForReceipt.Add("LuminPlugin", Path.Combine(PluginPath, "ResonanceAudio_UPL.xml"));
}
 

The patch also adds a new file called ResonanceAudio_UPL.xml into the same folder as AkAudio.Build.cs. The contents of this new file are:

<?xml version="1.0" encoding="utf-8"?>
<!--Resonance Audio plugin additions-->
<root>
  <!-- init section is always evaluated once per architecture -->
  <init>
    <log text="Wwise Resonance Audio init"/>
  </init>

  <!--optional files or directories to copy to Intermediate/Android/APK-->
  <stageFiles>
    <log text="Copying Resonance Audio files to staging : $S(BuildDir)"/>
    <isArch arch="arm64-v8a">
      <copyFile src="$S(PluginDir)/../../ThirdParty/Lumin/Profile/bin/libResonanceAudio.so"
          dst="$S(ProjectDir)/Saved/StagedBuilds/Lumin/bin/libResonanceAudio.so" />
          </isArch>
  </stageFiles>
</root>

Making these changes allowed us to successfully run Shipping builds on Magic Leap devices.

 

 
answered Jan 16 by Robert G. (180 points)
...