Re: [fluid-dev] Android app questions and issues

[Stanislav Kokorev]

Hello Tom,

Thanks for your comments.

Regarding the issue with armeabi-7A - I made several experiments and
it works as follows:
My app supports Android from 23 up to 29.
The test release of the app which was built just for armeabi-7A plays
fine on modern phones with 64 -bit CPU.
Have tested on Xiaomi MI 9 Lite and Samsung A50.

But, also, I;m  testing the app on my old tablet Asus TF300 with
32-bit CPU and here I met crash on the line
Java.Lang.JavaSystem.LoadLibrary("fluidsynth");
So, in my humble understanding the .so files of fluidsynth in
armeabi-7A folder working fine with 64 -bit but not supporting
32-bit...

Below are numerous words copied from exception object:

System.Reflection.TargetInvocationException
Exception has been thrown by the target of an invocation.
dlopen failed: cannot locate symbol "in6addr_any" referenced by
"/data/app/com.abex.FAMIDI-1/lib/arm/libfluidsynth.so"...
CanonicalName "java.lang.UnsatisfiedLinkError" string
GenericParameterAttributes System.InvalidOperationException: Method
may only be called on a Type for which Type.IsGenericParameter is
true. System.Reflection.GenericParameterAttributes
KeyHandle Не удалось привести тип объекта
"Mono.Debugger.Soft.PointerValue" к типу
"Mono.Debugger.Soft.PrimitiveValue".

-$exception {System.Reflection.TargetInvocationException: Exception
has been thrown by the target of an invocation. --->
Java.Lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol
"in6addr_any" referenced by
"/data/app/com.abex.FAMIDI-1/lib/arm/libfluidsynth.so"...
  at Java.Interop.JniEnvironment+StaticMethods.CallStaticVoidMethod
(Java.Interop.JniObjectReference type, Java.Interop.JniMethodInfo
method, Java.Interop.JniArgumentValue* args) [0x0006e] in
<42748fcc36b74733af2d9940a8f3cc8e>:0
  at Java.Interop.JniPeerMembers+JniStaticMethods.InvokeVoidMethod
(System.String encodedMember, Java.Interop.JniArgumentValue*
parameters) [0x00018] in <42748fcc36b74733af2d9940a8f3cc8e>:0
  at Java.Lang.JavaSystem.LoadLibrary (System.String libname)
[0x00029] in <7d2292394f8c488b97f5bc2a0ac0240d>:0
  at FA.Droid.FluidSynth.CreateFluidSynth () [0x00001] in
D:\ProjectsVS19\FA DB\FA\FA.Android\FluidSynth.cs:140
  at FA.Droid.MidiWorker..ctor () [0x00016] in D:\ProjectsVS19\FA
DB\FA\FA.Android\MidiWorker.cs:51
  at (wrapper managed-to-native)
System.Reflection.RuntimeConstructorInfo.InternalInvoke(System.Reflection.RuntimeConstructorInfo,object,object[],System.Exception&)
  at System.Reflection.RuntimeConstructorInfo.InternalInvoke
(System.Object obj, System.Object[] parameters, System.Boolean
wrapExceptions) [0x00005] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/corlib/System.Reflection/RuntimeMethodInfo.cs:936
   --- End of inner exception stack trace ---
  at System.Reflection.RuntimeConstructorInfo.InternalInvoke
(System.Object obj, System.Object[] parameters, System.Boolean
wrapExceptions) [0x00018] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/corlib/System.Reflection/RuntimeMethodInfo.cs:944
  at System.RuntimeType.CreateInstanceMono (System.Boolean nonPublic,
System.Boolean wrapExceptions) [0x00095] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/corlib/ReferenceSources/RuntimeType.cs:185
  at System.RuntimeType.CreateInstanceSlow (System.Boolean publicOnly,
System.Boolean wrapExceptions, System.Boolean skipCheckThis,
System.Boolean fillCache) [0x00009] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/corlib/ReferenceSources/RuntimeType.cs:155
  at System.RuntimeType.CreateInstanceDefaultCtor (System.Boolean
publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache,
System.Boolean wrapExceptions, System.Threading.StackCrawlMark&
stackMark) [0x00027] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/referencesource/mscorlib/system/rttype.cs:5770
  at System.Activator.CreateInstance (System.Type type, System.Boolean
nonPublic, System.Boolean wrapExceptions) [0x00039] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/referencesource/mscorlib/system/activator.cs:206
  at System.Activator.CreateInstance (System.Type type, System.Boolean
nonPublic) [0x00000] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/referencesource/mscorlib/system/activator.cs:190
  at System.Activator.CreateInstance (System.Type type) [0x00000] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/referencesource/mscorlib/system/activator.cs:134
  at Xamarin.Forms.DependencyService.Get[T]
(Xamarin.Forms.DependencyFetchTarget fetchTarget) [0x00099] in
D:\a\1\s\Xamarin.Forms.Core\DependencyService.cs:52
  at FA.MainPage.InitializeMIDI () [0x00001] in D:\ProjectsVS19\FA
DB\FA\FA\MainPage.xaml.cs:2581
  at FA.MainPage..ctor () [0x001aa] in D:\ProjectsVS19\FA
DB\FA\FA\MainPage.xaml.cs:213
  at FA.App..ctor () [0x00025] in D:\ProjectsVS19\FA DB\FA\FA\App.xaml.cs:22
  at FA.Droid.MainActivity.OnCreate (Android.OS.Bundle
savedInstanceState) [0x0011e] in D:\ProjectsVS19\FA
DB\FA\FA.Android\MainActivity.cs:93
  at Android.App.Activity.n_OnCreate_Landroid_os_Bundle_
(System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr
native_savedInstanceState) [0x0000f] in
<7d2292394f8c488b97f5bc2a0ac0240d>:0
  at (wrapper dynamic-method)
Android.Runtime.DynamicMethodNameCounter.5(intptr,intptr,intptr)}
System.Reflection.TargetInvocationException


  at System.Reflection.RuntimeConstructorInfo.InternalInvoke
(System.Object obj, System.Object[] parameters, System.Boolean
wrapExceptions) [0x00018] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/corlib/System.Reflection/RuntimeMethodInfo.cs:944
  at System.RuntimeType.CreateInstanceMono (System.Boolean nonPublic,
System.Boolean wrapExceptions) [0x00095] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/corlib/ReferenceSources/RuntimeType.cs:185
  at System.RuntimeType.CreateInstanceSlow (System.Boolean publicOnly,
System.Boolean wrapExceptions, System.Boolean skipCheckThis,
System.Boolean fillCache) [0x00009] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/corlib/ReferenceSources/RuntimeType.cs:155
  at System.RuntimeType.CreateInstanceDefaultCtor (System.Boolean
publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache,
System.Boolean wrapExceptions, System.Threading.StackCrawlMark&
stackMark) [0x00027] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/referencesource/mscorlib/system/rttype.cs:5770
  at System.Activator.CreateInstance (System.Type type, System.Boolean
nonPublic, System.Boolean wrapExceptions) [0x00039] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/referencesource/mscorlib/system/activator.cs:206
  at System.Activator.CreateInstance (System.Type type, System.Boolean
nonPublic) [0x00000] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/referencesource/mscorlib/system/activator.cs:190
  at System.Activator.CreateInstance (System.Type type) [0x00000] in
/Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/referencesource/mscorlib/system/activator.cs:134
  at Xamarin.Forms.DependencyService.Get[T]
(Xamarin.Forms.DependencyFetchTarget fetchTarget) [0x00099] in
D:\a\1\s\Xamarin.Forms.Core\DependencyService.cs:52
  at FA.MainPage.InitializeMIDI () [0x00001] in D:\ProjectsVS19\FA
DB\FA\FA\MainPage.xaml.cs:2581
  at FA.MainPage..ctor () [0x001aa] in D:\ProjectsVS19\FA
DB\FA\FA\MainPage.xaml.cs:213
  at FA.App..ctor () [0x00025] in D:\ProjectsVS19\FA DB\FA\FA\App.xaml.cs:22
  at FA.Droid.MainActivity.OnCreate (Android.OS.Bundle
savedInstanceState) [0x0011e] in D:\ProjectsVS19\FA
DB\FA\FA.Android\MainActivity.cs:93
  at Android.App.Activity.n_OnCreate_Landroid_os_Bundle_
(System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr
native_savedInstanceState) [0x0000f] in
<7d2292394f8c488b97f5bc2a0ac0240d>:0
  at (wrapper dynamic-method)
Android.Runtime.DynamicMethodNameCounter.5(intptr,intptr,intptr)

BR,
Stanislav

сб, 31 окт. 2020 г. в 14:32, Tom M. via fluid-dev <fluid-dev@nongnu.org>:
>
> > 1) Not enough loud:
>
> It's not clear what you mean by "artifacts". Is it clipping?
> Interruptions? Distortions?
>
> Ideally provide the broken audio rendering. But without the soundfont
> and a test MIDI it's very hard to tell what's wrong. Try a different
> audio driver. Or use the file renderer to write to a file and see
> whether it reproduces the "artifacts". If yes, it might be a problem
> with fluidsynth. If not, probably somewhere else in your android phone.
>
> > 2) I have tried both variants and don't hear any difference.
>
> audio.period-size influences the latency of the audio. If you are
> suffering from interruptions, increase its value.
>
> Regarding the sample-rate: It would be really surprising if you heard
> the difference between 44 and 48 kHz.
>
> > What is recommended approach?
>
> Set both values to what your device reports.
>
> > 3)
>
> That performance mode it passed as hint to Oboe.
>
> https://google.github.io/oboe/reference/classoboe_1_1_audio_stream_builder.html#a6cd1d65612e844e59da71a68ea0ab3ee
>
> We have no control what they make with it. You'll need to ask Oboe.
>
> > 4) libs for armeabi-v7a are not working.
>
> Where is it failing? In an emulator or on real hardware? Try to get a
> more meaningful error. Watch out for inner exceptions. Double check that
> all depending libs are available as well.
>
>
> Tom
>
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