[android-porting] Adding custom audio effect on intrinsyc 835 with Android-O

[Mantesh Eksambe]

I have added effect interface wrapper at hardware/qcom/audio/post_proc/ and
add this effect in audio_effect.conf file under proxy section as below

custom_effect {
library proxy
uuid b8e70ecd-48ca-456e-8a4f-0002a5d5c51b

libsw {
library bundle
uuid b0dac280-401c-11e3-9379-0002a5d5c51b
}

libhw {
library my_effect
uuid b0dac280-401c-11e3-9379-0002a5d5c51b
}
}

1. my_effect - this is my custom effect wrapper
2. So I am bit confuse about audio_effect.conf configuration which i have
added.
3. I want know how "proxy" will control both effect "libsw" and "libhw"
4. By using which UUID i should invoke my custom effect?

With above process i'm facing following issue. Please do let me know if i'm
doing wrong. Thanks in advance.

AudioFlinger: processConfigEvents_l() DONE thread 0xecce8000
05-03 05:36:10.866 1093 3462 V AudioFlinger: wait async completion (wait
time: 9223372036854775807)
05-03 05:36:10.867 1093 2077 V AudioFlinger: createEffect pid 3476,
effectClient 0xeb68ea40, priority 0, sessionId 0, io 0, factory 0xecc989c0
05-03 05:36:10.867 1093 2077 D PermissionCache: checking
android.permission.MODIFY_AUDIO_SETTINGS for uid=10124 => granted (520 us)
05-03 05:36:10.868 819 1242 E EffectFactoryHAL: Error querying effect
descriptor for b0dac280-401c-11e3-9379-0002a5d5c51b: No such file or
directory
05-03 05:36:10.868 1093 2077 W AudioFlinger: createEffect() error -2 from
EffectGetDescriptor
05-03 05:36:10.869 3476 3476 E AudioEffect: set(): AudioFlinger could not
create effect ec7178ec-e5e1-4432-a3f4-4657e6795210 /
b0dac280-401c-11e3-9379-0002a5d5c51b, status: -2
05-03 05:36:10.869 3476 3476 E AudioEffects-JNI: AudioEffect initCheck
failed -3
05-03 05:36:10.869 3476 3476 V AudioEffect: Destructor 0x7b3f626140
05-03 05:36:10.870 3476 3476 E AudioEffect-JAVA: Error code -3 when
initializing AudioEffect.
05-03 05:36:10.870 3476 3476 D AndroidRuntime: Shutting down VM
05-03 05:36:10.872 1093 1485 V AudioFlinger: ###
AudioFlinger::MixerThread::prepareTracks_l
05-03 05:36:10.872 1093 1485 V AudioFlinger: onIdleMixer
05-03 05:36:10.875 1093 1487 V AudioFlinger: ###
AudioFlinger::MixerThread::prepareTracks_l
05-03 05:36:10.875 1093 1487 V AudioFlinger: onIdleMixer
05-03 05:36:10.876 1093 1491 V AudioFlinger: ###
AudioFlinger::MixerThread::prepareTracks_l
05-03 05:36:10.876 1093 1491 V AudioFlinger: onIdleMixer
--------- beginning of crash
05-03 05:36:10.876 3476 3476 E AndroidRuntime: FATAL EXCEPTION: main
05-03 05:36:10.876 3476 3476 E AndroidRuntime: Process:
com.example.android.dtsdecimation, PID: 3476
05-03 05:36:10.876 3476 3476 E AndroidRuntime:
java.lang.RuntimeException: Cannot initialize effect engine for type:
ec7178ec-e5e1-4432-a3f4-4657e6795210 Error: -3
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
android.media.audiofx.AudioEffect.<init>(AudioEffect.java:416)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
android.media.audiofx.DtsDecimation.<init>(DtsDecimation.java:89)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
com.example.android.dtsdecimation.DtsDecimationEffect.getInstance(DtsDecimationEffect.java:19)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
com.example.android.dtsdecimation.Presenter.onDecimationStatusChanged(Presenter.java:41)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
com.example.android.dtsdecimation.databinding.ActivityMainBinding._internalCallbackOnCheckedChanged(ActivityMainBinding.java:219)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
android.databinding.generated.callback.OnCheckedChangeListener.onCheckedChanged(OnCheckedChangeListener.java:11)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
android.widget.CompoundButton.setChecked(CompoundButton.java:171)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
android.support.v7.widget.SwitchCompat.setChecked(SwitchCompat.java:1062)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
android.support.v7.widget.SwitchCompat.toggle(SwitchCompat.java:1057)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
android.widget.CompoundButton.performClick(CompoundButton.java:132)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
android.view.View$PerformClick.run(View.java:24774)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
android.os.Handler.handleCallback(Handler.java:790)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
android.os.Handler.dispatchMessage(Handler.java:99)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
android.os.Looper.loop(Looper.java:164)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
android.app.ActivityThread.main(ActivityThread.java:6518)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
java.lang.reflect.Method.invoke(Native Method)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
05-03 05:36:10.876 3476 3476 E AndroidRuntime: at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)