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[ROOT] How to undo ViPER4Android

I tried to install V4A on my HTC One with 5.0 GPE but failed.
I had installed something which completely messed up the audio, nothing worked!
So here is a flashable zip which should solve most audio issues.
It is tested with the Android 5 GPE ROM for the HTC One M7.
in short, this will undo any audio mods or hacks.

If you install Viper4Android 2 things are changed on your device:
1) It adds 2 sections to your /etc/audio_effects.conf file
libraries {
Code:
v4a_fx {
path /system/lib/soundfx/libv4a_fx_ics.so
}
and
effects {
Code:
v4a_standard_fx {
library v4a_fx
uuid 41d3c987-e6cf-11e3-a88a-11aba5d5c51b
}
2) copies the driver to /system/lib/soundfx/libv4a_fx_ics.so
This driver can differ in name.
If you uninstall Viper4Android you need to uninstall the driver first from the Viper4Android settings menu. After that uninstall the Viper4Android app.
But you still need to check the /etc/audio_effects.conf file or restore your original one.
Cheers

CM13 / AOSP, XTREMEMusic, Viper4Android or AudioFX no effect

Hi guys,
I've followed the extended installation instructions for XTREMEMusic:
Have permissive kernel ( [check] )
SuperSU System-Mode; disable mount namespace separation [check]
install BusyBox (as suggested by Viper4Android during installation)
install XTREMEMusic (or Viper4Android) [check]
But whether I installed Viper4Android or XTREMEMusic,
both have no effect,
AudioFX also appears to have no effect - so this indicates a ROM-side issue, which needs to be fixed/worked around yet
Have you observed anything similar on other devices or ROMs ?
Thanks !

Hi. I had same experience on z3 when using viper4android. Could "use" the mod, but could not notice any change in output sound. Never found any solution ?
Sent from my E6653 using Tapatalk

[MOD][APPS]Sound setup for Galaxy S Duos GT-S7562 with PAC 4.4.4 RC-3 ROM

I would like to share to you a sound setup that would improve the sound quality of your device to your preferences. This is a bunch of guides I searched in XDA forums and tested them with my PAC-ROM KK RC-3 setup. Though it is a software-level modification, I found the end result quite pleasing.
Disclaimer:
I am not responsible for any damage that this may cause you. As a golden rule, make sure you to run a full backup of your current setup in case something goes wrong with the process. I have only tested this in my device (model: S7562). Do follow the instructions extensively.
Pre-requisite:
~An android 4.4.4 Custom ROM
~Latest TWRP custom recovery built
~With root and Busybox installed
Instructions:
1.) Download and flash the 4.4.x Viper4android driver found here.
2.) Run this current Viper4android app. That should prompt a driver installation dialog box. Proceed installing it and choose what ever mode.
3.) Download and install the latest Viper4android apk. (currently using 2.5.0.5).
4.) Run this latest Viper4android app in order to update the driver to the latest.
5.) You can now disable the old Viper4android app (the one with the violet icon).
6.) Setup the Viper4android the way you like it, and also use a music player that integrates an equalizer (like Phonography or Spotify) and your good to go.
Current headset profile (got it from this):
Master power - on
Playback gain control - off
FET compressor - off
Viper DDC - on, set to sennheiser hd558
Spectrum extension - on, set to 1.0
Firequalizer - off
Convolver - on, set to Samsung soundalive tubeamp(included in the IRS samples)
Differential surround, field surround, headphone surround+, reverberation - all set to off
Dynamic system - off
Viper bass - off
Viper clarity - off
Tube sound simulator - off
AnalogX - on, set to extreme
Rest all are turned off or kept the default.

Links:
Viper4android driver: https://forum.xda-developers.com/oneplus-one/themes-apps/app-viper4android-v2-3-4-0-t3040014
Latest Viper4android apk: https://forum.xda-developers.com/showthread.php?t=2191223
IRS Samples: https://forum.xda-developers.com/attachment.php?attachmentid=4133893&d=1493617480
Thanks to @ScreaMySkrillEX , @gianton , @pavlepiramida, @zhuhang

RRR

Really appreciate the credits!
Thanks.....
ScreaMySkrillEX

{Guide} Install the best sound mods for android 10

hi,
This is a full guide on installing the best sound mods and get a flagship grade audio performance in android 10
I'm not a developer. all credits goes to the developers of ainur audio and viper4android.
please hit thanks if I helped.
1- Uninstall all of your existing audio mods
2- make sure that the kernel is permissive to avoid any issue, if not, make this step:
just put the following inside a file ( you can name it whatever, say "selinux", doesn't even need an extension), place it in /data/adb/service.d, give it execution permission and that's it:
#!/system/bin/sh
setenforce 0
That'll change to permissive at each boot.
3-Install audio mods from Magisk in this exact order:
a- Ainur Sauron Then reboot to TWRP recovery and mount all partitions
then go to /data/ADB/modules/ Ainur SAURON > delete services.sh to avoid boot loops then reboot to system,
b- install Viper4Android and don't open it then reboot the system and open Viper4android, install drivers then reboot to recovery,
mount everything and go to the file manager, copy the file post-fs-data.sh to /data/ADB/modules/viper4android then reboot system,
c- install Audio Mod Library (AML), reboot.
4- open viper4android and apply these settings to enjoy a great sound quality from my experience:
speaker > enable master limiter > enable playback gain control and modify the output threshold value to 0.
Headset > enable master limiter > enable playback gain control and modify the output threshold value to 0,
> enable FIR equalizer and use these values: 3.5 - 6.0 - 3.0 - 0.0 -0.0 - 0.0 - 0.0 - 0.0 - 0.0 - -0.5
> enable convolver and put the attached file Htc Beats Audio in the kernel folder inside viper4android folder > select impulse response and select HTC Beats Audio file in kernel folder > cross channel 25%.
> enable headphone surround+ level 2 > enable dynamic system only without modifications of the vlaues under it.
> enable viper bass, bass mod: natural bass - bass frequency: 80HZ - Bass gain: 10dB
> enable viper clarity , Clarity mode: natural - clarity gain 8dB.
For Bluetooth and USB, apply the same headset settings.
Enjoy the quality sound and hit thanks :laugh:

Not work but I found my ways
Using android Q

Series of the nightfall said:
Not work but I found my ways
Using android Q
Click to expand...
Click to collapse
May I ask, what are your ways?
It's not working for me.
I understand if it's complicated or tedious, but if it's a few simple steps I would be delighted to learn from you and try my luck a few more times...

Dolby+viper

Both Dolby and viper are working on weekly eu beta android 11. The problem is they only work separately and not together even with audio modification library and patch modules. I know some prefer only one and say that it's better than the other but I'm only able to get a satisfying sound by combining both. They both also work fine on android 10 though I'd like to stay on the latest weekly because it is stable enough for me and has some slight improvements over android 10. And I know some consider android 11 still too buggy and won't bother answering questions about it but I'm still wondering if there's a way. If someone knows a way to get both working together please share it here. Thank you

have you tried setting kernel to permissive?

dead0 said:
have you tried setting kernel to permissive?
Click to expand...
Click to collapse
Yeah permissive is actually needed for Dolby to work

strangely, i can get viper and dolby to work in enforcing mode on my poco f1 but on f2 with miui 12.0.8 A10, need the kernel to be permissive. im using dolby digital by @repey6 and the older viper 2.4.0.1.
now you could try the following:
Code:
create dolby_prop dts_data_file
permissive audioserver mediaserver hal_audio_default audio_prop dolby_prop dts_data_file priv_app
allow { audioserver mediaserver } { audioserver_tmpfs mediaserver_tmpfs } file { read write execute }
allow { audioserver mediaserver } system_file file execmod
allow { audioserver mediaserver } dts_data_file dir { read execute open search getattr associate }
allow audioserver unlabeled file { read write execute open getattr }
allow audioserver labeledfs filesystem associate
allow hal_audio_default hal_audio_default process execmem
allow hal_audio_default hal_audio_default_tmpfs file execute
allow hal_audio_default audio_data_file dir search
allow hal_audio_default dts_data_file dir { read write open setattr add_name create remove_name unlink execute}
allow priv_app app_data_file file { read write execute open getattr execute_no_trans }
allow priv_app property_socket sock_file { getattr open read write execute }
allow priv_app init unix_stream_socket connectto
setenforce 0
create a file - whatevername.sh in data/adb/service.d with 755 permission and copy the above into it. this will need to be done after magisk install. im currently testing a modded miuimmx v10 which has dolby and viper built in with the above code as my F1 is still my daily driver

dead0 said:
strangely, i can get viper and dolby to work in enforcing mode on my poco f1 but on f2 with miui 12.0.8 A10, need the kernel to be permissive. im using dolby digital by @repey6 and the older viper 2.4.0.1.
now you could try the following:
create a file - whatevername.sh in data/adb/service.d with 755 permission and copy the above into it. this will need to be done after magisk install. im currently testing a modded miuimmx v10 which has dolby and viper built in with the above code as my F1 is still my daily driver
Click to expand...
Click to collapse
Ty will try

Unable to me for installing viper.
I'm on xiaomi.eu 12.2 latest beta.
How do you proceed for viper?
Thanks.