[APP][ALL ROOT SOLUTIONS][6.0+]ViPER4Android FX 2.7

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DanGLES3

Senior Member
Nov 11, 2017
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720
For those who do not work the latest version of Viper4Android FX.

I have used this one since it came out in LineageOS 16.0 Android P. Until I updated to the latest version and the driver stopped working and was not installed.

For now, I have not seen this version of XDA Labs connect to the internet.

It is version 2.7.0.0


(I do not know if I can pass Viper's apk here, if I can not, tell me and I'll eliminate it)
It doesn't connect to the internet because the 2.6 and the new 2.7 versions had the entire apps rewritten from scratch
 
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stankyou

Senior Member
Dec 20, 2010
1,747
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Personally it's ok for me to have this app renamed to something different to avoid the confusion with the legacy app. Mamba4Android maybe? Lol.

Anyway, anyone else using Oneplus 5T got the app working and not stop processing in the middle of music playback?

Sent from my OnePlus 5T using XDA Labs
 
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z3ki

Member
Sep 10, 2014
40
2
How do I get this running on the OnePlus 5T with latest 9.0?
Installing with drivers like a charm but no "processing".


Have you activated Master limiter?
 

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agplugged

Senior Member
Oct 23, 2016
159
53
OnePlus 8T
My experience with 2.7.1 was an odd one, and I can't understand the reason for the update.
The session toggle behaves unpredictably - some apps use session 0, some don't, and switching between them makes for a rather unintuitive experience.
Also, while toggling the attach audio effects on, makes Viper lag after starting new sessions (like skipping songs, podcasts etc.), Which disrupts the whole listening experience.
Installing ACP solves this problem and makes the use of the toggle obsolete. I'd like to understand why the toggle operates the way to does and what's the idea behind it besides "not using ACP".

Compatibility mode also causes issues while using several sessions (such as a music player combined with GMaps or Waze).
Again - installing ACP solves these problems, as far as I can tell.
 
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Zackptg5

Recognized Developer
Sep 18, 2014
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My experience with 2.7.1 was an odd one, and I can't understand the reason for the update.
The session toggle behaves unpredictably - some apps use session 0, some don't, and switching between them makes for a rather unintuitive experience.
Also, while toggling the attach audio effects on, makes Viper lag after starting new sessions (like skipping songs, podcasts etc.), Which disrupts the whole listening experience.
Installing ACP solves this problem and makes the use of the toggle obsolete. I'd like to understand why the toggle operates the way to does and what's the idea behind it besides "not using ACP".

Compatibility mode also causes issues while using several sessions (such as a music player combined with GMaps or Waze).
Again - installing ACP solves these problems, as far as I can tell.
The toggle exists because many music apps have crap code that don't use audio session properly or haven't been updated in years and still use deprecated session 0. It's not the vault of v4a but of those apps. It's the best solution that could be come up with unfortunately
 

agplugged

Senior Member
Oct 23, 2016
159
53
OnePlus 8T
The toggle exists because many music apps have crap code that don't use audio session properly or haven't been updated in years and still use deprecated session 0. It's not the vault of v4a but of those apps. It's the best solution that could be come up with unfortunately
To my understanding ACP was made to solve said problem, am I mistaken?
 

Zackptg5

Recognized Developer
Sep 18, 2014
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To my understanding ACP was made to solve said problem, am I mistaken?
No, acp is just a collection of hacks to get around this issue. Aml has one in it as well which pretty much forces apps to all use the same session. So they're not actually fixing anything, just hacky workarounds. The only way to truly fix it is for app devs to update their apps :/
But whatever works
 

agplugged

Senior Member
Oct 23, 2016
159
53
OnePlus 8T
No, acp is just a collection of hacks to get around this issue. Aml has one in it as well which pretty much forces apps to all use the same session. So they're not actually fixing anything, just hacky workarounds. The only way to truly fix it is for app devs to update their apps :/
But whatever works
Thanks for illuminating the subject for me. I appreciate the response and the work you put in each of these modules! I highly doubt Spotify would change the way its app works but one could hope, I suppose~
 

marciozomb13

Senior Member
Apr 30, 2012
1,253
1,881
Rio de Janeiro
Thanks for illuminating the subject for me. I appreciate the response and the work you put in each of these modules! I highly doubt Spotify would change the way its app works but one could hope, I suppose~
Spotify is a great app but the problem of it always it 'announces' as a media app each time even without using it and 'stealing' my audio sessions are kinda annoying. Don't have any problem with Deezer.
 
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MrBrady

Senior Member
Oct 26, 2010
3,314
900
Silicon Valley
I think I have the same with Waze.

Sent from my ONEPLUS A6000 using Tapatalk

Here's a setup that works for me with Google Maps Navigation audio while using Android Auto. Pixel 2 XL running Dirty Unicorns & Sultan kernel.
  1. Install this Viper app, grant root access and let it install drivers. Reboot.
  2. Open Viper, open Settings, enable "Compatibility mode". According to the release notes, this lets everything work in Car Mode (if I'm reading it correctly).
  3. Install Audio Modification Library Magisk module. Reboot.
  4. Open Viper. Mine asked me to install the drivers again, so I did. Reboot.
  5. Profit
I tried this before with "Attach audio effects" enabled, but it was causing Viper to cut in-and-out depending on what app was playing audio. For example, it would process music through Spotify, but then a navigation audio would play and you could hear Viper "cut-out", then re-enable when Spotify starts playing again. The AML module fixed this for me, but only after disabling Attach audio effects.

Added Bonus. If you're into Substratum themes, Outline / Ethereal theme the updated UI of this Viper app.
 
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gl4cier

New member
May 8, 2019
1
0
Can't get it to work on MI a2, android 9: Enabled NO, Processing NO in driver settings when playing from any app to any device (bluetooth, speaker).
Already tried:
- disable MusicFX
- selinux permissive
- audio modification library from magisk
- audio compatibility patch from magisk
- all possible viper settings (channel\compatible)
- older viper version from magisk
All over for me?
 

zickler_malta

Senior Member
Nov 19, 2014
218
84
39
Naxxar
so you don't need the magisk module when running the apk found in the op? i have both installed and works flawlessly but if the module is unnecessary might as well delete it.
 

sjamie

Senior Member
Aug 6, 2011
8,486
4,267
so you don't need the magisk module when running the apk found in the op? i have both installed and works flawlessly but if the module is unnecessary might as well delete it.

When you install the apk found in the XDA app, it actually creates a Viper4Android 2.7.1.0 Magisk module. If the Viper module has any other version number next to it, it is an older version of Viper and should be deleted to avoid conflicts.
 
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Joe199799

Senior Member
Sep 7, 2014
826
282
Here's a setup that works for me with Google Maps Navigation audio while using Android Auto. Pixel 2 XL running Dirty Unicorns & Sultan kernel.
Install this Viper app, grant root access and let it install drivers. Reboot.
Open Viper, open Settings, enable "Compatibility mode". According to the release notes, this lets everything work in Car Mode (if I'm reading it correctly).
Install Audio Modification Library Magisk module. Reboot.
Open Viper. Mine asked me to install the drivers again, so I did. Reboot.
Profit

I tried this before with "Attach audio effects" enabled, but it was causing Viper to cut in-and-out depending on what app was playing audio. For example, it would process music through Spotify, but then a navigation audio would play and you could hear Viper "cut-out", then re-enable when Spotify starts playing again. The AML module fixed this for me, but only after disabling Attach audio effects.

Added Bonus. If you're into Substratum themes, Outline / Ethereal theme the updated UI of this Viper app.

I tried using ethereal to change the colors from Green to red and I just get an off lime color no matter what I pick
 

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  • 2
    Mod Edit: Quote removed since post deleted

    App is not broken, it's how Android 10/11 handles audio sessions and equalizer apps. Just because you don't understand it doesn't mean it's "defect".

    "Hack" is only fix for recent Magisk versions and "fallback" legacy mode works perfectly fine system wide even in Android 10/11.
    2
    After a couple of days, it just stops working and then I have to go to settings and disable and enable legacy mode and it starts working again until the next time.
    Same for me, each time the processing status is no and I have to toggle off and on the legacy mode to have it processing again.
    1
    What are the mods here doing???

    Delete this 2.7.2.* update please! Its the source of all problems here....why do the mods watch this since months and doing nothing?

    Unbelieveable in my opinion whats going on here....more than 20 pages just because noone is willing to remove a defect update...
    Well buddy, not everybody would agree with your opinion.
    1
    Is there just 1 person, where the latest update work as it should? And no, legacy mode is not - as written by others in earlier postings - "working", its just a fallback for problems.
    Yep, me (and many others who used the magiskpolicy fix). Viper works with or without legacy mode, but I don't hear the difference between standard and legacy mode anyway (tried on a couple of headphones, both modes sounds the same). I assume that the difference is in how the equalizer connects to the audio session, the audio processing itself is still the same.
    1
    Sorry, I checked wrong script. You are right that it turns SELinux back to enforcing so shouldn't be a big security risk. But in each case "mine" script is "allow only absolutely necessary selinux", "your" is "allow everything".

    Attach audio effects in your screenshot is basically Legacy mode. Why it's named differently on your and mine phone..no idea. I must keep legacy mode enabled for youtube vanced. Non legacy works only for Youtube music. But I have different phone and system - Mi 10T lite with MIUI 12.
    Again, selinux is switched to enforcing. Therefore, only the absolutely minimum changes to SELinux are running. It is NOT "absolutely everything".

    Been watching the convo, my viper is just like yours, not sure why the other one is named differently either, I was wondering if he installed viper fx, legacy, xhfi, myself.
    The following are the details from running AAPT on my device, against Viper:
    View attachment 5276647 (something is buggy with XDA)
    So it appears to be "FX". Hmmm... whats the difference with non-FX Viper? apart from legacy mode. I guess I should also read the change log to find out what is new/improved in the next version. But I have no issues, it always boots and processes, and never randomly turns itself off. So, I'm sitting on "don't fix it if it ain't broke". ;)

    Looks to me like you have previous Viper version installed, like 2.7.1.6. On latest it's "Legacy mode" in my case as well
    Well, in the screenshot above (not my install), the other version has both legacy and compatibility mode settings. But it appears I do not need legacy mode (or even compatibility mode), as my YouTube IS being processed by Viper; although I personally only really care about my music app.
  • 519
    ViPER4Android FX
    YF7EJvAcFH9ZuuytKO91DimKH-TQUvYOaA-gmdBrioXY-LSgtjoadLI17gtaGgIkR6KBXyVA4IXtcdjfLdQ=w2880-h1608

    By pittvandewitt and MrWhite214

    Introduction
    Many users are enhancing their smartphone audio experience with the popular ViPER4Android software, but some of us have a hard time installing the driver or they don't like the look of the app. As a solution for these troubles we have rewritten the 2.4.0.1 app source and added all 2.5.0.5 features to it. Many more features have been implemented too.
    With our huge success of ViPER4Android 2.6 we decided to completely rewrite the ViPER4Android app in Kotlin. This allowed us to squeeze out the remaining bugs and clean up the code even more. After a long time of waiting for you and developing for us, ViPER4Android 2.7 is finally here!
    There are many new features and improvements compared to 2.6, of which some can be found in the changelog. Hit the download button to check it out yourself!

    Downloads
    You can download the latest version on XDA Labs
    If you were pointed here for the installer by @Zackptg5, the link can be found here

    pittvandewitt's vdc service
    If you've always wanted to get the most neutral and arguably best sound coming from your headphones, make sure to join the VDC service to request a file!

    Donate
    You can donate to us via PayPal or buy our donation package from XDA Labs with extra features!
    Donate via PayPal
    Buy our donation package *coming soon*

    Dev Note
    If you want to include the app in your work, you're free to do so as long as you give proper credits

    Legal notice
    We are not associated with vipersaudio nor audlabs.
    Stating their Github readme we're free to use the driver as long as it's not used commercially.
    The driver parameters are obtained from the 2.4.0.1 source. The graphical EQ interface is inspired by the Cyanogenmod DSP application
    The app is still named ViPER4Android, because the driver isn't any different from what ViPER ACOUSTIC provides.
    Renaming it without changing anything would be considered kanging, which is not what is going on here.

    Credits
    ViPER ACOUSTIC for the driver
    Bappo for Swedish translation
    pittvandewitt for Dutch translation
    sazuke0703 for Thai translation
    R1DEN for Russian translation
    Hede for Danish translation
    gloeyisk for Indonesian translation
    LCS for Chinese simplified and traditional translations
    razor84 for Turkish translation

    Installation
    Download and install the APK from XDA Labs
    Follow the instructions when opening the app

    XDA:DevDB Information
    ViPERAndroid, App for the Apps & Games

    Contributors
    Team_DeWitt, pittvandewitt, Mr_White_214

    Version Information
    Status: Stable
    Current Stable Version: 2.7.2.1
    Stable Release Date: 2020-10-27

    Created 2018-04-09
    Last Updated 2020-10-27
    131
    Currently on the wishing list
    • Car mode / head unit detection
    • More translations. If you're interested, take a look over here to find the files. Fork the repo and make a pull request to get your translation merged in next release!
    • EMUI (Huawei) 8.0+ refuses to load the driver. Ask ViPER ACOUSTIC for a 64bit driver (Can't fix)
    • Updated driver that does not require selinux injections or the libstdc++ dependency workaround (Can't fix)

    Before reporting:
    Make sure you use the latest APK provided on XDA Labs
    Make sure any other audio mod is disabled/removed before installing the driver. We really cannot afford fixing every single device setup, especially when it's not related to the app


    If you would like to report a bug, pm @Team_DeWitt using the following format:
    [Describe the problem and your steps you take to reproduce it]
    [Phone brand and model]
    [OS (ROM) + Android version]
    [Root method (in case of magisk: core or full)]
    [Provide a link to your log file]
    115
    Changelog

    2.7.2.1
    • Improved loading logic for convolution files
    • Fixed an issue when installing the module on older Magisk versions
    • Bug fixes
    • Stability improvements


    2.7.2.0
    • Android 11 support
    • Automatically save/restore settings based on the device type/name
    • Add preset widget
    • Reworked presets
    • Performance improvements
    • Close service when no music playback is active if legacy mode is disabled
    • Add optional crashlytics to help improving future versions

    2.7.1.6
    • Support Magisk 20.3
    • Long press a feature to show description
    • Material theme update
    • Support scoped storage on Android 10+ (Preset dir is now /sdcard/Android/data/com.pittvandewitt.viperfx/files/Preset)

    2.7.1.0
    • Support Magisk 19
    • Add compatibility setting
    • Add ability to attach to sessions
    • Fix preset loading bug
    • Switch from setools to magiskpolicy
    • Important release notes: Link

    2.7.0.0
    • Full rewrite in Kotlin
    • New UI
    • Presets can be managed in the app itself
    • Effects can be set more precisely with seekbars
    • Min API 23
    • Uses 2.5.0.4 driver only
    • Audio routing bug fixed
    • Driver status bug fixed
    • Cross device effect changing bug fixed
    • App follows system dark/light mode (can be toggled with google messages e.g.)
    • Installation is faster and more versatile
    • Notification settings
    • Reduced APK size significantly

    2.6.0.5
    • Add app shortcuts (7.1+)
    • Minor interface redesign
    • Fix muffled sound
    • Fix options not applying
    • Fix profile conversion
    • Introduce vdc service
    • Improve performance
    • Update driver installation
    • Update chinese translations, thanks to KiSS

    2.6.0.4
    • Retain service after clearing recents
    • Emergency service.sh fix
    • Support Magisk core mode
    • Fix profile load loop
    • Recover speaker service
    • Fix convolver
    • Support Pixel devices
    • Use su.d if possible
    • Force global effect mode
    • Add Korean translation by @nebulac

    2.6.0.3
    • Fix /system install and uninstall.
    • Add temporary workaround for the convolver
    • Updated strings

    2.6.0.2
    • Fix FC while installing the driver
    • Add root check before installing the driver
    • Removed lucky patcher check
    • Capitalized driver status outputs
    • Updated strings

    2.6.0.1
    • Fix profile loading
    • Fix assets bug
    2.6.0.0
    • Initial Release
    101
    2.7.1.0 released

    Yay it's finally time to release an update

    And with this release come a few important release notes:
    Support for Magisk prior to v19 is dropped.
    If you did not use magisk, you need to reflash your /system partition and reinstall the driver
    An audio attach setting is added too to improve compatibility and it needs some explanation:
    For every time you play a song, the audio player should send information about what session the audio is played on, so equalizer apps can attach to that session.
    Session 0 is the default but deprecated session. Most of the time V4A processes just fine at session 0, but if it doesn't you can enable this switch and Viper will attach to other sessions. Note that if you don't have any session open, the driver status will say abnormal, which makes sense.
    There is the need for a switch, because in a lot of cases audio players do NOT send the information when a session is closed. So they keep the driver occupied and this mutes all other audio streams, including session 0 which is the fallback session.
    To make this problem a bit less bad, I excluded session 0. But when you still run into this problem, the solution is not to kill viper but to kill the audio app that was playing music previously.
    Bad design, I know. But it's not my fault. You should contact the developer of the music app to fix their crappy code and send a broadcast when audio playback stops/pauses.
    This switch makes ACP obsolete.

    Other things that have improved:
    I've seen multiple issues with android pie where the viper library wasn't detected any longer because a dependency is removed since the update. A workaround is shipped in the new release.
    The compatibility mode switch has been added back. This seems to be mandatory for car mode and some android q builds.
    An issue when loading presets has been resolved

    Download can be found on labs as always: Link
    89
    Answers to some related questions

    Help, the driver status says no
    • In case of Enabled: no; Please flip the Master limiter switch and go sit in a corner for a while
    • In case of Processing: no; If you use an application that uses audio sessions, enable session attaching in the settings. If that does not work, the audio is routed over session 0. You might want to try Audio Compatibility Patch from the Magisk repository in this case.

    What happened to the profiles?
    • They're now called presets. They are reworked to use independently per device, a feature that was very welcome. Because of many technical changes and improvements on how the preset is stored and loaded, they are not compatible with older versions than 2.7. You will have to recreate them by hand unfortunately. You can access the menu by pressing the selected device in case you missed the huge showcase when you first launched the app after installing the driver

    Why does your Magisk module not work?
    • Probably because you installed some other mod that also has an audio_effects file in it. Whatever module gets loaded last will become active
      The easiest way to bypass this is to let the app build a module after you installed all your favorite audio mods, and delete all files containing audio_effects in the other modules
      AudModLib will not come in handy this time, because the app doesn't flash a zip that AML can intercept

    Where can I find the source code?
    • You can't. And there is an obvious reason for that: This app is more sensitive to kangers who start selling this app, likely after adding their bullsh*t to it, rather than to people who actually want to help improve the app. Something like that already happened in the past to other audio software here on xda. Not really something we want to see happen again

    Where did the Selinux switch go?
    • What..? Are you really that careless security wise?
      The app handles this in a much more sophisticated way now. It injects only the absolute necessary rules to allow V4A to process, fully automatically

    Help, why do I still experience service drops?
    • Probably because doze is kicking in because Android doesn't like long running services. The service has been implemented the way the docs suggest. You can try excluding it from doze. Alternatively you can check out dontkillmyapp.com for tips

    Do you have a zip file for me?
    • No. There is no point in providing a zip file anymore. The driver installation is written from scratch and actually works now

    How do I uninstall the driver?
    • Use Magisk Manager to delete the module. If you use another root solution, you can dirty flash your rom or just leave it there
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