Repository navigation
Equalizer broken in v1.10.1 #3241
Description
Version
Media3 main branch
More version details
I have an equalizer feature, in my app, that has been working for the past 2 years.
After updating androidx.media3:media3-exoplayer and androidx.media3:media3-session to 1.10.1
def media3_version = '1.10.1'
api "androidx.media3:media3-exoplayer:$media3_version"
api "androidx.media3:media3-session:$media3_version"
equalizer.setBandLevel(band, level) either doesn't work or throws an exception.
I have tested on a Motorola Signature with Android 16, and it is broken, but it still works on an emulator with android 16.
I have reverted back to media3_version = '1.8.0' and it works fine on all my test devices.
Then I started incrementing the version to find which is the latest version that works and found that 1.10.0 is fine so the problem was introduced in 1.10.1
I create the equalizer with the same session Id with which I build the Exo Player.
I take the number of bands and the band range from the equalizer itself.
The first and second call to setBandLevel are not throwing an exception, but they also don't change the sound, the call seems to be a no-op. The next calls will throw this exception:
Failed to set the equalizer band 4 to level -22
java.lang.RuntimeException: AudioEffect: set/get parameter error at android.media.audiofx.AudioEffect.checkStatus(AudioEffect.java:1465) at android.media.audiofx.Equalizer.setBandLevel(Equalizer.java:222) at [...]EqualizerActivity$EqBandChangeListener.onProgressChanged(EqualizerActivity.java:228) at
Devices that reproduce the issue
Motorola Signature
Devices that do not reproduce the issue
Android Studio emulators
Reproducible in the demo app?
Yes
Reproduction steps
Create an equalizer attached to the same session used by an Exo Player, play a sound and try to call setBand on the equalizer (after or during the sound playback).
Expected result
Sound effect should be applied.
Actual result
Either setBand fails silently or throws the exception I pasted above.
Media
Any sound file.
Bug Report
- You will email the zip file produced by
adb bugreportto android-media-github@google.com after filing this issue.
Activity
microkatz commentedon Jun 5, 2026
@faltiska
Thank you for reporting your issue. There were bugfixes since the 1.8 release related to audio session id generation and usage.
Firstly, it would help if you would be able to send a bug report. Make sure to set up debug logs before reproducing the scenario and recording the traces, https://developer.android.com/media/media3/exoplayer/debug-logging. If you cannot send the report publicly, please send them to android-media-github@google.com with the subject
Issue #3241. Please also update this issue to indicate you've done this.Secondly, have you tried with additional devices? And what SDK levels? If its not working on the Motorola device but is on the emulators, Pixels etc then it could be a device specific issue. Perhaps there is some issue with that device with setting custom audio session ids. Maybe you need to wait until an audio session id is provided by the AudioTrack/Android Framework and then use that for the Equalizer as a workaround.
faltiska commentedon Jun 5, 2026
I probably added too much info to the bug.
The problem is not in 1.8.0, it is in 1.10.1.
microkatz commentedon Jun 8, 2026
@faltiska
It was well understood that you are seeing a regression after upgrading. I was just noting that there were code changes related to audio session id generation and usage after 1.8.0 but not sure what could be the culprit. Hence why I am asking for the additional materials from you.
Can you please provide the bug report as well as answer the questions asked?
faltiska commentedon Jun 8, 2026
I am sorry but I will not be able to reproduce the problem on a Motorola phone anymore so I will not be able to give you any additional info.
But the fact that it worked with 1.10.0 and it was broken in 1.10.1 may help you narrow it down.
microkatz commentedon Jun 9, 2026
@faltiska
Noted. Thank you for specifying the version.
It is most likely a symptom of the fix to the audioSessionId generation in 1.10.1 that has introduced a race condition. An interleaving of the updates to the Renderers via the Playback thread is causing the auto-generated value to be used rather than your session id.
I'm implementing a fix and will update this thread when it has been submitted.
In the meantime, you could just use the autogenerated audio session id provided by ExoPlayer for the Equalizer instead of creating your own. Or you can wait till its been created and then set your custom value via setAudioSessionId.
faltiska commentedon Jun 9, 2026
Thank you!!
Fix race condition with auto and manually-set audioSessionID processes
microkatz commentedon Jun 11, 2026
@faltiska
We have pushed a fix to the issue in the main branch in this commit: b8fee01.
Please let us know if that addresses the problem or if you have any additional questions.
microkatz commentedon Jun 16, 2026
I will now be resolving this ticket as hopefully the commit has addressed your issue!
Please re-open or create a new ticket if you have any additional questions or problems.