Audio breaks after fast, repeated attempts to replay sound using AudioTrack (in static mode) [36908335]

Obsolete

Bug

[AOSP] assigned

Status Update

No update yet.

Description

pi...@gmail.com

created issue #1

Jul 7, 2009 05:35PM

Trying to replay an audio track when last playback did not finish yet, will
result in temporary or permanent (for activity's lifecycle) failure of
playback using AudioTrack and an infinite flood of error messages to log,
requiring device or emulator restart to make LogCat usable again.

I did reproduce it on both the emulator (SDK 1.5_r2) and my HTC Magic
(Firmware version 1.5, kernel version 2.6.27-00393-g6607056, build number
CRB43).

Steps to reproduce:
1. Create AudioTrack (STREAM_MUSIC, MODE_STATIC) for PCM data from any wav
file (example one attached)
2. start playback by calling AudioTrack.play()
3. try replaying the sound by calling the following sequence:
audioTrack.stop();
audioTrack.reloadStaticData();
audioTrack.setPlaybackHeadPosition(0);
audioTrack.play();
4. repeat step 3 very fast a few times
5. if nothing is wrong yet, then wait for a few seconds, and try step 3 again.

I tried with various sounds, including very short ones (0.125 second), same
result.

Expected results:
When replaying existing audio track, the current sound playback should
stop. After that it should start playing from the beginning.

Observed results:
The final result is that further playbacks fail, until activity is
restarted. Additionally, log is flooded with error message like this:
ERROR/AudioFlinger(554): TrackBase::getBuffer buffer out of range:
ERROR/AudioFlinger(554): start: 0x403c5008, end 0x403c5808 , mBuffer
0x40508000 mBufferEnd 0x4051d888
ERROR/AudioFlinger(554): server 0, serverBase 661500,
user 882000, userBase 882000, channels 1

This message is repeated infinitely until emulator or device is restarted.

There are few scenarios possible in reaching the error message:
1. sound playback seems to be queued, and after multiple tries to replay
the sound, you can hear it being played repeatedly for some time, until the
last replay finishes. Trying to replay it at this point result in the error
above. All further attempts to replay the audio track will fail.
2. same as above, only that the second or third attempt at replaying the
audio track succeed and the error message stops being added to the log
3. same as above, only that error message is still flooding the log
4. after 2 tries the playback fails and the log is flooded with error messages

deleted

Restricted

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Comments

fo...@gmail.com <fo...@gmail.com> #2Jul 23, 2009 09:32AM

sometimes when recording,play music,log:
W/AudioFlinger( 36): AudioRecordThread: buffer overflow
E/AudioFlinger( 36): TrackBase::getBuffer buffer out of range:
E/AudioFlinger( 36): start: 0xc412a5c4, end 0xe1492558 , mBuffer
0x40e14100 mBufferEnd 0x40e17bcc
E/AudioFlinger( 36): server -6619335, serverBase -24969673, user
-15794336, userBase -19595349, channels 177
E/AudioFlinger( 36): TrackBase::getBuffer buffer out of range:
E/AudioFlinger( 36): start: 0xc412a5c4, end 0xe1492558 , mBuffer
0x40e14100 mBufferEnd 0x40e17bcc
E/AudioFlinger( 36): server -6619335, serverBase -24969673, user
-15794336, userBase -19595349, channels 177
......

must kill mediaserver

go...@gmail.com <go...@gmail.com> #3Oct 14, 2010 12:15PM

I've got the same problem and error message in stream mode.
My steps are :
stop();
setPlaybackHeadPosition(0);
play();

Then the error messages flood appears.

et...@gmail.com <et...@gmail.com> #4Apr 18, 2011 04:35AM

I was able to identify the cause of this, in my application, to be related to resetting the loop point in the AudioTrack. The problem was intermittent and occurred only when the head position was outside of the new loop point position (e.g., new loop position = 15322, head position = 17645).

Comment (3) above comes close to the solution. One must also call reloadStaticData(). The incantation that worked for me:

mAudioTrack.stop();
mAudioTrack.reloadStaticData();
mAudioTrack.setPlaybackHeadPosition(0);
mAudioTrack.play();

and then the call to mAudioTrack.setLoopPoints();

da...@gmail.com <da...@gmail.com> #5Oct 23, 2011 12:20AM

a related issue appears to be present in OpenSL ES, (Not surprising since it appears to be a wrapper around the audiotrack code).

Regardless of what i'm doing in bufferqueue callbacks etc. it seems the following psuedocode will (very frequently) cause a hang on my Toshiba Thrive running Android 3.1:
PlayInterface->setPlayState(Stopped)
BufferQueue->Clear()
PlayInterface->setPlayState(Playing)

the logcat shows the following:
system/media/wilhelm/src/android/AudioPlayer_to_android.cpp:1087: object 0x864c8 was locked by 0x19fd88 at system/media/wilhelm/src/itf/IPlay.c:38

er...@gmail.com <er...@gmail.com> #6Oct 29, 2011 01:59PM

My AudioPlayBack is causing error after long run of 48 hours

getting something like this in Error Log :

E/AudioFlinger( 36): TrackBase::getBuffer buffer out of range:
E/AudioFlinger( 36): start: 0xc412a5c4, end 0xe1492558 , mBuffer
0x40e14100 mBufferEnd 0x40e17bcc
E/AudioFlinger( 36): server -6619335, serverBase -24969673, user
-15794336, userBase -19595349, channels 177
E/AudioFlinger( 36): TrackBase::getBuffer buffer out of range:
E/AudioFlinger( 36): start: 0xc412a5c4, end 0xe1492558 , mBuffer
0x40e14100 mBufferEnd 0x40e17bcc
E/AudioFlinger( 36): server -6619335, serverBase -24969673, user
-15794336, userBase -19595349, channels 177

Is someone can help me in solving this ..
I think its because of Shared Buffer overflow ..
Is someone can tell me the exact file to change the shared buffer size which is shared between media server and AudioFlinger

gk...@android.com <gk...@android.com> Apr 5, 2013 08:47PM

Assigned to gk...@android.com.

sa...@google.com <sa...@google.com> #7Jul 8, 2020 05:24PM

Status: Won't Fix (Obsolete)

Thank you for the feedback. We're closing this issue as Obsolete.
If it is still observed in the latest Android release, please open a new issue in

https://goo.gl/TbMiIO along with a reference to this issue.