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katyo / oboe-rs

Rust bindings for Oboe high-performance audio IO Android library
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Calling get_frames_written results in SIGABRT 'Pure virtual function called!' #7

Closed endragor closed 4 years ago

endragor commented 4 years ago

Here is a trace example:

A/DEBUG: signal 6 (SIGABRT), code -1 (SI_QUEUE), fault addr --------
A/DEBUG: Abort message: 'Pure virtual function called!'
<...>
A/DEBUG: backtrace:
A/DEBUG:       #00 pc 000000000006f06c  /apex/com.android.runtime/lib64/bionic/libc.so (abort+160) (BuildId: 95e03d8a9f101c0f1d3d9458688aa085)
A/DEBUG:       #01 pc 00000000000b155c  /data/app/rust.bevyios-3cTZXjf4DUdmqU6aym2Eiw==/lib/arm64/liboboe-ext.so (abort_message+236) (BuildId: da848013f2cb20dbcb4a9521aed0064c3f825c80)
A/DEBUG:       #02 pc 00000000000af424  /data/app/rust.bevyios-3cTZXjf4DUdmqU6aym2Eiw==/lib/arm64/liboboe-ext.so (__cxa_pure_virtual+16) (BuildId: da848013f2cb20dbcb4a9521aed0064c3f825c80)
A/DEBUG:       #03 pc 000000000005894c  /data/app/rust.bevyios-3cTZXjf4DUdmqU6aym2Eiw==/lib/arm64/liboboe-ext.so (oboe::AudioStream::getFramesWritten()+24) (BuildId: da848013f2cb20dbcb4a9521aed0064c3f825c80)
A/DEBUG:       #04 pc 000000000076012c  /data/app/rust.bevyios-3cTZXjf4DUdmqU6aym2Eiw==/lib/arm64/libbevyios.so (_$LT$T$u20$as$u20$oboe..audio_stream..AudioOutputStream$GT$::get_frames_written::hb9067d42620f3f7a+24)

I assume this happens because getFramesWritten/getFramesRead are not parts of the wrapper code, like getFramesPerBurst. As a side note, it would be nice to integrate getTimestamp along with fixing this issue, as it also requires dealing with the wrapper code.

katyo commented 4 years ago

Hmm... It seems, this method unsupported in that context. Can you give code sample?

endragor commented 4 years ago

I don't have a sample right now, but it occurred when invoking get_frames_written on the stream within data callback.

Interestingly, I'm having a similar problem with AAudio directly - trying to invoke AAudioStream_getTimestamp on a stream provided by AAudio in the callback results in Pure virtual function called! error. Although it should work according to the AAudio docs.

katyo commented 4 years ago

I double checked oboe's programming guide, it seems any stream.get*() methods is ok in that context.

endragor commented 4 years ago

It seems this was a problem in an application where I was testing these things. It called std::process::exit(0), which is not instantaneous on Android. That resulted in weird behavior, including this symptom.