No audio playback for P25 with 5/4/24 nightly build

[n2ygk]

sdrtrunk Version
master-branch

Describe the bug
Audio for p25 channels does not play for most if not all channels in master nightly build.

To Reproduce
Steps to reproduce the behavior:

1. Run sdr-trunk-osx-x86_64-vnightly/bin/sdrtrunk
2. See calls happening in p25 control channel events log
3. No audio heard.
4. Run sdr-trunk-osx-x86_64-v0.6.0/bin/sdrtrunk
5. See calls happening as above
6. audio heard consistently.

Expected behavior
Expected to hear audio.

Screenshots
If applicable, add screenshots to help explain your problem.
Audion working under v0.6.0:

Audio not working under vnightly:

Application Log
See vnightly sdrtrunk_app.log

Desktop (optional - complete the following information):

• OS: macOS Monterey 12.6.4
• model: MacBook Pro (Retina, 15-inch, Mid 2015)
• CPU Cores: 2.8 GHz Quad-Core Intel Core i7
• RAM: 16 GB
• dongle: RTL-SDR blog v4 RYL2832U/R828D

Additional context
Rarely I would hear audio from one of the P25 aliases in the nightly build but noticed most aliases were in the event log but were not playing audio.

I can share the config if needed.

[n2ygk]

I've also tested with v0.6.1-beta1 and that works OK. I'll try and bisect to find which commit in nightly is the cause.

[aka1ceman]

I just installed and have the same issue. User Preferences / Output tones and Test, and I have test sound. Other than that, I can not get any sound from this app. I tried all different frequencies including keying up my radio next to it on same frequency. It shows in waterfall, yet NO sound. Im on windows 11.

[rxes]

Same (for the newest nightly)

[DSheirer]

I just installed and have the same issue. User Preferences / Output tones and Test, and I have test sound. Other than that, I can not get any sound from this app. I tried all different frequencies including keying up my radio next to it on same frequency. It shows in waterfall, yet NO sound. Im on windows 11.

@aka1ceman and @rxes have you read the user manual and created a channel configuration?

[DSheirer]

@n2ygk I'm not sure what would be causing the issue you're seeing. Have you made any progress in troubleshooting?

[n2ygk]

@DSheirer sorry no. I got stalled trying to build the components locally. I'm not a Java maven.

[rxes]

Still no audio on the latest nightly. Attaching .bits and .wav , hopefully it helps

recordings.zip

[DSheirer]

I was able to recreate what I think is the same issue. Audio is playing fine and then all of the sudden it stops playing. The playback panel still shows the call identifiers and shows that the call is in progress, but no audio plays. Once it gets into this state it never recovers. If using stereo playback, both channels will eventually get to this state.

I isolated the issue to the source data line. When one call ends, the line is drained and closed. When the next call comes in and we attempt to pre-load audio to fill the line buffer, it fails to write any audio to the line. I've added a patch to trap this condition and stop/restart the audio line and this seems to be a good recovery.