invalid bitdepth when sending raw PCMA/PCMU stream (Expose Playback API with Bit Depth change)

[bits0rcerer]

Inside my diago.Serve, I:

• accept a call
• create a PlaybackControl
• read the negotiated codec via pb.Codec()
• start ffmpeg (ffmpeg -loglevel error -i ./audio.webm -ac 1 -acodec pcm_alaw -ar 8000 -f alaw pipe:)
• send the ffmpeg output with pb.Play(r, "")

PCMA/PCMU streams have a bitdepth of 8. But pb.Play(r, "") interprets them as if they had a bitdepth of 16 because pb.BitDepth is set to 16 per default. When I set pb.BitDepth manually to 8 everything works as expected.
But since pb.BitDepth is commented as Read Only I am confused if this is the correct approach here or a bug.

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Besides that small hiccup I really enjoy working with diago. Thank you for your awesome work!

[emiago]

Hi @bits0rcerer . Yeah it is a bit confusing, but it is expected to be 16 bit all playouts.
It is hack right now, and it is fine, but I think this just (no mime type) streaming would need then different API or set of APIs.
Unfortunately, I integrated with rest for use case 16 bit streaming.

Lib only supports 16bit for encoding, that is reason why I wanted this to be read only.

I would note this as a feature