Or how to check what my current headset is using?
I remember I had previously a patched pulseaudio that exposed appropriate settings, but later it got "merged into mainstream" - and I couldn't find the settings or information what is being used.
bluez_monitor.properties = {
["bluez5.enable-msbc"] = true,
["bluez5.enable-sbc-xq"] = true,
["bluez5.enable-hw-volume"] = true,
["bluez5.headset-roles"] = "[ hsp_hs hsp_ag hfp_hf hfp_ag ]",
["bluez5.codecs"] = "[ sbc sbc_xq aac ldac aptx aptx_hd aptx_II aptx_II_duplex faststream faststream_duplex ]",
}
I have a pair of Oneplus buds (the older ones, with a wire in between them) so I don't get any of the newer codecs, but SBC-XQ works well for reducing latency in a pinch.
Pulseaudio also has support, but I don't know how to make that work. My last attempt led me to switch to Pipewire.
`pactl list` should show you all your input and output sinks and what profiles they are using. Even though, I think the pulseaudio Volume Control app also shows this graphically.
Something like `pactl set-card-profile bluez_card.98_52_3D_7E_5D_DE a2dp-sink-sbc_xq` sets the profile to sbc xq. This is a bit old and I am not sure if newer versions of pipewire have better ways of doing it.
pw-dump | jq -r '.[] | select(.type == "PipeWire:Interface:Device" and .info.props."device.bus" == "bluetooth") | .info.params.Props, .info.params.PropInfo'