I want to run a command from a script, like play mysound.mp3, and have the volume for such invocations be remembered by PulseAudio.
I do not want that volume to apply to every invocation of play that I make on my system, just these special ones.
In PulseAudio, you can set sound per-application (aka "sink input"). But How do I run play with a custom application/sink-input name, so it can be differentiated from other invocations?
I'm imagining something like play --appname foo mysound.mp3, but I haven't found an option in SoX to do that.
Right now, they all show up like this in pactl list sink-inpuits:
Sink Input #4023
Driver: protocol-native.c
Owner Module: 8
Client: 2943
Sink: 2
Sample Specification: s32le 2ch 44100Hz
Channel Map: front-left,front-right
Format: pcm, format.sample_format = "\"s32le\"" format.rate = "44100" format.channels = "2" format.channel_map = "\"fr
ont-left,front-right\""
Corked: no
Mute: no
Volume: front-left: 42325 / 65% / -11.39 dB, front-right: 42325 / 65% / -11.39 dB
balance 0.00
Buffer Latency: 130521 usec
Sink Latency: 100817 usec
Resample method: copy
Properties:
media.name = "playback"
application.name = "SoX"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "32"
application.process.id = "4707"
application.process.user = "myname"
application.process.host = "myhost"
application.process.binary = "sox"
application.language = "C"
window.x11.display = ":0.0"
application.process.machine_id = "fa117ee892c54109a928f2c38093b473"
application.process.session_id = "1"
module-stream-restore.id = "sink-input-by-application-name:SoX"
So I'm imagining being able to set the application.name field, or similar.
Anyone know how to do this?
It seems the answer is "no, you can't do that, currently".
From email on the sox-users list:
There is currently no way to set the name. It is hard-coded here: https://sourceforge.net/p/sox/code/ci/master/tree/src/pulseaudio.c#l65