this post was submitted on 05 Nov 2023
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Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io
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Ok, thanks for clarifying that - as I feared. I elaborated on my progress into finding a solution to this below, in case you have any interest in it or any thoughts that could help me along.
I have not yet found a solution I would be happy with because you always have to sacrifice on something. Your scrpcpy idea is neat and something I haven't though off but:
As it stands, I have given up on integrating mobile devices into my multiroom audio setup for many reasons. Right now I have my HTPC as the snapcast server and RPIs (soon to be old surface 4) as clients dotted around with a special script on the server-side to do some magic in regards to Kodi.
By chance I came across fcast which sounds interesting but relies heavily on adoption which you will not see in apps like youtube, youtube music, spotify etc. so (to me) it has no relevance.
It would be nice to have other people being able to use it, but it is not a top priority for me. Also battery drain is not that much of an issue as it will only be used while at home. The last point is a bit more concerning though, so I will see if I can test this out and see how well it works. And yes, the connection seems to be the biggest issue here. But it seems that once configured, it only requires running 'scrcpy' on the recieving end. And KDE Connect can be setup to run commands remotely, for example I just set it up to open VS Codium in a specific folder from my phone. I can't seem to add that command as a quick access tile (which would be my preferred option), but I could add it as a widget on my home screen for quick access so that conncetion is a button press away. How long the connection can stay for I don't know, but I will see if I can't test that out this week.
Did you check out balenaSound by the way? If so, what difficulties did you run into that made you discard it?
fcast looks nice, but if I understand it correctly it would require implementation in every specific application. I think if I were to jump onto the Grayjay-wagon, that could be nice, but I would love for my solution to be app agnostic.
As long as you are connected, I think network adb will stay active but if you leave your network f.e., you have to re-enable it in the developer options. But don't take my word for it. Feels like google changed this behaviour every major release with android.
On their blog they say: This project is made possible by the awesome work of various open source projects, including Shairport Sync for Airplay, Raspotify for Spotify Connect and Snapcast for multi-room audio sync. So they "just" glue existing stuff together which leaves you with roughly the same limitations as if you would do it yourself. It might allow spotify to be used with snapcast for multiroom but as I'm a yt music user I didn't digg any deeper.
Correct. That's what I meant with "adoption". Really hope it finds adoption but I really doubt it :(
Oh, if that is the case, this will not work. I'll test it out later this week to see.
Hmm, maybe I misunderstood it. Here is a blog post that shows how it can also use Bluetooth. To me, it sounds like that makes an app agnostic solution as long as you are fine with using Bluetooth. My understanding is that you then just connect to one of your speakers with Bluetooth when you want to cast, and you can then control which speakers the audio should play from. I will research this more. I should order a 3.5mm jack extension to the Pi Zero W, which is the only part I miss to be able to set up a proof-of-concept at home.