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[Mastiff]

I hope this is the correct forum, I'm guessing that those who could help me will be here! I have some old LUA code from the Girder website, made for Media Center 11. But obviously there has been a change somewhere along the way until the later versions, because it doesn't work. I'm pretty lousy at coding (well, to paraphrase Black Adder: I couldn't code myself out of a brown paper bag...  ), so I can't really make heads or tails of this. Here's the code, which is meant to help me find out if a zone is playing or not:

Code: [Select]

local MC = false

local function GetJRMCObject()
    local o = luacom.GetObject ("MediaJukebox Application")
table.print (o)
    if o == nil then o = luacom.CreateObject ("MediaJukebox Application") end
    if o == nil then print ("Bummer!!") return false end
    return o
end

local function GetZonedPlayback(iZone)
assert(MC, 'No MC Object')
iZone = iZone or 0
local Zones = MC:GetZones()
--table.print(Zones)
local Zone = Zones:GetZone(iZone)
local Playback = Zone:GetPlayback()
assert(Playback, 'No Playback Object')
return Playback
end

local function Terminate ()
MC = nil
collectgarbage()
end

MC = GetJRMCObject()
local state = GetZonedPlayback(0)
print (state:State())
Terminate()
I can tell that it's managing to create the object, but it can't get the zones. Something tells me that it's MC:GetZones() that doesn't work since it doesn't seem to come up with a table (a table is created, but it's empty). But that can be totally wrong, of course. I tried to look at the automation stuff in the Wiki, but didn't really understand much, I'm afraid. As much as I like to call myself a power user I am far from a developer!  So could anybody please take pity in me?

[Mastiff]

No pity for the hopeless?

[JimH]

I can't help, but the COM interface isn't much used now.  MCWS (on the DevZone) is.

[Mastiff]

Thanks, Jim! The web service, I see. Can I query that directly for playback state, or do I have to download a full XML format with all zones and states and info and then search in the XML to find the correct info?

[JimH]

I can't help with how to use it.  Sorry.  You can get a list of the commands by asking it.  It's self documenting. 

[Mastiff]

Yeah, I saw, thanks. I'll try that out.

[Mastiff]

And finally my head actually was good for something!   I rarely manage to code, but this time I was actually able. Yeah, it's simple. Yeah, it's embarassing that I can't code better after all these years, but right now I'm very proud of myself!   Note that I have 80 as the port, so I don't use port in this small pice of LUA code.

Code: [Select]

Playstate = string.sub(socket.http.request("http://192.168.0.15/MCWS/v1/Playback/Info?Zone=0"), 166,166)
print (Playstate)
Edit: I had to mess up a bit, or it wouldn't have been me.  This of course doesn't take into account the different zone names. To avoid the length of zone names messing up, I can do it like this:

Code: [Select]

local i = string.find(socket.http.request("http://192.168.0.15/MCWS/v1/Playback/Info?Zone=0"), 'State">')
print (i)
Playstate = string.sub(Page, i+7, i+7)
print (Playstate)

[Matt]

And finally my head actually was good for something!  I rarely manage to code, but this time I was actually able. Yeah, it's simple. Yeah, it's embarassing that I can't code better after all these years, but right now I'm very proud of myself!  Note that I have 80 as the port, so I don't use port in this small pice of LUA code.

Code: [Select]

Playstate = string.sub(socket.http.request("http://192.168.0.15/MCWS/v1/Playback/Info?Zone=0"), 166,166)
print (Playstate)

Just a little note that you probably don't want to assume the playstate is 166 characters in.  It'd be much better to search the string for the play state marker and read there.

[Mastiff]

Wow, synchronized posting, Matt! Just like synchronized swimming, except for the lack of bathing suits. Well, I don't wear one. I don't know about you!

To be more precise you posted while I was editing my post. Anyway thanks a lot, that ide was very correct!

[Mastiff]

I hit a snag. A big one. I thought there was something wrong with my code, because I didn't get any info except for "<Response Status="OK"/>". Turned out that there wasn't. But I think that either I misread the documentation, or there is something wrong, because for any zone but 0 this will only give you "<Response Status="OK"/>" as the answer:

Code: [Select]

http://192.168.0.15/MCWS/v1/Playback/Info?Zone=1
What do I need to put in to get it to work on other zones? I tried the part with the ZoneType, but this code doesn't work either:

Code: [Select]

http://192.168.0.15/MCWS/v1/Playback/Info?Zone=1&ZoneType=ID
In Girder I see this response:

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<Response Status="OK"/>

Which is basically the same.

I feel I'm about one step away from the solution, but it keeps moving away each time I take another step!

[Matt]

You need to call http://localhost:52199/MCWS/v1/Playback/Zones to get the list of zones.

Then plug each ID returned into the call:
http://localhost:52199/MCWS/v1/Playback/Info?Zone=[enter zone number here]

[Mastiff]

Thanks, Matt! I see that I get output from 0, then 10000 and up to 10007, and then 10021-10023. Do these change at any time (except for the very rare occasions where I add or delete zones), or are they set in stone? If they are I can do a translate table for that. Or is there a logic in this that I can use?

[Mastiff]

Never mind, I managed to get together (with a little help...) code that first checked the zone ID, no matter how many digits, and then sendt the check to that zone.