Changing audio settings via JSON-RPC

Changing audio settings via JSON-RPC - Printable Version

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+---- Thread: Changing audio settings via JSON-RPC (/showthread.php?tid=192491)

Changing audio settings via JSON-RPC - teeedubb - 2014-04-17

Hi all,

I read in this thread thats its possible to change audio outputs via json-rpc and I have been able to do so with the following command:

Code:
curl -v -H "Content-type: application/json" -X POST -d '{"jsonrpc":"2.0","method":"Settings.SetSettingValue", "params":{"setting":"audiooutput.audiodevice","value":"ALSA:hdmi:CARD=NVidia,DEV=1"},"id":1}' http://localhost:9191/jsonrpc

However, trying something similar with audiooutput.channels or audiooutput.passthrough (options I found here) I get errors and there is no change in xbmc.

Code:
$ curl -v -H "Content-type: application/json" -X POST -d '{"jsonrpc":"2.0","method":"Settings.SetSettingValue", "params":{"setting":"audiooutput.channels","value":"3"},"id":1}' http://localhost:9191/jsonrpc                           * Hostname was NOT found in DNS cache

*   Trying 127.0.0.1...

* Connected to localhost (127.0.0.1) port 9191 (#0)

> POST /jsonrpc HTTP/1.1

> User-Agent: curl/7.35.0

> Host: localhost:9191

> Accept: */*

> Content-type: application/json

> Content-Length: 117

>

* upload completely sent off: 117 out of 117 bytes

< HTTP/1.1 200 OK

< Content-Length: 76

< Content-Type: application/json

< Date: Thu, 17 Apr 2014 09:28:09 GMT

<

* Connection #0 to host localhost left intact

{"error":{"code":-32602,"message":"Invalid params."},"id":1,"jsonrpc":"2.0"}xbmc","method":"Settings.SetSettingValue", "params":{"setting":"audiooutput.channels","value":"3"},"id":1}' http://localhost:9191/jsonrpc                           * Hostname was NOT found in DNS cache

*   Trying 127.0.0.1...

* Connected to localhost (127.0.0.1) port 9191 (#0)

> POST /jsonrpc HTTP/1.1

> User-Agent: curl/7.35.0

> Host: localhost:9191

> Accept: */*

> Content-type: application/json

> Content-Length: 117

>

* upload completely sent off: 117 out of 117 bytes

< HTTP/1.1 200 OK

< Content-Length: 76

< Content-Type: application/json

< Date: Thu, 17 Apr 2014 09:32:01 GMT

<

* Connection #0 to host localhost left intact

{"error":{"code":-32602,"message":"Invalid params."},"id":1,"jsonrpc":"2.0"}

Debug log of this error. Ive tried a whole lot of variations with no success. So Im curious if its possible to change other audio settings via json-rpc, and if so, can anyone point me in the direction of the correct syntax to use?

Thanks in advance.

RE: Changing audio settings via JSON-RPC - Montellese - 2014-04-17

Well "audiooutput.channels" is an integer setting and "3" is not a valid integer value but a string value. So you need to provide the value as an integer. And audiooutput.passthrough is a boolean setting so you need to provide a boolean value (true/false).

RE: Changing audio settings via JSON-RPC - teeedubb - 2014-04-17

Any chance you can provide a working example? I tried various combinations, I tried using integers for channels and true/false for passthroigh but I didn't get anywhere, I'm not overly familiar with jsonrpc and the syntax's that are required.

Pretty pretty please Big Grin

RE: Changing audio settings via JSON-RPC - joethefox - 2014-04-17

the list of all settings with their id, types, default values, etc. etc.. -> http://pastebin.com/RVvBjrfp

enjoy!

P.S. some settings may vary and can depend from the platform where XBMC is running. The above comes from a linux box.

RE: Changing audio settings via JSON-RPC - teeedubb - 2014-04-18

Thanks for the link joethefox, that will make it easier to see what options can be changed. Unfortunately Im not getting anywhere with putting the json-rpc command together. Ive disabled json compact output, but I cant work out whats wrong.

Code:
$curl -v -H "Content-type: application/json" -X POST -d '{"jsonrpc":"2.0","method":"Settings.SetSettingValue", "params":{"setting":"audiooutput.passthrough","value":"true","type":"boolean"},"id":1}' http://localhost:9191/jsonrpc

* Hostname was NOT found in DNS cache

*   Trying 127.0.0.1...

* Connected to localhost (127.0.0.1) port 9191 (#0)

> POST /jsonrpc HTTP/1.1

> User-Agent: curl/7.35.0

> Host: localhost:9191

> Accept: */*

> Content-type: application/json

> Content-Length: 140

>

* upload completely sent off: 140 out of 140 bytes

< HTTP/1.1 200 OK

< Content-Length: 327

< Content-Type: application/json

< Date: Fri, 18 Apr 2014 11:20:45 GMT

<

{

        "error": {

                "code": -32602,

                "data": {

                        "message": "Too many parameters",

                        "method": "Settings.SetSettingValue",

                        "stack": {

                                "name": "value",

                                "type": [

                                        "string",

                                        "number",

                                        "integer",

                                        "boolean",

                                        "array"

                                ]

                        }

                },

                "message": "Invalid params."

        },

        "id": 1,

        "jsonrpc": "2.0"

}

* Connection #0 to host localhost left intact

Code:
$ curl -v -H "Content-type: application/json" -X POST -d '{"jsonrpc":"2.0","method":"Settings.SetSettingValue", "params":{"setting":"audiooutput.passthrough","value":"true"},"id":1}' http://localhost:9191/jsonrpc

* Hostname was NOT found in DNS cache

*   Trying 127.0.0.1...

* Connected to localhost (127.0.0.1) port 9191 (#0)

> POST /jsonrpc HTTP/1.1

> User-Agent: curl/7.35.0

> Host: localhost:9191

> Accept: */*

> Content-type: application/json

> Content-Length: 123

>

* upload completely sent off: 123 out of 123 bytes

< HTTP/1.1 200 OK

< Content-Length: 97

< Content-Type: application/json

< Date: Fri, 18 Apr 2014 11:20:52 GMT

<

{

        "error": {

                "code": -32602,

                "message": "Invalid params."

        },

        "id": 1,

        "jsonrpc": "2.0"

}

* Connection #0 to host localhost left intact

RE: Changing audio settings via JSON-RPC - Montellese - 2014-04-18

Please first take some time to learn the JSON notation.

Code:
"true"

is not a valid boolean value in JSON, it must be

Code:
true

The same applies to your previous example where you tried to use "3" instead just 3.

So you're request should be

Code:
{"jsonrpc":"2.0","method":"Settings.SetSettingValue", "params":{"setting":"audiooutput.passthrough","value":true},"id":1}

RE: Changing audio settings via JSON-RPC - teeedubb - 2014-04-18

DOH! I missed the lack of quotes on another request I was using as an example Confused

Thanks for your help Montellese, the commands now work Smile