obsproject / obsproject/obs-studio
Websocket returns invalid bounds with GetSceneItemTransform
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- Dominant language
- C
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Description
Operating System Info
Ubuntu 24.04
Other OS
No response
OBS Studio Version
Other
OBS Studio Version (Other)
32.0.2
OBS Studio Log URL
https://obsproject.com/logs/1mPntWVs75nTXZPZ
OBS Studio Crash Log URL
No response
Expected Behavior
I expected the return object from GetSceneItemTransform to be directly valid to use in SetSceneItemTransform.
Current Behavior
When using request GetSceneItemTransform on an item whose bounds have not been modified the websocket returns 0 for boundsHeight and boundsWidth.
{
"d": {
"requestId": "a",
"requestStatus": {
"code": 100,
"result": true
},
"requestType": "GetSceneItemTransform",
"responseData": {
"sceneItemTransform": {
"alignment": 5,
"boundsAlignment": 0,
"boundsHeight": 0,
"boundsType": "OBS_BOUNDS_NONE",
"boundsWidth": 0,
"cropBottom": 0,
"cropLeft": 0,
"cropRight": 0,
"cropToBounds": false,
"cropTop": 0,
"height": 50,
"positionX": 0,
"positionY": 1030,
"rotation": 0,
"scaleX": 1,
"scaleY": 1,
"sourceHeight": 50,
"sourceWidth": 50,
"width": 50
}
}
},
"op": 7
}
If you try to use the returned sceneItemTransform in a SetSceneItemTransform request the websocket returns
{
"d": {
"requestId": "a",
"requestStatus": {
"code": 402,
"comment": "The field value of `boundsWidth` is below the minimum of `1.000000`",
"result": false
},
"requestType": "SetSceneItemTransform"
},
"op": 7
}
Steps to Reproduce
- Create a new source. (I've only tested the colour and text sources)
- Use the GetSceneItemTransform request.
- Take the transform object from that request and make a SetSceneItemTransform request with it.
- OBS returns the error message
Anything else we should know?
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by tracing the GetSceneItemTransform and SetSceneItemTransform request handling in the OBS WebSocket API. Reproduce the round trip with a colour or text source using the provided transform data, then verify that the returned object can be accepted by SetSceneItemTransform without the bounds validation error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- api
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100