camera: change API to support multiple cameras #352
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| /* | ||
| * Prepare the camera plugin (e.g. download the camera definition, etc). | ||
| */ | ||
| rpc Prepare(PrepareRequest) returns(PrepareResponse) {} |
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Why is this being removed? The idea was to be able to download the camera definition in advance, because it may be slow/timeout.
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My plan is to have it initialize automatically when it discovers a camera.
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Hmm... IIRC we've had issues in the past where is was being slow and either blocking stuff or producing a lot of timeouts. Then it was lazily initialized, but it caused issues because the very first call to a camera function was sometimes super slow (again, timeouts...).
Making it explicit has a few advantages:
- If you don't use the camera at all, you don't download the camera definition
- You can download the camera definition before you start using the camera (because usually you know in advance that you will use it)
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With C++ you would actually not even instantiate the plugin but I can see that for mavsdk_server it's a different story.
Beat added file caching for MAVSDK, so if we use that to cache the FTP file, it should be fairly quick actually.
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Your call 👍. I just wanted to mention why I added this function (in my experience the camera definition has always been the root of tons of camera problems)
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Right, I hear you. Let me try and see how it goes.
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This changes the API to support more than one camera within one camera plugin instance. This will enable multiple cameras in language wrappers instead of just C++ as it is now. We also rename the status to storage because that's what it really is.
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This changes the API to support more than one camera within one camera plugin instance.
This will enable multiple cameras in language wrappers instead of just C++ as it is now.