iOS stopGeneration

[chenchat]

func stopGeneration(completion: @escaping (Result<Void, any Error>) -> Void) {
completion(.failure(PigeonError(
code: "stop_not_supported",
message: "Stop generation is not supported on iOS platform yet",
details: nil
)))
}

why??

[DenisovAV]

Hi @chenchat,

This is a MediaPipe iOS SDK limitation — the iOS LlmInference.Session API doesn't expose a cancel/stop method.

Current status by platform:

Platform	Stop Generation	API
Android (MediaPipe)	✅ Works	cancelGenerateResponseAsync()
Web (MediaPipe 0.10.26+)	✅ Works	cancelProcessing()
iOS (MediaPipe)	❌ Not available	SDK doesn't expose it
Android/Desktop (LiteRT-LM)	❌ Not available	SDK doesn't expose it

We've filed upstream feature requests to get this implemented:

• MediaPipe iOS: [iOS] Add cancel/stop generation API for LlmInference google-ai-edge/mediapipe#6252
• LiteRT-LM (all platforms): [Feature Request] Add cancel/stop generation API google-ai-edge/LiteRT-LM#1638

Related: #34, #19

[chenchat]

@DenisovAV ，
Thank you for the clarification. I have noted this and look forward to the upstream support for this feature at an early date.