[litertlm] Update LiteRT-LM Kotlin Backend API to a sealed class#1546
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[litertlm] Update LiteRT-LM Kotlin Backend API to a sealed class#1546copybara-service[bot] merged 1 commit intomainfrom
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This change refactors the `Backend` API in `Config.kt` from an enum
to a sealed class to support backend-specific configurations directly
within the backend definition.
**Key changes include:**
* **Backend Sealed Class:** `Backend` is now a sealed class with three
variants: `CPU(val numThreads: Int)`, `NPU()`,
and `GPU()`.
* **JNI Configuration:** Updated `LiteRtLmJni.nativeCreateEngine` and
`litertlm.cc` to accept and process the `num_threads` parameter, which
is mapped to `number_of_threads` in the C++ `CpuConfig`.
* **Tests & Examples Migration:** Updated all test cases (e.g.,
`SessionTest`, `DeviceTest`, `BaseDeviceTest`) and example scripts
(`Main.kt`, `ToolMain.kt`, `BenchmarkMain.kt`) to instantiate the new
`Backend.CPU()` and `Backend.NPU(...)` data classes.
LiteRT-LM-PiperOrigin-RevId: 879674985
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[litertlm] Update LiteRT-LM Kotlin Backend API to a sealed class
This change refactors the
BackendAPI inConfig.ktfrom an enumto a sealed class to support backend-specific configurations directly
within the backend definition.
Key changes include:
Backendis now a sealed class with threevariants:
CPU(val numThreads: Int),NPU(),and
GPU().LiteRtLmJni.nativeCreateEngineandlitertlm.ccto accept and process thenum_threadsparameter, whichis mapped to
number_of_threadsin the C++CpuConfig.SessionTest,DeviceTest,BaseDeviceTest) and example scripts(
Main.kt,ToolMain.kt,BenchmarkMain.kt) to instantiate the newBackend.CPU()andBackend.NPU(...)data classes.