34 lines
1.3 KiB
TypeScript
34 lines
1.3 KiB
TypeScript
// Copyright (c) Microsoft Corporation. All rights reserved.
|
|
// Licensed under the MIT License.
|
|
|
|
/* eslint-disable import/no-internal-modules */
|
|
import {Backend, InferenceSession, SessionHandler} from 'onnxruntime-common';
|
|
|
|
import {Session} from './onnxjs/session';
|
|
import {OnnxjsSessionHandler} from './onnxjs/session-handler';
|
|
|
|
class OnnxjsBackend implements Backend {
|
|
// eslint-disable-next-line @typescript-eslint/no-empty-function
|
|
async init(): Promise<void> {}
|
|
|
|
async createSessionHandler(pathOrBuffer: string|Uint8Array, options?: InferenceSession.SessionOptions):
|
|
Promise<SessionHandler> {
|
|
// NOTE: Session.Config(from onnx.js) is not compatible with InferenceSession.SessionOptions(from
|
|
// onnxruntime-common).
|
|
// In future we should remove Session.Config and use InferenceSession.SessionOptions.
|
|
// Currently we allow this to happen to make test runner work.
|
|
const session = new Session(options as unknown as Session.Config);
|
|
|
|
// typescript cannot merge method override correctly (so far in 4.2.3). need if-else to call the method.
|
|
if (typeof pathOrBuffer === 'string') {
|
|
await session.loadModel(pathOrBuffer);
|
|
} else {
|
|
await session.loadModel(pathOrBuffer);
|
|
}
|
|
|
|
return new OnnxjsSessionHandler(session);
|
|
}
|
|
}
|
|
|
|
export const onnxjsBackend = new OnnxjsBackend();
|