detector_utils.ts

/**
 * @license
 * Copyright 2021 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */

import {DEFAULT_FACE_MESH_ESTIMATION_CONFIG, DEFAULT_FACE_MESH_MODEL_CONFIG} from './constants';
import {MediaPipeFaceMeshMediaPipeEstimationConfig, MediaPipeFaceMeshMediaPipeModelConfig} from './types';

export function validateModelConfig(
    modelConfig: MediaPipeFaceMeshMediaPipeModelConfig):
    MediaPipeFaceMeshMediaPipeModelConfig {
  if (modelConfig == null) {
    return {...DEFAULT_FACE_MESH_MODEL_CONFIG};
  }

  const config: MediaPipeFaceMeshMediaPipeModelConfig = {...modelConfig};

  config.runtime = 'mediapipe';

  if (config.maxFaces == null) {
    config.maxFaces = DEFAULT_FACE_MESH_MODEL_CONFIG.maxFaces;
  }

  if (config.refineLandmarks == null) {
    config.refineLandmarks = DEFAULT_FACE_MESH_MODEL_CONFIG.refineLandmarks;
  }

  return config;
}

export function validateEstimationConfig(
    estimationConfig: MediaPipeFaceMeshMediaPipeEstimationConfig):
    MediaPipeFaceMeshMediaPipeEstimationConfig {
  if (estimationConfig == null) {
    return {...DEFAULT_FACE_MESH_ESTIMATION_CONFIG};
  }

  const config = {...estimationConfig};

  if (config.flipHorizontal == null) {
    config.flipHorizontal = DEFAULT_FACE_MESH_ESTIMATION_CONFIG.flipHorizontal;
  }

  if (config.staticImageMode == null) {
    config.staticImageMode =
        DEFAULT_FACE_MESH_ESTIMATION_CONFIG.staticImageMode;
  }

  return config;
}