Video DefaultVideoDataProvider.ts

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  import type { DataProvider, LoadedData } from '../ViewportArchitectureTypes';
import { loadVideoStreamMetadata } from '../../../utilities/VideoUtilities';
import { getGenericViewportSourceDataId } from '../genericViewportDisplaySetAccess';
import type { VideoStreamPayload } from './VideoViewportTypes';
 
export class DefaultVideoDataProvider implements DataProvider {
  async load(dataId: string): Promise<LoadedData<VideoStreamPayload>> {
    const sourceDataId = getGenericViewportSourceDataId(dataId);
    const stream = loadVideoStreamMetadata(sourceDataId);
 
    return {
      id: dataId,
      type: 'video',
      renderedUrl: stream.renderedUrl,
      fps: stream.cineRate || 30,
      numberOfFrames: stream.numberOfFrames || 1,
      frameRange: [1, stream.numberOfFrames || 1],
      modality: stream.modality,
      metadata: stream.metadata,
    };
  }
}