import type { QualityLevel, DeliveryDrm } from '@vizor-vr/shared';
/** Adapter type identifier */
export type AdapterType = 'progressive' | 'hls' | 'dash';
/** DRM playback context threaded from the element to the adapter. */
export interface DrmContext {
    config: DeliveryDrm;
    /** api-key attached to license requests so the Vizor proxy can entitle them. */
    apiKey?: string;
}
/**
 * Common interface for all streaming adapters.
 * Each adapter wraps a specific playback technology
 * (progressive MP4, hls.js, dashjs) behind a uniform API.
 */
export interface IStreamingAdapter {
    /** Attach the adapter to a <video> element */
    attach(videoElement: HTMLVideoElement): void;
    /** Load a source URL (optionally with a DRM context for EME). */
    load(url: string, drm?: DrmContext): void;
    /** Get available quality levels (empty for progressive) */
    getQualityLevels(): QualityLevel[];
    /** Set active quality level (-1 for auto ABR) */
    setQualityLevel(index: number): void;
    /** Whether this adapter supports ABR */
    readonly supportsABR: boolean;
    /** Whether the adapter is currently attached */
    readonly isAttached: boolean;
    /** Destroy the adapter and release resources */
    destroy(): void;
}
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