@svta/common-media-library/dist/drm/keysystem/getSupportedKeySystemConfiguration.js

A common library for media playback in JavaScript

const isTypeSupported = (typeof MediaKeys !== 'undefined' && typeof MediaKeys.isTypeSupported === 'function') ? MediaKeys.isTypeSupported : undefined;
/**
 * Filters and returns the supported key system configuration for a given system string.
 *
 * @param keySystem - Key system string such as 'com.widevine.alpha'
 * @param configs - An array of key system configurations.
 * @returns The first supported configuration or null if none are supported.
 *
 * @group DRM
 * @beta
 */
export function getSupportedKeySystemConfiguration(keySystem, configs) {
    if (!configs || typeof isTypeSupported === 'undefined') {
        return { supportedAudio: [], supportedVideo: [] };
    }
    for (const config of configs) {
        const audios = config.audioCapabilities || [];
        const videos = config.videoCapabilities || [];
        const supportedAudio = audios.filter(audio => { var _a; return isTypeSupported(keySystem, (_a = audio.contentType) !== null && _a !== void 0 ? _a : ''); });
        const supportedVideo = videos.filter(video => { var _a; return isTypeSupported(keySystem, (_a = video.contentType) !== null && _a !== void 0 ? _a : ''); });
        const hasAudio = supportedAudio.length > 0;
        const hasVideo = supportedVideo.length > 0;
        if (hasAudio || hasVideo) {
            return { supportedAudio, supportedVideo };
        }
    }
    return { supportedAudio: [], supportedVideo: [] };
}
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