build(spf): build26 from 45504a2b

dist/dev/media/utils/track-selection.js

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+import { isResolvedTrack } from "../types/index.js";
+//#region src/media/utils/track-selection.ts
+/**
+* Map track type to selected track ID property key in state.
+*/
+const SelectedTrackIdKeyByType = {
+	video: "selectedVideoTrackId",
+	audio: "selectedAudioTrackId",
+	text: "selectedTextTrackId"
+};
+/**
+* Get selected track from state by type.
+* Returns properly typed track (partially or fully resolved) or undefined.
+* Type parameter T is inferred from the type argument.
+*
+* @example
+* const videoTrack = getSelectedTrack(state, 'video');
+* if (videoTrack && isResolvedTrack(videoTrack)) {
+*   // videoTrack is VideoTrack
+* }
+*/
+function getSelectedTrack(state, type) {
+	const { presentation } = state;
+	if (!presentation?.selectionSets) return void 0;
+	const trackId = state[SelectedTrackIdKeyByType[type]];
+	return presentation.selectionSets.find(({ type: selectionSetType }) => selectionSetType === type)?.switchingSets[0]?.tracks.find(({ id }) => id === trackId);
+}
+/**
+* Returns the duration of the first resolved selected track, preferring
+* video over audio. A track is "resolved" once its media playlist has been
+* parsed (per {@link isResolvedTrack}). Returns `undefined` if neither
+* selected track is resolved.
+*/
+function getResolvedSelectedTrackDuration(state) {
+	if (state.selectedVideoTrackId) {
+		const video = getSelectedTrack(state, "video");
+		if (video && isResolvedTrack(video)) return video.duration;
+	}
+	if (state.selectedAudioTrackId) {
+		const audio = getSelectedTrack(state, "audio");
+		if (audio && isResolvedTrack(audio)) return audio.duration;
+	}
+}
+//#endregion
+export { SelectedTrackIdKeyByType, getResolvedSelectedTrackDuration, getSelectedTrack };
+
+//# sourceMappingURL=track-selection.js.map