@svta/common-media-library/dist/iso/bmff/parsers/subs.js

A common library for media playback in JavaScript

/**
 * Parse a SubSampleInformationBox from an IsoView
 *
 * @param view - The IsoView to read data from
 *
 * @returns A parsed SubSampleInformationBox
 *
 * @group ISOBMFF
 *
 * @beta
 */
export function subs(view) {
    const { version, flags } = view.readFullBox();
    const entryCount = view.readUint(4);
    const entries = view.readEntries(entryCount, () => {
        const sampleDelta = view.readUint(4);
        const subsampleCount = view.readUint(2);
        const subsamples = view.readEntries(subsampleCount, () => ({
            subsampleSize: view.readUint((version === 1) ? 4 : 2),
            subsamplePriority: view.readUint(1),
            discardable: view.readUint(1),
            codecSpecificParameters: view.readUint(4),
        }));
        return {
            sampleDelta,
            subsampleCount,
            subsamples,
        };
    });
    return {
        version,
        flags,
        entryCount,
        entries,
    };
}
;
//# sourceMappingURL=subs.js.map