mp4box/src/parsing/sidx.js

JavaScript version of GPAC's MP4Box tool

BoxParser.createFullBoxCtor("sidx", "CompressedSegmentIndexBox", function(stream) {
	this.reference_ID = stream.readUint32();
	this.timescale = stream.readUint32();
	if (this.version === 0) {
		this.earliest_presentation_time = stream.readUint32();
		this.first_offset = stream.readUint32();
	} else {
		this.earliest_presentation_time = stream.readUint64();
		this.first_offset = stream.readUint64();
	}
	stream.readUint16();
	this.references = [];
	var count = stream.readUint16();
	for (var i = 0; i < count; i++) {
		var ref = {};
		this.references.push(ref);
		var tmp_32 = stream.readUint32();
		ref.reference_type = (tmp_32 >> 31) & 0x1;
		ref.referenced_size = tmp_32 & 0x7FFFFFFF;
		ref.subsegment_duration = stream.readUint32();
		tmp_32 = stream.readUint32();
		ref.starts_with_SAP = (tmp_32 >> 31) & 0x1;
		ref.SAP_type = (tmp_32 >> 28) & 0x7;
		ref.SAP_delta_time = tmp_32 & 0xFFFFFFF;
	}
});