patterns: Added Ogg pattern

patterns/ogg.hexpat

@@ -0,0 +1,29 @@
+#pragma MIME audio/ogg
+
+#include <std/core.pat>
+#include <std/mem.pat>
+
+bitfield HeaderType {
+	Continuation	: 1;
+	BeginOfStream	: 1;
+	EndOfStream		: 1;
+};
+
+struct SegmentData {
+	u8 data[parent.segmentTable[std::core::array_index()]];
+};
+
+struct Ogg {
+	char capturePattern[4];
+	u8 version;
+	HeaderType headerType;
+	u64 granulePosition;
+	u32 bitstreamSerialNumber;
+	u32 pageSequenceNumber;
+	u32 checksum;
+	u8 pageSegments;
+	u8 segmentTable[pageSegments];
+	SegmentData data[pageSegments];
+};
+
+Ogg ogg[while(!std::mem::eof())] @ 0x00;