Initial community commit

Src/nsmkv/Lacing.h

@@ -0,0 +1,19 @@
+#pragma once
+#include <bfc/platform/types.h>
+
+namespace nsmkv
+{
+
+	struct LacingState
+	{
+		uint16_t laces;
+		int64_t sizes[256]; // max 256 laces (stored as 8bit number and 1 added)
+		uint64_t positions[256];
+	};
+
+	namespace Lacing
+	{
+		bool GetState(uint8_t flags, const uint8_t *data, size_t data_len, LacingState *state);
+		bool GetFrame(uint16_t frame_number, const uint8_t *data, size_t data_len, const uint8_t **frame, size_t *frame_len, const LacingState *state);
+	}
+}