Implement FLIC (#481)

* Implement FLIC

* Refactor/style

* Remove library_flic.h

* Exclude flic.cpp from naming

* Temporary workaround

* Fix type

* Fix bugs in FLC decoding, and cleanup

* Fix braces

* Match ClampLine

* Fix struct type

---------

Co-authored-by: Christian Semmler <mail@csemmler.com>

LEGO1/omni/include/flic.h

@@ -0,0 +1,54 @@
+#ifndef FLIC_H
+#define FLIC_H
+
+#include "decomp.h"
+
+#include <windows.h>
+
+enum FLI_CHUNK_TYPE {
+	FLI_CHUNK_COLOR256 = 4,  // 256-level color palette info
+	FLI_CHUNK_SS2 = 7,       // Word-oriented delta compression
+	FLI_CHUNK_COLOR64 = 11,  // 64-level color palette info
+	FLI_CHUNK_LC = 12,       // Byte-oriented delta compression
+	FLI_CHUNK_BLACK = 13,    // Entire frame is color index 0
+	FLI_CHUNK_BRUN = 15,     // Byte run length compression
+	FLI_CHUNK_COPY = 16,     // No compression
+	FLI_CHUNK_PSTAMP = 18,   // Postage stamp sized image
+	FLI_CHUNK_FRAME = 0xf1fa // Frame
+};
+
+#pragma pack(push, 1)
+// A basic FLIC header structure from the "EGI" documentation. Source: https://www.compuphase.com/flic.htm#FLICHEADER
+// This also goes over the FLIC structures: https://github.com/thinkbeforecoding/nomemalloc.handson/blob/master/flic.txt
+typedef struct {
+	DWORD size; /* Size of the chunk, including subchunks */ // 0x00
+	WORD type;                                               // 0x04
+} FLIC_CHUNK;
+
+typedef struct : FLIC_CHUNK {
+	WORD frames; /* Number of frames in first segment */ // 0x06
+	WORD width; /* FLIC width in pixels */               // 0x08
+	WORD height; /* FLIC height in pixels */             // 0x0a
+	WORD depth; /* Bits per pixel (usually 8) */         // 0x0c
+	WORD flags; /* Set to zero or to three */            // 0x0e
+	DWORD speed; /* Delay between frames */              // 0x10
+} FLIC_HEADER;
+#pragma pack(pop)
+
+typedef struct : FLIC_CHUNK {
+	WORD chunks; /* Number of subchunks */                 // 0x06
+	WORD delay; /* Delay in milliseconds */                // 0x08
+	WORD reserved; /* Always zero */                       // 0x0a
+	WORD width; /* Frame width override (if non-zero) */   // 0x0c
+	WORD height; /* Frame height override (if non-zero) */ // 0x0e
+} FLIC_FRAME;
+
+void DecodeFLCFrame(
+	LPBITMAPINFOHEADER p_bitmapHeader,
+	BYTE* p_pixelData,
+	FLIC_HEADER* p_flcHeader,
+	FLIC_FRAME* p_flcFrame,
+	BYTE* p_decodedColorMap
+);
+
+#endif // FLIC_H