patterns: Added Miles Sound System Compressed Archive (MSSCMP) (#320)

* MSSCMP readme

* Add files via upload

patterns/msscmp.hexpat

@@ -0,0 +1,85 @@
+#pragma author DexrnZacAttack
+#pragma description MSSCMP (Miles Sound System Compressed Archive)
+#pragma magic [ 42 41 4E 4B ] @ 0x00
+#pragma magic [ 4B 4E 41 42 ] @ 0x00
+#pragma array_limit 4294967295
+#pragma pattern_limit 4294967295
+
+import type.magic;
+import std.core;
+#ifdef __IMHEX__
+    import hex.core;
+#endif
+
+struct FileDataEntry {
+    u32 nameOffset;
+    char name[] @ nameOffset;
+    u32 folderOffset;
+    char folder[] @ folderOffset;
+    le u32 fileDataOffset;
+    padding[8];
+    u32 sampleRate;
+    u32 fileSize;
+    u8 data[fileSize] @ fileDataOffset;
+    #ifdef __IMHEX__
+        hex::core::add_virtual_file(std::string::to_string(name) + ".binka", data);
+    #endif
+};
+
+struct Index2Entry {
+    u32 entryOffset;
+    u32 fStructureOffset;
+    FileDataEntry fileDataEntry @ entryOffset;
+};
+
+struct MsscmpEntry {
+    char name[12];
+    Index2Entry entries[parent.header.index2EntryCount] @ parent.header.index1LastEntryOffset + 4;
+};
+
+
+struct Header<T> {
+    padding[4]; // unk
+    T fileDataOffset;
+    padding[8]; // unk
+    T index1Offset;
+    T index1LastEntryOffset;
+    if (sizeof(T) == 4)
+        padding[8];
+    else
+        padding[16];
+
+    T unkOffset;
+    T index1EntryCount;
+
+    if (sizeof(T) == 4)
+        padding[8];
+    else
+        padding[4];
+
+    u32 index2EntryCount;
+};
+
+using OldGenHeader = Header<u32>;
+using NewGenHeader = Header<u64>;
+
+struct MSSCMP {
+    char magic[4];
+    if (magic == "BANK")
+        std::core::set_endian(std::mem::Endian::Big);
+    else if (magic == "KNAB")
+        std::core::set_endian(std::mem::Endian::Little);
+    else
+        std::error("Magic does not match BANK or KNAB");
+
+    u32 check1 @ 0x1c [[hidden]]; // use this to check if old gen or new gen
+    u32 check2 @ 0x20 [[hidden]];
+
+    if (check1 == check2)
+        OldGenHeader header;
+    else
+        NewGenHeader header;
+    MsscmpEntry entry;
+};
+
+MSSCMP msscmp @ 0x00;