updated legacy formats.

(BIZ): moved to Adviz folder.
(GIZ, GIZ2, BIZ2, PR1): new PC-98 image formats.
(DATA, BGM, SED): MyHarvest resource formats.
(HTF): compressed image format.
(PAK): Mina resource archives.
(GCmp): read palette from external resource.
(NCG): Nekotaro image format.
(BND, TCZ, TSZ): Ponytail Soft PC-98 formats.
(NOR): Sophia resource archive.
(SDA, PLA): Squadra D resource archives.
(UCA): added checks to avoid false positives.

Legacy/SquadraD/ArcPLA.cs

@@ -0,0 +1,114 @@
+//! \file       ArcPLA.cs
+//! \date       2023 Sep 26
+//! \brief      Squadra D audio archive.
+//
+// Copyright (C) 2023 by morkt
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+
+namespace GameRes.Formats.SquadraD
+{
+    internal class PlaEntry : PackedEntry
+    {
+        public  int Id;
+        public  int n1;
+        public uint SampleRate;
+        public  int Channels;
+        public byte n2;
+        public byte n3;
+        public int[] Data;
+    }
+
+    [Export(typeof(ArchiveFormat))]
+    public class PlaOpener : ArchiveFormat
+    {
+        public override string         Tag => "PLA";
+        public override string Description => "Squadra D audio archive";
+        public override uint     Signature => 0x2E616C50; // 'Pla.'
+        public override bool  IsHierarchic => false;
+        public override bool      CanWrite => false;
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            uint arc_size = file.View.ReadUInt32 (4);
+            if (arc_size != file.MaxOffset || file.View.ReadUInt32 (0x10) != 2)
+                return null;
+            uint check = (arc_size & 0xD5555555u) << 1 | arc_size & 0xAAAAAAAAu;
+            if (check != file.View.ReadUInt32 (8))
+                return null;
+            int count = file.View.ReadUInt16 (0xE);
+            if (!IsSaneCount (count))
+                return null;
+
+            var dir = new List<Entry> (count);
+            using (var index = file.CreateStream())
+            {
+                index.Position = 0x14;
+                for (int i = 0; i < count; ++i)
+                {
+                    var entry = new PlaEntry {
+                        Id = index.ReadInt32()
+                    };
+                    entry.Name = entry.Id.ToString ("D5");
+                    dir.Add (entry);
+                }
+                foreach (PlaEntry entry in dir)
+                {
+                    entry.n1 = index.ReadInt32();
+                    entry.SampleRate = index.ReadUInt32();
+                    entry.Channels = index.ReadInt32();
+                    entry.n2 = index.ReadUInt8();
+                    entry.n3 = index.ReadUInt8();
+                    index.ReadInt16();
+                }
+                foreach (PlaEntry entry in dir)
+                {
+                    entry.Offset = index.ReadUInt32();
+                }
+                foreach (PlaEntry entry in dir)
+                {
+                    int n = entry.Channels * 2;
+                    entry.Data = new int[n];
+                    for (int j = 0; j < n; ++j)
+                        entry.Data[j] = index.ReadInt32();
+                }
+            }
+            long last_offset = file.MaxOffset;
+            for (int i = dir.Count - 1; i >= 0; --i)
+            {
+                dir[i].Size = (uint)(last_offset - dir[i].Offset);
+                last_offset = dir[i].Offset;
+            }
+            return new ArcFile (file, this, dir);
+        }
+
+        /*
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            return base.OpenEntry (arc, entry);
+        }
+        */
+    }
+}