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//! \file ArcSDT.cs
//! \date 2018 Aug 07
//! \brief Uma audio archive.
//
// Copyright (C) 2018 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;
using GameRes.Compression;
namespace GameRes.Formats.Uma
{
internal class SdtEntry : PackedEntry
{
public uint HeaderSize;
}
[Export(typeof(ArchiveFormat))]
public class SdtOpener : ArchiveFormat
{
public override string Tag { get { return "SDT/UMA"; } }
public override string Description { get { return "Uma audio archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public override ArcFile TryOpen (ArcView file)
{
if (!file.Name.HasExtension (".sdt"))
return null;
int signature = file.View.ReadInt32 (0);
if (signature != 0 && signature != 1)
return null;
using (var input = file.CreateStream())
{
var dir = new List<Entry>();
while (input.PeekByte() != -1)
{
int is_packed = input.ReadInt32();
if (is_packed != 0 && is_packed != 1)
return null;
uint size = input.ReadUInt32();
var name = input.ReadCString();
if (string.IsNullOrWhiteSpace (name))
return null;
var entry = FormatCatalog.Instance.Create<SdtEntry> (name);
entry.HeaderSize = input.ReadUInt32();
entry.Size = entry.HeaderSize + size;
entry.UnpackedSize = size;
entry.Offset = input.Position;
entry.IsPacked = is_packed != 0;
if (!entry.CheckPlacement (file.MaxOffset))
return null;
entry.ChangeType (AudioFormat.Wav);
dir.Add (entry);
input.Seek (entry.Size, SeekOrigin.Current);
}
return new ArcFile (file, this, dir);
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var snd_ent = (SdtEntry)entry;
var header = arc.File.View.ReadBytes (entry.Offset, snd_ent.HeaderSize);
using (var mem = new MemoryStream ((int)snd_ent.HeaderSize + 0x18))
using (var fmt = new BinaryWriter (mem))
{
uint total_size = snd_ent.Size + 0x18;
fmt.Write (AudioFormat.Wav.Signature);
fmt.Write (total_size);
fmt.Write (0x45564157); // 'WAVE'
fmt.Write (0x20746d66); // 'fmt '
fmt.Write (header.Length);
fmt.Write (header, 0, header.Length);
fmt.Write (0x61746164); // 'data'
fmt.Write (snd_ent.UnpackedSize);
fmt.Flush();
header = mem.ToArray();
}
Stream input = arc.File.CreateStream (entry.Offset+snd_ent.HeaderSize, snd_ent.UnpackedSize);
if (snd_ent.IsPacked)
input = new LzssStream (input);
return new PrefixStream (header, input);
}
}
}