GARbro-mirror/ArcFormats/Sas5/ArcWAR.cs

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2015-10-24 19:54:07 +08:00
//! \file ArcWAR.cs
//! \date Fri Oct 23 19:11:56 2015
//! \brief Sas5 engine audio archive.
//
// Copyright (C) 2015 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.Utility;
namespace GameRes.Formats.Sas5
{
internal class WarEntry : Entry
{
public int Format;
}
[Export(typeof(ArchiveFormat))]
public class WarOpener : ArchiveFormat
{
public override string Tag { get { return "WAR/SAS5"; } }
public override string Description { get { return "SAS5 engine audio archive"; } }
public override uint Signature { get { return 0x20726177; } } // 'war '
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
public WarOpener ()
{
Extensions = new string[] { "war" };
}
public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt32 (8);
if (!IsSaneCount (count))
return null;
uint entry_size = file.View.ReadUInt32 (12);
if (entry_size < 0x18)
return null;
var index = Sec5Opener.LookupIndex (file.Name);
string base_name = Path.GetFileNameWithoutExtension (file.Name);
Func<int, string> GetEntryName;
if (null == index)
GetEntryName = n => GetDefaultName (base_name, n);
else
GetEntryName = (n) => {
Entry entry;
if (index.TryGetValue (n, out entry))
return entry.Name;
return GetDefaultName (base_name, n);
};
uint index_offset = 0x10;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var entry = new WarEntry {
Name = GetEntryName (i),
Offset = file.View.ReadUInt32 (index_offset),
Size = file.View.ReadUInt32 (index_offset+4),
Format = file.View.ReadByte (index_offset+0x14),
};
if (!entry.CheckPlacement (file.MaxOffset))
return null;
if (0 == entry.Format)
{
entry.Name = Path.ChangeExtension (entry.Name, "wav");
entry.Type = "audio";
}
else if (2 == entry.Format)
{
entry.Name = Path.ChangeExtension (entry.Name, "ogg");
entry.Type = "audio";
}
dir.Add (entry);
index_offset += entry_size;
}
return new ArcFile (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var went = entry as WarEntry;
if (null == went || 0 != went.Format)
return arc.File.CreateStream (entry.Offset, entry.Size);
uint fmt_size = arc.File.View.ReadUInt32 (entry.Offset);
uint data_size = arc.File.View.ReadUInt32 (entry.Offset+4);
var wav_header = new byte[8+12+fmt_size+8];
uint total_size = (uint)wav_header.Length + data_size - 8;
arc.File.View.Read (entry.Offset+8, wav_header, 0x14, fmt_size);
using (var mem = new MemoryStream (wav_header))
using (var buffer = new BinaryWriter (mem))
{
buffer.Write (AudioFormat.Wav.Signature);
buffer.Write (total_size);
buffer.Write (0x45564157); // 'WAVE'
buffer.Write (0x20746d66); // 'fmt '
buffer.Write (fmt_size);
buffer.BaseStream.Seek (fmt_size, SeekOrigin.Current);
buffer.Write (0x61746164); // 'data'
buffer.Write (data_size);
}
var pcm_data = arc.File.CreateStream (entry.Offset+8+fmt_size, entry.Size-8-fmt_size);
return new PrefixStream (wav_header, pcm_data);
}
static string GetDefaultName (string base_name, int n)
{
return string.Format ("{0}#{1:D5}", base_name, n);
}
}
}