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(PkwOpener): variation of Crowd audio resources archive.

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This commit is contained in:
morkt 2015-06-20 21:31:31 +04:00
parent d1ac47ad03
commit 1fad53c137
1 changed files with 101 additions and 2 deletions
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103
ArcFormats/ArcPCK.cs
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@ -82,6 +82,105 @@ namespace GameRes.Formats.Crowd
return new ArcFile (file, this, dir);
}
}
internal class PkwEntry : PackedEntry
{
public WaveFormat Format;
}
[Export(typeof(ArchiveFormat))]
public class PkwOpener : ArchiveFormat
{
public override string Tag { get { return "PKWV"; } }
public override string Description { get { return "Crowd engine audio archive"; } }
public override uint Signature { get { return 0x56574b50; } } // 'PKWV'
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
public PkwOpener ()
{
Extensions = new string[] { "PCK" };
}
const uint WaveHeaderSize = 8/*RIFF*/ + 12/*WAVEfmt*/ + 0x10/*fmt*/ + 8/*data*/;
public override ArcFile TryOpen (ArcView file)
{
int format_count = file.View.ReadUInt16 (4);
int count = file.View.ReadUInt16 (6);
if (0 == format_count || 0 == count)
return null;
uint index_offset = 8;
long base_offset = index_offset + format_count*0x14 + count*0x18;
if (base_offset >= file.MaxOffset)
return null;
var formats = new List<WaveFormat> (format_count);
for (int i = 0; i < format_count; ++i)
{
var format = new WaveFormat
{
FormatTag = file.View.ReadUInt16 (index_offset),
Channels = file.View.ReadUInt16 (index_offset+2),
SamplesPerSecond = file.View.ReadUInt32 (index_offset+4),
AverageBytesPerSecond = file.View.ReadUInt32 (index_offset+8),
BitsPerSample = file.View.ReadUInt16 (index_offset+12),
BlockAlign = file.View.ReadUInt16 (index_offset+14),
};
index_offset += 0x14;
formats.Add (format);
}
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
int fmt_index = file.View.ReadUInt16 (index_offset);
if (fmt_index > formats.Count)
return null;
string name = file.View.ReadString (index_offset+2, 0x0A);
var entry = new PkwEntry
{
Name = name + ".wav",
Type = "audio",
Offset = base_offset + file.View.ReadInt64 (index_offset+0x10),
Size = file.View.ReadUInt32 (index_offset+0x0C),
IsPacked = true,
Format = formats[fmt_index],
};
if (!entry.CheckPlacement (file.MaxOffset))
return null;
entry.UnpackedSize = entry.Size + WaveHeaderSize;
dir.Add (entry);
index_offset += 0x18;
}
return new ArcFile (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var went = entry as PkwEntry;
if (null == went)
return arc.File.CreateStream (entry.Offset, entry.Size);
var riff = new byte[0x2c];
using (var buf = new MemoryStream (riff))
using (var wav = new BinaryWriter (buf))
{
wav.Write (0x46464952); // 'RIFF'
uint total_size = went.UnpackedSize - 8;
wav.Write (total_size);
wav.Write (0x45564157); // 'WAVE'
wav.Write (0x20746d66); // 'fmt '
wav.Write (0x10);
wav.Write (went.Format.FormatTag);
wav.Write (went.Format.Channels);
wav.Write (went.Format.SamplesPerSecond);
wav.Write (went.Format.AverageBytesPerSecond);
wav.Write (went.Format.BlockAlign);
wav.Write (went.Format.BitsPerSample);
wav.Write (0x61746164); // 'data'
wav.Write (went.Size);
wav.Flush ();
var input = arc.File.CreateStream (entry.Offset, entry.Size);
return new PrefixStream (riff, input);
}
}
}
}