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implemented zlib-compressed XPCM audio.

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This commit is contained in:
morkt 2016-02-07 04:30:31 +04:00
parent 81e4637750
commit 9eeec45c0f
1 changed files with 25 additions and 15 deletions
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40
ArcFormats/Circus/AudioPCM.cs
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@ -2,7 +2,7 @@
//! \date Mon Jun 15 16:30:24 2015
//! \brief Circus PCM audio format.
//
// Copyright (C) 2015 by morkt
// Copyright (C) 2015-2016 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
@ -102,50 +102,60 @@ namespace GameRes.Formats.Circus
{
this.Source = new StreamRegion (file, file.Position, src_size);
}
else if (1 == mode)
else if (1 == mode || 3 == mode)
{
var decoder = new PcmDecoder (input, src_size, extra);
var decoder = new PcmDecoder (input, src_size, extra, (XpcmCompression)mode);
this.Source = new MemoryStream (decoder.Unpack(), 0, src_size);
file.Dispose();
}
else if (3 == mode)
{
uint packed_size = input.ReadUInt32();
this.Source = ZLibCompressor.DeCompress (file);
file.Dispose();
}
else
throw new NotSupportedException ("Not supported Circus PCM audio compression");
}
}
}
public enum XpcmCompression
{
None = 0,
Lzss = 1,
Zlib = 3,
}
internal class PcmDecoder
{
byte[] m_pcm_data;
byte[] m_encoded;
int m_pcm_size;
int m_packed_size;
int m_extra;
public byte[] Data { get { return m_pcm_data; } }
public PcmDecoder (BinaryReader input, int pcm_size, int extra)
public PcmDecoder (BinaryReader input, int pcm_size, int extra, XpcmCompression mode)
{
if (extra < 0 || extra > 3)
throw new InvalidFormatException();
m_packed_size = input.ReadInt32();
int packed_size = input.ReadInt32();
m_extra = extra;
m_pcm_size = pcm_size;
m_pcm_data = new byte[pcm_size + 8192];
m_encoded = new byte[(pcm_size / 0xFE0 << 12) + 16386];
if (m_packed_size != input.Read (m_pcm_data, 0, m_packed_size))
throw new InvalidFormatException ("Unexpected end of file");
if (XpcmCompression.Lzss == mode)
{
if (packed_size != input.Read (m_pcm_data, 0, packed_size))
throw new InvalidFormatException ("Unexpected end of file");
UnpackV1 (m_pcm_data, packed_size, m_encoded);
}
else if (XpcmCompression.Zlib == mode)
{
using (var z = new ZLibStream (input.BaseStream, CompressionMode.Decompress, true))
z.Read (m_encoded, 0, m_encoded.Length);
}
else
throw new InvalidFormatException ("Unknown PCM compression mode");
}
public byte[] Unpack ()
{
UnpackV1 (m_pcm_data, m_packed_size, m_encoded);
Buffer.BlockCopy (unk_43A254, m_extra*0x40, dword_43A214, 0, 0x40);
DecodeV1 (m_pcm_data, m_encoded, m_pcm_size);
return m_pcm_data;