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implemented 'WAPE' audio format.

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morkt 2016-12-17 18:55:35 +04:00
parent 7b8b69e30e
commit 34012bcdd0
2 changed files with 165 additions and 0 deletions
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1
ArcFormats/ArcFormats.csproj
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@ -319,6 +319,7 @@
<Compile Include="TamaSoft\ImageBTN.cs" />
<Compile Include="TamaSoft\ImageSUR.cs" />
<Compile Include="Taskforce\ArcDAT.cs" />
<Compile Include="TechnoBrain\AudioWAPE.cs" />
<Compile Include="TechnoBrain\ImageIPH.cs" />
<Compile Include="DxLib\ArcDX.cs" />
<Compile Include="ArcMiris.cs" />

164
ArcFormats/TechnoBrain/AudioWAPE.cs Normal file
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@ -0,0 +1,164 @@
//! \file AudioWAPE.cs
//! \date Sat Dec 17 13:20:19 2016
//! \brief TechnoBrain's compressed audio format.
//
// Copyright (C) 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
// 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.ComponentModel.Composition;
using System.IO;
using GameRes.Utility;
namespace GameRes.Formats.TechnoBrain
{
[Export(typeof(AudioFormat))]
public class WapeAudio : AudioFormat
{
public override string Tag { get { return "WAPE"; } }
public override string Description { get { return "TechnoBrain's compressed audio"; } }
public override uint Signature { get { return 0; } } // 'RIFF'
public override bool CanWrite { get { return false; } }
public WapeAudio ()
{
Extensions = new string[] { "wav" };
}
public override SoundInput TryOpen (IBinaryStream file)
{
var header = file.ReadHeader (0x2C);
if (!header.AsciiEqual ("RIFF") || !header.AsciiEqual (8, "WAPEfmt ")
|| !header.AsciiEqual (0x24, "data"))
return null;
var reader = new WapeDecoder (file);
var pcm = reader.ConvertToPcm();
var format = new WaveFormat
{
FormatTag = header.ToUInt16 (0x14),
Channels = header.ToUInt16 (0x16),
SamplesPerSecond = header.ToUInt32 (0x18),
AverageBytesPerSecond = header.ToUInt32 (0x1C),
BlockAlign = header.ToUInt16 (0x20),
BitsPerSample = header.ToUInt16 (0x22),
};
file.Dispose();
return new RawPcmInput (pcm, format);
}
}
internal sealed class WapeDecoder
{
IBinaryStream m_input;
int m_cur_bit;
byte m_cur_byte;
public WapeDecoder (IBinaryStream input)
{
m_input = input;
}
public Stream ConvertToPcm ()
{
m_input.Position = 0x2C;
m_cur_bit = 0;
int pcm_size = m_input.ReadInt32();
var pcm = new byte[pcm_size];
int dst = 0;
while (dst < pcm_size)
{
if (0 == GetBits (1))
{
pcm[dst++] = (byte)GetBits (7);
}
else if (0 == GetBits (1))
{
int sample = GetBits (2);
switch (sample)
{
case 0xC0:
sample = pcm[dst-1] + 4;
break;
case 0x80:
sample = pcm[dst-1] + 2;
break;
case 0x40:
sample = pcm[dst-1] - 2;
break;
case 0x00:
sample = pcm[dst-1] - 4;
break;
}
pcm[dst++] = (byte)sample;
}
else if (0 == GetBits (1))
{
int sample = GetBits (2);
switch (sample)
{
case 0xC0:
sample = pcm[dst-1] + 8;
break;
case 0x80:
sample = pcm[dst-1] + 6;
break;
case 0x40:
sample = pcm[dst-1] - 6;
break;
case 0x00:
sample = pcm[dst-1] - 8;
break;
}
pcm[dst++] = (byte)sample;
}
else
{
int count = GetBits (5) >> 3;
if (0x1F == count)
count = GetBits (8) + 0x1F;
++count;
Binary.CopyOverlapped (pcm, dst - 1, dst, count);
dst += count;
}
if (0xFE == pcm[dst-1])
pcm[dst-1] = 0xFF;
}
return new MemoryStream (pcm);
}
static readonly byte[] mask_table = { 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80 };
int GetBits (int count)
{
int v = 0;
for (int i = 0; i < count; ++i)
{
if (--m_cur_bit < 0)
{
m_cur_byte = m_input.ReadUInt8();
m_cur_bit = 7;
}
if (0 != (m_cur_byte & mask_table[m_cur_bit]))
v |= mask_table[7 - i];
}
return v;
}
}
}