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(VafsOpener): added TP.055 audio decoder.

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This commit is contained in:
morkt 2016-02-03 12:12:19 +04:00
parent 6bfd5c285f
commit 0fe5d01ed7
1 changed files with 110 additions and 2 deletions
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112
ArcFormats/Softpal/ArcVAFS.cs
View File

@ -56,7 +56,12 @@ namespace GameRes.Formats.Softpal
uint data_offset = file.View.ReadUInt32 (index_offset);
var base_name = Path.GetFileNameWithoutExtension (file.Name).ToUpperInvariant();
if (0 == data_offset && "TP" == base_name)
return OpenTpArc (file);
{
if (file.Name.EndsWith (".055"))
return OpenTp055Arc (file);
else
return OpenTpArc (file);
}
if (data_offset < index_offset || data_offset >= file.MaxOffset)
return null;
int count = (int)(data_offset - index_offset) / 4;
@ -142,9 +147,52 @@ namespace GameRes.Formats.Softpal
return new TpArchive (file, this, dir);
}
ArcFile OpenTp055Arc (ArcView file)
{
uint index_offset = 0x20;
uint data_offset;
for (;;)
{
data_offset = file.View.ReadUInt32 (index_offset);
if (0 != data_offset)
break;
index_offset += 0x10;
if (0xA010 == index_offset)
return null;
}
if (data_offset >= file.MaxOffset)
return null;
var dir = new List<Entry>();
while (index_offset < data_offset)
{
var offset = file.View.ReadUInt32 (index_offset);
if (0 != offset)
{
if (offset >= file.MaxOffset)
return null;
var name = string.Format("TP#{0:D6}.wav", index_offset/0x10 - 1);
var entry = new Tp055Entry {
Name = name,
Offset = offset,
ChunkCount = file.View.ReadInt32 (index_offset+4),
};
dir.Add (entry);
}
index_offset += 0x10;
}
for (int i = 0; i < dir.Count-1; ++i)
{
dir[i].Size = (uint)(dir[i+1].Offset - dir[i].Offset);
}
dir[dir.Count-1].Size = (uint)(file.MaxOffset - dir[dir.Count-1].Offset);
return new TpArchive (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
if (arc is TpArchive)
if (entry is Tp055Entry)
return OpenVoice055Entry (arc, entry as Tp055Entry);
else if (arc is TpArchive)
return OpenVoiceEntry (arc, entry);
else if ("audio" == entry.Type
&& AudioFormat.Wav.Signature != arc.File.View.ReadUInt32 (entry.Offset))
@ -243,6 +291,59 @@ namespace GameRes.Formats.Softpal
return output;
}
Stream OpenVoice055Entry (ArcFile arc, Tp055Entry entry)
{
int pcm_size = entry.ChunkCount * 0x800;
var offset = entry.Offset;
var wav_mem = new MemoryStream (0x24 + pcm_size);
using (var wav = new BinaryWriter (wav_mem, Encoding.ASCII, true))
{
WriteWavHeader (wav, 1, 22050, pcm_size);
var buffer = new byte[0x402];
var output = new int[0x400];
for (int i = 0; i < entry.ChunkCount; ++i)
{
int ctl = arc.File.View.ReadByte (offset++) & 0x3F;
for (int j = 0; j < output.Length; ++j)
output[j] = 0;
for (; ctl != 0; ctl >>= 1)
{
if (0 == (ctl & 1))
continue;
arc.File.View.Read (offset, buffer, 0, 0x402);
offset += 0x402;
int pcm = LittleEndian.ToInt16 (buffer, 1);
int dst = 0;
int addend = buffer[0] << 8;
output[dst++] += pcm;
for (int src = 3; src < buffer.Length; ++src)
{
byte v = buffer[src];
int diff = v + addend;
pcm += WaveTable1.Value[diff];
output[dst++] += (short)pcm;
addend += WaveTable2.Value[v];
if (addend < 0)
addend = 0;
else if (addend >= 16384)
addend = 16128;
}
}
for (int j = 0; j < output.Length; ++j)
{
int pcm = output[j];
if (pcm > 32767)
pcm = 32767;
else if (pcm < -32767)
pcm = -32767;
wav.Write ((short)pcm);
}
}
}
wav_mem.Position = 0;
return wav_mem;
}
void WriteWavHeader (BinaryWriter wav, short channels, int freq, int pcm_size)
{
wav.Write ("RIFF".ToCharArray());
@ -287,4 +388,11 @@ namespace GameRes.Formats.Softpal
{
}
}
internal class Tp055Entry : Entry
{
public int ChunkCount;
public override string Type { get { return "audio"; } }
}
}