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(WADY): alt decoder.

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This commit is contained in:
morkt 2018-08-31 04:32:51 +04:00
parent 75d7d3307d
commit 8cd0b4908e
1 changed files with 52 additions and 0 deletions
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52
ArcFormats/Marble/AudioWADY.cs
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@ -135,6 +135,20 @@ namespace GameRes.Formats.Marble
Decode3 (input, output, 0);
}
private void Decode2Alt (IBinaryStream input, Stream output)
{
if (1 != Format.Channels)
{
int channel_size = input.ReadInt32();
Decode3Alt (input, output, 2);
input.Position = 0x38 + channel_size;
output.Position = 2;
Decode3Alt (input, output, 2);
}
else
Decode3Alt (input, output, 0);
}
private void Decode3 (IBinaryStream input, Stream output, int step)
{
input.ReadInt32(); // unpacked_size
@ -179,7 +193,45 @@ namespace GameRes.Formats.Marble
}
}
private void Decode3Alt (IBinaryStream input, Stream output, int step)
{
int output_size = input.ReadInt32();
int count = input.ReadInt32();
using (var buffer = new BinaryWriter (output, Encoding.ASCII, true))
{
short sample = input.ReadInt16();
buffer.Write (sample);
int output_count = 1;
for (int i = 0; i < count; ++i)
{
short v = input.ReadInt16();
int repeat = SizeTableAlt[v & 7];
output_count += repeat;
short end = (short)(v & 0xFFF8);
short inc = (short)((end - sample) / repeat);
for (int j = 0; j < repeat; ++j)
{
sample += inc;
buffer.Write (sample);
if (step != 0)
buffer.BaseStream.Seek (step, SeekOrigin.Current);
}
sample = end;
}
if (step != 0)
output_size /= step;
while (output_count++ < output_size)
{
sample = input.ReadInt16();
buffer.Write (sample);
if (step != 0)
buffer.BaseStream.Seek (step, SeekOrigin.Current);
}
}
}
static readonly int[] SizeTable = new int[] { 3, 4, 5, 6, 8, 0x10, 0x20, 0x100 };
static readonly int[] SizeTableAlt = new int[] { 2, 3, 4, 5, 6, 8, 0x10, 0x20 };
static readonly ushort[] SampleTable = new ushort[] {
0x0000, 0x0002, 0x0004, 0x0006, 0x0008, 0x000A, 0x000C, 0x000F,