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(Pt1Format): implemented compression type 0.

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This commit is contained in:
morkt 2015-05-14 15:42:58 +04:00
parent 9a43b6b055
commit 18a4089224
1 changed files with 69 additions and 20 deletions
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89
ArcFormats/ImagePT1.cs
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@ -51,7 +51,7 @@ namespace GameRes.Formats.Ffa
public Pt1Format ()
{
Signatures = new uint[] { 1, 2 };
Signatures = new uint[] { 2, 1, 0 };
}
public override void Write (Stream file, ImageData image)
@ -64,6 +64,8 @@ namespace GameRes.Formats.Ffa
using (var input = new ArcView.Reader (stream))
{
int type = input.ReadInt32();
if (type < 0 || type > 2)
return null;
if (-1 != input.ReadInt32())
return null;
int x = input.ReadInt32();
@ -125,10 +127,12 @@ namespace GameRes.Formats.Ffa
public byte[] Unpack ()
{
if (2 == m_type)
UnpackV2();
else
UnpackV1();
switch (m_type)
{
case 2: UnpackV2(); break;
case 1: UnpackV1(); break;
case 0: UnpackV0(); break;
}
return m_output;
}
@ -528,21 +532,7 @@ namespace GameRes.Formats.Ffa
int src = 0; // dword_462E74
int dst = 0; // dword_462E78
byte[] frame = new byte[0x1000]; // word_461A28
int ecx;
int fill = 0;
for (int al = 0; al < 0x100; ++al)
for (ecx = 0x0d; ecx > 0; --ecx)
frame[fill++] = (byte)al;
for (int al = 0; al < 0x100; ++al)
frame[fill++] = (byte)al;
for (int al = 0xff; al >= 0; --al)
frame[fill++] = (byte)al;
for (ecx = 0x80; ecx > 0; --ecx)
frame[fill++] = 0;
for (ecx = 0x6e; ecx > 0; --ecx)
frame[fill++] = 0x20;
for (ecx = 0x12; ecx > 0; --ecx)
frame[fill++] = 0;
PopulateLzssFrame (frame);
int ebp = 0xfee;
while (src < m_input.Length)
{
@ -580,6 +570,65 @@ namespace GameRes.Formats.Ffa
}
}
}
void UnpackV0 ()
{
int src = 0;
int dst = 0;
byte[] frame = new byte[0x1000]; // word_461A28
PopulateLzssFrame (frame);
int ebp = 0xfee;
for (;;)
{
byte ah = m_input[src++];
for (int mask = 1; mask != 0x100; mask <<= 1)
{
if (0 != (ah & mask))
{
byte al = m_input[src++];
frame[ebp++] = al;
ebp &= 0xfff;
m_output[dst++] = al;
}
else
{
int offset = m_input[src++];
int count = m_input[src++];
offset |= (count & 0xf0) << 4;
count = (count & 0x0f) + 3;
for (int i = 0; i < count; ++i)
{
byte al = frame[offset++];
frame[ebp++] = al;
offset &= 0xfff;
ebp &= 0xfff;
m_output[dst++] = al;
}
}
if (dst >= m_output.Length)
return;
}
}
}
void PopulateLzssFrame (byte[] frame)
{
int fill = 0;
int ecx;
for (int al = 0; al < 0x100; ++al)
for (ecx = 0x0d; ecx > 0; --ecx)
frame[fill++] = (byte)al;
for (int al = 0; al < 0x100; ++al)
frame[fill++] = (byte)al;
for (int al = 0xff; al >= 0; --al)
frame[fill++] = (byte)al;
for (ecx = 0x80; ecx > 0; --ecx)
frame[fill++] = 0;
for (ecx = 0x6e; ecx > 0; --ecx)
frame[fill++] = 0x20;
for (ecx = 0x12; ecx > 0; --ecx)
frame[fill++] = 0;
}
}
}
}