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added more PC-98 formats.

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MIA, MAI2, MAI3 images, D-Motion archives.
This commit is contained in:
morkt
2023-10-27 04:20:15 +04:00
parent 1521532bf4
commit b09ee4570c
6 changed files with 1190 additions and 9 deletions
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20
Legacy/System98/ImageG.cs
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@@ -76,12 +76,16 @@ namespace GameRes.Formats.System98
}
}
/// <summary>
/// This compression format is used in several PC-98 game engines.
/// </summary>
internal class GraBaseReader
{
protected IBinaryStream m_input;
protected ImageMetaData m_info;
protected int m_output_stride;
protected byte[] m_pixels;
protected int m_dst;
public byte[] Pixels => m_pixels;
public int Stride => m_output_stride;
@@ -94,7 +98,7 @@ namespace GameRes.Formats.System98
m_pixels = new byte[m_output_stride * m_info.iHeight];
}
ushort[] m_buffer;
protected ushort[] m_buffer;
public void UnpackBits ()
{
@@ -216,8 +220,6 @@ namespace GameRes.Formats.System98
}
}
int m_dst;
bool FlushBuffer ()
{
MovePixels (m_buffer, m_info.iWidth * 4, 0, m_info.iWidth);
@@ -231,14 +233,14 @@ namespace GameRes.Formats.System98
return m_dst == m_pixels.Length;
}
ushort ReadPair (int pos)
protected ushort ReadPair (int pos)
{
byte al = ReadPixel (pos);
byte ah = ReadPixel (al);
return (ushort)(al | ah << 8);
}
byte ReadPixel (int pos)
protected byte ReadPixel (int pos)
{
byte px = 0;
if (GetNextBit() == 0)
@@ -277,7 +279,7 @@ namespace GameRes.Formats.System98
byte[] m_frame;
void InitFrame ()
protected void InitFrame ()
{
m_frame = new byte[0x100];
int p = 0;
@@ -293,7 +295,7 @@ namespace GameRes.Formats.System98
}
}
void MovePixels (ushort[] pixels, int src, int dst, int count)
protected void MovePixels (ushort[] pixels, int src, int dst, int count)
{
count <<= 1;
if (dst > src)
@@ -315,12 +317,12 @@ namespace GameRes.Formats.System98
int m_bits;
int m_bit_count;
void InitBitReader ()
protected void InitBitReader ()
{
m_bit_count = 1;
}
byte GetNextBit ()
protected byte GetNextBit ()
{
if (--m_bit_count <= 0)
{