implemented incremental compression of S25 images.

This commit is contained in:
morkt 2015-08-01 00:24:04 +04:00
parent ea6eab502c
commit 2d22dbe946
2 changed files with 240 additions and 89 deletions

View File

@ -96,6 +96,7 @@ namespace GameRes.Formats.ShiinaRio
OffsetY = arc.File.View.ReadInt32 (offset+12),
BPP = 32,
FirstOffset = (uint)(offset + 0x14),
Incremental = 0 != (arc.File.View.ReadUInt32 (offset+0x10) & 0x80000000u),
};
using (var input = arc.File.CreateStream (0, (uint)arc.File.MaxOffset))
using (var reader = new S25Format.Reader (input, info))

View File

@ -37,6 +37,7 @@ namespace GameRes.Formats.ShiinaRio
internal class S25MetaData : ImageMetaData
{
public uint FirstOffset;
public bool Incremental;
}
[Export(typeof(ImageFormat))]
@ -67,6 +68,7 @@ namespace GameRes.Formats.ShiinaRio
info.OffsetX = input.ReadInt32();
info.OffsetY = input.ReadInt32();
info.FirstOffset = first_offset+0x14;
info.Incremental = 0 != (input.ReadUInt32() & 0x80000000u);
info.BPP = 32;
return info;
}
@ -96,8 +98,8 @@ namespace GameRes.Formats.ShiinaRio
int m_width;
int m_height;
uint m_origin;
uint[] m_rows;
byte[] m_output;
bool m_incremental;
public byte[] Data { get { return m_output; } }
@ -105,111 +107,259 @@ namespace GameRes.Formats.ShiinaRio
{
m_width = (int)info.Width;
m_height = (int)info.Height;
m_rows = new uint[m_height];
m_output = new byte[m_width * m_height * 4];
m_input = new ArcView.Reader (file);
m_origin = info.FirstOffset;
m_incremental = info.Incremental;
}
public byte[] Unpack ()
{
m_input.BaseStream.Position = m_origin;
for (int i = 0; i < m_rows.Length; ++i)
m_rows[i] = m_input.ReadUInt32();
if (m_incremental)
return UnpackIncremental();
var rows = new uint[m_height];
for (int i = 0; i < rows.Length; ++i)
rows[i] = m_input.ReadUInt32();
var row_buffer = new byte[m_width];
int dst = 0;
int stride = m_width * 4;
for (int y = 0; y < m_height && dst != m_output.Length; ++y)
for (int y = 0; y < m_height && dst < m_output.Length; ++y)
{
byte b, g, r, a;
uint row_pos = m_rows[y];
uint row_pos = rows[y];
m_input.BaseStream.Position = row_pos;
m_input.ReadUInt16();
for (int x = m_width; x > 0 && dst != m_output.Length; )
int row_length = m_input.ReadUInt16();
row_pos += 2;
if (0 != (row_pos & 1))
{
if (0 != (row_pos & 1))
{
m_input.ReadByte();
++row_pos;
}
int count = m_input.ReadUInt16();
row_pos += 2;
int method = count >> 13;
int skip = (count & 0x1800) >> 11;
if (0 != skip)
{
m_input.BaseStream.Seek (skip, SeekOrigin.Current);
row_pos += (uint)skip;
}
count &= 0x7ff;
if (count > x) count = x;
x -= count;
if (0 == method || 1 == method)
{
dst += count * 4;
}
else if (2 == method)
{
for (int i = 0; i < count; ++i)
{
m_output[dst++] = m_input.ReadByte();
m_output[dst++] = m_input.ReadByte();
m_output[dst++] = m_input.ReadByte();
m_output[dst++] = 0xff;
row_pos += 3;
}
}
else if (3 == method)
{
b = m_input.ReadByte();
g = m_input.ReadByte();
r = m_input.ReadByte();
row_pos += 3;
for (int i = 0; i < count; ++i)
{
m_output[dst++] = b;
m_output[dst++] = g;
m_output[dst++] = r;
m_output[dst++] = 0xff;
}
}
else if (4 == method)
{
for (int i = 0; i < count; ++i)
{
a = m_input.ReadByte();
m_output[dst] += (byte)((m_input.ReadByte() - m_output[dst]) * a / 256);
++dst;
m_output[dst] += (byte)((m_input.ReadByte() - m_output[dst]) * a / 256);
++dst;
m_output[dst] += (byte)((m_input.ReadByte() - m_output[dst]) * a / 256);
++dst;
m_output[dst++] = a;
row_pos += 4;
}
}
else
{
row_pos += 4;
a = m_input.ReadByte();
b = m_input.ReadByte();
g = m_input.ReadByte();
r = m_input.ReadByte();
for (int i = 0; i < count; ++i)
{
m_output[dst] += (byte)((b - m_output[dst]) * a / 256);
++dst;
m_output[dst] += (byte)((g - m_output[dst]) * a / 256);
++dst;
m_output[dst] += (byte)((r - m_output[dst]) * a / 256);
++dst;
m_output[dst++] = a;
}
}
m_input.ReadByte();
--row_length;
}
if (row_buffer.Length < row_length)
row_buffer = new byte[row_length];
m_input.Read (row_buffer, 0, row_length);
dst = UnpackLine (row_buffer, dst);
}
return m_output;
}
void UpdateRepeatCount (Dictionary<uint, int> rows_count)
{
m_input.BaseStream.Position = 4;
int count = m_input.ReadInt32();
var frames = new List<uint> (count);
for (int i = 0; i < count; ++i)
{
var offset = m_input.ReadUInt32();
if (0 != offset)
frames.Add (offset);
}
foreach (var offset in frames)
{
if (offset+0x14 == m_origin)
continue;
m_input.BaseStream.Position = offset+4;
int height = m_input.ReadInt32();
m_input.BaseStream.Position = offset+0x14;
for (int i = 0; i < height; ++i)
{
var row_offset = m_input.ReadUInt32();
if (rows_count.ContainsKey (row_offset))
++rows_count[row_offset];
}
}
}
byte[] UnpackIncremental ()
{
var rows = new uint[m_height];
var rows_count = new Dictionary<uint, int> (m_height);
for (int i = 0; i < rows.Length; ++i)
{
uint offset = m_input.ReadUInt32();
rows[i] = offset;
if (rows_count.ContainsKey (offset))
++rows_count[offset];
else
rows_count[offset] = 1;
}
UpdateRepeatCount (rows_count);
var input_rows = new Dictionary<uint, byte[]> (m_height);
var input_lines = new byte[m_height][];
for (int y = 0; y < m_height; ++y)
{
uint row_pos = rows[y];
// if (183 == y)
// System.Diagnostics.Debugger.Break();
// if (0x82 == y)
// System.Diagnostics.Debugger.Break();
if (input_rows.ContainsKey (row_pos))
{
input_lines[y] = input_rows[row_pos];
continue;
}
var row = ReadLine (row_pos, rows_count[row_pos]);
input_rows[row_pos] = row;
input_lines[y] = row;
}
int dst = 0;
foreach (var line in input_lines)
{
dst = UnpackLine (line, dst);
}
return m_output;
}
int UnpackLine (byte[] line, int dst)
{
int row_pos = 0;
for (int x = m_width; x > 0 && dst < m_output.Length && row_pos < line.Length; )
{
if (0 != (row_pos & 1))
{
++row_pos;
}
int count = LittleEndian.ToUInt16 (line, row_pos);
row_pos += 2;
int method = count >> 13;
int skip = (count >> 11) & 3;
if (0 != skip)
{
row_pos += skip;
}
count &= 0x7ff;
if (0 == count)
{
count = LittleEndian.ToInt32 (line, row_pos);
row_pos += 4;
}
if (count > x) count = x;
x -= count;
byte b, g, r, a;
switch (method)
{
case 2:
for (int i = 0; i < count && row_pos < line.Length; ++i)
{
m_output[dst++] = line[row_pos++];
m_output[dst++] = line[row_pos++];
m_output[dst++] = line[row_pos++];
m_output[dst++] = 0xff;
}
break;
case 3:
b = line[row_pos++];
g = line[row_pos++];
r = line[row_pos++];
for (int i = 0; i < count; ++i)
{
m_output[dst++] = b;
m_output[dst++] = g;
m_output[dst++] = r;
m_output[dst++] = 0xff;
}
break;
case 4:
for (int i = 0; i < count && row_pos < line.Length; ++i)
{
a = line[row_pos++];
m_output[dst++] = line[row_pos++];
m_output[dst++] = line[row_pos++];
m_output[dst++] = line[row_pos++];
m_output[dst++] = a;
}
break;
case 5:
a = line[row_pos++];
b = line[row_pos++];
g = line[row_pos++];
r = line[row_pos++];
for (int i = 0; i < count; ++i)
{
m_output[dst++] = b;
m_output[dst++] = g;
m_output[dst++] = r;
m_output[dst++] = a;
}
break;
default:
dst += count * 4;
break;
}
}
return dst;
}
byte[] ReadLine (uint offset, int repeat)
{
m_input.BaseStream.Position = offset;
int row_length = m_input.ReadUInt16();
if (0 != (offset & 1))
{
m_input.ReadByte();
--row_length;
}
var row = new byte[row_length];
m_input.Read (row, 0, row.Length);
int row_pos = 0;
for (int x = m_width; x > 0; )
{
if (0 != (row_pos & 1))
{
++row_pos;
}
int count = LittleEndian.ToUInt16 (row, row_pos);
row_pos += 2;
int method = count >> 13;
int skip = (count >> 11) & 3;
if (0 != skip)
{
row_pos += skip;
}
count &= 0x7ff;
if (0 == count)
{
count = LittleEndian.ToInt32 (row, row_pos);
row_pos += 4;
}
if (count < 0 || count > x) count = x;
x -= count;
switch (method)
{
case 2:
for (int j = 0; j < repeat; ++j)
{
for (int i = 3; i < count*3 && row_pos+i < row.Length; ++i)
{
row[row_pos+i] += row[row_pos+i-3];
}
}
row_pos += count*3;
break;
case 3:
row_pos += 3;
break;
case 4:
for (int j = 0; j < repeat; ++j)
{
for (int i = 4; i < count*4 && row_pos+i < row.Length; ++i)
{
row[row_pos+i] += row[row_pos+i-4];
}
}
row_pos += count*4;
break;
case 5:
row_pos += 4;
break;
default:
break;
}
}
return row;
}
#region IDisposable Members
bool disposed = false;