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(GBP): finieshed implementation.

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This commit is contained in:
morkt 2018-09-13 16:10:38 +04:00
parent d7496a6397
commit d71f174862
1 changed files with 207 additions and 7 deletions
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214
Legacy/Sviu/ImageGBP.cs
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@ -27,12 +27,14 @@ using System;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
using GameRes.Utility;
namespace GameRes.Formats.Sviu
{
internal class GbpMetaData : ImageMetaData
{
public int HeaderSize;
public int DataOffset;
public int Method;
}
@ -41,7 +43,7 @@ namespace GameRes.Formats.Sviu
{
public override string Tag { get { return "GBP"; } }
public override string Description { get { return "SVIU system image format"; } }
public override uint Signature { get { return 0x50425947; } }
public override uint Signature { get { return 0x50425947; } } // 'GYBP'
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
@ -62,8 +64,10 @@ namespace GameRes.Formats.Sviu
Height = header.ToUInt16 (0x10),
BPP = header.ToUInt16 (0x12),
HeaderSize = header.ToInt32 (4),
DataOffset = header.ToInt32 (8),
Method = header.ToUInt16 (0xC),
};
// 0x14 -> 32-bit checksum after encryption
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
@ -84,6 +88,9 @@ namespace GameRes.Formats.Sviu
IBinaryStream m_input;
GbpMetaData m_info;
byte[] m_output;
int m_width;
int m_height;
int m_channels;
public PixelFormat Format { get; private set; }
@ -95,22 +102,215 @@ namespace GameRes.Formats.Sviu
Format = PixelFormats.Bgra32;
else
Format = PixelFormats.Bgr32;
m_output = new byte[4 * (int)m_info.Width * (int)m_info.Height];
m_width = (int)m_info.Width;
m_height = (int)m_info.Height;
m_output = new byte[4 * m_width * m_height];
m_channels = m_info.BPP / 8;
bits_pos = new int[m_channels+1];
data_pos = new int[m_channels+1];
}
public byte[] Unpack ()
{
m_input.Position = m_info.HeaderSize;
ReadOffsetsTable();
if (3 == m_info.Method)
UnpackV3();
UnpackBlocks();
else
throw new NotImplementedException();
UnpackFlat();
return m_output;
}
void UnpackV3 ()
byte[] m_frame = new byte[0x1000];
int[] bits_pos;
int[] data_pos;
void ReadOffsetsTable ()
{
throw new NotImplementedException();
m_input.Position = m_info.HeaderSize;
bits_pos[0] = m_info.HeaderSize + 4 * m_channels;
for (int i = 0; i < m_channels; ++i)
{
bits_pos[i+1] = bits_pos[i] + m_input.ReadInt32();
}
m_input.Position = m_info.DataOffset;
data_pos[0] = m_info.DataOffset + 4 * m_channels;
for (int i = 0; i < m_channels; ++i)
{
data_pos[i+1] = data_pos[i] + m_input.ReadInt32();
}
}
void UnpackFlat ()
{
var channel = new byte[m_width * m_height];
for (int i = 0; i < 3; ++i)
{
m_input.Position = bits_pos[i];
var bits = m_input.ReadBytes (bits_pos[i+1] - bits_pos[i]);
m_input.Position = data_pos[i];
if (1 == m_info.Method)
{
int bits_src = 0;
int bit_mask = 0x80;
int cdst = 0;
while (cdst < channel.Length)
{
if (0 == bit_mask)
{
++bits_src;
bit_mask = 0x80;
}
if ((bits[bits_src] & bit_mask) != 0)
{
int offset = m_input.ReadUInt16();
int count = (offset & 0xF) + 3;
offset = (offset >> 4) + 1;
Binary.CopyOverlapped (channel, cdst - offset, cdst, count);
cdst += count;
}
else
{
channel[cdst++] = m_input.ReadUInt8();
}
bit_mask >>= 1;
}
}
else if (2 == m_info.Method)
{
LzssUnpack (bits, 0, channel, channel.Length);
}
int dst = i;
byte accum = 0;
for (int csrc = 0; csrc < channel.Length; ++csrc)
{
accum += channel[csrc];
m_output[dst] = accum;
dst += 4;
}
}
if (4 == m_channels)
{
m_input.Position = data_pos[3];
int dst = 3;
while (dst < m_output.Length)
{
byte a = m_input.ReadUInt8();
int count = 1;
if (a == 0 || a == 0xFF)
{
count += m_input.ReadUInt8();
}
while (count --> 0)
{
m_output[dst] = a;
dst += 4;
}
}
}
}
void UnpackBlocks ()
{
var channel = new byte[m_width * m_height];
int stride = m_width * 4;
int block_stride = stride * 8;
for (int i = 0; i < m_channels; ++i)
{
m_input.Position = bits_pos[i];
int block_bits_length = m_input.ReadInt32();
int block_data_length = m_input.ReadInt32();
int chunk_count = m_input.ReadInt32();
var bits = m_input.ReadBytes (bits_pos[i+1] - bits_pos[i] - 12);
int bits_src = block_bits_length + block_data_length;
m_input.Position = data_pos[i];
LzssUnpack (bits, bits_src, channel, chunk_count);
int csrc = 0;
bits_src = 0;
int block_src = block_bits_length;
int dst_block = i;
int bit_mask = 0x80;
for (int y = 0; y < m_height; y += 8)
{
int block_height = Math.Min (8, m_height - y);
int dst_block_x = dst_block;
for (int x = 0; x < m_width; x += 8)
{
int block_width = Math.Min (8, m_width - x);
if (0 == bit_mask)
{
bit_mask = 0x80;
++bits_src;
}
int dst_row = dst_block_x;
if ((bit_mask & bits[bits_src]) != 0)
{
byte b = bits[block_src++];
for (int by = 0; by < block_height; ++by)
{
int dst = dst_row;
for (int bx = 0; bx < block_width; ++bx)
{
m_output[dst] = b;
dst += 4;
}
dst_row += stride;
}
}
else
{
for (int by = 0; by < block_height; ++by)
{
int dst = dst_row;
for (int bx = 0; bx < block_width; ++bx)
{
m_output[dst] = channel[csrc++];
dst += 4;
}
dst_row += stride;
}
}
dst_block_x += 32;
bit_mask >>= 1;
}
dst_block += block_stride;
}
}
}
void LzssUnpack (byte[] ctl_bits, int bits_src, byte[] output, int output_length)
{
for (int j = 0; j < m_frame.Length; ++j)
m_frame[j] = 0;
int dst = 0;
int bit_mask = 0x80;
int frame_pos = 0xFEE;
while (dst < output_length)
{
if (0 == bit_mask)
{
bit_mask = 0x80;
++bits_src;
}
if ((bit_mask & ctl_bits[bits_src]) != 0)
{
int offset = m_input.ReadUInt16();
int count = (offset & 0xF) + 3;
offset >>= 4;
while (count --> 0)
{
byte v = m_frame[offset++ & 0xFFF];
output[dst++] = m_frame[frame_pos++ & 0xFFF] = v;
}
}
else
{
output[dst++] = m_frame[frame_pos++ & 0xFFF] = m_input.ReadUInt8();
}
bit_mask >>= 1;
}
}
}
}