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implemented 16bpp LIM images.

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This commit is contained in:
morkt
2016-04-15 12:16:09 +04:00
parent dee61a2929
commit 37da6b588e
2 changed files with 150 additions and 26 deletions
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162
ArcFormats/Liar/ImageWCG.cs
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@@ -479,10 +479,12 @@ namespace GameRes.Formats.Liar
int flag = stream.ReadByte() & 0xF;
if (flag != 2 && flag != 3)
return null;
stream.Seek (5, SeekOrigin.Current);
stream.ReadByte();
using (var file = new ArcView.Reader (stream))
{
var meta = new ImageMetaData { BPP = 32 };
int bpp = 0x10 == file.ReadUInt16() ? 16 : 32;
var meta = new ImageMetaData { BPP = bpp };
file.ReadUInt16();
meta.Width = file.ReadUInt32();
meta.Height = file.ReadUInt32();
return meta;
@@ -512,16 +514,24 @@ namespace GameRes.Formats.Liar
byte[] m_image;
int m_width;
int m_height;
int m_bpp;
public byte[] Data { get { return m_image; } }
public PixelFormat Format { get { return PixelFormats.Bgra32; } }
public PixelFormat Format { get; private set; }
public Reader (Stream file, ImageMetaData info)
{
m_input = new ArcView.Reader (file);
m_width = (int)info.Width;
m_height = (int)info.Height;
m_image = new byte[m_width*m_height*4];
m_bpp = info.BPP;
if (32 == m_bpp)
Format = PixelFormats.Bgra32;
else if (16 == m_bpp)
Format = PixelFormats.Bgr565;
else
throw new InvalidFormatException();
m_image = new byte[m_width*m_height*m_bpp/8];
}
int m_remaining;
@@ -529,25 +539,19 @@ namespace GameRes.Formats.Liar
int m_bits;
public void Unpack ()
{
if (32 == m_bpp)
Unpack32bpp();
else
Unpack16bpp();
}
void Unpack32bpp ()
{
byte mask = 0xFF;
for (int i = 3; i >= 0; --i)
{
int channel_size = m_input.ReadInt32();
if (null == m_output)
m_output = new byte[channel_size];
else if (channel_size != m_output.Length)
throw new InvalidFormatException();
m_remaining = m_input.ReadInt32();
int index_size = m_input.ReadUInt16();
if (null == m_index || index_size > m_index.Length)
m_index = new byte[index_size];
m_input.ReadInt16(); // ignored
if (m_index.Length != m_input.Read (m_index, 0, m_index.Length))
throw new InvalidFormatException ("Unexpected end of file");
UnpackChannel();
UnpackChannel (3);
int src = 0;
for (int p = i; p < m_image.Length; p += 4)
{
@@ -557,13 +561,117 @@ namespace GameRes.Formats.Liar
}
}
void UnpackChannel ()
void Unpack16bpp ()
{
int image_size = m_input.ReadInt32();
m_output = m_image;
m_remaining = m_input.ReadInt32();
int index_size = m_input.ReadUInt16() * 2;
if (null == m_index || index_size > m_index.Length)
m_index = new byte[index_size];
m_input.ReadInt16(); // ignored
if (index_size != m_input.Read (m_index, 0, index_size))
throw new InvalidFormatException ("Unexpected end of file");
int card;
if (index_size > 8192)
{
m_index_threshold = 14;
m_index_length_limit = 16;
card = 4;
}
else
{
m_index_threshold = 6;
m_index_length_limit = 12;
card = 3;
}
m_current = 0;
int dst = 0;
while (dst < m_output.Length)
{
int bits = GetBits (3);
int bits = GetBits (card);
if (-1 == bits)
break;
if (0 != bits)
{
int index = GetIndex (bits);
if (index < 0)
break;
if (dst + 1 >= m_output.Length)
break;
m_output[dst++] = m_index[index*2];
m_output[dst++] = m_index[index*2+1];
}
else
{
int count = GetBits (4);
if (-1 == count)
break;
bits = GetBits (card);
if (-1 == bits)
break;
int index = GetIndex (bits);
if (-1 == index)
break;
count += 2;
index *= 2;
for (int i = 0; i < count; i++)
{
if (dst + 1 >= m_output.Length)
return;
m_output[dst++] = m_index[index];
m_output[dst++] = m_index[index+1];
}
}
}
if (m_input.BaseStream.Position < m_input.BaseStream.Length)
{
m_output = null;
UnpackChannel (3);
var pixels = new byte[m_width*m_height*4];
int alpha_src = 0;
dst = 0;
for (int i = 0; i < m_image.Length; i += 2)
{
int color = LittleEndian.ToUInt16 (m_image, i);
pixels[dst++] = (byte)((color & 0x001F) * 0xFF / 0x1F);
pixels[dst++] = (byte)((color & 0x07E0) * 0xFF / 0x7E0);
pixels[dst++] = (byte)((color & 0xF800) * 0xFF / 0xF800);
pixels[dst++] = (byte)~m_output[alpha_src++];
}
m_image = pixels;
Format = PixelFormats.Bgra32;
}
}
void UnpackChannel (int card)
{
m_index_threshold = 6;
m_index_length_limit = 12;
int channel_size = m_input.ReadInt32();
if (null == m_output || m_output.Length < channel_size)
m_output = new byte[channel_size];
m_remaining = m_input.ReadInt32();
int index_size = m_input.ReadUInt16();
if (null == m_index || index_size > m_index.Length)
m_index = new byte[index_size];
m_input.ReadInt16(); // ignored
if (index_size != m_input.Read (m_index, 0, index_size))
throw new InvalidFormatException ("Unexpected end of file");
m_current = 0;
int dst = 0;
while (dst < m_output.Length)
{
int bits = GetBits (card);
if (-1 == bits)
break;
@@ -583,7 +691,7 @@ namespace GameRes.Formats.Liar
if (-1 == count)
break;
bits = GetBits (3);
bits = GetBits (card);
if (-1 == bits)
break;
@@ -608,7 +716,10 @@ namespace GameRes.Formats.Liar
{
if (0 == m_current)
{
if (0 == m_remaining)
return 0;
m_bits = m_input.ReadByte();
--m_remaining;
m_current = 8;
}
v <<= 1;
@@ -620,9 +731,12 @@ namespace GameRes.Formats.Liar
return v;
}
int m_index_threshold;
int m_index_length_limit;
private int GetIndex (int bits)
{
if (bits < 7)
if (bits <= m_index_threshold)
{
if (0 == bits)
return -1;
@@ -630,7 +744,7 @@ namespace GameRes.Formats.Liar
return GetBits (1);
return (1 << bits) | GetBits (bits);
}
for (int i = 6; i < 12; ++i)
for (int i = m_index_threshold; i < m_index_length_limit; ++i)
{
bits = GetBits (1);
if (-1 == bits)