public IarImage(IarArchive iarc, Entry entry)
{
int flags = iarc.File.View.ReadUInt16(entry.Offset);
int bpp;
switch (flags & 0x3E)
{
case 0x02: bpp = 8; break;
case 0x1C: bpp = 24; break;
case 0x3C: bpp = 32; break;
default: throw new NotSupportedException("Not supported IAR image format");
}
var offset = entry.Offset;
m_info = new IarImageInfo
{
Flags = flags,
BPP = bpp,
Compressed = iarc.File.View.ReadByte(offset + 3) != 0,
Width = iarc.File.View.ReadUInt32(offset + 0x20),
Height = iarc.File.View.ReadUInt32(offset + 0x24),
Stride = iarc.File.View.ReadInt32(offset + 0x28),
OffsetX = iarc.File.View.ReadInt32(offset + 0x18),
OffsetY = iarc.File.View.ReadInt32(offset + 0x1C),
UnpackedSize = iarc.File.View.ReadInt32(offset + 8),
PaletteSize = iarc.File.View.ReadUInt32(offset + 0xC),
PackedSize = iarc.File.View.ReadInt32(offset + 0x10),
};
uint header_size = 1 == iarc.Version ? 0x30u : iarc.Version < 4 ? 0x40u : 0x48u;
offset += header_size;
uint input_size = entry.Size - header_size;
if (m_info.PaletteSize > 0)
{
m_palette = new byte[m_info.PaletteSize];
iarc.File.View.Read(offset, m_palette, 0, m_info.PaletteSize);
offset += m_info.PaletteSize;
input_size -= m_info.PaletteSize;
}
m_output = new byte[m_info.UnpackedSize];
using (var input = iarc.File.CreateStream(offset, input_size))
{
if (m_info.Compressed)
{
using (var reader = new IarDecompressor(input))
reader.Unpack(m_output);
}
else
{
input.Read(m_output, 0, m_output.Length);
}
}
}
public IarImage(IarImageInfo info, byte[] pixels, byte[] palette = null)
{
m_info = info;
m_output = pixels;
m_palette = palette;
}
public IarImage(IarImageInfo info, byte[] pixels, byte[] palette = null)
{
m_info = info;
m_output = pixels;
m_palette = palette;
}
public IarImage(IarArchive iarc, Entry entry)
{
int flags = iarc.File.View.ReadUInt16 (entry.Offset);
int bpp;
switch (flags & 0x3E)
{
case 0x02: bpp = 8; break;
case 0x1C: bpp = 24; break;
case 0x3C: bpp = 32; break;
default: throw new NotSupportedException ("Not supported IAR image format");
}
var offset = entry.Offset;
m_info = new IarImageInfo
{
Flags = flags,
BPP = bpp,
Compressed = iarc.File.View.ReadByte (offset+3) != 0,
Width = iarc.File.View.ReadUInt32 (offset+0x20),
Height = iarc.File.View.ReadUInt32 (offset+0x24),
Stride = iarc.File.View.ReadInt32 (offset+0x28),
OffsetX = iarc.File.View.ReadInt32 (offset+0x18),
OffsetY = iarc.File.View.ReadInt32 (offset+0x1C),
UnpackedSize = iarc.File.View.ReadInt32 (offset+8),
PaletteSize = iarc.File.View.ReadUInt32 (offset+0xC),
PackedSize = iarc.File.View.ReadInt32 (offset+0x10),
};
uint header_size = 1 == iarc.Version ? 0x30u : iarc.Version < 4 ? 0x40u : 0x48u;
offset += header_size;
uint input_size = entry.Size - header_size;
if (m_info.PaletteSize > 0)
{
m_palette = new byte[m_info.PaletteSize];
iarc.File.View.Read (offset, m_palette, 0, m_info.PaletteSize);
offset += m_info.PaletteSize;
input_size -= m_info.PaletteSize;
}
m_output = new byte[m_info.UnpackedSize];
using (var input = iarc.File.CreateStream (offset, input_size))
{
if (m_info.Compressed)
{
using (var reader = new IarDecompressor (input))
reader.Unpack (m_output);
}
else
input.Read (m_output, 0, m_output.Length);
}
}
