void UnpackV2(ParallelCbgDecoder decoder)
{
var base_offset = Input.Position;
decoder.Tree1 = new HuffmanTree(ReadWeightTable(Input, 0x10), true);
decoder.Tree2 = new HuffmanTree(ReadWeightTable(Input, 0xB0), true);
int y_blocks = decoder.Height / 8;
var offsets = new int[y_blocks + 1];
int input_base = (int)(Input.Position + offsets.Length * 4 - base_offset);
using (var reader = new ArcView.Reader(Input))
{
for (int i = 0; i < offsets.Length; ++i)
{
offsets[i] = reader.ReadInt32() - input_base;
}
decoder.Input = reader.ReadBytes((int)(Input.Length - Input.Position));
}
int pad_skip = ((decoder.Width >> 3) + 7) >> 3;
var tasks = new List <Task> (y_blocks + 1);
decoder.Output = new byte[decoder.Width * decoder.Height * 4];
int dst = 0;
for (int i = 0; i < y_blocks; ++i)
{
int block_offset = offsets[i] + pad_skip;
int next_offset = i + 1 == y_blocks ? decoder.Input.Length : offsets[i + 1];
int closure_dst = dst;
var task = Task.Run(() => decoder.UnpackBlock(block_offset, next_offset - block_offset, closure_dst));
tasks.Add(task);
dst += decoder.Width * 32;
}
if (32 == m_info.BPP)
{
var task = Task.Run(() => decoder.UnpackAlpha(offsets[y_blocks]));
tasks.Add(task);
}
var complete = Task.WhenAll(tasks);
complete.Wait();
Format = decoder.HasAlpha ? PixelFormats.Bgra32 : PixelFormats.Bgr32;
Stride = decoder.Width * 4;
m_output = decoder.Output;
}
public void Unpack()
{
Input.Position = 0x30;
if (m_info.Version < 2)
{
UnpackV1();
}
else if (2 == m_info.Version)
{
if (m_info.EncLength < 0x80)
{
throw new InvalidFormatException();
}
using (var decoder = new ParallelCbgDecoder(m_info, ReadEncoded()))
UnpackV2(decoder);
}
else
{
throw new NotSupportedException("Not supported CompressedBG version");
}
}
void UnpackV2(ParallelCbgDecoder decoder)
{
var base_offset = Input.Position;
decoder.Tree1 = new HuffmanTree (ReadWeightTable (Input, 0x10), true);
decoder.Tree2 = new HuffmanTree (ReadWeightTable (Input, 0xB0), true);
int y_blocks = decoder.Height / 8;
var offsets = new int[y_blocks+1];
int input_base = (int)(Input.Position + offsets.Length*4 - base_offset);
using (var reader = new ArcView.Reader (Input))
{
for (int i = 0; i < offsets.Length; ++i)
offsets[i] = reader.ReadInt32() - input_base;
decoder.Input = reader.ReadBytes ((int)(Input.Length - Input.Position));
}
int pad_skip = ((decoder.Width >> 3) + 7) >> 3;
var tasks = new List<Task> (y_blocks+1);
decoder.Output = new byte[decoder.Width * decoder.Height * 4];
int dst = 0;
for (int i = 0; i < y_blocks; ++i)
{
int block_offset = offsets[i] + pad_skip;
int next_offset = i+1 == y_blocks ? decoder.Input.Length : offsets[i+1];
int closure_dst = dst;
var task = Task.Run (() => decoder.UnpackBlock (block_offset, next_offset-block_offset, closure_dst));
tasks.Add (task);
dst += decoder.Width * 32;
}
if (32 == m_info.BPP)
{
var task = Task.Run (() => decoder.UnpackAlpha (offsets[y_blocks]));
tasks.Add (task);
}
var complete = Task.WhenAll (tasks);
complete.Wait();
Format = decoder.HasAlpha ? PixelFormats.Bgra32 : PixelFormats.Bgr32;
Stride = decoder.Width * 4;
m_output = decoder.Output;
}
public void Unpack()
{
Input.Position = 0x30;
if (m_info.Version < 2)
UnpackV1();
else if (2 == m_info.Version)
{
if (m_info.EncLength < 0x80)
throw new InvalidFormatException();
using (var decoder = new ParallelCbgDecoder (m_info, ReadEncoded()))
UnpackV2 (decoder);
}
else
throw new NotSupportedException ("Not supported CompressedBG version");
}
