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(ParallelCbgDecoder): new internal class.

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This commit is contained in:
morkt 2015-12-28 00:58:12 +04:00
parent 294a8d2581
commit 808e737576
1 changed files with 112 additions and 106 deletions
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218
ArcFormats/Ethornell/ImageBGI.cs
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@ -213,7 +213,7 @@ namespace GameRes.Formats.BGI
return data; return data;
} }
static protected int ReadInteger (Stream input) static internal int ReadInteger (Stream input)
{ {
int v = 0; int v = 0;
int code; int code;
@ -330,7 +330,7 @@ namespace GameRes.Formats.BGI
} }
} }
class HuffmanNode internal class HuffmanNode
{ {
public bool Valid; public bool Valid;
public bool IsParent; public bool IsParent;
@ -404,7 +404,7 @@ namespace GameRes.Formats.BGI
return node_list.ToArray(); return node_list.ToArray();
} }
int DecodeToken (MsbBitStream input, HuffmanNode[] tree) internal static int DecodeToken (MsbBitStream input, HuffmanNode[] tree)
{ {
int node_index = tree.Length-1; int node_index = tree.Length-1;
do do
@ -421,6 +421,74 @@ namespace GameRes.Formats.BGI
return node_index; return node_index;
} }
void UnpackV2 ()
{
if (m_info.EncLength < 0x80)
throw new InvalidFormatException();
var decoder = new ParallelCbgDecoder (m_info, ReadEncoded());
var base_offset = Input.Position;
decoder.Tree1 = CreateHuffmanTree (ReadWeightTable (Input, 0x10), true);
decoder.Tree2 = CreateHuffmanTree (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;
}
}
internal class ParallelCbgDecoder
{
public byte[] Input;
public byte[] Output;
public int BPP;
public int Width;
public int Height;
public CbgReader.HuffmanNode[] Tree1;
public CbgReader.HuffmanNode[] Tree2;
public bool HasAlpha = false;
float[,] DCT = new float[2, 64];
public ParallelCbgDecoder (CbgMetaData info, byte[] dct_data)
{
BPP = info.BPP;
Width = ((int)info.Width + 7) & -8;
Height = ((int)info.Height + 7) & -8;
for (int i = 0; i < 0x80; ++i)
{
DCT[i >> 6, i & 0x3F] = dct_data[i] * DCT_Table[i & 0x3F];
}
}
static readonly float[] DCT_Table = { static readonly float[] DCT_Table = {
1.00000000f, 1.38703990f, 1.30656302f, 1.17587554f, 1.00000000f, 0.78569496f, 0.54119611f, 0.27589938f, 1.00000000f, 1.38703990f, 1.30656302f, 1.17587554f, 1.00000000f, 0.78569496f, 0.54119611f, 0.27589938f,
1.38703990f, 1.92387950f, 1.81225491f, 1.63098633f, 1.38703990f, 1.08979023f, 0.75066054f, 0.38268343f, 1.38703990f, 1.92387950f, 1.81225491f, 1.63098633f, 1.38703990f, 1.08979023f, 0.75066054f, 0.38268343f,
@ -432,81 +500,19 @@ namespace GameRes.Formats.BGI
0.27589938f, 0.38268343f, 0.36047992f, 0.32442334f, 0.27589938f, 0.21677275f, 0.14931567f, 0.07612047f, 0.27589938f, 0.38268343f, 0.36047992f, 0.32442334f, 0.27589938f, 0.21677275f, 0.14931567f, 0.07612047f,
}; };
void UnpackV2 () public void UnpackBlock (int offset, int length, int dst)
{ {
if (m_info.EncLength < 0x80) using (var input = new MemoryStream (this.Input, offset, length))
throw new InvalidFormatException();
var info = new DecodeInfo { BPP = m_info.BPP };
var dct_data = ReadEncoded();
for (int i = 0; i < 0x80; ++i)
{
info.DCT[i >> 6, i & 0x3F] = dct_data[i] * DCT_Table[i & 0x3F];
}
var base_offset = Input.Position;
info.Tree1 = CreateHuffmanTree (ReadWeightTable (Input, 0x10), true);
info.Tree2 = CreateHuffmanTree (ReadWeightTable (Input, 0xB0), true);
info.Width = ((int)m_info.Width + 7) & -8;
info.Height = ((int)m_info.Height + 7) & -8;
m_output = new byte[info.Width * info.Height * 4];
Stride = info.Width * 4;
int y_blocks = info.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;
info.Input = reader.ReadBytes ((int)(Input.Length - Input.Position));
}
int pad_skip = ((info.Width >> 3) + 7) >> 3;
var tasks = new List<Task> (y_blocks+1);
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 ? info.Input.Length : offsets[i+1];
int closure_dst = dst;
var task = Task.Run (() => UnpackBlock (info, block_offset, next_offset-block_offset, closure_dst));
tasks.Add (task);
dst += info.Width * 32;
}
if (32 == m_info.BPP)
{
var task = Task.Run (() => UnpackAlpha (info, offsets[y_blocks]));
tasks.Add (task);
}
var complete = Task.WhenAll (tasks);
complete.Wait();
Format = info.HasAlpha ? PixelFormats.Bgra32 : PixelFormats.Bgr32;
}
class DecodeInfo
{
public byte[] Input;
public int BPP;
public int Width;
public int Height;
public HuffmanNode[] Tree1;
public HuffmanNode[] Tree2;
public float[,] DCT = new float[2, 64];
public bool HasAlpha = false;
}
void UnpackBlock (DecodeInfo info, int offset, int length, int dst)
{
using (var input = new MemoryStream (info.Input, offset, length))
using (var reader = new MsbBitStream (input)) using (var reader = new MsbBitStream (input))
{ {
int block_size = ReadInteger (input); int block_size = CbgReader.ReadInteger (input);
if (-1 == block_size) if (-1 == block_size)
return; return;
var color_data = new short[block_size]; var color_data = new short[block_size];
int acc = 0; int acc = 0;
for (int i = 0; i < block_size && input.Position < input.Length; i += 64) for (int i = 0; i < block_size && input.Position < input.Length; i += 64)
{ {
int count = DecodeToken (reader, info.Tree1); int count = CbgReader.DecodeToken (reader, Tree1);
if (count != 0) if (count != 0)
{ {
int v = reader.GetBits (count); int v = reader.GetBits (count);
@ -525,7 +531,7 @@ namespace GameRes.Formats.BGI
int index = 1; int index = 1;
while (index < 64 && input.Position < input.Length) while (index < 64 && input.Position < input.Length)
{ {
int code = DecodeToken (reader, info.Tree2); int code = CbgReader.DecodeToken (reader, Tree2);
if (0 == code) if (0 == code)
break; break;
if (0xF == code) if (0xF == code)
@ -544,10 +550,10 @@ namespace GameRes.Formats.BGI
++index; ++index;
} }
} }
if (8 == info.BPP) if (8 == BPP)
DecodeGrayscale (color_data, info.DCT, info.Width, dst); DecodeGrayscale (color_data, dst);
else else
DecodeRGB (color_data, info.DCT, info.Width, dst); DecodeRGB (color_data, dst);
} }
} }
@ -563,16 +569,16 @@ namespace GameRes.Formats.BGI
short[,] YCbCr_block { get { return s_YCbCr_block.Value; } } short[,] YCbCr_block { get { return s_YCbCr_block.Value; } }
void DecodeRGB (short[] data, float[,] dct, int width, int dst) void DecodeRGB (short[] data, int dst)
{ {
int block_count = width / 8; int block_count = Width / 8;
for (int i = 0; i < block_count; ++i) for (int i = 0; i < block_count; ++i)
{ {
int src = i * 64; int src = i * 64;
for (int channel = 0; channel < 3; ++channel) for (int channel = 0; channel < 3; ++channel)
{ {
DecodeDCT (channel, data, src, dct); DecodeDCT (channel, data, src);
src += width * 8; src += Width * 8;
} }
for (int j = 0; j < 64; ++j) for (int j = 0; j < 64; ++j)
{ {
@ -591,46 +597,46 @@ namespace GameRes.Formats.BGI
int y = j >> 3; int y = j >> 3;
int x = j & 7; int x = j & 7;
int p = (y * width + x) * 4; int p = (y * Width + x) * 4;
m_output[dst+p] = FloatToByte (b); Output[dst+p] = FloatToByte (b);
m_output[dst+p+1] = FloatToByte (g); Output[dst+p+1] = FloatToByte (g);
m_output[dst+p+2] = FloatToByte (r); Output[dst+p+2] = FloatToByte (r);
} }
dst += 32; dst += 32;
} }
} }
void DecodeGrayscale (short[] data, float[,] dct, int width, int dst) void DecodeGrayscale (short[] data, int dst)
{ {
int src = 0; int src = 0;
int block_count = width / 8; int block_count = Width / 8;
for (int i = 0; i < block_count; ++i) for (int i = 0; i < block_count; ++i)
{ {
DecodeDCT (0, data, src, dct); DecodeDCT (0, data, src);
src += 64; src += 64;
for (int j = 0; j < 64; ++j) for (int j = 0; j < 64; ++j)
{ {
int y = j >> 3; int y = j >> 3;
int x = j & 7; int x = j & 7;
int p = (y * width + x) * 4; int p = (y * Width + x) * 4;
m_output[dst+p] = (byte)YCbCr_block[j,0]; Output[dst+p] = (byte)YCbCr_block[j,0];
m_output[dst+p+1] = (byte)YCbCr_block[j,0]; Output[dst+p+1] = (byte)YCbCr_block[j,0];
m_output[dst+p+2] = (byte)YCbCr_block[j,0]; Output[dst+p+2] = (byte)YCbCr_block[j,0];
} }
dst += 32; dst += 32;
} }
} }
void UnpackAlpha (DecodeInfo info, int offset) public void UnpackAlpha (int offset)
{ {
using (var data = new MemoryStream (info.Input, offset, info.Input.Length-offset)) using (var data = new MemoryStream (this.Input, offset, Input.Length-offset))
using (var input = new BinaryReader (data)) using (var input = new BinaryReader (data))
{ {
if (1 != input.ReadInt32()) if (1 != input.ReadInt32())
return; return;
int dst = 3; int dst = 3;
int ctl = 1 << 1; int ctl = 1 << 1;
while (dst < m_output.Length) while (dst < Output.Length)
{ {
ctl >>= 1; ctl >>= 1;
if (1 == ctl) if (1 == ctl)
@ -647,30 +653,30 @@ namespace GameRes.Formats.BGI
y |= -8; y |= -8;
int count = ((v >> 9) & 0x7F) + 3; int count = ((v >> 9) & 0x7F) + 3;
int src = dst + (x + y * info.Width) * 4; int src = dst + (x + y * Width) * 4;
if (src < 0 || src >= m_output.Length) if (src < 0 || src >= Output.Length)
return; return;
for (int i = 0; i < count; ++i) for (int i = 0; i < count; ++i)
{ {
m_output[dst] = m_output[src]; Output[dst] = Output[src];
src += 4; src += 4;
dst += 4; dst += 4;
} }
} }
else else
{ {
m_output[dst] = input.ReadByte(); Output[dst] = input.ReadByte();
dst += 4; dst += 4;
} }
} }
info.HasAlpha = true; HasAlpha = true;
} }
} }
ThreadLocal<float[,]> s_tmp = new ThreadLocal<float[,]> (() => new float[8,8]); ThreadLocal<float[,]> s_tmp = new ThreadLocal<float[,]> (() => new float[8,8]);
void DecodeDCT (int channel, short[] data, int src, float[,] dct_table) void DecodeDCT (int channel, short[] data, int src)
{ {
float v1, v2, v3, v4, v5, v6, v7, v8; float v1, v2, v3, v4, v5, v6, v7, v8;
float v9, v10, v11, v12, v13, v14, v15, v16, v17; float v9, v10, v11, v12, v13, v14, v15, v16, v17;
@ -683,7 +689,7 @@ namespace GameRes.Formats.BGI
&& 0 == data[src + 32 + i] && 0 == data[src + 40 + i] && 0 == data[src + 48 + i] && 0 == data[src + 32 + i] && 0 == data[src + 40 + i] && 0 == data[src + 48 + i]
&& 0 == data[src + 56 + i]) && 0 == data[src + 56 + i])
{ {
var t = data[src + i] * dct_table[d, i]; var t = data[src + i] * DCT[d, i];
tmp[0,i] = t; tmp[0,i] = t;
tmp[1,i] = t; tmp[1,i] = t;
tmp[2,i] = t; tmp[2,i] = t;
@ -695,14 +701,14 @@ namespace GameRes.Formats.BGI
continue; continue;
} }
v1 = data[src + i] * dct_table[d,i]; v1 = data[src + i] * DCT[d,i];
v2 = data[src + 8 + i] * dct_table[d, 8 + i]; v2 = data[src + 8 + i] * DCT[d, 8 + i];
v3 = data[src + 16 + i] * dct_table[d, 16 + i]; v3 = data[src + 16 + i] * DCT[d, 16 + i];
v4 = data[src + 24 + i] * dct_table[d, 24 + i]; v4 = data[src + 24 + i] * DCT[d, 24 + i];
v5 = data[src + 32 + i] * dct_table[d, 32 + i]; v5 = data[src + 32 + i] * DCT[d, 32 + i];
v6 = data[src + 40 + i] * dct_table[d, 40 + i]; v6 = data[src + 40 + i] * DCT[d, 40 + i];
v7 = data[src + 48 + i] * dct_table[d, 48 + i]; v7 = data[src + 48 + i] * DCT[d, 48 + i];
v8 = data[src + 56 + i] * dct_table[d, 56 + i]; v8 = data[src + 56 + i] * DCT[d, 56 + i];
v10 = v1 + v5; v10 = v1 + v5;
v11 = v1 - v5; v11 = v1 - v5;