public IEnumerable <byte> Decompress(StructReader Reader)
{
List <byte> output = new List <byte>();
uint fileCount = Reader.ReadUInt32();
Dictionary <int, uint> rawSizeList = new Dictionary <int, uint>();
Dictionary <int, uint> compressedSizeList = new Dictionary <int, uint>();
for (int i = 0; i < fileCount; i++)
{
uint fileCompressedSize = Reader.ReadUInt32();
uint fileRawSize = Reader.ReadUInt32();
rawSizeList.Add(i, fileRawSize);
compressedSizeList.Add(i, fileCompressedSize);
}
for (int i = 0; i < fileCount; i++)
{
List <int> lmzBytes = new List <int>();
int totalcount = (int)compressedSizeList[i];
for (int j = 0; j < totalcount; j++)
{
lmzBytes.Add(Reader.ReadUInt16());
}
//解压lzw
/*byte[] re = unlzw(lmzBytes.ToArray());
* output.AddRange(re);*/
string str = LzwUtil.Decompress(lmzBytes);
foreach (var c in str)
{
output.Add((byte)c);
}
}
return(output);
}
public IEnumerable <byte> Decompress(StructReader Reader, string filename = "")
{
List <byte> output = new List <byte>();
uint fileCount = Reader.ReadUInt32();
Dictionary <int, uint> rawSizeList = new Dictionary <int, uint>();
Dictionary <int, uint> compressedSizeList = new Dictionary <int, uint>();
CZOutputInfo czOutputInfo = new CZOutputInfo();
czOutputInfo.filecount = fileCount;
czOutputInfo.TotalRawSize = 0;
czOutputInfo.TotalCompressedSize = 0;
for (int i = 0; i < fileCount; i++)
{
uint fileCompressedSize = Reader.ReadUInt32();
uint fileRawSize = Reader.ReadUInt32();
rawSizeList.Add(i, fileRawSize);
compressedSizeList.Add(i, fileCompressedSize);
czOutputInfo.TotalRawSize += fileRawSize;
czOutputInfo.TotalCompressedSize += fileCompressedSize;
czOutputInfo.blockinfo.Add(new CZBlockInfo()
{
BlockIndex = i, RawSize = fileRawSize, CompressedSize = fileCompressedSize
});
}
if (!string.IsNullOrEmpty(filename))
{
File.WriteAllText(filename + ".json", JsonConvert.SerializeObject(czOutputInfo, Formatting.Indented));
}
for (int i = 0; i < fileCount; i++)
{
List <int> lmzBytes = new List <int>();
int totalcount = (int)compressedSizeList[i];
for (int j = 0; j < totalcount; j++)
{
lmzBytes.Add(Reader.ReadUInt16());
}
//debug====
//List<byte> bytes = new List<byte>();
//foreach (var item in lmzBytes)
//{
// UInt16 bb = (UInt16)item;
// bytes.Add(BitConverter.GetBytes(bb)[0]);
// bytes.Add(BitConverter.GetBytes(bb)[1]);
//}
//File.WriteAllBytes(i + "lzw.bin", bytes.ToArray());
//List<byte> list = new List<byte>();
string str = LzwUtil.Decompress(lmzBytes);
foreach (var c in str)
{
output.Add((byte)c);
//list.Add((byte)c);
}
//debug====
//File.WriteAllBytes(i + "lzwde.bin", list.ToArray());
}
return(output);
}
//作者：Wetor
//时间：2019.1.18
public void PngToCZ1(string outfile)
{
CZOutputInfo czOutput = new CZOutputInfo();
string name = outfile.Replace(".png", "").Replace(".Png", "").Replace(".PNG", "") + ".json";
if (File.Exists(name))
{
czOutput = JsonConvert.DeserializeObject <CZOutputInfo>(File.ReadAllText(name));
}
Bitmap Picture = new Bitmap(File.Open(outfile, FileMode.Open));
StructWriter Writer = new StructWriter(File.Open(outfile + ".cz1", FileMode.Create));
CZ1Header header;
header.Signature = "CZ1";
header.HeaderLength = 0x10;
header.Width = (ushort)Picture.Width;
header.Heigth = (ushort)Picture.Height;
header.Colorbits = 4;
Writer.WriteStruct(ref header);
Writer.Seek(header.HeaderLength, SeekOrigin.Begin);
Pixel32_BGRA Pixel = new Pixel32_BGRA();
Pixel.R = 255;
Pixel.G = 255;
Pixel.B = 255;
//FF FF FF 00
//FF FF FF 18
//FF FF FF 26
//FF FF FF 35
//FF FF FF 45
//FF FF FF 55
//FF FF FF 65
//FF FF FF 75
//FF FF FF 85
//FF FF FF 96
//FF FF FF A7
//FF FF FF B8
//FF FF FF C9
//FF FF FF DB
//FF FF FF EC
//FF FF FF FF
Pixel.A = (byte)0x00; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0x18; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0x26; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0x35; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0x45; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0x55; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0x65; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0x75; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0x85; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0x96; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0xA7; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0xB8; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0xC9; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0xDB; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0xEC; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Pixel.A = (byte)0xFF; list.Add(Pixel.A);
Writer.WriteStruct(ref Pixel);
Queue <byte> queue = new Queue <byte>();
int i = 0;
for (int y = 0; y < Picture.Height; y++)
{
for (int x = 0; x < Picture.Width; x++)
{
byte tmp = color256to16(Picture.GetPixel(x, y).A);
//bytes11[i] = (byte)list.IndexOf(tmp);
queue.Enqueue((byte)list.IndexOf(tmp));
i++;
}
}
byte[] bytes2 = new byte[Picture.Height * Picture.Width];
for (int j = 0; j < bytes2.Length / 2; j++)
{
var low4bit = queue.Dequeue();
var high4bit = queue.Dequeue();
var b = (uint)(high4bit << 4) + (uint)low4bit;
bytes2[j] = (byte)b;
}
var ie = bytes2.ToList().GetEnumerator();
List <List <int> > out_list = LzwUtil.Compress(ie, 0xFEFD);
foreach (var item in out_list)
{
Console.WriteLine("add compressed count :" + item.Count);
Console.WriteLine(item.Count);
Console.WriteLine(LzwUtil.Decompress(item).Length);
}
//for (int k = 0; k < out_list.Count; k++)
//{
// Writer.Write(out_list[k].Count);
// Writer.Write(LzwUtil.Decompress(out_list[k]).Length);
// List<byte> bytes = new List<byte>();
// foreach (var item in out_list[k])
// {
// UInt16 bb = (UInt16)item;
// bytes.Add(BitConverter.GetBytes(bb)[0]);
// bytes.Add(BitConverter.GetBytes(bb)[1]);
// }
// //string tmp_str;
// System.Diagnostics.Debug.WriteLine("{0}", k);
//}
int file_num = out_list.Count;
Writer.Write(out_list.Count);
for (int k = 0; k < out_list.Count; k++)
{
//if (k >= out_list.Count - 1)
//{
// Writer.Write((UInt32)0);
// Writer.Write((UInt32)0);
//}
//else
//{
Writer.Write(out_list[k].Count);
Writer.Write(LzwUtil.Decompress(out_list[k]).Length);
//List<byte> bytes = new List<byte>();
//foreach (var item in out_list[k])
//{
// UInt16 bb = (UInt16)item;
// bytes.Add(BitConverter.GetBytes(bb)[0]);
// bytes.Add(BitConverter.GetBytes(bb)[1]);
//}
//string tmp_str;
System.Diagnostics.Debug.WriteLine("{0}", k);
//}
}
//Writer.Write(czOutput.filecount);
//for (int k = 0; k < czOutput.filecount; k++)
//{
// if (k >= out_list.Count - 1)
// {
// Writer.Write((UInt32)0);
// Writer.Write((UInt32)0);
// }
// else
// {
// Writer.Write(out_list[k].Count);
// Writer.Write(LzwUtil.Decompress(out_list[k]).Length);
// //List<byte> bytes = new List<byte>();
// //foreach (var item in out_list[k])
// //{
// // UInt16 bb = (UInt16)item;
// // bytes.Add(BitConverter.GetBytes(bb)[0]);
// // bytes.Add(BitConverter.GetBytes(bb)[1]);
// //}
// //string tmp_str;
// System.Diagnostics.Debug.WriteLine("{0}", k);
// }
//}
uint totalsize_new = 0x10 + 4 * 16 + 4 + (uint)file_num * 4 * 2;
uint totalsize_org = 0x10 + 4 * 16 + 4 + czOutput.filecount * 4 * 2;
for (int k = 0; k < out_list.Count; k++)
{
for (int kk = 0; kk < out_list[k].Count; kk++)
{
Writer.Write((UInt16)out_list[k][kk]);
totalsize_new += 2;
}
}
totalsize_org += czOutput.TotalCompressedSize * 2;
int diff = (int)(totalsize_org - totalsize_new);
if (diff > 0)
{
diff = diff / 2;
for (uint j = 0; j < diff; j++)
{
Writer.Write((UInt16)0);
}
}
else
{
Console.WriteLine("超长");
}
//int p = 0;
//foreach (var blockinfo in czOutput.blockinfo)
//{
// if (out_list.Count - 1 >= p)
// {
// for (int kk = 0; kk < out_list[p].Count; kk++)
// {
// Writer.Write((UInt16)out_list[p][kk]);
// }
// if (out_list[p].Count == blockinfo.CompressedSize)
// {
// Console.WriteLine("符合");
// }
// else
// {
// Int64 compressedcount = (Int64)out_list[p].Count - (Int64)blockinfo.CompressedSize;
// compressedcount = Math.Abs(compressedcount);
// Console.WriteLine("不符合补0-" + compressedcount);
// for (Int64 pp = 0; pp < compressedcount; pp++)
// {
// Writer.Write((UInt16)0);
// }
// }
// }
// else
// {
// Console.WriteLine("不符合补0-" + blockinfo.CompressedSize);
// //整块补0
// for (Int64 pp = 0; pp < blockinfo.CompressedSize; pp++)
// {
// Writer.Write((UInt16)0);
// }
// }
// p++;
//}
Writer.Close();
}