解析 IFF图形结构代码,CSharp代码库,德仔网

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【CSharp】解析 IFF图形结构
作者:zgke / 发布于2014/7/29/ 410
图形数据区的数据存放也和别的图形文件有天地之区别。例如 256色图形第1个字节放的是前8个相素的最第位后面依次类推。知道相素的最后一个最底位完毕并补码后才是相素的底2位。也就是说宽为16的图形第1-2字节是放最低位 3-4 放的低2位 5-6为3位。。。一直到 15-16 为最高位 24位色的也是这样就是先是 R数据然后是G流最后是B

	//使用方法

	 //显示RSB文件
	 ImageIFF _Iff = new ImageIFF(@"D:/temp/4.IFF");
	 pictureBox1.Image = _Iff.Image;

	
	 //保存
	 ImageIFF _Iff = new ImageIFF();
	 _Iff.Image = (Bitmap)Image.FromFile(@"d:/TEMP/1.bmp");
	 _Iff.SaveImage(@"d:/temp/ok.IFF");

	

	/// <summary>
	 /// IFF文件结构
	 /// zgke@sina.com
	 /// QQ:116149
	 /// </summary>
	 public class ImageIFF
	 {
	 private uint m_Heard = 0x4d524f46; //FROM
	 private uint m_FileSize = 0;
	 private uint m_FileType = 0x4d424c49; //ILBM

	 private IList<ImageIFFOfANNO> m_ANNO = new List<ImageIFFOfANNO>();

	 private ImageIffOfBMHD m_BMHD = new ImageIffOfBMHD();

	 private ImageIffOfCMAP m_CMAP = new ImageIffOfCMAP();

	 /// <summary>
	 /// 图形区域
	 /// </summary>
	 private Bitmap m_Bitmap;

	 /// <summary>
	 /// 描述字段
	 /// </summary>
	 public IList<ImageIFFOfANNO> ANNO { get { return m_ANNO; } set { m_ANNO = value; } }

	 /// <summary>
	 /// 图形区域
	 /// </summary>
	 public Bitmap Image { get { return m_Bitmap; } set { m_Bitmap = value; } }

	 public ImageIFF()
	 {
	 }

	 public ImageIFF(string p_FileName)
	 {
	 if (!File.Exists(p_FileName)) throw new Exception("文件不存在！");
	 byte[] _Bytes = File.ReadAllBytes(p_FileName);
	 if (BitConverter.ToInt32(_Bytes, 0) != m_Heard) throw new Exception("文件不是IFF文件！");
	 m_FileSize = BytesToUint(_Bytes, 4);
	 if (m_FileSize != _Bytes.Length - 8) throw new Exception("文件大小不正确！");
	 if (BitConverter.ToInt32(_Bytes, 8) != m_FileType) throw new Exception("文件格式不正确！");
	 LoadData(_Bytes, 12);
	 }

	 /// <summary>
	 /// 获取数据
	 /// </summary>
	 /// <param name="p_FileBytes"></param>
	 /// <param name="p_Index">开始位置</param>
	 private void LoadData(byte[] p_FileBytes, uint p_Index)
	 {
	 if (p_Index >= p_FileBytes.Length) return;
	 uint _ReadIndex = p_Index + 4;
	 string _TypeText = Encoding.ASCII.GetString(p_FileBytes, (int)p_Index, 4);
	 switch (_TypeText)
	 {
	 case "ANNO": //描述表
	 m_ANNO.Add(new ImageIFFOfANNO(p_FileBytes, ref _ReadIndex));
	 break;
	 case "BMHD": //图形属性表
	 m_BMHD = new ImageIffOfBMHD(p_FileBytes, ref _ReadIndex);
	 break;
	 case "CMAP": //颜色表
	 m_CMAP = new ImageIffOfCMAP(p_FileBytes, ref _ReadIndex);
	 break;
	 case "BODY": //图形区域
	 LoadImage(p_FileBytes, ref _ReadIndex);
	 break;
	 }
	 LoadData(p_FileBytes, _ReadIndex);
	 }

	 /// <summary>
	 /// 获取图形数据
	 /// </summary>
	 /// <param name="p_FileBytes"></param>
	 /// <param name="p_ReadIndex"></param>
	 private void LoadImage(byte[] p_FileBytes, ref uint p_ReadIndex)
	 {
	 uint _Size = ImageIFF.BytesToUint(p_FileBytes, (int)p_ReadIndex);
	 p_ReadIndex += 4;
	 m_Bitmap = new Bitmap(m_BMHD.Width, m_BMHD.Height, m_BMHD.Pixel);
	 BitmapData _BitmapData = m_Bitmap.LockBits(new Rectangle(0, 0, m_Bitmap.Width, m_Bitmap.Height), ImageLockMode.ReadWrite, m_Bitmap.PixelFormat);
	 byte[] _WriteBytes = new byte[_BitmapData.Stride * _BitmapData.Height];
	 uint _ReadStride = _Size / (uint)_BitmapData.Height / 8;
	 int _WriteIndex = 0;
	 byte[] _ReadBytes = new byte[_Size / (uint)_BitmapData.Height];
	 int _ReadBitArray = (int)_ReadStride * 8;

	 switch (m_Bitmap.PixelFormat)
	 {
	 default:
	 throw new Exception("未实现");
	 case PixelFormat.Format8bppIndexed:
	 for (int i = 0; i != _BitmapData.Height; i++)
	 {
	 _WriteIndex = i * _BitmapData.Stride;
	 Array.Copy(p_FileBytes, p_ReadIndex, _ReadBytes, 0, _ReadBytes.Length); //复制一行数据到缓冲区
	 p_ReadIndex += (uint)_ReadBytes.Length; //定义到下一行获取的位置
	 System.Collections.BitArray _ReadArray = new System.Collections.BitArray(_ReadBytes); //1是true 0是false
	 System.Collections.BitArray _WriteArray = new System.Collections.BitArray(new byte[] { 0 }); //1是true 0是false

	 for (int z = 0; z != _BitmapData.Width; z++)
	 {
	 int _ReadIndex = ((z / 8) * 8) + 7 - (z % 8); //获取顺序为 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 23
	 _WriteArray[0] = _ReadArray[_ReadIndex];
	 _WriteArray[1] = _ReadArray[_ReadBitArray + _ReadIndex];
	 _WriteArray[2] = _ReadArray[(_ReadBitArray * 2) + _ReadIndex];
	 _WriteArray[3] = _ReadArray[(_ReadBitArray * 3) + _ReadIndex];
	 _WriteArray[4] = _ReadArray[(_ReadBitArray * 4) + _ReadIndex];
	 _WriteArray[5] = _ReadArray[(_ReadBitArray * 5) + _ReadIndex];
	 _WriteArray[6] = _ReadArray[(_ReadBitArray * 6) + _ReadIndex];
	 _WriteArray[7] = _ReadArray[(_ReadBitArray * 7) + _ReadIndex];
	 _WriteArray.CopyTo(_WriteBytes, _WriteIndex + z);
	 }
	 }
	 #region 设置颜色表
	 ColorPalette _Palette = m_Bitmap.Palette;
	 for (int i = 0; i != m_CMAP.ColorList.Length; i++)
	 {
	 _Palette.Entries[i] = m_CMAP.ColorList[i];
	 }
	 m_Bitmap.Palette = _Palette;
	 #endregion
	 break;
	 case PixelFormat.Format24bppRgb:
	 int _Stride = _ReadBitArray / 3; //行内便宜 也就是行的点数的 (X/16)*16+(X%16==0?0:16);
	 _ReadBitArray = (int)_Size / _BitmapData.Height / 3 * 8; //所有颜色分量后的色彩位置 也就是所有行的位置
	 for (int i = 0; i != _BitmapData.Height; i++)
	 {
	 _WriteIndex = i * _BitmapData.Stride;
	 Array.Copy(p_FileBytes, p_ReadIndex, _ReadBytes, 0, _ReadBytes.Length); //复制一行数据到缓冲区
	 p_ReadIndex += (uint)_ReadBytes.Length; //定义到下一行获取的位置
	 System.Collections.BitArray _ReadArray = new System.Collections.BitArray(_ReadBytes); //1是true 0是false
	 System.Collections.BitArray _WriteRedArray = new System.Collections.BitArray(new byte[] { 0 }); //1是true 0是false
	 System.Collections.BitArray _WriteGreenArray = new System.Collections.BitArray(new byte[] { 0 }); //1是true 0是false
	 System.Collections.BitArray _WriteBlueArray = new System.Collections.BitArray(new byte[] { 0 }); //1是true 0是false

	 for (int z = 0; z != _BitmapData.Width; z++)
	 {
	 int _ReadIndex = ((z / 8) * 8) + 7 - (z % 8); //获取顺序为 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 23
	 _WriteRedArray[0] = _ReadArray[_ReadIndex];
	 _WriteRedArray[1] = _ReadArray[_Stride + _ReadIndex];
	 _WriteRedArray[2] = _ReadArray[(_Stride * 2) + _ReadIndex];
	 _WriteRedArray[3] = _ReadArray[(_Stride * 3) + _ReadIndex];
	 _WriteRedArray[4] = _ReadArray[(_Stride * 4) + _ReadIndex];
	 _WriteRedArray[5] = _ReadArray[(_Stride * 5) + _ReadIndex];
	 _WriteRedArray[6] = _ReadArray[(_Stride * 6) + _ReadIndex];
	 _WriteRedArray[7] = _ReadArray[(_Stride * 7) + _ReadIndex]; //红色

	 _WriteGreenArray[0] = _ReadArray[_ReadBitArray + _ReadIndex];
	 _WriteGreenArray[1] = _ReadArray[_ReadBitArray + _Stride + _ReadIndex];
	 _WriteGreenArray[2] = _ReadArray[_ReadBitArray + (_Stride * 2) + _ReadIndex];
	 _WriteGreenArray[3] = _ReadArray[_ReadBitArray + (_Stride * 3) + _ReadIndex];
	 _WriteGreenArray[4] = _ReadArray[_ReadBitArray + (_Stride * 4) + _ReadIndex];
	 _WriteGreenArray[5] = _ReadArray[_ReadBitArray + (_Stride * 5) + _ReadIndex];
	 _WriteGreenArray[6] = _ReadArray[_ReadBitArray + (_Stride * 6) + _ReadIndex];
	 _WriteGreenArray[7] = _ReadArray[_ReadBitArray + (_Stride * 7) + _ReadIndex]; //绿

	 _WriteBlueArray[0] = _ReadArray[_ReadBitArray * 2 + _ReadIndex];
	 _WriteBlueArray[1] = _ReadArray[_ReadBitArray * 2 + _Stride + _ReadIndex];
	 _WriteBlueArray[2] = _ReadArray[_ReadBitArray * 2 + (_Stride * 2) + _ReadIndex];
	 _WriteBlueArray[3] = _ReadArray[_ReadBitArray * 2 + (_Stride * 3) + _ReadIndex];
	 _WriteBlueArray[4] = _ReadArray[_ReadBitArray * 2 + (_Stride * 4) + _ReadIndex];
	 _WriteBlueArray[5] = _ReadArray[_ReadBitArray * 2 + (_Stride * 5) + _ReadIndex];
	 _WriteBlueArray[6] = _ReadArray[_ReadBitArray * 2 + (_Stride * 6) + _ReadIndex];
	 _WriteBlueArray[7] = _ReadArray[_ReadBitArray * 2 + (_Stride * 7) + _ReadIndex]; //蓝

	 _WriteRedArray.CopyTo(_WriteBytes, _WriteIndex + z * 3 + 2);
	 _WriteGreenArray.CopyTo(_WriteBytes, _WriteIndex + z * 3 + 1);
	 _WriteBlueArray.CopyTo(_WriteBytes, _WriteIndex + z * 3);
	 }

	 }
	 break;
	 }
	 Marshal.Copy(_WriteBytes, 0, _BitmapData.Scan0, _WriteBytes.Length);
	 m_Bitmap.UnlockBits(_BitmapData);

	 }

	 /// <summary>
	 /// 保存数据到文件
	 /// </summary>
	 /// <param name="p_File"></param>
	 public void SaveImage(string p_File)
	 {
	 if (m_Bitmap == null) return;
	 m_ANNO.Add(new ImageIFFOfANNO("IFF-File C#ImageIFF zgke@sina.com"));
	 System.IO.File.WriteAllBytes(p_File, GetFileBytes());
	 }

	 /// <summary>
	 /// 保存图形
	 /// </summary>
	 /// <returns></returns>
	 private byte[] GetFileBytes()
	 {
	 MemoryStream _Stream = new MemoryStream();
	 _Stream.Write(BitConverter.GetBytes(m_Heard), 0, 4);
	 _Stream.Write(new byte[] { 0, 0, 0, 0 }, 0, 4);
	 _Stream.Write(BitConverter.GetBytes(m_FileType), 0, 4);
	 byte[] _WriteBytes = new byte[0];
	 for (int i = 0; i != m_ANNO.Count; i++)
	 {
	 _WriteBytes = m_ANNO[i].GetBytes();
	 _Stream.Write(_WriteBytes, 0, _WriteBytes.Length);
	 }
	 _WriteBytes = m_BMHD.GetBytes(m_Bitmap);
	 _Stream.Write(_WriteBytes, 0, _WriteBytes.Length);

	 switch (m_Bitmap.PixelFormat)
	 {
	 case PixelFormat.Format8bppIndexed:
	 _Stream.Write(new byte[] { 0x43, 0x4D, 0x41, 0x50 }, 0, 4);
	 _Stream.Write(ImageIFF.UintToBytes((uint)768), 0, 4);
	 for (int i = 0; i != 256; i++)
	 {
	 _Stream.Write(new byte[] { m_Bitmap.Palette.Entries[i].R, m_Bitmap.Palette.Entries[i].G, m_Bitmap.Palette.Entries[i].B }, 0, 3);
	 }
	 break;
	 default:
	 break;
	 }

	 byte[] _ImageBytes = SaveImage();
	 _Stream.Write(new byte[] { 0x42, 0x4F, 0x44, 0x59 }, 0, 4);
	 _Stream.Write(ImageIFF.UintToBytes((uint)_ImageBytes.Length), 0, 4);
	 _Stream.Write(_ImageBytes, 0, _ImageBytes.Length);

	 m_FileSize = (uint)_Stream.Length - 8;
	 _Stream.Position = 4;
	 _Stream.Write(ImageIFF.UintToBytes(m_FileSize), 0, 4);
	 return _Stream.ToArray();
	 }

	 private byte[] SaveImage()
	 {
	 Bitmap _NewBitmap;
	 BitmapData _Data;
	 byte[] _ReadBytes;
	 int _ReadStride = 0;
	 int _WriteBitArray = 0;
	 int _Stride = 0;
	 int _WidthOne = 0;
	 int _WidthAll = 0;

	 byte[] _WriteBytes;
	 byte[] _WriteRowBytes;
	 int _ReadIndex = 0;
	 int _WriteIndex = 0;

	 switch (m_Bitmap.PixelFormat)
	 {
	 case PixelFormat.Format8bppIndexed:
	 _Data = m_Bitmap.LockBits(new Rectangle(0, 0, m_Bitmap.Width, m_Bitmap.Height), ImageLockMode.ReadOnly, PixelFormat.Format8bppIndexed);
	 _ReadBytes = new byte[_Data.Stride * _Data.Height];
	 _ReadStride = _Data.Stride;
	 Marshal.Copy(_Data.Scan0, _ReadBytes, 0, _ReadBytes.Length);
	 m_Bitmap.UnlockBits(_Data);
	 _WidthOne = (m_Bitmap.Width / 16) * 16 + (m_Bitmap.Width % 16 == 0 ? 0 : 16);
	 _WidthAll = _WidthOne * m_Bitmap.Height;
	 _WriteBytes = new byte[_WidthAll];
	 _WriteRowBytes = new byte[_WidthOne];
	 _WriteBitArray = _WidthOne;
	 for (int i = 0; i != m_Bitmap.Height; i++)
	 {
	 _ReadIndex = i * _ReadStride;
	 Array.Copy(_WriteBytes, i * _WriteRowBytes.Length, _WriteRowBytes, 0, _WriteRowBytes.Length);
	 System.Collections.BitArray _WriteArray = new System.Collections.BitArray(_WriteRowBytes);

	 for (int z = 0; z != m_Bitmap.Width; z++)
	 {
	 System.Collections.BitArray _ColorArray = new System.Collections.BitArray(new byte[] { _ReadBytes[_ReadIndex + z] });

	 _WriteIndex = ((z / 8) * 8) + 7 - (z % 8); //获取顺序为 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 23
	 _WriteArray[_WriteIndex] = _ColorArray[0];
	 _WriteArray[_WriteBitArray + _WriteIndex] = _ColorArray[1];
	 _WriteArray[(_WriteBitArray * 2) + _WriteIndex] = _ColorArray[2];
	 _WriteArray[(_WriteBitArray * 3) + _WriteIndex] = _ColorArray[3];
	 _WriteArray[(_WriteBitArray * 4) + _WriteIndex] = _ColorArray[4];
	 _WriteArray[(_WriteBitArray * 5) + _WriteIndex] = _ColorArray[5];
	 _WriteArray[(_WriteBitArray * 6) + _WriteIndex] = _ColorArray[6];
	 _WriteArray[(_WriteBitArray * 7) + _WriteIndex] = _ColorArray[7];
	 }
	 _WriteArray.CopyTo(_WriteRowBytes, 0);
	 Array.Copy(_WriteRowBytes, 0, _WriteBytes, i * _WriteRowBytes.Length, _WriteRowBytes.Length);
	 }
	 return _WriteBytes;
	 break;
	 default:
	 _NewBitmap = new Bitmap(m_Bitmap.Width, m_Bitmap.Height, PixelFormat.Format24bppRgb);
	 Graphics _Graphics = Graphics.FromImage(_NewBitmap);
	 _Graphics.DrawImage(m_Bitmap, new Rectangle(0, 0, m_Bitmap.Width, m_Bitmap.Height));
	 _Graphics.Dispose();
	 _Data = _NewBitmap.LockBits(new Rectangle(0, 0, m_Bitmap.Width, m_Bitmap.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
	 _ReadBytes = new byte[_Data.Stride * _Data.Height];
	 _ReadStride = _Data.Stride;
	 Marshal.Copy(_Data.Scan0, _ReadBytes, 0, _ReadBytes.Length);
	 _NewBitmap.UnlockBits(_Data);

	 _WidthOne = (_NewBitmap.Width / 16) * 16 + (_NewBitmap.Width % 16 == 0 ? 0 : 16);
	 _WidthAll = _WidthOne * 3 * _NewBitmap.Height;

	 _WriteBytes = new byte[_WidthAll];
	 _WriteRowBytes = new byte[_WidthOne * 3];
	 _ReadIndex = 0;
	 _WriteIndex = 0;
	 _WriteBitArray = _WidthOne * 8;
	 _Stride = _WidthOne;
	 for (int i = 0; i != _NewBitmap.Height; i++)
	 {
	 _ReadIndex = i * _ReadStride;
	 Array.Copy(_WriteBytes, i * _WriteRowBytes.Length, _WriteRowBytes, 0, _WriteRowBytes.Length);
	 System.Collections.BitArray _WriteArray = new System.Collections.BitArray(_WriteRowBytes);

	 for (int z = 0; z != _NewBitmap.Width; z++)
	 {
	 byte[] _Color = new byte[] { _ReadBytes[_ReadIndex + (z * 3) + 2], _ReadBytes[_ReadIndex + (z * 3) + 1], _ReadBytes[_ReadIndex + (z * 3)] };
	 System.Collections.BitArray _ColorArray = new System.Collections.BitArray(_Color);

	 _WriteIndex = ((z / 8) * 8) + 7 - (z % 8); //获取顺序为 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 23
	 _WriteArray[_WriteIndex] = _ColorArray[0];
	 _WriteArray[_Stride + _WriteIndex] = _ColorArray[1];
	 _WriteArray[(_Stride * 2) + _WriteIndex] = _ColorArray[2];
	 _WriteArray[(_Stride * 3) + _WriteIndex] = _ColorArray[3];
	 _WriteArray[(_Stride * 4) + _WriteIndex] = _ColorArray[4];
	 _WriteArray[(_Stride * 5) + _WriteIndex] = _ColorArray[5];
	 _WriteArray[(_Stride * 6) + _WriteIndex] = _ColorArray[6];
	 _WriteArray[(_Stride * 7) + _WriteIndex] = _ColorArray[7]; //红色

	 _WriteArray[_WriteBitArray + _WriteIndex] = _ColorArray[8];
	 _WriteArray[_WriteBitArray + _Stride + _WriteIndex] = _ColorArray[9];
	 _WriteArray[_WriteBitArray + (_Stride * 2) + _WriteIndex] = _ColorArray[10];
	 _WriteArray[_WriteBitArray + (_Stride * 3) + _WriteIndex] = _ColorArray[11];
	 _WriteArray[_WriteBitArray + (_Stride * 4) + _WriteIndex] = _ColorArray[12];
	 _WriteArray[_WriteBitArray + (_Stride * 5) + _WriteIndex] = _ColorArray[13];
	 _WriteArray[_WriteBitArray + (_Stride * 6) + _WriteIndex] = _ColorArray[14];
	 _WriteArray[_WriteBitArray + (_Stride * 7) + _WriteIndex] = _ColorArray[15]; //绿

	 _WriteArray[_WriteBitArray * 2 + _WriteIndex] = _ColorArray[16];
	 _WriteArray[_WriteBitArray * 2 + _Stride + _WriteIndex] = _ColorArray[17];
	 _WriteArray[_WriteBitArray * 2 + (_Stride * 2) + _WriteIndex] = _ColorArray[18];
	 _WriteArray[_WriteBitArray * 2 + (_Stride * 3) + _WriteIndex] = _ColorArray[19];
	 _WriteArray[_WriteBitArray * 2 + (_Stride * 4) + _WriteIndex] = _ColorArray[20];
	 _WriteArray[_WriteBitArray * 2 + (_Stride * 5) + _WriteIndex] = _ColorArray[21];
	 _WriteArray[_WriteBitArray * 2 + (_Stride * 6) + _WriteIndex] = _ColorArray[22];
	 _WriteArray[_WriteBitArray * 2 + (_Stride * 7) + _WriteIndex] = _ColorArray[23]; //蓝

	 }

	 _WriteArray.CopyTo(_WriteRowBytes, 0);
	 Array.Copy(_WriteRowBytes, 0, _WriteBytes, i * _WriteRowBytes.Length, _WriteRowBytes.Length);
	 }
	 _NewBitmap.Dispose();
	 return _WriteBytes;
	 break;
	 }
	 return new byte[0];
	 }

	 #region 结构类
	 /// <summary>
	 /// ANNO描述字段
	 /// </summary>
	 public class ImageIFFOfANNO
	 {
	 public ImageIFFOfANNO(byte[] p_FileBytes, ref uint p_ReadIndex)
	 {
	 m_Size = ImageIFF.BytesToUint(p_FileBytes, (int)p_ReadIndex);
	 p_ReadIndex += 4;
	 m_Text = Encoding.Default.GetString(p_FileBytes, (int)p_ReadIndex, (int)m_Size);
	 p_ReadIndex += m_Size;
	 }

	 public ImageIFFOfANNO(string p_Txt)
	 {
	 Text = p_Txt;
	 }

	 public ImageIFFOfANNO()
	 {
	 }

	 private uint m_Size = 0;
	 private string m_Text = "";

	 public string Text
	 {
	 get
	 {
	 return m_Text;
	 }
	 set
	 {
	 m_Text = value;
	 }
	 }

	 /// <summary>
	 /// 获取对应的字节数
	 /// </summary>
	 /// <returns></returns>
	 public byte[] GetBytes()
	 {
	 if (m_Text.Length == 0) return new byte[0];
	 MemoryStream _Stream = new MemoryStream();
	 _Stream.Write(new byte[] { 0x41, 0x4E, 0x4E, 0x4F }, 0, 4);
	 byte[] _TextBytes = Encoding.Default.GetBytes(m_Text);
	 int _Count = _TextBytes.Length;
	 if (_TextBytes.Length % 2 != 0) _Count++;
	 byte[] _ValueBytes = ImageIFF.UintToBytes((uint)_Count);
	 _Stream.Write(_ValueBytes, 0, _ValueBytes.Length);
	 _Stream.Write(_TextBytes, 0, _TextBytes.Length);
	 if (_TextBytes.Length % 2 != 0) _Stream.Write(new byte[] { 0x20 }, 0, 1);
	 return _Stream.ToArray();
	 }
	 }

	 /// <summary>
	 /// 图形设置
	 /// </summary>
	 private class ImageIffOfBMHD
	 {
	 /// <summary>
	 /// 区域大小
	 /// </summary>
	 private uint m_Size = 20;

	 private ushort m_Width = 0;

	 private ushort m_Height = 0;

	 private ushort m_X = 0;

	 private ushort m_Y = 0;

	 private PixelFormat m_Pixel = PixelFormat.Format24bppRgb;

	 private byte m_Masking = 0;

	 private byte m_Compression = 0;

	 private byte m_Padl = 0;

	 private ushort m_TColor = 0;

	 private byte m_XAspect = 0;

	 private byte m_YAspect = 0;

	 private ushort m_PWidth = 0;

	 private ushort m_PHeight = 0;

	 /// <summary>
	 /// 0不压缩 1压缩
	 /// </summary>
	 public byte Compression { get { return m_Compression; } set { m_Compression = value; } }

	 /// <summary>
	 /// 宽
	 /// </summary>
	 public ushort Width { get { return m_Width; } set { m_Width = value; } }

	 /// <summary>
	 /// 高
	 /// </summary>
	 public ushort Height { get { return m_Height; } set { m_Height = value; } }

	 /// <summary>
	 /// 颜色数
	 /// </summary>
	 public PixelFormat Pixel { get { return m_Pixel; } set { m_Pixel = value; } }

	
	 public ImageIffOfBMHD()
	 {

	 }
	 public ImageIffOfBMHD(byte[] p_FileBytes, ref uint p_ReadIndex)
	 {
	 m_Size = ImageIFF.BytesToUint(p_FileBytes, (int)p_ReadIndex);
	 p_ReadIndex += 4;
	 m_Width = ImageIFF.BytesToShort(p_FileBytes, (int)p_ReadIndex);
	 p_ReadIndex += 2;
	 m_Height = ImageIFF.BytesToShort(p_FileBytes, (int)p_ReadIndex);
	 p_ReadIndex += 2;
	 m_X = ImageIFF.BytesToShort(p_FileBytes, (int)p_ReadIndex);
	 p_ReadIndex += 2;
	 m_Y = ImageIFF.BytesToShort(p_FileBytes, (int)p_ReadIndex);
	 p_ReadIndex += 2;
	 switch (p_FileBytes[p_ReadIndex])
	 {
	 case 8:
	 m_Pixel = PixelFormat.Format8bppIndexed;
	 break;
	 case 24:
	 m_Pixel = PixelFormat.Format24bppRgb;
	 break;
	 default:
	 throw new Exception("未实现！");
	 }
	 p_ReadIndex++;

	 m_Masking = p_FileBytes[p_ReadIndex];
	 p_ReadIndex++;

	 m_Compression = p_FileBytes[p_ReadIndex];
	 if (m_Compression != 0) throw new Exception("未实现RLE压缩的IFF图形");
	 p_ReadIndex++;
	 m_Padl = p_FileBytes[p_ReadIndex];
	 p_ReadIndex++;
	 m_TColor = ImageIFF.BytesToShort(p_FileBytes, (int)p_ReadIndex);
	 p_ReadIndex += 2;
	 m_XAspect = p_FileBytes[p_ReadIndex];
	 p_ReadIndex++;
	 m_YAspect = p_FileBytes[p_ReadIndex];
	 p_ReadIndex++;
	 m_PWidth = ImageIFF.BytesToShort(p_FileBytes, (int)p_ReadIndex); ;
	 p_ReadIndex += 2;
	 m_PHeight = ImageIFF.BytesToShort(p_FileBytes, (int)p_ReadIndex); ;
	 p_ReadIndex += 2;
	 }

	 /// <summary>
	 /// 根据图形获取数据集
	 /// </summary>
	 /// <param name="p_Bitmap"></param>
	 /// <returns></returns>
	 public byte[] GetBytes(Bitmap p_Bitmap)
	 {
	 if (p_Bitmap == null) return new byte[0];
	 MemoryStream _Stream = new MemoryStream();
	 _Stream.Write(new byte[] { 0x42, 0x4D, 0x48, 0x44 }, 0, 4);
	 _Stream.Write(new byte[] { 0, 0, 0, 0x14 }, 0, 4);
	 _Stream.Write(ImageIFF.UintToBytes((ushort)p_Bitmap.Width), 0, 2);
	 _Stream.Write(ImageIFF.UintToBytes((ushort)p_Bitmap.Height), 0, 2);
	 _Stream.Write(ImageIFF.UintToBytes(m_X), 0, 2);
	 _Stream.Write(ImageIFF.UintToBytes(m_Y), 0, 2);
	 switch (p_Bitmap.PixelFormat)
	 {
	 case PixelFormat.Format8bppIndexed:
	 _Stream.WriteByte(8);
	 break;
	 default:
	 _Stream.WriteByte(24);
	 break;
	 }
	 _Stream.WriteByte(0);
	 _Stream.WriteByte(0);
	 _Stream.WriteByte(0);
	 _Stream.Write(ImageIFF.UintToBytes(m_TColor), 0, 2);
	 _Stream.WriteByte(0);
	 _Stream.WriteByte(0);
	 _Stream.Write(ImageIFF.UintToBytes((ushort)p_Bitmap.Width), 0, 2);
	 _Stream.Write(ImageIFF.UintToBytes((ushort)p_Bitmap.Height), 0, 2);
	 return _Stream.ToArray();
	 }
	 }

	 /// <summary>
	 /// 颜色表
	 /// </summary>
	 private class ImageIffOfCMAP
	 {
	 /// <summary>
	 /// 区域大小
	 /// </summary>
	 private uint m_Size = 20;

	 /// <summary>
	 /// 颜色表
	 /// </summary>
	 private Color[] m_ColorList = new Color[256];

	 /// <summary>
	 /// 颜色表
	 /// </summary>
	 public Color[] ColorList { get { return m_ColorList; } set { m_ColorList = value; m_Size = (uint)m_ColorList.Length * 3; } }

	 public ImageIffOfCMAP()
	 {

	 }
	 public ImageIffOfCMAP(byte[] p_FileBytes, ref uint p_ReadIndex)
	 {
	 m_Size = ImageIFF.BytesToUint(p_FileBytes, (int)p_ReadIndex);
	 p_ReadIndex += 4;
	 int _Count = (int)m_Size / 3;
	 m_ColorList = new Color[_Count];
	 for (int i = 0; i != _Count; i++)
	 {
	 m_ColorList[i] = Color.FromArgb(p_FileBytes[p_ReadIndex], p_FileBytes[p_ReadIndex + 1], p_FileBytes[p_ReadIndex + 2]);
	 p_ReadIndex += 3;
	 }
	 }
	 }
	 #endregion

	 #region 数据转换
	 /// <summary>
	 /// 字节转换为UINT
	 /// </summary>
	 /// <param name="p_Value">字节数组</param>
	 /// <param name="p_Index">开始位置</param>
	 /// <returns></returns>
	 public static uint BytesToUint(byte[] p_Value, int p_Index)
	 {
	 byte[] _ValueBytes = new byte[4];
	 _ValueBytes[0] = p_Value[p_Index + 3];
	 _ValueBytes[1] = p_Value[p_Index + 2];
	 _ValueBytes[2] = p_Value[p_Index + 1];
	 _ValueBytes[3] = p_Value[p_Index];
	 return BitConverter.ToUInt32(_ValueBytes, 0);
	 }

	 /// <summary>
	 /// 获取反转的BYTES
	 /// </summary>
	 /// <param name="p_Value"></param>
	 /// <returns></returns>
	 public static byte[] UintToBytes(uint p_Value)
	 {
	 byte[] _ValueBytes = BitConverter.GetBytes(p_Value);
	 Array.Reverse(_ValueBytes);
	 return _ValueBytes;
	 }

	 /// <summary>
	 /// 字节转换为UINT
	 /// </summary>
	 /// <param name="p_Value">字节数组</param>
	 /// <param name="p_Index">开始位置</param>
	 /// <returns></returns>
	 public static ushort BytesToShort(byte[] p_Value, int p_Index)
	 {
	 byte[] _ValueBytes = new byte[2];
	 _ValueBytes[0] = p_Value[p_Index + 1];
	 _ValueBytes[1] = p_Value[p_Index];
	 return BitConverter.ToUInt16(_ValueBytes, 0);
	 }

	 /// <summary>
	 /// 获取反转的BYTES
	 /// </summary>
	 /// <param name="p_Value"></param>
	 /// <returns></returns>
	 public static byte[] UintToBytes(ushort p_Value)
	 {
	 byte[] _ValueBytes = BitConverter.GetBytes(p_Value);
	 Array.Reverse(_ValueBytes);
	 return _ValueBytes;
	 }
	 #endregion

	 }
试试其它关键字
　IFF图形　　　　IFF　
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