1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188
|
public class OCVWrapper
{
private static ImageCodecInfo getCodecForstring(string type)
{
ImageCodecInfo[] info = ImageCodecInfo.GetImageEncoders();
for (int i = 0; i < info.Length; i++)
{
string EnumName = type.ToString();
if (info[i].FormatDescription.Equals(EnumName))
{
return info[i];
}
}
return null;
}
public static byte[] ToMultiTiff(List<byte[]> Imgs)
{
MemoryStream tmpSave = new MemoryStream();
System.Drawing.Imaging.Encoder encoder = System.Drawing.Imaging.Encoder.SaveFlag;
ImageCodecInfo encoderInfo = getCodecForstring("TIFF");
int i = 0;
try
{
if (Imgs != null)
{
if (Imgs.Count < 1)
{
throw new Exception("Array d'image vide");
}
else if (Imgs.Count == 1)
{
EncoderParameters iparams = new EncoderParameters(1);
System.Drawing.Imaging.Encoder iparam = System.Drawing.Imaging.Encoder.Compression;
EncoderParameter iparamPara = new EncoderParameter(iparam, (long)(EncoderValue.CompressionNone));
iparams.Param[0] = iparamPara;
MemoryStream ms = new MemoryStream(Imgs[0]);
Bitmap bmp = new Bitmap(ms);
bmp.Save(tmpSave, encoderInfo, iparams);
}
else if (Imgs.Count > 1)
{
EncoderParameters encoderParameters = new EncoderParameters(2);
encoderParameters.Param[0] = new EncoderParameter(encoder, (long)EncoderValue.MultiFrame);
encoderParameters.Param[1] = new EncoderParameter(encoder, (long)EncoderValue.CompressionNone);
// encoderParameters.Param[0] = new EncoderParameter(encoder, 18);
// encoderParameters.Param[1] = new EncoderParameter(encoder, 6);
EncoderParameters encoderFrameParameters = new EncoderParameters(1);
encoderFrameParameters.Param[0] = new EncoderParameter(encoder, (long)EncoderValue.FrameDimensionPage);
// encoderFrameParameters.Param[0] = new EncoderParameter(encoder, 23);
EncoderParameters encoderParameterFlush = new EncoderParameters(1);
encoderParameterFlush.Param[0] = new EncoderParameter(encoder, (long)EncoderValue.Flush);
// encoderParameterFlush.Param[0] = new EncoderParameter(encoder, 20);
byte[] a = new byte[Imgs[0].Length];
Imgs[0].CopyTo(a, 0);
MemoryStream ms_final = new MemoryStream(a);
// Save the first frame of the multi page tiff
Bitmap firstImage = new Bitmap(ms_final);
firstImage.Save(tmpSave, encoderInfo, encoderParameters);
//firstImage.Save(tmpSave, ImageFormat.Tiff);
// Add the remining images to the tiff
for (i = 1; i < Imgs.Count; i++)
{
byte[] tmpbyte = new byte[Imgs[i].Length];
Imgs[i].CopyTo(tmpbyte, 0);
MemoryStream ms_tmp = new MemoryStream(tmpbyte);
Bitmap img = new Bitmap(ms_tmp);
firstImage.SaveAdd(img, encoderFrameParameters);
}
// Close out the file
firstImage.SaveAdd(encoderParameterFlush);
}
}
else
{
throw new Exception("Array null");
}
}
catch (System.Exception ex)
{
throw new Exception($"Erreur Création Multi tiff page {i.ToString()}", ex);
}
return tmpSave.ToArray();
}
public static List<byte[]> ReadTiff(byte[] byteImg)
{
List<byte[]> ImgStreams = new List<byte[]>();
string ErrorMessage = "";
int idx = 0;
int count = 0;
try
{
if (byteImg == null || byteImg.Length <= 0) throw new Exception("Empty Image");
using (Bitmap bitmap = (Bitmap)Image.FromStream(new MemoryStream(byteImg)))
{
count = bitmap.GetFrameCount(FrameDimension.Page);
if (count > 0)
{
for (idx = 0; idx < count; idx++)
{
bitmap.SelectActiveFrame(FrameDimension.Page, idx);
MemoryStream byteStream = new MemoryStream();
bitmap.Save(byteStream, ImageFormat.Tiff);
byte[] tmp = new byte[byteStream.ToArray().LongLength];
byteStream.ToArray().CopyTo(tmp,0);
ImgStreams.Add(tmp);
}
}
else
{
throw new Exception("Document bad Format : 0 pages");
}
bitmap.Dispose();
}
}
catch (Exception ex)
{
ErrorMessage = $"NBPage [{ count}] Last page {idx} Message Exception : [{ex.Message}]";
throw new Exception(ErrorMessage, ex);
}
return ImgStreams;
}
[DllImport("Dll1.dll")]
private static extern IntPtr ScaleAndCompress(IntPtr buf, int nb_byte, int MaxHeight, int MaxWidth, int flaginterp, ref ulong sizeFinalImg);
public static byte[] GenViewerImage(byte[] file , int MaxHeight, int MaxWidth )
{
List<byte[]> bytePages = new List<byte[]>();
var a = new OCVWrapper();
List<byte[]> ImgsByte = ReadTiff(file);
foreach (byte[] Img in ImgsByte)
{
unsafe
{
IntPtr unmanagedPointer = Marshal.AllocHGlobal(Img.Length);
Marshal.Copy(Img, 0, unmanagedPointer, Img.Length);
ulong sizeFinalImg = 0;
IntPtr unmanagedScaleAndCompressed = ScaleAndCompress(unmanagedPointer, Img.Length, MaxHeight, MaxWidth, 3, ref sizeFinalImg);
Marshal.FreeHGlobal(unmanagedPointer);
byte[] tmp = new byte[sizeFinalImg];
Marshal.Copy(unmanagedScaleAndCompressed, tmp, 0, (int)sizeFinalImg);
bytePages.Add(tmp);
}
}
return ToMultiTiff(bytePages);
}
} |
Partager