// Token: 0x06000207 RID: 519 RVA: 0x0000D01C File Offset: 0x0000B21C
public unsafe void CodeImage(IntPtr scan0, Rectangle scanArea, Size imageSize, PixelFormat format, Stream outStream)
{
lock (this._imageProcessLock)
{
byte *ptr = scan0.ToInt32();
if (!outStream.CanWrite)
{
throw new Exception("Must have access to Write in the Stream");
}
int num = 0;
int num2 = 0;
int num3 = 0;
if (format <= PixelFormat.Format32bppRgb)
{
if (format == PixelFormat.Format24bppRgb || format == PixelFormat.Format32bppRgb)
{
num3 = 3;
goto IL_81;
}
}
else if (format == PixelFormat.Format32bppPArgb || format == PixelFormat.Format32bppArgb)
{
num3 = 4;
goto IL_81;
}
throw new NotSupportedException(format.ToString());
IL_81:
num = imageSize.Width * num3;
num2 = num * imageSize.Height;
if (this._encodeBuffer == null)
{
this._encodedFormat = format;
this._encodedWidth = imageSize.Width;
this._encodedHeight = imageSize.Height;
this._encodeBuffer = new byte[num2];
byte[] encodeBuffer;
byte * ptr2;
if ((encodeBuffer = this._encodeBuffer) != null && encodeBuffer.Length != 0)
{
fixed(byte *ptr2 = &encodeBuffer[0])
{
}
}
else
{
ptr2 = null;
}
byte[] array = null;
using (Bitmap bitmap = new Bitmap(imageSize.Width, imageSize.Height, num, format, scan0))
{
array = this._jpgCompression.Compress(bitmap);
}
outStream.Write(BitConverter.GetBytes(array.Length), 0, 4);
outStream.Write(array, 0, array.Length);
GClass26.memcpy(new IntPtr((void *)ptr2), scan0, (uint)num2);
ptr2 = null;
}
else
{
if (this._encodedFormat != format)
{
throw new Exception("PixelFormat is not equal to previous Bitmap");
}
if (this._encodedWidth == imageSize.Width)
{
if (this._encodedHeight == imageSize.Height)
{
long position = outStream.Position;
outStream.Write(new byte[4], 0, 4);
long num4 = 0L;
List <Rectangle> list = new List <Rectangle>();
Size size = new Size(scanArea.Width, this.CheckBlock.Height);
Size size2 = new Size(scanArea.Width % this.CheckBlock.Width, scanArea.Height % this.CheckBlock.Height);
int num5 = scanArea.Height - size2.Height;
int num6 = scanArea.Width - size2.Width;
Rectangle rectangle = default(Rectangle);
List <Rectangle> list2 = new List <Rectangle>();
size = new Size(scanArea.Width, size.Height);
byte[] encodeBuffer2;
byte * ptr3;
if ((encodeBuffer2 = this._encodeBuffer) != null && encodeBuffer2.Length != 0)
{
fixed(byte *ptr3 = &encodeBuffer2[0])
{
}
}
else
{
ptr3 = null;
}
for (int num7 = scanArea.Y; num7 != scanArea.Height; num7 += size.Height)
{
if (num7 == num5)
{
size = new Size(scanArea.Width, size2.Height);
}
rectangle = new Rectangle(scanArea.X, num7, scanArea.Width, size.Height);
int num8 = num7 * num + scanArea.X * num3;
if (GClass26.memcmp(ptr3 + num8, ptr + num8, (uint)num) != 0)
{
int index = list.Count - 1;
if (list.Count != 0 && list[index].Y + list[index].Height == rectangle.Y)
{
rectangle = new Rectangle(list[index].X, list[index].Y, list[index].Width, list[index].Height + rectangle.Height);
list[index] = rectangle;
}
else
{
list.Add(rectangle);
}
}
}
for (int i = 0; i < list.Count; i++)
{
size = new Size(this.CheckBlock.Width, list[i].Height);
for (int num9 = scanArea.X; num9 != scanArea.Width; num9 += size.Width)
{
if (num9 == num6)
{
size = new Size(size2.Width, list[i].Height);
}
rectangle = new Rectangle(num9, list[i].Y, size.Width, list[i].Height);
bool flag2 = false;
uint count = (uint)(num3 * rectangle.Width);
for (int j = 0; j < rectangle.Height; j++)
{
int num10 = num * (rectangle.Y + j) + num3 * rectangle.X;
if (GClass26.memcmp(ptr3 + num10, ptr + num10, count) != 0)
{
flag2 = true;
}
GClass26.memcpy_1((void *)((byte *)ptr3 + num10), (void *)(ptr + num10), count);
}
if (flag2)
{
int index = list2.Count - 1;
if (list2.Count > 0 && list2[index].X + list2[index].Width == rectangle.X)
{
Rectangle rectangle2 = list2[index];
int width = rectangle.Width + rectangle2.Width;
rectangle = new Rectangle(rectangle2.X, rectangle2.Y, width, rectangle2.Height);
list2[index] = rectangle;
}
else
{
list2.Add(rectangle);
}
}
}
}
ptr3 = null;
for (int k = 0; k < list2.Count; k++)
{
Rectangle rectangle3 = list2[k];
int num11 = num3 * rectangle3.Width;
Bitmap bitmap2 = null;
BitmapData bitmapData = null;
long num14;
try
{
bitmap2 = new Bitmap(rectangle3.Width, rectangle3.Height, format);
bitmapData = bitmap2.LockBits(new Rectangle(0, 0, bitmap2.Width, bitmap2.Height), ImageLockMode.ReadWrite, bitmap2.PixelFormat);
int l = 0;
int num12 = 0;
while (l < rectangle3.Height)
{
int num13 = num * (rectangle3.Y + l) + num3 * rectangle3.X;
GClass26.memcpy_1((void *)((byte *)bitmapData.Scan0.ToPointer() + num12), (void *)(ptr + num13), (uint)num11);
num12 += num11;
l++;
}
outStream.Write(BitConverter.GetBytes(rectangle3.X), 0, 4);
outStream.Write(BitConverter.GetBytes(rectangle3.Y), 0, 4);
outStream.Write(BitConverter.GetBytes(rectangle3.Width), 0, 4);
outStream.Write(BitConverter.GetBytes(rectangle3.Height), 0, 4);
outStream.Write(new byte[4], 0, 4);
num14 = outStream.Length;
long position2 = outStream.Position;
this._jpgCompression.Compress(bitmap2, ref outStream);
num14 = outStream.Position - num14;
outStream.Position = position2 - 4L;
outStream.Write(BitConverter.GetBytes(num14), 0, 4);
outStream.Position += num14;
}
finally
{
bitmap2.UnlockBits(bitmapData);
bitmap2.Dispose();
}
num4 += num14 + 20L;
}
outStream.Position = position;
outStream.Write(BitConverter.GetBytes(num4), 0, 4);
return;
}
}
throw new Exception("Bitmap width/height are not equal to previous bitmap");
}
}
}