FeedLoad(byte[],int,int) Method (original) (raw)
Summary
Supplies image data to the file-load process from a buffer that you provide.
Syntax
Parameters
data
The image file data.
offset
Offset from the beginning of the buffer to where the image data starts.
length
Total size (in bytes) of the image data.
Example
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.Svg;
public void FeedLoadExample()
{
RasterCodecs codecs = new RasterCodecs();
codecs.CancelFeedLoad();
string url = @"https://www.leadtools.com/images/page_graphics/leadlogo.png";
string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "FeedLoad.bmp");
// Create a WebRequest for the URL
WebRequest request = WebRequest.Create(url);
request.Proxy.Credentials = CredentialCache.DefaultCredentials;
// reduce the timeout to 20sec
request.Timeout = 20000;
WebResponse response = request.GetResponse();
try
{
Stream strm = response.GetResponseStream();
// Read chunks from the stream and feed load to the image
codecs.StartFeedLoad(0, CodecsLoadByteOrder.BgrOrGray);
const int bufferSize = 1024;
byte[] buffer = new byte[bufferSize];
int read;
do
{
System.Windows.Forms.Application.DoEvents();
read = strm.Read(buffer, 0, bufferSize);
Debug.WriteLine("Downloading {0} bytes", read);
if (read > 0)
codecs.FeedLoad(buffer, 0, read);
}
while (read > 0);
}
finally
{
response.Close();
}
RasterImage image = codecs.StopFeedLoad();
// Save the image to disk
codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24);
image.Dispose();
// Clean up
codecs.Dispose();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
Leadtools.Codecs Assembly
CompactFile(Stream,Stream,int,int,bool,int,int,bool,int,CodecsSavePageMode,bool,bool) Method
CompactFile(Stream,Stream,int,int,bool,long,int,bool,long,CodecsSavePageMode,bool,bool,bool) Method
CompactFile(string,string,int,int,bool,int,int,bool,int,CodecsSavePageMode,bool,bool) Method
CompactFile(string,string,int,int,bool,long,int,bool,long,CodecsSavePageMode,bool,bool,bool) Method