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#1 Posted : Wednesday, November 26, 2008 5:20:03 PM(UTC)


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Posts: 6

I am now evaluating Leadtools V16.net. I have run across a roadblock. Whenever I save a .jpg, all the exif tags go away.

    gImage = gCodecs.Load("c:\tmp1.jpg")
    gCodecs.Options.Save.Tags = True
    gCodecs.Save(gImage, "c:\tmp1.jpg", RasterImageFormat.ExifJpeg, 24)

Surely I don't have to make a call to rastercodecs.readcomment for each tag do I? That would be 111 extra disk accesses every time I load a file (for typical photo image). Isn't there a better way to do this?

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#2 Posted : Thursday, November 27, 2008 2:37:14 AM(UTC)

Adnan Ismail  

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Posts: 3,022

Was thanked: 2 time(s) in 2 post(s)

You will need to loop, but you can reduce disk access as follows:
1. Load the file into a System.IO.MemoryStream object.
2. Loop using RasterCodecs.ReadComment() Method that works with streams.
3. After each iteration in the loop, you should rewind the stream to its beginning.

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