FreeImage uses libRawLite
to read Canon CR2
raw format.
However, libRawLite
does not support the sRAW
CR2 files.
FreeImage.LoadFromStream fails for a CR2 file
سؤال
The following code illustrates the problem I am faced with. If I load a CR2 file with
var format = FREE_IMAGE_FORMAT.FIF_RAW;
retVal = FreeImage.LoadBitmap("AJ2A1447.cr2", ref format);
then I successfully load the RAW file. If I use something like
using (Stream stream = new FileStream("AJ2A1447.cr2", FileMode.Open, FileAccess.Read))
{
var format = FREE_IMAGE_FORMAT.FIF_RAW;
freeImageHandle = FreeImage.LoadFromStream(stream, ref format);
if (freeImageHandle.IsNull)
{
throw new Exception("Unable to load image from stream");
}
retVal = FreeImage.GetBitmap(freeImageHandle);
}
then I am unsuccessful as freeImageHandle is null. I use FileStream for a test, the real code will use a MemoryStream.
Any clue to why LoadFromStream fails?
المحلول 2
نصائح أخرى
there is number of RAW formats and I doubt if FREE_IMAGE_FORMAT.FIF_RAW knows how to decode CR2.
http://en.wikipedia.org/wiki/Raw_image_format
Try to use windows generated bitmap and jpg to see if your code works.
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