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From "Marc Campforts (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IMAGING-104) ByteSourceInputStream not starting at byte 0
Date Fri, 15 Feb 2013 15:01:18 GMT
Marc Campforts created IMAGING-104:
--------------------------------------

             Summary: ByteSourceInputStream not starting at byte 0
                 Key: IMAGING-104
                 URL: https://issues.apache.org/jira/browse/IMAGING-104
             Project: Commons Imaging
          Issue Type: Bug
          Components: Format: JPEG
    Affects Versions: 0.97
            Reporter: Marc Campforts


Following code results in a  
org.apache.sanselan.ImageReadException: Not a Valid JPEG File: doesn't begin with 0xffd8

File file = new File(image.jpg);
InputStream is = new FileInputStream(file);
JpegImageParser parser = new JpegImageParser();
ByteSource byteSource = new ByteSourceInputStream(is, "image.jpg");
ArrayList<?> segments = parser.readSegments(byteSource, new int[] {0xffee}, true);

But when I use the File instead of the InputStream:

File file = new File(image.jpg);
JpegImageParser parser = new JpegImageParser();
ByteSource byteSource = new ByteSourceFile(file);
ArrayList<?> segments = parser.readSegments(byteSource, new int[] {0xffee}, true);

it works.

When I look into the exception, the process starts to read from byte 1024 instead of byte
0 when checking the filetype.

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