4 messages in net.java.dev.jai.interestRe: [JAI] Converting bitmap - DPI and...
FromSent OnAttachments
jai-...@javadesktop.orgNov 17, 2005 9:42 am 
Brian BurkhalterNov 17, 2005 12:12 pm 
jai-...@javadesktop.orgNov 17, 2005 1:39 pm 
jai-...@javadesktop.orgNov 29, 2005 8:01 pm 
Actions with this message:
Paste this link in email or IM:
Paste this link in email or IM:
Atom feed for this thread
Paste this URL into your reader:
Subject:Re: [JAI] Converting bitmap - DPI and bit depth not carrying overActions...
From:Brian Burkhalter (Bria@Sun.COM)
Date:Nov 17, 2005 12:12:17 pm
List:net.java.dev.jai.interest

Looks like it should work.

Can you post a self-contained complete test case and data (if not too big).

Brian

On Thu, 17 Nov 2005, jai-@javadesktop.org wrote:

Hi;

I am converting a file from one format to PNG and the DPI and bits/pixel are not
carrying over. The DPI is always -1 and the PNG is always 24 DPI.

Partial code here: ImageInputStream imageInput = ImageIO.createImageInputStream(new
ByteArrayInputStream(image)); Iterator it = ImageIO.getImageReaders("bmp"); ImageReader reader = null; while(it.hasNext()) { Object obj = it.next(); if (! (obj instanceof ImageReader)) continue; reader = (ImageReader) obj; if (reader.getOriginatingProvider().isStandardImageMetadataFormatSupported()) break; } reader.setInput(imageInput); IIOMetadata meta = reader.getImageMetadata(0);

it = ImageIO.getImageWritersByFormatName(HtmlImage.typeToStr(formats[0])); ImageWriter writer = null; while(it.hasNext()) { writer = (ImageWriter)it.next(); if (writer.getOriginatingProvider().isStandardImageMetadataFormatSupported()) break; } ImageWriteParam writeParam = writer.getDefaultWriteParam(); if (writeParam.canWriteCompressed()) { writeParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT); writeParam.setCompressionQuality(0.95f); }

RenderedImage ri = reader.read(0); ByteArrayOutputStream out = new ByteArrayOutputStream(); MemoryCacheImageOutputStream mcios = new MemoryCacheImageOutputStream(out); writer.setOutput(mcios); writer.write(null, new IIOImage(ri, null, meta), writeParam);

reader.dispose(); imageInput.close(); writer.dispose(); mcios.close();

--- [Message sent by forum member 'dav@windward.net' (David Thielen)]

http://www.javadesktop.org/forums/thread.jspa?messageID=125658&#125658

--------------------------------------------------------------------- To unsubscribe, e-mail: inte@jai.dev.java.net For additional commands, e-mail: inte@jai.dev.java.net

---------------- Brian Burkhalter Java Multimedia, Imaging, and Graphics Sun Microsystems, Inc.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~