[magick-users] Generate 'png' from Blob

[Bill Moseley]

Can anyone offer help with this?

On Sat, Feb 09, 2008 at 07:09:40AM -0800, Bill Moseley wrote:
> I'm using the Perl interface.
> 
> 
> I have a file, and I'm not sure of its contents.  I want
> to read it into memory (if it's a supported ImageMagic format),
> resize it, and then write it to a database as a png image.  So even if
> its a PDF it will end up as a png.
> 
> The very basic part I'm missing is how to convert to png.
> 
> So, excluding the error checking, I'm basically doing:
> 
>     $magick = Image::Magick->new;
>     $magick->Read( $filename );
> 
>     $image = $magick->[0];
>     $image ->Resize( '100x100' );
>     $image->Strip;
> 
>     $blob = $image->ImageToBlob;
>     $mime = $image->mime;
> 
> The docs say ImageToBlob takes any "Attribute" and I tried
> 
>     $blob = $image->ImageToBlob( magick => 'png' );
> 
> 
> 
> 
> My second question is can I trust the Read() method to
> fail on bad data?  My only other option would be to use file -i or 
> some MIME magic method to try and guess the file's MIME type -- but
> still then I don't know if that would be acceptable to ImageMagic.
> 
> 
> Thanks,
> 
> 
> 
> 
> -- 
> Bill Moseley
> moseley at hank.org
> 
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> 

-- 
Bill Moseley
moseley at hank.org