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2007.08.17 19:57 "Re: How to write a planar tiff file", by Kai-uwe Behrmann
Can you set the photometric tag and post a small sample?
The data type should point to integer automatically.
Am 17.08.07, 15:10 -0400 schrieb Christian Henning:
> ---------- Forwarded message ----------
> From: Christian Henning <chhenning@gmail.com>
> Date: Aug 17, 2007 3:09 PM
> Subject: Re: [Tiff] How to write a planar tiff file
> To: Toby Thain <toby@smartgames.ca>
>
>
> On 8/17/07, Toby Thain <toby@smartgames.ca> wrote:
> >
> > On 17-Aug-07, at 4:00 PM, Christian Henning wrote:
> >
> > > Hi there, I'm having problems writing a planar image file. Can
> > > somebody spot the problem in the following code. It's the most basic
> > > writer I can think of.
> >
> > What kind of problem are you having?
>
> No reader can open the file. Though, I think it's my fault.
>
> >
> > --Toby
> >
> >
> > >
> > > int main()
> > > {
> > > TIFF* file = TIFFOpen( "write_test.tif", "w" );
> > >
> > > TIFFSetField( file, TIFFTAG_IMAGEWIDTH , 100 );
> > > TIFFSetField( file, TIFFTAG_IMAGELENGTH , 100 );
> > > TIFFSetField( file, TIFFTAG_COMPRESSION, COMPRESSION_LZW );
> > > TIFFSetField( file, TIFFTAG_PLANARCONFIG, PLANARCONFIG_SEPARATE );
> > > TIFFSetField( file, TIFFTAG_BITSPERSAMPLE , 8 );
> > > TIFFSetField( file, TIFFTAG_SAMPLESPERPIXEL, 3 );
> > >
> > >
> > > std::vector< unsigned char > row( 100 );
> > >
> > > for( int c = 0; c < 3; ++c )
> > > {
> > > for( int y = 0; y < 100; ++y )
> > > {
> > > int size = TIFFWriteScanline( file
> > > , &row.front()
> > > , y
> > > , c );
> > >
> > > io_error_if( size == -1, "Write error." );
> > > }
> > > }
> > >
> > > TIFFClose( file );
> > > }
> > >
> > >
> > > Thanks ahead,
> > > Christian
> > > _______________________________________________
> > > Tiff mailing list: Tiff@lists.maptools.org
> > > http://lists.maptools.org/mailman/listinfo/tiff
> > > http://www.remotesensing.org/libtiff/
> >
> >
> _______________________________________________
> Tiff mailing list: Tiff@lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/tiff
> http://www.remotesensing.org/libtiff/
>
Mit freundlichen Grüßen
Kai-Uwe Behrmann
--
Programmierung für Farbmanagement
www.behrmann.name + www.oyranos.org + www.cinepaint.org