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2007.08.17 19:10 "How to write a planar tiff file", by 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/
>
>