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//
// Lynkeos
// $Id$
//
// Created by Jean-Etienne LAMIAUD on Fri Apr 15 2005.
// Copyright (c) 2005-2025. Jean-Etienne LAMIAUD
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
#include <tiffio.h>
#include <AppKit/AppKit.h>
#include "MyTiffWriter.h"
@implementation MyTiffWriter
+ (void) load
{
// Nothing to do, this is just to force the runtime to load this class
}
- (id) init
{
if ( (self = [super init]) != nil )
{
[[NSBundle mainBundle] loadNibNamed:@"TiffWriter" owner:self topLevelObjects:&_nibObjects];
[_nibObjects retain];
_compression = COMPRESSION_LZW;
_nBits = 16;
}
return( self );
}
- (void) dealloc
{
[_nibObjects release];
[super dealloc];
}
+ (NSString*) writerName { return( @"TIFF" ); }
+ (NSString*) fileExtension { return( @"tiff" ); }
+ (BOOL) canSaveDataWithPlanes:(u_short)nPlanes
width:(u_short)w height:(u_short)h
metaData:(NSDictionary*)metaData
{
return( nPlanes == 1 || nPlanes == 3 );
}
- (NSPanel*) configurationPanel { return( _cfgPanel ); }
+ (id <LynkeosFileWriter>) writerForURL:(NSURL*)url
planes:(u_short)nPlanes
width:(u_short)w height:(u_short)h
metaData:(NSDictionary*)metaData
{
// No pre-processing needed
return( [[[self alloc] init] autorelease] );
}
- (void) saveImageAtURL:(NSURL*)url
withData:(const REAL * const * const)data
blackLevel:(double)black whiteLevel:(double)white
withPlanes:(u_short)nPlanes
width:(u_short)w
lineWidth:(u_short)lineW
height:(u_short)h
metaData:(NSDictionary*)metaData
{
TIFF *tiff = TIFFOpen( [[url path] fileSystemRepresentation], "w" );
const u_long scanLineW = w*nPlanes*_nBits/8;
void *buf;
u_short s, x, y, c;
u_long hstrip;
double max = 0;
// Choose a strip size
hstrip = 256*1024/scanLineW;
if ( hstrip == 0 )
hstrip = 1;
else if ( hstrip > h )
hstrip = h;
// Save the needed tags
TIFFSetField(tiff,TIFFTAG_COMPRESSION,_compression);
TIFFSetField(tiff,TIFFTAG_IMAGEWIDTH,w);
TIFFSetField(tiff,TIFFTAG_IMAGELENGTH,h);
TIFFSetField(tiff,TIFFTAG_BITSPERSAMPLE,_nBits);
if ( _nBits == 32 )
{
TIFFSetField(tiff, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_IEEEFP);
TIFFSetField(tiff, TIFFTAG_PREDICTOR, PREDICTOR_FLOATINGPOINT);
TIFFSetField(tiff, TIFFTAG_SMINSAMPLEVALUE, black);
TIFFSetField(tiff, TIFFTAG_SMAXSAMPLEVALUE, white);
}
else
{
TIFFSetField(tiff, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
TIFFSetField(tiff, TIFFTAG_PREDICTOR, PREDICTOR_HORIZONTAL);
}
TIFFSetField(tiff,TIFFTAG_SAMPLESPERPIXEL,nPlanes);
TIFFSetField(tiff,TIFFTAG_PLANARCONFIG,PLANARCONFIG_CONTIG);
TIFFSetField(tiff, TIFFTAG_ROWSPERSTRIP, hstrip);
TIFFSetField(tiff, TIFFTAG_PHOTOMETRIC,
(nPlanes == 1 ? PHOTOMETRIC_MINISBLACK : PHOTOMETRIC_RGB) );
switch( _nBits )
{
case 8 : max = 255.9; break;
case 16 : max = 65535.9; break;
case 32 : max = white - black; break;
default : NSAssert( NO, @"Inconsistent TIFF sample size" );
}
buf = _TIFFmalloc(TIFFStripSize(tiff));
// Save strip by strip
for( s = 0; s < (h+hstrip-1)/hstrip; s++ )
{
// Are we in the last strip ?
u_short maxY = h - s*hstrip;
if ( maxY > hstrip )
// Not yet
maxY = hstrip;
for( y = 0; y < maxY ; y++ )
{
for( x = 0; x < w; x++ )
{
for( c = 0; c < nPlanes; c++ )
{
double v = GET_SAMPLE(data[c], x, s*hstrip+y, lineW);
if ( _nBits == 32 )
((float*)buf)[(y*w+x)*nPlanes+c] = (float)(v*max + black);
else
{
v = v*max;
if ( v < 0.0 )
v = 0.0;
if ( v > max )
v = max;
if ( _nBits == 16 )
((u_short*)buf)[(y*w+x)*nPlanes+c] = (u_short)v;
else
((u_char*)buf)[(y*w+x)*nPlanes+c] = (u_char)v;
}
}
}
}
TIFFWriteEncodedStrip(tiff, s, buf, hstrip*scanLineW);
}
_TIFFfree(buf);
TIFFClose( tiff );
}
- (IBAction) changeCompression :(id)sender
{
_compression = [[sender selectedItem] tag];
}
- (IBAction) changeBits :(id)sender
{
_nBits = [[sender selectedItem] tag];
}
- (IBAction) confirmParams :(id)sender
{
[NSApp stopModalWithCode:NSModalResponseOK];
[_cfgPanel close];
}
- (IBAction) cancelParams :(id)sender
{
[NSApp stopModalWithCode:NSModalResponseCancel];
[_cfgPanel close];
}
@end
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