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/* -*- C++ -*-
* File: 4channels.cpp
* Copyright 2009 Alex Tutubalin <lexa@lexa.ru>
* Created: Mon Feb 09, 2009
*
* LibRaw sample
* Generates 4 TIFF file from RAW data, one file per channel
*
* 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, 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include <stdio.h>
#include <string.h>
#include <math.h>
#ifndef WIN32
#include <netinet/in.h>
#else
#include <winsock2.h>
#endif
#include "libraw/libraw.h"
#ifdef WIN32
#define snprintf _snprintf
#endif
int main(int ac, char *av[])
{
int i, ret;
int autoscale=0,filtering_mode=LIBRAW_FILTERING_DEFAULT,black_subtraction=1;
char outfn[1024],thumbfn[1024];
LibRaw RawProcessor;
if(ac<2)
{
usage:
printf(
"4channeld - LibRaw %s sample. %d cameras supported\n"
"Usage: %s [-s N] [-g] [-A] [-B] [-N] raw-files....\n"
"\t-s N - select Nth image in file (default=0)\n"
"\t-g - use gamma correction with gamma 2.2 (not precise,use for visual inspection only)\n"
"\t-A - autoscaling (by integer factor)\n"
"\t-B - no black subtraction\n"
"\t-N - no raw curve\n"
,LibRaw::version(),
LibRaw::cameraCount(),
av[0]);
return 0;
}
#define P1 RawProcessor.imgdata.idata
#define S RawProcessor.imgdata.sizes
#define C RawProcessor.imgdata.color
#define T RawProcessor.imgdata.thumbnail
#define P2 RawProcessor.imgdata.other
#define OUT RawProcessor.imgdata.params
OUT.document_mode=2;
OUT.output_bps=16;
OUT.output_tiff=1;
OUT.user_flip=0;
OUT.no_auto_bright = 1;
OUT.half_size=1;
OUT.filtering_mode= LIBRAW_FILTERING_AUTOMATIC;
for (i=1;i<ac;i++)
{
if(av[i][0]=='-')
{
if(av[i][1]=='s' && av[i][2]==0)
{
i++;
OUT.shot_select=atoi(av[i]);
}
else if(av[i][1]=='g' && av[i][2]==0)
OUT.gamma_16bit=1;
else if(av[i][1]=='A' && av[i][2]==0)
autoscale=1;
else if(av[i][1]=='B' && av[i][2]==0)
{
filtering_mode |= (LIBRAW_FILTERING_NOZEROES | LIBRAW_FILTERING_NOBLACKS);
black_subtraction=0;
}
else if(av[i][1]=='N' && av[i][2]==0)
filtering_mode |= LIBRAW_FILTERING_NORAWCURVE;
else
goto usage;
continue;
}
if(filtering_mode)
OUT.filtering_mode = (LibRaw_filtering) filtering_mode;
int r,c;
printf("Processing file %s\n",av[i]);
if( (ret = RawProcessor.open_file(av[i])) != LIBRAW_SUCCESS)
{
fprintf(stderr,"Cannot open %s: %s\n",av[i],libraw_strerror(ret));
continue; // no recycle b/c open file will recycle itself
}
if(P1.is_foveon)
{
printf("Cannot process foveon image %s\n",av[i]);
continue ;
}
if( (ret = RawProcessor.unpack() ) != LIBRAW_SUCCESS)
{
fprintf(stderr,"Cannot unpack %s: %s\n",av[i],libraw_strerror(ret));
continue;
}
if(black_subtraction && C.black>0)
{
for(int j=0; j<S.iheight*S.iwidth; j++)
for(int c = 0; c< 4; c++)
if(RawProcessor.imgdata.image[j][c]>C.black)
RawProcessor.imgdata.image[j][c]-=C.black;
else
RawProcessor.imgdata.image[j][c]=0;
}
if(autoscale)
{
unsigned max=0,scale;
for(int j=0; j<S.iheight*S.iwidth; j++)
for(int c = 0; c< 4; c++)
if(max < RawProcessor.imgdata.image[j][c])
max = RawProcessor.imgdata.image[j][c];
if (max >0 && max< 1<<15)
{
scale = (1<<16)/max;
printf("Scaling with multiplier=%d (max=%d)\n",scale,max);
for(int j=0; j<S.iheight*S.iwidth; j++)
for(c=0;c<4;c++)
RawProcessor.imgdata.image[j][c] *= scale;
}
printf("Black level (scaled)=%d\n",C.black*scale);
}
else
printf("Black level (unscaled)=%d\n",C.black);
// hack to make dcraw tiff writer happy
int isrgb=(P1.colors==4?0:1);
P1.colors = 1;
S.width = S.iwidth;
S.height = S.iheight;
for (int layer=0;layer<4;layer++)
{
if(layer>0)
{
for (int rc = 0; rc < S.iheight*S.iwidth; rc++)
RawProcessor.imgdata.image[rc][0] = RawProcessor.imgdata.image[rc][layer];
}
char lname[8];
if(isrgb)
{
snprintf(lname,7,"%c",(char*)("RGBG")[layer]);
if(layer==3)
strcat(lname,"2");
}
else
snprintf(lname,7,"%c",(char*)("GCMY")[layer]);
if(OUT.shot_select)
snprintf(outfn,sizeof(outfn),"%s-%d.%s.tiff",av[i],OUT.shot_select,lname);
else
snprintf(outfn,sizeof(outfn),"%s.%s.tiff",av[i],lname);
printf("Writing file %s\n",outfn);
if( LIBRAW_SUCCESS != (ret = RawProcessor.dcraw_ppm_tiff_writer(outfn)))
fprintf(stderr,"Cannot write %s: %s\n",outfn,libraw_strerror(ret));
}
}
return 0;
}
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