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Diffstat (limited to 'libkdcraw/libraw/samples/4channels.cpp')
| -rw-r--r-- | libkdcraw/libraw/samples/4channels.cpp | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/libkdcraw/libraw/samples/4channels.cpp b/libkdcraw/libraw/samples/4channels.cpp new file mode 100644 index 0000000..d266c53 --- /dev/null +++ b/libkdcraw/libraw/samples/4channels.cpp @@ -0,0 +1,187 @@ +/* -*- 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., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, 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; +} |