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April 5, 2020 00:17
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RAW image file dump example for LibRaw
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| /* -*- C++ -*- | |
| * File: raw_dump.cpp | |
| * Copyright 2008-2019 LibRaw LLC (info@libraw.org) | |
| * Created: Sat Mar 14, 2020 | |
| * | |
| * LibRaw sample | |
| * Demosaic RAW image and write color channel data to stdout | |
| * | |
| * The default is to output all color channels, but a combination of channels can also be selected | |
| * Inspiration taken from the rawtran RAW to FITS conversion wrapper for dcraw | |
| * | |
| LibRaw is free software; you can redistribute it and/or modify | |
| it under the terms of the one of two licenses as you choose: | |
| 1. GNU LESSER GENERAL PUBLIC LICENSE version 2.1 | |
| (See file LICENSE.LGPL provided in LibRaw distribution archive for details). | |
| 2. COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0 | |
| (See file LICENSE.CDDL provided in LibRaw distribution archive for details). | |
| */ | |
| #include <stdio.h> | |
| #include <string.h> | |
| #include <math.h> | |
| #include "libraw/libraw.h" | |
| #ifndef LIBRAW_WIN32_CALLS | |
| #include <netinet/in.h> | |
| #else | |
| #include <winsock2.h> | |
| #endif | |
| #ifdef LIBRAW_WIN32_CALLS | |
| #define snprintf _snprintf | |
| #endif | |
| int main(int ac, char *av[]) | |
| { | |
| int i, ret; | |
| int color_channel = 0, output_fullcolor = 1, output_tiff = 1, output_fits = 0, output_stdout = 0; | |
| static int verbosity = 0; | |
| char outfn[1024]; | |
| LibRaw RawProcessor; | |
| if (ac < 2) | |
| { | |
| usage: | |
| printf("raw_dump - LibRaw %s sample. %d cameras supported\n" | |
| "Usage: %s raw-files....\n" | |
| "\t-c - Image channel index to extract { 0 => 'R', 1 => 'G1', 2 => 'B', 3 => 'G2' }\n" | |
| "\t-T - Output TIFF format image (default)\n" | |
| "\t-F - Output FITS format image\n" | |
| "\t-o - Send color channel data to STDOUT in PPM format\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 | |
| /* Define our standard options, generally we want the RAW data untouched */ | |
| OUT.output_bps = 16; | |
| OUT.user_flip = 0; | |
| OUT.no_auto_bright = 1; | |
| OUT.half_size = 1; | |
| OUT.no_interpolation = 1; | |
| OUT.gamm[0] = OUT.gamm[1] = 1; | |
| for (i = 1; i < ac; i++) | |
| { | |
| if (av[i][0] == '-') | |
| { | |
| if (av[i][1] == 'c' && av[i][2] == 0) | |
| { | |
| i++; | |
| color_channel = av[i] ? atoi(av[i]) : 0; | |
| output_fullcolor = 0; | |
| } | |
| else if (av[i][1] == 'T' && av[i][2] == 0) | |
| { | |
| output_tiff = 1; | |
| output_fits = 0; | |
| output_stdout = 0; | |
| OUT.output_tiff = 1; | |
| } | |
| else if (av[i][1] == 'F' && av[i][2] == 0) | |
| { | |
| output_tiff = 0; | |
| output_fits = 1; | |
| output_stdout = 0; | |
| OUT.output_tiff = 0; | |
| } | |
| else if (av[i][1] == 'o' && av[i][2] == 0) | |
| { | |
| output_tiff = 0; | |
| output_fits = 0; | |
| output_stdout = 1; | |
| OUT.output_tiff = 0; | |
| verbosity = 0; | |
| snprintf(outfn,sizeof(outfn),"-"); | |
| } | |
| else | |
| goto usage; | |
| continue; | |
| } | |
| int c; | |
| if (verbosity) | |
| { | |
| 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; | |
| } | |
| RawProcessor.raw2image(); | |
| // hack to make dcraw tiff writer happy | |
| int isrgb = (P1.colors == 4 ? 0 : 1); | |
| S.width = S.iwidth; | |
| S.height = S.iheight; | |
| if (!output_fullcolor) | |
| { | |
| P1.colors = 1; | |
| for (int rc = 0; rc < S.iheight * S.iwidth; rc++) | |
| { | |
| RawProcessor.imgdata.image[rc][0] = RawProcessor.imgdata.image[rc][color_channel]; | |
| } | |
| char lname[8]; | |
| if (isrgb) | |
| { | |
| snprintf(lname, 7, "%c", ((char *)("RGBG"))[color_channel]); | |
| if (color_channel == 3) | |
| { | |
| strcat(lname, "2"); | |
| } | |
| else if (color_channel == 1) | |
| { | |
| strcat(lname, "1"); | |
| } | |
| } | |
| else | |
| snprintf(lname, 7, "%c", ((char *)("GCMY"))[color_channel]); | |
| if (!output_stdout) | |
| { | |
| snprintf(outfn, sizeof(outfn), "%s.%s.tiff", av[i], lname); | |
| } | |
| } | |
| else | |
| { | |
| if (!output_stdout) | |
| { | |
| snprintf(outfn, sizeof(outfn), "%s.tiff", av[i]); | |
| } | |
| } | |
| if (verbosity) | |
| { | |
| 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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