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244 lines
6.8 KiB
244 lines
6.8 KiB
2 months ago
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/*
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* Image Library -- Simple image manipulation utility
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*
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* (c) 2006 Pavel Charvat <pchar@ucw.cz>
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*
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* This software may be freely distributed and used according to the terms
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* of the GNU General Public License.
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*/
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#include <ucw/lib.h>
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#include <ucw/fastbuf.h>
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#include <images/images.h>
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#include <images/color.h>
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#include <getopt.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdio.h>
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static void NONRET
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usage(void)
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{
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fputs("\
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Usage: ucw-image-tool [options] infile [outfile]\n\
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\n\
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-q --quiet no progress messages\n\
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-f --input-format input image format (jpeg, gif, png)\n\
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-F --output-format output image format\n\
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-s --size force output dimensions (100x200)\n\
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-b --fit-to-box scale to fit the box (100x200)\n\
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-c --colorspace force output colorspace (Grayscale, Grayscale+Alpha, RGB, RGB+Alpha, ...)\n\
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-Q --jpeg-quality JPEG quality (1..100)\n\
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-g --background background color (hexadecimal RRGGBB)\n\
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-G --default-background background applied only if the image contains no background info (RRGGBB, default=FFFFFF)\n\
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-a --remove-alpha remove alpha channel\n\
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-e --exif reads Exif data\n"
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, stderr);
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exit(1);
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}
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static char *shortopts = "qf:F:s:b:c:Q:g:G:ae";
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static struct option longopts[] =
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{
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{ "quiet", 0, 0, 'q' },
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{ "input-format", 0, 0, 'f' },
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{ "output-format", 0, 0, 'F' },
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{ "size", 0, 0, 's' },
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{ "fit-to-box", 0, 0, 'b' },
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{ "colorspace", 0, 0, 'c' },
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{ "jpeg-quality", 0, 0, 'Q' },
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{ "background", 0, 0, 'g' },
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{ "default-background", 0, 0, 'G' },
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{ "remove-alpha", 0, 0, 'a' },
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{ "exif", 0, 0, 'e' },
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{ NULL, 0, 0, 0 }
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};
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static uint verbose = 1;
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static byte *input_file_name;
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static enum image_format input_format;
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static byte *output_file_name;
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static enum image_format output_format;
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static uint cols;
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static uint rows;
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static uint fit_to_box;
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static uint channels_format;
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static uint jpeg_quality;
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static struct color background_color;
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static struct color default_background_color;
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static uint remove_alpha;
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static uint exif;
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static void
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parse_color(struct color *color, byte *s)
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{
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if (strlen(s) != 6)
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usage();
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errno = 0;
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char *end;
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long int v = strtol(s, &end, 16);
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if (errno || *end || v < 0)
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usage();
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color_make_rgb(color, (v >> 16) & 255, (v >> 8) & 255, v & 255);
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}
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#define MSG(x...) do{ if (verbose) msg(L_INFO, ##x); }while(0)
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int
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main(int argc, char **argv)
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{
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log_init(argv[0]);
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int opt;
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default_background_color = color_white;
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while ((opt = getopt_long(argc, argv, shortopts, longopts, NULL)) >= 0)
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switch (opt)
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{
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case 'q':
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verbose = 0;
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break;
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case 'f':
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if (!(input_format = image_extension_to_format(optarg)))
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usage();
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break;
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case 'F':
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if (!(output_format = image_extension_to_format(optarg)))
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usage();
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break;
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case 's':
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{
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byte *r = strchr(optarg, 'x');
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if (!r)
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usage();
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*r++ = 0;
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if (!(cols = atoi(optarg)) || !(rows = atoi(r)))
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usage();
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fit_to_box = 0;
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break;
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}
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case 'b':
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{
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byte *r = strchr(optarg, 'x');
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if (!r)
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usage();
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*r++ = 0;
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if (!(cols = atoi(optarg)) || !(rows = atoi(r)))
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usage();
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fit_to_box = 1;
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break;
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}
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case 'c':
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if (!(channels_format = image_name_to_channels_format(optarg)))
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usage();
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break;
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case 'Q':
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if (!(jpeg_quality = atoi(optarg)))
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usage();
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break;
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case 'g':
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parse_color(&background_color, optarg);
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break;
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case 'G':
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parse_color(&default_background_color, optarg);
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break;
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case 'a':
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remove_alpha++;
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break;
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case 'e':
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exif++;
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break;
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default:
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usage();
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}
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if (argc != optind + 1 && argc != optind + 2)
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usage();
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input_file_name = argv[optind++];
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if (argc > optind)
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output_file_name = argv[optind];
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#define TRY(x) do{ if (!(x)) exit(1); }while(0)
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MSG("Initializing image library");
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struct image_context ctx;
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struct image_io io;
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image_context_init(&ctx);
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ctx.tracing_level = ~0U;
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if (!image_io_init(&ctx, &io))
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die("Cannot initialize image I/O");
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MSG("Reading %s", input_file_name);
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byte cs_buf[IMAGE_CHANNELS_FORMAT_MAX_SIZE];
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io.fastbuf = bopen(input_file_name, O_RDONLY, 1 << 18);
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io.format = input_format ? : image_file_name_to_format(input_file_name);
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if (exif)
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io.flags |= IMAGE_IO_WANT_EXIF;
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TRY(image_io_read_header(&io));
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if (!output_file_name)
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{
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bclose(io.fastbuf);
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printf("Format: %s\n", image_format_to_extension(io.format) ? : (byte *)"?");
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printf("Dimensions: %dx%d\n", io.cols, io.rows);
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printf("Colorspace: %s\n", (io.flags & IMAGE_IO_HAS_PALETTE) ? (byte *)"Palette" : image_channels_format_to_name(io.flags, cs_buf));
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printf("NumColors: %u\n", io.number_of_colors);
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if (io.background_color.color_space)
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{
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byte rgb[3];
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TRY(color_put(&ctx, &io.background_color, rgb, COLOR_SPACE_RGB));
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printf("Background: %02x%02x%02x\n", rgb[0], rgb[1], rgb[2]);
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}
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if (io.exif_size)
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printf("ExifSize: %u\n", io.exif_size);
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}
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else
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{
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MSG("%s %dx%d %s", image_format_to_extension(io.format) ? : (byte *)"?", io.cols, io.rows,
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(io.flags & IMAGE_IO_HAS_PALETTE) ? (byte *)"Palette" : image_channels_format_to_name(io.flags, cs_buf));
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if (cols)
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if (fit_to_box)
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{
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image_dimensions_fit_to_box(&io.cols, &io.rows, MIN(cols, 0xffff), MIN(rows, 0xffff), 0);
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}
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else
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{
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io.cols = cols;
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io.rows = rows;
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}
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if (background_color.color_space)
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io.background_color = background_color;
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else if (!io.background_color.color_space)
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io.background_color = default_background_color;
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if (remove_alpha)
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io.flags &= ~IMAGE_ALPHA;
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if (channels_format)
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io.flags = io.flags & ~IMAGE_PIXEL_FORMAT | channels_format;
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if (!(io.flags & IMAGE_ALPHA))
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io.flags |= IMAGE_IO_USE_BACKGROUND;
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if (jpeg_quality)
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io.jpeg_quality = jpeg_quality;
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uint output_fmt = output_format ? : image_file_name_to_format(output_file_name);
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uint output_cs = io.flags & IMAGE_COLOR_SPACE;
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if (output_fmt != IMAGE_FORMAT_JPEG &&
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output_cs != COLOR_SPACE_GRAYSCALE &&
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output_cs != COLOR_SPACE_RGB)
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{
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MSG("Forcing RGB color space");
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io.flags = (io.flags & ~IMAGE_COLOR_SPACE) | COLOR_SPACE_RGB;
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}
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TRY(image_io_read_data(&io, 0));
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bclose(io.fastbuf);
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MSG("Writing %s", output_file_name);
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io.fastbuf = bopen(output_file_name, O_WRONLY | O_CREAT | O_TRUNC, 1 << 18);
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io.format = output_format ? : image_file_name_to_format(output_file_name);
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MSG("%s %dx%d %s", image_format_to_extension(io.format) ? : (byte *)"?", io.cols, io.rows,
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image_channels_format_to_name(io.flags, cs_buf));
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TRY(image_io_write(&io));
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bclose(io.fastbuf);
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}
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image_io_cleanup(&io);
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image_context_cleanup(&ctx);
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MSG("Done.");
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return 0;
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}
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