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/*
* simple PhotoCD to ppm/jpeg converter
*
* (c) 1996 Gerd Knorr <kraxel@goldbach.in-berlin.de>
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
#include "config.h"
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
extern int optind;
extern char *optarg;
#endif
#include "pcd.h"
#ifdef HAVE_LIBJPEG
#include "jpeglib.h"
#endif
#define TRUE 1
#define FALSE 0
#ifdef HAVE_GETOPT_LONG
static struct option long_opts[] =
{
{"help", no_argument, NULL, 'h'},
{"verbose", no_argument, NULL, 'v'},
{"gray", no_argument, NULL, '1'},
{"resolution", required_argument, NULL, 'r'},
{"orientation", required_argument, NULL, 'o'},
{"geometry", required_argument, NULL, 'g'},
{"jpeg", optional_argument, NULL, 'j'},
{NULL, 0, NULL, 0}
};
#endif
int rot = -1, res = 3, left = 0, top = 0, width = 0, height = 0,
bytes, jpeg, quality = 75;
void
usage(char *name)
{
char *h;
h = strrchr(name, '/');
fprintf(stderr,
"This program converts PhotoCD images to ppm or jpeg\n"
"\n"
"usage: %s [ options ] infile outfile\n"
"\n"
"options:\n"
#ifdef HAVE_GETOPT_LONG
" --help print this text\n"
" --verbose prints a rotor while decoding\n"
" --gray write grayscaled image\n"
" --resolution=n select resolution [1..5]\n"
" --orientation=n orientation [0..3]\n"
" --geometry=WxH+L+T decode only a part of the image, all 4 "
"values are mandatory\n"
" W=width, H=height, L/T=left/top offset\n"
#ifdef HAVE_LIBJPEG
" --jpeg[=quality] write jpeg, optional set jpeg quality\n"
#endif
"\n"
"The short option is the first letter "
"(except '--gray', this one has '-1').\n"
#else /* HAVE_GETOPT_LONG */
" -h print this text\n"
" -v prints a rotor while decoding\n"
" -1 write grayscaled image\n"
" -r n select resolution [1..5]\n"
" -o n orientation [0..3]\n"
" -g WxH+L+T decode only a part of the image, all 4 "
"values are mandatory\n"
" W=width, H=height, L/T=left/top offset\n"
#ifdef HAVE_LIBJPEG
" -j [quality] write jpeg, optional set jpeg quality\n"
#endif
"\n"
#endif /* HAVE_GETOPT_LONG */
"Using '-' as outfile writes to stdout.\n"
"\n"
,h ? h + 1 : name);
exit(1);
}
int
main(int argc, char *argv[])
{
int gray = FALSE, verbose = FALSE, c, type, y;
FILE *fp = stdout;
unsigned char *image;
struct PCD_IMAGE img;
#ifdef HAVE_LIBJPEG
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
#endif
/* getopt */
for (;;) {
#ifdef HAVE_GETOPT_LONG
c = getopt_long(argc, argv, "hv1r:o:g:j::", long_opts, NULL);
#else
c = getopt(argc, argv, "hv1r:o:g:j::");
#endif
if (c == -1)
break;
switch (c) {
case 'h':
usage(argv[0]);
break;
case 'v':
verbose = TRUE;
break;
case '1':
gray = TRUE;
break;
case 'r':
res = atoi(optarg);
break;
case 'o':
rot = atoi(optarg);
break;
case 'g':
if (4 != (sscanf(optarg, "%ix%i+%i+%i",
&width, &height, &left, &top))) {
fprintf(stderr, "invalid geometry specification\n");
exit(1);
}
break;
case 'j':
#ifdef HAVE_LIBJPEG
jpeg = TRUE;
if (optarg)
quality = atoi(optarg);
break;
#else
fprintf(stderr, "Compiled without jpeg support, sorry.\n");
exit(1);
#endif
default:
exit(1);
}
}
if (optind + 2 != argc)
usage(argv[0]);
bytes = gray ? 1 : 3;
type = gray ? PCD_TYPE_GRAY : PCD_TYPE_RGB;
if (0 != pcd_open(&img, argv[optind])) {
fprintf(stderr, "libpcd: %s\n", pcd_errmsg);
exit(1);
}
if (-1 == rot)
rot = pcd_get_rot(&img, 0);
if (-1 == pcd_select(&img, res, 0, gray, verbose, rot,
&left, &top, &width, &height)) {
fprintf(stderr, "libpcd: %s\n", pcd_errmsg);
exit(1);
}
if (strcmp(argv[optind + 1], "-"))
if (NULL == (fp = fopen(argv[optind + 1], "w"))) {
perror(argv[optind + 1]);
exit(1);
}
#ifdef HAVE_LIBJPEG
if (jpeg) {
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
jpeg_stdio_dest(&cinfo, fp);
cinfo.image_width = width;
cinfo.image_height = height;
cinfo.input_components = bytes;
cinfo.in_color_space = gray ? JCS_GRAYSCALE : JCS_RGB;
jpeg_set_defaults(&cinfo);
jpeg_set_quality(&cinfo, quality, TRUE);
jpeg_start_compress(&cinfo, TRUE);
} else
#endif
fprintf(fp, "P%c\n%i %i\n255\n", gray ? '5' : '6', width, height);
if (-1 == pcd_decode(&img)) {
fprintf(stderr, "libpcd: %s\n", pcd_errmsg);
exit(1);
}
image = malloc(width * bytes);
for (y = 0; y < height; y++) {
if (verbose)
fprintf(stderr, "%c\010", pcd_rotor[y & 3]);
if (-1 == pcd_get_image_line(&img, y, image, type, 0)) {
fprintf(stderr, "libpcd: %s\n", pcd_errmsg);
exit(1);
}
#ifdef HAVE_LIBJPEG
if (jpeg) {
jpeg_write_scanlines(&cinfo, &image, 1);
} else
#endif
if (width != fwrite(image, bytes, width, fp)) {
perror("fwrite");
exit(1);
}
}
if (verbose)
fputc('*', stderr);
pcd_close(&img);
free(image);
#ifdef HAVE_LIBJPEG
if (jpeg) {
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
}
#endif
fclose(fp);
exit(0);
}
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