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-rw-r--r--src/calibrator.c733
1 files changed, 0 insertions, 733 deletions
diff --git a/src/calibrator.c b/src/calibrator.c
deleted file mode 100644
index a22feb4..0000000
--- a/src/calibrator.c
+++ /dev/null
@@ -1,733 +0,0 @@
-/**
- * crt-calibrator – Calibration utility for CRT monitors
- * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
- *
- * 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
- */
-#include "calibrator.h"
-
-#include "gamma.h"
-#include "state.h"
-
-#include <unistd.h>
-#include <termios.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <errno.h>
-
-
-
-/**
- * Draw bars in different shades of grey, red, green and blue
- * used for calibrating the contrast and brightness
- */
-void draw_contrast_brightness(void)
-{
- const int CONTRAST_BRIGHTNESS_LEVELS[21] =
- {
- 0, 17, 27, 38, 48, 59, 70, 82, 94, 106, 119, 131,
- 144, 158, 171, 185, 198, 212, 226, 241, 255
- };
- size_t f;
- uint32_t y, x;
- for (f = 0; f < framebuffer_count; f++)
- {
- framebuffer_t* restrict fb = framebuffers + f;
- for (y = 0; y < 4; y++)
- for (x = 0; x < 21; x++)
- {
- int v = CONTRAST_BRIGHTNESS_LEVELS[x];
- uint32_t colour = fb_colour(v * ((y == 1) | (y == 0)),
- v * ((y == 2) | (y == 0)),
- v * ((y == 3) | (y == 0)));
- fb_fill_rectangle(fb, colour,
- x * fb->width / 21,
- y * fb->height / 4,
- (x + 1) * fb->width / 21 - x * fb->width / 21,
- (y + 1) * fb->height / 4 - y * fb->height / 4);
- }
- }
-}
-
-
-/**
- * Draw a seven segment display
- *
- * @param fb The framebuffer to draw on
- * @param colour The intensity of the least intense colour to use
- * @param x The X component of the top left corner of the seven segment display
- * @param y The Y component of the top left corner of the seven segment display
- */
-void draw_digit(framebuffer_t* restrict fb, int colour, uint32_t x, uint32_t y)
-{
- uint32_t c;
-
- c = fb_colour(colour + 0, colour + 0, colour + 0);
- fb_fill_rectangle(fb, c, x + 20, y, 80, 20);
-
- c = fb_colour(colour + 1, colour + 1, colour + 1);
- fb_fill_rectangle(fb, c, x, y + 20, 20, 80);
-
- c = fb_colour(colour + 2, colour + 2, colour + 2);
- fb_fill_rectangle(fb, c, x + 100, y + 20, 20, 80);
-
- c = fb_colour(colour + 3, colour + 3, colour + 3);
- fb_fill_rectangle(fb, c, x + 20, y + 100, 80, 20);
-
- c = fb_colour(colour + 4, colour + 4, colour + 4);
- fb_fill_rectangle(fb, c, x, y + 120, 20, 80);
-
- c = fb_colour(colour + 5, colour + 5, colour + 5);
- fb_fill_rectangle(fb, c, x + 100, y + 120, 20, 80);
-
- c = fb_colour(colour + 6, colour + 6, colour + 6);
- fb_fill_rectangle(fb, c, x + 20, y + 200, 80, 20);
-}
-
-
-/**
- * Manipulate a CRT controllers gamma ramps to display a specific digit
- * for one of the seven segment display on only that CRT controller's
- * monitors
- *
- * @param crtc The CRT controller information
- * @param colour The intensity of the least intense colour in the seven segment display
- * @param value The valud of the digit to display
- */
-void gamma_digit(drm_crtc_t* restrict crtc, int colour, size_t value)
-{
-#define __ 0
- const int DIGITS[11] = { 1 | 2 | 4 | __ | 16 | 32 | 64, /* (0) */
- __ | __ | 4 | __ | __ | 32 | __, /* (1) */
- 1 | __ | 4 | 8 | 16 | __ | 64, /* (2) */
- 1 | __ | 4 | 8 | __ | 32 | 64, /* (3) */
- __ | 2 | 4 | 8 | __ | 32 | __, /* (4) */
- 1 | 2 | __ | 8 | __ | 32 | 64, /* (5) */
- 1 | 2 | __ | 8 | 16 | 32 | 64, /* (6) */
- 1 | __ | 4 | __ | __ | 32 | __, /* (7) */
- 1 | 2 | 4 | 8 | 16 | 32 | 64, /* (8) */
- 1 | 2 | 4 | 8 | __ | 32 | 64, /* (9) */
- __ | __ | __ | __ | __ | __ | __}; /* not visible */
- int i, digit = DIGITS[value];
-
- for (i = 0; i < 7; i++)
- {
- uint16_t c = (digit & (1 << i)) ? 0xFFFF : 0;
- int j = i + colour;
- crtc->red[j] = crtc->green[j] = crtc->blue[j] = c;
- }
-#undef __
-}
-
-
-/**
- * Draw an unique index on each monitor
- *
- * @return Zero on success, -1 on error
- */
-int draw_id(void)
-{
- size_t f, c, id = 0;
- for (f = 0; f < framebuffer_count; f++)
- {
- framebuffer_t* restrict fb = framebuffers + f;
- fb_fill_rectangle(fb, fb_colour(0, 0, 0), 0, 0, fb->width, fb->height);
- draw_digit(fb, 1, 40, 40);
- draw_digit(fb, 8, 180, 40);
- }
- for (c = 0; c < crtc_count; c++)
- {
- drm_crtc_t* restrict crtc = crtcs + c;
- if (drm_get_gamma(crtc) < 0)
- return -1;
- gamma_digit(crtc, 1, id < 10 ? 10 : (id / 10) % 10);
- gamma_digit(crtc, 8, (id / 1) % 10);
- id++;
- if (drm_set_gamma(crtc) < 0)
- return -1;
- }
- return 0;
-}
-
-
-/**
- * Draw squares used as reference when tweeking the gamma correction
- */
-void draw_gamma(void)
-{
- size_t f;
- uint32_t x, y;
- for (f = 0; f < framebuffer_count; f++)
- {
- framebuffer_t* restrict fb = framebuffers + f;
- for (x = 0; x < 4; x++)
- {
- int r = (x == 1) || (x == 0);
- int g = (x == 2) || (x == 0);
- int b = (x == 3) || (x == 0);
- uint32_t background = fb_colour(128 * r, 128 * g, 128 * b);
- uint32_t average = fb_colour(188 * r, 188 * g, 188 * b);
- uint32_t high = fb_colour(255 * r, 255 * g, 255 * b);
- uint32_t low = fb_colour(0, 0, 0);
- uint32_t xoff = x * fb->width / 4;
- fb_fill_rectangle(fb, background, xoff, 0, fb->width / 4, fb->height);
- xoff += (fb->width / 4 - 200) / 2;
- fb_fill_rectangle(fb, high, xoff, 40, 200, 200);
- fb_fill_rectangle(fb, average, xoff + 50, 40, 100, 200);
- fb_fill_rectangle(fb, average, xoff, 280, 200, 200);
- for (y = 0; y < 200; y += 2)
- {
- fb_draw_horizontal_line(fb, high, xoff + 50, 280 + y + 0, 100);
- fb_draw_horizontal_line(fb, low , xoff + 50, 280 + y + 1, 100);
- }
- fb_fill_rectangle(fb, average, xoff, 520, 200, 200);
- fb_fill_rectangle(fb, high, xoff + 50, 520, 100, 200);
- }
- }
-}
-
-
-/**
- * Print a pattern on the screen that can be used when
- * calibrating the convergence
- */
-void draw_convergence(void)
-{
- uint32_t black = fb_colour(0, 0, 0);
- uint32_t white = fb_colour(255, 255, 255);
- uint32_t x, y;
- size_t f;
- for (f = 0; f < framebuffer_count; f++)
- {
- framebuffer_t* restrict fb = framebuffers + f;
- fb_fill_rectangle(fb, black, 0, 0, fb->width, fb->height);
- for (y = 0; y <= fb->height; y += 16)
- {
- if (y == fb->height)
- y = fb->height - 1;
- for (x = 0; x <= fb->width; x += 16)
- {
- if (x == fb->height)
- x = fb->height - 1;
- fb_draw_pixel(fb, white, x, y);
- }
- }
- }
-}
-
-
-/**
- * Print a pattern on the screen that can be used when
- * calibrating the moiré cancellation
- *
- * @param gap The horizontal and vertical gap, in pixels, between the dots
- * @param diagonal Whether to draw dots in a diagonal pattern
- */
-void draw_moire(uint32_t gap, int diagonal)
-{
- uint32_t black = fb_colour(0, 0, 0);
- uint32_t white = fb_colour(255, 255, 255);
- uint32_t x, y, gap2 = gap << 1;
- size_t f;
- gap += (uint32_t)(!diagonal);
- if (diagonal)
- for (f = 0; f < framebuffer_count; f++)
- {
- framebuffer_t* restrict fb = framebuffers + f;
- fb_fill_rectangle(fb, black, 0, 0, fb->width, fb->height);
- for (y = 0; y < fb->height; y += gap)
- for (x = (y % gap2); x < fb->width; x += gap2)
- fb_draw_pixel(fb, white, x, y);
- }
- else
- for (f = 0; f < framebuffer_count; f++)
- {
- framebuffer_t* restrict fb = framebuffers + f;
- fb_fill_rectangle(fb, black, 0, 0, fb->width, fb->height);
- for (y = 0; y < fb->height; y += gap)
- for (x = 0; x < fb->width; x += gap)
- fb_draw_pixel(fb, white, x, y);
- }
-}
-
-
-/**
- * Analyse the monitors calibrations
- *
- * @return Zero on success, -1 on error
- */
-int read_calibs(void)
-{
- size_t c;
- for (c = 0; c < crtc_count; c++)
- {
- if (drm_get_gamma(crtcs + c) < 0)
- return -1;
-
- gamma_analyse(crtcs[c].gamma_stops, crtcs[c].red, gammas[0] + c,
- contrasts[0] + c, brightnesses[0] + c);
- gamma_analyse(crtcs[c].gamma_stops, crtcs[c].green, gammas[1] + c,
- contrasts[1] + c, brightnesses[1] + c);
- gamma_analyse(crtcs[c].gamma_stops, crtcs[c].blue, gammas[2] + c,
- contrasts[2] + c, brightnesses[2] + c);
- }
- return 0;
-}
-
-
-/**
- * Apply the selected calibrations to the monitors
- *
- * @return Zero on success, -1 on error
- */
-int apply_calibs(void)
-{
- size_t c;
- for (c = 0; c < crtc_count; c++)
- {
- gamma_generate(crtcs[c].gamma_stops, crtcs[c].red, gammas[0][c],
- contrasts[0][c], brightnesses[0][c]);
- gamma_generate(crtcs[c].gamma_stops, crtcs[c].green, gammas[1][c],
- contrasts[1][c], brightnesses[1][c]);
- gamma_generate(crtcs[c].gamma_stops, crtcs[c].blue, gammas[2][c],
- contrasts[2][c], brightnesses[2][c]);
-
- if (drm_set_gamma(crtcs + c) < 0)
- return -1;
- }
- return 0;
-}
-
-
-/**
- * Print calibrations into a file
- *
- * @param f The file
- * @return Zero on success, -1 on error
- */
-int save_calibs(FILE* f)
-{
- size_t c;
- for (c = 0; c < crtc_count; c++)
- {
- if (fprintf(f, "# index = %lu\n",
- c) < 0)
- return -1;
-
- if (fprintf(f, "edid = %s\n",
- crtcs[c].edid) < 0)
- return -1;
-
- if (fprintf(f, "brightness = %f:%f:%f\n",
- brightnesses[0][c],
- brightnesses[1][c],
- brightnesses[2][c]) < 0)
- return -1;
-
- if (fprintf(f, "contrast = %f:%f:%f\n",
- contrasts[0][c],
- contrasts[1][c],
- contrasts[2][c]) < 0)
- return -1;
-
- if (fprintf(f, "gamma = %f:%f:%f\n\n",
- gammas[0][c],
- gammas[1][c],
- gammas[2][c]) < 0)
- return -1;
- }
- return 0;
-}
-
-
-int main(int argc, char* argv[])
-{
- FILE* output_file = stdout;
- int tty_configured = 0, rc = 0, in_fork = 0;
- struct termios saved_stty;
- struct termios stty;
- pid_t pid;
-
- if ((argc > 2) || ((argc == 2) && (argv[1][0] == '-')))
- {
- printf("USAGE: %s [output-file]\n", *argv);
- return 0;
- }
-
- if ((acquire_video() < 0) ||
- (tcgetattr(STDIN_FILENO, &saved_stty) < 0) ||
- (tcgetattr(STDIN_FILENO, &stty) < 0))
- goto fail;
-
- stty.c_lflag &= (tcflag_t)~(ICANON | ECHO);
- if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &stty) < 0)
- goto fail;
- tty_configured = 1;
-
- printf("\033[?25l");
- fflush(stdout);
-
- pid = fork();
- if ((pid != (pid_t)-1) && (pid != 0))
- {
- int status;
- retry:
- if (waitpid(pid, &status, 0) != (pid_t)-1)
- rc = !!status;
- else
- {
- if (errno != EINTR)
- perror(*argv);
- goto retry;
- }
- goto done;
- }
- else if (pid == 0)
- in_fork = 1;
-
- printf("\033[H\033[2J");
- printf("Please deactivate any program that dynamically\n");
- printf("applies filters to your monitors' colours\n");
- printf("and remove any existing filters.\n");
- printf("In doubt, you probably do not have any.\n");
- printf("Do not try to calibrate CRT monitors will\n");
- printf("they are cold.\n");
- printf("\n");
- printf("You will be presented with an image on each\n");
- printf("monitor. Please use the control panel on your\n");
- printf("to calibrate the contrast and brightness of\n");
- printf("each monitor. The contrasts adjusts the\n");
- printf("brightness of bright colours, and the\n");
- printf("brightness adjusts the brightness of dim\n");
- printf("colours. All rectangles are of equals size\n");
- printf("and they should be distrint from eachother.\n");
- printf("There should only be a slight difference\n");
- printf("between the two darkest colours for each\n");
- printf("colour. The grey colour does not need to\n");
- printf("be perfectly grey but should be close.\n");
- printf("The brightness should be as high as\n");
- printf("possible without the first square being\n");
- printf("any other colour than black or the two first\n");
- printf("square being too distinct from eachother. The\n");
- printf("contrast should be as high as possible without\n");
- printf("causing distortion.\n");
- printf("\n");
- printf("Press ENTER to continue, and ENTER again when\n");
- printf("your are done.\n");
- fflush(stdout);
-
- while (getchar() != 10)
- ;
-
- printf("\033[H\033[2J");
- fflush(stdout);
- draw_contrast_brightness();
-
- while (getchar() != 10)
- ;
-
- printf("\033[H\033[2J");
- printf("An index will be displayed on each monitor.\n");
- printf("It behoves you to memorise them. They will\n");
- printf("be used in the output when descibing the\n");
- printf("calibrations, and is the index of the monitors\n");
- printf("that are used when changing monitor to\n");
- printf("calibrate.\n");
- printf("\n");
- printf("Press ENTER to continue, and ENTER again when\n");
- printf("your are done.\n");
- fflush(stdout);
-
- while (getchar() != 10)
- ;
-
- printf("\033[H\033[2J");
- fflush(stdout);
- if ((read_calibs() < 0) || (draw_id() < 0))
- goto fail;
-
- while (getchar() != 10)
- ;
-
- if (apply_calibs() < 0)
- goto fail;
-
- printf("\033[H\033[2J");
- printf("You will not be given the opportunity to.\n");
- printf("calibrate your monitors' brightness and\n");
- printf("contrast using software incase your monitors\n");
- printf("could not be sufficiently calibrated using\n");
- printf("hardware.\n");
- printf("\n");
- printf("<Left> and <right> is used to change which\n");
- printf("monitor to calibrate. <Left> switches to the\n");
- printf("previous monitor (one lower in index) and\n");
- printf("<right> switches to the next monitor (one\n");
- printf("higher in index.)\n");
- printf("<Up> and <down> is used to increase and\n");
- printf("descrease the settings. respectively.\n");
- printf("<Shift+b> is used to switch to changing the.\n");
- printf("monitor's brightness and <shift+c> switches\n");
- printf("to contrast.\n");
- printf("<r> is used to switch to changing the red.\n");
- printf("channel, <g> switches to the green channel,\n");
- printf("<b> switches to the blue channel, and <a>\n");
- printf("is used to switch to change all channels.\n");
- printf("\n");
- printf("Press ENTER to continue, and ENTER again when\n");
- printf("your are done.\n");
- fflush(stdout);
-
- while (getchar() != 10)
- ;
-
- printf("\033[H\033[2J");
- fflush(stdout);
- draw_contrast_brightness();
-
- {
- int c, b = 0, at_contrast = 0;
- int red = 1, green = 1, blue = 1;
- size_t mon = 0;
- while ((c = getchar()) != 10)
- {
- if (b)
- {
- b = 0;
- if ((c == 'A') && at_contrast)
- {
- contrasts[0][mon] += (double)red / 100;
- contrasts[1][mon] += (double)green / 100;
- contrasts[2][mon] += (double)blue / 100;
- }
- else if (c == 'A')
- {
- brightnesses[0][mon] += (double)red / 100;
- brightnesses[1][mon] += (double)green / 100;
- brightnesses[2][mon] += (double)blue / 100;
- }
- else if ((c == 'B') && at_contrast)
- {
- contrasts[0][mon] -= (double)red / 100;
- contrasts[1][mon] -= (double)green / 100;
- contrasts[2][mon] -= (double)blue / 100;
- }
- else if (c == 'B')
- {
- brightnesses[0][mon] -= (double)red / 100;
- brightnesses[1][mon] -= (double)green / 100;
- brightnesses[2][mon] -= (double)blue / 100;
- }
- else if (c == 'C')
- mon = (mon + 1) % crtc_count;
- else if (c == 'D')
- mon = (mon == 0 ? crtc_count : mon) - 1;
-
- if ((c == 'A') || (c == 'B'))
- apply_calibs();
- }
- else if (c == '[') b = 1;
- else if (c == 'B') at_contrast = 0;
- else if (c == 'C') at_contrast = 1;
- else if (c == 'r') red = 1, green = 0, blue = 0;
- else if (c == 'g') red = 0, green = 1, blue = 0;
- else if (c == 'b') red = 0, green = 0, blue = 1;
- else if (c == 'a') red = 1, green = 1, blue = 1;
- }
- }
-
- printf("\033[H\033[2J");
- printf("You will now be presented with squares used\n");
- printf("to calibrate the gamma correction. There will\n");
- printf("be four stacks: grey, red, green and blue.\n");
- printf("Each stack has three squares: the upper square\n");
- printf("shows the characterics of how the middle square\n");
- printf("will look if the gamma is too high, and the\n");
- printf("lower shows how the middile will look if the\n");
- printf("gamma is too low. The middle square should\n");
- printf("look like it is one single colour if the gamma\n");
- printf("correction is configured correctly. You may\n");
- printf("have to look from a distance or not focus\n");
- printf("your eyes on the squares to compensate for\n");
- printf("the fact that there actually multiple colours\n");
- printf("is the square.\n");
- printf("The grey should look perfectly grey when you\n");
- printf("are done.\n");
- printf("\n");
- printf("<Left> and <right> is used to change which\n");
- printf("monitor to calibrate. <Left> switches to the\n");
- printf("previous monitor (one lower in index) and\n");
- printf("<right> switches to the next monitor (one\n");
- printf("higher in index.)\n");
- printf("<Up> and <down> is used to increase and\n");
- printf("descrease the gamma. respectively.\n");
- printf("<r> is used to switch to changing the red.\n");
- printf("channel, <g> switches to the green channel,\n");
- printf("<b> switches to the blue channel, and <a>\n");
- printf("is used to switch to change all channels.\n");
- printf("\n");
- printf("Press ENTER to continue, and ENTER again when\n");
- printf("your are done.\n");
- fflush(stdout);
-
- while (getchar() != 10)
- ;
-
- printf("\033[H\033[2J");
- fflush(stdout);
- draw_gamma();
-
- {
- int c, b = 0;
- int red = 1, green = 1, blue = 1;
- size_t mon = 0;
- while ((c = getchar()) != 10)
- {
- if (b)
- {
- b = 0;
- if (c == 'A')
- {
- gammas[0][mon] += (double)red / 100;
- gammas[1][mon] += (double)green / 100;
- gammas[2][mon] += (double)blue / 100;
- }
- else if (c == 'B')
- {
- gammas[0][mon] -= (double)red / 100;
- gammas[1][mon] -= (double)green / 100;
- gammas[2][mon] -= (double)blue / 100;
- if (gammas[0][mon] < 0) gammas[0][mon] = 0;
- if (gammas[1][mon] < 0) gammas[1][mon] = 0;
- if (gammas[2][mon] < 0) gammas[2][mon] = 0;
- }
- else if (c == 'C')
- mon = (mon + 1) % crtc_count;
- else if (c == 'D')
- mon = (mon == 0 ? crtc_count : mon) - 1;
-
- if ((c == 'A') || (c == 'B'))
- apply_calibs();
- }
- else if (c == '[') b = 1;
- else if (c == 'r') red = 1, green = 0, blue = 0;
- else if (c == 'g') red = 0, green = 1, blue = 0;
- else if (c == 'b') red = 0, green = 0, blue = 1;
- else if (c == 'a') red = 1, green = 1, blue = 1;
- }
- }
-
- printf("\033[H\033[2J");
- printf("The next step is to calibrate the monitors'\n");
- printf("convergence settings using the monitors'\n");
- printf("control panel. White dots will be printed on the\n");
- printf("screens, you should try to get as many as\n");
- printf("possible of them to appear as pure white dots\n");
- printf("rather than dots splitted in the red, green and\n");
- printf("blue dots. On most CRT monitors this is not\n");
- printf("possible to get all corners perfect.\n");
- printf("\n");
- printf("Press ENTER to continue, and ENTER again when\n");
- printf("your are done.\n");
- fflush(stdout);
-
- while (getchar() != 10)
- ;
-
- printf("\033[H\033[2J");
- fflush(stdout);
- draw_convergence();
-
- while (getchar() != 10)
- ;
-
- printf("\033[H\033[2J");
- printf("The final step is to calbirate the monitors' moiré\n");
- printf("cancellation. This too is done on the using the\n");
- printf("monitors' control panel.\n");
- printf("\n");
- printf("You can use <d> and the arrow keys to change the\n");
- printf("dot-pattern on the screens.\n");
- printf("\n");
- printf("Press ENTER to continue, and ENTER again when\n");
- printf("your are done.\n");
- fflush(stdout);
-
- while (getchar() != 10)
- ;
-
- printf("\033[H\033[2J");
- fflush(stdout);
- draw_moire(1, 1);
-
- {
- int c, b = 0, d = 1;
- uint32_t gap = 1;
- while ((c = getchar()) != 10)
- {
- if (b)
- {
- b = 0;
- if ((c == 'A') || (c == 'C'))
- draw_moire(++gap, d);
- else if ((c == 'B') || (c == 'D'))
- {
- if (--gap == 0)
- gap = 1;
- draw_moire(gap, d);
- }
- }
- else if (c == '[')
- b = 1;
- else if (c == 'd')
- draw_moire(gap, d ^= 1);
- }
- }
-
- printf("\033[H\033[2J");
- fflush(stdout);
-
- if (argc == 2)
- {
- output_file = fopen(argv[1], "w");
- if (output_file == NULL)
- goto fail;
- }
-
- if (save_calibs(output_file) < 0)
- goto fail;
- fflush(output_file);
-
- if (argc == 2)
- {
- if (fclose(output_file))
- goto fail;
- }
-
- done:
- if (in_fork == 0)
- {
- release_video();
- if (tty_configured)
- tcsetattr(STDIN_FILENO, TCSAFLUSH, &saved_stty);
- printf("\033[?25h");
- fflush(stdout);
- }
- return rc;
- fail:
- perror(*argv);
- rc = 1;
- goto done;
-}
-