diff options
Diffstat (limited to 'src/pnm.c')
| -rw-r--r-- | src/pnm.c | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/src/pnm.c b/src/pnm.c deleted file mode 100644 index 86fa738..0000000 --- a/src/pnm.c +++ /dev/null @@ -1,120 +0,0 @@ -/** - * scrotty — Screenshot program for Linux's TTY - * - * Copyright © 2014, 2015 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 "common.h" -#include "pnm.h" -#include "kern.h" - - - -#define LIST_0_9(P) P"0\n", P"1\n", P"2\n", P"3\n", P"4\n", P"5\n", P"6\n", P"7\n", P"8\n", P"9\n" -/** - * [0, 255]-integer-to-text convertion lookup table for faster conversion from - * raw framebuffer data to the PNM format. The values have a whitespace at the - * end for even faster conversion. - * Lines should not be longer than 70 (although most programs will probably - * work even if there are longer lines), therefore the selected whitespace - * is LF (new line). - * - * ASCII has wider support than binary, and is create for version control, - * especifially with one datum per line. - */ -const char* inttable[] = - { - LIST_0_9(""), LIST_0_9("1"), LIST_0_9("2"), LIST_0_9("3"), LIST_0_9("4"), - LIST_0_9("5"), LIST_0_9("6"), LIST_0_9("7"), LIST_0_9("8"), LIST_0_9("9"), - - LIST_0_9("10"), LIST_0_9("11"), LIST_0_9("12"), LIST_0_9("13"), LIST_0_9("14"), - LIST_0_9("15"), LIST_0_9("16"), LIST_0_9("17"), LIST_0_9("18"), LIST_0_9("19"), - - LIST_0_9("20"), LIST_0_9("21"), LIST_0_9("22"), LIST_0_9("23"), LIST_0_9("24"), - "250\n", "251\n", "252\n", "253\n", "254\n", "255\n" - }; - - - -/** - * Create an PNM file. - * - * @param fbfd The file descriptor connected to framebuffer device. - * @param width The width of the image. - * @param height The height of the image. - * @param imgfd The file descriptor connected to conversion process's stdin. - * @param data Additional data for `convert_fb_to_pnm` - * and `convert_fb_to_png`. - * @return Zero on success, -1 on error. - */ -int -save_pnm (int fbfd, long width, long height, int imgfd, void *restrict data) -{ - char buf[8 << 10]; - FILE *file = NULL; - ssize_t got, off; - size_t adjustment; - int saved_errno; - - /* Create a FILE *, for writing, for the image file. */ - file = fdopen (imgfd, "w"); - if (file == NULL) - goto fail; - - /* The PNM image should begin with `P3\n%{width} %{height}\n%{colour max=255}\n`. - ('\n' and ' ' can be exchanged at will.) */ - if (fprintf (file, "P3\n%li %li\n255\n", width, height) < 0) - goto fail; - - /* Convert raw framebuffer data into a PNM image. */ - for (off = 0;;) - { - /* Read data from the framebuffer, we may have up to 3 bytes buffered. */ - got = read (fbfd, buf + off, sizeof (buf) - (size_t)off * sizeof (char)); - if (got < 0) - goto fail; - if (got == 0) - break; - got += off; - - /* Convert read pixels. */ - if (convert_fb_to_pnm (file, buf, (size_t)got, &adjustment, data) < 0) - goto fail; - - /* If we read a whole number of pixels, reset the buffer, otherwise, - move the unconverted bytes to the beginning of the buffer. */ - if (adjustment) - { - off -= (ssize_t)adjustment; - memcpy (buf, buf + off, (size_t)(got - off) * sizeof (char)); - off = got - off; - } - else - off = 0; - } - - /* Close file and return successfully. */ - fflush (file); - fclose (file); - return 0; - - fail: - saved_errno = errno; - if (file != NULL) - fclose (file); - errno = saved_errno; - return -1; -} - |