diff options
Diffstat (limited to 'jpeg.c')
| -rw-r--r-- | jpeg.c | 145 |
1 files changed, 0 insertions, 145 deletions
@@ -1,145 +0,0 @@ -/* - FLAM3 - cosmic recursive fractal flames - Copyright (C) 1992-2009 Spotworks LLC - - 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 <stdio.h> -#include <stdlib.h> -#include <jpeglib.h> -#include <string.h> - -#include "config.h" -#include "img.h" -#include "flam3.h" -#include "private.h" - -void -write_jpeg(FILE *file, unsigned char *image, int width, int height, flam3_img_comments *fpc) { - struct jpeg_compress_struct info; - struct jpeg_error_mgr jerr; - size_t i; - char *nick = getenv("nick"); - char *url = getenv("url"); - char *id = getenv("id"); - char *ai; /* For argi */ - int jpegcom_enable = argi("enable_jpeg_comments",1); - - char nick_string[64], url_string[128], id_string[128]; - char bv_string[64],ni_string[64],rt_string[64]; - char genome_string[65536], ver_string[64]; - - /* Create the mandatory comment strings */ - snprintf(genome_string,65536,"flam3_genome: %s",fpc->genome); - snprintf(bv_string,64,"flam3_error_rate: %s",fpc->badvals); - snprintf(ni_string,64,"flam3_samples: %s",fpc->numiters); - snprintf(rt_string,64,"flam3_time: %s",fpc->rtime); - snprintf(ver_string,64,"flam3_version: %s",flam3_version()); - - info.err = jpeg_std_error(&jerr); - jpeg_create_compress(&info); - jpeg_stdio_dest(&info, file); - info.in_color_space = JCS_RGB; - info.input_components = 3; - info.image_width = width; - info.image_height = height; - jpeg_set_defaults(&info); - - if (getenv("jpeg")) { - int quality = atoi(getenv("jpeg")); - jpeg_set_quality(&info, quality, TRUE); - } - - jpeg_start_compress(&info, TRUE); - - /* Write comments to jpeg */ - if (jpegcom_enable==1) { - jpeg_write_marker(&info, JPEG_COM, (unsigned char *)ver_string, (int)strlen(ver_string)); - - if (0 != nick) { - snprintf(nick_string,64,"flam3_nickname: %s",nick); - jpeg_write_marker(&info, JPEG_COM, (unsigned char *)nick_string, (int)strlen(nick_string)); - } - - if (0 != url) { - snprintf(url_string,128,"flam3_url: %s",url); - jpeg_write_marker(&info, JPEG_COM, (unsigned char *)url_string, (int)strlen(url_string)); - } - - if (0 != id) { - snprintf(id_string,128,"flam3_id: %s",id); - jpeg_write_marker(&info, JPEG_COM, (unsigned char *)id_string, (int)strlen(id_string)); - } - - jpeg_write_marker(&info, JPEG_COM, (unsigned char *)bv_string, (int)strlen(bv_string)); - jpeg_write_marker(&info, JPEG_COM, (unsigned char *)ni_string, (int)strlen(ni_string)); - jpeg_write_marker(&info, JPEG_COM, (unsigned char *)rt_string, (int)strlen(rt_string)); - jpeg_write_marker(&info, JPEG_COM, (unsigned char *)genome_string, (int)strlen(genome_string)); - } - - for (i = 0; i < height; i++) { - JSAMPROW row_pointer[1]; - row_pointer[0] = (unsigned char *) image + (3 * width * i); - jpeg_write_scanlines(&info, row_pointer, 1); - } - jpeg_finish_compress(&info); - jpeg_destroy_compress(&info); -} - -unsigned char *read_jpeg(FILE *ifp, int *width, int *height) { - struct jpeg_decompress_struct cinfo; - struct jpeg_error_mgr jerr; - int num_scanlines; - unsigned char *p, *q, *t; - - cinfo.err = jpeg_std_error(&jerr); - jpeg_create_decompress(&cinfo); - jpeg_stdio_src(&cinfo, ifp); - (void) jpeg_read_header(&cinfo, TRUE); - (void) jpeg_start_decompress(&cinfo); - - /* or image_width? */ - *width = cinfo.output_width; - *height = cinfo.output_height; - - if (3 != cinfo.output_components) { - printf("can only read RGB JPEG files, not %d components.\n", - cinfo.output_components); - return 0; - } - p = q = malloc(4 * *width * *height); - t = malloc(3 * *width); - - while (cinfo.output_scanline < cinfo.output_height) { - unsigned char *s = t; - int i; - num_scanlines = jpeg_read_scanlines(&cinfo, &t, 1); - for (i = 0; i < *width; i++) { - p[0] = s[0]; - p[1] = s[1]; - p[2] = s[2]; - p[3] = 255; - s += 3; - p += 4; - } - } - - (void) jpeg_finish_decompress(&cinfo); - jpeg_destroy_decompress(&cinfo); - - free(t); - return q; -} |