From b2dfbdf4d9644c684c938cb2730deab66aa06d9b Mon Sep 17 00:00:00 2001 From: Lars-Dominik Braun Date: Sat, 2 May 2015 21:36:31 +0200 Subject: Move out of subdir --- src/png.c | 226 -------------------------------------------------------------- 1 file changed, 226 deletions(-) delete mode 100755 src/png.c (limited to 'src/png.c') diff --git a/src/png.c b/src/png.c deleted file mode 100755 index e86cfcb..0000000 --- a/src/png.c +++ /dev/null @@ -1,226 +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 . -*/ - - -#include -#include -#include -#include - -#include "config.h" -#include "img.h" -#include "flam3.h" -#include "private.h" - -#ifdef _WIN32 -#include /* for htons */ -#else -#include -#endif - -void write_png(FILE *file, void *image, int width, int height, flam3_img_comments *fpc, int bpc) { - png_structp png_ptr; - png_infop info_ptr; - png_text text[FLAM3_PNG_COM]; - size_t i; - unsigned short testbe = 1; - void **rows = malloc(sizeof(void *) * height); - char *nick = getenv("nick"); - char *url = getenv("url"); - char *id = getenv("id"); - char *ai; /* For argi */ - int pngcom_enable = argi("enable_png_comments", 1); - - text[0].compression = PNG_TEXT_COMPRESSION_NONE; - text[0].key = "flam3_version"; - text[0].text = flam3_version(); - - text[1].compression = PNG_TEXT_COMPRESSION_NONE; - text[1].key = "flam3_nickname"; - text[1].text = nick; - - text[2].compression = PNG_TEXT_COMPRESSION_NONE; - text[2].key = "flam3_url"; - text[2].text = url; - - text[3].compression = PNG_TEXT_COMPRESSION_NONE; - text[3].key = "flam3_id"; - text[3].text = id; - - text[4].compression = PNG_TEXT_COMPRESSION_NONE; - text[4].key = "flam3_error_rate"; - text[4].text = fpc->badvals; - - text[5].compression = PNG_TEXT_COMPRESSION_NONE; - text[5].key = "flam3_samples"; - text[5].text = fpc->numiters; - - text[6].compression = PNG_TEXT_COMPRESSION_NONE; - text[6].key = "flam3_time"; - text[6].text = fpc->rtime; - - text[7].compression = PNG_TEXT_COMPRESSION_zTXt; - text[7].key = "flam3_genome"; - text[7].text = fpc->genome; - - for (i = 0; i < height; i++) - rows[i] = (unsigned char *)image + i * width * 4 * bpc; - - png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, - NULL, NULL, NULL); - info_ptr = png_create_info_struct(png_ptr); - - if (setjmp(png_jmpbuf(png_ptr))) { - fclose(file); - png_destroy_write_struct(&png_ptr, &info_ptr); - perror("writing file"); - return; - } - png_init_io(png_ptr, file); - - png_set_IHDR(png_ptr, info_ptr, width, height, 8*bpc, - PNG_COLOR_TYPE_RGBA, - PNG_INTERLACE_NONE, - PNG_COMPRESSION_TYPE_BASE, - PNG_FILTER_TYPE_BASE); - - if (pngcom_enable==1) - png_set_text(png_ptr, info_ptr, text, FLAM3_PNG_COM); - - png_write_info(png_ptr, info_ptr); - - /* Must set this after the write_info */ - if (2==bpc && testbe != htons(testbe)) { - png_set_swap(png_ptr); - } - - png_write_image(png_ptr, (png_bytepp) rows); - png_write_end(png_ptr, info_ptr); - png_destroy_write_struct(&png_ptr, &info_ptr); - free(rows); - -} - -#define SIG_CHECK_SIZE 8 - -unsigned char *read_png(FILE *ifp, int *width, int *height) { - unsigned char sig_buf [SIG_CHECK_SIZE]; - png_struct *png_ptr; - png_info *info_ptr; - png_byte **png_image = NULL; - unsigned int linesize, x, y; - unsigned char *p, *q; - - if (fread (sig_buf, 1, SIG_CHECK_SIZE, ifp) != SIG_CHECK_SIZE) { - fprintf (stderr, "input file empty or too short\n"); - return 0; - } - if (png_sig_cmp (sig_buf, (png_size_t) 0, (png_size_t) SIG_CHECK_SIZE) != 0) { - fprintf (stderr, "input file not a PNG file\n"); - return 0; - } - - png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - if (png_ptr == NULL) { - fprintf (stderr, "cannot allocate LIBPNG structure\n"); - return 0; - } - if (setjmp(png_jmpbuf(png_ptr))) { - if (png_image) { - for (y = 0 ; y < png_get_image_height(png_ptr, info_ptr) ; y++) - free (png_image[y]); - free (png_image); - } - png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL); - perror("reading file"); - return 0; - } - info_ptr = png_create_info_struct (png_ptr); - if (info_ptr == NULL) { - png_destroy_read_struct (&png_ptr, (png_infopp)NULL, (png_infopp)NULL); - fprintf (stderr, "cannot allocate LIBPNG structures\n"); - return 0; - } - - png_init_io (png_ptr, ifp); - png_set_sig_bytes (png_ptr, SIG_CHECK_SIZE); - png_read_info (png_ptr, info_ptr); - - if (8 != png_get_bit_depth(png_ptr, info_ptr)) { - fprintf(stderr, "bit depth type must be 8, not %d.\n", - png_get_bit_depth(png_ptr, info_ptr)); - return 0; - } - - *width = png_get_image_width(png_ptr, info_ptr); - *height = png_get_image_height(png_ptr, info_ptr); - p = q = malloc(4 * *width * *height); - png_image = (png_byte **)malloc (*height * sizeof (png_byte*)); - - linesize = *width; - switch (png_get_color_type(png_ptr, info_ptr)) { - case PNG_COLOR_TYPE_RGB: - linesize *= 3; - break; - case PNG_COLOR_TYPE_RGBA: - linesize *= 4; - break; - default: - fprintf(stderr, "color type must be RGB or RGBA not %d.\n", - png_get_color_type(png_ptr, info_ptr)); - return 0; - } - - for (y = 0 ; y < *height ; y++) { - png_image[y] = malloc (linesize); - } - png_read_image (png_ptr, png_image); - png_read_end (png_ptr, info_ptr); - - for (y = 0 ; y < *height ; y++) { - unsigned char *s = png_image[y]; - for (x = 0 ; x < *width ; x++) { - - switch (png_get_color_type(png_ptr, info_ptr)) { - case PNG_COLOR_TYPE_RGB: - p[0] = s[0]; - p[1] = s[1]; - p[2] = s[2]; - p[3] = 255; - s += 3; - p += 4; - break; - case PNG_COLOR_TYPE_RGBA: - p[0] = s[0]; - p[1] = s[1]; - p[2] = s[2]; - p[3] = s[3]; - s += 4; - p += 4; - break; - } - } - } - - for (y = 0 ; y < *height ; y++) - free (png_image[y]); - free (png_image); - png_destroy_read_struct (&png_ptr, &info_ptr, (png_infopp)NULL); - - return q; -} -- cgit v1.2.3