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Diffstat (limited to 'Build/source/libs/libpng/libpng-1.6.2/contrib/examples/iccfrompng.c')
-rw-r--r-- | Build/source/libs/libpng/libpng-1.6.2/contrib/examples/iccfrompng.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/Build/source/libs/libpng/libpng-1.6.2/contrib/examples/iccfrompng.c b/Build/source/libs/libpng/libpng-1.6.2/contrib/examples/iccfrompng.c deleted file mode 100644 index 67676219e65..00000000000 --- a/Build/source/libs/libpng/libpng-1.6.2/contrib/examples/iccfrompng.c +++ /dev/null @@ -1,180 +0,0 @@ -/*- iccfrompng - * - * COPYRIGHT: Written by John Cunningham Bowler, 2011. - * To the extent possible under law, the author has waived all copyright and - * related or neighboring rights to this work. This work is published from: - * United States. - * - * Extract any icc profiles found in the given PNG files. This is a simple - * example of a program which extracts information from the header of a PNG file - * without processing the image. Notice that some header information may occur - * after the image data, textual data and comments are an example; the approach - * in this file won't work reliably for such data because it only looks for the - * information in the section of the file that preceeds the image data. - * - * Compile and link against libpng and zlib, plus anything else required on the - * system you use. - * - * To use supply a list of PNG files containing iCCP chunks, the chunks will be - * extracted to a similarly named file with the extension replaced by 'icc', - * which will be overwritten without warning. - */ -#include <stdlib.h> -#include <setjmp.h> -#include <string.h> -#include <stdio.h> - -#include <png.h> - -static int verbose = 1; -static png_byte no_profile[] = "no profile"; - -static png_bytep -extract(FILE *fp, png_uint_32 *proflen) -{ - png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING,0,0,0); - png_infop info_ptr = NULL; - png_bytep result = NULL; - - /* Initialize for error or no profile: */ - *proflen = 0; - - if (png_ptr == NULL) - { - fprintf(stderr, "iccfrompng: version library mismatch?\n"); - return 0; - } - - if (setjmp(png_jmpbuf(png_ptr))) - { - png_destroy_read_struct(&png_ptr, &info_ptr, NULL); - return 0; - } - - png_init_io(png_ptr, fp); - - info_ptr = png_create_info_struct(png_ptr); - if (info_ptr == NULL) - png_error(png_ptr, "OOM allocating info structure"); - - png_read_info(png_ptr, info_ptr); - - { - png_charp name; - int compression_type; - png_bytep profile; - - if (png_get_iCCP(png_ptr, info_ptr, &name, &compression_type, &profile, - proflen) & PNG_INFO_iCCP) - { - result = malloc(*proflen); - if (result != NULL) - memcpy(result, profile, *proflen); - - else - png_error(png_ptr, "OOM allocating profile buffer"); - } - - else - result = no_profile; - } - - png_destroy_read_struct(&png_ptr, &info_ptr, NULL); - return result; -} - -static int -extract_one_file(const char *filename) -{ - int result = 0; - FILE *fp = fopen(filename, "rb"); - - if (fp != NULL) - { - png_uint_32 proflen = 0; - png_bytep profile = extract(fp, &proflen); - - if (profile != NULL && profile != no_profile) - { - size_t len; - char *output; - - { - const char *ep = strrchr(filename, '.'); - - if (ep != NULL) - len = ep-filename; - - else - len = strlen(filename); - } - - output = malloc(len + 5); - if (output != NULL) - { - FILE *of; - - memcpy(output, filename, len); - strcpy(output+len, ".icc"); - - of = fopen(output, "wb"); - if (of != NULL) - { - if (fwrite(profile, proflen, 1, of) == 1 && - fflush(of) == 0 && - fclose(of) == 0) - { - if (verbose) - printf("%s -> %s\n", filename, output); - /* Success return */ - result = 1; - } - - else - { - fprintf(stderr, "%s: error writing profile\n", output); - if (remove(output)) - fprintf(stderr, "%s: could not remove file\n", output); - } - } - - else - fprintf(stderr, "%s: failed to open output file\n", output); - - free(output); - } - - else - fprintf(stderr, "%s: OOM allocating string!\n", filename); - - free(profile); - } - - else if (verbose && profile == no_profile) - printf("%s has no profile\n", filename); - } - - else - fprintf(stderr, "%s: could not open file\n", filename); - - return result; -} - -int -main(int argc, char **argv) -{ - int i; - int extracted = 0; - - for (i=1; i<argc; ++i) - { - if (strcmp(argv[i], "-q") == 0) - verbose = 0; - - else if (extract_one_file(argv[i])) - extracted = 1; - } - - /* Exit code is true if any extract succeeds */ - return extracted == 0; -} |