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[libng16] Added checksum-icc.c to contrib/libtests

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John Bowler 2012-03-22 07:36:13 -05:00 committed by Glenn Randers-Pehrson
parent f7677a348e
commit 51d1e2be1b
3 changed files with 94 additions and 3 deletions
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5
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.6.0beta20 - March 21, 2012
Libpng 1.6.0beta20 - March 22, 2012
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
@ -339,10 +339,11 @@ Version 1.6.0beta19 [March 18,2012]
Avoid the double gamma correction warning in the simplified API.
This allows the --strict option to pass in the pngstest checks
Version 1.6.0beta20 [March 21, 2012]
Version 1.6.0beta20 [March 22, 2012]
Changed chunk handler warnings into benign errors, incrementally load iCCP
Recognize known sRGB ICC profiles while reading and handle them as if the
sRGB chunk had appeared instead.
Added checksum-icc.c to contrib/libtests
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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3
CHANGES
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@ -4090,10 +4090,11 @@ Version 1.6.0beta19 [March 18, 2012]
Avoid the double gamma correction warning in the simplified API.
This allows the --strict option to pass in the pngstest checks
Version 1.6.0beta20 [March 21, 2012]
Version 1.6.0beta20 [March 22, 2012]
Changed chunk handler warnings into benign errors, incrementally load iCCP
Recognize known sRGB ICC profiles while reading and handle them as if the
sRGB chunk had appeared instead.
Added checksum-icc.c to contrib/libtests
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

89
contrib/libtests/checksum-icc.c Normal file
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@ -0,0 +1,89 @@
/* checksum-icc.c
*
* Copyright (c) 2012 John Cunningham Bowler
*
* Last changed in libpng 1.6.0 [(PENDING RELEASE)]
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
* and license in png.h
*
* Generate crc32 and adler32 checksums of the given input files, used to
* generate check-codes for use when matching ICC profiles within libpng.
*/
#include <stdio.h>
#include <zlib.h>
static int
read_one_file(FILE *ip, const char *name)
{
uLong length = 0;
uLong a32 = adler32(0, NULL, 0);
uLong c32 = crc32(0, NULL, 0);
for (;;)
{
int ch = getc(ip);
Byte b;
if (ch == EOF) break;
b = (Byte)ch;
++length;
a32 = adler32(a32, &b, 1);
c32 = crc32(c32, &b, 1);
}
if (ferror(ip))
return 0;
/* Success */
printf("{ 0x%8.8lx, 0x%8.8lx, %lu, \"%s\" },\n", (unsigned long)a32,
(unsigned long)c32, (unsigned long)length, name);
return 1;
}
int main(int argc, char **argv)
{
int err = 0;
printf("= { /* adler32 crc32 length name */\n");
if (argc > 1)
{
int i;
for (i=1; i<argc; ++i)
{
FILE *ip = fopen(argv[i], "rb");
if (ip == NULL || !read_one_file(ip, argv[i]))
{
err = 1;
perror(argv[i]);
fprintf(stderr, "%s: read error\n", argv[i]);
printf(" { 0, 0, 0, /* ERROR: */, \"%s\" },\n", argv[i]);
}
(void)fclose(ip);
}
}
else
{
if (!read_one_file(stdin, "-"))
{
err = 1;
perror("stdin");
fprintf(stderr, "stdin: read error\n");
printf(" { 0, 0, 0, /* ERROR: */, \"-\" },\n");
}
}
printf("};\n");
return err;
}