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update libpng

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update libpng, the repo now requires a vcpkg setup for integrating but skipping the install step should allow it to work for windows an linux, mac might need more
This commit is contained in:
marauder2k7 2025-12-31 20:11:14 +00:00
parent c593d860a0
commit 5d644b4ffb
300 changed files with 25573 additions and 17698 deletions
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34
Engine/lib/lpng/contrib/examples/pngtopng.c
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@ -5,13 +5,11 @@
* related or neighboring rights to this work. This work is published from:
* United States.
*
* Last changed in libpng 1.6.29 [March 16, 2017]
*
* Read a PNG and write it out in a fixed format, using the 'simplified API'
* that was introduced in libpng-1.6.0.
*
* This sample code is just the code from the top of 'example.c' with some error
* handling added. See example.c for more comments.
* This sample code is just the code from 'example.c' with some error handling
* added. See example.c in the top-level libpng directory for more comments.
*/
#include <stddef.h>
#include <stdlib.h>
@ -22,10 +20,15 @@
* ensure the code picks up the local libpng implementation:
*/
#include "../../png.h"
#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) && \
defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
int main(int argc, const char **argv)
#if !defined(PNG_SIMPLIFIED_READ_SUPPORTED) || \
!defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
#error This program requires libpng supporting the simplified read/write API
#endif
int
main(int argc, const char **argv)
{
int result = 1;
@ -50,22 +53,22 @@ int main(int argc, const char **argv)
if (buffer != NULL)
{
if (png_image_finish_read(&image, NULL/*background*/, buffer,
0/*row_stride*/, NULL/*colormap for PNG_FORMAT_FLAG_COLORMAP */))
if (png_image_finish_read(&image, NULL /*background*/, buffer,
0 /*row_stride*/, NULL /*colormap */))
{
if (png_image_write_to_file(&image, argv[2],
0/*convert_to_8bit*/, buffer, 0/*row_stride*/,
NULL/*colormap*/))
if (png_image_write_to_file(
&image, argv[2], 0 /*convert_to_8bit*/, buffer,
0 /*row_stride*/, NULL /*colormap*/))
result = 0;
else
fprintf(stderr, "pngtopng: write %s: %s\n", argv[2],
image.message);
image.message);
}
else
fprintf(stderr, "pngtopng: read %s: %s\n", argv[1],
image.message);
image.message);
free(buffer);
}
@ -73,7 +76,7 @@ int main(int argc, const char **argv)
else
{
fprintf(stderr, "pngtopng: out of memory: %lu bytes\n",
(unsigned long)PNG_IMAGE_SIZE(image));
(unsigned long)PNG_IMAGE_SIZE(image));
/* This is the only place where a 'free' is required; libpng does
* the cleanup on error and success, but in this case we couldn't
@ -95,4 +98,3 @@ int main(int argc, const char **argv)
return result;
}
#endif /* READ && WRITE */