From: Laurent Mertens <laurent.mertens@kuleuven.be>
Date: Thu, 20 May 2021 14:56:40 +0000 (+0200)
Subject: Update for recent libpng
X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=commitdiff_plain;ds=inline;p=svrt.git

Update for recent libpng
---

diff --git a/Makefile b/Makefile
index 13a74cc..45cfebd 100644
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,7 @@
 #  You should have received a copy of the GNU General Public License
 #  along with svrt.  If not, see <http://www.gnu.org/licenses/>.
 
-LDFLAGS=-lm -ljpeg -lpng12
+LDFLAGS=-lm -ljpeg -lpng
 
 ifeq ($(DEBUG),yes)
   OPTIMIZE_FLAG = -ggdb3 -DDEBUG -fno-omit-frame-pointer
diff --git a/rgb_image.cc b/rgb_image.cc
index edb28eb..f9b01c4 100644
--- a/rgb_image.cc
+++ b/rgb_image.cc
@@ -25,7 +25,7 @@
 #include <iostream>
 #include <stdio.h>
 
-#include <libpng12/png.h>
+#include <libpng/png.h>
 #include "jpeg_misc.h"
 
 #include "rgb_image.h"
@@ -145,13 +145,13 @@ void RGBImage::read_png(const char *name) {
   png_set_sig_bytes(png_ptr, header_size);
   png_read_info(png_ptr, info_ptr);
 
-  _width = info_ptr->width;
-  _height = info_ptr->height;
+  _width = png_get_image_width(png_ptr, info_ptr);
+  _height = png_get_image_height(png_ptr, info_ptr);
 
   png_byte bit_depth, color_type, channels;
-  color_type = info_ptr->color_type;
-  bit_depth = info_ptr->bit_depth;
-  channels = info_ptr->channels;
+  color_type = png_get_color_type(png_ptr, info_ptr);
+  bit_depth = png_get_bit_depth(png_ptr, info_ptr);
+  channels = png_get_channels(png_ptr, info_ptr);
 
   if(bit_depth != 8) {
     cerr << "Can only read 8-bits PNG images." << endl;
@@ -161,7 +161,7 @@ void RGBImage::read_png(const char *name) {
   // allocate image pointer
   row_pointers = (png_bytep*) malloc(sizeof(png_bytep) * _height);
   for (int y = 0; y < _height; y++)
-    row_pointers[y] = (png_byte*) malloc(info_ptr->rowbytes);
+    row_pointers[y] = (png_byte*) malloc(png_get_rowbytes(png_ptr, info_ptr));
 
   allocate();
 
@@ -266,7 +266,7 @@ void RGBImage::write_png(const char *name) {
   // allocate memory
   row_pointers = (png_bytep*) malloc(sizeof(png_bytep) * _height);
   for (int y = 0; y < _height; y++)
-    row_pointers[y] = (png_byte*) malloc(info_ptr->rowbytes);
+    row_pointers[y] = (png_byte*) malloc(png_get_rowbytes(png_ptr, info_ptr));
 
   int k;
   for (int y = 0; y < _height; y++) {