X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=src%2Fpngsize.c;h=b8dc35ba67146cd207c752397ca5595dcee75917;hp=e60b6fab0f9f8075b86d02cb2cb04b173e7473c8;hb=2a9b0ff9cf29cf82b7b12ea80889c59273d66008;hpb=0c87c2676bb826f8defb40d7d45e771ecd40550c

diff --git a/src/pngsize.c b/src/pngsize.c
index e60b6fa..b8dc35b 100644
--- a/src/pngsize.c
+++ b/src/pngsize.c
@@ -1,5 +1,5 @@
 /*****************************************************************************
- * RRDtool 1.1.x  Copyright Tobias Oetiker, 1997 - 2002
+ * RRDtool 1.4.2  Copyright by Tobi Oetiker, 1997-2009
  *****************************************************************************
  * pngsize.c  determine the size of a PNG image
  *****************************************************************************/
@@ -7,37 +7,50 @@
 #include <png.h>
 #include "rrd_tool.h"
 
-int
-PngSize(FILE *fd, long *width, long *height)
+int PngSize(
+    FILE * fd,
+    long *width,
+    long *height)
 {
-  png_structp png_read_ptr = 
-    png_create_read_struct(PNG_LIBPNG_VER_STRING, 
-			   (png_voidp)NULL,
-				/* we would need to point to error handlers
-				   here to do it properly */
-			   (png_error_ptr)NULL, (png_error_ptr)NULL);
-    
-  png_infop info_ptr = png_create_info_struct(png_read_ptr);
-
-  (*width)=0;
-  (*height)=0;
-
-  if (setjmp(png_read_ptr->jmpbuf)){
-    png_destroy_read_struct(&png_read_ptr, &info_ptr, (png_infopp)NULL);
-    return 0;
-  }
-
-  png_init_io(png_read_ptr,fd);
-  png_read_info(png_read_ptr, info_ptr);
-  (*width)=png_get_image_width(png_read_ptr, info_ptr);
-  (*height)=png_get_image_height(png_read_ptr, info_ptr);
-  
-  png_destroy_read_struct(&png_read_ptr, &info_ptr, NULL);
-  if (*width >0 && *height >0) 
-    return 1;
-  else
-    return 0;
+    png_structp png_read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING,
+                                                      (png_voidp) NULL,
+                                                      /* we would need to point to error handlers
+                                                         here to do it properly */
+                                                      (png_error_ptr) NULL,
+                                                      (png_error_ptr) NULL);
+
+    png_infop info_ptr = png_create_info_struct(png_read_ptr);
+
+    (*width) = 0;
+    (*height) = 0;
+
+/* this is to make compile on aix work since they seem to define jmpbuf
+   to be _jmpbuf which breaks compilation */
+
+#ifndef png_jmpbuf
+#ifdef PNG_SETJMP_SUPPORTED
+#  define png_jmpbuf(png_ptr)   ((png_ptr)->PNG_jmpbuf)
+#else
+#ifdef jmpbuf
+#undef jmpbuf
+#endif
+#  define png_jmpbuf(png_ptr)   ((png_ptr)->jmpbuf)
+#endif
+#endif
+
+    if (setjmp(png_jmpbuf(png_read_ptr))) {
+        png_destroy_read_struct(&png_read_ptr, &info_ptr, (png_infopp) NULL);
+        return 0;
+    }
+
+    png_init_io(png_read_ptr, fd);
+    png_read_info(png_read_ptr, info_ptr);
+    (*width) = png_get_image_width(png_read_ptr, info_ptr);
+    (*height) = png_get_image_height(png_read_ptr, info_ptr);
+
+    png_destroy_read_struct(&png_read_ptr, &info_ptr, NULL);
+    if (*width > 0 && *height > 0)
+        return 1;
+    else
+        return 0;
 }
-
-
-