From a7aab3d21ba79628bb89f88a10c19b423aee0ee7 Mon Sep 17 00:00:00 2001
From: divverent <divverent@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Sat, 11 Feb 2012 15:55:36 +0000
Subject: [PATCH] support libpng 1.5.0

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@11677 d7cf8633-e32d-0410-b094-e92efae38249
---
 image_png.c | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/image_png.c b/image_png.c
index 9c03f8f3..e498b9e5 100644
--- a/image_png.c
+++ b/image_png.c
@@ -63,6 +63,7 @@ static unsigned int			(*qpng_access_version_number)		(void); // FIXME is this re
 static void				(*qpng_write_info)			(void*, void*);
 static void				(*qpng_write_row)			(void*, unsigned char*);
 static void				(*qpng_write_end)			(void*, void*);
+static void*				(*qpng_jmpbuf)		(void*);
 
 static dllfunction_t pngfuncs[] =
 {
@@ -99,6 +100,7 @@ static dllfunction_t pngfuncs[] =
 	{"png_write_info",			(void **) &qpng_write_info},
 	{"png_write_row",			(void **) &qpng_write_row},
 	{"png_write_end",			(void **) &qpng_write_end},
+	{"png_jmpbuf",		(void **) &qpng_jmpbuf},
 	{NULL, NULL}
 };
 
@@ -126,13 +128,17 @@ qboolean PNG_OpenLibrary (void)
 	const char* dllnames [] =
 	{
 #if WIN32
+		"libpng15-15.dll",
+		"libpng15.dll",
 		"libpng14-14.dll",
 		"libpng14.dll",
 		"libpng12.dll",
 #elif defined(MACOSX)
+		"libpng15.15.dylib",
 		"libpng14.14.dylib",
 		"libpng12.0.dylib",
 #else
+		"libpng15.so.15", // WTF libtool guidelines anyone?
 		"libpng14.so.14", // WTF libtool guidelines anyone?
 		"libpng12.so.0",
 		"libpng.so", // FreeBSD
@@ -171,6 +177,7 @@ void PNG_CloseLibrary (void)
 
 #define PNG_LIBPNG_VER_STRING_12 "1.2.4"
 #define PNG_LIBPNG_VER_STRING_14 "1.4.0"
+#define PNG_LIBPNG_VER_STRING_15 "1.5.0"
 
 #define PNG_COLOR_MASK_PALETTE    1
 #define PNG_COLOR_MASK_COLOR      2
@@ -273,7 +280,9 @@ unsigned char *PNG_LoadImage_BGRA (const unsigned char *raw, int filesize, int *
 	if(qpng_sig_cmp(raw, 0, filesize))
 		return NULL;
 	png = (void *)qpng_create_read_struct(
-		(qpng_access_version_number() / 100 == 102) ? PNG_LIBPNG_VER_STRING_12 : PNG_LIBPNG_VER_STRING_14, // nasty hack to support both libpng12 and libpng14
+		(qpng_access_version_number() / 100 == 102) ? PNG_LIBPNG_VER_STRING_12 :
+		(qpng_access_version_number() / 100 == 104) ? PNG_LIBPNG_VER_STRING_14 :
+		PNG_LIBPNG_VER_STRING_15, // nasty hack... whatever
 		0, PNG_error_fn, PNG_warning_fn
 	);
 	if(!png)
@@ -285,17 +294,7 @@ unsigned char *PNG_LoadImage_BGRA (const unsigned char *raw, int filesize, int *
 
 	// NOTE: this relies on jmp_buf being the first thing in the png structure
 	// created by libpng! (this is correct for libpng 1.2.x)
-#ifdef __cplusplus
-#ifdef WIN64
-	if (setjmp((_JBTYPE *)png))
-#elif defined(MACOSX) || defined(WIN32)
-	if (setjmp((int *)png))
-#else
-	if (setjmp((__jmp_buf_tag *)png))
-#endif
-#else
-	if (setjmp(png))
-#endif
+	if (setjmp(qpng_jmpbuf(png)))
 	{
 		if (my_png.Data)
 			Mem_Free(my_png.Data);
-- 
2.39.2