[Feature][ZXW-88]merge P50 version
Only Configure: No
Affected branch: master
Affected module: unknown
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: Yes
Doc Update: No
Change-Id: I34667719d9e0e7e29e8e4368848601cde0a48408
diff --git a/ap/lib/libpng/libpng-1.6.37/contrib/powerpc-vsx/linux.c b/ap/lib/libpng/libpng-1.6.37/contrib/powerpc-vsx/linux.c
new file mode 100755
index 0000000..32ed9d7
--- /dev/null
+++ b/ap/lib/libpng/libpng-1.6.37/contrib/powerpc-vsx/linux.c
@@ -0,0 +1,57 @@
+/* contrib/powerpc-vsx/linux.c
+ *
+ * Copyright (c) 2017 Glenn Randers-Pehrson
+ * Written by Vadim Barkov, 2017.
+ * Last changed in libpng 1.6.29 [March 16, 2017]
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * STATUS: TESTED
+ * BUG REPORTS: png-mng-implement@sourceforge.net
+ *
+ * png_have_vsx implemented for Linux by reading the widely available
+ * pseudo-file /proc/cpuinfo.
+ *
+ * This code is strict ANSI-C and is probably moderately portable; it does
+ * however use <stdio.h> and it assumes that /proc/cpuinfo is never localized.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "png.h"
+
+#ifndef MAXLINE
+# define MAXLINE 1024
+#endif
+
+static int
+png_have_vsx(png_structp png_ptr)
+{
+ FILE *f;
+
+ const char *string = "altivec supported";
+ char input[MAXLINE];
+ char *token = NULL;
+
+ PNG_UNUSED(png_ptr)
+
+ f = fopen("/proc/cpuinfo", "r");
+ if (f != NULL)
+ {
+ memset(input,0,MAXLINE);
+ while(fgets(input,MAXLINE,f) != NULL)
+ {
+ token = strstr(input,string);
+ if(token != NULL)
+ return 1;
+ }
+ }
+#ifdef PNG_WARNINGS_SUPPORTED
+ else
+ png_warning(png_ptr, "/proc/cpuinfo open failed");
+#endif
+ return 0;
+}