[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/mips-msa/README b/ap/lib/libpng/libpng-1.6.37/contrib/mips-msa/README
new file mode 100755
index 0000000..10acc93
--- /dev/null
+++ b/ap/lib/libpng/libpng-1.6.37/contrib/mips-msa/README
@@ -0,0 +1,83 @@
+OPERATING SYSTEM SPECIFIC MIPS MSA DETECTION
+--------------------------------------------
+
+Detection of the ability to execute MIPS MSA on an MIPS processor requires
+operating system support. (The information is not available in user mode.)
+
+HOW TO USE THIS
+---------------
+
+This directory contains C code fragments that can be included in mips/mips_init.c
+by setting the macro PNG_MIPS_MSA_FILE to the file name in "" or <> at build
+time. This setting is not recorded in pnglibconf.h and can be changed simply by
+rebuilding mips/msa_init.o with the required macro definition.
+
+For any of this code to be used the MIPS MSA code must be enabled and run time
+checks must be supported. I.e.:
+
+#if PNG_MIPS_MSA_OPT > 0
+#ifdef PNG_MIPS_MSA_CHECK_SUPPORTED
+
+This is done in a 'configure' build by passing configure the argument:
+
+ --enable-mips-msa=check
+
+Apart from the basic Linux implementation in contrib/mips-msa/linux.c this code
+is unsupported. That means that it is not even compiled on a regular basis and
+may be broken in any given minor release.
+
+FILE FORMAT
+-----------
+
+Each file documents its testing status as of the last time it was tested (which
+may have been a long time ago):
+
+STATUS: one of:
+ SUPPORTED: This indicates that the file is included in the regularly
+ performed test builds and bugs are fixed when discovered.
+ COMPILED: This indicates that the code did compile at least once. See the
+ more detailed description for the extent to which the result was
+ successful.
+ TESTED: This means the code was fully compiled into the libpng test programs
+ and these were run at least once.
+
+BUG REPORTS: an email address to which to send reports of problems
+
+The file is a fragment of C code. It should not define any 'extern' symbols;
+everything should be static. It must define the function:
+
+static int png_have_msa(png_structp png_ptr);
+
+That function must return 1 if MIPS MSA instructions are supported, 0 if not.
+It must not execute png_error unless it detects a bug. A png_error will prevent
+the reading of the PNG and in the future, writing too.
+
+BUG REPORTS
+-----------
+
+If you mail a bug report for any file that is not SUPPORTED there may only be
+limited response. Consider fixing it and sending a patch to fix the problem -
+this is more likely to result in action.
+
+CONTRIBUTIONS
+-------------
+
+You may send contributions of new implementations to
+png-mng-implement@sourceforge.net. Please write code in strict C90 C where
+possible. Obviously OS dependencies are to be expected. If you submit code you
+must have the authors permission and it must have a license that is acceptable
+to the current maintainer; in particular that license must permit modification
+and redistribution.
+
+Please try to make the contribution a single file and give the file a clear and
+unambiguous name that identifies the target OS. If multiple files really are
+required put them all in a sub-directory.
+
+You must also be prepared to handle bug reports from users of the code, either
+by joining the png-mng-implement mailing list or by providing an email for the
+"BUG REPORTS" entry or both. Please make sure that the header of the file
+contains the STATUS and BUG REPORTS fields as above.
+
+Please list the OS requirements as precisely as possible. Ideally you should
+also list the environment in which the code has been tested and certainly list
+any environments where you suspect it might not work.
diff --git a/ap/lib/libpng/libpng-1.6.37/contrib/mips-msa/linux.c b/ap/lib/libpng/libpng-1.6.37/contrib/mips-msa/linux.c
new file mode 100755
index 0000000..140215c
--- /dev/null
+++ b/ap/lib/libpng/libpng-1.6.37/contrib/mips-msa/linux.c
@@ -0,0 +1,64 @@
+/* contrib/mips-msa/linux.c
+ *
+ * Copyright (c) 2016 Glenn Randers-Pehrson
+ * Written by Mandar Sahastrabuddhe, 2016.
+ * Last changed in libpng 1.6.25beta03 [August 29, 2016]
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * SEE contrib/mips-msa/README before reporting bugs
+ *
+ * STATUS: SUPPORTED
+ * BUG REPORTS: png-mng-implement@sourceforge.net
+ *
+ * png_have_msa 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>
+
+static int
+png_have_msa(png_structp png_ptr)
+{
+ FILE *f = fopen("/proc/cpuinfo", "rb");
+
+ char *string = "msa";
+ char word[10];
+
+ if (f != NULL)
+ {
+ while(!feof(f))
+ {
+ int ch = fgetc(f);
+ static int i = 0;
+
+ while(!(ch <= 32))
+ {
+ word[i++] = ch;
+ ch = fgetc(f);
+ }
+
+ int val = strcmp(string, word);
+
+ if (val == 0)
+ return 1;
+
+ i = 0;
+ memset(word, 0, 10);
+ }
+
+ fclose(f);
+ }
+#ifdef PNG_WARNINGS_SUPPORTED
+ else
+ png_warning(png_ptr, "/proc/cpuinfo open failed");
+#endif
+ return 0;
+}