Update to libpng 1.6.19
Removes all Android modifications, including
SK_PNG_INDEX_SUPPORTED (for subset decoding).
BUG:23265085
BUG:25424175
Change-Id: Iaa4f6cc9fc6db8e4b46a83211363adfcbf07b589
diff --git a/README b/README
index 57f287b..17484e0 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.6.10 - March 6, 2014 (shared library 16.0)
+README for libpng version 1.6.19 - November 12, 2015 (shared library 16.0)
See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng.
@@ -23,18 +23,25 @@
png_uint_32, which will affect shared-library applications that use
this function.
-To avoid problems with changes to the internals of png_info_struct,
+To avoid problems with changes to the internals of png info_struct,
new APIs have been made available in 0.95 to avoid direct application
access to info_ptr. These functions are the png_set_<chunk> and
png_get_<chunk> functions. These functions should be used when
accessing/storing the info_struct data, rather than manipulating it
directly, to avoid such problems in the future.
-It is important to note that the APIs do not make current programs
+It is important to note that the APIs did not make current programs
that access the info struct directly incompatible with the new
-library. However, it is strongly suggested that new programs use
-the new APIs (as shown in example.c and pngtest.c), and older programs
-be converted to the new format, to facilitate upgrades in the future.
+library, through libpng-1.2.x. In libpng-1.4.x, which was meant to
+be a transitional release, members of the png_struct and the
+info_struct can still be accessed, but the compiler will issue a
+warning about deprecated usage. Since libpng-1.5.0, direct access
+to these structs is not allowed, and the definitions of the structs
+reside in private pngstruct.h and pnginfo.h header files that are not
+accessible to applications. It is strongly suggested that new
+programs use the new APIs (as shown in example.c and pngtest.c), and
+older programs be converted to the new format, to facilitate upgrades
+in the future.
****
Additions since 0.90 include the ability to compile libpng as a
@@ -87,6 +94,12 @@
[DOWNLOAD] area, and at ftp://ftp.simplesystems.org. If you can't find it
in any of those places, e-mail me, and I'll help you find it.
+I am not a lawyer, but I believe that the Export Control Classification
+Number (ECCN) for libpng is EAR99, which means not subject to export
+controls or International Traffic in Arms Regulations (ITAR) because it
+is open source, publicly available software, that does not contain any
+encryption software. See the EAR, paragraphs 734.3(b)(3) and 734.7(b).
+
If you have any code changes, requests, problems, etc., please e-mail
them to me. Also, I'd appreciate any make files or project files,
and any modifications you needed to make to get libpng to compile,
@@ -121,7 +134,7 @@
to others, if necessary.
Please do not send suggestions on how to change PNG. We have
-been discussing PNG for nineteen years now, and it is official and
+been discussing PNG for twenty years now, and it is official and
finished. If you have suggestions for libpng, however, I'll
gladly listen. Even if your suggestion is not used immediately,
it may be used later.
@@ -177,7 +190,7 @@
pngminus => Simple pnm2png and png2pnm programs
pngsuite => Test images
tools => Various tools
- visupng => Contains a MSVC workspace for VisualPng
+ visupng => Contains a MSVC workspace for VisualPng
projects => Contains project files and workspaces for
building a DLL
owatcom => Contains a WATCOM project for building libpng