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-rw-r--r--package/libpng/Makefile4
-rw-r--r--package/libpng/patches/libpng-1.6.22-apng.patch (renamed from package/libpng/patches/libpng-1.6.19-apng.patch)1486
2 files changed, 773 insertions, 717 deletions
diff --git a/package/libpng/Makefile b/package/libpng/Makefile
index 9ba92e60d..8026f9ae5 100644
--- a/package/libpng/Makefile
+++ b/package/libpng/Makefile
@@ -4,9 +4,9 @@
include ${ADK_TOPDIR}/rules.mk
PKG_NAME:= libpng
-PKG_VERSION:= 1.6.20
+PKG_VERSION:= 1.6.22
PKG_RELEASE:= 1
-PKG_HASH:= 55c5959e9f3484d96141a3226c53bc9da42a4845e70879d3e1d6e94833d1918b
+PKG_HASH:= 6b5a6ad5c5801ec4d24aacc87a0ed7b666cd586478174f69368a1d7747715226
PKG_DESCR:= library for reading/writing png images
PKG_SECTION:= libs/image
PKG_DEPENDS:= zlib
diff --git a/package/libpng/patches/libpng-1.6.19-apng.patch b/package/libpng/patches/libpng-1.6.22-apng.patch
index 6a3f862b3..66440b70f 100644
--- a/package/libpng/patches/libpng-1.6.19-apng.patch
+++ b/package/libpng/patches/libpng-1.6.22-apng.patch
@@ -1,147 +1,129 @@
-diff -Naru libpng-1.6.19.org/png.h libpng-1.6.19/png.h
---- libpng-1.6.19.org/png.h 2015-11-15 22:34:42.407615478 +0900
-+++ libpng-1.6.19/png.h 2015-11-15 22:34:42.476617887 +0900
-@@ -334,6 +334,10 @@
- # include "pnglibconf.h"
- #endif
+Index: LICENSE
+===================================================================
+--- LICENSE
++++ LICENSE
+@@ -8,6 +8,12 @@
+ If you modify libpng you may insert additional notices immediately following
+ this sentence.
-+#define PNG_APNG_SUPPORTED
-+#define PNG_READ_APNG_SUPPORTED
-+#define PNG_WRITE_APNG_SUPPORTED
++This modified version of libpng code adds animated PNG support and is
++released under the libpng license described below. The modifications are
++Copyright (c) 2006-2007 Andrew Smith, Copyright (c) 2008-2016 Max Stepin,
++and are delimited by "#ifdef PNG_APNG_SUPPORTED / #endif" directives
++surrounding them in the modified libpng source files.
+
- #ifndef PNG_VERSION_INFO_ONLY
- /* Machine specific configuration. */
- # include "pngconf.h"
-@@ -429,6 +433,17 @@
- * See pngconf.h for base types that vary by machine/system
- */
+ This code is released under the libpng license.
-+#ifdef PNG_APNG_SUPPORTED
-+/* dispose_op flags from inside fcTL */
-+#define PNG_DISPOSE_OP_NONE 0x00
-+#define PNG_DISPOSE_OP_BACKGROUND 0x01
-+#define PNG_DISPOSE_OP_PREVIOUS 0x02
-+
-+/* blend_op flags from inside fcTL */
-+#define PNG_BLEND_OP_SOURCE 0x00
-+#define PNG_BLEND_OP_OVER 0x01
-+#endif /* PNG_APNG_SUPPORTED */
-+
- /* This triggers a compiler error in png.c, if png.c and png.h
- * do not agree upon the version number.
- */
-@@ -750,6 +765,10 @@
- #define PNG_INFO_sCAL 0x4000 /* ESR, 1.0.6 */
- #if INT_MAX >= 0x8000 /* else this might break */
- #define PNG_INFO_IDAT 0x8000 /* ESR, 1.0.6 */
-+#ifdef PNG_APNG_SUPPORTED
-+#define PNG_INFO_acTL 0x10000
-+#define PNG_INFO_fcTL 0x20000
+ libpng versions 1.0.7, July 1, 2000 through 1.6.22, May 26, 2016 are
+Index: pngread.c
+===================================================================
+--- pngread.c
++++ pngread.c
+@@ -158,6 +158,9 @@
+
+ else if (chunk_name == png_IDAT)
+ {
++#ifdef PNG_READ_APNG_SUPPORTED
++ png_have_info(png_ptr, info_ptr);
+#endif
+ png_ptr->idat_size = length;
+ break;
+ }
+@@ -247,6 +250,17 @@
+ png_handle_iTXt(png_ptr, info_ptr, length);
#endif
- /* This is used for the transformation routines, as some of them
-@@ -788,6 +807,10 @@
- #ifdef PNG_PROGRESSIVE_READ_SUPPORTED
- typedef PNG_CALLBACK(void, *png_progressive_info_ptr, (png_structp, png_infop));
- typedef PNG_CALLBACK(void, *png_progressive_end_ptr, (png_structp, png_infop));
-+#ifdef PNG_APNG_SUPPORTED
-+typedef PNG_CALLBACK(void, *png_progressive_frame_ptr, (png_structp,
-+ png_uint_32));
++#ifdef PNG_READ_APNG_SUPPORTED
++ else if (chunk_name == png_acTL)
++ png_handle_acTL(png_ptr, info_ptr, length);
++
++ else if (chunk_name == png_fcTL)
++ png_handle_fcTL(png_ptr, info_ptr, length);
++
++ else if (chunk_name == png_fdAT)
++ png_handle_fdAT(png_ptr, info_ptr, length);
+#endif
++
+ else
+ png_handle_unknown(png_ptr, info_ptr, length,
+ PNG_HANDLE_CHUNK_AS_DEFAULT);
+@@ -254,6 +268,72 @@
+ }
+ #endif /* SEQUENTIAL_READ */
- /* The following callback receives png_uint_32 row_number, int pass for the
- * png_bytep data of the row. When transforming an interlaced image the
-@@ -3108,6 +3131,74 @@
- /*******************************************************************************
- * END OF HARDWARE AND SOFTWARE OPTIONS
- ******************************************************************************/
-+#ifdef PNG_APNG_SUPPORTED
-+PNG_EXPORT(245, png_uint_32, png_get_acTL, (png_structp png_ptr,
-+ png_infop info_ptr, png_uint_32 *num_frames, png_uint_32 *num_plays));
++#ifdef PNG_READ_APNG_SUPPORTED
++void PNGAPI
++png_read_frame_head(png_structp png_ptr, png_infop info_ptr)
++{
++ png_byte have_chunk_after_DAT; /* after IDAT or after fdAT */
+
-+PNG_EXPORT(246, png_uint_32, png_set_acTL, (png_structp png_ptr,
-+ png_infop info_ptr, png_uint_32 num_frames, png_uint_32 num_plays));
++ png_debug(0, "Reading frame head");
+
-+PNG_EXPORT(247, png_uint_32, png_get_num_frames, (png_structp png_ptr,
-+ png_infop info_ptr));
++ if ((png_ptr->mode & PNG_HAVE_acTL) == 0)
++ png_error(png_ptr, "attempt to png_read_frame_head() but "
++ "no acTL present");
+
-+PNG_EXPORT(248, png_uint_32, png_get_num_plays, (png_structp png_ptr,
-+ png_infop info_ptr));
++ /* do nothing for the main IDAT */
++ if (png_ptr->num_frames_read == 0)
++ return;
+
-+PNG_EXPORT(249, png_uint_32, png_get_next_frame_fcTL,
-+ (png_structp png_ptr, png_infop info_ptr, png_uint_32 *width,
-+ png_uint_32 *height, png_uint_32 *x_offset, png_uint_32 *y_offset,
-+ png_uint_16 *delay_num, png_uint_16 *delay_den, png_byte *dispose_op,
-+ png_byte *blend_op));
++ png_read_reset(png_ptr);
++ png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
++ png_ptr->mode &= ~PNG_HAVE_fcTL;
+
-+PNG_EXPORT(250, png_uint_32, png_set_next_frame_fcTL,
-+ (png_structp png_ptr, png_infop info_ptr, png_uint_32 width,
-+ png_uint_32 height, png_uint_32 x_offset, png_uint_32 y_offset,
-+ png_uint_16 delay_num, png_uint_16 delay_den, png_byte dispose_op,
-+ png_byte blend_op));
++ have_chunk_after_DAT = 0;
++ for (;;)
++ {
++ png_uint_32 length = png_read_chunk_header(png_ptr);
+
-+PNG_EXPORT(251, png_uint_32, png_get_next_frame_width,
-+ (png_structp png_ptr, png_infop info_ptr));
-+PNG_EXPORT(252, png_uint_32, png_get_next_frame_height,
-+ (png_structp png_ptr, png_infop info_ptr));
-+PNG_EXPORT(253, png_uint_32, png_get_next_frame_x_offset,
-+ (png_structp png_ptr, png_infop info_ptr));
-+PNG_EXPORT(254, png_uint_32, png_get_next_frame_y_offset,
-+ (png_structp png_ptr, png_infop info_ptr));
-+PNG_EXPORT(255, png_uint_16, png_get_next_frame_delay_num,
-+ (png_structp png_ptr, png_infop info_ptr));
-+PNG_EXPORT(256, png_uint_16, png_get_next_frame_delay_den,
-+ (png_structp png_ptr, png_infop info_ptr));
-+PNG_EXPORT(257, png_byte, png_get_next_frame_dispose_op,
-+ (png_structp png_ptr, png_infop info_ptr));
-+PNG_EXPORT(258, png_byte, png_get_next_frame_blend_op,
-+ (png_structp png_ptr, png_infop info_ptr));
-+PNG_EXPORT(259, png_byte, png_get_first_frame_is_hidden,
-+ (png_structp png_ptr, png_infop info_ptr));
-+PNG_EXPORT(260, png_uint_32, png_set_first_frame_is_hidden,
-+ (png_structp png_ptr, png_infop info_ptr, png_byte is_hidden));
++ if (png_ptr->chunk_name == png_IDAT)
++ {
++ /* discard trailing IDATs for the first frame */
++ if (have_chunk_after_DAT != 0 || png_ptr->num_frames_read > 1)
++ png_error(png_ptr, "png_read_frame_head(): out of place IDAT");
++ png_crc_finish(png_ptr, length);
++ }
+
-+#ifdef PNG_READ_APNG_SUPPORTED
-+PNG_EXPORT(261, void, png_read_frame_head, (png_structp png_ptr,
-+ png_infop info_ptr));
-+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-+PNG_EXPORT(262, void, png_set_progressive_frame_fn, (png_structp png_ptr,
-+ png_progressive_frame_ptr frame_info_fn,
-+ png_progressive_frame_ptr frame_end_fn));
-+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-+#endif /* PNG_READ_APNG_SUPPORTED */
++ else if (png_ptr->chunk_name == png_fcTL)
++ {
++ png_handle_fcTL(png_ptr, info_ptr, length);
++ have_chunk_after_DAT = 1;
++ }
+
-+#ifdef PNG_WRITE_APNG_SUPPORTED
-+PNG_EXPORT(263, void, png_write_frame_head, (png_structp png_ptr,
-+ png_infop info_ptr, png_bytepp row_pointers,
-+ png_uint_32 width, png_uint_32 height,
-+ png_uint_32 x_offset, png_uint_32 y_offset,
-+ png_uint_16 delay_num, png_uint_16 delay_den, png_byte dispose_op,
-+ png_byte blend_op));
++ else if (png_ptr->chunk_name == png_fdAT)
++ {
++ png_ensure_sequence_number(png_ptr, length);
+
-+PNG_EXPORT(264, void, png_write_frame_tail, (png_structp png_ptr,
-+ png_infop info_ptr));
-+#endif /* PNG_WRITE_APNG_SUPPORTED */
-+#endif /* PNG_APNG_SUPPORTED */
-
- /* Maintainer: Put new public prototypes here ^, in libpng.3, in project
- * defs, and in scripts/symbols.def.
-@@ -3117,7 +3208,11 @@
- * one to use is one more than this.)
- */
- #ifdef PNG_EXPORT_LAST_ORDINAL
-+#ifdef PNG_APNG_SUPPORTED
-+ PNG_EXPORT_LAST_ORDINAL(264);
-+#else
- PNG_EXPORT_LAST_ORDINAL(244);
-+#endif /* PNG_APNG_SUPPORTED */
- #endif
-
- #ifdef __cplusplus
-diff -Naru libpng-1.6.19.org/pngget.c libpng-1.6.19/pngget.c
---- libpng-1.6.19.org/pngget.c 2015-11-15 22:34:42.408615513 +0900
-+++ libpng-1.6.19/pngget.c 2015-11-15 22:34:42.476617887 +0900
++ /* discard trailing fdATs for frames other than the first */
++ if (have_chunk_after_DAT == 0 && png_ptr->num_frames_read > 1)
++ png_crc_finish(png_ptr, length - 4);
++ else if(png_ptr->mode & PNG_HAVE_fcTL)
++ {
++ png_ptr->idat_size = length - 4;
++ png_ptr->mode |= PNG_HAVE_IDAT;
++
++ break;
++ }
++ else
++ png_error(png_ptr, "png_read_frame_head(): out of place fdAT");
++ }
++ else
++ {
++ png_warning(png_ptr, "Skipped (ignored) a chunk "
++ "between APNG chunks");
++ png_crc_finish(png_ptr, length);
++ }
++ }
++}
++#endif /* READ_APNG */
++
+ /* Optional call to update the users info_ptr structure */
+ void PNGAPI
+ png_read_update_info(png_structrp png_ptr, png_inforp info_ptr)
+Index: pngget.c
+===================================================================
+--- pngget.c
++++ pngget.c
@@ -1216,4 +1216,166 @@
# endif
#endif
@@ -154,7 +136,7 @@ diff -Naru libpng-1.6.19.org/pngget.c libpng-1.6.19/pngget.c
+ png_debug1(1, "in %s retrieval function", "acTL");
+
+ if (png_ptr != NULL && info_ptr != NULL &&
-+ (info_ptr->valid & PNG_INFO_acTL) &&
++ (info_ptr->valid & PNG_INFO_acTL) != 0 &&
+ num_frames != NULL && num_plays != NULL)
+ {
+ *num_frames = info_ptr->num_frames;
@@ -195,7 +177,7 @@ diff -Naru libpng-1.6.19.org/pngget.c libpng-1.6.19/pngget.c
+ png_debug1(1, "in %s retrieval function", "fcTL");
+
+ if (png_ptr != NULL && info_ptr != NULL &&
-+ (info_ptr->valid & PNG_INFO_fcTL) &&
++ (info_ptr->valid & PNG_INFO_fcTL) != 0 &&
+ width != NULL && height != NULL &&
+ x_offset != NULL && y_offset != NULL &&
+ delay_num != NULL && delay_den != NULL &&
@@ -307,11 +289,292 @@ diff -Naru libpng-1.6.19.org/pngget.c libpng-1.6.19/pngget.c
+
+ return 0;
+}
-+#endif /* PNG_APNG_SUPPORTED */
++#endif /* APNG */
#endif /* READ || WRITE */
-diff -Naru libpng-1.6.19.org/pnginfo.h libpng-1.6.19/pnginfo.h
---- libpng-1.6.19.org/pnginfo.h 2015-11-15 22:34:42.408615513 +0900
-+++ libpng-1.6.19/pnginfo.h 2015-11-15 22:34:42.477617922 +0900
+Index: png.c
+===================================================================
+--- png.c
++++ png.c
+@@ -775,17 +775,21 @@
+ #else
+ # ifdef __STDC__
+ return PNG_STRING_NEWLINE \
+- "libpng version 1.6.22 - May 26, 2016" PNG_STRING_NEWLINE \
++ "libpng version 1.6.22+apng - May 26, 2016" PNG_STRING_NEWLINE \
+ "Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson" \
+ PNG_STRING_NEWLINE \
+ "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
+ "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
+- PNG_STRING_NEWLINE;
++ PNG_STRING_NEWLINE \
++ "Portions Copyright (c) 2006-2007 Andrew Smith" PNG_STRING_NEWLINE \
++ "Portions Copyright (c) 2008-2016 Max Stepin" PNG_STRING_NEWLINE ;
+ # else
+- return "libpng version 1.6.22 - May 26, 2016\
++ return "libpng version 1.6.22+apng - May 26, 2016\
+ Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson\
+ Copyright (c) 1996-1997 Andreas Dilger\
+- Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
++ Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\
++ Portions Copyright (c) 2006-2007 Andrew Smith\
++ Portions Copyright (c) 2008-2016 Max Stepin";
+ # endif
+ #endif
+ }
+Index: png.h
+===================================================================
+--- png.h
++++ png.h
+@@ -23,6 +23,12 @@
+ * If you modify libpng you may insert additional notices immediately following
+ * this sentence.
+ *
++ * This modified version of libpng code adds animated PNG support and is
++ * released under the libpng license described below. The modifications are
++ * Copyright (c) 2006-2007 Andrew Smith, Copyright (c) 2008-2016 Max Stepin,
++ * and are delimited by "#ifdef PNG_APNG_SUPPORTED / #endif" directives
++ * surrounding them in the modified libpng source files.
++ *
+ * This code is released under the libpng license.
+ *
+ * Some files in the "contrib" directory and some configure-generated
+@@ -313,9 +319,9 @@
+ */
+
+ /* Version information for png.h - this should match the version in png.c */
+-#define PNG_LIBPNG_VER_STRING "1.6.22"
++#define PNG_LIBPNG_VER_STRING "1.6.22+apng"
+ #define PNG_HEADER_VERSION_STRING \
+- " libpng version 1.6.22 - May 26, 2016\n"
++ " libpng version 1.6.22+apng - May 26, 2016\n"
+
+ #define PNG_LIBPNG_VER_SONUM 16
+ #define PNG_LIBPNG_VER_DLLNUM 16
+@@ -366,6 +372,10 @@
+ # include "pnglibconf.h"
+ #endif
+
++#define PNG_APNG_SUPPORTED
++#define PNG_READ_APNG_SUPPORTED
++#define PNG_WRITE_APNG_SUPPORTED
++
+ #ifndef PNG_VERSION_INFO_ONLY
+ /* Machine specific configuration. */
+ # include "pngconf.h"
+@@ -461,6 +471,17 @@
+ * See pngconf.h for base types that vary by machine/system
+ */
+
++#ifdef PNG_APNG_SUPPORTED
++/* dispose_op flags from inside fcTL */
++#define PNG_DISPOSE_OP_NONE 0x00
++#define PNG_DISPOSE_OP_BACKGROUND 0x01
++#define PNG_DISPOSE_OP_PREVIOUS 0x02
++
++/* blend_op flags from inside fcTL */
++#define PNG_BLEND_OP_SOURCE 0x00
++#define PNG_BLEND_OP_OVER 0x01
++#endif /* APNG */
++
+ /* This triggers a compiler error in png.c, if png.c and png.h
+ * do not agree upon the version number.
+ */
+@@ -781,6 +802,10 @@
+ #define PNG_INFO_sPLT 0x2000U /* ESR, 1.0.6 */
+ #define PNG_INFO_sCAL 0x4000U /* ESR, 1.0.6 */
+ #define PNG_INFO_IDAT 0x8000U /* ESR, 1.0.6 */
++#ifdef PNG_APNG_SUPPORTED
++#define PNG_INFO_acTL 0x10000
++#define PNG_INFO_fcTL 0x20000
++#endif
+
+ /* This is used for the transformation routines, as some of them
+ * change these values for the row. It also should enable using
+@@ -818,6 +843,10 @@
+ #ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+ typedef PNG_CALLBACK(void, *png_progressive_info_ptr, (png_structp, png_infop));
+ typedef PNG_CALLBACK(void, *png_progressive_end_ptr, (png_structp, png_infop));
++#ifdef PNG_APNG_SUPPORTED
++typedef PNG_CALLBACK(void, *png_progressive_frame_ptr, (png_structp,
++ png_uint_32));
++#endif
+
+ /* The following callback receives png_uint_32 row_number, int pass for the
+ * png_bytep data of the row. When transforming an interlaced image the
+@@ -3237,6 +3266,75 @@
+ * END OF HARDWARE AND SOFTWARE OPTIONS
+ ******************************************************************************/
+
++#ifdef PNG_APNG_SUPPORTED
++PNG_EXPORT(245, png_uint_32, png_get_acTL, (png_structp png_ptr,
++ png_infop info_ptr, png_uint_32 *num_frames, png_uint_32 *num_plays));
++
++PNG_EXPORT(246, png_uint_32, png_set_acTL, (png_structp png_ptr,
++ png_infop info_ptr, png_uint_32 num_frames, png_uint_32 num_plays));
++
++PNG_EXPORT(247, png_uint_32, png_get_num_frames, (png_structp png_ptr,
++ png_infop info_ptr));
++
++PNG_EXPORT(248, png_uint_32, png_get_num_plays, (png_structp png_ptr,
++ png_infop info_ptr));
++
++PNG_EXPORT(249, png_uint_32, png_get_next_frame_fcTL,
++ (png_structp png_ptr, png_infop info_ptr, png_uint_32 *width,
++ png_uint_32 *height, png_uint_32 *x_offset, png_uint_32 *y_offset,
++ png_uint_16 *delay_num, png_uint_16 *delay_den, png_byte *dispose_op,
++ png_byte *blend_op));
++
++PNG_EXPORT(250, png_uint_32, png_set_next_frame_fcTL,
++ (png_structp png_ptr, png_infop info_ptr, png_uint_32 width,
++ png_uint_32 height, png_uint_32 x_offset, png_uint_32 y_offset,
++ png_uint_16 delay_num, png_uint_16 delay_den, png_byte dispose_op,
++ png_byte blend_op));
++
++PNG_EXPORT(251, png_uint_32, png_get_next_frame_width,
++ (png_structp png_ptr, png_infop info_ptr));
++PNG_EXPORT(252, png_uint_32, png_get_next_frame_height,
++ (png_structp png_ptr, png_infop info_ptr));
++PNG_EXPORT(253, png_uint_32, png_get_next_frame_x_offset,
++ (png_structp png_ptr, png_infop info_ptr));
++PNG_EXPORT(254, png_uint_32, png_get_next_frame_y_offset,
++ (png_structp png_ptr, png_infop info_ptr));
++PNG_EXPORT(255, png_uint_16, png_get_next_frame_delay_num,
++ (png_structp png_ptr, png_infop info_ptr));
++PNG_EXPORT(256, png_uint_16, png_get_next_frame_delay_den,
++ (png_structp png_ptr, png_infop info_ptr));
++PNG_EXPORT(257, png_byte, png_get_next_frame_dispose_op,
++ (png_structp png_ptr, png_infop info_ptr));
++PNG_EXPORT(258, png_byte, png_get_next_frame_blend_op,
++ (png_structp png_ptr, png_infop info_ptr));
++PNG_EXPORT(259, png_byte, png_get_first_frame_is_hidden,
++ (png_structp png_ptr, png_infop info_ptr));
++PNG_EXPORT(260, png_uint_32, png_set_first_frame_is_hidden,
++ (png_structp png_ptr, png_infop info_ptr, png_byte is_hidden));
++
++#ifdef PNG_READ_APNG_SUPPORTED
++PNG_EXPORT(261, void, png_read_frame_head, (png_structp png_ptr,
++ png_infop info_ptr));
++#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
++PNG_EXPORT(262, void, png_set_progressive_frame_fn, (png_structp png_ptr,
++ png_progressive_frame_ptr frame_info_fn,
++ png_progressive_frame_ptr frame_end_fn));
++#endif /* PROGRESSIVE_READ */
++#endif /* READ_APNG */
++
++#ifdef PNG_WRITE_APNG_SUPPORTED
++PNG_EXPORT(263, void, png_write_frame_head, (png_structp png_ptr,
++ png_infop info_ptr, png_bytepp row_pointers,
++ png_uint_32 width, png_uint_32 height,
++ png_uint_32 x_offset, png_uint_32 y_offset,
++ png_uint_16 delay_num, png_uint_16 delay_den, png_byte dispose_op,
++ png_byte blend_op));
++
++PNG_EXPORT(264, void, png_write_frame_tail, (png_structp png_ptr,
++ png_infop info_ptr));
++#endif /* WRITE_APNG */
++#endif /* APNG */
++
+ /* Maintainer: Put new public prototypes here ^, in libpng.3, in project
+ * defs, and in scripts/symbols.def.
+ */
+@@ -3245,7 +3343,11 @@
+ * one to use is one more than this.)
+ */
+ #ifdef PNG_EXPORT_LAST_ORDINAL
++#ifdef PNG_APNG_SUPPORTED
++ PNG_EXPORT_LAST_ORDINAL(265);
++#else
+ PNG_EXPORT_LAST_ORDINAL(245);
++#endif /* APNG */
+ #endif
+
+ #ifdef __cplusplus
+Index: pngpriv.h
+===================================================================
+--- pngpriv.h
++++ pngpriv.h
+@@ -537,6 +537,10 @@
+ #define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
+ /* 0x4000 (unused) */
+ #define PNG_IS_READ_STRUCT 0x8000 /* Else is a write struct */
++#ifdef PNG_APNG_SUPPORTED
++#define PNG_HAVE_acTL 0x10000
++#define PNG_HAVE_fcTL 0x20000
++#endif
+
+ /* Flags for the transformations the PNG library does on the image data */
+ #define PNG_BGR 0x0001
+@@ -754,6 +758,16 @@
+ #define png_tRNS PNG_U32(116, 82, 78, 83)
+ #define png_zTXt PNG_U32(122, 84, 88, 116)
+
++#ifdef PNG_APNG_SUPPORTED
++#define png_acTL PNG_U32( 97, 99, 84, 76)
++#define png_fcTL PNG_U32(102, 99, 84, 76)
++#define png_fdAT PNG_U32(102, 100, 65, 84)
++
++/* For png_struct.apng_flags: */
++#define PNG_FIRST_FRAME_HIDDEN 0x0001
++#define PNG_APNG_APP 0x0002
++#endif
++
+ /* The following will work on (signed char*) strings, whereas the get_uint_32
+ * macro will fail on top-bit-set values because of the sign extension.
+ */
+@@ -1441,6 +1455,49 @@
+
+ #endif /* PROGRESSIVE_READ */
+
++#ifdef PNG_APNG_SUPPORTED
++PNG_INTERNAL_FUNCTION(void,png_ensure_fcTL_is_valid,(png_structp png_ptr,
++ png_uint_32 width, png_uint_32 height,
++ png_uint_32 x_offset, png_uint_32 y_offset,
++ png_uint_16 delay_num, png_uint_16 delay_den,
++ png_byte dispose_op, png_byte blend_op),PNG_EMPTY);
++
++#ifdef PNG_READ_APNG_SUPPORTED
++PNG_INTERNAL_FUNCTION(void,png_handle_acTL,(png_structp png_ptr,
++ png_infop info_ptr, png_uint_32 length),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_handle_fcTL,(png_structp png_ptr,
++ png_infop info_ptr, png_uint_32 length),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_handle_fdAT,(png_structp png_ptr,
++ png_infop info_ptr, png_uint_32 length),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_have_info,(png_structp png_ptr,
++ png_infop info_ptr),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_ensure_sequence_number,(png_structp png_ptr,
++ png_uint_32 length),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_read_reset,(png_structp png_ptr),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_read_reinit,(png_structp png_ptr,
++ png_infop info_ptr),PNG_EMPTY);
++#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
++PNG_INTERNAL_FUNCTION(void,png_progressive_read_reset,(png_structp png_ptr),
++ PNG_EMPTY);
++#endif /* PROGRESSIVE_READ */
++#endif /* READ_APNG */
++
++#ifdef PNG_WRITE_APNG_SUPPORTED
++PNG_INTERNAL_FUNCTION(void,png_write_acTL,(png_structp png_ptr,
++ png_uint_32 num_frames, png_uint_32 num_plays),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_write_fcTL,(png_structp png_ptr,
++ png_uint_32 width, png_uint_32 height,
++ png_uint_32 x_offset, png_uint_32 y_offset,
++ png_uint_16 delay_num, png_uint_16 delay_den,
++ png_byte dispose_op, png_byte blend_op),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_write_fdAT,(png_structp png_ptr,
++ png_const_bytep data, png_size_t length),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_write_reset,(png_structp png_ptr),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_write_reinit,(png_structp png_ptr,
++ png_infop info_ptr, png_uint_32 width, png_uint_32 height),PNG_EMPTY);
++#endif /* WRITE_APNG */
++#endif /* APNG */
++
+ /* Added at libpng version 1.6.0 */
+ #ifdef PNG_GAMMA_SUPPORTED
+ PNG_INTERNAL_FUNCTION(void,png_colorspace_set_gamma,(png_const_structrp png_ptr,
+Index: pnginfo.h
+===================================================================
+--- pnginfo.h
++++ pnginfo.h
@@ -255,5 +255,18 @@
png_bytepp row_pointers; /* the image bits */
#endif
@@ -331,10 +594,113 @@ diff -Naru libpng-1.6.19.org/pnginfo.h libpng-1.6.19/pnginfo.h
+
};
#endif /* PNGINFO_H */
-diff -Naru libpng-1.6.19.org/pngpread.c libpng-1.6.19/pngpread.c
---- libpng-1.6.19.org/pngpread.c 2015-11-15 22:34:42.409615548 +0900
-+++ libpng-1.6.19/pngpread.c 2015-11-15 22:34:42.477617922 +0900
-@@ -194,6 +194,106 @@
+Index: pngstruct.h
+===================================================================
+--- pngstruct.h
++++ pngstruct.h
+@@ -403,6 +403,27 @@
+ png_byte filter_type;
+ #endif
+
++#ifdef PNG_APNG_SUPPORTED
++ png_uint_32 apng_flags;
++ png_uint_32 next_seq_num; /* next fcTL/fdAT chunk sequence number */
++ png_uint_32 first_frame_width;
++ png_uint_32 first_frame_height;
++
++#ifdef PNG_READ_APNG_SUPPORTED
++ png_uint_32 num_frames_read; /* incremented after all image data of */
++ /* a frame is read */
++#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
++ png_progressive_frame_ptr frame_info_fn; /* frame info read callback */
++ png_progressive_frame_ptr frame_end_fn; /* frame data read callback */
++#endif
++#endif
++
++#ifdef PNG_WRITE_APNG_SUPPORTED
++ png_uint_32 num_frames_to_write;
++ png_uint_32 num_frames_written;
++#endif
++#endif /* APNG */
++
+ /* New members added in libpng-1.2.0 */
+
+ /* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
+Index: pngwrite.c
+===================================================================
+--- pngwrite.c
++++ pngwrite.c
+@@ -128,6 +128,10 @@
+ * the application continues writing the PNG. So check the 'invalid'
+ * flag here too.
+ */
++#ifdef PNG_WRITE_APNG_SUPPORTED
++ if ((info_ptr->valid & PNG_INFO_acTL) != 0)
++ png_write_acTL(png_ptr, info_ptr->num_frames, info_ptr->num_plays);
++#endif
+ #ifdef PNG_GAMMA_SUPPORTED
+ # ifdef PNG_WRITE_gAMA_SUPPORTED
+ if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) == 0 &&
+@@ -360,6 +364,11 @@
+ if ((png_ptr->mode & PNG_HAVE_IDAT) == 0)
+ png_error(png_ptr, "No IDATs written into file");
+
++#ifdef PNG_WRITE_APNG_SUPPORTED
++ if (png_ptr->num_frames_written != png_ptr->num_frames_to_write)
++ png_error(png_ptr, "Not enough frames written");
++#endif
++
+ #ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ if (png_ptr->num_palette_max > png_ptr->num_palette)
+ png_benign_error(png_ptr, "Wrote palette index exceeding num_palette");
+@@ -2380,4 +2389,42 @@
+ }
+ #endif /* SIMPLIFIED_WRITE_STDIO */
+ #endif /* SIMPLIFIED_WRITE */
++
++#ifdef PNG_WRITE_APNG_SUPPORTED
++void PNGAPI
++png_write_frame_head(png_structp png_ptr, png_infop info_ptr,
++ png_bytepp row_pointers, png_uint_32 width, png_uint_32 height,
++ png_uint_32 x_offset, png_uint_32 y_offset,
++ png_uint_16 delay_num, png_uint_16 delay_den, png_byte dispose_op,
++ png_byte blend_op)
++{
++ png_debug(1, "in png_write_frame_head");
++
++ /* there is a chance this has been set after png_write_info was called,
++ * so it would be set but not written. is there a way to be sure? */
++ if ((info_ptr->valid & PNG_INFO_acTL) == 0)
++ png_error(png_ptr, "png_write_frame_head(): acTL not set");
++
++ png_write_reset(png_ptr);
++
++ png_write_reinit(png_ptr, info_ptr, width, height);
++
++ if ((png_ptr->apng_flags & PNG_FIRST_FRAME_HIDDEN) == 0 ||
++ png_ptr->num_frames_written != 0)
++ png_write_fcTL(png_ptr, width, height, x_offset, y_offset,
++ delay_num, delay_den, dispose_op, blend_op);
++
++ PNG_UNUSED(row_pointers)
++}
++
++void PNGAPI
++png_write_frame_tail(png_structp png_ptr, png_infop info_ptr)
++{
++ png_debug(1, "in png_write_frame_tail");
++
++ png_ptr->num_frames_written++;
++
++ PNG_UNUSED(info_ptr)
++}
++#endif /* WRITE_APNG */
+ #endif /* WRITE */
+Index: pngpread.c
+===================================================================
+--- pngpread.c
++++ pngpread.c
+@@ -194,6 +194,89 @@
chunk_name = png_ptr->chunk_name;
@@ -345,42 +711,29 @@ diff -Naru libpng-1.6.19.org/pngpread.c libpng-1.6.19/pngpread.c
+ if (chunk_name == png_IDAT)
+ {
+ /* Discard trailing IDATs for the first frame */
-+ if (png_ptr->mode & PNG_HAVE_fcTL || png_ptr->num_frames_read > 1)
++ if ((png_ptr->mode & PNG_HAVE_fcTL) != 0 ||
++ png_ptr->num_frames_read > 1)
+ png_error(png_ptr, "out of place IDAT");
+
-+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
-+ {
-+ png_push_save_buffer(png_ptr);
-+ return;
-+ }
-+
++ PNG_PUSH_SAVE_BUFFER_IF_FULL
++ png_crc_finish(png_ptr, png_ptr->push_length);
+ png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
-+ return;
+ }
++
+ else if (chunk_name == png_fdAT)
+ {
-+ if (png_ptr->buffer_size < 4)
-+ {
-+ png_push_save_buffer(png_ptr);
-+ return;
-+ }
-+
++ PNG_PUSH_SAVE_BUFFER_IF_LT(4)
+ png_ensure_sequence_number(png_ptr, 4);
+
-+ if (!(png_ptr->mode & PNG_HAVE_fcTL))
++ if ((png_ptr->mode & PNG_HAVE_fcTL) == 0)
+ {
+ /* Discard trailing fdATs for frames other than the first */
+ if (png_ptr->num_frames_read < 2)
+ png_error(png_ptr, "out of place fdAT");
+
-+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
-+ {
-+ png_push_save_buffer(png_ptr);
-+ return;
-+ }
-+
++ PNG_PUSH_SAVE_BUFFER_IF_FULL
++ png_crc_finish(png_ptr, png_ptr->push_length);
+ png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
-+ return;
+ }
+
+ else
@@ -389,25 +742,18 @@ diff -Naru libpng-1.6.19.org/pngpread.c libpng-1.6.19/pngpread.c
+ png_ptr->idat_size = png_ptr->push_length - 4;
+ png_ptr->mode |= PNG_HAVE_IDAT;
+ png_ptr->process_mode = PNG_READ_IDAT_MODE;
-+
-+ return;
+ }
+ }
+
+ else if (chunk_name == png_fcTL)
+ {
-+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
-+ {
-+ png_push_save_buffer(png_ptr);
-+ return;
-+ }
-+
++ PNG_PUSH_SAVE_BUFFER_IF_FULL
+ png_read_reset(png_ptr);
+ png_ptr->mode &= ~PNG_HAVE_fcTL;
+
+ png_handle_fcTL(png_ptr, info_ptr, png_ptr->push_length);
+
-+ if (!(png_ptr->mode & PNG_HAVE_fcTL))
++ if ((png_ptr->mode & PNG_HAVE_fcTL) == 0)
+ png_error(png_ptr, "missing required fcTL chunk");
+
+ png_read_reinit(png_ptr, info_ptr);
@@ -417,31 +763,34 @@ diff -Naru libpng-1.6.19.org/pngpread.c libpng-1.6.19/pngpread.c
+ (*(png_ptr->frame_info_fn))(png_ptr, png_ptr->num_frames_read);
+
+ png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
++ }
+
-+ return;
++ else if (chunk_name == png_IEND)
++ {
++ PNG_PUSH_SAVE_BUFFER_IF_FULL
++ png_warning(png_ptr, "Number of actual frames fewer than expected");
++ png_crc_finish(png_ptr, png_ptr->push_length);
++ png_ptr->process_mode = PNG_READ_DONE_MODE;
++ png_push_have_end(png_ptr, info_ptr);
+ }
+
+ else
+ {
-+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
-+ {
-+ png_push_save_buffer(png_ptr);
-+ return;
-+ }
++ PNG_PUSH_SAVE_BUFFER_IF_FULL
+ png_warning(png_ptr, "Skipped (ignored) a chunk "
+ "between APNG chunks");
++ png_crc_finish(png_ptr, png_ptr->push_length);
+ png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
-+ return;
+ }
+
+ return;
+ }
-+#endif /* PNG_READ_APNG_SUPPORTED */
++#endif /* READ_APNG */
+
if (chunk_name == png_IDAT)
{
if ((png_ptr->mode & PNG_AFTER_IDAT) != 0)
-@@ -258,6 +358,9 @@
+@@ -258,6 +341,9 @@
else if (chunk_name == png_IDAT)
{
@@ -451,38 +800,28 @@ diff -Naru libpng-1.6.19.org/pngpread.c libpng-1.6.19/pngpread.c
png_ptr->idat_size = png_ptr->push_length;
png_ptr->process_mode = PNG_READ_IDAT_MODE;
png_push_have_info(png_ptr, info_ptr);
-@@ -403,6 +506,30 @@
- png_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length);
+@@ -404,6 +490,20 @@
}
#endif
+
+#ifdef PNG_READ_APNG_SUPPORTED
+ else if (chunk_name == png_acTL)
+ {
-+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
-+ {
-+ png_push_save_buffer(png_ptr);
-+ return;
-+ }
-+
++ PNG_PUSH_SAVE_BUFFER_IF_FULL
+ png_handle_acTL(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+ else if (chunk_name == png_fcTL)
+ {
-+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
-+ {
-+ png_push_save_buffer(png_ptr);
-+ return;
-+ }
-+
++ PNG_PUSH_SAVE_BUFFER_IF_FULL
+ png_handle_fcTL(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
-+#endif /* PNG_READ_APNG_SUPPORTED */
-
++#endif /* READ_APNG */
else
{
-@@ -533,7 +660,11 @@
+ PNG_PUSH_SAVE_BUFFER_IF_FULL
+@@ -533,7 +633,11 @@
png_byte chunk_tag[4];
/* TODO: this code can be commoned up with the same code in push_read */
@@ -494,14 +833,14 @@ diff -Naru libpng-1.6.19.org/pngpread.c libpng-1.6.19/pngpread.c
png_push_fill_buffer(png_ptr, chunk_length, 4);
png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length);
png_reset_crc(png_ptr);
-@@ -541,17 +672,64 @@
+@@ -541,17 +645,60 @@
png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag);
png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
+#ifdef PNG_READ_APNG_SUPPORTED
+ if (png_ptr->chunk_name != png_fdAT && png_ptr->num_frames_read > 0)
+ {
-+ if (png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED)
++ if ((png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED) != 0)
+ {
+ png_ptr->process_mode = PNG_READ_CHUNK_MODE;
+ if (png_ptr->frame_end_fn != NULL)
@@ -513,11 +852,7 @@ diff -Naru libpng-1.6.19.org/pngpread.c libpng-1.6.19/pngpread.c
+ {
+ if (png_ptr->chunk_name == png_IEND)
+ png_error(png_ptr, "Not enough image data");
-+ if (png_ptr->push_length + 4 > png_ptr->buffer_size)
-+ {
-+ png_push_save_buffer(png_ptr);
-+ return;
-+ }
++ PNG_PUSH_SAVE_BUFFER_IF_FULL
+ png_warning(png_ptr, "Skipping (ignoring) a chunk between "
+ "APNG chunks");
+ png_crc_finish(png_ptr, png_ptr->push_length);
@@ -559,23 +894,24 @@ diff -Naru libpng-1.6.19.org/pngpread.c libpng-1.6.19/pngpread.c
}
if (png_ptr->idat_size != 0 && png_ptr->save_buffer_size != 0)
-@@ -625,6 +803,15 @@
+@@ -625,6 +772,16 @@
if (!(buffer_length > 0) || buffer == NULL)
png_error(png_ptr, "No IDAT data (internal error)");
+#ifdef PNG_READ_APNG_SUPPORTED
+ /* If the app is not APNG-aware, decode only the first frame */
-+ if (!(png_ptr->apng_flags & PNG_APNG_APP) && png_ptr->num_frames_read > 0)
++ if ((png_ptr->apng_flags & PNG_APNG_APP) == 0 &&
++ png_ptr->num_frames_read > 0)
+ {
-+ png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
-+ return;
++ png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
++ return;
+ }
+#endif
+
/* This routine must process all the data it has been given
* before returning, calling the row callback as required to
* handle the uncompressed results.
-@@ -1074,6 +1261,18 @@
+@@ -1074,6 +1231,18 @@
png_set_read_fn(png_ptr, progressive_ptr, png_push_fill_buffer);
}
@@ -594,193 +930,174 @@ diff -Naru libpng-1.6.19.org/pngpread.c libpng-1.6.19/pngpread.c
png_voidp PNGAPI
png_get_progressive_ptr(png_const_structrp png_ptr)
{
-diff -Naru libpng-1.6.19.org/pngpriv.h libpng-1.6.19/pngpriv.h
---- libpng-1.6.19.org/pngpriv.h 2015-11-15 22:34:42.409615548 +0900
-+++ libpng-1.6.19/pngpriv.h 2015-11-15 22:34:42.477617922 +0900
-@@ -537,6 +537,10 @@
- #define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
- /* 0x4000 (unused) */
- #define PNG_IS_READ_STRUCT 0x8000 /* Else is a write struct */
+Index: pngset.c
+===================================================================
+--- pngset.c
++++ pngset.c
+@@ -241,6 +241,11 @@
+ info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth);
+
+ info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
++
+#ifdef PNG_APNG_SUPPORTED
-+#define PNG_HAVE_acTL 0x10000
-+#define PNG_HAVE_fcTL 0x20000
++ /* for non-animated png. this may be overwritten from an acTL chunk later */
++ info_ptr->num_frames = 1;
+#endif
+ }
- /* Flags for the transformations the PNG library does on the image data */
- #define PNG_BGR 0x0001
-@@ -754,6 +758,16 @@
- #define png_tRNS PNG_U32(116, 82, 78, 83)
- #define png_zTXt PNG_U32(122, 84, 88, 116)
+ #ifdef PNG_oFFs_SUPPORTED
+@@ -1094,6 +1099,146 @@
+ }
+ #endif /* sPLT */
+#ifdef PNG_APNG_SUPPORTED
-+#define png_acTL PNG_U32( 97, 99, 84, 76)
-+#define png_fcTL PNG_U32(102, 99, 84, 76)
-+#define png_fdAT PNG_U32(102, 100, 65, 84)
++png_uint_32 PNGAPI
++png_set_acTL(png_structp png_ptr, png_infop info_ptr,
++ png_uint_32 num_frames, png_uint_32 num_plays)
++{
++ png_debug1(1, "in %s storage function", "acTL");
+
-+/* For png_struct.apng_flags: */
-+#define PNG_FIRST_FRAME_HIDDEN 0x0001
-+#define PNG_APNG_APP 0x0002
-+#endif
++ if (png_ptr == NULL || info_ptr == NULL)
++ {
++ png_warning(png_ptr,
++ "Call to png_set_acTL() with NULL png_ptr "
++ "or info_ptr ignored");
++ return (0);
++ }
++ if (num_frames == 0)
++ {
++ png_warning(png_ptr,
++ "Ignoring attempt to set acTL with num_frames zero");
++ return (0);
++ }
++ if (num_frames > PNG_UINT_31_MAX)
++ {
++ png_warning(png_ptr,
++ "Ignoring attempt to set acTL with num_frames > 2^31-1");
++ return (0);
++ }
++ if (num_plays > PNG_UINT_31_MAX)
++ {
++ png_warning(png_ptr,
++ "Ignoring attempt to set acTL with num_plays > 2^31-1");
++ return (0);
++ }
+
- /* The following will work on (signed char*) strings, whereas the get_uint_32
- * macro will fail on top-bit-set values because of the sign extension.
- */
-@@ -1453,6 +1467,47 @@
- */
- #endif
-
-+#ifdef PNG_APNG_SUPPORTED
-+PNG_INTERNAL_FUNCTION(void,png_ensure_fcTL_is_valid,(png_structp png_ptr,
-+ png_uint_32 width, png_uint_32 height,
-+ png_uint_32 x_offset, png_uint_32 y_offset,
-+ png_uint_16 delay_num, png_uint_16 delay_den,
-+ png_byte dispose_op, png_byte blend_op), PNG_EMPTY);
++ info_ptr->num_frames = num_frames;
++ info_ptr->num_plays = num_plays;
+
-+#ifdef PNG_READ_APNG_SUPPORTED
-+PNG_INTERNAL_FUNCTION(void,png_handle_acTL,(png_structp png_ptr, png_infop info_ptr,
-+ png_uint_32 length),PNG_EMPTY);
-+PNG_INTERNAL_FUNCTION(void,png_handle_fcTL,(png_structp png_ptr, png_infop info_ptr,
-+ png_uint_32 length),PNG_EMPTY);
-+PNG_INTERNAL_FUNCTION(void,png_handle_fdAT,(png_structp png_ptr, png_infop info_ptr,
-+ png_uint_32 length),PNG_EMPTY);
-+PNG_INTERNAL_FUNCTION(void,png_have_info,(png_structp png_ptr, png_infop info_ptr),PNG_EMPTY);
-+PNG_INTERNAL_FUNCTION(void,png_ensure_sequence_number,(png_structp png_ptr,
-+ png_uint_32 length),PNG_EMPTY);
-+PNG_INTERNAL_FUNCTION(void,png_read_reset,(png_structp png_ptr),PNG_EMPTY);
-+PNG_INTERNAL_FUNCTION(void,png_read_reinit,(png_structp png_ptr,
-+ png_infop info_ptr),PNG_EMPTY);
-+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-+PNG_INTERNAL_FUNCTION(void,png_progressive_read_reset,(png_structp png_ptr),PNG_EMPTY);
-+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-+#endif /* PNG_READ_APNG_SUPPORTED */
++ info_ptr->valid |= PNG_INFO_acTL;
+
-+#ifdef PNG_WRITE_APNG_SUPPORTED
-+PNG_INTERNAL_FUNCTION(void,png_write_acTL,(png_structp png_ptr,
-+ png_uint_32 num_frames, png_uint_32 num_plays),PNG_EMPTY);
-+PNG_INTERNAL_FUNCTION(void,png_write_fcTL,(png_structp png_ptr,
-+ png_uint_32 width, png_uint_32 height,
-+ png_uint_32 x_offset, png_uint_32 y_offset,
-+ png_uint_16 delay_num, png_uint_16 delay_den,
-+ png_byte dispose_op, png_byte blend_op),PNG_EMPTY);
-+PNG_INTERNAL_FUNCTION(void,png_write_fdAT,(png_structp png_ptr,
-+ png_const_bytep data, png_size_t length),PNG_EMPTY);
-+PNG_INTERNAL_FUNCTION(void,png_write_reset,(png_structp png_ptr),PNG_EMPTY);
-+PNG_INTERNAL_FUNCTION(void,png_write_reinit,(png_structp png_ptr,
-+ png_infop info_ptr, png_uint_32 width, png_uint_32 height),PNG_EMPTY);
-+#endif /* PNG_WRITE_APNG_SUPPORTED */
-+#endif /* PNG_APNG_SUPPORTED */
-+
- /* Added at libpng version 1.4.0 */
- #ifdef PNG_COLORSPACE_SUPPORTED
- /* These internal functions are for maintaining the colorspace structure within
-diff -Naru libpng-1.6.19.org/pngread.c libpng-1.6.19/pngread.c
---- libpng-1.6.19.org/pngread.c 2015-11-15 22:34:42.410615583 +0900
-+++ libpng-1.6.19/pngread.c 2015-11-15 22:34:42.478617957 +0900
-@@ -158,6 +158,9 @@
-
- else if (chunk_name == png_IDAT)
- {
-+#ifdef PNG_READ_APNG_SUPPORTED
-+ png_have_info(png_ptr, info_ptr);
-+#endif
- png_ptr->idat_size = length;
- break;
- }
-@@ -247,6 +250,17 @@
- png_handle_iTXt(png_ptr, info_ptr, length);
- #endif
-
-+#ifdef PNG_READ_APNG_SUPPORTED
-+ else if (chunk_name == png_acTL)
-+ png_handle_acTL(png_ptr, info_ptr, length);
++ return (1);
++}
+
-+ else if (chunk_name == png_fcTL)
-+ png_handle_fcTL(png_ptr, info_ptr, length);
++/* delay_num and delay_den can hold any 16-bit values including zero */
++png_uint_32 PNGAPI
++png_set_next_frame_fcTL(png_structp png_ptr, png_infop info_ptr,
++ png_uint_32 width, png_uint_32 height,
++ png_uint_32 x_offset, png_uint_32 y_offset,
++ png_uint_16 delay_num, png_uint_16 delay_den,
++ png_byte dispose_op, png_byte blend_op)
++{
++ png_debug1(1, "in %s storage function", "fcTL");
+
-+ else if (chunk_name == png_fdAT)
-+ png_handle_fdAT(png_ptr, info_ptr, length);
-+#endif
++ if (png_ptr == NULL || info_ptr == NULL)
++ {
++ png_warning(png_ptr,
++ "Call to png_set_fcTL() with NULL png_ptr or info_ptr "
++ "ignored");
++ return (0);
++ }
+
- else
- png_handle_unknown(png_ptr, info_ptr, length,
- PNG_HANDLE_CHUNK_AS_DEFAULT);
-@@ -254,6 +268,72 @@
- }
- #endif /* SEQUENTIAL_READ */
-
-+#ifdef PNG_READ_APNG_SUPPORTED
-+void PNGAPI
-+png_read_frame_head(png_structp png_ptr, png_infop info_ptr)
-+{
-+ png_byte have_chunk_after_DAT; /* after IDAT or after fdAT */
++ png_ensure_fcTL_is_valid(png_ptr, width, height, x_offset, y_offset,
++ delay_num, delay_den, dispose_op, blend_op);
+
-+ png_debug(0, "Reading frame head");
++ if (blend_op == PNG_BLEND_OP_OVER)
++ {
++ if ((png_ptr->color_type & PNG_COLOR_MASK_ALPHA) == 0 &&
++ png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS) == 0)
++ {
++ png_warning(png_ptr, "PNG_BLEND_OP_OVER is meaningless "
++ "and wasteful for opaque images, ignored");
++ blend_op = PNG_BLEND_OP_SOURCE;
++ }
++ }
+
-+ if (!(png_ptr->mode & PNG_HAVE_acTL))
-+ png_error(png_ptr, "attempt to png_read_frame_head() but "
-+ "no acTL present");
++ info_ptr->next_frame_width = width;
++ info_ptr->next_frame_height = height;
++ info_ptr->next_frame_x_offset = x_offset;
++ info_ptr->next_frame_y_offset = y_offset;
++ info_ptr->next_frame_delay_num = delay_num;
++ info_ptr->next_frame_delay_den = delay_den;
++ info_ptr->next_frame_dispose_op = dispose_op;
++ info_ptr->next_frame_blend_op = blend_op;
+
-+ /* do nothing for the main IDAT */
-+ if (png_ptr->num_frames_read == 0)
-+ return;
++ info_ptr->valid |= PNG_INFO_fcTL;
+
-+ png_read_reset(png_ptr);
-+ png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
-+ png_ptr->mode &= ~PNG_HAVE_fcTL;
++ return (1);
++}
+
-+ have_chunk_after_DAT = 0;
-+ for (;;)
-+ {
-+ png_uint_32 length = png_read_chunk_header(png_ptr);
++void /* PRIVATE */
++png_ensure_fcTL_is_valid(png_structp png_ptr,
++ png_uint_32 width, png_uint_32 height,
++ png_uint_32 x_offset, png_uint_32 y_offset,
++ png_uint_16 delay_num, png_uint_16 delay_den,
++ png_byte dispose_op, png_byte blend_op)
++{
++ if (width > PNG_UINT_31_MAX)
++ png_error(png_ptr, "invalid width in fcTL (> 2^31-1)");
++ if (height > PNG_UINT_31_MAX)
++ png_error(png_ptr, "invalid height in fcTL (> 2^31-1)");
++ if (x_offset > PNG_UINT_31_MAX)
++ png_error(png_ptr, "invalid x_offset in fcTL (> 2^31-1)");
++ if (y_offset > PNG_UINT_31_MAX)
++ png_error(png_ptr, "invalid y_offset in fcTL (> 2^31-1)");
++ if (width + x_offset > png_ptr->first_frame_width ||
++ height + y_offset > png_ptr->first_frame_height)
++ png_error(png_ptr, "dimensions of a frame are greater than "
++ "the ones in IHDR");
+
-+ if (png_ptr->chunk_name == png_IDAT)
-+ {
-+ /* discard trailing IDATs for the first frame */
-+ if (have_chunk_after_DAT || png_ptr->num_frames_read > 1)
-+ png_error(png_ptr, "png_read_frame_head(): out of place IDAT");
-+ png_crc_finish(png_ptr, length);
-+ }
++ if (dispose_op != PNG_DISPOSE_OP_NONE &&
++ dispose_op != PNG_DISPOSE_OP_BACKGROUND &&
++ dispose_op != PNG_DISPOSE_OP_PREVIOUS)
++ png_error(png_ptr, "invalid dispose_op in fcTL");
+
-+ else if (png_ptr->chunk_name == png_fcTL)
-+ {
-+ png_handle_fcTL(png_ptr, info_ptr, length);
-+ have_chunk_after_DAT = 1;
-+ }
++ if (blend_op != PNG_BLEND_OP_SOURCE &&
++ blend_op != PNG_BLEND_OP_OVER)
++ png_error(png_ptr, "invalid blend_op in fcTL");
+
-+ else if (png_ptr->chunk_name == png_fdAT)
-+ {
-+ png_ensure_sequence_number(png_ptr, length);
++ PNG_UNUSED(delay_num)
++ PNG_UNUSED(delay_den)
++}
+
-+ /* discard trailing fdATs for frames other than the first */
-+ if (!have_chunk_after_DAT && png_ptr->num_frames_read > 1)
-+ png_crc_finish(png_ptr, length - 4);
-+ else if(png_ptr->mode & PNG_HAVE_fcTL)
-+ {
-+ png_ptr->idat_size = length - 4;
-+ png_ptr->mode |= PNG_HAVE_IDAT;
++png_uint_32 PNGAPI
++png_set_first_frame_is_hidden(png_structp png_ptr, png_infop info_ptr,
++ png_byte is_hidden)
++{
++ png_debug(1, "in png_first_frame_is_hidden()");
+
-+ break;
-+ }
-+ else
-+ png_error(png_ptr, "png_read_frame_head(): out of place fdAT");
-+ }
-+ else
-+ {
-+ png_warning(png_ptr, "Skipped (ignored) a chunk "
-+ "between APNG chunks");
-+ png_crc_finish(png_ptr, length);
-+ }
-+ }
++ if (png_ptr == NULL)
++ return 0;
++
++ if (is_hidden != 0)
++ png_ptr->apng_flags |= PNG_FIRST_FRAME_HIDDEN;
++ else
++ png_ptr->apng_flags &= ~PNG_FIRST_FRAME_HIDDEN;
++
++ PNG_UNUSED(info_ptr)
++
++ return 1;
+}
-+#endif /* PNG_READ_APNG_SUPPORTED */
++#endif /* APNG */
+
- /* Optional call to update the users info_ptr structure */
- void PNGAPI
- png_read_update_info(png_structrp png_ptr, png_inforp info_ptr)
-diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
---- libpng-1.6.19.org/pngrutil.c 2015-11-15 22:34:42.412615653 +0900
-+++ libpng-1.6.19/pngrutil.c 2015-11-15 22:34:42.480618027 +0900
-@@ -824,6 +824,11 @@
+ #ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
+ static png_byte
+ check_location(png_const_structrp png_ptr, int location)
+Index: pngrutil.c
+===================================================================
+--- pngrutil.c
++++ pngrutil.c
+@@ -855,6 +855,11 @@
filter_type = buf[11];
interlace_type = buf[12];
@@ -792,7 +1109,7 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
/* Set internal variables */
png_ptr->width = width;
png_ptr->height = height;
-@@ -2724,6 +2729,179 @@
+@@ -2755,6 +2760,180 @@
}
#endif
@@ -807,17 +1124,17 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
+
+ png_debug(1, "in png_handle_acTL");
+
-+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
++ if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
+ {
+ png_error(png_ptr, "Missing IHDR before acTL");
+ }
-+ else if (png_ptr->mode & PNG_HAVE_IDAT)
++ else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
+ {
+ png_warning(png_ptr, "Invalid acTL after IDAT skipped");
+ png_crc_finish(png_ptr, length);
+ return;
+ }
-+ else if (png_ptr->mode & PNG_HAVE_acTL)
++ else if ((png_ptr->mode & PNG_HAVE_acTL) != 0)
+ {
+ png_warning(png_ptr, "Duplicate acTL skipped");
+ png_crc_finish(png_ptr, length);
@@ -838,7 +1155,7 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
+
+ /* the set function will do error checking on num_frames */
+ didSet = png_set_acTL(png_ptr, info_ptr, num_frames, num_plays);
-+ if(didSet)
++ if (didSet != 0)
+ png_ptr->mode |= PNG_HAVE_acTL;
+}
+
@@ -859,11 +1176,11 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
+
+ png_ensure_sequence_number(png_ptr, length);
+
-+ if (!(png_ptr->mode & PNG_HAVE_IHDR))
++ if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
+ {
+ png_error(png_ptr, "Missing IHDR before fcTL");
+ }
-+ else if (png_ptr->mode & PNG_HAVE_IDAT)
++ else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
+ {
+ /* for any frames other then the first this message may be misleading,
+ * but correct. PNG_HAVE_IDAT is unset before the frame head is read
@@ -872,7 +1189,7 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
+ png_crc_finish(png_ptr, length-4);
+ return;
+ }
-+ else if (png_ptr->mode & PNG_HAVE_fcTL)
++ else if ((png_ptr->mode & PNG_HAVE_fcTL) != 0)
+ {
+ png_warning(png_ptr, "Duplicate fcTL within one frame skipped");
+ png_crc_finish(png_ptr, length-4);
@@ -927,7 +1244,8 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
+void /* PRIVATE */
+png_have_info(png_structp png_ptr, png_infop info_ptr)
+{
-+ if((info_ptr->valid & PNG_INFO_acTL) && !(info_ptr->valid & PNG_INFO_fcTL))
++ if ((info_ptr->valid & PNG_INFO_acTL) != 0 &&
++ (info_ptr->valid & PNG_INFO_fcTL) == 0)
+ {
+ png_ptr->apng_flags |= PNG_FIRST_FRAME_HIDDEN;
+ info_ptr->num_frames++;
@@ -967,15 +1285,15 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
+
+ png_ptr->next_seq_num++;
+}
-+#endif /* PNG_READ_APNG_SUPPORTED */
++#endif /* READ_APNG */
+
#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
/* Utility function for png_handle_unknown; set up png_ptr::unknown_chunk */
static int
-@@ -3982,7 +4160,38 @@
- {
+@@ -4014,6 +4193,38 @@
uInt avail_in;
png_bytep buffer;
+
+#ifdef PNG_READ_APNG_SUPPORTED
+ png_uint_32 bytes_to_skip = 0;
+
@@ -1001,7 +1319,7 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
+ bytes_to_skip = png_ptr->idat_size;
+ continue;
+ }
-
++
+ png_ensure_sequence_number(png_ptr, png_ptr->idat_size);
+
+ png_ptr->idat_size -= 4;
@@ -1011,16 +1329,15 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
while (png_ptr->idat_size == 0)
{
png_crc_finish(png_ptr, 0);
-@@ -3994,7 +4203,7 @@
+@@ -4025,6 +4236,7 @@
if (png_ptr->chunk_name != png_IDAT)
png_error(png_ptr, "Not enough image data");
}
--
-+#endif /* PNG_READ_APNG_SUPPORTED */
++#endif /* READ_APNG */
+
avail_in = png_ptr->IDAT_read_size;
- if (avail_in > png_ptr->idat_size)
-@@ -4057,6 +4266,9 @@
+@@ -4088,6 +4300,9 @@
png_ptr->mode |= PNG_AFTER_IDAT;
png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
@@ -1030,7 +1347,7 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
if (png_ptr->zstream.avail_in > 0 || png_ptr->idat_size > 0)
png_chunk_benign_error(png_ptr, "Extra compressed data");
-@@ -4495,4 +4707,80 @@
+@@ -4526,4 +4741,80 @@
png_ptr->flags |= PNG_FLAG_ROW_INIT;
}
@@ -1056,7 +1373,7 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
+ png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,png_ptr->width);
+ png_ptr->info_rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth,
+ png_ptr->width);
-+ if (png_ptr->prev_row)
++ if (png_ptr->prev_row != NULL)
+ memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
+}
+
@@ -1066,23 +1383,23 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
+png_progressive_read_reset(png_structp png_ptr)
+{
+#ifdef PNG_READ_INTERLACING_SUPPORTED
-+ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
++ /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+
-+ /* Start of interlace block */
-+ const int png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
++ /* Start of interlace block */
++ static PNG_CONST png_byte png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
+
+ /* Offset to next interlace block */
-+ const int png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
++ static PNG_CONST png_byte png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
+
+ /* Start of interlace block in the y direction */
-+ const int png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
++ static PNG_CONST png_byte png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
+
+ /* Offset to next interlace block in the y direction */
-+ const int png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
++ static PNG_CONST png_byte png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
+
-+ if (png_ptr->interlaced)
++ if (png_ptr->interlaced != 0)
+ {
-+ if (!(png_ptr->transformations & PNG_INTERLACE))
++ if ((png_ptr->transformations & PNG_INTERLACE) == 0)
+ png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 -
+ png_pass_ystart[0]) / png_pass_yinc[0];
+ else
@@ -1094,7 +1411,7 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
+ png_pass_inc[png_ptr->pass];
+ }
+ else
-+#endif /* PNG_READ_INTERLACING_SUPPORTED */
++#endif /* READ_INTERLACING */
+ {
+ png_ptr->num_rows = png_ptr->height;
+ png_ptr->iwidth = png_ptr->width;
@@ -1108,277 +1425,14 @@ diff -Naru libpng-1.6.19.org/pngrutil.c libpng-1.6.19/pngrutil.c
+ png_ptr->zstream.avail_out = (uInt)PNG_ROWBYTES(png_ptr->pixel_depth,
+ png_ptr->iwidth) + 1;
+}
-+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-+#endif /* PNG_READ_APNG_SUPPORTED */
++#endif /* PROGRESSIVE_READ */
++#endif /* READ_APNG */
#endif /* READ */
-diff -Naru libpng-1.6.19.org/pngset.c libpng-1.6.19/pngset.c
---- libpng-1.6.19.org/pngset.c 2015-11-15 22:34:42.412615653 +0900
-+++ libpng-1.6.19/pngset.c 2015-11-15 22:34:42.480618027 +0900
-@@ -241,6 +241,11 @@
- info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth);
-
- info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
-+
-+#ifdef PNG_APNG_SUPPORTED
-+ /* for non-animated png. this may be overwritten from an acTL chunk later */
-+ info_ptr->num_frames = 1;
-+#endif
- }
-
- #ifdef PNG_oFFs_SUPPORTED
-@@ -1094,6 +1099,147 @@
- }
- #endif /* sPLT */
-
-+#ifdef PNG_APNG_SUPPORTED
-+png_uint_32 PNGAPI
-+png_set_acTL(png_structp png_ptr, png_infop info_ptr,
-+ png_uint_32 num_frames, png_uint_32 num_plays)
-+{
-+ png_debug1(1, "in %s storage function", "acTL");
-+
-+ if (png_ptr == NULL || info_ptr == NULL)
-+ {
-+ png_warning(png_ptr,
-+ "Call to png_set_acTL() with NULL png_ptr "
-+ "or info_ptr ignored");
-+ return (0);
-+ }
-+ if (num_frames == 0)
-+ {
-+ png_warning(png_ptr,
-+ "Ignoring attempt to set acTL with num_frames zero");
-+ return (0);
-+ }
-+ if (num_frames > PNG_UINT_31_MAX)
-+ {
-+ png_warning(png_ptr,
-+ "Ignoring attempt to set acTL with num_frames > 2^31-1");
-+ return (0);
-+ }
-+ if (num_plays > PNG_UINT_31_MAX)
-+ {
-+ png_warning(png_ptr,
-+ "Ignoring attempt to set acTL with num_plays "
-+ "> 2^31-1");
-+ return (0);
-+ }
-+
-+ info_ptr->num_frames = num_frames;
-+ info_ptr->num_plays = num_plays;
-+
-+ info_ptr->valid |= PNG_INFO_acTL;
-+
-+ return (1);
-+}
-+
-+/* delay_num and delay_den can hold any 16-bit values including zero */
-+png_uint_32 PNGAPI
-+png_set_next_frame_fcTL(png_structp png_ptr, png_infop info_ptr,
-+ png_uint_32 width, png_uint_32 height,
-+ png_uint_32 x_offset, png_uint_32 y_offset,
-+ png_uint_16 delay_num, png_uint_16 delay_den,
-+ png_byte dispose_op, png_byte blend_op)
-+{
-+ png_debug1(1, "in %s storage function", "fcTL");
-+
-+ if (png_ptr == NULL || info_ptr == NULL)
-+ {
-+ png_warning(png_ptr,
-+ "Call to png_set_fcTL() with NULL png_ptr or info_ptr "
-+ "ignored");
-+ return (0);
-+ }
-+
-+ png_ensure_fcTL_is_valid(png_ptr, width, height, x_offset, y_offset,
-+ delay_num, delay_den, dispose_op, blend_op);
-+
-+ if (blend_op == PNG_BLEND_OP_OVER)
-+ {
-+ if (!(png_ptr->color_type & PNG_COLOR_MASK_ALPHA) &&
-+ !(png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)))
-+ {
-+ png_warning(png_ptr, "PNG_BLEND_OP_OVER is meaningless "
-+ "and wasteful for opaque images, ignored");
-+ blend_op = PNG_BLEND_OP_SOURCE;
-+ }
-+ }
-+
-+ info_ptr->next_frame_width = width;
-+ info_ptr->next_frame_height = height;
-+ info_ptr->next_frame_x_offset = x_offset;
-+ info_ptr->next_frame_y_offset = y_offset;
-+ info_ptr->next_frame_delay_num = delay_num;
-+ info_ptr->next_frame_delay_den = delay_den;
-+ info_ptr->next_frame_dispose_op = dispose_op;
-+ info_ptr->next_frame_blend_op = blend_op;
-+
-+ info_ptr->valid |= PNG_INFO_fcTL;
-+
-+ return (1);
-+}
-+
-+void /* PRIVATE */
-+png_ensure_fcTL_is_valid(png_structp png_ptr,
-+ png_uint_32 width, png_uint_32 height,
-+ png_uint_32 x_offset, png_uint_32 y_offset,
-+ png_uint_16 delay_num, png_uint_16 delay_den,
-+ png_byte dispose_op, png_byte blend_op)
-+{
-+ if (width > PNG_UINT_31_MAX)
-+ png_error(png_ptr, "invalid width in fcTL (> 2^31-1)");
-+ if (height > PNG_UINT_31_MAX)
-+ png_error(png_ptr, "invalid height in fcTL (> 2^31-1)");
-+ if (x_offset > PNG_UINT_31_MAX)
-+ png_error(png_ptr, "invalid x_offset in fcTL (> 2^31-1)");
-+ if (y_offset > PNG_UINT_31_MAX)
-+ png_error(png_ptr, "invalid y_offset in fcTL (> 2^31-1)");
-+ if (width + x_offset > png_ptr->first_frame_width ||
-+ height + y_offset > png_ptr->first_frame_height)
-+ png_error(png_ptr, "dimensions of a frame are greater than"
-+ "the ones in IHDR");
-+
-+ if (dispose_op != PNG_DISPOSE_OP_NONE &&
-+ dispose_op != PNG_DISPOSE_OP_BACKGROUND &&
-+ dispose_op != PNG_DISPOSE_OP_PREVIOUS)
-+ png_error(png_ptr, "invalid dispose_op in fcTL");
-+
-+ if (blend_op != PNG_BLEND_OP_SOURCE &&
-+ blend_op != PNG_BLEND_OP_OVER)
-+ png_error(png_ptr, "invalid blend_op in fcTL");
-+
-+ PNG_UNUSED(delay_num)
-+ PNG_UNUSED(delay_den)
-+}
-+
-+png_uint_32 PNGAPI
-+png_set_first_frame_is_hidden(png_structp png_ptr, png_infop info_ptr,
-+ png_byte is_hidden)
-+{
-+ png_debug(1, "in png_first_frame_is_hidden()");
-+
-+ if (png_ptr == NULL)
-+ return 0;
-+
-+ if (is_hidden)
-+ png_ptr->apng_flags |= PNG_FIRST_FRAME_HIDDEN;
-+ else
-+ png_ptr->apng_flags &= ~PNG_FIRST_FRAME_HIDDEN;
-+
-+ PNG_UNUSED(info_ptr)
-+
-+ return 1;
-+}
-+#endif /* PNG_APNG_SUPPORTED */
-+
- #ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
- static png_byte
- check_location(png_const_structrp png_ptr, int location)
-diff -Naru libpng-1.6.19.org/pngstruct.h libpng-1.6.19/pngstruct.h
---- libpng-1.6.19.org/pngstruct.h 2015-11-15 22:34:42.412615653 +0900
-+++ libpng-1.6.19/pngstruct.h 2015-11-15 22:34:42.480618027 +0900
-@@ -400,6 +400,27 @@
- png_byte filter_type;
- #endif
-
-+#ifdef PNG_APNG_SUPPORTED
-+ png_uint_32 apng_flags;
-+ png_uint_32 next_seq_num; /* next fcTL/fdAT chunk sequence number */
-+ png_uint_32 first_frame_width;
-+ png_uint_32 first_frame_height;
-+
-+#ifdef PNG_READ_APNG_SUPPORTED
-+ png_uint_32 num_frames_read; /* incremented after all image data of */
-+ /* a frame is read */
-+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-+ png_progressive_frame_ptr frame_info_fn; /* frame info read callback */
-+ png_progressive_frame_ptr frame_end_fn; /* frame data read callback */
-+#endif
-+#endif
-+
-+#ifdef PNG_WRITE_APNG_SUPPORTED
-+ png_uint_32 num_frames_to_write;
-+ png_uint_32 num_frames_written;
-+#endif
-+#endif /* PNG_APNG_SUPPORTED */
-+
- /* New members added in libpng-1.2.0 */
-
- /* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
-diff -Naru libpng-1.6.19.org/pngwrite.c libpng-1.6.19/pngwrite.c
---- libpng-1.6.19.org/pngwrite.c 2015-11-15 22:34:42.413615688 +0900
-+++ libpng-1.6.19/pngwrite.c 2015-11-15 22:34:42.481618062 +0900
-@@ -128,6 +128,10 @@
- * the application continues writing the PNG. So check the 'invalid'
- * flag here too.
- */
-+#ifdef PNG_WRITE_APNG_SUPPORTED
-+ if (info_ptr->valid & PNG_INFO_acTL)
-+ png_write_acTL(png_ptr, info_ptr->num_frames, info_ptr->num_plays);
-+#endif
- #ifdef PNG_GAMMA_SUPPORTED
- # ifdef PNG_WRITE_gAMA_SUPPORTED
- if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) == 0 &&
-@@ -365,6 +369,11 @@
- png_benign_error(png_ptr, "Wrote palette index exceeding num_palette");
- #endif
-
-+#ifdef PNG_WRITE_APNG_SUPPORTED
-+ if (png_ptr->num_frames_written != png_ptr->num_frames_to_write)
-+ png_error(png_ptr, "Not enough frames written");
-+#endif
-+
- /* See if user wants us to write information chunks */
- if (info_ptr != NULL)
- {
-@@ -1450,6 +1459,43 @@
- }
- #endif
-
-+#ifdef PNG_WRITE_APNG_SUPPORTED
-+void PNGAPI
-+png_write_frame_head(png_structp png_ptr, png_infop info_ptr,
-+ png_bytepp row_pointers, png_uint_32 width, png_uint_32 height,
-+ png_uint_32 x_offset, png_uint_32 y_offset,
-+ png_uint_16 delay_num, png_uint_16 delay_den, png_byte dispose_op,
-+ png_byte blend_op)
-+{
-+ png_debug(1, "in png_write_frame_head");
-+
-+ /* there is a chance this has been set after png_write_info was called,
-+ * so it would be set but not written. is there a way to be sure? */
-+ if (!(info_ptr->valid & PNG_INFO_acTL))
-+ png_error(png_ptr, "png_write_frame_head(): acTL not set");
-+
-+ png_write_reset(png_ptr);
-+
-+ png_write_reinit(png_ptr, info_ptr, width, height);
-+
-+ if ( !(png_ptr->num_frames_written == 0 &&
-+ (png_ptr->apng_flags & PNG_FIRST_FRAME_HIDDEN) ) )
-+ png_write_fcTL(png_ptr, width, height, x_offset, y_offset,
-+ delay_num, delay_den, dispose_op, blend_op);
-+
-+ PNG_UNUSED(row_pointers)
-+}
-+
-+void PNGAPI
-+png_write_frame_tail(png_structp png_ptr, png_infop info_ptr)
-+{
-+ png_debug(1, "in png_write_frame_tail");
-+
-+ png_ptr->num_frames_written++;
-+
-+ PNG_UNUSED(info_ptr)
-+}
-+#endif /* PNG_WRITE_APNG_SUPPORTED */
-
- #ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED
- # ifdef PNG_STDIO_SUPPORTED /* currently required for png_image_write_* */
-diff -Naru libpng-1.6.19.org/pngwutil.c libpng-1.6.19/pngwutil.c
---- libpng-1.6.19.org/pngwutil.c 2015-11-15 22:34:42.414615723 +0900
-+++ libpng-1.6.19/pngwutil.c 2015-11-15 22:34:42.482618096 +0900
-@@ -901,6 +901,11 @@
+Index: pngwutil.c
+===================================================================
+--- pngwutil.c
++++ pngwutil.c
+@@ -817,6 +817,11 @@
/* Write the chunk */
png_write_complete_chunk(png_ptr, png_IHDR, buf, (png_size_t)13);
@@ -1390,38 +1444,39 @@ diff -Naru libpng-1.6.19.org/pngwutil.c libpng-1.6.19/pngwutil.c
if ((png_ptr->do_filter) == PNG_NO_FILTERS)
{
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE ||
-@@ -1082,7 +1087,14 @@
+@@ -998,7 +1003,15 @@
optimize_cmf(data, png_image_size(png_ptr));
#endif
-+# ifdef PNG_WRITE_APNG_SUPPORTED
-+ if (png_ptr->num_frames_written == 0)
-+# endif
++#ifdef PNG_WRITE_APNG_SUPPORTED
++ if (png_ptr->num_frames_written == 0)
++#endif
png_write_complete_chunk(png_ptr, png_IDAT, data, size);
-+# ifdef PNG_WRITE_APNG_SUPPORTED
-+ else
-+ png_write_fdAT(png_ptr, data, size);
-+# endif /* PNG_WRITE_APNG_SUPPORTED */
++#ifdef PNG_WRITE_APNG_SUPPORTED
++ else
++ png_write_fdAT(png_ptr, data, size);
++#endif /* WRITE_APNG */
++
png_ptr->mode |= PNG_HAVE_IDAT;
png_ptr->zstream.next_out = data;
-@@ -1128,7 +1140,15 @@
+@@ -1044,7 +1057,15 @@
optimize_cmf(data, png_image_size(png_ptr));
#endif
-+# ifdef PNG_WRITE_APNG_SUPPORTED
-+ if (png_ptr->num_frames_written == 0)
-+# endif
++#ifdef PNG_WRITE_APNG_SUPPORTED
++ if (png_ptr->num_frames_written == 0)
++#endif
png_write_complete_chunk(png_ptr, png_IDAT, data, size);
-+# ifdef PNG_WRITE_APNG_SUPPORTED
-+ else
-+ png_write_fdAT(png_ptr, data, size);
-+# endif /* PNG_WRITE_APNG_SUPPORTED */
++#ifdef PNG_WRITE_APNG_SUPPORTED
++ else
++ png_write_fdAT(png_ptr, data, size);
++#endif /* WRITE_APNG */
+
png_ptr->zstream.avail_out = 0;
png_ptr->zstream.next_out = NULL;
png_ptr->mode |= PNG_HAVE_IDAT | PNG_AFTER_IDAT;
-@@ -1941,6 +1961,82 @@
+@@ -1857,6 +1878,82 @@
}
#endif
@@ -1436,7 +1491,7 @@ diff -Naru libpng-1.6.19.org/pngwutil.c libpng-1.6.19/pngwutil.c
+
+ png_ptr->num_frames_to_write = num_frames;
+
-+ if (png_ptr->apng_flags & PNG_FIRST_FRAME_HIDDEN)
++ if ((png_ptr->apng_flags & PNG_FIRST_FRAME_HIDDEN) != 0)
+ num_frames--;
+
+ png_save_uint_32(buf, num_frames);
@@ -1499,12 +1554,12 @@ diff -Naru libpng-1.6.19.org/pngwutil.c libpng-1.6.19/pngwutil.c
+
+ png_ptr->next_seq_num++;
+}
-+#endif /* PNG_WRITE_APNG_SUPPORTED */
++#endif /* WRITE_APNG */
+
/* Initializes the row writing capability of libpng */
void /* PRIVATE */
png_write_start_row(png_structrp png_ptr)
-@@ -2706,4 +2802,39 @@
+@@ -2622,4 +2719,39 @@
}
#endif /* WRITE_FLUSH */
}
@@ -1529,7 +1584,7 @@ diff -Naru libpng-1.6.19.org/pngwutil.c libpng-1.6.19/pngwutil.c
+ "don't match the ones in IHDR");
+ if (width > png_ptr->first_frame_width ||
+ height > png_ptr->first_frame_height)
-+ png_error(png_ptr, "width and/or height for a frame greater than"
++ png_error(png_ptr, "width and/or height for a frame greater than "
+ "the ones in IHDR");
+
+ png_set_IHDR(png_ptr, info_ptr, width, height,
@@ -1542,32 +1597,33 @@ diff -Naru libpng-1.6.19.org/pngwutil.c libpng-1.6.19/pngwutil.c
+ png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, width);
+ png_ptr->usr_width = png_ptr->width;
+}
-+#endif /* PNG_WRITE_APNG_SUPPORTED */
++#endif /* WRITE_APNG */
#endif /* WRITE */
-diff -Naru libpng-1.6.19.org/scripts/symbols.def libpng-1.6.19/scripts/symbols.def
---- libpng-1.6.19.org/scripts/symbols.def 2015-11-15 22:34:42.419615897 +0900
-+++ libpng-1.6.19/scripts/symbols.def 2015-11-15 22:34:42.486618236 +0900
-@@ -249,3 +249,23 @@
- png_set_check_for_invalid_index @242
+Index: scripts/symbols.def
+===================================================================
+--- scripts/symbols.def
++++ scripts/symbols.def
+@@ -250,3 +250,23 @@
png_get_palette_max @243
png_set_option @244
-+ png_get_acTL @245
-+ png_set_acTL @246
-+ png_get_num_frames @247
-+ png_get_num_plays @248
-+ png_get_next_frame_fcTL @249
-+ png_set_next_frame_fcTL @250
-+ png_get_next_frame_width @251
-+ png_get_next_frame_height @252
-+ png_get_next_frame_x_offset @253
-+ png_get_next_frame_y_offset @254
-+ png_get_next_frame_delay_num @255
-+ png_get_next_frame_delay_den @256
-+ png_get_next_frame_dispose_op @257
-+ png_get_next_frame_blend_op @258
-+ png_get_first_frame_is_hidden @259
-+ png_set_first_frame_is_hidden @260
-+ png_read_frame_head @261
-+ png_set_progressive_frame_fn @262
-+ png_write_frame_head @263
-+ png_write_frame_tail @264
+ png_image_write_to_memory @245
++ png_get_acTL @246
++ png_set_acTL @247
++ png_get_num_frames @248
++ png_get_num_plays @249
++ png_get_next_frame_fcTL @250
++ png_set_next_frame_fcTL @251
++ png_get_next_frame_width @252
++ png_get_next_frame_height @253
++ png_get_next_frame_x_offset @254
++ png_get_next_frame_y_offset @255
++ png_get_next_frame_delay_num @256
++ png_get_next_frame_delay_den @257
++ png_get_next_frame_dispose_op @258
++ png_get_next_frame_blend_op @259
++ png_get_first_frame_is_hidden @260
++ png_set_first_frame_is_hidden @261
++ png_read_frame_head @262
++ png_set_progressive_frame_fn @263
++ png_write_frame_head @264
++ png_write_frame_tail @265
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 06:26:31 +0000