summaryrefslogtreecommitdiff
path: root/Build/source/libs/libpng/libpng-src/pngwutil.c
diff options
context:
space:
mode:
authorAkira Kakuto <kakuto@fuk.kindai.ac.jp>2017-07-27 20:38:00 +0000
committerAkira Kakuto <kakuto@fuk.kindai.ac.jp>2017-07-27 20:38:00 +0000
commit1eaf921900a3d76fd3daf0e53dc8cf23de15cb72 (patch)
tree46300a71eb2747c63cc15fcd788cff292b46a8e4 /Build/source/libs/libpng/libpng-src/pngwutil.c
parentbdf3513abe506a554215a51797aa9251b3069b6c (diff)
libpng-1.6.31
git-svn-id: svn://tug.org/texlive/trunk@44898 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/libpng/libpng-src/pngwutil.c')
-rw-r--r--Build/source/libs/libpng/libpng-src/pngwutil.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/Build/source/libs/libpng/libpng-src/pngwutil.c b/Build/source/libs/libpng/libpng-src/pngwutil.c
index dd800586be6..348bb524ddf 100644
--- a/Build/source/libs/libpng/libpng-src/pngwutil.c
+++ b/Build/source/libs/libpng/libpng-src/pngwutil.c
@@ -1473,6 +1473,37 @@ png_write_bKGD(png_structrp png_ptr, png_const_color_16p back, int color_type)
}
#endif
+#ifdef PNG_WRITE_eXIf_SUPPORTED
+/* Write the Exif data */
+void /* PRIVATE */
+png_write_eXIf(png_structrp png_ptr, png_bytep exif, int num_exif)
+{
+ int i;
+ png_byte buf[3];
+
+ png_debug(1, "in png_write_eXIf");
+
+ if (num_exif > (int)png_ptr->num_exif)
+ {
+ png_debug2(3, "num_exif = %d, png_ptr->num_exif = %d", num_exif,
+ png_ptr->num_exif);
+
+ png_warning(png_ptr, "Invalid number of exif bytes specified");
+ return;
+ }
+
+ png_write_chunk_header(png_ptr, png_eXIf, (png_uint_32)(num_exif));
+
+ for (i = 0; i < num_exif; i++)
+ {
+ buf[i] = exif[i];
+ png_write_chunk_data(png_ptr, buf, (png_size_t)1);
+ }
+
+ png_write_chunk_end(png_ptr);
+}
+#endif
+
#ifdef PNG_WRITE_hIST_SUPPORTED
/* Write the histogram */
void /* PRIVATE */