diff options
Diffstat (limited to 'thirdparty/libpng/pngrutil.c')
| -rw-r--r-- | thirdparty/libpng/pngrutil.c | 44 |
1 files changed, 41 insertions, 3 deletions
diff --git a/thirdparty/libpng/pngrutil.c b/thirdparty/libpng/pngrutil.c index f60545bf90..9cde64845c 100644 --- a/thirdparty/libpng/pngrutil.c +++ b/thirdparty/libpng/pngrutil.c @@ -1,7 +1,7 @@ /* pngrutil.c - utilities to read a PNG file * - * Last changed in libpng 1.6.30 [(PENDING RELEASE)] + * Last changed in libpng 1.6.31 [(PENDING RELEASE)] * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) @@ -2009,6 +2009,44 @@ png_handle_bKGD(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) } #endif +#ifdef PNG_READ_eXIf_SUPPORTED +void /* PRIVATE */ +png_handle_eXIf(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) +{ + unsigned int i; + png_bytep eXIf_buf; + + png_debug(1, "in png_handle_eXIf"); + + if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) + png_chunk_error(png_ptr, "missing IHDR"); + + else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_eXIf) != 0) + { + png_crc_finish(png_ptr, length); + png_chunk_benign_error(png_ptr, "duplicate"); + return; + } + + eXIf_buf = png_voidcast(png_bytep, + png_malloc_warn(png_ptr, length)); + + for (i = 0; i < length; i++) + { + png_byte buf[1]; + png_crc_read(png_ptr, buf, 1); + eXIf_buf[i] = buf[0]; + } + + if (png_crc_finish(png_ptr, 0) != 0) + return; + + info_ptr->num_exif = length; + + png_set_eXIf(png_ptr, info_ptr, eXIf_buf); +} +#endif + #ifdef PNG_READ_hIST_SUPPORTED void /* PRIVATE */ png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) @@ -2978,7 +3016,7 @@ png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr, case 2: png_ptr->user_chunk_cache_max = 1; png_chunk_benign_error(png_ptr, "no space in chunk cache"); - /* FALL THROUGH */ + /* FALLTHROUGH */ case 1: /* NOTE: prior to 1.6.0 this case resulted in an unknown critical * chunk being skipped, now there will be a hard error below. @@ -2987,7 +3025,7 @@ png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr, default: /* not at limit */ --(png_ptr->user_chunk_cache_max); - /* FALL THROUGH */ + /* FALLTHROUGH */ case 0: /* no limit */ # endif /* USER_LIMITS */ /* Here when the limit isn't reached or when limits are compiled |