diff options
Diffstat (limited to 'third_party/libtiff/tif_dirinfo.c')
| -rw-r--r-- | third_party/libtiff/tif_dirinfo.c | 105 |
1 files changed, 104 insertions, 1 deletions
diff --git a/third_party/libtiff/tif_dirinfo.c b/third_party/libtiff/tif_dirinfo.c index 23ad002055..4904f540e5 100644 --- a/third_party/libtiff/tif_dirinfo.c +++ b/third_party/libtiff/tif_dirinfo.c @@ -1,4 +1,4 @@ -/* $Id: tif_dirinfo.c,v 1.126 2016-11-18 02:52:13 bfriesen Exp $ */ +/* $Id: tif_dirinfo.c,v 1.127 2017-06-01 12:44:04 erouault Exp $ */ /* * Copyright (c) 1988-1997 Sam Leffler @@ -956,6 +956,109 @@ TIFFMergeFieldInfo(TIFF* tif, const TIFFFieldInfo info[], uint32 n) return 0; } +int +_TIFFCheckFieldIsValidForCodec(TIFF *tif, ttag_t tag) +{ + /* Filter out non-codec specific tags */ + switch (tag) { + /* Shared tags */ + case TIFFTAG_PREDICTOR: + /* JPEG tags */ + case TIFFTAG_JPEGTABLES: + /* OJPEG tags */ + case TIFFTAG_JPEGIFOFFSET: + case TIFFTAG_JPEGIFBYTECOUNT: + case TIFFTAG_JPEGQTABLES: + case TIFFTAG_JPEGDCTABLES: + case TIFFTAG_JPEGACTABLES: + case TIFFTAG_JPEGPROC: + case TIFFTAG_JPEGRESTARTINTERVAL: + /* CCITT* */ + case TIFFTAG_BADFAXLINES: + case TIFFTAG_CLEANFAXDATA: + case TIFFTAG_CONSECUTIVEBADFAXLINES: + case TIFFTAG_GROUP3OPTIONS: + case TIFFTAG_GROUP4OPTIONS: + break; + default: + return 1; + } + /* Check if codec specific tags are allowed for the current + * compression scheme (codec) */ + switch (tif->tif_dir.td_compression) { + case COMPRESSION_LZW: + if (tag == TIFFTAG_PREDICTOR) + return 1; + break; + case COMPRESSION_PACKBITS: + /* No codec-specific tags */ + break; + case COMPRESSION_THUNDERSCAN: + /* No codec-specific tags */ + break; + case COMPRESSION_NEXT: + /* No codec-specific tags */ + break; + case COMPRESSION_JPEG: + if (tag == TIFFTAG_JPEGTABLES) + return 1; + break; + case COMPRESSION_OJPEG: + switch (tag) { + case TIFFTAG_JPEGIFOFFSET: + case TIFFTAG_JPEGIFBYTECOUNT: + case TIFFTAG_JPEGQTABLES: + case TIFFTAG_JPEGDCTABLES: + case TIFFTAG_JPEGACTABLES: + case TIFFTAG_JPEGPROC: + case TIFFTAG_JPEGRESTARTINTERVAL: + return 1; + } + break; + case COMPRESSION_CCITTRLE: + case COMPRESSION_CCITTRLEW: + case COMPRESSION_CCITTFAX3: + case COMPRESSION_CCITTFAX4: + switch (tag) { + case TIFFTAG_BADFAXLINES: + case TIFFTAG_CLEANFAXDATA: + case TIFFTAG_CONSECUTIVEBADFAXLINES: + return 1; + case TIFFTAG_GROUP3OPTIONS: + if (tif->tif_dir.td_compression == COMPRESSION_CCITTFAX3) + return 1; + break; + case TIFFTAG_GROUP4OPTIONS: + if (tif->tif_dir.td_compression == COMPRESSION_CCITTFAX4) + return 1; + break; + } + break; + case COMPRESSION_JBIG: + /* No codec-specific tags */ + break; + case COMPRESSION_DEFLATE: + case COMPRESSION_ADOBE_DEFLATE: + if (tag == TIFFTAG_PREDICTOR) + return 1; + break; + case COMPRESSION_PIXARLOG: + if (tag == TIFFTAG_PREDICTOR) + return 1; + break; + case COMPRESSION_SGILOG: + case COMPRESSION_SGILOG24: + /* No codec-specific tags */ + break; + case COMPRESSION_LZMA: + if (tag == TIFFTAG_PREDICTOR) + return 1; + break; + + } + return 0; +} + /* vim: set ts=8 sts=8 sw=8 noet: */ /* |