diff options
Diffstat (limited to 'third_party/libtiff/tif_lzw.c')
| -rw-r--r-- | third_party/libtiff/tif_lzw.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/third_party/libtiff/tif_lzw.c b/third_party/libtiff/tif_lzw.c index 5f1acf83da..bc8f9c84a6 100644 --- a/third_party/libtiff/tif_lzw.c +++ b/third_party/libtiff/tif_lzw.c @@ -1,4 +1,4 @@ -/* $Id: tif_lzw.c,v 1.55 2017-05-17 09:38:58 erouault Exp $ */ +/* $Id: tif_lzw.c,v 1.57 2017-07-11 10:54:29 erouault Exp $ */ /* * Copyright (c) 1988-1997 Sam Leffler @@ -275,7 +275,8 @@ LZWPreDecode(TIFF* tif, uint16 s) /* * Check for old bit-reversed codes. */ - if (tif->tif_rawdata[0] == 0 && (tif->tif_rawdata[1] & 0x1)) { + if (tif->tif_rawcc >= 2 && + tif->tif_rawdata[0] == 0 && (tif->tif_rawdata[1] & 0x1)) { #ifdef LZW_COMPAT if (!sp->dec_decode) { TIFFWarningExt(tif->tif_clientdata, module, @@ -655,6 +656,9 @@ LZWDecodeCompat(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s) } bp = (unsigned char *)tif->tif_rawcp; +#ifdef LZW_CHECKEOS + sp->dec_bitsleft = (((uint64)tif->tif_rawcc) << 3); +#endif nbits = sp->lzw_nbits; nextdata = sp->lzw_nextdata; nextbits = sp->lzw_nextbits; @@ -764,6 +768,7 @@ LZWDecodeCompat(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s) } } + tif->tif_rawcc -= (tmsize_t)( (uint8*) bp - tif->tif_rawcp ); tif->tif_rawcp = (uint8*) bp; sp->lzw_nbits = (unsigned short)nbits; sp->lzw_nextdata = nextdata; |