diff options
Diffstat (limited to 'jcmaster.c')
| -rw-r--r-- | jcmaster.c | 8 |
1 files changed, 4 insertions, 4 deletions
@@ -5,7 +5,7 @@ * Copyright (C) 1991-1997, Thomas G. Lane. * Modified 2003-2010 by Guido Vollbeding. * libjpeg-turbo Modifications: - * Copyright (C) 2010, 2016, D. R. Commander. + * Copyright (C) 2010, 2016, 2018, D. R. Commander. * For conditions of distribution and use, see the accompanying README.ijg * file. * @@ -234,9 +234,9 @@ validate_script(j_compress_ptr cinfo) Al = scanptr->Al; if (cinfo->progressive_mode) { #ifdef C_PROGRESSIVE_SUPPORTED - /* The JPEG spec simply gives the ranges 0..13 for Ah and Al, but that - * seems wrong: the upper bound ought to depend on data precision. - * Perhaps they really meant 0..N+1 for N-bit precision. + /* Rec. ITU-T T.81 | ISO/IEC 10918-1 simply gives the ranges 0..13 for Ah + * and Al, but that seems wrong: the upper bound ought to depend on data + * precision. Perhaps they really meant 0..N+1 for N-bit precision. * Here we allow 0..10 for 8-bit data; Al larger than 10 results in * out-of-range reconstructed DC values during the first DC scan, * which might cause problems for some decoders. |