diff options
Diffstat (limited to 'third_party/libtiff/tif_dir.c')
| -rw-r--r-- | third_party/libtiff/tif_dir.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/third_party/libtiff/tif_dir.c b/third_party/libtiff/tif_dir.c index 73212c02db..16ce3d3cee 100644 --- a/third_party/libtiff/tif_dir.c +++ b/third_party/libtiff/tif_dir.c @@ -426,6 +426,14 @@ _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap) case TIFFTAG_REFERENCEBLACKWHITE: /* XXX should check for null range */ _TIFFsetFloatArray(&td->td_refblackwhite, va_arg(ap, float*), 6); + for (int i = 0; i < 6; i++) { + if (isnan(td->td_refblackwhite[i])) { + if (i % 2 == 0) + td->td_refblackwhite[i] = 0; + else + td->td_refblackwhite[i] = pow(2, td->td_bitspersample) - 1; + } + } break; case TIFFTAG_INKNAMES: v = (uint16) va_arg(ap, uint16_vap); |