Mercurial > octave-libtiff
changeset 31106:f5a88c0a61ab
Support for GrayResponseCurve and GrayResponseUnit tags
* __tiff__.cc: Handled GrayResponseCurve and GrayResponseUnit tags according
to the format specification.
| author | magedrifaat <magedrifaat@gmail.com> |
|---|---|
| date | Tue, 05 Jul 2022 03:55:10 +0200 |
| parents | 7c5b8a294f60 |
| children | fae39152ddcf |
| files | libinterp/dldfcn/__tiff__.cc |
| diffstat | 1 files changed, 11 insertions(+), 2 deletions(-) [+] |
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--- a/libinterp/dldfcn/__tiff__.cc Tue Jul 05 03:44:41 2022 +0200 +++ b/libinterp/dldfcn/__tiff__.cc Tue Jul 05 03:55:10 2022 +0200 @@ -117,7 +117,6 @@ octave_value_list interpret_data (void *data, uint32_t count, TIFFDataType tag_datatype) { - // TODO(maged): Find the correct way fo returning multivalues octave_value_list ovl_data; // Apparently matlab converts scalar numerical values into double // but doesn't do the same for arrays @@ -328,6 +327,15 @@ case TIFFTAG_REFERENCEBLACKWHITE: tag_data_ovl = get_array_field_data (tif, fip, 6); break; + case TIFFTAG_GRAYRESPONSECURVE: + { + uint16_t bits_per_sample; + if (! TIFFGetField (tif, TIFFTAG_BITSPERSAMPLE, &bits_per_sample)) + error ("Failed to obtain the bit depth"); + + tag_data_ovl = get_array_field_data (tif, fip, 1<<bits_per_sample); + break; + } case TIFFTAG_COLORMAP: { uint16_t bits_per_sample; @@ -430,10 +438,11 @@ error ("Complex Tags not implemented"); break; } - // Those two tags are not mentioned in the LibTIFF documentation + // These tags are not mentioned in the LibTIFF documentation // but are handled correctly by the library case TIFFTAG_ZIPQUALITY: case TIFFTAG_SGILOGDATAFMT: + case TIFFTAG_GRAYRESPONSEUNIT: { tag_data_ovl = get_scalar_field_data (tif, fip); break;