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enable separated/multiband load and save for tiff format

This commit is contained in:
Angel Sánchez 2019-11-13 16:16:22 +01:00
parent da8ae29abe
commit fa0514a4d4
2 changed files with 19 additions and 2 deletions
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15
libvips/foreign/tiff2vips.c
View File

@ -250,6 +250,7 @@ typedef struct _RtiffHeader {
int samples_per_pixel;
int bits_per_sample;
int photometric_interpretation;
int inkset;
int sample_format;
gboolean separate;
int orientation;
@ -1310,6 +1311,7 @@ rtiff_parse_copy( Rtiff *rtiff, VipsImage *out )
int samples_per_pixel = rtiff->header.samples_per_pixel;
int photometric_interpretation =
rtiff->header.photometric_interpretation;
int inkset = rtiff->header.inkset;
if( rtiff_non_fractional( rtiff ) )
return( -1 );
@ -1339,9 +1341,15 @@ rtiff_parse_copy( Rtiff *rtiff, VipsImage *out )
out->Type = VIPS_INTERPRETATION_LAB;
if( samples_per_pixel >= 4 &&
photometric_interpretation == PHOTOMETRIC_SEPARATED )
photometric_interpretation == PHOTOMETRIC_SEPARATED &&
inkset == INKSET_CMYK)
out->Type = VIPS_INTERPRETATION_CMYK;
if (samples_per_pixel >= 1 &&
photometric_interpretation == PHOTOMETRIC_SEPARATED &&
inkset == INKSET_MULTIINK)
out->Type = VIPS_INTERPRETATION_MULTIBAND;
rtiff->sfn = rtiff_memcpy_line;
rtiff->client = out;
@ -2151,7 +2159,10 @@ rtiff_header_read( Rtiff *rtiff, RtiffHeader *header )
TIFFTAG_BITSPERSAMPLE, &header->bits_per_sample ) ||
!tfget16( rtiff->tiff,
TIFFTAG_PHOTOMETRIC,
&header->photometric_interpretation ) )
&header->photometric_interpretation ) ||
!tfget16(rtiff->tiff,
TIFFTAG_INKSET,
&header->inkset ) )
return( -1 );
TIFFGetFieldDefaulted( rtiff->tiff,

6
libvips/foreign/vips2tiff.c
View File

@ -677,6 +677,12 @@ wtiff_write_header( Wtiff *wtiff, Layer *layer )
TIFFTAG_INKSET, INKSET_CMYK );
colour_bands = 4;
}
else if (wtiff->im->Type == VIPS_INTERPRETATION_MULTIBAND ) {
photometric = PHOTOMETRIC_SEPARATED;
TIFFSetField(tif,
TIFFTAG_INKSET, INKSET_MULTIINK);
colour_bands = 4;
}
else if( wtiff->compression == COMPRESSION_JPEG &&
wtiff->im->Bands == 3 &&
wtiff->im->BandFmt == VIPS_FORMAT_UCHAR &&