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Merge pull request #1199 from lovell/png-header-palette-bit-depth 

PNG loader: attach palette bit depth, if any, as metadata
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John Cupitt 2019-01-01 19:02:22 +00:00 committed by GitHub
parent 218005bae7 7854ead877
commit 2b8db2e594
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1 changed files with 5 additions and 0 deletions
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5
libvips/foreign/vipspng.c
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@ -490,6 +490,11 @@ png2vips_header( Read *read, VipsImage *out )
return( -1 );
}
/* Attach original palette bit depth, if any, as metadata.
*/
if( color_type == PNG_COLOR_TYPE_PALETTE )
vips_image_set_int( out, "palette-bit-depth", bit_depth );
return( 0 );
}