From 941982786f4359381e7d4b98c71a2db0f8eb5c4d Mon Sep 17 00:00:00 2001 From: John Cupitt Date: Wed, 13 Nov 2013 13:17:03 +0000 Subject: [PATCH] doc strings for jpegsave add docs for no_subsample --- libvips/foreign/foreign.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libvips/foreign/foreign.c b/libvips/foreign/foreign.c index 552ec0f2..33de8c4c 100644 --- a/libvips/foreign/foreign.c +++ b/libvips/foreign/foreign.c @@ -2002,6 +2002,7 @@ vips_jpegload( const char *filename, VipsImage **out, ... ) * @optimize_coding: compute optimal Huffman coding tables * @interlace: write an interlaced (progressive) jpeg * @strip: remove all metadata from image + * @no-subsample: disable chroma subsampling * * Write a VIPS image to a file as JPEG. * @@ -2036,6 +2037,9 @@ vips_jpegload( const char *filename, VipsImage **out, ... ) * If @strip is set, no EXIF data, IPCT data, ICC profile or XMP metadata is * written into the output file. * + * If @no-subsample is set, chrominance subsampling is disabled. This will + * improve quality at the cost of larger file size. Useful for high Q factors. + * * See also: vips_jpegsave_buffer(), vips_image_write_file(). * * Returns: 0 on success, -1 on error. @@ -2067,6 +2071,7 @@ vips_jpegsave( VipsImage *in, const char *filename, ... ) * @optimize_coding: compute optimal Huffman coding tables * @interlace: write an interlaced (progressive) jpeg * @strip: remove all metadata from image + * @no-subsample: disable chroma subsampling * * As vips_jpegsave(), but save to a memory buffer. * @@ -2117,6 +2122,7 @@ vips_jpegsave_buffer( VipsImage *in, void **buf, size_t *len, ... ) * @profile: attach this ICC profile * @optimize_coding: compute optimal Huffman coding tables * @strip: remove all metadata from image + * @no-subsample: disable chroma subsampling * * As vips_jpegsave(), but save as a mime jpeg on stdout. *