3 Commits

Author	SHA1	Message	Date
skal	bbe32df1e3	add alpha dithering for lossy ... new options: dwebp -alpha_dither vwebp -noalphadither When the source was marked as quantized, we use a threshold-averaging filter to smooth the decoded alpha plane. Note: this option forces the decoding of alpha data in one pass, and might slow the decoding a bit. The new field in WebPDecoderOptions struct is 'alpha_dithering_strength' (0 by default, means: off). Max strength value is '100'. Change-Id: I218e21af96360d4781587fede95f8ea4e2b7287a	2014-06-14 00:06:16 +02:00
skal	2bcad89b4c	allow some more stdin/stout I/O ... * allow reading from stdin for dwebp / vwebp * allow writing to stdout for gif2webp by introducing a new function ExUtilReadFromStdin() Example use: cat in.webp | dwebp -o - -- - > out.png Note that the '-- -' option must appear *last* (as per general fashion for '--' option parsing) Change-Id: I8df0f3a246cc325925d6b6f668ba060f7dd81d68	2014-03-12 19:32:16 +01:00
James Zern	2c6bb42806	add man/vwebp.1 ... Change-Id: I3257fdeb7d48af99946f751e3e2cd07660117255	2014-01-10 17:43:03 -08:00