4 Commits

Author	SHA1	Message	Date
James Zern	605a712701	simplify __cplusplus ifdef ... drop c_plusplus which is from a quite ancient pre-standard compiler Change-Id: I9e357b3292a6b52b14c2641ba11f4f872c04b7fb	2013-12-16 20:16:02 -08:00
skal	cbdd3e6e53	add a -dither dithering option to the decoder ... Even at high quality setting, the U/V quantizer step is limited to 4 which can lead to banding on gradient. This option allows to selectively apply some randomness to potentially flattened-out U/V blocks and attenuate the banding. This option is off by default in 'dwebp', but set to -dither 50 by default in 'vwebp'. Note: depending on the number of blocks selectively dithered, we can have up to a 10% slow-down in decoding speed it seems. Change-Id: Icc2446007f33ddacb60b3a80a9e63f2d5ad162de	2013-11-27 00:57:51 -08:00
Pascal Massimino	596a6d73ce	make use of 'extern' consistent in function declarations ... Change-Id: I18e050db3111e52acfe97da09cdf1860f3e15936	2013-10-30 03:23:21 -07:00
Pascal Massimino	98aa33cf1e	extract random utils to their own file util/random.[ch] ... they'll be used for decoding too, probably. Change-Id: Id9cbb250c74fc0e876d4ea46b1b3dbf8356d6725	2013-10-30 02:00:33 -07:00