5 Commits

Author	SHA1	Message	Date
James Zern	f324b7f9ba	cosmetics: normalize fn proto & decl param names ... BUG=webp:355 Change-Id: If020eb3b064cdb11853d1fa47058acae34752ce3	2017-08-26 14:17:31 -07:00
Vincent Rabaud	c8f14093ac	Fix code to compile with C++. ... Change-Id: I324236440cb853cb3c8fb278ef22449cd9772ad7	2017-05-15 16:22:03 +02:00
Pascal Massimino	9273e441da	fix TIFF encoder regarding rgbA/RGBA ... Encoder: We were always using ExtraSamples=1, which means associated-alpha. But we don't need the (lossy) excursion to rgbA format. We can save the samples as RGBA directly, by changing ExtraSamples to '2'. The TIFF encoder now checks the colorspace properly, to handle premultiplied format as well as non-premultiplied. Decoder: The result of TIFFReadRGBAImageOriented() is always pre-multiply. So, in case an alpha channel is present, we need to unmultiply it before calling WebPPictureImportRGBA(). See: https://www.itu.int/itudoc/itu-t/com16/tiff-fx/docs/tiff6.pdf (page 31) and also http://www.asmail.be/msg0055469184.html Change-Id: I3258bfdb0eb2e1a53d6c04414f55edb2926c938c	2017-03-03 10:36:29 -08:00
Pascal Massimino	259e98286a	replace 'ptr + y * stride' by 'ptr += stride' ... This is to prevent potential overflow. Change-Id: I9d21cfe790ba975bd5e117b025ea4d9deaeae4ab	2017-01-04 00:54:23 -08:00
Pascal Massimino	af1ad3e2dd	libimageenc.a: extract image-saving code from dwebp ... BUG=webp:277 Change-Id: I2c0e1df7b13b1f77474b5478048fef022e90f77a	2016-09-08 19:11:26 -07:00