On 7/9/16, Rostislav Pehlivanov <atomnu...@gmail.com> wrote: > On 9 July 2016 at 16:29, Martin Vignali <martin.vign...@gmail.com> wrote: > >> Hello, >> >> In attach patch to add decoding of .psd file (Photoshop file). >> >> PSD file can contain merge layers data at the end of the file (Image Data >> Section) >> >> This patch add support for this kind of files, using uncompress data Image >> Data Section >> >> Support Gray/A, and RGB/A with 8b or 16 bits by channel. >> >> >> Samples can be found here : >> >> https://we.tl/GK6yQhUV8j >> >> >> Comments welcome >> >> Martin >> >> _______________________________________________ >> ffmpeg-devel mailing list >> ffmpeg-devel@ffmpeg.org >> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel >> >> > This has the potential to turn into the shittiest thing in libavcodec. PSD > is a notoriously horrible format and I believe code needed to read and > render it belongs outside of libavcodec. Not to mention that close to 90% > of the features it has are unsupported by the framework, be it vectors, the > colorspaces, layers, etc. The decoder's also pretty raw and only supports > uncompressed images, with every other mode currently unsupported, giving > the deceptive idea it's a simple decoder for a simple format. A decoder > which can open a very small part of all psd files floating around isn't a > very useful one.
Why? Neither exr decoder was good, at beginning it supported only raw. > There is simply no simple way to expose all the quirks of the format in a > nice way to libavcodec, given that this decoder can be potentially as > complex and bad as photoshop. Please make this a separate library or a > program, you don't even need any framework features since it's a simple > bytestream. > > In case you need the testament of someone who's done the work already take > a read at this: > https://github.com/gco/xee/blob/master/XeePhotoshopLoader.m#L108-L136 > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel > _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
