Mar 9, 2021, 17:38 by ffm...@haasn.xyz: > From: Niklas Haas <g...@haasn.xyz> > > This filter conceptually maps the libplacebo `pl_renderer` API into > libavfilter, which is a high-level image rendering API designed to work > with an RGB pipeline internally. As such, there's no way to avoid e.g. > chroma interpolation with this filter, although new versions of > libplacebo support outputting back to subsampled YCbCr after processing > is done. > > That being said, `pl_renderer` supports automatic integration of the > majority of libplacebo's shaders, ranging from debanding to tone > mapping, and also supports loading custom mpv-style user shaders, making > this API a natural candidate for getting a lot of functionality out of > relatively little code. > > In the future, I may approach this problem either by rewriting this > filter to also support a non-renderer codepath, or by upgrading > libplacebo's renderer to support a full YCbCr pipeline. > > It's worth noting that this filter could be extended in the future to > support HWframes frames of type AV_PIX_FMT_VULKAN, but this is not > currently possible due to API limitations in the vulkan hwaccel. > (Although it's also worth pointing out that, apart from a single > `pl_vulkan_create` call, the current `vf_libplacebo` code does not > depend on vulkan at all - so in theory it could be extended to support > OpenGL or other libplacebo backends) >
Sorry, as we discussed on IRC the Vulkan hwcontext should be improved first and this filter should be kept as a pure hardware filter. I'm sorry, I know I've been holding up this patch for a few months, but could you wait until I do my job with the hwcontext? I'm already working on dozens of different things and I don't need extra pressure. Others can discuss filter options and such, but do keep in mind this isn't going to be the final version. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
