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For example, BT709, BT601, and BT2020_10 all have theoretically different transfer functions, but the same function in practice. In these cases, we should use the fast path for negotiating. Also, BT2020_12 is essentially the same as the other three, just with one more decimal point, so it gives the same result for fewer bits. This is now also aliased to the former three. Also make videoconvert do passthrough if the caps have equivalent transfer functions but are otherwise matching. As of the previous commit, we write the correct transfer function for BT601, instead of the (functionally identical but different ISO code) transfer function for BT709. Files created using GStreamer prior to that commit write the wrong transfer function for BT601 and are, strictly speaking, 2:4:5:4 instead. However, this commit takes care of negotiation, so that conversions from/to the same transfer function are done using the fast path. Fixes #783 Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/724> |
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| gstvideoconvert.c | ||
| gstvideoconvert.h | ||
| meson.build | ||