Le 10/10/2024 à 22:45, Michael Niedermayer a écrit :
This makes a 16bit RGB raw sample 25% faster at a 2% loss of compression with
rawlsb=4
Please test and comment, especially if you are an archivist caring about
compression and speed
Id like to know if this is a direction (that is trading compression against
speed) that
is wanted
This is something I was having in mind for a long time but never spent
the time to implement it, great that this is done!
Definitely something useful as lsb at 16-bit can not really be compressed.
[...]
+// put_symbol(c, state, f->rawlsb, 0);
I was having in mind to add the count of zeroed lsb and to not store them,
sometimes the lsb are upscale with zeroes but we need to keep the hint that it
is 16-bit.
[...]
In practice the 16-bit version of the compressor could be used also for
16-bit RGB content, it may be a bit faster especially on huge frames
with a bit less memory usage, but this adaptation can be made in a later
step.
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