Arpad Panyik ef651b84ce swscale: Refactor XYZ+RGB state and add function hooks ...

Prepare for xyz12Torgb48 architecture-specific optimizations in
subsequent patches by:
 - Grouping XYZ+RGB gamma LUTs and 3x3 matrices into SwsColorXform
   (ctx->xyz2rgb and ctx->rgb2xyz), replacing scattered fields.
 - Dropping the unused last matrix column giving the same or smaller
   SwsInternal size.
 - Renaming ff_xyz12Torgb48 and ff_rgb48Toxyz12 and routing calls via
   the new per-context function pointer (ctx->xyz12Torgb48 and
   ctx->rgb48Toxyz12) in graph.c and swscale.c.
 - Adding ff_sws_init_xyzdsp and invoking it in swscale init paths
   (normal and unscaled).
 - Making fill_xyztables public to ease its setup later in checkasm.

These modifications do not introduce any functional changes.

Signed-off-by: Arpad Panyik <Arpad.Panyik@arm.com>

2025-12-05 10:28:18 +00:00

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