Change #254109

Comments

avfilter/vf_drawvg: skip conversions when a color is assigned to a variable.
In libcairo, colors are defined as 4 separate components, and each one is double
between 0 and 1. Before this commit, colors stored in variables (like `defhsla`)
were converted to a `0xRRGGBBAA` value, which introduced some issues due to
rounding errors.

Now, when a color is assigned to a variable, the original values (a `double[4]`)
are stored in a dedicated array (`color_vars`), so no conversion is needed.

This change also reduces the cost of reading a color from a variable (no need
for `av_be2ne32`, or the `color[i] / 255` operations).

Signed-off-by: Ayose <ayosec@gmail.com>

Changed files

• libavfilter/vf_drawvg.c