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swscale/options: add -sws_dither none alias

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While this one was technically supported on account of the generic options
code allowing "none" as a valid alias for 0, not having it listed here meant
it never showed up in e.g. the -h output, and is also inconsistent with other
places in the code that generally add an explicit alias with appropriate
documentation. Reduces user confusion at negligible cost.

Fixes: #9192
Signed-off-by: Niklas Haas <git@haasn.dev>
Sponsored-by: Sovereign Tech Fund
This commit is contained in:
Niklas Haas 2024-12-19 12:41:22 +01:00
parent 253b8977c0
commit 5ca5bbd462
1 changed files with 1 additions and 0 deletions
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libswscale/options.c
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@ -71,6 +71,7 @@ static const AVOption swscale_options[] = {
{ "sws_dither", "set dithering algorithm", OFFSET(dither), AV_OPT_TYPE_INT, { .i64 = SWS_DITHER_AUTO }, .flags = VE, .unit = "sws_dither", .max = SWS_DITHER_NB - 1 },
{ "auto", "automatic selection", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_AUTO }, .flags = VE, .unit = "sws_dither" },
{ "none", "no dithering", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_NONE }, .flags = VE, .unit = "sws_dither" },
{ "bayer", "ordered matrix dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_BAYER }, .flags = VE, .unit = "sws_dither" },
{ "ed", "full error diffusion", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_ED }, .flags = VE, .unit = "sws_dither" },
{ "a_dither", "arithmetic addition dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_A_DITHER }, .flags = VE, .unit = "sws_dither" },