* [FFmpeg-devel] [PATCH] avfilter/zscale: add support for resize filter spline64 (PR #21012)
@ 2025-11-25 7:14 Gyan Doshi via ffmpeg-devel
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From: Gyan Doshi via ffmpeg-devel @ 2025-11-25 7:14 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: Gyan Doshi
PR #21012 opened by Gyan Doshi (GyanD)
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21012
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21012.patch
Fixes #20928
>From 2b221fdb4a1bdc556225eb15688dc112b81f2246 Mon Sep 17 00:00:00 2001
From: Gyan Doshi <ffmpeg@gyani.pro>
Date: Tue, 25 Nov 2025 12:41:37 +0530
Subject: [PATCH] avfilter/zscale: add support for resize filter spline64
Fixes #20928
---
doc/filters.texi | 1 +
libavfilter/vf_zscale.c | 5 +++--
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/doc/filters.texi b/doc/filters.texi
index 7605812428..168ea0d2da 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -26504,6 +26504,7 @@ Possible values are:
@item bicubic
@item spline16
@item spline36
+@item spline64
@item lanczos
@end table
diff --git a/libavfilter/vf_zscale.c b/libavfilter/vf_zscale.c
index 9ea50133c6..96cbd3c4b2 100644
--- a/libavfilter/vf_zscale.c
+++ b/libavfilter/vf_zscale.c
@@ -940,13 +940,14 @@ static const AVOption zscale_options[] = {
{ "ordered", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ORDERED}, 0, 0, FLAGS, .unit = "dither" },
{ "random", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_RANDOM}, 0, 0, FLAGS, .unit = "dither" },
{ "error_diffusion", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ERROR_DIFFUSION}, 0, 0, FLAGS, .unit = "dither" },
- { "filter", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, .unit = "filter" },
- { "f", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, .unit = "filter" },
+ { "filter", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_SPLINE64, FLAGS, .unit = "filter" },
+ { "f", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_SPLINE64, FLAGS, .unit = "filter" },
{ "point", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_POINT}, 0, 0, FLAGS, .unit = "filter" },
{ "bilinear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, 0, FLAGS, .unit = "filter" },
{ "bicubic", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BICUBIC}, 0, 0, FLAGS, .unit = "filter" },
{ "spline16", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE16}, 0, 0, FLAGS, .unit = "filter" },
{ "spline36", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE36}, 0, 0, FLAGS, .unit = "filter" },
+ { "spline64", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE64}, 0, 0, FLAGS, .unit = "filter" },
{ "lanczos", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_LANCZOS}, 0, 0, FLAGS, .unit = "filter" },
{ "out_range", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, .unit = "range" },
{ "range", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, .unit = "range" },
--
2.49.1
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2025-11-25 7:14 [FFmpeg-devel] [PATCH] avfilter/zscale: add support for resize filter spline64 (PR #21012) Gyan Doshi via ffmpeg-devel
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