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 <[email protected]>
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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