[FFmpeg-cvslog] lavfi/vf_scale: remove the nb_slices option

[Anton Khirnov]

ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Tue Jul  6 10:17:06 2021 +0200| [ca32d0462cd9a2d161be036fc45dc429013d0840] | committer: Anton Khirnov

lavfi/vf_scale: remove the nb_slices option

It was intended for debugging only and has been superseded by the
standalone tool for testing sliced scaling.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ca32d0462cd9a2d161be036fc45dc429013d0840
---

 libavfilter/vf_scale.c | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/libavfilter/vf_scale.c b/libavfilter/vf_scale.c
index 7ca833bbb1..909080b829 100644
--- a/libavfilter/vf_scale.c
+++ b/libavfilter/vf_scale.c
@@ -148,8 +148,6 @@ typedef struct ScaleContext {
     int force_original_aspect_ratio;
     int force_divisible_by;
 
-    int nb_slices;
-
     int eval_mode;              ///< expression evaluation mode
 
 } ScaleContext;
@@ -802,17 +800,6 @@ scale:
         ret = scale_slice(scale, out, in, scale->isws[0], 0, (link->h+1)/2, 2, 0);
         if (ret >= 0)
             ret = scale_slice(scale, out, in, scale->isws[1], 0,  link->h   /2, 2, 1);
-    } else if (scale->nb_slices) {
-        int i, slice_h, slice_start, slice_end = 0;
-        const int nb_slices = FFMIN(scale->nb_slices, link->h);
-        for (i = 0; i < nb_slices; i++) {
-            slice_start = slice_end;
-            slice_end   = (link->h * (i+1)) / nb_slices;
-            slice_h     = slice_end - slice_start;
-            ret = scale_slice(scale, out, in, scale->sws, slice_start, slice_h, 1, 0);
-            if (ret < 0)
-                break;
-        }
     } else {
         ret = scale_slice(scale, out, in, scale->sws, 0, link->h, 1, 0);
     }
@@ -944,7 +931,6 @@ static const AVOption scale_options[] = {
     { "force_divisible_by", "enforce that the output resolution is divisible by a defined integer when force_original_aspect_ratio is used", OFFSET(force_divisible_by), AV_OPT_TYPE_INT, { .i64 = 1}, 1, 256, FLAGS },
     { "param0", "Scaler param 0",             OFFSET(param[0]),  AV_OPT_TYPE_DOUBLE, { .dbl = SWS_PARAM_DEFAULT  }, INT_MIN, INT_MAX, FLAGS },
     { "param1", "Scaler param 1",             OFFSET(param[1]),  AV_OPT_TYPE_DOUBLE, { .dbl = SWS_PARAM_DEFAULT  }, INT_MIN, INT_MAX, FLAGS },
-    { "nb_slices", "set the number of slices (debug purpose only)", OFFSET(nb_slices), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
     { "eval", "specify when to evaluate expressions", OFFSET(eval_mode), AV_OPT_TYPE_INT, {.i64 = EVAL_MODE_INIT}, 0, EVAL_MODE_NB-1, FLAGS, "eval" },
          { "init",  "eval expressions once during initialization", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_INIT},  .flags = FLAGS, .unit = "eval" },
          { "frame", "eval expressions during initialization and per-frame", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_FRAME}, .flags = FLAGS, .unit = "eval" },