avfilter/vf_dejudder: use the name 's' for the pointer to the private context

This is shorter and consistent across filters.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavfilter/vf_dejudder.c

@@ -80,40 +80,40 @@ AVFILTER_DEFINE_CLASS(dejudder);
 static int config_out_props(AVFilterLink *outlink)
 {
     AVFilterContext *ctx = outlink->src;
-    DejudderContext *dj = ctx->priv;
+    DejudderContext *s = ctx->priv;
     AVFilterLink *inlink = outlink->src->inputs[0];
 
-    outlink->time_base = av_mul_q(inlink->time_base, av_make_q(1, 2 * dj->cycle));
-    outlink->frame_rate = av_mul_q(inlink->frame_rate, av_make_q(2 * dj->cycle, 1));
+    outlink->time_base = av_mul_q(inlink->time_base, av_make_q(1, 2 * s->cycle));
+    outlink->frame_rate = av_mul_q(inlink->frame_rate, av_make_q(2 * s->cycle, 1));
 
-    av_log(ctx, AV_LOG_VERBOSE, "cycle:%d\n", dj->cycle);
+    av_log(ctx, AV_LOG_VERBOSE, "cycle:%d\n", s->cycle);
 
     return 0;
 }
 
 static av_cold int dejudder_init(AVFilterContext *ctx)
 {
-    DejudderContext *dj = ctx->priv;
+    DejudderContext *s = ctx->priv;
 
-    dj->ringbuff = av_mallocz_array(dj->cycle+2, sizeof(*dj->ringbuff));
-    if (!dj->ringbuff)
+    s->ringbuff = av_mallocz_array(s->cycle+2, sizeof(*s->ringbuff));
+    if (!s->ringbuff)
         return AVERROR(ENOMEM);
 
-    dj->new_pts = 0;
-    dj->i1 = 0;
-    dj->i2 = 1;
-    dj->i3 = 2;
-    dj->i4 = 3;
-    dj->start_count = dj->cycle + 2;
+    s->new_pts = 0;
+    s->i1 = 0;
+    s->i2 = 1;
+    s->i3 = 2;
+    s->i4 = 3;
+    s->start_count = s->cycle + 2;
 
     return 0;
 }
 
 static av_cold void dejudder_uninit(AVFilterContext *ctx)
 {
-    DejudderContext *dj = ctx->priv;
+    DejudderContext *s = ctx->priv;
 
-    av_freep(&(dj->ringbuff));
+    av_freep(&(s->ringbuff));
 }
 
 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
@@ -121,36 +121,36 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
     int k;
     AVFilterContext *ctx  = inlink->dst;
     AVFilterLink *outlink = ctx->outputs[0];
-    DejudderContext *dj   = ctx->priv;
-    int64_t *judbuff      = dj->ringbuff;
+    DejudderContext *s   = ctx->priv;
+    int64_t *judbuff      = s->ringbuff;
     int64_t next_pts      = frame->pts;
     int64_t offset;
 
     if (next_pts == AV_NOPTS_VALUE)
         return ff_filter_frame(outlink, frame);
 
-    if (dj->start_count) {
-        dj->start_count--;
-        dj->new_pts = next_pts * 2 * dj->cycle;
+    if (s->start_count) {
+        s->start_count--;
+        s->new_pts = next_pts * 2 * s->cycle;
     } else {
-        if (next_pts < judbuff[dj->i2]) {
-            offset = next_pts + judbuff[dj->i3] - judbuff[dj->i4] - judbuff[dj->i1];
-            for (k = 0; k < dj->cycle + 2; k++)
+        if (next_pts < judbuff[s->i2]) {
+            offset = next_pts + judbuff[s->i3] - judbuff[s->i4] - judbuff[s->i1];
+            for (k = 0; k < s->cycle + 2; k++)
                 judbuff[k] += offset;
         }
-        dj->new_pts += (dj->cycle - 1) * (judbuff[dj->i3] - judbuff[dj->i1])
-                    + (dj->cycle + 1) * (next_pts - judbuff[dj->i4]);
+        s->new_pts += (s->cycle - 1) * (judbuff[s->i3] - judbuff[s->i1])
+                    + (s->cycle + 1) * (next_pts - judbuff[s->i4]);
     }
 
-    judbuff[dj->i2] = next_pts;
-    dj->i1 = dj->i2;
-    dj->i2 = dj->i3;
-    dj->i3 = dj->i4;
-    dj->i4 = (dj->i4 + 1) % (dj->cycle + 2);
+    judbuff[s->i2] = next_pts;
+    s->i1 = s->i2;
+    s->i2 = s->i3;
+    s->i3 = s->i4;
+    s->i4 = (s->i4 + 1) % (s->cycle + 2);
 
-    frame->pts = dj->new_pts;
+    frame->pts = s->new_pts;
 
-    for (k = 0; k < dj->cycle + 2; k++)
+    for (k = 0; k < s->cycle + 2; k++)
         av_log(ctx, AV_LOG_DEBUG, "%"PRId64"\t", judbuff[k]);
     av_log(ctx, AV_LOG_DEBUG, "next=%"PRId64", new=%"PRId64"\n", next_pts, frame->pts);