avfilter/avf_showspectrum: do not use ff_outlink_get_status() on inlink

libavfilter/avf_showspectrum.c

@@ -109,6 +109,7 @@ typedef struct ShowSpectrumContext {
     float dmin, dmax;
     uint64_t samples;
     int (*plot_channel)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
+    int eof;
 
     float opacity_factor;
 
@@ -1543,8 +1544,7 @@ static int plot_spectrum_column(AVFilterLink *inlink, AVFrame *insamples)
 
     if (!s->single_pic && (s->sliding != FULLFRAME || s->xpos == 0)) {
         if (s->old_pts < outpicref->pts || s->sliding == FULLFRAME ||
-            (ff_outlink_get_status(inlink) == AVERROR_EOF &&
-             ff_inlink_queued_samples(inlink) <= s->hop_size)) {
+            (s->eof && ff_inlink_queued_samples(inlink) <= s->hop_size)) {
             AVFrame *clone;
 
             if (s->legend) {
@@ -1600,7 +1600,7 @@ static int activate(AVFilterContext *ctx)
 
     FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
 
-    if (s->outpicref) {
+    if (s->outpicref && ff_inlink_queued_samples(inlink) > 0) {
         AVFrame *fin;
 
         ret = ff_inlink_consume_samples(inlink, s->hop_size, s->hop_size, &fin);
@@ -1627,8 +1627,7 @@ static int activate(AVFilterContext *ctx)
         }
     }
 
-    if (ff_outlink_get_status(inlink) == AVERROR_EOF &&
-        s->sliding == FULLFRAME &&
+    if (s->eof && s->sliding == FULLFRAME &&
         s->xpos > 0 && s->outpicref) {
 
         if (s->orientation == VERTICAL) {
@@ -1656,11 +1655,15 @@ static int activate(AVFilterContext *ctx)
         return 0;
     }
 
-    if (ff_inlink_acknowledge_status(inlink, &status, &pts)) {
-        if (status == AVERROR_EOF) {
-            ff_outlink_set_status(outlink, status, s->pts);
-            return 0;
-        }
+    if (!s->eof && ff_inlink_acknowledge_status(inlink, &status, &pts)) {
+        s->eof = status == AVERROR_EOF;
+        ff_filter_set_ready(ctx, 100);
+        return 0;
+    }
+
+    if (s->eof) {
+        ff_outlink_set_status(outlink, AVERROR_EOF, s->pts);
+        return 0;
     }
 
     if (ff_inlink_queued_samples(inlink) >= s->hop_size) {