[FFmpeg-cvslog] avfilter/af_astats: Only print header lines when values are to be printed

[Tobias Rapp]

ffmpeg | branch: master | Tobias Rapp <t.rapp at noa-archive.com> | Thu Mar 25 17:26:37 2021 +0100| [ca56299fb3f71badee457c4c36a893f626c4a274] | committer: Tobias Rapp

avfilter/af_astats: Only print header lines when values are to be printed

Avoids empty "Channel" or "Overall" header lines added to log output
when measurement is restricted to one scope using
"measure_perchannel=none" or "measure_overall=none".

Signed-off-by: Tobias Rapp <t.rapp at noa-archive.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ca56299fb3f71badee457c4c36a893f626c4a274
---

 libavfilter/af_astats.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavfilter/af_astats.c b/libavfilter/af_astats.c
index 51a01aba2f..23a5785d5a 100644
--- a/libavfilter/af_astats.c
+++ b/libavfilter/af_astats.c
@@ -705,7 +705,8 @@ static void print_stats(AVFilterContext *ctx)
         if (fabs(p->sigma_x) > fabs(max_sigma_x))
             max_sigma_x = p->sigma_x;
 
-        av_log(ctx, AV_LOG_INFO, "Channel: %d\n", c + 1);
+        if (s->measure_perchannel != MEASURE_NONE)
+            av_log(ctx, AV_LOG_INFO, "Channel: %d\n", c + 1);
         if (s->measure_perchannel & MEASURE_DC_OFFSET)
             av_log(ctx, AV_LOG_INFO, "DC offset: %f\n", p->sigma_x / p->nb_samples);
         if (s->measure_perchannel & MEASURE_MIN_LEVEL)
@@ -757,7 +758,8 @@ static void print_stats(AVFilterContext *ctx)
             av_log(ctx, AV_LOG_INFO, "Number of denormals: %"PRId64"\n", p->nb_denormals);
     }
 
-    av_log(ctx, AV_LOG_INFO, "Overall\n");
+    if (s->measure_overall != MEASURE_NONE)
+        av_log(ctx, AV_LOG_INFO, "Overall\n");
     if (s->measure_overall & MEASURE_DC_OFFSET)
         av_log(ctx, AV_LOG_INFO, "DC offset: %f\n", max_sigma_x / (nb_samples / s->nb_channels));
     if (s->measure_overall & MEASURE_MIN_LEVEL)