From b6af56c034759b81985f8ea094e41cbd5f7fecfb Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Fri, 18 Mar 2022 11:21:52 +0100 Subject: [PATCH] avfilter/af_afftdn: do not profile noise if number of sampled blocks is 0 --- libavfilter/af_afftdn.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libavfilter/af_afftdn.c b/libavfilter/af_afftdn.c index 75895fa3d9..c66545ac2e 100644 --- a/libavfilter/af_afftdn.c +++ b/libavfilter/af_afftdn.c @@ -125,6 +125,7 @@ typedef struct AudioFFTDeNoiseContext { int channels; int sample_noise; + int sample_noise_blocks; int sample_noise_mode; float sample_rate; int buffer_length; @@ -1039,6 +1040,7 @@ static int output_frame(AVFilterLink *inlink, AVFrame *in) } s->sample_noise_mode = SAMPLE_NONE; s->sample_noise = 1; + s->sample_noise_blocks = 0; } if (s->sample_noise) { @@ -1047,6 +1049,7 @@ static int output_frame(AVFilterLink *inlink, AVFrame *in) sample_noise_block(s, dnch, s->winframe, ch); } + s->sample_noise_blocks++; } if (s->sample_noise_mode == SAMPLE_STOP) { @@ -1054,11 +1057,14 @@ static int output_frame(AVFilterLink *inlink, AVFrame *in) DeNoiseChannel *dnch = &s->dnch[ch]; double sample_noise[NB_PROFILE_BANDS]; + if (s->sample_noise_blocks <= 0) + break; finish_sample_noise(s, dnch, sample_noise); set_noise_profile(s, dnch, sample_noise); set_parameters(s, dnch, 1, 1); } s->sample_noise = 0; + s->sample_noise_blocks = 0; s->sample_noise_mode = SAMPLE_NONE; }