From 49eda27c6e7ad699d8f09c8ba60b9507946d1b1c Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Sun, 3 Jun 2018 12:43:43 +0200
Subject: [PATCH] avfilter/avf_showspectrum: also show sample rate and channel
layout
Signed-off-by: Paul B Mahol <onemda@gmail.com>
---
libavfilter/avf_showspectrum.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/libavfilter/avf_showspectrum.c b/libavfilter/avf_showspectrum.c
index bf9f3c5b913..04fcc8d7563 100644
--- a/libavfilter/avf_showspectrum.c
+++ b/libavfilter/avf_showspectrum.c
@@ -1082,9 +1082,19 @@ static int showspectrumpic_request_frame(AVFilterLink *outlink)
if (s->legend) {
int multi = (s->mode == SEPARATE && s->color_mode == CHANNEL);
float spp = samples / (float)sz;
+ char *text;
uint8_t *dst;
+ char chlayout_str[128];
+
+ av_get_channel_layout_string(chlayout_str, sizeof(chlayout_str), inlink->channels,
+ inlink->channel_layout);
+
+ text = av_asprintf("%d Hz | %s", inlink->sample_rate, chlayout_str);
drawtext(s->outpicref, 2, outlink->h - 10, "CREATED BY LIBAVFILTER", 0);
+ drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, outlink->h - 10, text, 0);
+
+ av_freep(&text);
dst = s->outpicref->data[0] + (s->start_y - 1) * s->outpicref->linesize[0] + s->start_x - 1;
for (x = 0; x < s->w + 1; x++)
--
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