From 76eeaffbb2c35453dd86f4d36a5bc0aedbc54dad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Mon, 28 Nov 2022 18:44:04 +0200
Subject: [PATCH] textwrap: Don't panic on empty buffers

Simply don't calculate with any duration per word for this buffer.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/990>
---
 text/wrap/src/gsttextwrap/imp.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/text/wrap/src/gsttextwrap/imp.rs b/text/wrap/src/gsttextwrap/imp.rs
index 1820a92c..9578e582 100644
--- a/text/wrap/src/gsttextwrap/imp.rs
+++ b/text/wrap/src/gsttextwrap/imp.rs
@@ -176,8 +176,8 @@ impl TextWrap {
                 state.end_ts = None;
             }
 
-            let duration_per_word: gst::ClockTime =
-                duration / data.split_whitespace().count() as u64;
+            let num_words = data.split_whitespace().count() as u64;
+            let duration_per_word = (num_words != 0).then(|| duration / num_words);
 
             if state.start_ts.is_none() {
                 state.start_ts = buffer.pts();