From 719738ddb05399ad879ae98f0d6f3a3a3a424176 Mon Sep 17 00:00:00 2001
From: Ramyak Mehra <ramyak@dyte.io>
Date: Sun, 13 Oct 2024 17:24:57 +0530
Subject: [PATCH] feat: add marker bit when packetizing opus.

incase of silence opus rtp payload sets the marker bit after a talking spurt.
usually the data in silence pacekts are empty, just use 1-2 bytes for header.

fixes #125
---
 src/packet/opus.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/packet/opus.rs b/src/packet/opus.rs
index 365da501..29a37c94 100644
--- a/src/packet/opus.rs
+++ b/src/packet/opus.rs
@@ -23,8 +23,12 @@ impl Packetizer for OpusPacketizer {
     }
 
     fn is_marker(&mut self, data: &[u8], previous: Option<&[u8]>, last: bool) -> bool {
-        // TODO: dtx
-        false
+        match previous {
+            // silence packets are usually empty with 1-2 bytes header
+            Some(previous) => previous.len() < 3 && data.len() >= 3,
+            // first packet can always be considered as start of talk spurt
+            None => true,
+        }
     }
 }