From 9dfe97d405e219a1420aa64f18a775138f2a47ee Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Wed, 24 Jan 2024 19:04:24 -0600
Subject: [PATCH] Send the frame number in the encrypted video header

---
 src/stream.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/stream.cpp b/src/stream.cpp
index 544d0dce..eefccdc7 100644
--- a/src/stream.cpp
+++ b/src/stream.cpp
@@ -128,7 +128,7 @@ namespace stream {
     }
 
     std::uint8_t iv[12];  // 12-byte IV is ideal for AES-GCM
-    std::uint32_t unused;
+    std::uint32_t frameNumber;
     std::uint8_t tag[16];
   };
 
@@ -1419,7 +1419,7 @@ namespace stream {
 
               // Encrypt the target buffer in place
               auto *prefix = (video_packet_enc_prefix_t *) shards.prefix(x);
-              prefix->unused = 0;
+              prefix->frameNumber = packet->frame_index();
               std::copy(std::begin(iv), std::end(iv), prefix->iv);
               session->video.cipher->encrypt(std::string_view { (char *) inspect, (size_t) blocksize }, prefix->tag, &iv);
             }