From fd9d014a825386e628886046ee8a9e4dc3495fdf Mon Sep 17 00:00:00 2001
From: Isaac Connor <isaac@zoneminder.com>
Date: Tue, 29 Oct 2024 10:35:08 -0400
Subject: [PATCH] Fix returning -1 to an unsigned int return value in
 getLastRead/WriteIndex

---
 src/zm_monitor.cpp | 4 ++--
 src/zm_monitor.h   | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/zm_monitor.cpp b/src/zm_monitor.cpp
index 03d0b00bdb..4f52ad34ff 100644
--- a/src/zm_monitor.cpp
+++ b/src/zm_monitor.cpp
@@ -1378,11 +1378,11 @@ SystemTimePoint Monitor::GetTimestamp(int index) const {
   return {};
 }
 
-unsigned int Monitor::GetLastReadIndex() const {
+int Monitor::GetLastReadIndex() const {
   return ( shared_data->last_read_index != image_buffer_count ? shared_data->last_read_index : -1 );
 }
 
-unsigned int Monitor::GetLastWriteIndex() const {
+int Monitor::GetLastWriteIndex() const {
   return ( shared_data->last_write_index != image_buffer_count ? shared_data->last_write_index : -1 );
 }
 
diff --git a/src/zm_monitor.h b/src/zm_monitor.h
index 3e671109f6..aa7c0c2a91 100644
--- a/src/zm_monitor.h
+++ b/src/zm_monitor.h
@@ -840,8 +840,8 @@ class Monitor : public std::enable_shared_from_this<Monitor> {
   unsigned int GetCaptureMaxFPS() const { return capture_max_fps; }
   Microseconds GetCaptureDelay() const { return capture_delay; }
   Microseconds GetAlarmCaptureDelay() const { return alarm_capture_delay; }
-  unsigned int GetLastReadIndex() const;
-  unsigned int GetLastWriteIndex() const;
+  int GetLastReadIndex() const;
+  int GetLastWriteIndex() const;
   uint64_t GetLastEventId() const;
   double GetFPS() const;
   void UpdateFPS();