1 files changed, 51 insertions, 0 deletions
diff --git a/src/audio/jittered_audio_backend.h b/src/audio/jittered_audio_backend.h
new file mode 100644
index 0000000..e0ce9d7
--- /dev/null
+++ b/src/audio/jittered_audio_backend.h
@@ -0,0 +1,51 @@
+// This file is part of the 64k demo project.
+// It implements a test backend that simulates jittered audio consumption.
+// Useful for stress-testing ring buffer under realistic timing conditions.
+
+#pragma once
+
+#if !defined(STRIP_ALL)
+
+#include "audio_backend.h"
+#include <atomic>
+#include <thread>
+
+// Simulates a real audio device with timing jitter and variable chunk sizes
+class JitteredAudioBackend : public AudioBackend {
+ public:
+  JitteredAudioBackend();
+  ~JitteredAudioBackend() override;
+
+  void init() override;
+  void start() override;
+  void shutdown() override;
+
+  // Control simulation
+  void set_jitter_amount(float jitter_ms);  // Random jitter in ms (default: 5ms)
+  void set_base_interval(float interval_ms);  // Base interval between reads (default: 10ms)
+  void set_chunk_size_range(int min_frames, int max_frames);  // Variable chunk sizes
+
+  // Query state
+  int get_total_frames_consumed() const { return total_frames_consumed_.load(); }
+  int get_underrun_count() const { return underrun_count_.load(); }
+  bool is_running() const { return running_.load(); }
+
+ private:
+  void audio_thread_loop();
+
+  std::thread audio_thread_;
+  std::atomic<bool> running_;
+  std::atomic<bool> should_stop_;
+
+  // Configuration
+  float jitter_ms_;
+  float base_interval_ms_;
+  int min_chunk_frames_;
+  int max_chunk_frames_;
+
+  // Statistics
+  std::atomic<int> total_frames_consumed_;
+  std::atomic<int> underrun_count_;  // How many times buffer was empty
+};
+
+#endif /* !defined(STRIP_ALL) */