From 072b62b6edf6864fd75a1f8d721577350b32c58f Mon Sep 17 00:00:00 2001
From: Alex P <dtk077@gmail.com>
Date: Thu, 28 Aug 2025 00:35:51 +0000
Subject: [PATCH] feat(audio): add latency metrics collection for input and
 output

Add granular metrics collection for audio processing latency in both input and output paths. This enables better performance monitoring through histograms.

Also update build tags to include ARM platform and rename UI label for clarity.
---
 internal/audio/input.go                     | 12 ++++++++++++
 internal/audio/output_ipc_manager.go        | 10 ++++++++++
 internal/audio/validation.go                |  4 ++--
 ui/src/components/AudioMetricsDashboard.tsx |  2 +-
 4 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/internal/audio/input.go b/internal/audio/input.go
index fc6f5c61..a177e42c 100644
--- a/internal/audio/input.go
+++ b/internal/audio/input.go
@@ -110,6 +110,12 @@ func (aim *AudioInputManager) WriteOpusFrame(frame []byte) error {
 	atomic.AddInt64(&aim.framesSent, 1)
 	aim.recordFrameProcessed(len(frame))
 	aim.updateLatency(processingTime)
+
+	// Record latency to granular metrics collector for histogram
+	if granularCollector := GetGranularMetricsCollector(); granularCollector != nil {
+		granularCollector.RecordInputLatency(processingTime)
+	}
+
 	return nil
 }
 
@@ -145,6 +151,12 @@ func (aim *AudioInputManager) WriteOpusFrameZeroCopy(frame *ZeroCopyAudioFrame)
 	atomic.AddInt64(&aim.framesSent, 1)
 	aim.recordFrameProcessed(frame.Length())
 	aim.updateLatency(processingTime)
+
+	// Record latency to granular metrics collector for histogram
+	if granularCollector := GetGranularMetricsCollector(); granularCollector != nil {
+		granularCollector.RecordInputLatency(processingTime)
+	}
+
 	return nil
 }
 
diff --git a/internal/audio/output_ipc_manager.go b/internal/audio/output_ipc_manager.go
index 2c64c918..1a751122 100644
--- a/internal/audio/output_ipc_manager.go
+++ b/internal/audio/output_ipc_manager.go
@@ -103,6 +103,11 @@ func (aom *AudioOutputIPCManager) WriteOpusFrame(frame *ZeroCopyAudioFrame) erro
 	aom.recordFrameProcessed(frame.Length())
 	aom.updateLatency(processingTime)
 
+	// Record latency to granular metrics collector for histogram
+	if granularCollector := GetGranularMetricsCollector(); granularCollector != nil {
+		granularCollector.RecordOutputLatency(processingTime)
+	}
+
 	return nil
 }
 
@@ -132,6 +137,11 @@ func (aom *AudioOutputIPCManager) WriteOpusFrameZeroCopy(frame *ZeroCopyAudioFra
 	aom.recordFrameProcessed(len(frameData))
 	aom.updateLatency(processingTime)
 
+	// Record latency to granular metrics collector for histogram
+	if granularCollector := GetGranularMetricsCollector(); granularCollector != nil {
+		granularCollector.RecordOutputLatency(processingTime)
+	}
+
 	return nil
 }
 
diff --git a/internal/audio/validation.go b/internal/audio/validation.go
index 388d59d8..a84595d5 100644
--- a/internal/audio/validation.go
+++ b/internal/audio/validation.go
@@ -1,5 +1,5 @@
-//go:build cgo
-// +build cgo
+//go:build cgo || arm
+// +build cgo arm
 
 package audio
 
diff --git a/ui/src/components/AudioMetricsDashboard.tsx b/ui/src/components/AudioMetricsDashboard.tsx
index c8123dc2..538fdcd9 100644
--- a/ui/src/components/AudioMetricsDashboard.tsx
+++ b/ui/src/components/AudioMetricsDashboard.tsx
@@ -478,7 +478,7 @@ export default function AudioMetricsDashboard() {
             <div className="mb-2 flex items-center gap-2">
               <MdMic className="h-4 w-4 text-green-600 dark:text-green-400" />
               <span className="font-medium text-slate-900 dark:text-slate-100">
-                Microphone Input Config
+                Audio Input Config
               </span>
             </div>
             <div className="space-y-2 text-sm">