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feat: recording capsule (#38)

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This commit is contained in:
Owen Gretzinger
2025-07-23 23:15:57 -04:00
committed by GitHub
parent 7f37b00e39
commit 7ddec9c193
9 changed files with 249 additions and 6 deletions
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meetingnotes/Managers/AudioManager.swift
+29 -4
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@@ -12,6 +12,8 @@ class AudioManager: NSObject, ObservableObject {
@Published var transcriptChunks: [TranscriptChunk] = []
@Published var isRecording = false
@Published var errorMessage: String?
@Published var micAudioLevel: Float = 0.0
@Published var systemAudioLevel: Float = 0.0
private var audioEngine = AVAudioEngine()
private var micSocketTask: URLSessionWebSocketTask?
@@ -155,15 +157,17 @@ class AudioManager: NSObject, ObservableObject {
return
}
// Debug mic RMS
// Calculate audio level for visual indicator
if let ch = buffer.floatChannelData?[0] {
let frameCount = Int(buffer.frameLength)
let samples = UnsafeBufferPointer(start: ch, count: frameCount)
let rms = sqrt(samples.map { $0 * $0 }.reduce(0, +) / Float(frameCount))
print("🎤 Mic RMS: \(rms)")
// Optional: Check for prolonged silence (e.g., RMS < threshold for multiple buffers)
// But for now, just process
// Update the published audio level on main thread
DispatchQueue.main.async {
self.micAudioLevel = rms
AudioLevelManager.shared.updateMicLevel(rms)
}
}
self.processAudioBuffer(buffer, converter: converter, targetFormat: targetFormat, source: .mic)
@@ -249,6 +253,7 @@ class AudioManager: NSObject, ObservableObject {
DispatchQueue.main.async {
self.isRecording = true
AudioLevelManager.shared.updateRecordingState(true)
}
} catch {
let errorMsg = "Failed to start system audio tap IO: \(error.localizedDescription)"
@@ -304,6 +309,19 @@ class AudioManager: NSObject, ObservableObject {
return
}
// Calculate audio level for visual indicator
if let ch = buffer.floatChannelData?[0] {
let frameCount = Int(buffer.frameLength)
let samples = UnsafeBufferPointer(start: ch, count: frameCount)
let rms = sqrt(samples.map { $0 * $0 }.reduce(0, +) / Float(frameCount))
// Update the published audio level on main thread
DispatchQueue.main.async {
self.systemAudioLevel = rms
AudioLevelManager.shared.updateSystemLevel(rms)
}
}
self.processAudioBuffer(buffer, converter: converter, targetFormat: targetFormat, source: .system)
} invalidationHandler: { [weak self] _ in
@@ -317,8 +335,15 @@ class AudioManager: NSObject, ObservableObject {
func stopRecording() {
// Immediately mark as not recording to prevent stale callbacks
self.isRecording = false
AudioLevelManager.shared.updateRecordingState(false)
print("Stopping recording...")
// Reset audio levels
micAudioLevel = 0.0
systemAudioLevel = 0.0
AudioLevelManager.shared.updateMicLevel(0.0)
AudioLevelManager.shared.updateSystemLevel(0.0)
// Stop system audio capture
if isTapActive {
self.processTap?.invalidate()