TASK 24 post-pause polish batch (creator's 8 review issues, 2026-08-15): (1) desktop/game audio volume slider + (2) mute were no-ops — the AudioMixer's gain Func seams defaulted to unity because the VM never passed them; new AudioGainProvider (Services/Audio/) wires MicMuted/MicVolume/GameMuted/GameAudioVolume into the mixer at construction, read live each mix tick, so sliders and mutes are stream-honest; the game bar also scales TRAX locally via new MusicPlayer.LocalGain (UpdateTraxLocalGain on every game volume/mute change + on load) so the creator HEARS the controls work on the music in the headphones. (3) TRAX played once then stopped — OnPlaybackStopped only looped on Position>=Length (unreliable for MediaFoundationReader); now any clean stop rewinds + replays, errors/explicit stops surface via PlaybackEnded; unused using dropped. (4+6) TRAX moved right of Socials in the footer's left cluster (centered under scenes/sources); the mic cluster is now MIC + meter + mute + volume. (5) mic source persists — LayoutStore gains a Settings key/value table (SaveMicSourceName/LoadMicSourceName); the VM saves on pick and restores before the mixer's first Start, so a restart reconnects the same vetted device (green) or reports it missing (yellow). (7) Backdrop's missing trashcan shifted the edit/eye icons right — new HiddenBoolToVisibilityConverter keeps the trash column reserved (Hidden, not Collapsed) so every source row's icons stay in fixed columns. (8) a 1px hairline with top/bottom padding separates scenes from sources in the left panel. Docs in the same commit: ai.md (gains honest + drive TRAX locally, TRAX loops, mic persistence, footer layout), TASKS.md TASK 24, HANDOFF.md shipped state, ViewModels/index.md. ONE integration test: AudioPipelineTests.Mix_HonorsProviderGains_AndGameMute_KillsTheLoopback (real mixer + provider gains through the pipe harness: scaled loopback audible, silence after mute). Build 0 warnings, 197 tests passing

2026-08-15 10:23:49 -07:00
parent 86fcd868a8
commit a0a8331569
11 changed files with 369 additions and 93 deletions
@@ -0,0 +1,33 @@
+namespace ytLive.Services.Audio;
+
+/// <summary>
+/// Supplies the live-mix gain values (mic + loopback) as Func seams for
+/// <see cref="AudioMixer"/>, sourced from the VM's volume/mute state. Read live
+/// on every mix tick so slider drags and mutes take effect immediately on the
+/// stream. Mute and zero volume can never disagree: 0 always reads as muted.
+/// </summary>
+public sealed class AudioGainProvider
+{
+    private readonly Func<bool> _micMuted;
+    private readonly Func<double> _micVolume;
+    private readonly Func<bool> _gameMuted;
+    private readonly Func<double> _gameVolume;
+
+    public AudioGainProvider(
+        Func<bool> micMuted,
+        Func<double> micVolume,
+        Func<bool> gameMuted,
+        Func<double> gameVolume)
+    {
+        _micMuted = micMuted;
+        _micVolume = micVolume;
+        _gameMuted = gameMuted;
+        _gameVolume = gameVolume;
+    }
+
+    /// <summary>Mic gain for the live mix (0 = muted).</summary>
+    public double MicGain() => _micMuted() ? 0 : _micVolume();
+
+    /// <summary>Loopback (desktop/game) gain for the live mix (0 = muted).</summary>
+    public double LoopbackGain() => _gameMuted() ? 0 : _gameVolume();
+}