36 lines
1.3 KiB
C#
36 lines
1.3 KiB
C#
namespace ytLive.Services.Audio;
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/// <summary>
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/// Supplies the live-mix gain values (mic + loopback) as Func seams for
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/// <see cref="AudioMixer"/>, sourced from the VM's volume/mute state. Read live
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/// on every mix tick so slider drags and mutes take effect immediately on the
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/// stream. Mute and zero volume can never disagree: 0 always reads as muted.
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/// </summary>
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public sealed class AudioGainProvider
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{
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private readonly Func<bool> _micMuted;
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private readonly Func<double> _micVolume;
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private readonly Func<bool> _gameMuted;
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private readonly Func<double> _gameVolume;
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public AudioGainProvider(
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Func<bool> micMuted,
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Func<double> micVolume,
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Func<bool> gameMuted,
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Func<double> gameVolume)
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{
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_micMuted = micMuted;
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_micVolume = micVolume;
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_gameMuted = gameMuted;
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_gameVolume = gameVolume;
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}
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/// <summary>Mic gain for the live mix (0 = muted).</summary>
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public double MicGain() => _micMuted() ? 0 : _micVolume();
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/// <summary>Loopback (desktop/game) gain for the live mix (0 = muted, 1 = unity).
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/// Unity because the slider now drives system volume via PushSystemVolume,
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/// so the WASAPI loopback signal is already scaled by the user's volume choice.</summary>
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public double LoopbackGain() => _gameMuted() ? 0 : 1.0;
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}
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