gramps
a54149bd7c
Creator: "why is there no meter for when trax is playing?" Routing answer: TRAX rides the desktop loopback, so it already moved the GAME ladder — there was no separate TRAX signal in the mix. But that ladder cannot answer the question a deaf creator actually has: "is the music producing sound at all?" The play glyph cannot either — an open file with a dead decoder still reports Playing. So the player now measures its own output: \`MusicPlayer\` wraps the volume stage in an NAudio \`MeteringSampleProvider\` and exposes \`Level\`; \`ITraxPlayer.Level\` keeps the fake honest. The VM maps it through the same display scale (\`TraxMeterFraction\`), zeroed when not playing, and the TRAX bay carries a 24-segment ladder above its fader. This reverses my earlier "no ladder, nothing honest to show" — the honest thing arrived with a real measurement. TraxBayTests flipped accordingly (it now asserts the ladder AND its source).
45 lines
2.2 KiB
C#
45 lines
2.2 KiB
C#
using Xunit;
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using ytLive.Helpers;
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using ytLive.Services.Audio;
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using ytLive.ViewModels;
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namespace ytLive.Tests;
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/// <summary>The TRAX bay shows the track, plays/pauses it, and carries a level — but no meter:
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/// nothing measures the bed, and a decorative ladder would be a lie. Its fader moves a gain the
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/// player actually applies, separate from the desktop-mute follow.
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/// </summary>
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public class TraxBayTests
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{
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[Fact]
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public void The_trax_bay_binds_the_track_level_and_play_state_without_inventing_a_meter()
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{
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var dock = SourceAssert.Text("Controls", "AudioDock.xaml");
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Assert.Contains("Text=\"{Binding TraxTrackLabel}\"", dock);
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Assert.Contains("Value=\"{Binding TraxVolumeDb, Mode=TwoWay}\"", dock);
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Assert.Contains("Text=\"{Binding TraxVolumeDbLabel}\"", dock);
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Assert.Contains("Binding=\"{Binding IsMusicPlaying}\" Value=\"True\"", dock);
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Assert.Contains("Click=\"TraxPlayPause_Click\"", dock);
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// The bay DOES carry a ladder now — the player measures its own output, so "is music making
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// sound" is answerable without hearing it (a play glyph cannot answer that).
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var traxBay = dock[dock.IndexOf("Text=\"TRAX\"", System.StringComparison.Ordinal)
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..dock.IndexOf("Text=\"LIP-SYNC\"", System.StringComparison.Ordinal)];
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Assert.Contains("TraxTrackLabel", traxBay);
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Assert.Contains("SegmentMeter", traxBay);
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Assert.Contains("TraxMeterFraction", traxBay);
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foreach (var name in new[] { "TraxVolumeDb", "TraxVolumeDbLabel", "TraxTrackLabel", "IsTraxDucking", "TraxMeterFraction" })
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Assert.NotNull(typeof(MainViewModel).GetProperty(name));
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// The player gained a real user level, separate from the mute-follow LocalGain.
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Assert.NotNull(typeof(ITraxPlayer).GetProperty("UserGain"));
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Assert.NotNull(typeof(ITraxPlayer).GetProperty("Level"));
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Assert.NotNull(typeof(MusicPlayer).GetProperty("UserGain"));
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// Unity means the bed's design level, and the fader's scale is the same one as the others.
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Assert.Equal(0, GainDb.ToDb(1f), 6);
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Assert.Contains("∞", GainDb.Label(GainDb.FloorDb)); // true silence, not "-60.0"
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}
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}
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