ash/WebStudio
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Fix fading to silent, and PFL metering.

Browse source
This commit is contained in:
Matthew Stratford 2021-01-24 21:43:51 +00:00
parent ed8e27547f
commit 9319eb49b7
2 changed files with 15 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
src/mixer/audio.ts
View file

@ -8,6 +8,7 @@ import NewsEndCountdown from "../assets/audio/NewsEndCountdown.wav";
import NewsIntro from "../assets/audio/NewsIntro.wav";
import StereoAnalyserNode from "stereo-analyser-node";
import { DEFAULT_TRIM_DB, OFF_LEVEL_DB } from "./state";
interface PlayerEvents {
loadComplete: (duration: number) => void;
@ -164,8 +165,10 @@ class Player extends ((PlayerEmitter as unknown) as { new (): EventEmitter }) {
}
_applyVolume() {
const level = this.volume + this.trim;
const linear = Math.pow(10, level / 20);
const log = this.volume + this.trim;
// If we're down at the "off level", pure mute it, else, do the linear conversion.
let linear = this.volume === OFF_LEVEL_DB ? 0 : Math.pow(10, log / 20);
// Actually adjust the wavesurfer gain node gain instead, so we can tap off analyser for PFL.
this.wavesurfer.setVolume(1);
@ -461,7 +464,7 @@ export class AudioEngine extends ((EngineEmitter as unknown) as {
this.newsEndCountdownNode.connect(this.audioContext.destination);
// Send the headphones feed to the headphones.
const db = -12; // DB gain on headphones (-6 to match default trim)
const db = DEFAULT_TRIM_DB; // DB gain on headphones (match default trim)
this.headphonesNode.gain.value = Math.pow(10, db / 20);
this.headphonesNode.connect(this.audioContext.destination);
this.headphonesNode.connect(this.pflAnalyser);

15
src/mixer/state.ts
View file

@ -28,8 +28,11 @@ type VolumePresetEnum = "off" | "bed" | "full";
type MicVolumePresetEnum = "off" | "full";
export type MicErrorEnum = "NO_PERMISSION" | "NOT_SECURE_CONTEXT" | "UNKNOWN";
const defaultTrimDB = -6; // The default trim applied to channel players.
export const DEFAULT_TRIM_DB = -6; // The default trim applied to channel players.
export const OFF_LEVEL_DB = -40;
export const BED_LEVEL_DB = -13;
export const FULL_LEVEL_DB = 0;
interface PlayerState {
loadedItem: PlanItem | Track | AuxItem | null;
loading: number;
@ -72,7 +75,7 @@ const BasePlayerState: PlayerState = {
volumeEnum: "full",
gain: 0,
micAutoDuck: false,
trim: defaultTrimDB,
trim: DEFAULT_TRIM_DB,
pfl: false,
timeCurrent: 0,
timeRemaining: 0,
@ -125,7 +128,7 @@ const mixerState = createSlice({
if (action.payload.customOutput) {
state.players[action.payload.player].trim = 0;
} else if (action.payload.resetTrim) {
state.players[action.payload.player].trim = defaultTrimDB;
state.players[action.payload.player].trim = DEFAULT_TRIM_DB;
}
},
itemLoadPercentage(
@ -702,15 +705,15 @@ export const setVolume = (
let uiLevel: number;
switch (level) {
case "off":
volume = -40;
volume = OFF_LEVEL_DB; // The sweet spot for getting below the silence rounding in audio.ts -> _applyVolume()
uiLevel = 0;
break;
case "bed":
volume = -13;
volume = BED_LEVEL_DB;
uiLevel = 0.5;
break;
case "full":
volume = 0;
volume = FULL_LEVEL_DB;
uiLevel = 1;
break;
}