snapshot of https://github.com/jitsi/jitsi-meet.git @ fd1749dd28f4138aa80234fc7f311b19aaffa0e7 (2026-09-15)

react/features/audio-translation/reducer.ts

@@ -0,0 +1,94 @@
+import ReducerRegistry from '../base/redux/ReducerRegistry';
+
+import {
+    CLEAR_AUDIO_TRANSLATION,
+    CLEAR_RECEIVING_TRANSLATED_SOURCES,
+    SET_AUDIO_TRANSLATION_LANGUAGE,
+    SET_PARTICIPANT_AUDIO_TRANSLATION_LANGUAGE,
+    SET_TRANSLATION_LISTENERS,
+    UPDATE_TRANSLATED_SOURCE_SENDING
+} from './actionTypes';
+
+/**
+ * The redux state of the audio-translation feature.
+ */
+export interface IAudioTranslationState {
+
+    /**
+     * The default target language remote audio is translated into, or null when off.
+     */
+    language: string | null;
+
+    /**
+     * Per-participant target-language overrides (participantId -> language, or null to disable for that
+     * participant). An entry present here takes precedence over {@link language}; an absent entry inherits it.
+     */
+    participantLanguages: { [participantId: string]: string | null; };
+
+    /**
+     * Translated source names the bridge is currently forwarding to us (i.e. we are hearing them translated).
+     * A source follows the {@code <endpointId>-a<idx>.<lang>} convention; membership is last-write-wins.
+     */
+    receivingSources: string[];
+
+    /**
+     * Endpoint ids of the remote participants currently translating the local participant's audio, pushed by
+     * the audio-translation component. Drives the per-participant "translation enabled" badge.
+     */
+    translationListeners: string[];
+}
+
+const DEFAULT_STATE: IAudioTranslationState = {
+    language: null,
+    participantLanguages: {},
+    receivingSources: [],
+    translationListeners: []
+};
+
+ReducerRegistry.register<IAudioTranslationState>(
+    'features/audio-translation',
+    (state = DEFAULT_STATE, action): IAudioTranslationState => {
+        switch (action.type) {
+        case CLEAR_AUDIO_TRANSLATION:
+            return DEFAULT_STATE;
+        case CLEAR_RECEIVING_TRANSLATED_SOURCES:
+            return {
+                ...state,
+                receivingSources: []
+            };
+        case SET_AUDIO_TRANSLATION_LANGUAGE:
+            return {
+                ...state,
+                language: action.language
+            };
+        case SET_PARTICIPANT_AUDIO_TRANSLATION_LANGUAGE:
+            return {
+                ...state,
+                participantLanguages: {
+                    ...state.participantLanguages,
+                    [action.participantId]: action.language
+                }
+            };
+        case SET_TRANSLATION_LISTENERS:
+            return {
+                ...state,
+                translationListeners: action.ids
+            };
+        case UPDATE_TRANSLATED_SOURCE_SENDING: {
+            const has = state.receivingSources.includes(action.sourceName);
+
+            if (action.sending === has) {
+                return state;
+            }
+
+            return {
+                ...state,
+                receivingSources: action.sending
+                    ? [ ...state.receivingSources, action.sourceName ]
+                    : state.receivingSources.filter((source: string) => source !== action.sourceName)
+            };
+        }
+        default:
+            return state;
+        }
+    });