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* save * rememberTranscriptions hooks * Use derivedstateof for flow creation * fix * spotless
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112
...s/src/main/java/io/livekit/android/compose/state/transcriptions/RememberTranscriptions.kt
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| /* | ||
| * Copyright 2024 LiveKit, Inc. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
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| package io.livekit.android.compose.state.transcriptions | ||
|
|
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| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.LaunchedEffect | ||
| import androidx.compose.runtime.derivedStateOf | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableStateMapOf | ||
| import androidx.compose.runtime.remember | ||
| import io.livekit.android.annotations.Beta | ||
| import io.livekit.android.compose.flow.rememberEventSelector | ||
| import io.livekit.android.compose.local.requireParticipant | ||
| import io.livekit.android.compose.local.requireRoom | ||
| import io.livekit.android.compose.types.TrackReference | ||
| import io.livekit.android.events.ParticipantEvent | ||
| import io.livekit.android.events.RoomEvent | ||
| import io.livekit.android.events.TrackPublicationEvent | ||
| import io.livekit.android.room.Room | ||
| import io.livekit.android.room.participant.Participant | ||
| import io.livekit.android.room.types.TranscriptionSegment | ||
| import io.livekit.android.room.types.mergeNewSegments | ||
| import kotlinx.coroutines.flow.Flow | ||
| import kotlinx.coroutines.flow.map | ||
|
|
||
| /** | ||
| * Collect all the transcriptions for the room. | ||
| * | ||
| * @return Returns the collected transcriptions, ordered by [TranscriptionSegment.firstReceivedTime]. | ||
| */ | ||
| @Beta | ||
| @Composable | ||
| fun rememberTranscriptions(passedRoom: Room? = null): List<TranscriptionSegment> { | ||
| val room = requireRoom(passedRoom) | ||
| val events = rememberEventSelector<RoomEvent.TranscriptionReceived>(room) | ||
| val flow by remember(events) { | ||
| derivedStateOf { | ||
| events.map { it.transcriptionSegments } | ||
| } | ||
| } | ||
|
|
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| return rememberTranscriptionsImpl(transcriptionsFlow = flow) | ||
| } | ||
|
|
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| /** | ||
| * Collect all the transcriptions for a track reference. | ||
| * | ||
| * @return Returns the collected transcriptions, ordered by [TranscriptionSegment.firstReceivedTime]. | ||
| */ | ||
| @Beta | ||
| @Composable | ||
| fun rememberTrackTranscriptions(trackReference: TrackReference): List<TranscriptionSegment> { | ||
| val publication = trackReference.publication ?: return emptyList() | ||
| val events = rememberEventSelector<TrackPublicationEvent.TranscriptionReceived>(publication) | ||
| val flow by remember(events) { | ||
| derivedStateOf { | ||
| events.map { it.transcriptions } | ||
| } | ||
| } | ||
|
|
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| return rememberTranscriptionsImpl(transcriptionsFlow = flow) | ||
| } | ||
|
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| /** | ||
| * Collect all the transcriptions for a participant. | ||
| * | ||
| * @return Returns the collected transcriptions, ordered by [TranscriptionSegment.firstReceivedTime]. | ||
| */ | ||
| @Beta | ||
| @Composable | ||
| fun rememberParticipantTranscriptions(passedParticipant: Participant? = null): List<TranscriptionSegment> { | ||
| val participant = requireParticipant(passedParticipant) | ||
| val events = rememberEventSelector<ParticipantEvent.TranscriptionReceived>(participant) | ||
| val flow by remember(events) { | ||
| derivedStateOf { | ||
| events.map { it.transcriptions } | ||
| } | ||
| } | ||
|
|
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| return rememberTranscriptionsImpl(transcriptionsFlow = flow) | ||
| } | ||
|
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| @Composable | ||
| internal fun rememberTranscriptionsImpl(transcriptionsFlow: Flow<List<TranscriptionSegment>>): List<TranscriptionSegment> { | ||
| val segments = remember(transcriptionsFlow) { mutableStateMapOf<String, TranscriptionSegment>() } | ||
| val orderedSegments = remember(segments) { | ||
| derivedStateOf { | ||
| segments.values.sortedBy { segment -> segment.firstReceivedTime } | ||
| } | ||
| } | ||
| LaunchedEffect(transcriptionsFlow) { | ||
| transcriptionsFlow.collect { | ||
| segments.mergeNewSegments(it) | ||
| } | ||
| } | ||
|
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| return orderedSegments.value | ||
| } |
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