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Merge pull request #81 from android/audio-comms
Refactor audio sample for comms devices only
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201 changes: 201 additions & 0 deletions
201
...nectivity/audio/src/main/java/com/example/platform/connectivity/audio/AudioCommsSample.kt
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| /* | ||
| * Copyright 2023 The Android Open Source Project | ||
| * | ||
| * 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 | ||
| * | ||
| * https://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. | ||
| */ | ||
|
|
||
| package com.example.platform.connectivity.audio | ||
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|
||
| import android.Manifest | ||
| import android.media.AudioDeviceInfo | ||
| import android.os.Build | ||
| import androidx.annotation.RequiresApi | ||
| import androidx.annotation.RequiresPermission | ||
| import androidx.compose.animation.AnimatedContent | ||
| import androidx.compose.animation.ExperimentalAnimationApi | ||
| import androidx.compose.foundation.ExperimentalFoundationApi | ||
| import androidx.compose.foundation.background | ||
| import androidx.compose.foundation.clickable | ||
| import androidx.compose.foundation.layout.Column | ||
| import androidx.compose.foundation.layout.fillMaxSize | ||
| import androidx.compose.foundation.layout.fillMaxWidth | ||
| import androidx.compose.foundation.layout.padding | ||
| import androidx.compose.foundation.lazy.LazyColumn | ||
| import androidx.compose.foundation.lazy.items | ||
| import androidx.compose.material3.CircularProgressIndicator | ||
| import androidx.compose.material3.ListItem | ||
| import androidx.compose.material3.ListItemDefaults | ||
| import androidx.compose.material3.MaterialTheme | ||
| import androidx.compose.material3.Text | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.LaunchedEffect | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.rememberCoroutineScope | ||
| import androidx.compose.runtime.setValue | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.graphics.Color | ||
| import androidx.compose.ui.text.TextStyle | ||
| import androidx.compose.ui.unit.dp | ||
| import com.example.platform.base.PermissionBox | ||
| import com.google.android.catalog.framework.annotations.Sample | ||
| import kotlinx.coroutines.Dispatchers | ||
| import kotlinx.coroutines.launch | ||
|
|
||
|
|
||
| @Sample( | ||
| name = "Communication Audio Manager Sample", | ||
| description = "This sample shows how to use audio manager to for Communication application that self-manage the call.", | ||
| documentation = "https://developer.android.com/guide/topics/media-apps/media-apps-overview", | ||
| tags = ["audio"], | ||
| ) | ||
| @RequiresApi(Build.VERSION_CODES.S) | ||
| @RequiresPermission(Manifest.permission.RECORD_AUDIO) | ||
| @Composable | ||
| fun AudioCommsSample() { | ||
| // The record permission is only needed for looping the audio not for the AudioManager | ||
| PermissionBox(permission = Manifest.permission.RECORD_AUDIO) { | ||
| AudioCommsScreen() | ||
| } | ||
| } | ||
|
|
||
| @OptIn(ExperimentalFoundationApi::class, ExperimentalAnimationApi::class) | ||
| @RequiresPermission(Manifest.permission.RECORD_AUDIO) | ||
| @RequiresApi(Build.VERSION_CODES.S) | ||
| @Composable | ||
| private fun AudioCommsScreen() { | ||
| val scope = rememberCoroutineScope() | ||
|
|
||
| // Get the current state of the communication audio devices. Check [AudioDeviceState]. | ||
| val state = rememberAudioDeviceState() | ||
| val availableDevices = remember(state.availableDevices, state.activeDevice) { | ||
| // Remove the active device from our list | ||
| state.availableDevices.filter { it.id != state.activeDevice?.id } | ||
| } | ||
| var audioIssue by remember { | ||
| mutableStateOf("") | ||
| } | ||
|
|
||
| // Only for testing purposes: open an audio loop that takes the active audio device, records the | ||
| // audio and loops it back with a small delay. | ||
| LaunchedEffect(Unit) { | ||
| try { | ||
| AudioLoopSource.openAudioLoop() | ||
| } catch (e: Exception) { | ||
| audioIssue = e.message ?: "Unknown error with audio loop" | ||
| } | ||
| } | ||
|
|
||
| LazyColumn( | ||
| Modifier | ||
| .fillMaxSize() | ||
| .padding(vertical = 16.dp), | ||
| ) { | ||
| stickyHeader { | ||
| ActiveDeviceItem(state.activeDevice) { | ||
| scope.launch { | ||
| // On click switch back to default device | ||
| state.clearSelectedDevice() | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if (audioIssue.isNotBlank()) { | ||
| item { | ||
| Text( | ||
| text = audioIssue, | ||
| modifier = Modifier.background(MaterialTheme.colorScheme.errorContainer), | ||
| style = TextStyle(color = MaterialTheme.colorScheme.error), | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| items(items = availableDevices, key = { it.id }) { | ||
| var isLoading by remember { | ||
| mutableStateOf(false) | ||
| } | ||
| AudioDeviceItem(deviceInfo = it, isLoading = isLoading) { | ||
| isLoading = true | ||
| scope.launch(Dispatchers.IO) { | ||
| // On item selected, switch and wait to the new device | ||
| audioIssue = if (state.selectDevice(it)) { | ||
| "" | ||
| } else { | ||
| "Error while selecting device" | ||
| } | ||
| isLoading = false | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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||
| @RequiresApi(Build.VERSION_CODES.P) | ||
| @Composable | ||
| @OptIn(ExperimentalAnimationApi::class) | ||
| private fun ActiveDeviceItem(device: AudioDeviceInfo?, onClick: () -> Unit) { | ||
| Column( | ||
| Modifier | ||
| .fillMaxWidth() | ||
| .background(MaterialTheme.colorScheme.primaryContainer), | ||
| ) { | ||
| Text(text = "Active device:", modifier = Modifier.padding(8.dp)) | ||
| AnimatedContent(targetState = device, label = "Active device") { | ||
| if (it == null) { | ||
| Text(text = "None") | ||
| } else { | ||
| AudioDeviceItem(it) { | ||
| onClick() | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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||
| @RequiresApi(Build.VERSION_CODES.P) | ||
| @Composable | ||
| private fun AudioDeviceItem( | ||
| deviceInfo: AudioDeviceInfo, | ||
| isLoading: Boolean = false, | ||
| onItemSelected: (AudioDeviceInfo) -> Unit, | ||
| ) { | ||
| ListItem( | ||
| modifier = Modifier.clickable { onItemSelected(deviceInfo) }, | ||
| headlineContent = { | ||
| Text(deviceInfo.productName.toString()) | ||
| }, | ||
| leadingContent = { | ||
| Text(deviceInfo.id.toString(), style = MaterialTheme.typography.headlineMedium) | ||
| }, | ||
| trailingContent = { | ||
| if (isLoading) { | ||
| CircularProgressIndicator() | ||
| } | ||
| }, | ||
| supportingContent = { | ||
| Text( | ||
| when (deviceInfo.type) { | ||
| AudioDeviceInfo.TYPE_BUILTIN_SPEAKER -> "Speaker" | ||
| AudioDeviceInfo.TYPE_BUILTIN_EARPIECE -> "Phone" | ||
| AudioDeviceInfo.TYPE_BLE_HEADSET -> "BLE Headset" | ||
| AudioDeviceInfo.TYPE_BLUETOOTH_SCO -> "BT SCO" | ||
| AudioDeviceInfo.TYPE_BLUETOOTH_A2DP -> "BT A2DP" | ||
| AudioDeviceInfo.TYPE_HEARING_AID -> "Hearing aid" | ||
| else -> "Type: ${deviceInfo.type}" | ||
| }, | ||
| ) | ||
| }, | ||
| colors = ListItemDefaults.colors(containerColor = Color.Transparent), | ||
| ) | ||
| } |
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