#4090 - Add voice message controller, audio recorder and toolbar view…

… links.

Riot/Modules/Room/VoiceMessages/AudioPlayer.swift

@@ -0,0 +1,17 @@
+// 
+// Copyright 2021 New Vector Ltd
+//
+// 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.
+//
+
+import Foundation

Riot/Modules/Room/VoiceMessages/AudioRecorder.swift

@@ -0,0 +1,79 @@
+// 
+// Copyright 2021 New Vector Ltd
+//
+// 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.
+//
+
+import Foundation
+import AVFoundation
+
+protocol AudioRecorderDelegate: AnyObject {
+    func audioRecorderDidStartRecording(_ audioRecorder: AudioRecorder)
+    func audioRecorderDidFinishRecording(_ audioRecorder: AudioRecorder)
+    func audioRecorder(_ audioRecorder: AudioRecorder, didFailWithError: Error)
+}
+
+enum AudioRecorderError: Error {
+    case genericError
+}
+
+class AudioRecorder: NSObject, AVAudioRecorderDelegate {
+
+    private(set) var isRecording: Bool = false
+    private(set) var currentTime: TimeInterval = 0
+    private(set) var url: URL?
+
+    private var audioRecorder: AVAudioRecorder!
+
+    weak var delegate: AudioRecorderDelegate?
+
+    func recordWithOuputURL(_ url: URL) {
+
+        let settings = [AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
+                        AVSampleRateKey: 12000,
+                        AVNumberOfChannelsKey: 1,
+                        AVEncoderAudioQualityKey: AVAudioQuality.high.rawValue]
+
+        do {
+            try AVAudioSession.sharedInstance().setCategory(.playAndRecord, mode: .default)
+            audioRecorder = try AVAudioRecorder(url: url, settings: settings)
+            audioRecorder.delegate = self
+            audioRecorder.record()
+        } catch {
+            delegate?.audioRecorder(self, didFailWithError: AudioRecorderError.genericError)
+        }
+
+    }
+
+    func stopRecording() {
+        audioRecorder.stop()
+    }
+
+    // MARK: - AVAudioRecorderDelegate
+
+    func audioRecorderDidFinishRecording(_ recorder: AVAudioRecorder, successfully success: Bool) {
+        if success {
+            delegate?.audioRecorderDidFinishRecording(self)
+        } else {
+            delegate?.audioRecorder(self, didFailWithError: AudioRecorderError.genericError)
+        }
+    }
+
+    func audioRecorderEncodeErrorDidOccur(_ recorder: AVAudioRecorder, error: Error?) {
+        delegate?.audioRecorder(self, didFailWithError: AudioRecorderError.genericError)
+    }
+}
+
+extension String: LocalizedError {
+    public var errorDescription: String? { return self }
+}

Riot/Modules/Room/VoiceMessages/VoiceMessageController.swift

@@ -0,0 +1,79 @@
+// 
+// Copyright 2021 New Vector Ltd
+//
+// 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.
+//
+
+import Foundation
+
+class VoiceMessageController: VoiceMessageToolbarViewDelegate, AudioRecorderDelegate {
+
+    let voiceMessageToolbarView: VoiceMessageToolbarView
+    var audioRecorder: AudioRecorder?
+
+    init() {
+        voiceMessageToolbarView = VoiceMessageToolbarView.instanceFromNib()
+        voiceMessageToolbarView.delegate = self
+    }
+
+    // MARK: - VoiceMessageToolbarViewDelegate
+
+    func voiceMessageToolbarViewDidRequestRecordingStart(_ toolbarView: VoiceMessageToolbarView) {
+
+        let temporaryDirectoryURL = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true)
+        let temporaryFileURL = temporaryDirectoryURL.appendingPathComponent(ProcessInfo().globallyUniqueString)
+
+        audioRecorder = AudioRecorder()
+        audioRecorder?.delegate = self
+        audioRecorder?.recordWithOuputURL(temporaryFileURL)
+    }
+
+    func voiceMessageToolbarViewDidRequestRecordingFinish(_ toolbarView: VoiceMessageToolbarView) {
+        audioRecorder?.stopRecording()
+    }
+
+    func voiceMessageToolbarViewDidRequestRecordingCancel(_ toolbarView: VoiceMessageToolbarView) {
+        audioRecorder?.stopRecording()
+        deleteRecordingAtURL(audioRecorder?.url)
+    }
+
+    // MARK: - AudioRecorderDelegate
+
+    func audioRecorderDidStartRecording(_ audioRecorder: AudioRecorder) {
+        voiceMessageToolbarView.state = .recording
+    }
+
+    func audioRecorderDidFinishRecording(_ audioRecorder: AudioRecorder) {
+        voiceMessageToolbarView.state = .idle
+    }
+
+    func audioRecorder(_ audioRecorder: AudioRecorder, didFailWithError: Error) {
+        MXLog.error("Failed recording voice message.")
+        voiceMessageToolbarView.state = .idle
+    }
+
+    // MARK: - Private
+
+    private func deleteRecordingAtURL(_ url: URL?) {
+        guard let url = url else {
+            MXLog.error("Invalid audio recording URL")
+            return
+        }
+
+        do {
+            try FileManager.default.removeItem(at: url)
+        } catch {
+            MXLog.error(error)
+        }
+    }
+}

Riot/Modules/Room/Views/InputToolbar/VoiceMessageToolbarView.swift → Riot/Modules/Room/VoiceMessages/VoiceMessageToolbarView.swift

@@ -16,12 +16,20 @@
 
 import UIKit
 
-private enum VoiceMessageToolbarViewState {
+protocol VoiceMessageToolbarViewDelegate: AnyObject {
+    func voiceMessageToolbarViewDidRequestRecordingStart(_ toolbarView: VoiceMessageToolbarView)
+    func voiceMessageToolbarViewDidRequestRecordingCancel(_ toolbarView: VoiceMessageToolbarView)
+    func voiceMessageToolbarViewDidRequestRecordingFinish(_ toolbarView: VoiceMessageToolbarView)
+}
+
+enum VoiceMessageToolbarViewState {
     case idle
     case recording
 }
 
 class VoiceMessageToolbarView: PassthroughView, Themable, UIGestureRecognizerDelegate {
+
+    weak var delegate: VoiceMessageToolbarViewDelegate?
 
     @IBOutlet private var backgroundView: UIView!
 
@@ -36,14 +44,25 @@ class VoiceMessageToolbarView: PassthroughView, Themable, UIGestureRecognizerDel
 
     private var cancelLabelToRecordButtonDistance: CGFloat = 0.0
 
-    private var state: VoiceMessageToolbarViewState = .idle {
+    private var currentTheme: Theme? {
         didSet {
             updateUIAnimated(true)
         }
     }
 
-    private var currentTheme: Theme? {
+    var state: VoiceMessageToolbarViewState = .idle {
         didSet {
+            switch state {
+            case .recording:
+                let convertedFrame = self.convert(slideToCancelLabel.frame, from: slideToCancelContainerView)
+                cancelLabelToRecordButtonDistance = recordButtonsContainerView.frame.minX - convertedFrame.maxX
+            case .idle:
+                gestureRecognizers?.forEach { gestureRecognizer in
+                    gestureRecognizer.isEnabled = false
+                    gestureRecognizer.isEnabled = true
+                }
+            }
+
             updateUIAnimated(true)
         }
     }
@@ -90,13 +109,11 @@ class VoiceMessageToolbarView: PassthroughView, Themable, UIGestureRecognizerDel
     @objc private func handleLongPress(_ gestureRecognizer: UILongPressGestureRecognizer) {
         switch gestureRecognizer.state {
         case UIGestureRecognizer.State.began:
-            state = .recording
-
-            let convertedFrame = self.convert(slideToCancelLabel.frame, from: slideToCancelContainerView)
-            cancelLabelToRecordButtonDistance = recordButtonsContainerView.frame.minX - convertedFrame.maxX
-
+            delegate?.voiceMessageToolbarViewDidRequestRecordingStart(self)
         case UIGestureRecognizer.State.ended:
-            state = .idle
+            delegate?.voiceMessageToolbarViewDidRequestRecordingFinish(self)
+        case UIGestureRecognizer.State.cancelled:
+            delegate?.voiceMessageToolbarViewDidRequestRecordingCancel(self)
         default:
             break
         }