#4096 - Added voice message decoding, timeline cell and playback UI.

2026-04-20 16:42:44 +02:00 · 2021-06-14 17:47:59 +03:00
parent 04986bd407
commit 29e5557f7a
23 changed files with 783 additions and 33 deletions
@@ -0,0 +1,84 @@
+// 
+// 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 VoiceMessageAudioRecorderDelegate: AnyObject {
+    func audioRecorderDidStartRecording(_ audioRecorder: VoiceMessageAudioRecorder)
+    func audioRecorderDidFinishRecording(_ audioRecorder: VoiceMessageAudioRecorder)
+    func audioRecorder(_ audioRecorder: VoiceMessageAudioRecorder, didFailWithError: Error)
+}
+
+enum VoiceMessageAudioRecorderError: Error {
+    case genericError
+}
+
+class VoiceMessageAudioRecorder: NSObject, AVAudioRecorderDelegate {
+    
+    private var audioRecorder: AVAudioRecorder?
+    
+    var url: URL? {
+        return audioRecorder?.url
+    }
+    
+    var currentTime: TimeInterval {
+        return audioRecorder?.currentTime ?? 0
+    }
+    
+    weak var delegate: VoiceMessageAudioRecorderDelegate?
+    
+    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()
+            delegate?.audioRecorderDidStartRecording(self)
+        } catch {
+            delegate?.audioRecorder(self, didFailWithError: VoiceMessageAudioRecorderError.genericError)
+        }
+        
+    }
+    
+    func stopRecording() {
+        audioRecorder?.stop()
+    }
+    
+    // MARK: - AVAudioRecorderDelegate
+    
+    func audioRecorderDidFinishRecording(_ recorder: AVAudioRecorder, successfully success: Bool) {
+        if success {
+            delegate?.audioRecorderDidFinishRecording(self)
+        } else {
+            delegate?.audioRecorder(self, didFailWithError: VoiceMessageAudioRecorderError.genericError)
+        }
+    }
+    
+    func audioRecorderEncodeErrorDidOccur(_ recorder: AVAudioRecorder, error: Error?) {
+        delegate?.audioRecorder(self, didFailWithError: VoiceMessageAudioRecorderError.genericError)
+    }
+}
+
+extension String: LocalizedError {
+    public var errorDescription: String? { return self }
+}