2021-06-07 07:20:26 +00:00
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//
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// Copyright 2021 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import Foundation
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import AVFoundation
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@objc public protocol VoiceMessageControllerDelegate: AnyObject {
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func voiceMessageControllerDidRequestMicrophonePermission(_ voiceMessageController: VoiceMessageController)
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func voiceMessageController(_ voiceMessageController: VoiceMessageController, didRequestSendForFileAtURL url: URL, completion: @escaping (Bool) -> Void)
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}
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public class VoiceMessageController: NSObject, VoiceMessageToolbarViewDelegate, VoiceMessageAudioRecorderDelegate {
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private let themeService: ThemeService
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private let _voiceMessageToolbarView: VoiceMessageToolbarView
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private let timeFormatter: DateFormatter
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private var displayLink: CADisplayLink!
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private var audioRecorder: VoiceMessageAudioRecorder?
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private var audioSamples: [Float] = []
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private var isInLockedMode: Bool = false
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@objc public weak var delegate: VoiceMessageControllerDelegate?
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@objc public var voiceMessageToolbarView: UIView {
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return _voiceMessageToolbarView
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}
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@objc public init(themeService: ThemeService) {
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_voiceMessageToolbarView = VoiceMessageToolbarView.instanceFromNib()
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self.themeService = themeService
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self.timeFormatter = DateFormatter()
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super.init()
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_voiceMessageToolbarView.delegate = self
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timeFormatter.dateFormat = "m:ss"
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2021-06-22 06:59:14 +00:00
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displayLink = CADisplayLink(target: WeakObjectWrapper(self), selector: #selector(handleDisplayLinkTick))
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displayLink.isPaused = true
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displayLink.add(to: .current, forMode: .common)
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self._voiceMessageToolbarView.update(theme: self.themeService.theme)
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NotificationCenter.default.addObserver(self, selector: #selector(handleThemeDidChange), name: .themeServiceDidChangeTheme, object: nil)
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updateUI()
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}
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// MARK: - VoiceMessageToolbarViewDelegate
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func voiceMessageToolbarViewDidRequestRecordingStart(_ toolbarView: VoiceMessageToolbarView) {
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guard AVAudioSession.sharedInstance().recordPermission == .granted else {
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delegate?.voiceMessageControllerDidRequestMicrophonePermission(self)
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return
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}
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let temporaryDirectoryURL = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true)
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let temporaryFileURL = temporaryDirectoryURL.appendingPathComponent(ProcessInfo().globallyUniqueString).appendingPathExtension("m4a")
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self.audioRecorder = VoiceMessageAudioRecorder()
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self.audioRecorder?.delegate = self
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self.audioRecorder?.recordWithOuputURL(temporaryFileURL)
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}
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func voiceMessageToolbarViewDidRequestRecordingFinish(_ toolbarView: VoiceMessageToolbarView) {
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audioRecorder?.stopRecording()
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guard let url = audioRecorder?.url else {
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MXLog.error("Invalid audio recording URL")
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return
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}
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delegate?.voiceMessageController(self, didRequestSendForFileAtURL: url) { [weak self] success in
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UINotificationFeedbackGenerator().notificationOccurred( (success ? .success : .error))
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self?.deleteRecordingAtURL(url)
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}
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}
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func voiceMessageToolbarViewDidRequestRecordingCancel(_ toolbarView: VoiceMessageToolbarView) {
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isInLockedMode = false
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audioRecorder?.stopRecording()
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deleteRecordingAtURL(audioRecorder?.url)
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UINotificationFeedbackGenerator().notificationOccurred(.error)
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}
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func voiceMessageToolbarViewDidRequestLockedModeRecording(_ toolbarView: VoiceMessageToolbarView) {
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isInLockedMode = true
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updateUI()
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}
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// MARK: - AudioRecorderDelegate
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func audioRecorderDidStartRecording(_ audioRecorder: VoiceMessageAudioRecorder) {
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updateUI()
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}
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func audioRecorderDidFinishRecording(_ audioRecorder: VoiceMessageAudioRecorder) {
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updateUI()
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}
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func audioRecorder(_ audioRecorder: VoiceMessageAudioRecorder, didFailWithError: Error) {
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isInLockedMode = false
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updateUI()
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MXLog.error("Failed recording voice message.")
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}
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// MARK: - Private
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private func deleteRecordingAtURL(_ url: URL?) {
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guard let url = url else {
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return
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}
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do {
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try FileManager.default.removeItem(at: url)
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} catch {
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MXLog.error(error)
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}
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}
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@objc private func handleThemeDidChange() {
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self._voiceMessageToolbarView.update(theme: self.themeService.theme)
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}
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@objc private func handleDisplayLinkTick() {
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updateUI()
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}
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private func updateUI() {
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displayLink.isPaused = !(audioRecorder?.isRecording ?? false)
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let requiredNumberOfSamples = _voiceMessageToolbarView.getRequiredNumberOfSamples()
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if audioSamples.count != requiredNumberOfSamples {
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audioSamples = [Float](repeating: 0.0, count: requiredNumberOfSamples)
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}
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if let sample = audioRecorder?.averagePowerForChannelNumber(0) {
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audioSamples.append(sample)
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audioSamples.remove(at: 0)
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}
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var details = VoiceMessageToolbarViewDetails()
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details.state = (audioRecorder?.isRecording ?? false ? (isInLockedMode ? .lockedModeRecord : .record) : (isInLockedMode ? .lockedModePlayback : .idle))
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details.elapsedTime = timeFormatter.string(from: Date(timeIntervalSinceReferenceDate: audioRecorder?.currentTime ?? 0.0))
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details.audioSamples = audioSamples
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_voiceMessageToolbarView.configureWithDetails(details)
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}
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}
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