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Code Issues Projects Releases Wiki Activity

fix: GIF may cause background audio session pause issue

This commit is contained in:
CMK 2021-06-30 18:19:12 +08:00
parent 4318e3c9d1
commit 777534c82d
1 changed files with 57 additions and 12 deletions
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65
Mastodon/Scene/Share/ViewModel/VideoPlayerViewModel.swift
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@ -37,6 +37,7 @@ final class VideoPlayerViewModel {
private var timeControlStatusObservation: NSKeyValueObservation?
let timeControlStatus = CurrentValueSubject<AVPlayer.TimeControlStatus, Never>(.paused)
let playbackState = CurrentValueSubject<PlaybackState, Never>(PlaybackState.unknown)
init(previewImageURL: URL?, videoURL: URL, videoSize: CGSize, videoKind: VideoPlayerViewModel.Kind) {
self.previewImageURL = previewImageURL
@ -59,18 +60,41 @@ final class VideoPlayerViewModel {
self.timeControlStatus.value = player.timeControlStatus
}
// update audio session category for user interactive event stream
player.publisher(for: \.status, options: [.initial, .new])
.sink(receiveValue: { [weak self] status in
guard let self = self else { return }
switch status {
case .failed:
self.playbackState.value = .failed
case .readyToPlay:
self.playbackState.value = .readyToPlay
case .unknown:
self.playbackState.value = .unknown
@unknown default:
assertionFailure()
}
})
.store(in: &disposeBag)
timeControlStatus
.sink { [weak self] timeControlStatus in
guard let _ = self else { return }
guard timeControlStatus == .playing else { return }
NotificationCenter.default.post(name: VideoPlayerViewModel.appWillPlayVideoNotification, object: nil)
switch videoKind {
case .gif:
break
case .video:
break
// try? AVAudioSession.sharedInstance().setCategory(.soloAmbient, mode: .default)
guard let self = self else { return }
// emit playing event
if timeControlStatus == .playing {
NotificationCenter.default.post(name: VideoPlayerViewModel.appWillPlayVideoNotification, object: nil)
}
switch timeControlStatus {
case .paused:
self.playbackState.value = .paused
case .waitingToPlayAtSpecifiedRate:
self.playbackState.value = .buffering
case .playing:
self.playbackState.value = .playing
@unknown default:
assertionFailure()
self.playbackState.value = .unknown
}
}
.store(in: &disposeBag)
@ -82,6 +106,27 @@ final class VideoPlayerViewModel {
isPlay ? self.play() : self.pause()
}
.store(in: &disposeBag)
let sessionName = videoKind == .gif ? "GIF" : "Video"
playbackState
.receive(on: RunLoop.main)
.sink { [weak self] status in
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: %s status: %s", ((#file as NSString).lastPathComponent), #line, #function, sessionName, status.description)
guard let self = self else { return }
// only update audio session for video
guard self.videoKind == .video else { return }
switch status {
case .unknown, .buffering, .readyToPlay:
break
case .playing:
try? AVAudioSession.sharedInstance().setCategory(.soloAmbient)
try? AVAudioSession.sharedInstance().setActive(true)
case .paused, .stopped, .failed:
try? AVAudioSession.sharedInstance().setCategory(.ambient)
try? AVAudioSession.sharedInstance().setActive(false, options: .notifyOthersOnDeactivation)
}
}
.store(in: &disposeBag)
}
deinit {