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Keep audio session warm on native resume

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dirtydishes 2026-05-27 00:30:26 -04:00
parent ae5fb256ae
commit f0226c651d
6 changed files with 602 additions and 0 deletions
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29
Dreamio/VLCNativePlaybackBackend.swift
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@ -1,3 +1,4 @@
import AVFoundation
import UIKit
#if canImport(MobileVLCKit)
@ -73,6 +74,7 @@ final class VLCNativePlaybackBackend: NSObject, NativePlaybackBackend {
media.addOption(":http-header=\(headerValue)")
}
addConservativePlaybackOptions(to: media)
prepareAudioSessionForPlayback(reason: "initial-play")
mediaPlayer.currentAudioPlaybackDelay = 0
mediaPlayer.media = media
@ -91,6 +93,10 @@ final class VLCNativePlaybackBackend: NSObject, NativePlaybackBackend {
func play() {
#if canImport(MobileVLCKit)
let toggleState = playbackToggleState(for: mediaPlayer.state)
if NativePlaybackAudioSessionPolicy.shouldPrepareBeforePlayback(from: toggleState) {
prepareAudioSessionForPlayback(reason: "resume-from-\(toggleState)")
}
#if DEBUG
logPlaybackSnapshot(reason: "before-play")
#endif
@ -114,6 +120,7 @@ final class VLCNativePlaybackBackend: NSObject, NativePlaybackBackend {
return
}
mediaPlayer.pause()
keepAudioSessionWarmAfterPause()
#if DEBUG
logPlaybackSnapshot(reason: "after-pause-command")
DispatchQueue.main.asyncAfter(deadline: .now() + 0.25) { [weak self] in
@ -342,6 +349,28 @@ final class VLCNativePlaybackBackend: NSObject, NativePlaybackBackend {
].forEach { media.addOption($0) }
}
private func prepareAudioSessionForPlayback(reason: String) {
do {
let session = AVAudioSession.sharedInstance()
try session.setCategory(.playback, mode: .moviePlayback, options: [])
try session.setActive(true)
#if DEBUG
print("[DreamioVLC] audio-session prepared reason=\(reason) category=\(session.category.rawValue) mode=\(session.mode.rawValue)")
#endif
} catch {
#if DEBUG
print("[DreamioVLC] audio-session prepare failed reason=\(reason) error=\(error.localizedDescription)")
#endif
}
}
private func keepAudioSessionWarmAfterPause() {
prepareAudioSessionForPlayback(reason: "pause-keep-warm")
DispatchQueue.main.asyncAfter(deadline: .now() + 0.08) { [weak self] in
self?.prepareAudioSessionForPlayback(reason: "pause-keep-warm-follow-up")
}
}
private func isPauseableState(_ state: VLCMediaPlayerState) -> Bool {
switch state {
case .playing, .buffering: