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feat(podcasts): prepare seekable MP4 replays and overlay controls

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Remux completed broadcasts with FFmpeg, retain source segments and account for both formats. Serve authenticated byte ranges and add native Android/Desktop replay controls with auto-hide.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Paul Schneider 2026-10-25 00:48:53 +01:00
commit 1dcbfe159a
Signed by: notazof
GPG key ID: AD4B9B545FBD7D12
31 changed files with 1386 additions and 36 deletions
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2
src/PostIt/PostIt.Android/PlatformBootstrap.cs
View file

@ -21,7 +21,7 @@ internal static class PlatformBootstrap
};
Platform.TryGetCurrentLocationAsync = AndroidCurrentLocationProvider.TryGetCurrentLocationAsync;
Platform.CreateVideoSurface = player => new AndroidVideoSurface(player);
Platform.CreateVideoSurface = (player, replay) => new AndroidVideoSurface(player, replay);
if (System.OperatingSystem.IsAndroidVersionAtLeast(26))
{
Platform.GetPodcastCaptureDevices = AndroidPodcastCapture.GetDevices;

114
src/PostIt/PostIt.Android/Services/AndroidVideoSurface.cs
View file

@ -3,13 +3,20 @@ using Avalonia.Android;
using Avalonia.Controls;
using Avalonia.Platform;
using LibVLCSharp.Shared;
using Android.Content;
using Android.OS;
using Android.Views;
using Android.Widget;
using PostIt.Services;
using VideoView = LibVLCSharp.Platforms.Android.VideoView;
using Button = Android.Widget.Button;
namespace PostIt.Android.Services;
internal sealed class AndroidVideoSurface(MediaPlayer player) : NativeControlHost, IDisposable
internal sealed class AndroidVideoSurface(MediaPlayer player, bool replay) : NativeControlHost, IDisposable
{
private VideoView? _video;
private ReplayLayout? _layout;
private bool _disposed;
protected override IPlatformHandle CreateNativeControlCore(IPlatformHandle parent)
@ -18,13 +25,19 @@ internal sealed class AndroidVideoSurface(MediaPlayer player) : NativeControlHos
?? throw new InvalidOperationException("L'activite Android est indisponible.");
var video = new VideoView(activity) { MediaPlayer = _disposed ? null : player };
_video = video;
if (replay && !_disposed)
{
_layout = new ReplayLayout(activity, video, player);
return new AndroidViewControlHandle(_layout);
}
return new AndroidViewControlHandle(video);
}
protected override void DestroyNativeControlCore(IPlatformHandle control)
{
if (control is AndroidViewControlHandle { View: VideoView video })
video.MediaPlayer = null;
_layout?.Stop();
_layout = null;
if (_video is not null) _video.MediaPlayer = null;
_video = null;
base.DestroyNativeControlCore(control);
}
@ -32,6 +45,101 @@ internal sealed class AndroidVideoSurface(MediaPlayer player) : NativeControlHos
public void Dispose()
{
_disposed = true;
_layout?.Stop();
if (_video is not null) _video.MediaPlayer = null;
}
private sealed class ReplayLayout : FrameLayout
{
private readonly MediaPlayer _player;
private readonly ReplayControlsState _state = new();
private readonly Handler _handler = new(Looper.MainLooper!);
private readonly Java.Lang.Runnable _tick;
private readonly LinearLayout _bar;
private readonly Button _toggle;
private readonly SeekBar _seek;
private readonly TextView _time;
private bool _stopped;
public ReplayLayout(Context context, VideoView video, MediaPlayer player) : base(context)
{
_player = player;
AddView(video, new FrameLayout.LayoutParams(LayoutParams.MatchParent, LayoutParams.MatchParent));
_bar = new LinearLayout(context) { Orientation = Orientation.Horizontal };
_bar.SetGravity(GravityFlags.CenterVertical);
_bar.SetPadding(12, 8, 12, 8);
_bar.SetBackgroundColor(global::Android.Graphics.Color.Argb(210, 20, 20, 20));
_toggle = new Button(context) { Text = "Pause", ContentDescription = "Lecture ou pause du replay" };
_seek = new SeekBar(context) { Max = 10000, ContentDescription = "Position dans le replay" };
_time = new TextView(context);
_time.SetTextColor(global::Android.Graphics.Color.White);
_bar.AddView(_toggle);
_bar.AddView(_seek, new LinearLayout.LayoutParams(0, LayoutParams.WrapContent, 1));
_bar.AddView(_time);
AddView(_bar, new FrameLayout.LayoutParams(LayoutParams.MatchParent, LayoutParams.WrapContent, GravityFlags.Bottom));
_toggle.Click += Toggle;
_seek.StartTrackingTouch += BeginSeek;
_seek.StopTrackingTouch += EndSeek;
_seek.ProgressChanged += ProgressChanged;
_tick = new Java.Lang.Runnable(Update);
_handler.Post(_tick);
}
public override bool DispatchTouchEvent(MotionEvent? e)
{
_state.Show();
_bar.Visibility = ViewStates.Visible;
return base.DispatchTouchEvent(e);
}
private void Update()
{
if (_stopped) return;
var duration = Math.Max(0, _player.Length);
var position = Math.Max(0, _player.Time);
_bar.Visibility = _state.IsVisible(_player.IsPlaying, _bar.HasFocus) ? ViewStates.Visible : ViewStates.Gone;
_toggle.Text = _player.IsPlaying ? "Pause" : "Lire";
_seek.Enabled = duration > 0 && _player.IsSeekable;
if (!_state.IsInteracting)
_seek.Progress = duration > 0 ? (int)Math.Clamp(position * 10000d / duration, 0, 10000) : 0;
_time.Text = $"{ReplayControlsState.FormatTime(_state.IsInteracting ? (long)(duration * (_seek.Progress / 10000d)) : position)} / {ReplayControlsState.FormatTime(duration)}";
_handler.PostDelayed(_tick, 250);
}
private void Toggle(object? sender, EventArgs e)
{
if (_player.IsPlaying) _player.Pause();
else _player.Play();
_state.Show();
}
private void BeginSeek(object? sender, SeekBar.StartTrackingTouchEventArgs e) => _state.IsInteracting = true;
private void EndSeek(object? sender, SeekBar.StopTrackingTouchEventArgs e)
{
Seek();
_state.IsInteracting = false;
}
private void ProgressChanged(object? sender, SeekBar.ProgressChangedEventArgs e)
{
if (e.FromUser && !_state.IsInteracting) Seek();
}
private void Seek()
{
if (_player.IsSeekable) _player.Time = (long)(_player.Length * (_seek.Progress / 10000d));
_state.Show();
}
public void Stop()
{
if (_stopped) return;
_stopped = true;
_handler.RemoveCallbacks(_tick);
_toggle.Click -= Toggle;
_seek.StartTrackingTouch -= BeginSeek;
_seek.StopTrackingTouch -= EndSeek;
_seek.ProgressChanged -= ProgressChanged;
_tick.Dispose();
_handler.Dispose();
}
}
}