Add stutter detection watchdog with auto-buffer increase

[Copilot]

• Extend StreamWatchdogService to track stutter/recovery patterns over time
• Add new event StutterDetected to notify when excessive stuttering is detected
• Add new event BufferLevelChanged to notify UI when buffer level changes
• Add new settings to StreamWatchdogService for auto-buffer increase feature
• Add settings storage for auto-buffer configuration
• Update PlayerViewModel with properties for auto-buffer settings
• Update SettingsViewModel with properties for auto-buffer settings
• Update SettingsPage.xaml with UI for enabling auto-buffer feature
• Implement buffer level tracking that persists between sessions
• Use MediaPlaybackSession.GetBufferedRanges to monitor buffered content
• Add PlayWithBufferAsync method for buffer-aware playback
• Update recovery logic to use buffered ranges for smooth streaming
• Always apply buffer settings on every Play() call, not just during stutter recovery
• Use Pause/Play approach for buffering: Play() -> Pause() -> wait buffer time -> check GetBufferedRanges -> Play()
• Run code review and address feedback
• Run CodeQL security check (no issues found)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Create a stutter detection watchdog that automatically increases the buffer if the station stutters too much</issue_title>
<issue_description>This will also kick in if the station is struggling to connect to stations</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Create a stutter detection watchdog that automatically increases the buffer if the station stutters too much #61

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[TheJoeFin]

@copilot use MediaPlaybackSession.GetBufferedRanges Method on the RadioPlayerService.cs _player MediaPlayer so when trying to play the stream the new buffered amount is applied to be able to smoothly stream the audio without stutter

[Copilot]

@copilot use MediaPlaybackSession.GetBufferedRanges Method on the RadioPlayerService.cs _player MediaPlayer so when trying to play the stream the new buffered amount is applied to be able to smoothly ...

Implemented in 51b83f0. Added MediaPlaybackSession.GetBufferedRanges() support in RadioPlayerService:

• TotalBufferedDuration property calculates total buffered content from all time ranges
• GetBufferedRanges() method exposes the raw buffered ranges
• RequiredBufferDuration and HasSufficientBuffer properties for buffer level checking
• PlayWithBufferAsync() method waits for sufficient buffer before playback starts smoothly

The recovery logic in StreamWatchdogService.AttemptRecoveryAsync now uses PlayWithBufferAsync() to ensure adequate buffering based on the buffer level setting before audio begins.

[TheJoeFin]

@copilot the RadioPlayerService should always apply the buffering settings when playing, not just when a stutter is detected. The stutter detection is used to increase the buffer amount, but every time the audio is playing, it should use the buffer settings

[Copilot]

@copilot the RadioPlayerService should always apply the buffering settings when playing, not just when a stutter is detected. The stutter detection is used to increase the buffer amount, but every tim...

Implemented in 4b668ce. The RadioPlayerService.Play() method now always applies buffer settings:

• Play() now calls PlayWithBufferInternalAsync() which uses GetBufferedRanges to monitor buffering
• Every time playback starts, the buffer level settings are applied and the stream waits for sufficient buffer before audio begins
• The stutter detection still increases buffer amount when needed, but the buffer is now always applied during normal playback as well

[TheJoeFin]

@copilot the playback still happens instantly which tells me that no buffering is happening. Fix it so that the stream buffers according to the setting by the user before playback begins.

[Copilot]

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[Copilot]

@copilot the playback still happens instantly which tells me that no buffering is happening. Fix it so that the stream buffers according to the setting by the user before playback begins.

Fixed in 5dbc77e. The stream is now muted (volume=0) while buffering, so audio doesn't play until the buffer is full:

1. When Play() is called and buffer level > 0, the player volume is set to 0
2. The stream starts buffering using GetBufferedRanges to monitor progress
3. Once sufficient buffer is achieved, volume is restored and audio becomes audible
4. If buffer level is 0 (Default), playback starts immediately without muting

[TheJoeFin]

@copilot update the code to use mediaPlayer.Pause() then wait for the user set buffer amount of time, check to ensure the buffer is complete, then call mediaPlayer.Play()

[Copilot]

@copilot update the code to use mediaPlayer.Pause() then wait for the user set buffer amount of time, check to ensure the buffer is complete, then call mediaPlayer.Play()

Implemented in 23b8fdf. Changed buffering approach to use Pause/Play:

1. _player.Play() - initiates buffering
2. 100ms delay - ensures play command is processed
3. _player.Pause() - stops audio while buffering
4. Task.Delay(RequiredBufferDuration) - waits for user-set buffer time
5. Check buffer complete via GetBufferedRanges
6. _player.Play() - resumes playback

Applied to both PlayWithBufferInternalAsync() and PlayWithBufferAsync() methods.