Add configurable segment drop for HLS playlist buffering

[Copilot]

Adds user-configurable control over how many segments are dropped from the initial HLS playlist, allowing tuning of how far behind live the stream starts (improves buffering behavior).

Changes

Proxy Server (sxm.pl)

• Added --segment-drop NUM CLI option (range: 0-30, default: 3)
• Updated hardcoded segment removal logic to use configured value
• Added validation in argument parsing

Plugin Settings

• Added segment_drop preference with UI control (numeric input, min=0, max=30)
• Integrated into proxy restart logic
• Added localization strings (PLUGIN_SIRIUSXM_SEGMENT_DROP, PLUGIN_SIRIUSXM_SEGMENT_DROP_DESC)

Proxy Integration (Proxy.pm)

• Passes segment_drop preference to sxm.pl via --segment-drop parameter
• Defaults to 3 for backward compatibility

Usage

# Command line
perl sxm.pl user pass --segment-drop 5

# Or via plugin settings UI

Settings UI

Default value of 3 maintains existing behavior. Higher values increase buffering distance from live edge.

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• esm.ubuntu.com
  • Triggering command: /usr/lib/apt/methods/https /usr/lib/apt/methods/https (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)