# Changelog

Notable changes to `screen_cast`. Loosely follows [Keep a Changelog].

## [Unreleased]

### Added

- **Phase 9 — iOS receiver app** (`ios/`): a native Swift receiver so an iPhone
  can act as the second receiver. Speaks the existing signaling + RTP protocol
  (no C++ changes), mirroring the Android receiver (Phase 8) source-to-source.
  - RTP core (header/packet, jitter buffer, H.264 depacketizer) ported
    source-to-source from the Android receiver.
  - BSD-socket signaling server (dual-stack, most-recent-peer, never-throwing
    sends) + `NSBonjourServices` advertisement.
  - VideoToolbox H.264 decode (in-band SPS/PPS, real-time, session rebuilt on
    resolution change) rendered via `AVSampleBufferDisplayLayer` (letterbox).
  - PLI keyframe recovery (rate-limited 500 ms) and `pendingOffer` for late
    surface attach; no placeholder sizing before the first real keyframe.
  - XcodeGen project + `bootstrap.sh`; XCTest port of the Android suite plus new
    signaling / line-framing / AVCC / NAL-extraction coverage.

> **Status:** authored; on-device validation pending a Mac + Xcode 26 + iPhone 16
> (local-network/Bonjour consent, the H.264 format-description recipe, and the
> VideoToolbox render path are the on-device verification items).

[Keep a Changelog]: https://keepachangelog.com/en/1.1.0/