EverLive v1.4.0

Added

• 2x Motion-Interpolation Frame Generation (Beta · GC573):
  • Integrated 2x motion-interpolation frame generation powered by the Vulkan lsfg-vk layer (Lossless Scaling Frame Generation 2x on Linux).
  • Dedicated modes: 30 → 60 FPS for 30 FPS console titles with real-time phase-locked cadence deduplication, and 60 → 120 FPS for 60 FPS feeds on high-refresh displays.
  • Custom low-latency Vulkan swapchain presentation pipeline with optional Low-Latency Swapchain mode (LSFGVK_PRESERVE_SWAPCHAIN_IMAGE_COUNT=1).
  • Automatic Steam library discovery across all multi-disk Steam library paths (libraryfolders.vdf).
  • Graceful fallback: 100% standalone and optional; falls back to native ultra-low-latency presentation if components are absent.
• AVerMedia Live Gamer DUO (GC570D) Userspace VFIO Engine (tools/opengc570d-userd):
  • Added full blob-free userspace vfio-pci capture support for the AVerMedia Live Gamer DUO (GC570D, PCI 1461:0054, subsystem 1461:5700), ported from neoyagami/OpenGC570D (commit 4673bb9, GPL-2.0-only).
  • Automatic PCI subsystem disambiguation (0x5730 Live Gamer 4K GC573 vs. 0x5700 Live Gamer DUO GC570D) in play.sh and tools/everlive/everlive_viewer.py.
  • Simultaneous dual-HDMI capture pipeline:
    • HDMI IN 1 (Passthrough + Capture): ITE IT68051 receiver + VideoSplitter microcontroller + Xilinx 3000-nit BT.2020 HDR-to-SDR 3D LUT preprocessor + VIP0 hardware scaler (4K60 HDR -> 1080p60 YUYV, plus native 1080p, 720p, 1024x768, 576p, 480p, and 640x480).
    • HDMI IN 2 (Secondary Capture): ITE IT6802 receiver + VIP1 hardware scaler (1080p60 YUYV) for facecam or secondary console capture.
  • Hardware-validated HDMI IN 1 2.0 Stereo and 5.1/7.1 Multichannel L-PCM passthrough (PR #6 / 484aa8d) and active non-blocking audio recovery (4673bb9) across live 2.0 <-> 5.1 format switches without disturbing HDMI OUT video passthrough.
• EverLive SDL2 Gaming Preview, Picture-in-Picture & Dual Virtual Cameras for DUO:
  • Integrated gc570d_everlive.[ch] frontend directly into opengc570d-userd reading lock-free seqlock frames from /dev/shm/gc570d_v4l2_shm.
  • Interactive SDL2 gaming window (--sdl) with live 1/2 input switching, Picture-in-Picture (--pip / P), aspect ratio overrides (--aspect / A), integer scaling (--scale / L), live stats OSD (Tab/O, corner cycle C), and low-latency SDL2 desktop audio monitoring (M mute, ↑/↓ volume).
  • Dual v4l2loopback virtual camera outputs: /dev/video10 ("EverLive Capture", following the selected DUO input) and /dev/video11 ("EverLive Capture HDMI 2", dedicated to HDMI IN 2), plus module-free PipeWire camera/audio source nodes and libgc570d-v4l2.so (LD_PRELOAD) virtual V4L2 fallback (/dev/video60 and /dev/video61).
• Console Hub DUO Controls & Runtime CLI (gc570d-ctl):
  • Added Live Gamer DUO controls to everlive_viewer.py: DUO Input selector (HDMI 1 / HDMI 2), EDID: Internal Bridge vs. EDID: Downstream Copy policy buttons, Pulse HPD hot-plug button, and DUO RGB LED effect mapping (colorful, breathing, static, off) over $XDG_RUNTIME_DIR/gc570d/control.sock.
  • Updated build.sh, install.sh, uninstall.sh, and .github/workflows/ci.yml to build, configure, and verify both opengc573-userd and opengc570d-userd.

Fixed

• Instant 4K Capture via CAP_IPC_LOCK (PR #53 by Lou Perret):
  • Implemented raw capget syscall query in gc573_user_streamer.c to detect active CAP_IPC_LOCK. When present, EverLive bypasses RLIMIT_MEMLOCK accounting immediately after installation without requiring a session logout/relogin.
• Direct Headless / Studio Mode Launch:
  • Resolved unassigned volume variable in Console Hub GUI (start_studio()) that prevented launching directly into Headless/OBS mode.
• PipeWire Virtual Audio Tap Isolation:
  • Added PW_STREAM_FLAG_DONT_RECONNECT and "node.dont-reconnect" = "true" to prevent tap fallback to default playback devices.
  • Added persistent null sink provisioning via pactl load-module module-null-sink fallback.
• GC570D VFIO interrupt allocation: Restored MSI-first ordering in pci_alloc_irq_vectors(). The INTx-first sequence introduced during the 1.4.0 hardening work could stall the bridge I2C engine, causing the HDMI IN 2 receiver probe to time out at register 0x0f (-110) and aborting probe on real GC570D hardware. INTx remains the fallback, and the 2 ms MMIO status poll covers INTx and eventfd-less setups.
• GC570D hardware validation: VFIO probe, MSI interrupt delivery, IT68051/IT6802 initialization and IRQ handling verified on a physical Live Gamer DUO.

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