FD-/RPiPlayFork
RPiPlay
RPiPlay 是一个 AirPlay 镜像服务器和媒体接收器，旨在将 Apple 设备连接到 Raspberry Pi 硬件。它作为一个媒体网关，接收来自 iOS 和 macOS 设备的加密视频和音频流，并将其投影到连接的显示器和音响系统上。
该项目专注于低延迟视频流传输，通过在帧到达时立即渲染来绕过预定的时间戳。它利用位流操作和专门的视频流水线来减少源设备和接收器之间的传输延迟。
该系统提供硬件加速渲染以实现流畅的视觉播放，并采用基于时钟的同步来保持音视频对齐。它包括用于将音频路由到特定硬件端口的控制功能，以及配置显示输出设置（如旋转和图像翻转）的选项。
Features
- AirPlay Receivers - Provides an AirPlay protocol implementation to receive and play mirrored screen and audio streams on non-Apple hardware.
- Remote Stream Receiving - Receives encrypted video and audio streams from external devices for real-time playback.
- Hardware-Accelerated Rendering - Offloads the composition of visual layers to the GPU to ensure smooth, high-performance mirrored playback.
- Low-Latency Video Streaming - Implements high-speed transport to minimize end-to-end delay for real-time video mirroring.
- Pipeline Optimizations - Implements bitstream manipulation and a specialized video pipeline to minimize end-to-end transmission delay.
- Hardware-Accelerated Playback - Offloads video decoding to the GPU for high-performance, smooth screen mirroring playback.
- Synchronized Low-Latency Transport - Transports synchronized audio and video streams with minimal buffering for real-time interactive mirroring.
- System Latency Reduction - Minimizes processing lag by rendering audio and video frames immediately upon receipt.
- Frame Rendering Latency Reduction - Reduces transmission delay by rendering frames immediately upon arrival instead of waiting for scheduled timestamps.
- Packet Decapsulation - Decrypts and unpacks AirPlay network packets to extract raw media bitstreams for processing.
- Media Casting Receivers - Transforms Raspberry Pi hardware into a receiver for remote audio and video screen casting.
- Bitstream Filters - Implements bitstream filters to modify encoded video packets in real time to reduce latency without full re-encoding.
- Apple Media Gateways - Acts as a bridge allowing iOS and macOS devices to cast mirrored content to non-Apple hardware.
- Audio-Video Synchronization - Coordinates the timing of audio and video streams to ensure correct lip-sync during playback.
- Multimedia Receiver Setups - Turns a Raspberry Pi into a dedicated hardware receiver for wireless media and screen playback.
- Audio Clock Synchronizers - Aligns virtual audio streams with hardware clocks to maintain lip-sync and prevent temporal drift.
- Communication and Media - Server software for mirroring mobile device screens to hardware.
