xcamera 0.0.2

A lightweight Flutter camera plugin for Linux supporting high-performance V4L2 streaming and synchronized H.264/AAC video recording.

XCamera

A high-performance, lightweight Flutter camera plugin built exclusively for Linux platforms.

It uses a Clean Architecture design with Flutter Method Channels, Event Channels, and Flutter Textures to provide efficient real-time camera streaming with low CPU and memory overhead.

Features

• Device Discovery: Enumerate connected camera devices and their hardware capabilities.
• High-Performance Live Preview: Render real-time camera streams using optimized Flutter Textures.
• Video Recording: Capture and encode video in H.264 format with optional AAC audio support, producing standard MP4 files.
• Configurable Audio Recording: Enable or disable audio capture using the enableAudio setting.
• Multi-Camera Support: Create multiple CameraController instances to preview and record from multiple camera devices simultaneously.
• Raw Stream Access: Access raw image frames directly in Dart for processing, computer vision, or custom analytics.

Prerequisites

To build and compile the native C++ engine, ensure the following tools and development headers are installed on your Linux host:

sudo apt update
sudo apt install -y libgtk-3-dev libudev-dev libopenh264-dev libyuv-dev

Platform Support

This package is designed exclusively for Linux (requires Kernel headers and V4L2 subsystem). It is not supported on Windows, macOS, Android, or iOS.

Native Implementation & Dependencies

The native Linux C++ library is built directly into the app bundle using CMake. It leverages:

• Video4Linux2 (V4L2): Low-level Linux video capture.
• OpenH264: Real-time H.264 video compression (system package dependency).
• VisualOn AAC Encoder (vo-aacenc): Bundled locally in third_party/ for offline-ready compilation.
• miniaudio & minimp4: Low-overhead microphone recording and container muxing (bundled locally in third_party/).
• libyuv: High-speed pixel format conversions (system package dependency).