facebook/fresco
Fresco
Fresco is an Android image loading library and cache manager designed to fetch, decode, and display images from network or local sources. It functions as a rendering engine for animated image formats and a streaming system for progressive image loading.
The library distinguishes itself through specialized memory management that utilizes off-heap allocation to reduce garbage collection overhead and prevent out-of-memory errors. It includes a dedicated rendering pipeline for animated GIFs and WebP files and supports progressive JPEG decoding to render low-resolution versions of images while they download.
The system covers a broad capability surface including multi-level memory and disk caching, asynchronous image pipelines, and a custom view hierarchy for managing image scaling and memory attachment.
Features
- Android Image Loading Libraries - Provides a complete framework for fetching, decoding, and caching images specifically for Android applications.
- Off-Heap Image Allocators - Utilizes specialized off-heap memory allocation in native regions to reduce garbage collection overhead and prevent crashes.
- Image Loading and Caching - Provides a complete framework for fetching, decoding, and displaying images from network and local sources.
- Network Image Caching - Saves network-fetched images to local disk and memory to minimize data usage and increase speed.
- Android Media Caching - Implements specialized memory and disk caching optimized for the Android media pipeline.
- Multi-Layered Caching - Implements a multi-layered caching system utilizing both memory and disk storage to optimize image retrieval.
- Animated Image Rendering - Implements a dedicated playback loop to render sequential frames for animated GIF and WebP files.
- Asynchronous Decoding Pipelines - Provides an asynchronous pipeline to fetch and decode images on background threads for a responsive user interface.
- Android Image Loading - Provides a comprehensive framework for fetching and displaying images and animated media on Android.
- Android Image Memory Management - Controls how image data occupies system memory to prevent crashes and reduce out-of-memory errors.
- Image Memory Managers - Manages image memory allocation types to prevent out-of-memory crashes and improve application stability.
- Progressive Image Streaming - Renders images incrementally during download to show a low-resolution version before the full file arrives.
- Image-Optimized Memory Regions - Places image data in specialized memory regions to increase processing speed and prevent out-of-memory errors.
- Progressive Image Decoders - Supports progressive JPEG decoding to render low-quality versions of images incrementally during download.
- Progressive Loading Strategies - Shows low-resolution versions of images while they download to improve the perceived loading speed.
- Image Scaling Wrappers - Uses a custom view hierarchy and specialized layout wrappers to manage image scaling and memory attachment.
- Progressive Image Loading - Ships a streaming system that renders low-resolution versions of images while the full-resolution file continues to download.
- Image Display and Processing - Advanced image display and management library.
- Image Loading - Library for managing images and memory.
- Image Processing - Library for managing images and the memory they use.
- ProGuard Configurations - Provides image loading and caching configuration rules.
