Zapping VBI library 0.2.25

Zapping VBI library provides routines to read from raw Vertical Blanking Interval capture devices, to demodulate raw to sliced VBI data, and to interpret the data of several popular services.
Basically, it offers all the functionality needed by a VBI application except for the UI.
Main features:
- Captures raw VBI samples from V4L, V4L2 (Linux 2.6) and FreeBSD BKTR devices, sliced VBI data from Linux DVB devices
- Implements a VBI Proxy to share one VBI device between multiple applications
- Has a robust and versatile bit slicer which handles a wide range of data services
- Functions to capture multiple data services at once, such as Closed Caption (both NTSC and PAL), Teletext, VPS, WSS, XDS
- Level 3.5 Teletext decoder with support for all Teletext character sets, graphics, 4096 colors, with built-in page cache including search functions
- Closed Caption decoder which supports roll-up, pop-up and paint-on style caption, color, expanded character set, text attributes and free text placement
- Renders Teletext and Caption pages, can export to HTML, PNG and other formats
- Can determine network names
- Can find Teletext subtitle and program pages
- Functions to extract data transmissions in Teletext streams (currently Page Format Clear and Independent Data Line Format A)