GDCL (Geraint Davies Consulting Ltd) is a small consulting firm based in North Wales specializing in DirectShow software and WDM device driver development. GDCL's technology pages contain a substantial body of freely-reusable tools. The articles page contains papers and source code discussing advanced programming topics. It currently includes source code to a multiple-graph toolkit and a working mpeg-1 parser filter.		About GDCL About Geraint Davies.
DirectShow and WDM GDCL concentrate on development of DirectShow filters and WDM Streaming device drivers for digital video and audio processing, and consulting on a range of system software areas. Geraint Davies was the original designer of the DirectShow technology. For more information, advice and sample code, see the GDCL Technology pages.		Mpeg-4 File format filters available for download GMFBridge Multiple Graph toolkit and article Technology Overview An overview of the DirectShow filter architecture A technical Q & A for developers List of downloads
News Updated GMFBridge 1.0.0.15 fixes some audio type change bugs. Mpeg-4 multiplexor and demultiplexor filters available for download in source form here. (Latest release 1.0.0.2 has minor bug fixes) WMV/WMA Parser filter in source code available for download here. Version 0.9.0.3 has better fast forward (smooth from 0.1 up to 10x depending on performance) and has a few minor bug fixes. Subscribe to Code Updates mailing list to be informed whenever there is an update to any of the tools or samples on this web site. Details here. Mailing list is used only for notification of code updates.

For more information, contact GDCL on +44 1407 840220 or mail info@gdcl.co.uk