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* vd_ffmpeg: set thread count to number of cores on machine by defaultUoti Urpala2010-12-201-0/+66
Make "-lavdopts threads=0" mean an autodetected number of threads, and make that the default value of the option. Also increase the upper limit of the option from 8 to 16. Add new file osdep/numcores.c which tries to determine the number of cores available on the machine. numcores.c is based (heavily modified) on public domain numcpus.c by Philip Willoughby <pgw99@doc.ic.ac.uk>, downloaded from http://csgsoft.doc.ic.ac.uk/numcpus/