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RFC: MPEG encoding and decoding V4L2 API additions

Mauro Carvalho Chehab writes:
 > > Currently, the AV7110 uses some parts of V4L2 for the analog stuff.
 > > These were based on the old Siemens cards, later on they were
 > > manufactured by a plethora of vendors (Technotrend, Hauppauge, Galaxis
 > > and many others ) making it  very popular. These cards are popularly
 > > knowns as the AV7110 based Full Fledged (FF) cards.
 > 
 > If the mpeg implementation on DVB API is generic enough to work with 
 > non-av7110 hardware, we should use those ioctls for ivtv. Otherwise, we 
 > should work in a way that won't result on userspace breakage when adding 
 > newer stuff to the ioctl. In the latter case, as on DVB, there are no 
 > reserved space on current structs for API additions, such change will 
 > likely result on defining a newer ioctl number with the old struct fields 
 > (or a more generic approach) plus the new required ones.
 > 
 > > I think some newer devices also will be based on this API, the
 > > Decypher [1] H.264 decoders from Micronas. Still work is going on with
 > > that device, AFAIK.
 > 
 > We should analyse the requirements of those devices and if the API 
 > provides enough support. Is there anybody already working on such 
 > hardware?

Yes, and there will be open drivers.
Hans Verkuil alreasdy 

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