Hi Nicolas, On 11/23/2016 10:24 PM, Nicolas Dufresne wrote: > Le lundi 21 novembre 2016 à 18:09 +0200, Stanimir Varbanov a écrit : >>>> Meanwhile I have found bigger obstacle - I cannot run multiple >> instances >>>> simultaneously. By m2m design it can execute only one job (m2m >> context) >>>> at a time per m2m device. Can you confirm that my observation is >> correct? >>> >>> The m2m framework assumes a single HW instance, yes. Do you have >> multiple >>> HW decoders? I might not understand what you mean... >>> >> >> I mean that I can start and execute up to 16 decoder sessions >> simultaneously. Its a firmware responsibility how those sessions are >> scheduled and how the hardware is shared between them. Of course >> depending on the resolution the firmware can refuse to start the >> session >> because the hardware will be overloaded and will not be able to >> satisfy >> the bitrate requirements. > > This is similar to S5P-MFC driver, which you may have notice not use > m2m framework. Thanks for the note. I have started to look into m2m because Hans asked me to reuse the ioctl helpers that it provides. I have no problem with usage of the m2m API if they help me to reduce code size and doesn't impact performance. -- regards, Stan -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
