Martin Wache wrote: > Luca Olivetti schrieb: > >>Martin Wache wrote: >> >> >>>I thought about letting the softdevice sleep even when the buffers are >>>not full, but I think the correct solution would be that vdr sleep in >>>case it doesn't have some frames to send. Or did I get the Poll() >>>function wrong? Should Poll() sleep in any case? >> >> >>from device.h >> >> virtual bool Poll(cPoller &Poller, int TimeoutMs = 0); >> ///< Returns true if the device itself or any of the file handles in >> ///< Poller is ready for further action. >> ///< If TimeoutMs is not zero, the device will wait up to the >>given number >> ///< of milleseconds before returning in case there is no immediate >> ///< need for data. >> > > > I know this header file, I read it many times, but it doesn't answer my > question. If you have a closer look at the methods of cDvbDevice and > cPoller, you will see that the method Poll() just calls the linux system > call poll() with the event POLLOUT. If you now have a look at the man > page of poll which states: > #define POLLOUT 0x0004 /* Writing now will not block */ > wou will see that this is _exactly_ the way the softdevices Poll() > method is currently implemented. It will only sleep if a write to the > softdevice would block. Oh, I see, I was too fast and I misinterpreted your request: I though you had the same problem I had with the dxr3 plugin (i.e. it didn't wait when it *couldn't* accept data). Maybe a ff card doesn't have this problem because it doesn't have big buffers, but I also wonder how is it possible that vdr hasn't enough data to give to the device: no matter how big the buffer, once it is filled it should stay more or less full, unless you're at the end of the file. Bye -- - Yo tambi?n quiero una Europa libre de Patentes de Software - - I want a Software Patents Free Europe too! And you? - --------------------------------------------------------------- EuropeSwPatentFree - http://EuropeSwPatentFree.hispalinux.es -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 256 bytes Desc: OpenPGP digital signature Url : http://www.linuxtv.org/pipermail/vdr/attachments/20050702/57a67807/signature.pgp
