Wolfgang Rohdewald wrote: > On Donnerstag 16 Juni 2005 06:48, Oliver Endriss wrote: > > Looks ok if OSDSetBlock is _never_ used by more than one thread at the > > same time. Otherwise, some race conditions might occur. > > > > Anyway, as the OSD interface has state variables like av7110->osdwin > > it is not thread-safe 'by design'. > > would something like this help: > > have the first LoadBitmap return a uint identifier which > must then be used by following LoadBitmap/BlitBitmap calls > and the terminating ReleaseBitmap? Calls with a wrong > identifier would be rejected with something like -EAGAIN See my other post. Imho there is no problem if the global variables 'osdwin' and 'osdbpp' are not modified. Restarting a bitmap transfer should work fine, at least with firmware 261e. Oliver -- -------------------------------------------------------- VDR Remote Plugin available at http://www.escape-edv.de/endriss/vdr/ --------------------------------------------------------
