[linux-dvb] dmx_stop blocks unexpectedly

Edwin Mulder Tue, 27 Apr 2004 07:23:45 -0700

Hi,

I have a section filter configured like this:

thread_A:
   open ("/dev/dvb/adapter0/demux0", O_RDWR)) < 0

   filter[0] = 0x02; // TID for PMT
   mask[0] = 0xff;
   filter[3] = static_cast<U8>(mPmtSectionVersion << 1);
   mask[3] = 0x3e;
   mode[3] = 0x3e;
   flags |= (LDMX_CHECK_CRC | LDMX_ONESHOT)

ioctl(mFd, DMX_SET_FILTER, &parm) ioctl(mFd, DMX_START) read(mFd, pBuffer, count) --> blocks because there is no change in version of section; so far so good

If client wants to stop the filter, it executes
thread_B:
   ioctl(mFd, DMX_STOP)

Now I observe that thread_B, DMX_STOP blocks. Is this behaviour okay? I can't find anything about this in the documentation. I expected a non-blocking DMX_STOP and thread_A returning from read(). Replacing the ioct(DMX_STOP) by close(FileDescriptorSectionFilter) does not work either; thread_A is still blocking.

How should the the API work???

I am using dvb 1.0.1 with saa7146

Edwin

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[linux-dvb] dmx_stop blocks unexpectedly

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