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#include <stdio.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <unistd.h>
#include <linux/dvb/dmx.h>
#include "crc32.h"
#include <lib/base/eerror.h>
#include <lib/dvb/idvb.h>
#include <lib/dvb/demux.h>
#include <lib/dvb/esection.h>
#include <lib/dvb/decoder.h>
eDVBDemux::eDVBDemux(int adapter, int demux): adapter(adapter), demux(demux), ref(0)
{
}
eDVBDemux::~eDVBDemux()
{
}
DEFINE_REF(eDVBDemux)
RESULT eDVBDemux::createSectionReader(eMainloop *context, ePtr<iDVBSectionReader> &reader)
{
RESULT res;
reader = new eDVBSectionReader(this, context, res);
if (res)
reader = 0;
return res;
}
RESULT eDVBDemux::getMPEGDecoder(ePtr<iTSMPEGDecoder> &decoder)
{
decoder = new eTSMPEGDecoder(this, 0);
return 0;
}
void eDVBSectionReader::data(int)
{
__u8 data[4096]; // max. section size
int r;
r = ::read(fd, data, 4096);
if(r < 0)
{
eWarning("ERROR reading section - %m\n");
return;
}
if (checkcrc)
{
// this check should never happen unless the driver is crappy!
unsigned int c;
if ((c = crc32((unsigned)-1, data, r)))
eFatal("crc32 failed! is %x\n", c);
}
read(data);
}
eDVBSectionReader::eDVBSectionReader(eDVBDemux *demux, eMainloop *context, RESULT &res): ref(0), demux(demux)
{
char filename[128];
sprintf(filename, "/dev/dvb/adapter%d/demux%d", demux->adapter, demux->demux);
fd = ::open(filename, O_RDWR);
if (fd >= 0)
{
notifier=new eSocketNotifier(context, fd, eSocketNotifier::Read);
CONNECT(notifier->activated, eDVBSectionReader::data);
res = 0;
} else
{
perror(filename);
res = errno;
}
}
DEFINE_REF(eDVBSectionReader)
eDVBSectionReader::~eDVBSectionReader()
{
if (notifier)
delete notifier;
if (fd >= 0)
::close(fd);
}
RESULT eDVBSectionReader::start(const eDVBSectionFilterMask &mask)
{
RESULT res;
if (fd < 0)
return -ENODEV;
dmx_sct_filter_params sct;
sct.pid = mask.pid;
sct.timeout = 0;
sct.flags = DMX_IMMEDIATE_START;
if (mask.flags & eDVBSectionFilterMask::rfCRC)
{
sct.flags |= DMX_CHECK_CRC;
checkcrc = 1;
} else
checkcrc = 0;
memcpy(sct.filter.filter, mask.data, DMX_FILTER_SIZE);
memcpy(sct.filter.mask, mask.mask, DMX_FILTER_SIZE);
memcpy(sct.filter.mode, mask.mode, DMX_FILTER_SIZE);
res = ::ioctl(fd, DMX_SET_FILTER, &sct);
if (!res)
active = 1;
return res;
}
RESULT eDVBSectionReader::stop()
{
if (!active)
return -1;
::ioctl(fd, DMX_STOP);
return 0;
}
RESULT eDVBSectionReader::connectRead(const Slot1<void,const __u8*> &r, ePtr<eConnection> &conn)
{
conn = new eConnection(read.connect(r));
return 0;
}
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