static int ScanReadCallback( scan_t *p_scan, void *p_privdata,
unsigned i_probe_timeout, size_t i_packets_max,
uint8_t *p_packet, size_t *pi_count )
{
access_t *p_access = (access_t *) p_privdata;
access_sys_t *p_sys = p_access->p_sys;
*pi_count = 0;
/* Initialize file descriptor sets */
struct pollfd ufds[2];
ufds[0].fd = p_sys->dvb.i_handle;
ufds[0].events = POLLIN;
ufds[1].fd = p_sys->dvb.i_frontend_handle;
ufds[1].events = POLLPRI;
frontend_status_t status;
FrontendGetStatus( &p_sys->dvb, &status );
bool b_has_lock = status.b_has_lock;
mtime_t i_scan_start = mdate();
for( ; *pi_count == 0; )
{
/* Find if some data is available */
int i_ret;
mtime_t i_timeout = b_has_lock ? i_probe_timeout:
DVB_SCAN_MAX_LOCK_TIME;
do
{
mtime_t i_poll_timeout = i_scan_start - mdate() + i_timeout;
i_ret = 0;
if( vlc_killed() || scan_IsCancelled( p_scan ) )
break;
if( i_poll_timeout >= 0 )
i_ret = vlc_poll_i11e( ufds, 2, i_poll_timeout / 1000 );
}
while( i_ret < 0 && errno == EINTR );
if( i_ret < 0 )
{
return VLC_EGENERIC;
}
else if( i_ret == 0 )
{
return VLC_ENOITEM;
}
if( ufds[1].revents )
{
FrontendPoll( VLC_OBJECT(p_access), &p_sys->dvb );
FrontendGetStatus( &p_sys->dvb, &status );
if( status.b_has_lock && !b_has_lock )
{
i_scan_start = mdate();
b_has_lock = true;
}
}
if ( ufds[0].revents )
{
ssize_t i_read = read( p_sys->dvb.i_handle, p_packet, TS_PACKET_SIZE * i_packets_max );
if( i_read < 0 )
{
msg_Warn( p_access, "read failed: %s", vlc_strerror_c(errno) );
break;
}
else
{
*pi_count = i_read / TS_PACKET_SIZE;
}
}
}
return VLC_SUCCESS;
}
/*****************************************************************************
* dvb_Read
*****************************************************************************/
block_t *dvb_Read( mtime_t i_poll_timeout )
{
struct pollfd ufds[4];
int i_ret, i_nb_fd = 2;
block_t *p_blocks = NULL;
memset( ufds, 0, sizeof(ufds) );
ufds[0].fd = i_dvr;
ufds[0].events = POLLIN;
ufds[1].fd = i_frontend;
ufds[1].events = POLLERR | POLLPRI;
if ( i_comm_fd != -1 )
{
ufds[i_nb_fd].fd = i_comm_fd;
ufds[i_nb_fd].events = POLLIN;
i_nb_fd++;
}
if ( i_ca_handle && i_ca_type == CA_CI_LINK )
{
ufds[i_nb_fd].fd = i_ca_handle;
ufds[i_nb_fd].events = POLLIN;
i_nb_fd++;
}
i_ret = poll( ufds, i_nb_fd, (i_poll_timeout + 999) / 1000 );
i_wallclock = mdate();
if ( i_ret < 0 )
{
if( errno != EINTR )
msg_Err( NULL, "poll error: %s", strerror(errno) );
return NULL;
}
if ( ufds[1].revents )
FrontendPoll();
if ( ufds[0].revents )
{
p_blocks = DVRRead();
i_wallclock = mdate();
}
if ( p_blocks != NULL )
i_last_packet = i_wallclock;
else if ( !i_frontend_timeout
&& i_wallclock > i_last_packet + DVR_READ_TIMEOUT )
{
msg_Warn( NULL, "no DVR output, resetting" );
FrontendSet(false);
en50221_Reset();
}
if ( i_ca_handle && i_ca_type == CA_CI_LINK )
{
if ( ufds[i_nb_fd - 1].revents )
{
en50221_Read();
i_ca_next_event = i_wallclock + CA_POLL_PERIOD;
}
else if ( i_wallclock > i_ca_next_event )
{
en50221_Poll();
i_ca_next_event = i_wallclock + CA_POLL_PERIOD;
}
}
if ( i_frontend_timeout && i_wallclock > i_frontend_timeout )
{
if ( i_quit_timeout_duration )
{
msg_Err( NULL, "no lock" );
switch (i_print_type) {
case PRINT_XML:
printf("</TS>\n");
break;
default:
break;
}
exit(EXIT_STATUS_FRONTEND_TIMEOUT);
}
msg_Warn( NULL, "no lock, tuning again" );
FrontendSet(false);
}
if ( i_comm_fd != -1 && ufds[2].revents )
comm_Read();
return p_blocks;
}
