int scan_Next( scan_t *p_scan, scan_configuration_t *p_cfg )
{
double f_position;
int i_ret;
if( scan_IsCancelled( p_scan ) )
return VLC_EGENERIC;
memset( p_cfg, 0, sizeof(*p_cfg) );
switch( p_scan->parameter.type )
{
case SCAN_DVB_T:
i_ret = ScanDvbTNext( p_scan, p_cfg, &f_position );
break;
case SCAN_DVB_C:
i_ret = ScanDvbCNext( p_scan, p_cfg, &f_position );
break;
default:
i_ret = VLC_EGENERIC;
break;
}
if( i_ret )
return i_ret;
char *psz_text;
int i_service = 0;
for( int i = 0; i < p_scan->i_service; i++ )
{
if( p_scan->pp_service[i]->type != SERVICE_UNKNOWN )
i_service++;
}
if( asprintf( &psz_text, _("%.1f MHz (%d services)"),
(double)p_cfg->i_frequency / 1000000, i_service ) >= 0 )
{
const mtime_t i_eta = f_position > 0.005 ? (mdate() - p_scan->i_time_start) * ( 1.0 / f_position - 1.0 ) : -1;
char psz_eta[MSTRTIME_MAX_SIZE];
if( i_eta >= 0 )
msg_Info( p_scan->p_obj, "Scan ETA %s | %f", secstotimestr( psz_eta, i_eta/1000000 ), f_position * 100 );
if( p_scan->p_dialog == NULL )
p_scan->p_dialog = dialog_ProgressCreate( p_scan->p_obj, _("Scanning DVB"), psz_text, _("Cancel") );
if( p_scan->p_dialog != NULL )
dialog_ProgressSet( p_scan->p_dialog, psz_text, f_position );
free( psz_text );
}
p_scan->i_index++;
return VLC_SUCCESS;
}
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;
}
