rtl: add named gain stage "IF"

This commit is contained in:
Dimitri Stolnikov 2013-02-16 15:01:29 +01:00
parent d4de9d18c1
commit 864712bad0
2 changed files with 37 additions and 3 deletions

View File

@ -87,6 +87,7 @@ rtl_source_c::rtl_source_c (const std::string &args)
_running(true),
_no_tuner(false),
_auto_gain(false),
_if_gain(0),
_skipped(0)
{
int ret;
@ -499,11 +500,17 @@ double rtl_source_c::get_freq_corr( size_t chan )
std::vector<std::string> rtl_source_c::get_gain_names( size_t chan )
{
std::vector< std::string > gains;
std::vector< std::string > names;
gains += "LNA";
names += "LNA";
return gains;
if ( _dev ) {
if ( rtlsdr_get_tuner_type(_dev) == RTLSDR_TUNER_E4000 ) {
names += "IF";
}
}
return names;
}
osmosdr::gain_range_t rtl_source_c::get_gain_range( size_t chan )
@ -526,6 +533,16 @@ osmosdr::gain_range_t rtl_source_c::get_gain_range( size_t chan )
osmosdr::gain_range_t rtl_source_c::get_gain_range( const std::string & name, size_t chan )
{
if ( "IF" == name ) {
if ( _dev ) {
if ( rtlsdr_get_tuner_type(_dev) == RTLSDR_TUNER_E4000 ) {
return osmosdr::gain_range_t(3, 56, 1);
} else {
return osmosdr::gain_range_t();
}
}
}
return get_gain_range( chan );
}
@ -560,6 +577,10 @@ double rtl_source_c::set_gain( double gain, size_t chan )
double rtl_source_c::set_gain( double gain, const std::string & name, size_t chan)
{
if ( "IF" == name ) {
return set_if_gain( gain, chan );
}
return set_gain( gain, chan );
}
@ -573,11 +594,22 @@ double rtl_source_c::get_gain( size_t chan )
double rtl_source_c::get_gain( const std::string & name, size_t chan )
{
if ( "IF" == name ) {
return _if_gain;
}
return get_gain( chan );
}
double rtl_source_c::set_if_gain(double gain, size_t chan)
{
if ( _dev ) {
if ( rtlsdr_get_tuner_type(_dev) != RTLSDR_TUNER_E4000 ) {
_if_gain = 0;
return _if_gain;
}
}
std::vector< osmosdr::gain_range_t > if_gains;
if_gains += osmosdr::gain_range_t(-3, 6, 9);
@ -630,6 +662,7 @@ double rtl_source_c::set_if_gain(double gain, size_t chan)
}
}
_if_gain = gain;
return gain;
}

View File

@ -136,6 +136,7 @@ private:
bool _no_tuner;
bool _auto_gain;
double _if_gain;
unsigned int _skipped;
};