add api for manual gain mode control

2 files changed, 12 insertions, 0 deletions

diff --git a/lib/file/file_source_c.cc b/lib/file/file_source_c.cc
index a706442..87de181 100644
--- a/lib/file/file_source_c.cc
+++ b/lib/file/file_source_c.cc
@@ -172,6 +172,16 @@ osmosdr::gain_range_t file_source_c::get_gain_range( const std::string & name, s
   return get_gain_range( chan );
 }
 
+bool file_source_c::set_gain_mode( bool mode, size_t chan )
+{
+  return get_gain_mode(chan);
+}
+
+bool file_source_c::get_gain_mode( size_t chan )
+{
+  return true;
+}
+
 double file_source_c::set_gain( double gain, size_t chan )
 {
   return get_gain(chan);
diff --git a/lib/file/file_source_c.h b/lib/file/file_source_c.h
index 83ad24e..78cc985 100644
--- a/lib/file/file_source_c.h
+++ b/lib/file/file_source_c.h
@@ -61,6 +61,8 @@ public:
   std::vector<std::string> get_gain_names( size_t chan = 0 );
   osmosdr::gain_range_t get_gain_range( size_t chan = 0 );
   osmosdr::gain_range_t get_gain_range( const std::string & name, size_t chan = 0 );
+  bool set_gain_mode( bool mode, size_t chan = 0 );
+  bool get_gain_mode( size_t chan = 0 );
   double set_gain( double gain, size_t chan = 0 );
   double set_gain( double gain, const std::string & name, size_t chan = 0 );
   double get_gain( size_t chan = 0 );