rpicamera: allow to set gain without disconnecting readers

internal/core/path_manager.go

@@ -21,8 +21,9 @@ func pathConfCanBeUpdated(oldPathConf *conf.PathConf, newPathConf *conf.PathConf
 	copy.RPICameraExposure = newPathConf.RPICameraExposure
 	copy.RPICameraAWB = newPathConf.RPICameraAWB
 	copy.RPICameraDenoise = newPathConf.RPICameraDenoise
-	copy.RPICameraMetering = newPathConf.RPICameraMetering
 	copy.RPICameraShutter = newPathConf.RPICameraShutter
+	copy.RPICameraMetering = newPathConf.RPICameraMetering
+	copy.RPICameraGain = newPathConf.RPICameraGain
 	copy.RPICameraEV = newPathConf.RPICameraEV
 	copy.RPICameraFPS = newPathConf.RPICameraFPS
 

internal/rpicamera/exe/camera.cpp

@@ -296,6 +296,8 @@ static void fill_dynamic_controls(ControlList *ctrls, const parameters_t *params
     }
     ctrls->set(controls::draft::NoiseReductionMode, denoise_mode);
 
+    ctrls->set(controls::ExposureTime, params->shutter);
+
     int metering_mode;
     if (strcmp(params->metering, "spot") == 0) {
         metering_mode = controls::MeteringSpot;
@@ -308,7 +310,7 @@ static void fill_dynamic_controls(ControlList *ctrls, const parameters_t *params
     }
     ctrls->set(controls::AeMeteringMode, metering_mode);
 
-    ctrls->set(controls::ExposureTime, params->shutter);
+    ctrls->set(controls::AnalogueGain, params->gain);
 
     ctrls->set(controls::ExposureValue, params->ev);
 
@@ -323,10 +325,6 @@ bool camera_start(camera_t *cam) {
 
     fill_dynamic_controls(camp->ctrls.get(), camp->params);
 
-    if (camp->params->gain > 0) {
-        camp->ctrls->set(controls::AnalogueGain, camp->params->gain);
-    }
-
     if (camp->camera->controls().count(&controls::AfMode) > 0) {
         int af_mode;
         if (strcmp(camp->params->af_mode, "manual") == 0) {