AP_Camera: allow features override. Report OSD support.

libraries/AP_Camera/AP_RunCam.cpp

@@ -886,9 +886,15 @@ void AP_RunCam::parse_device_info(const Request& request)
 
     uint8_t featureLowBits = request._recv_buf[2];
     uint8_t featureHighBits = request._recv_buf[3];
-    _features = (featureHighBits << 8) | featureLowBits;
+    if (!has_feature(Feature::FEATURES_OVERRIDE)) {
+        _features = (featureHighBits << 8) | featureLowBits;
+    }
     _state = State::INITIALIZED;
-    gcs().send_text(MAV_SEVERITY_INFO, "RunCam device initialized, features 0x%04X\n", _features.get());
+    gcs().send_text(MAV_SEVERITY_INFO, "RunCam initialized, features 0x%04X, %d-key OSD\n", _features.get(),
+        has_feature(Feature::RCDEVICE_PROTOCOL_FEATURE_SIMULATE_5_KEY_OSD_CABLE) ? 5 :
+        (has_feature(Feature::RCDEVICE_PROTOCOL_FEATURE_CHANGE_MODE) &&
+        has_feature(Feature::RCDEVICE_PROTOCOL_FEATURE_SIMULATE_WIFI_BUTTON) &&
+        has_feature(Feature::RCDEVICE_PROTOCOL_FEATURE_SIMULATE_POWER_BUTTON)) ? 2 : 0);
     debug("RunCam: initialized state: video: %d, osd: %d, cam: %d\n", _video_recording, int(_osd_option), int(_cam_control_option));
 }
 

libraries/AP_Camera/AP_RunCam.h

@@ -105,7 +105,8 @@ private:
         RCDEVICE_PROTOCOL_FEATURE_DEVICE_SETTINGS_ACCESS = (1 << 4),
         RCDEVICE_PROTOCOL_FEATURE_DISPLAY_PORT = (1 << 5),
         RCDEVICE_PROTOCOL_FEATURE_START_RECORDING = (1 << 6),
-        RCDEVICE_PROTOCOL_FEATURE_STOP_RECORDING = (1 << 7)
+        RCDEVICE_PROTOCOL_FEATURE_STOP_RECORDING = (1 << 7),
+        FEATURES_OVERRIDE = (1 << 14)
     };
 
     // camera control commands
@@ -190,10 +191,6 @@ private:
 
     // supported features, usually probed from the device
     AP_Int16 _features;
-    // number of initialization attempts
-    AP_Int8 _init_attempts;
-    // delay between initialization attempts
-    AP_Int32 _init_attempt_interval_ms;
     // delay time to make sure the camera is fully booted
     AP_Int32 _boot_delay_ms;
     // delay time to make sure a button press has been activated