Added API route to edit camera config

openflexure_microscope/api/utilities.py

@@ -9,9 +9,16 @@ class JsonPayload:
         """
         # Try to load as json
         self.json = request.get_json()  #: dict: Dictionary representation of request JSON
+
+        if self.json is None:
+            self.json = {}
+
         # Store raw response data
         self.data = request.get_data()  #: str: String representation of request data
 
+        if self.data is None:
+            self.data = ""
+
     def param(self, key, default=None, convert=None):
         """
         Check if a key exists in a JSON/dictionary payload, and returns it.

openflexure_microscope/api/v1/blueprints/camera/__init__.py

@@ -2,7 +2,7 @@ from openflexure_microscope.api.v1.views import MicroscopeView
 
 from flask import Blueprint
 
-from . import capture, record, preview
+from . import capture, record, preview, config
 
 
 def construct_blueprint(microscope_obj):
@@ -31,4 +31,9 @@ def construct_blueprint(microscope_obj):
         '/preview/<string:operation>', 
         view_func=preview.GPUPreviewAPI.as_view('gpu_preview', microscope=microscope_obj))
 
+    # Config routes
+    blueprint.add_url_rule(
+        '/config', 
+        view_func=config.ConfigAPI.as_view('camera_config', microscope=microscope_obj))
+
     return(blueprint)

openflexure_microscope/api/v1/blueprints/camera/config.py

@@ -0,0 +1,73 @@
+from openflexure_microscope.api.utilities import JsonPayload
+from openflexure_microscope.api.v1.views import MicroscopeView
+
+from flask import Response, Blueprint, jsonify, request, abort, url_for, redirect, send_file
+
+import logging
+
+
+class ConfigAPI(MicroscopeView):
+
+    def get(self):
+        """
+        Get camera configuration
+
+        .. :quickref: Camera config; Get camera configuration
+        """
+
+        return jsonify(self.microscope.camera.config)
+
+    def post(self):
+        """
+        Modify camera configuration
+
+        .. :quickref: Camera config; Set camera configuration
+
+        **Example request**:
+
+        .. sourcecode:: http
+
+          POST /camera/capture HTTP/1.1
+          Accept: application/json
+
+          {
+            "analog_gain": 1.0, 
+            "digital_gain": 1.0, 
+            "jpeg_quality": 75, 
+            "picamera_params": {
+                "framerate": 24.0, 
+                "saturation": 0, 
+                "shutter_speed": 5000
+            }
+          }
+
+        :>header Accept: application/json
+
+        :<json float analog_gain: Analog gain
+        :<json float digital_gain: Digital gain
+
+        :<json list image_resolution: Image resolution in format [x, y]
+        :<json list video_resolution: Video resolution in format [x, y]
+        :<json list numpy_resolution: Raw numpy array resolution in format [x, y]
+
+        :<json int jpeg_quality: JPEG quality (1-100)
+        :<json string shading_table_path: Full path on the Pi to the lens shading table npy file
+
+        :<json json picamera_param: -   **awb_gains** *(list)*: Auto-white-balance gains in format [r, g, b]
+                                        **awb_mode** *(string)*: PiCamera AWB mode
+                                        **exposure_mode** *(string)*: PiCamera exposure mode
+                                        **framerate** *(float)*: PiCamera framerate
+                                        **saturation** *(int)*: PiCamera saturation
+                                        **shutter_speed** *(string)*: PiCamera shutter speed
+
+        :<header Content-Type: application/json
+        :status 200: capture created
+
+        """
+        payload = JsonPayload(request)
+
+        print(payload.json)
+
+        self.microscope.camera.config = payload.json
+
+        return jsonify(self.microscope.camera.config)