From a0230e344d345ed53ef913247428e32b7e64c0c4 Mon Sep 17 00:00:00 2001
From: Hendrik Langer <hendrik+dev@xd0.de>
Date: Thu, 6 Aug 2020 21:43:02 +0200
Subject: [PATCH] re-introduce video-feed

---
 raspberry/roberto/__init__.py              | 15 ++++++++--
 raspberry/roberto/camera/base_camera.py    |  2 +-
 raspberry/roberto/views/frontend/routes.py | 34 +++++++++++-----------
 3 files changed, 30 insertions(+), 21 deletions(-)

diff --git a/raspberry/roberto/__init__.py b/raspberry/roberto/__init__.py
index e8186c9..7fa0228 100644
--- a/raspberry/roberto/__init__.py
+++ b/raspberry/roberto/__init__.py
@@ -7,8 +7,14 @@ from flask_socketio import SocketIO
 #######################
 #### Configuration ####
 #https://www.patricksoftwareblog.com/structuring-a-flask-project/
-
 #######################
+
+platform = None
+try:
+  import RPi.GPIO as gpio
+  platform = 'raspberry'
+except (ImportError, RuntimeError):
+  platform = 'generic'
  
 # Create the instances of the Flask extensions (flask-sqlalchemy, flask-login, etc.) in
 # the global scope, but without any arguments passed in.  These instances are not attached
@@ -16,8 +22,11 @@ from flask_socketio import SocketIO
 login = LoginManager()
 login.login_view = "users.login"
 socketio = SocketIO()
-#from roberto.camera.camera_opencv import Camera
-#camera = Camera()
+if platform == 'raspberry':
+    from roberto.camera.camera_pi import Camera
+else:
+    from roberto.camera.camera_opencv import Camera
+camera = Camera()
 from roberto.camera.camera_gstreamer_webrtc import WebRTCCamera
 webrtccamera = WebRTCCamera()
 from roberto.Serial import Serial
diff --git a/raspberry/roberto/camera/base_camera.py b/raspberry/roberto/camera/base_camera.py
index 38c33de..c340508 100644
--- a/raspberry/roberto/camera/base_camera.py
+++ b/raspberry/roberto/camera/base_camera.py
@@ -97,7 +97,7 @@ class BaseCamera(object):
 
             # if there hasn't been any clients asking for frames in
             # the last 10 seconds then stop the thread
-            if time.time() - BaseCamera.last_access > 10:
+            if time.time() - BaseCamera.last_access > 3:
                 frames_iterator.close()
                 print('Stopping camera thread due to inactivity.')
                 break
diff --git a/raspberry/roberto/views/frontend/routes.py b/raspberry/roberto/views/frontend/routes.py
index 08938b7..908efe1 100644
--- a/raspberry/roberto/views/frontend/routes.py
+++ b/raspberry/roberto/views/frontend/routes.py
@@ -11,23 +11,23 @@ from flask import Response
 def index():
     return render_template('index.html')
 
-#def gen(camera):
-#    """Video streaming generator function."""
-#    while True:
-#        frame = camera.get_frame()
-#        yield (b'--frame\r\n'
-#               b'Content-Type: image/jpeg\r\n\r\n' + frame + b'\r\n')
-#
-#
-#@frontend_blueprint.route('/video_feed')
-#def video_feed():
-#    """Video streaming route. Put this in the src attribute of an img tag."""
-#    from roberto import camera
-#    camera.__init__()
-#    response = Response(gen(camera),
-#                    mimetype='multipart/x-mixed-replace; boundary=frame')
-#    response.headers.add('X-Accel-Buffering', 'no')
-#    return response
+def gen(camera):
+    """Video streaming generator function."""
+    while True:
+        frame = camera.get_frame()
+        yield (b'--frame\r\n'
+               b'Content-Type: image/jpeg\r\n\r\n' + frame + b'\r\n')
+
+
+@frontend_blueprint.route('/video_feed')
+def video_feed():
+    """Video streaming route. Put this in the src attribute of an img tag."""
+    from roberto import camera
+    camera.__init__()
+    response = Response(gen(camera),
+                    mimetype='multipart/x-mixed-replace; boundary=frame')
+    response.headers.add('X-Accel-Buffering', 'no')
+    return response
 
 
 @frontend_blueprint.route('/gamepad.js')