Worker process added

photobooth/Photobooth.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from time import time, sleep, localtime, strftime
+# from time import time, localtime, strftime
 
 from PIL import Image, ImageOps
 
@@ -10,6 +10,8 @@ from .PictureDimensions import PictureDimensions
 
 from . import gui
 
+from.Worker import PictureSaver
+
 
 class TeardownException(Exception):
 
@@ -25,6 +27,8 @@ class Photobooth:
         self._conn = conn
         self._queue = queue
 
+        self._worker_list = [PictureSaver(config)]
+
         self.initCamera(config, camera())
         self.initGpio(config)
 
@@ -36,9 +40,9 @@ class Photobooth:
         self._cap = camera
         self._pic_dims = PictureDimensions(config, self._cap.getPicture().size)
 
-        picture_basename = strftime(config.get('Picture', 'basename'), localtime())        
-        self._pic_list = PictureList(picture_basename)
-        self._get_next_filename = self._pic_list.getNext
+        # picture_basename = strftime(config.get('Picture', 'basename'), localtime())        
+        # self._pic_list = PictureList(picture_basename)
+        # self._get_next_filename = self._pic_list.getNext
 
         if ( config.getBool('Photobooth', 'show_preview') 
             and self._cap.hasPreview ):
@@ -103,10 +107,10 @@ class Photobooth:
             raise TeardownException()
 
 
-    @property
-    def getNextFilename(self):
+    # @property
+    # def getNextFilename(self):
 
-        return self._get_next_filename
+    #     return self._get_next_filename
 
 
     @property
@@ -202,6 +206,12 @@ class Photobooth:
         return output_image
 
 
+    def enqueueWorkerTasks(self, picture):
+
+        for task in self._worker_list:
+            self._queue.put(( task.do, (picture, ) ))
+
+
     def trigger(self):
 
         self._conn.send(gui.GreeterState())
@@ -214,8 +224,10 @@ class Photobooth:
         self._conn.send(gui.AssembleState())
 
         img = self.assemblePictures(pics)
-        img.save(self.getNextFilename(), 'JPEG')
+        # img.save(self.getNextFilename(), 'JPEG')
         self._conn.send(gui.PictureState(img))
+        
+        self.enqueueWorkerTasks(img)
 
         self.setCameraIdle()
 

photobooth/Worker.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+from time import localtime, strftime
+
+from .PictureList import PictureList
+
+
+class WorkerTask:
+
+    def __init__(self, **kwargs):
+
+        assert not kwargs
+
+
+    def do(self, picture):
+
+        raise NotImplementedError()
+
+
+
+class PictureSaver(WorkerTask):
+
+    def __init__(self, config):
+
+        super().__init__()
+
+        picture_basename = strftime(config.get('Picture', 'basename'), localtime())
+        self._pic_list = PictureList(picture_basename)
+        self._get_next_filename = self._pic_list.getNext
+
+
+    @property
+    def getNextFilename(self):
+
+        return self._get_next_filename
+
+
+    def do(self, picture):
+
+        print('saving picture')
+        picture.save(self.getNextFilename(), 'JPEG')
+
+
+
+class Worker:
+
+    def __init__(self, config, queue):
+
+        self._queue = queue
+
+
+    def run(self):
+
+        for func, args in iter(self._queue.get, ('teardown', None)):
+            func(*args)
+
+        return 0

photobooth/main.py

@@ -14,6 +14,7 @@ from . import camera, gui
 from .Config import Config
 from .Photobooth import Photobooth
 from .util import lookup_and_import
+from .Worker import Worker
 
 class CameraProcess(mp.Process):
 
@@ -76,8 +77,7 @@ class WorkerProcess(mp.Process):
 
     def run(self):
 
-        print('Started Worker')
-        print('Exit Worker')
+        sys.exit(Worker(self.cfg, self.queue).run())
 
 
 class GuiProcess(mp.Process):
@@ -118,8 +118,10 @@ def run(argv):
 
     gui_conn.close()
     camera_conn.close()
-
     gui_proc.join()
+    
+    worker_queue.put(('teardown', None))
+    worker_proc.join()
     camera_proc.join(5)
     return gui_proc.exitcode